WO2022120835A1 - Storage battery formation charging and discharging power supply and formation method therefor - Google Patents

Storage battery formation charging and discharging power supply and formation method therefor Download PDF

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WO2022120835A1
WO2022120835A1 PCT/CN2020/135908 CN2020135908W WO2022120835A1 WO 2022120835 A1 WO2022120835 A1 WO 2022120835A1 CN 2020135908 W CN2020135908 W CN 2020135908W WO 2022120835 A1 WO2022120835 A1 WO 2022120835A1
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charge
circuit
discharge
charging
battery
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PCT/CN2020/135908
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French (fr)
Chinese (zh)
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丁建华
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杭州铅锂智行科技有限公司
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Priority to PCT/CN2020/135908 priority Critical patent/WO2022120835A1/en
Publication of WO2022120835A1 publication Critical patent/WO2022120835A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage
    • H02J7/06Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention relates to a storage battery formation charging and discharging power supply, comprising a power transformer, a direct-current bus, a charging and discharging circuit, which is used for charging and discharging a group of storage batteries to be formed corresponding thereto, and a charging and discharging control unit for controlling the charging and discharging circuit, wherein the charging and discharging circuit is electrically connected to the direct-current bus. The storage battery formation charging and discharging power supply is characterized by further comprising a shunt circuit, wherein the charging and discharging circuit is electrically connected to, by means of the shunt circuit, a plurality of groups of storage batteries to be formed; the charging and discharging circuit charges, by means of the shunt circuit, the plurality of groups of storage batteries to be formed; and when one group of storage batteries to be formed is discharged with a certain discharge current, the discharge current charges, by means of the shunt circuit, another one group of storage batteries to be formed. The storage battery formation charging and discharging power supply of the present invention is low in terms of cost and has good safety performance.

Description

一种蓄电池化成充放电电源及其化成方法A kind of storage battery into charge and discharge power source and its transformation method 技术领域technical field
本发明涉及用于生产蓄电池的充放电领域。The present invention relates to the field of charging and discharging for the production of accumulators.
背景技术Background technique
蓄电池的生产工艺中,需要对蓄电池反复充放电进行化成。国内广泛使用的蓄电池化成充放电主电路结构,是可控硅电路结构,使用这样的结构,充电电能和放电电能会在交流电网上进行交换,使用时会对输入交流电网产生电网谐波污染,并浪费了大量电能。此外,现有的放电主电路结构都是一个充放电电路只给与其相应的一组蓄电池进行充放电,造成充放电电路的成本过高。In the production process of the battery, it is necessary to repeatedly charge and discharge the battery for formation. The battery widely used in China is transformed into a charging and discharging main circuit structure, which is a thyristor circuit structure. Using this structure, the charging electric energy and the discharging electric energy will be exchanged on the AC power grid, and the input AC power grid will produce grid harmonic pollution when used, and A lot of power is wasted. In addition, in the existing main discharge circuit structure, a charge and discharge circuit only charges and discharges a corresponding group of storage batteries, resulting in high cost of the charge and discharge circuit.
发明内容SUMMARY OF THE INVENTION
为了解决上述技术问题,本发明提供了一种蓄电池化成充放电电源,包括电源变压器、直流母线、用于对与其相对应的一组待化成蓄电池进行充放电的充放电电路、用于控制所述充放电电路的充放电控制单元,所述充放电电路与所述直流母线电连接,其特征在于,还包括分流电路,所述充放电电路通过所述分流电路与多组待化成蓄电池进行电连接,所述充放电电路通过所述分流电路给所述多组待化成蓄电 池进行充电,所述其中一组待化成蓄电池进行一定的放电电流放电时,所述放电电流通过所述分流电路给另外其中一组待化成蓄电池进行充电。In order to solve the above-mentioned technical problems, the present invention provides a charging and discharging power source for battery formation, which includes a power transformer, a DC bus, a charging and discharging circuit for charging and discharging a group of batteries to be formed corresponding to it, and a charging and discharging circuit for controlling the A charge-discharge control unit for a charge-discharge circuit, the charge-discharge circuit is electrically connected to the DC bus, and characterized in that it also includes a shunt circuit, and the charge-discharge circuit is electrically connected to a plurality of groups of batteries to be formed through the shunt circuit , the charging and discharging circuit charges the plurality of groups of batteries to be formed through the shunt circuit, and when one of the batteries to be formed is discharged with a certain discharge current, the discharge current passes through the shunt circuit to the other A set of batteries to be turned into batteries for charging.
进一步地,所述充放电控制单元控制所述充放电电路通过所述分流电路给所述多组待化成蓄电池进行充电。Further, the charge and discharge control unit controls the charge and discharge circuit to charge the plurality of groups of batteries to be formed through the shunt circuit.
进一步地,所述其中一组待化成蓄电池进行一定的放电电流放电时,所述充放电控制单元通过所述分流电路控制所述放电电流给另外其中一组待化成蓄电池进行充电。Further, when the battery to be transformed into one group is discharged with a certain discharge current, the charge-discharge control unit controls the discharge current to charge the battery to be transformed into another set of the battery through the shunt circuit.
进一步地,所述充放电电路的个数小于所述待化成蓄电池的组数。Further, the number of the charging and discharging circuits is less than the number of groups of the batteries to be turned into.
进一步地,所述分流电路为开关分流电路或电容分流电路或继电器分流电路。Further, the shunt circuit is a switch shunt circuit, a capacitor shunt circuit or a relay shunt circuit.
进一步地,所述每个充放电电路由对应的充放电控制单元控制,所述分流电路由对应的充放电控制单元控制。Further, each charge and discharge circuit is controlled by a corresponding charge and discharge control unit, and the shunt circuit is controlled by a corresponding charge and discharge control unit.
本发明还保护一种蓄电池化成充放电电源的化成方法。The invention also protects a method for forming a storage battery into a charging and discharging power source.
本发明一种蓄电池化成充放电电源成本低、安全性能好。The invention has the advantages of low cost and good safety performance as a charging and discharging power source of the storage battery.
附图说明Description of drawings
图1是本发明充放电电源的原理框图;Fig. 1 is the principle block diagram of the charging and discharging power supply of the present invention;
图2是本发明的充放电电源部分的原理结构示意图。FIG. 2 is a schematic diagram of the principle structure of the charging and discharging power supply part of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明做进一步描述。The present invention will be further described below with reference to the accompanying drawings.
如图1、2所示,本发明的一种蓄电池化成充放电电源,包括:电源变压器1、三相电抗器2以及由三对作为全控型电力电子模块的IGBT功率模块Q1和Q2、Q3和Q4、Q5和Q6构成的三相PWM可逆整流器3、直流母线单元4,以及由IGBT功率管Q11组成的第一充放电电路C 1和由IGBT功率管Q21组成的第二充放电电路C k,其中,Q1、Q3和Q5为上管,Q2、Q4和Q6为下管,电源变压器1的三相原边线圈组为三角型连接,与电网电源相连,电源变压器1的三相副边线圈组为星型连接,分别与三相电抗器2的进线相连,三相电抗器2的三个出线分别接至Q1的发射极和Q2的集电极、Q3的发射极和Q4的集电极、Q5的发射极和Q6的集电极,Q1、Q3、Q5的集电极并接后、与直流母线单元4的正直流母线A+相连,Q2、Q4、Q6的发射极并接后与直流母线单元4的负直流母线B-相连,正、负直流母线A+和B-之间并接有多个充放电电路,即C 1至C K,K的值大于等于2,其中的两个分别是第一充放电电路C 1和第K充放电电路C K,其他充放电电路图中未显示。每一个充放电电路连接到分流电路7上,每一组待化成的蓄电池组B 1到B m连接到分流电路7上,每一组待化成的蓄电池组根据需要可以通过分流电路7连接到相应的充放电电路C 1至C K的任何充放电电 路组合上,如何所示,蓄电池组B 1和B m通过开关K1、K2分别连接到充放电电路C 1上,根据需要其中至少部分充放电电路可以给至少两组待化成的蓄电池进行充电,也可以是每一个充放电电路上可以给每一组待化成的蓄电池进行化成充电,一组电池可以根据设计设计成10个或20个电池为一组。分流电路7可以是开关矩阵如图2中所示、也可以是继电器、电容等等可以进行分流控制的电路。对充放电电路C 1至C K和分流电路7进行控制的充放电控制单元8分别和充放电电路、分流电路7连接。充放电控制单元8可以是1个控制单元同时控制充放电电路C 1至C K和分流电路7,也可以是多个,即每个充电电路和分流电路具有单独的控制单元,只要能实现本发明的目的即可,通过对分流电路7的控制也可以根据需要将待化成蓄电池之间进行电连接。 As shown in Figures 1 and 2, a battery of the present invention is turned into a charging and discharging power supply, including: a power transformer 1, a three-phase reactor 2, and three pairs of IGBT power modules Q1, Q2, Q3 as fully-controlled power electronic modules A three-phase PWM reversible rectifier 3 composed of Q4, Q5 and Q6, a DC bus unit 4, a first charge and discharge circuit C1 composed of an IGBT power tube Q11, and a second charge and discharge circuit Ck composed of the IGBT power tube Q21 , among them, Q1, Q3 and Q5 are upper tubes, Q2, Q4 and Q6 are lower tubes, the three-phase primary coil group of power transformer 1 is delta-connected and connected to the grid power supply, and the three-phase secondary coil group of power transformer 1 It is a star connection and is connected to the incoming line of the three-phase reactor 2 respectively. The three outgoing lines of the three-phase reactor 2 are respectively connected to the emitter of Q1 and the collector of Q2, the emitter of Q3 and the collector of Q4, Q5 The emitters of Q1, Q3, and Q5 are connected in parallel with the positive DC bus A+ of the DC bus unit 4, and the emitters of Q2, Q4, and Q6 are connected in parallel with the DC bus unit 4. The negative DC bus B- is connected, and a plurality of charge and discharge circuits are connected in parallel between the positive and negative DC bus A+ and B-, namely C 1 to C K , the value of K is greater than or equal to 2, two of which are the first charge and discharge circuits respectively. The discharge circuit C 1 and the K-th charge and discharge circuit CK , and other charge and discharge circuits are not shown in the diagrams. Each charging and discharging circuit is connected to the shunt circuit 7, and each group of battery packs B1 to Bm to be formed is connected to the shunt circuit 7, and each group of battery packs to be formed can be connected to the corresponding shunt circuit 7 as required. On any combination of charging and discharging circuits C1 to CK , as shown, the battery packs B1 and Bm are respectively connected to the charging and discharging circuit C1 through switches K1 and K2, and at least part of them are charged and discharged as required. The circuit can charge at least two groups of batteries to be formed, or each charge and discharge circuit can charge each group of batteries to be formed. A group of batteries can be designed into 10 or 20 batteries according to the design. One group. The shunt circuit 7 can be a switch matrix as shown in FIG. 2 , or a circuit that can perform shunt control, such as a relay, a capacitor, or the like. A charge and discharge control unit 8 that controls the charge and discharge circuits C 1 to CK and the shunt circuit 7 is connected to the charge and discharge circuit and the shunt circuit 7 , respectively. The charge and discharge control unit 8 can be one control unit that simultaneously controls the charge and discharge circuits C 1 to CK and the shunt circuit 7 , or can be multiple, that is, each charge circuit and shunt circuit has a separate control unit, as long as this can be achieved. The purpose of the invention is sufficient. By controlling the shunt circuit 7, the batteries to be formed can be electrically connected as required.
下面以充电电路C 1和C K对电池B 1、电池B m充电、放电为例,详细描述其工作过程: The working process of the battery B 1 and the battery B m is described in detail below by taking the charging circuit C 1 and the CK charging and discharging the battery B 1 and the battery B m as an example:
当充电电源开始工作时,即充电电路对电池开始化成充电时,充放电控制单元8控制充放电电路C 1对电池B 1进行大电流充电一段时间后,充放电控制单元8控制分流器7,控制充放电电路C 1对电池B 1进行小电流充电以及闭合开关K2对电池B m进行一定的电流充电,同时控制充放电电路C k对电池B m也进行一定的电流进行充电,从而达到电池B m的化成充电电流。化成充电时,充放电控制单元8可以根据 化成电池的特性获取充电电流大小,并控制充放电电路提供所需的电流大小,同时,当充放电电路提供的电流足够大时,通过对分流器7的控制,实现多余的电流分流到其他需要化成电流的待化成电池上,从而可以充分利用各个充放电电路的充电电流,通过组合不同充放电电路提供的电流,这样一方面可以降低充放电电路可以提供的最大功率,另一方面也可以减少充放电电路的个数,而不需要一个充放电电路对应一组充电化成电池,也就是最好K的值小于m的值。大大降低的生产成本。当电池B 1放电、电池B m充电时,充放电控制单元8可以控制充放电电路C 1关闭,电池B 1进行放电并通过分流电路7将一定的放电电流对电池Bm进行充电,这样,电能在蓄电池之间得到了充分的利用,而不是直接通过直流母线反馈给电网。这样可以大大降低直流母线的用电负载,从而降低直流母线的使用成本,也提高了直流母线的用电安全,也避免了电网谐波污染、节约了电能。放电电流除了通过分流电路给其他待化成蓄电池进行充电,也可以是通过分流电路及充电放电路再给其他待化成蓄电池进行充电。此外放出的电能与需要输入的电能不可能完全平衡,当直流母线单元4的电能有富余,即:正直流母线的电压有上升的趋势时,这富余的电能通过PWM可逆整流器3的功率模块按一定的顺序导通和截止,将直流电逆转变成高功率因数的交流电回馈电网供给用户其它用电设备使用;当直流母 线单元4的电能不足时,则由三相PWM可逆整流器3工作在整流状态下,及时补充。本发明的任何一个充放电电路的分流可以分流到任意一组或多组需要充电化成的蓄电池上,蓄电池放电时,放电电流也可以根据需要给需要充电化成的任意一组或多组蓄电池进行充电化成。 When the charging power source starts to work, that is, when the charging circuit begins to charge the battery, the charging and discharging control unit 8 controls the charging and discharging circuit C1 to charge the battery B1 with a large current for a period of time, and then the charging and discharging control unit 8 controls the shunt 7, Control the charging and discharging circuit C1 to charge the battery B1 with a small current and close the switch K2 to charge the battery Bm with a certain current, and control the charging and discharging circuit Ck to also charge the battery Bm with a certain current, so as to achieve a The conversion of B m into the charging current. During chemical charging, the charging and discharging control unit 8 can obtain the charging current according to the characteristics of the chemical battery, and control the charging and discharging circuit to provide the required current. control, to realize the shunting of excess current to other batteries to be converted into current, so that the charging current of each charging and discharging circuit can be fully utilized, and the current provided by different charging and discharging circuits can be combined. The maximum power provided, on the other hand, can also reduce the number of charge and discharge circuits, without the need for one charge and discharge circuit to correspond to a group of charged batteries, that is, the best value of K is less than the value of m. Greatly reduced production costs. When the battery B 1 is discharged and the battery B m is charged, the charging and discharging control unit 8 can control the charging and discharging circuit C 1 to close, the battery B 1 is discharged, and the battery Bm is charged by a certain discharge current through the shunt circuit 7, so that the electric energy It is fully utilized between the batteries, instead of being fed back to the grid directly through the DC bus. In this way, the power load of the DC bus can be greatly reduced, thereby reducing the use cost of the DC bus, improving the power safety of the DC bus, avoiding the harmonic pollution of the power grid, and saving electric energy. In addition to charging other batteries to be formed through the shunt circuit, the discharge current can also be used to charge other batteries to be formed through the shunt circuit and the charging and discharging circuit. In addition, the released electric energy and the electric energy to be input cannot be completely balanced. When the electric energy of the DC bus unit 4 has surplus, that is, when the voltage of the positive DC bus has a rising trend, the surplus electric energy passes through the power module of the PWM reversible rectifier 3 to press A certain sequence of turn-on and turn-off turns the DC power into a high power factor AC power back to the grid for use by other electrical equipment of the user; when the power of the DC bus unit 4 is insufficient, the three-phase PWM reversible rectifier 3 works in the rectification state down, replenish in time. The shunting of any one of the charging and discharging circuits of the present invention can be shunted to any one or more groups of batteries that need to be charged. When the batteries are discharged, the discharge current can also be used to charge any one or more groups of batteries that need to be charged. into.
本发明还保护了一种蓄电池化成充放电电源的化成方法,充放电控制单元控制分流电路给待化成充电的蓄电池进行分流充电;待化成放电蓄电池放电时,充放电控制单元控制分流电路给待化成充电蓄电池充电。The invention also protects a formation method for the formation of a battery into a charge and discharge power source. The charge and discharge control unit controls the shunt circuit to perform shunt charging for the battery to be formed and charged; when the battery to be formed and discharged is discharged, the charge and discharge control unit controls the shunt circuit. Rechargeable battery is charged.
以上所述的实施例只是本发明的一种较佳的方案,并非对本发明作任何形式上的限制,在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。The above-mentioned embodiment is only a preferred solution of the present invention, and does not limit the present invention in any form, and there are other variations and modifications under the premise of not exceeding the technical solution recorded in the claims.

Claims (7)

  1. 一种蓄电池化成充放电电源,包括电源变压器、直流母线、用于对与其相对应的一组待化成蓄电池进行充放电的充放电电路、用于控制所述充放电电路的充放电控制单元,所述充放电电路与所述直流母线电连接,其特征在于,还包括分流电路,所述充放电电路通过所述分流电路与多组待化成蓄电池进行电连接,所述充放电电路通过所述分流电路给所述多组待化成蓄电池进行充电,所述其中一组待化成蓄电池进行一定的放电电流放电时,所述放电电流通过所述分流电路给另外其中一组待化成蓄电池进行充电。A battery-forming charge-discharge power source, comprising a power transformer, a DC bus, a charge-discharge circuit for charging and discharging a corresponding group of batteries to be transformed into a battery, and a charge-discharge control unit for controlling the charge-discharge circuit, the The charging and discharging circuit is electrically connected to the DC bus, and it is characterized in that it further comprises a shunt circuit, and the charging and discharging circuit is electrically connected to a plurality of groups of batteries to be formed through the shunt circuit, and the charging and discharging circuit passes the shunt circuit. The circuit charges the plurality of groups of batteries to be formed, and when one group of batteries to be formed is discharged with a certain discharge current, the discharge current charges the other group of batteries to be formed through the shunt circuit.
  2. 如权利要求1所述的一种蓄电池化成充放电电源,其特征在于,所述充放电控制单元控制所述充放电电路通过所述分流电路给所述多组待化成蓄电池进行充电。The battery formation charge and discharge power source according to claim 1, wherein the charge and discharge control unit controls the charge and discharge circuit to charge the plurality of groups of batteries to be formed through the shunt circuit.
  3. 如权利要求1所述的一种蓄电池化成充放电电源,其特征在于,所述其中一组待化成蓄电池进行一定的放电电流放电时,所述充放电控制单元通过所述分流电路控制所述放电电流给另外其中一组待化成蓄电池进行充电。The battery formation charge and discharge power source according to claim 1, wherein when the battery to be formed into one group is discharged with a certain discharge current, the charge and discharge control unit controls the discharge through the shunt circuit The current charges the other set of batteries to be formed.
  4. 如权利要求1-3任意一项所述的一种蓄电池化成充放电电源,其特征在于,所述充放电电路的个数小于所述待化成蓄电池的组数。The battery-forming charge-discharge power source according to any one of claims 1-3, wherein the number of the charge-discharge circuits is smaller than the number of groups of the batteries to be turned into.
  5. 如权利要求1-3任意一项所述的一种蓄电池化成充放电电源,其特征在于,所述分流电路为开关分流电路或电容分流电路或继电器分流电路。The battery-forming charge-discharge power supply according to any one of claims 1-3, wherein the shunt circuit is a switch shunt circuit, a capacitor shunt circuit, or a relay shunt circuit.
  6. 如权利要求1-3任意一项所述的一种蓄电池化成充放电电源,其特征在于,所述每个充放电电路由对应的充放电控制单元控制,所述分流电路由对应的充放电控制单元控制。The battery-forming charge-discharge power source according to any one of claims 1-3, wherein each charge-discharge circuit is controlled by a corresponding charge-discharge control unit, and the shunt circuit is controlled by a corresponding charge-discharge control unit unit control.
  7. 一种蓄电池化成充放电电源的化成方法,所述蓄电池化成充放电电源包括充放电电路以及分流电路、与所述充放电电路以及所述分流电路连接的充放电控制单元,其特征在于,所述充放电控制单元控制所述分流电路给待化成充电蓄电池进行分流充电;所述待化成放电蓄电池放电时,所述充放电控制单元控制所述分流电路给所述待化成充电蓄电池充电。A method for transforming a battery into a charge and discharge power source, the battery transforming into a charge and discharge power source includes a charge and discharge circuit, a shunt circuit, and a charge and discharge control unit connected to the charge and discharge circuit and the shunt circuit, characterized in that the The charge and discharge control unit controls the shunt circuit to perform shunt charging of the rechargeable battery to be formed; when the battery to be formed and discharged is discharged, the charge and discharge control unit controls the shunt circuit to charge the rechargeable battery to be formed.
PCT/CN2020/135908 2020-12-11 2020-12-11 Storage battery formation charging and discharging power supply and formation method therefor WO2022120835A1 (en)

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CN103746439A (en) * 2013-12-19 2014-04-23 江苏金帆电源科技有限公司 Energy-saving type storage battery formation charge and discharge power supply
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CN203632332U (en) * 2013-12-19 2014-06-04 江苏金帆电源科技有限公司 Energy-saving and environment-protecting storage battery forming charging and discharging power supply
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CN102364742A (en) * 2011-09-21 2012-02-29 江苏金帆电源科技有限公司 Storage battery formation processing charging and discharging main circuit structure
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