Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claims 1 – 11 are rejected under 35 U.S.C. 103 as being unpatentable over Tyagi (US 20220021221) in view of Keene (US 20230246458).
Regarding claim 1, Tyagi teaches a method for balancing a battery state (paragraph [0001] discloses a method for balancing a battery state or power within a battery),
comprising: obtaining voltage information and current information of a plurality of battery packs (paragraph [0047] teaches wherein voltage and current of the battery packs is obtained, interpreted as measuring the current and voltage);
determining whether the obtained voltage information of the plurality of battery packs is open circuit voltage (paragraph [0047] teaches wherein an open circuit voltage of the battery packs is measured);
calculating a plurality of balanced voltages according to a plurality of working voltages of the plurality of battery packs and a plurality of aging voltage compensation parameters of the plurality of battery packs (paragraph [0047] discloses wherein working voltage, interpreted as a state of charge of the battery pack and the aging voltage, interpreted as a state of health of the battery packs are determined. These values are calculated to determined which battery pack requires balancing);
determining whether the balanced voltages calculated are all located on a same curve fragment when the voltage information of the plurality of battery packs is the working voltages (paragraphs [0046] and [0047] teach determining a working voltage interpreted as voltage measured during charging and discharging. Balanced voltages are determined as the voltage is measured and an aging voltage compensation, a State of health (SOH) value is determined from the voltage. These values are used to determine if the voltage is balanced or a mismatch is determined. These values are correlated with values on a look up table, which may also be a curve);
calculating balanced capacities of the plurality of battery packs via aging capacity compensation parameters of the plurality of battery packs when determining that the voltage information of the plurality of battery packs is the open circuit voltages (paragraph [0047] teaches wherein the balanced capacities or state of charge is determined based on aging capacity compensation, interpreted as State of Health (SOH) after determining the value of an Open Circuit Voltage (OCV)),
calculating balanced capacity differences of the plurality of battery packs by using the balanced capacities of the plurality of battery packs (paragraph [0049] teaches wherein balancing capacity is interpreted as balancing the state of charge by charging and discharging is determined. The capacity or State of Charge (SOC) of a plurality of battery packs is determined, then a difference between capacities or SOC is calculated),
wherein capacities of the plurality of battery packs are adjusted by charging or discharging at least one of the battery packs according to the balanced capacity differences corresponding to the plurality of battery packs to balance battery capacities among the plurality of battery packs (paragraph [0044] teaches wherein the control unit 110 dynamically balances the power in the battery pack 108 during charging and discharging. The control unit 110 dynamically balances the power in the battery pack 108 by controlling a differential current and transferring current from a block associated with a higher capacity or state of charge (SOC) to a block associated with a lower capacity or SOC).
Tyagi suggests values on a curve, interpreted as a lookup table, which is known in the art to correlate to curve, but does not explicitly teach wherein a plurality of battery packs are all located on the same curve fragment when the voltage information of the plurality of battery packs is the working voltages or when determining that the balanced voltages of the plurality of battery packs are all located on the same curve fragment.
Keene teaches wherein determining whether balanced voltages calculated according to working voltages of the plurality of battery packs and aging voltage compensation parameters of the plurality of battery packs are all located on the same curve fragment or when the voltage information of the plurality of battery packs is the working voltages or when determining that the balanced voltages of the plurality of battery packs are all located on the same curve fragment (defined in paragraph [0043] wherein the balanced capacities, interpreted as a State of Charge (SOC) of a plurality of batteries and its relationship between voltages, Open Circuit Voltage (OCV) and aging voltage compensation or state of health (SOH) is modeled on a curve or a hysteresis. Paragraph [0044] teaches wherein the values are determined if they fit on a curve or a portion (fragment) of the curve).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
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Tyagi figure 2 shows a battery system which is dynamically balanced.
Regarding claim 2, Tyagi teaches the method of claim 1, further comprising: and calculating balanced capacities of the plurality of battery packs by using the available capacities ([0047], wherein available capacities, a capacity of the battery, remaining capacity and a nameplate capacity) and the aging capacity compensation parameters of the plurality of battery packs (paragraph [0049] teaches wherein balancing capacity is interpreted as balancing the state of charge by charging and discharging is determined. The capacity or State of Charge (SOC) of a plurality of battery packs is determined, then a difference between capacities or SOC is calculated).
Tyagi teaches obtaining available capacities corresponding to the open circuit voltages of the plurality of battery packs according to a State of Charge-Open Circuit Voltage (SoC-OCV) (defined in paragraph [0047], wherein available capacities, a capacity of the battery, remaining capacity and a nameplate capacity is determined according to a State of Charge-Open Circuit Voltage look up table), but does not explicit teach the values according to a curve when determining that the voltage information of the plurality of battery packs is the open circuit voltages.
Keene teaches the values, State of Charge and an Open Circuit Voltage according to a curve when determining that the voltage information of the plurality of battery packs is the open circuit voltages (defined in paragraph [0043] wherein the balanced capacities, interpreted as a State of Charge (SOC) of a plurality of batteries and its relationship between voltages, Open Circuit Voltage (OCV) and aging voltage compensation or state of health (SOH) is modeled on a curve or a hysteresis. Paragraph [0044] teaches wherein the values are determined if they fit on a curve or a portion (fragment) of the curve).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Regarding claim 3, Tyagi teaches the method of claim 1, further comprising:
calculating the balanced voltages of the plurality of battery packs according to the working voltages, working currents of the current information, and the aging voltage compensation parameters of the plurality of battery packs when determining that the voltage information of the plurality of battery packs is the working voltages (paragraphs [0046] and [0047] teach determining a working voltage interpreted as voltage measured during charging and discharging. Balanced voltages are determined as the voltage is measured and an aging voltage compensation, a State of health (SOH) value is determined from the voltage. These values are determined as working as they are calculated and measured during charging and discharging);
determining whether the balanced voltages of the plurality of battery packs are on the same curve fragment in a State of Charge-Open Circuit Voltage (SoC-OCV) curve (paragraphs [0046] and [0047] teach determining a working voltage interpreted as voltage measured during charging and discharging. Balanced voltages are determined as the voltage is measured and an aging voltage compensation, a State of health (SOH) value is determined from the voltage. These values are used to determine if the voltage is balanced or a mismatch is determined. These values are correlated with values on a look up table, which may also be a curve);
obtaining available capacities corresponding to the balanced voltages of the plurality of battery packs according to the SoC-OCV curve when determining that the balanced voltages of the plurality of battery packs are all located on the same curve fragment (paragraph [0047] teaches wherein an available capacity, such as an initial SOC, is obtained by determining an SOC corresponding to the measured (balanced) voltage as it according to an Open-Circuit voltage look up table, which may be a curve); and
calculating the balanced capacities of the plurality of battery packs by using the available capacities and the aging capacity compensation parameters of the plurality of battery packs (paragraph [0047] teaches wherein the balanced capacities or state of charge is determined based on aging capacity compensation, interpreted as State of Health (SOH) after determining the value of an Open Circuit Voltage (OCV)).
Tyagi does not explicitly teach values according to a curve.
Keene teaches values according to a curve (defined in paragraph [0043] wherein the balanced capacities, interpreted as a State of Charge (SOC) of a plurality of batteries and its relationship between voltages, Open Circuit Voltage (OCV) and aging voltage compensation or state of health (SOH) is modeled on a curve or a hysteresis. Paragraph [0044] teaches wherein the values are determined if they fit on a curve or a portion (fragment) of the curve).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Regarding claim 4, Tyagi teaches the method of claim 1, further comprising: confirming whether there is previous voltage information and current information of the plurality of battery packs when the voltage information of the plurality of battery packs is the open circuit voltages (paragraph [0053] wherein the batteries are balanced based on learning from previous voltage and current information interpreted as historical stored values);
Tyagi suggests updating, since the batteries are dynamically balanced based on continuous voltage and current measurements, does not explicitly teach updating the aging voltage compensation parameters of the plurality of battery packs when confirming that there is the previous voltage information and current information of the plurality of battery packs; and updating the aging capacity compensation parameters of the plurality of battery packs after confirming that there is the previous voltage information of the plurality of battery packs.
Keene teaches updating the aging voltage compensation parameters of the plurality of battery packs when confirming that there is the previous voltage information and current information of the plurality of battery packs; and updating the aging capacity compensation parameters of the plurality of battery packs after confirming that there is the previous voltage information of the plurality of battery packs (paragraphs [0044] and [0049] teaches wherein an SOC and SOH model is based on previously stored, historical values. Paragraphs [0053]-[0054] teaches updating an aging voltage compensation parameter, interpreted as a State of Health, SOH).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Regarding claim 5, Tyagi teaches the method of claim 4, but does not explicitly teach further comprising a sub-method of updating the aging voltage compensation parameters of the plurality of battery packs, comprising: calculating working voltage differences of the plurality of battery packs according to the open circuit voltages and working voltages of the previous voltage information of the plurality of battery packs (paragraphs [0046] and [0047] teach determining a working voltage interpreted as voltage measured during charging and discharging according to Open Circuit Voltages and previous voltage values stored in a lookup table. Tyagi suggests updating as the batteries are dynamically balanced according to voltage and current measurements).
Tyagi suggests updating as the batteries are dynamically balanced, but does not explicitly teach updating new aging voltage compensation parameters of the plurality of battery packs according to working currents of the previous current information and the working voltage differences of the previous voltage information of the plurality of battery packs.
Keene teaches updating new aging voltage compensation parameters of the plurality of battery packs according to working currents of the previous current information and the working voltage differences of the previous voltage information of the plurality of battery packs (defined in paragraph [0053] wherein new aging voltage compensation parameters, interpreted as SOH, is updated according to historical currents and voltages stored. Paragraphs [0044] and [0049] teaches wherein machine learning models are trained on historical values to determine and update an SOH).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Regarding claim 6, Tyagi teaches the method of claim 4, further comprising a sub-method of updating the aging capacity compensation parameters of the plurality of battery packs, comprising:
obtaining available capacities and working capacities of the plurality of battery packs via a State of Charge-Open Circuit Voltage (SoC-OCV) curve according to the open circuit voltages and working voltages of the previous voltage information of the plurality of battery packs (paragraph [0047], teaches wherein available capacities, a capacity of the battery, remaining capacity and a nameplate capacity are obtained according to a State of Charge-Open Circuit Voltage curve, which may be a look up table);
calculating working capacity differences of the plurality of battery packs by using the available capacities and the working capacities of the plurality of battery packs (paragraph [0049] teaches wherein working capacity differences is interpreted as differences in the state of charge while charging and discharging. The capacity or State of Charge (SOC) of a plurality of battery packs is determined, then a difference between capacities or SOC is calculated).
Tyagi suggests updating by dynamically balancing the capacity as the batteries are charged and discharged, but does not explicitly teach updating new aging capacity compensation parameters of the plurality of battery packs by using the working capacity differences of the plurality of battery packs (paragraphs [0044] and [0049] teaches wherein an SOC and SOH model is based on previously stored, historical values. Paragraphs [0053]-[0054] teaches updating an aging voltage compensation parameter, interpreted as a State of Health, SOH).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Regarding claim 7, Tyagi teaches the method of claim 5, wherein the previous voltage information and current information of the plurality of battery packs are voltage information and current information of a last working current that is not 0 ampere before the open circuit voltages of voltage information of the plurality of battery packs are obtained (paragraph [0097] teaches wherein voltage and current information such as the change in voltage when a current is applied (not 0 ampere) and when current is not applied (0 ampere value) this value is stored before the open circuit voltage is determined).
Regarding claim 8, Tyagi teaches the method of claim 6, wherein the previous voltage information and current information of the plurality of battery packs are voltage information and current information of a last working current that is not 0 ampere before the open circuit voltages of voltage information of the plurality of battery packs are obtained (paragraph [0097] teaches wherein voltage and current information such as the change in voltage when a current is applied (not 0 ampere) and when current is not applied (0 ampere value) this value is stored before the open circuit voltage is determined).
Regarding claim 9, Tyagi teaches the device for balancing a battery state (shown in figure 1 item 100),
comprising: a plurality of battery packs (figure 1 item 108 and figure 2 and [0043] teaches a plurality of battery packs which includes one or more modules);
a voltage measuring device and a current measuring device electrically connected to the plurality of battery packs to obtain voltage information and/or current information of the plurality of battery packs (paragraph [0046] teaches wherein the SOC unit in figure 1 item 106 measures the voltage and current);
a register communicatively connected to the voltage measuring device and the current measuring device to record the voltage information and/or the current information of the plurality of battery packs (defined in paragraph [0047] as a nonvolatile memory element that stores a lookup table); and
a processor communicatively connected to the register to execute the method of claim 1 (paragraph [0047] teaches a memory connected with a microprocessor).
Regarding claim 10, Tyagi teaches the device of claim 9, wherein the plurality of battery packs are connected in series with each other, and each of the plurality of battery packs includes at least one cell (figure 2 and paragraph [0044] shows wherein the batteries may connected in series).
Regarding claim 11, Tyagi teaches the device of claim 9, but does not explicitly teach wherein the register stores a State of Charge-Open Circuit Voltage (SoC-OCV) curve corresponding to a cell type of the plurality of battery packs.
Keene teaches wherein the register stores a State of Charge-Open Circuit Voltage (SoC-OCV) curve corresponding to a cell type of the plurality of battery packs (defined in paragraphs [0040]- [0041] wherein the State of Charge-Open Circuit Voltage curve corresponds to different types of batteries such as a conventional battery and an Si/Li battery).
It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Tyagi reference with the charging system of the Keene reference so that the useful life of a battery is maximized.
The suggestion/motivation for combination can be found in the Keene reference in paragraph [0041] wherein maximizing useful battery life is taught.
Response to Arguments
Applicant’s arguments, see Arguments/Remarks, filed 04/14/2026, with respect to the rejections under 35 USC 101 and 35 USC 112 have been fully considered and are persuasive. The rejections of under 35 USC 101 and 35 USC 112 has been withdrawn.
Applicant's arguments filed 04/14/2026 with respect to the prior art rejections under 35 USC 103 have been fully considered but they are not persuasive. Regarding claim 1, the applicant argues that the Tyagi reference does not teach or suggest, “calculating a plurality of balanced voltages according to a plurality of working voltages of the plurality of battery packs and a plurality of aging voltage compensation parameters of the plurality of battery packs.” As disclosed above, the Tyagi reference discloses calculating a plurality of balanced voltages according to a plurality of working voltages of the plurality of battery packs and a plurality of aging voltage compensation parameters of the plurality of battery packs (paragraph [0047] discloses wherein working voltage, interpreted as a state of charge of the battery pack and the aging voltage, interpreted as a state of health of the battery packs are determined. These values are calculated to determined which battery pack requires balancing. The Tyagi reference monitors the state of charge, state of health and other parameters of the battery and balances the battery packs based on these measurements. The balancing is performed by charging or discharging an individual battery pack.
For these reasons, the argument is not persuasive.
Claims 2-11 are dependent upon claim 1 and support the limitations within claim 1, thus these limitations do not overcome the applied prior art.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure.
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THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a).
A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action.
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ALEXIS BOATENG PACHECO
Primary Examiner
Art Unit 2859
/ALEXIS B PACHECO/Primary Examiner, Art Unit 2859
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