CN202260525U - Large-capacity battery formation circuit - Google Patents
Large-capacity battery formation circuit Download PDFInfo
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- CN202260525U CN202260525U CN2011203549737U CN201120354973U CN202260525U CN 202260525 U CN202260525 U CN 202260525U CN 2011203549737 U CN2011203549737 U CN 2011203549737U CN 201120354973 U CN201120354973 U CN 201120354973U CN 202260525 U CN202260525 U CN 202260525U
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Abstract
The utility model relates to a large-capacity battery formation circuit comprising a power supply unit and formation modules; wherein the each formation module comprises a master control unit, a charging power supply and a battery charge/discharge unit; the battery charge/discharge unit is formed by a charging circuit and a discharging circuit which are connected in series; the battery formation circuit is formed by the plurality of formation modules which are connected in parallel, the each formation module is connected with a detecting end of a battery to be formed through the respective charging power supply; the charging circuit comprises a charging control triode and a charging shunting triode set, the discharging circuit comprises a discharging control triode and a discharging shunting triode set; and the charging shunting triode set and the discharging shunting triode set are respectively formed by four triodes which are connected in parallel. The large-capacity battery formation circuit of the utility model can output a large current greater than 3A, thus the problem that a formation test can not be performed for a large-capacity power battery with a capacity greater than 3A can be solved, and the large-capacity battery formation circuit of the utility model also can provide a current about 25A to 200A to realize a large-capacity accurate charge and discharge performance test.
Description
Technical field
The utility model relates to battery forming technology field, relates in particular to a kind of high capacity cell and changes into circuit.
Background technology
Electronic devices and components comprise various storage batterys in operate as normal often owing to making reason such as latent defect cause components and parts to lose efficacy having influence on the reliability of complete machine; Therefore; Electronic devices and components all will carry out ageing screening, detected electrons failure of elements rate before dispatching from the factory.It is the detection to battery secondary current charge and discharge process that battery changes into circuit; It is a kind of method that detects the battery failure rate; Conventional battery changes into circuit and can only provide the battery that capacity is less than or equal to 3AH and change into test; Can't change into test for capacity greater than the great-capacity power battery of 3AH, also can't estimate its performance and find latent defect.
Summary of the invention
The utility model technical problem to be solved is to change into the problems referred to above that circuit exists to existing battery, provides a kind of and has been applied to the high capacity cell that the capacity electrokinetic cell changes into test and changes into circuit.
For addressing the above problem, the technical scheme of the utility model is:
A kind of high capacity cell changes into circuit; Comprise power supply unit and by the module that changes into of power supply unit power supply; The said module that changes into comprises the battery charging and discharging unit that is used to control main control unit, the charge power supply that changes into the circuit charging and discharging state and is used to test battery charging and discharging to be changed; Said battery charging and discharging unit is connected in parallel on the charge power supply positive and negative polarities; The battery charging and discharging unit links to each other with battery detecting end to be changed with main control unit respectively; Said battery charging and discharging unit is in series by charging circuit and discharge circuit, and said battery changes into circuit and is formed in parallel by a plurality of modules that change into, each change into module respectively charge power supply and the battery detecting end to be changed through separately be connected to each other; Said charging circuit comprises charging control triode and charging shunting triode group; Discharge circuit comprises discharge control triode and discharge shunting triode group; All be parallel with electric capacity between the base stage of said charging control triode and discharge control triode and the collector electrode; All be parallel with resistance between base stage and the emitter, the collector electrode of charging control triode and discharge control triode links to each other with power supply unit is anodal respectively, and base stage links to each other with main control unit respectively through resistance; Said charging shunting triode group is formed in parallel by 4 triodes respectively with discharge shunting triode group; The collector electrode of triode links to each other in each triode group; The emitter of triode is connected with each other through resistance in each triode group; Be parallel with electric capacity between the base stage of each triode and the collector electrode; The base stage of each triode links to each other through the emitter of resistance with charging control triode in the said charging shunting triode group, and the base stage of each triode links to each other through the emitter of resistance with discharge control triode in the discharge shunting triode group; The collector electrode of each triode links to each other with charge power supply is anodal in the said charging shunting triode group; Link to each other with anode to be changed test side after the emitter of each triode is connected with each other through resistance in the charging shunting triode group; The collector electrode of each triode links to each other with anode to be changed test side in the discharge shunting triode group; Link to each other with the charge power supply negative pole after the emitter of each triode is connected with each other through resistance in the discharge shunting triode group; GND to be changed test side links to each other with the charge power supply negative pole; The emitter of each triode links to each other with Power Groud through resistance in the said discharge shunting triode group, and the collector electrode of each triode links to each other with Power Groud through electric capacity in the charging shunting triode group.
Preferably, to change into the quantity that circuit changes into module be 2-8 to said battery.
Preferably, said battery changes into circuit and changes into module by 4 and be formed in parallel, and said charge power supply is 100AH.
Preferably, said battery changes into circuit and changes into module by 8 and be formed in parallel, and said charge power supply is 200AH.
Preferably; Said main control unit comprises master cpu, first four-operational amplifier, second four-operational amplifier, high-precision amplifying, shunt, some resistance, some electric capacity, first diode, second diode, the 3rd diode and the 4th diode; Also be in series with shunt between said discharge shunting triode group collector electrode and the anode to be changed test side; Two current input terminals of shunt extremely link to each other with battery detecting to be changed is proper with discharge shunting triode group collector electrode respectively; The height voltage output end of shunt links to each other with inverting input with the homophase of high-precision amplifying through resistance respectively; The high-precision amplifying gain is provided with and is parallel with resistance on the end, is parallel with resistance and electric capacity between high-precision amplifying output and the signal ground end; Said high-precision amplifying output links to each other with three groups of in-phase input ends with two groups of inverting inputs of second four-operational amplifier through resistance respectively; Two groups of in-phase input ends of said second four-operational amplifier link to each other with master cpu through resistance respectively with three groups of inverting inputs; Two groups of outputs of second four-operational amplifier link to each other with the negative electrode of first diode with second diode respectively with three groups of outputs; Be parallel with electric capacity respectively between two groups of outputs of said second four-operational amplifier and inverting input, three groups of outputs and the inverting input; The anode of first diode and second diode links to each other with master cpu respectively; The anode of first diode and second diode links to each other through resistance and power supply unit are anodal respectively; The anode of first diode and second diode links to each other with four groups of outputs with one group of output of second four-operational amplifier respectively with the 4th diode through the 3rd diode respectively; One group of output links to each other with four groups of inverting inputs with one group of inverting input through resistance respectively with four groups of outputs; One group of in-phase input end with four groups of second four-operational amplifier links to each other with master cpu through resistance respectively, and one group of in-phase input end with four groups links to each other with the power supply unit negative pole through resistance; The anode of said first diode and second diode one group through resistance and first four-operational amplifier respectively links to each other with four groups of in-phase input ends; One group of first four-operational amplifier links to each other with Power Groud through resistance respectively with four groups of in-phase input ends; Be parallel with resistance between one group of inverting input of first four-operational amplifier and output, four groups inverting input and the output; One group of inverting input with four groups of first four-operational amplifier links to each other with signal ground through resistance respectively; One group of first four-operational amplifier links to each other with master cpu through resistance respectively with four groups of in-phase input ends; The output that said first four-operational amplifier is one group links to each other through the base stage of resistance with charging control triode, and the output that first four-operational amplifier is four groups links to each other through the base stage of resistance with discharge control triode.
Compared with prior art; The high capacity cell of the utility model changes into circuit can export the big electric current greater than 3A; The capacity that solved can't change into the problem of test greater than the 3A great-capacity power battery; For the high capacity cell field of changing into a kind of performance evaluation approach is provided, has well solved the problem that the great-capacity power battery latent defect can't be found.The utility model changes into test through the main control unit control battery charging and discharging unit with accurate control performance, when the capacity that changes into the module charge power supply is 25AH, can provide the electric current about 25A-200A to realize the accurate charge-discharge performance test of big capacity.
Description of drawings
Fig. 1 is the theory diagram that the utility model battery high capacity cell changes into circuit.
Fig. 2 is the circuit theory diagrams that the utility model changes into battery charging and discharging unit in the module
Fig. 3 is the circuit theory diagrams that the utility model changes into main control unit in the module.
Fig. 4 is the circuit theory diagrams that the utility model changes into module.
Embodiment
Below in conjunction with accompanying drawing and embodiment further explain the utility model, but the protection range of the utility model is not limited to this.
With reference to Fig. 1-4; The high capacity cell of the utility model changes into circuit; Comprise power supply unit and by the module that changes into of power supply unit power supply; The said module that changes into comprises the battery charging and discharging unit that is used to control main control unit, the charge power supply Vlcc that changes into the circuit charging and discharging state and is used to test battery charging and discharging to be changed; Said battery charging and discharging unit is connected in parallel on the charge power supply positive and negative polarities, and the battery charging and discharging unit links to each other with battery detecting end PI to be changed with main control unit respectively, and said battery charging and discharging unit is in series by charging circuit and discharge circuit.Said battery changes into circuit and changes into module by 4 and be formed in parallel, each change into module respectively charge power supply Vlcc and the battery detecting end PI to be changed through separately be connected to each other; Charge power supply provides 100 amperes electric current, divides 4 the tunnel to change into module through 4 and discharge and recharge for high capacity cell to be changed, and high capacity cell to be changed divides 4 the tunnel to concentrate charging or discharge.
Said battery charging and discharging unit is in series by charging circuit and discharge circuit, and said charging circuit comprises charging control triode Q1 and charging shunting triode group, and discharge circuit comprises discharge control triode Q6 and discharge shunting triode group.Charging control triode Q1 is 3055 with the model of discharge control triode Q6.Be parallel with capacitor C 2 between the base stage of said charging control triode Q1 and the collector electrode; Be parallel with resistance R 6 between the base stage of charging control triode Q1 and the emitter; The collector electrode of charging control triode Q1 links to each other with power supply unit is anodal, and base stage links to each other with main control unit through resistance R 1.Be parallel with capacitor C 8 between the base stage of said discharge control triode Q6 and the collector electrode; Be parallel with resistance R 17 between the base stage of discharge control triode Q6 and the emitter; The collector electrode of discharge control triode Q6 links to each other with power supply unit is anodal, and base stage links to each other with main control unit through resistance R 11.Wherein the resistance of resistance R 1 and resistance R 11 is 220 ohm, and the resistance of resistance R 6 and resistance R 17 is 5.1k ohm, and the model of capacitor C 2 and capacitor C 8 is 102.
Said charging shunting triode group is formed in parallel by triode Q2, triode Q3, triode Q4 and triode Q5; The collector electrode of triode Q2, triode Q3, triode Q4 and triode Q5 is connected with each other; The collector electrode of triode Q5 links to each other with the anodal Vlcc+ of charge power supply, and the collector electrode of triode Q5 links to each other with Power Groud GNDPW through capacitor C 1.The emitter of each triode is connected with each other through resistance in the charging shunting triode group, and the base stage of each triode links to each other through the emitter of resistance with charging control triode Q1.Be parallel with capacitor C 3 between the base stage of triode Q2 and the collector electrode, the base stage of triode Q2 links to each other through the emitter of resistance R 2 with charging control triode Q1, and the emitter of triode Q2 links to each other with anode to be changed test side PI+1 through resistance R 7; Be parallel with capacitor C 4 between the base stage of triode Q3 and the collector electrode, the base stage of triode Q3 links to each other through the emitter of resistance R 3 with charging control triode Q 1, and the emitter of triode Q3 links to each other with anode to be changed test side PI+1 through resistance R 8; Be parallel with capacitor C 5 between the base stage of triode Q4 and the collector electrode, the base stage of triode Q4 links to each other through the emitter of resistance R 4 with charging control triode Q1, and the emitter of triode Q4 links to each other with anode to be changed test side PI+1 through resistance R 9; Be parallel with capacitor C 6 between the base stage of triode Q5 and the collector electrode, the base stage of triode Q5 links to each other through the emitter of resistance R 5 with charging control triode Q1, and the emitter of triode Q5 links to each other with anode to be changed test side PI+1 through resistance R 10.
Said discharge shunting triode group is formed in parallel by triode Q7, triode Q8, triode Q9 and triode Q10, links to each other with anode to be changed test side PI+1 after the collector electrode of triode Q7, triode Q8, triode Q9 and triode Q10 links to each other.Link to each other with charge power supply negative pole Vlcc-after the emitter of each triode is connected with each other through resistance in the discharge shunting triode group, the base stage of each triode links to each other through the emitter of resistance with discharge control triode Q6.Be parallel with capacitor C 13 between the base stage of triode Q7 and the collector electrode, the base stage of triode Q7 links to each other through the emitter of resistance R 12 with discharge control triode Q6, and the emitter of triode Q7 links to each other with GND to be changed test side PI-1 through resistance R 23; Be parallel with capacitor C 10 between the base stage of triode Q8 and the collector electrode, the base stage of triode Q8 links to each other through the emitter of resistance R 13 with discharge control triode Q6, and the emitter of triode Q8 links to each other with GND to be changed test side PI-1 through resistance R 20; Be parallel with capacitor C 12 between the base stage of triode Q9 and the collector electrode, the base stage of triode Q9 links to each other through the emitter of resistance R 14 with discharge control triode Q6, and the emitter of triode Q9 links to each other with GND to be changed test side PI-1 through resistance R 24; Be parallel with capacitor C 11 between the base stage of triode Q10 and the collector electrode, the base stage of triode Q10 links to each other through the emitter of resistance R 16 with discharge control triode Q6, and the emitter of triode Q10 links to each other with GND to be changed test side PI-1 through resistance R 21.The emitter of triode Q10 links to each other with Power Groud GNDPW through resistance R 21, and GND to be changed test side PI-1 links to each other with charge power supply negative pole Vlcc-.
Wherein, The model of triode Q2, Q3, Q4, Q5, Q7, Q8, Q9 and triode Q10 is 2SD1065, and the resistance of resistance R 2, R3, R4 and R5 is 33 ohm, and the resistance of resistance R 12, R13, R14 and R16 is 50 ohm; The resistance of resistance R 7, R8, R9, R10, R20, R21, R23 and R24 is 0.05 ohm; The model of capacitor C 3, C4, C5 and C6 is 102, and the model of capacitor C 10, C11, C12 and C13 is 104, and the electric capacity of capacitor C 1 is 220uF.
Said main control unit comprises master cpu, the first four-operational amplifier N1, the second four-operational amplifier N2, high-precision amplifying N3, shunt R15, some resistance, some electric capacity, the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4.Also be in series with shunt R15 between the collector electrode of said triode Q10 and the anode to be changed test side PI+1; Two current input terminals of shunt R15 link to each other with anode to be changed test side PI+1 with triode Q10 collector electrode respectively, and the height voltage output end of shunt R15 links to each other with inverting input with the homophase of high-precision amplifying N3 through resistance R 38, resistance R 37 respectively.High-precision amplifying N3 gain is provided with and is parallel with resistance R 36 on the end, is parallel with resistance R 39 and capacitor C 17 between high-precision amplifying N3 output and the signal ground end.
The output of said high-precision amplifying N3 links to each other with three groups of in-phase input ends with two groups of inverting inputs of the second four-operational amplifier N2 through resistance R 35, R31 respectively; Two groups of in-phase input ends of the said second four-operational amplifier N2 link to each other with master cpu through resistance R 30, R32 respectively with three groups of inverting inputs; Two groups of outputs of the second four-operational amplifier N2 link to each other with the negative electrode of the first diode D1 and the second diode D2 respectively with three groups of outputs; Be parallel with capacitor C 14 and C15 respectively between the two groups of outputs of the said second four-operational amplifier N2 and inverting input, three groups of outputs and the inverting input; The anode of the first diode D1 and the second diode D2 links to each other with master cpu respectively; The anode of the first diode D1 and the second diode D2 links to each other through resistance R 28, R34 and power supply unit positive pole respectively; The anode of the first diode D 1 and the second diode D2 links to each other with four groups of outputs with one group of output of the second four-operational amplifier N2 respectively with the 4th diode D4 through the 3rd diode D3 respectively; One group of output links to each other with four groups of inverting inputs with one group of inverting input through resistance R 18, R22 respectively with four groups of outputs; One group of in-phase input end with four groups of the second four-operational amplifier N2 links to each other with master cpu through resistance R 19, R25 respectively; One group in-phase input end links to each other with the power supply unit negative pole with R26 through resistance R 19, and four groups in-phase input end links to each other with the power supply unit negative pole through resistance R 25, R27.
The anode of the said first diode D1 and the second diode D2 one group through resistance R 100, R104 and the first four-operational amplifier N1 respectively links to each other with four groups of in-phase input ends; One group of the first four-operational amplifier N1 links to each other with Power Groud GNDPW through resistance R 101, R105 respectively with four groups of in-phase input ends; One group of the first four-operational amplifier N1 links to each other with master cpu through resistance R 100, R104 respectively with four groups of in-phase input ends; Be parallel with resistance R 102, R106 respectively between the one group of inverting input of the first four-operational amplifier N1 and output, four groups inverting input and the output; One group of inverting input with four groups of the first four-operational amplifier N1 links to each other with signal ground SGND through resistance R 103, R107 respectively; Resistance R 102 links to each other with R103; Resistance R 101 links to each other with R100, and resistance R 107 links to each other with R106, and resistance R 105 links to each other with R104.The output that the said first four-operational amplifier N1 is one group links to each other through the base stage of resistance R 1 with charging control triode Q1, and the output that the first four-operational amplifier N is 1 four groups links to each other through the base stage of resistance R 11 with discharge control triode Q6.Said master cpu, the first four-operational amplifier N1, the second four-operational amplifier N2 and high-precision amplifying N3 are supplied power by power supply unit respectively; Anodal Vlcc+, the negative pole Vlcc-of power supply be respectively+15V and-15V, be parallel with a plurality of electric capacity between the anodal Vlcc+ of power supply and the negative pole Vlcc-.
Wherein the model of the first four-operational amplifier N1 and the second four-operational amplifier N2 is LM324; The model of high-precision amplifying N3 is AD620; The model of shunt R15 is FLQ1; The model of the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 is 1N4148; The resistance of resistance R 38, R37, R36, R39, R35, R31, R30, R32, R28, R34, R18, R22, R19, R25, R19, R26, R25 and R27 is 5.1k ohm, and the model of capacitor C 17 is 103, and the model of capacitor C 14 and C15 is 102.
Claims (5)
1. a high capacity cell changes into circuit; Comprise power supply unit and by the module that changes into of power supply unit power supply; The said module that changes into comprises the battery charging and discharging unit that is used to control main control unit, the charge power supply that changes into the circuit charging and discharging state and is used to test battery charging and discharging to be changed; Said battery charging and discharging unit is connected in parallel on the charge power supply positive and negative polarities; The battery charging and discharging unit links to each other with battery detecting end to be changed with main control unit respectively, and said battery charging and discharging unit is in series by charging circuit and discharge circuit, it is characterized in that; Said battery changes into circuit and is formed in parallel by a plurality of modules that change into, each change into module respectively charge power supply and the battery detecting end to be changed through separately be connected to each other; Said charging circuit comprises charging control triode and charging shunting triode group; Discharge circuit comprises discharge control triode and discharge shunting triode group; All be parallel with electric capacity between the base stage of said charging control triode and discharge control triode and the collector electrode; All be parallel with resistance between base stage and the emitter, the collector electrode of charging control triode and discharge control triode links to each other with power supply unit is anodal respectively, and base stage links to each other with main control unit respectively through resistance; Said charging shunting triode group is formed in parallel by 4 triodes respectively with discharge shunting triode group; The collector electrode of triode links to each other in each triode group; The emitter of triode is connected with each other through resistance in each triode group; Be parallel with electric capacity between the base stage of each triode and the collector electrode; The base stage of each triode links to each other through the emitter of resistance with charging control triode in the said charging shunting triode group, and the base stage of each triode links to each other through the emitter of resistance with discharge control triode in the discharge shunting triode group; The collector electrode of each triode links to each other with charge power supply is anodal in the said charging shunting triode group; Link to each other with anode to be changed test side after the emitter of each triode is connected with each other through resistance in the charging shunting triode group; The collector electrode of each triode links to each other with anode to be changed test side in the discharge shunting triode group; Link to each other with the charge power supply negative pole after the emitter of each triode is connected with each other through resistance in the discharge shunting triode group; GND to be changed test side links to each other with the charge power supply negative pole; The emitter of each triode links to each other with Power Groud through resistance in the said discharge shunting triode group, and the collector electrode of each triode links to each other with Power Groud through electric capacity in the charging shunting triode group.
2. high capacity cell according to claim 1 changes into circuit, it is characterized in that, it is 2-8 that said battery changes into the quantity that circuit changes into module.
3. high capacity cell according to claim 2 changes into circuit, it is characterized in that, said battery changes into circuit and changes into module by 4 and be formed in parallel, and said charge power supply is 100AH.
4. high capacity cell according to claim 2 changes into circuit, it is characterized in that, said battery changes into circuit and changes into module by 8 and be formed in parallel, and said charge power supply is 200AH.
5. change into circuit according to any described battery of claim 1-4 based on big electric current output; It is characterized in that; Said main control unit comprises master cpu, first four-operational amplifier, second four-operational amplifier, high-precision amplifying, shunt, some resistance, some electric capacity, first diode, second diode, the 3rd diode and the 4th diode; Also be in series with shunt between said discharge shunting triode group collector electrode and the anode to be changed test side; Two current input terminals of shunt extremely link to each other with battery detecting to be changed is proper with discharge shunting triode group collector electrode respectively; The height voltage output end of shunt links to each other with inverting input with the homophase of high-precision amplifying through resistance respectively; The high-precision amplifying gain is provided with and is parallel with resistance on the end, is parallel with resistance and electric capacity between high-precision amplifying output and the signal ground end; Said high-precision amplifying output links to each other with three groups of in-phase input ends with two groups of inverting inputs of second four-operational amplifier through resistance respectively; Two groups of in-phase input ends of said second four-operational amplifier link to each other with master cpu through resistance respectively with three groups of inverting inputs; Two groups of outputs of second four-operational amplifier link to each other with the negative electrode of first diode with second diode respectively with three groups of outputs; Be parallel with electric capacity respectively between two groups of outputs of said second four-operational amplifier and inverting input, three groups of outputs and the inverting input; The anode of first diode and second diode links to each other with master cpu respectively; The anode of first diode and second diode links to each other through resistance and power supply unit are anodal respectively; The anode of first diode and second diode links to each other with four groups of outputs with one group of output of second four-operational amplifier respectively with the 4th diode through the 3rd diode respectively; One group of output links to each other with four groups of inverting inputs with one group of inverting input through resistance respectively with four groups of outputs; One group of in-phase input end with four groups of second four-operational amplifier links to each other with master cpu through resistance respectively, and one group of in-phase input end with four groups links to each other with the power supply unit negative pole through resistance; The anode of said first diode and second diode one group through resistance and first four-operational amplifier respectively links to each other with four groups of in-phase input ends; One group of first four-operational amplifier links to each other with Power Groud through resistance respectively with four groups of in-phase input ends; Be parallel with resistance between one group of inverting input of first four-operational amplifier and output, four groups inverting input and the output; One group of inverting input with four groups of first four-operational amplifier links to each other with signal ground through resistance respectively; One group of first four-operational amplifier links to each other with master cpu through resistance respectively with four groups of in-phase input ends; The output that said first four-operational amplifier is one group links to each other through the base stage of resistance with charging control triode, and the output that first four-operational amplifier is four groups links to each other through the base stage of resistance with discharge control triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203549737U CN202260525U (en) | 2011-09-21 | 2011-09-21 | Large-capacity battery formation circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203549737U CN202260525U (en) | 2011-09-21 | 2011-09-21 | Large-capacity battery formation circuit |
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| Publication Number | Publication Date |
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| CN202260525U true CN202260525U (en) | 2012-05-30 |
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| CN2011203549737U Expired - Fee Related CN202260525U (en) | 2011-09-21 | 2011-09-21 | Large-capacity battery formation circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937378A (en) * | 2020-07-13 | 2022-01-14 | 珠海泰坦新动力电子有限公司 | Tandem formation system |
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2011
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937378A (en) * | 2020-07-13 | 2022-01-14 | 珠海泰坦新动力电子有限公司 | Tandem formation system |
| CN113937378B (en) * | 2020-07-13 | 2022-10-18 | 珠海泰坦新动力电子有限公司 | Tandem formation system |
| US11811016B2 (en) | 2020-07-13 | 2023-11-07 | Zhuhai Titans New Power Electronics Co., Ltd. | Series formation system |
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