Matrix type wiring method and wiring circuit applied to storage battery

Abstract

The invention relates to the technical field of storage battery wiring, and particularly provides a matrix type wiring method and wiring circuit applied to a storage battery, and the method comprises the following steps: dividing the storage battery into n battery packs, distributing m batteries for each battery pack, connecting the batteries in each battery pack in series, and connecting the battery packs in parallel, obtaining a matrix type power supply circuit; the battery management module is connected with the matrix type power supply circuit; wherein the information of the output voltage of the matrix power supply circuit, the input current of the charging circuit and / or the electric quantity of each battery pack is acquired through the battery management module, and the working mode of each battery pack is controlled based on the information. According to the matrix type wiring method and wiring circuit applied to the storage battery, the battery packs are mutually independent, the replacement cost of the storage battery of a direct-current screen cabinet can be reduced, the battery packs can be monitored, and the use safety and stability of the storage battery are improved.

Description

Technical Field

[0001] This invention relates to the field of battery wiring technology, and in particular to a matrix wiring method and wiring circuit for batteries. Background Technology

[0002] The storage battery of a DC power supply cabinet is an important component of the DC power supply cabinet. It is a device that provides backup DC power to the DC power supply cabinet in the event of a power outage or failure, and has the function of storing electrical energy and maintaining the stable operation of the DC system.

[0003] like Figure 1 As shown, existing DC power supply cabinet batteries are typically composed of multiple batteries connected in series, which are then connected to AC / DC chargers and load devices to form a power module. This type of power module lacks intelligent management functions and battery life warnings. If damaged batteries are not replaced in a timely manner, there is a risk of power outages. Furthermore, battery replacement requires either replacing all nine batteries or manually measuring and matching individual cells before partial replacement, resulting in either high battery replacement costs or high labor costs.

[0004] There is currently no effective solution to the problem of high battery replacement costs in DC power supply cabinets in related technologies. Summary of the Invention

[0005] The present invention provides a matrix wiring method and wiring circuit for storage batteries, which at least solves the problem of high battery replacement costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a matrix wiring method for storage batteries, comprising the following steps: dividing the storage battery into n battery groups, and allocating m cells to each battery group, wherein n and m are both natural numbers, n is determined based on the cost of the storage battery, and m is determined based on the output voltage and boost ratio of each battery group; connecting the cells in each battery group in series with each other, and connecting the battery groups in parallel with each other to obtain a matrix power supply circuit; connecting a battery management module to the matrix power supply circuit; wherein the battery management module is connected to a charging circuit and a load circuit; obtaining information on the output voltage of the matrix power supply circuit, the input current of the charging circuit, and / or the charge level of each battery group through the battery management module, and controlling the operating mode of each battery group based on the information; wherein the operating mode includes: charging mode, idle mode, discharging mode, and / or standby mode.

[0008] Preferably, the battery is divided into n groups, each of which is assigned m batteries, wherein n and m are both natural numbers, n is determined according to the cost of the battery, and m is determined according to the output voltage of each group and the boost ratio, comprising: determining the number of groups n of the battery based on the cost of the battery, and dividing the battery into n groups; determining the number m of batteries in each group according to the condition that the maximum value of the input voltage of each group is less than the minimum value of the output voltage, and the boost ratio is less than 4, and assigning m batteries to each group.

[0009] Preferably, the battery management module is connected to the matrix power supply circuit, wherein the battery management module is connected to the charging circuit and the load circuit, comprising: connecting the matrix power supply circuit to the input terminal of the battery management module; connecting the output terminal of the battery management module to the load circuit and the charging circuit; connecting the communication terminal of the battery management module to the computing device to obtain the output voltage of the matrix power supply circuit, the power of each group, and / or the input current of the charging circuit.

[0010] Preferably, the operation mode of each group is controlled based on the information, comprising: comparing the output voltage of the matrix battery circuit with x voltage thresholds when the input current of the charging circuit is 0; wherein x equals m-1, and the x voltage thresholds are sequentially recorded from large to small as: x-th threshold, (x-1)-th threshold,..., i-th threshold,..., 1-th threshold, 0

[0011] Preferably, the (i+1) groups are switched to the discharge mode and the (m-i-1) groups are switched to the standby mode by the battery management module, comprising: recording the discharge times of each group by the battery management module; wherein each time the group enters the discharge mode is recorded as one discharge; selecting (i+1) groups from the m groups in order of the discharge times from low to high by the battery management module, switching the (i+1) groups to the discharge mode, and switching the remaining (m-i-1) groups to the standby mode.

[0012] Preferably, controlling the operating mode of each battery pack based on the information includes: when the output voltage of the battery pack is lower than a first set value, switching the battery pack to charging mode through the battery management module; when the battery pack voltage is charged to a second set value, stopping charging, and switching the battery pack to idle mode through the battery management module.

[0013] Secondly, the present invention provides a matrix wiring circuit for a storage battery, comprising: a matrix power supply circuit, including n battery packs connected in parallel; each battery pack including m batteries connected in series; wherein n and m are both natural numbers, n is determined based on the cost of the storage battery, and m is determined based on the output voltage and boost ratio of each battery pack; a power management circuit, connected to the matrix power supply circuit, a charging circuit, and a load circuit, for acquiring information on the output voltage of the matrix power supply circuit, the input current of the charging circuit, and / or the charge of each battery pack, and controlling the operating mode of each battery pack based on the information; wherein the operating mode includes: charging mode, idle mode, discharging mode, and / or standby mode.

[0014] Preferably, the power management circuit includes: a power management module; the input terminal of the power management module is connected to each of the battery packs in the matrix power circuit; the output terminal of the battery management module is connected to a load circuit and a charging circuit; the communication terminal of the battery management module is connected to a computing device to obtain the output voltage of the matrix power circuit, the power of each of the battery packs and / or the input current of the charging circuit.

[0015] Preferably, the charging circuit includes: an AC / DC charger; the input terminal of the AC / DC charger is connected to the mains power, and the output terminal of the AC / DC charger is connected to the load circuit and the battery management module, so as to communicate between the PFC control module and LLC control module inside the AC / DC charger and the battery management module.

[0016] Preferably, n is 2, 3 or 4; m is 2, 3 or 4.

[0017] Compared with the prior art, the above-described technical solution of the present invention has the following advantages:

[0018] This invention provides a matrix wiring method and circuit for storage batteries. By considering the cost of the storage battery, the output voltage of the battery pack, and the boost ratio, the number of battery packs and the number of cells in each battery pack are determined to ensure the power supply requirements of the storage battery. Furthermore, by connecting the cells of each battery pack in series and the battery packs in parallel, a matrix power circuit is formed, making each battery pack independent. Only the battery pack with the damaged cell needs to be disconnected and replaced, while the remaining battery packs do not need to be replaced, thus reducing the battery replacement cost. The battery management module monitors each battery pack, obtaining the output voltage of the matrix power circuit, the input current of the charging circuit, and / or information about the circuits of each battery pack, and controls the operating mode of each battery pack. This improves the safety and stability of battery use, allows for timely detection of battery damage, and solves the problem of high battery replacement costs in related technologies. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other embodiments based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a wiring circuit used in storage batteries in related technologies.

[0021] Figure 2 This is a schematic flowchart of a matrix wiring method for storage batteries according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of a matrix wiring circuit applied to a storage battery according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection relationship of the various control modules in a matrix wiring circuit applied to a storage battery according to an embodiment of the present invention:

[0024] Figure 5 This is a top view of the battery management module according to an embodiment of the present invention;

[0025] Figure 6 This is a front view of the battery management module according to an embodiment of the present invention;

[0026] 1. Battery Management Module. Detailed Implementation

[0027] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0028] like Figure 2 As shown, in order to reduce the replacement cost of batteries in DC power supply cabinets, an embodiment of the present invention provides a matrix wiring method for batteries, including the following steps:

[0029] Step S1: Divide the storage battery into n battery groups and allocate m batteries to each battery group, where n is determined based on the cost of the storage battery and m is determined based on the output voltage and boost ratio of each battery group.

[0030] Step S2: Connect the individual cells in each battery pack in series and connect the battery packs in parallel to obtain a matrix power supply circuit.

[0031] Step S3: Connect the battery management module to the matrix power supply circuit; wherein, the battery management module is connected to the charging circuit and the load circuit.

[0032] Step S4: Obtain information on the output voltage of the matrix power circuit, the input current of the charging circuit, and / or the power level of each battery pack through the battery management module, and control the operating mode of each battery pack based on the information; wherein, the operating mode includes: charging mode, idle mode, discharging mode, and / or standby mode.

[0033] Specifically, in step 1, the total number of batteries in the matrix wiring method applied to the storage batteries is n x m, where n corresponds to the number of layers of the battery pack connected in parallel. The selection of n mainly depends on the purchase cost of the storage batteries, and the selection of m mainly considers the output voltage and boost ratio of the battery pack, so that the power supply demand can still be guaranteed while reducing the cost of the storage batteries.

[0034] In step 2, by connecting the batteries in each battery pack in series and connecting the battery packs in parallel to form an n×m matrix wiring circuit, each battery pack can work independently. When a battery in one battery pack is damaged, the battery pack can be disconnected, and the remaining battery packs do not need to be replaced, thereby reducing the replacement cost of the battery.

[0035] In step S4, the battery management module can monitor the matrix power supply circuit, charging circuit, and load circuit, thereby obtaining at least the output voltage of the matrix power supply circuit, the input current of the charging circuit, and the power information of each battery pack, and managing the battery packs in groups to control the working mode of each battery pack.

[0036] This invention provides a matrix wiring method for storage batteries. By considering the cost of the storage battery, the output voltage of the battery pack, and the boost ratio, the number of battery packs and the number of cells in each battery pack are determined, ensuring the power supply requirements of the storage battery are met. Furthermore, by connecting the cells of each battery pack in series and the battery packs in parallel, a matrix power circuit is formed, making each battery pack independent. Only the battery pack with the damaged cell needs to be disconnected and replaced, while the remaining battery packs do not need to be replaced, thus reducing battery replacement costs. A battery management module monitors each battery pack, acquiring the output voltage of the matrix power circuit, the input current of the charging circuit, and / or information about the circuitry of each battery pack, and controls the operating mode of each battery pack. This improves the safety and stability of battery use, allows for timely detection of battery damage, and solves the problem of high battery replacement costs in related technologies.

[0037] More preferably, step S1 includes the following steps:

[0038] Step S11: Based on the cost of the storage battery, determine the number of battery groups n, and divide the storage battery into n battery groups.

[0039] Step S12: Based on the set conditions that the maximum value of the input voltage of each battery pack is less than the minimum value of the output voltage and the boost ratio is less than 4, determine the number of cells m in each battery pack and allocate m cells to each battery pack.

[0040] In this embodiment of the invention, by setting the value of m, the maximum value of the input voltage of each battery pack is less than the minimum value of the output voltage, and the boost ratio is less than 4. This ensures voltage matching, avoids boost circuit failure, and optimizes circuit efficiency and safety.

[0041] Furthermore, the preferred values ​​for n and m are n = 2, 3, or 4, and m = 2, 3, or 4.

[0042] The matrix power supply circuit obtained in step S2 can be found in [reference]. Figure 3 .

[0043] Preferably, step S3 includes the following steps:

[0044] Step S31: Connect the matrix power supply circuit to the input terminal of the battery management module;

[0045] Step S32: Connect the output terminal of the battery management module to the load circuit and the charging circuit;

[0046] Step S33: Connect the communication terminal of the battery management module to the computing device to obtain the output voltage of the matrix power circuit, the power of each battery pack, and / or the input current of the charging circuit.

[0047] Specifically, the battery management module is preferably a PW110 module, and more specifically, a PWZLXJ110-G10 DC power supply online inspection device.

[0048] like Figure 5 , Figure 6 As shown, taking a battery pack with 3 groups and 3 cells in each group as an example, the input terminals of the matching battery management module include: BAT1+, BAT1-, BAT2+, BAT2-, BAT3+, and BAT3-; connect the positive and negative terminals of the 1st, 2nd, and 3rd battery groups to the corresponding input terminals respectively.

[0049] The communication terminals (485+, 485-) of the battery management module are connected to a computing device via a 485 communication cable, preferably a computer.

[0050] The output terminals of the battery management module include: OUT+ and OUT-.

[0051] refer to Figure 3 , Figure 4 The charging circuit preferably includes: an AC / DC charger, the input terminal of which is connected to the mains power, and the output terminal of which is connected to the load circuit and the battery management module, so as to communicate between the PFC (Power Factor Correction) control module and LLC (LLC Resonant Converter) control module inside the AC / DC charger and the DSP (Digital Signal Processing Module) in the battery management module.

[0052] The AC mains power is filtered by an EMC (Electromagnetic Compatibility Filter) before being input into the AC / DC charger. It then sequentially enters the PFC control module and LLC control module inside the charger. The PFC control module performs power correction on the filtered AC mains power, and the LLC control module performs resonant conversion on the power-corrected AC mains power to obtain DC power.

[0053] The direct current output by the AC / DC charger is connected to each charger group of the matrix power circuit through the battery management module. The DSP module samples the temperature of the matrix power circuit and obtains the output voltage of the matrix power circuit, the power of each battery group, and / or the input current of the charging circuit.

[0054] Preferably, step S4 includes the following steps:

[0055] Step S41: When the input current of the charging circuit is 0, compare the output voltage of the matrix battery circuit with x voltage thresholds; where x is equal to m - 1, and the x voltage thresholds are denoted in descending order as: the x-threshold, the (x - 1)-threshold,..., the i-threshold,..., the 1-threshold, 0 < i < x; the voltage thresholds are determined according to the number of battery groups m, the working voltage of the load circuit, and the energy efficiency.

[0056] Step S42: If the output voltage is greater than the x-threshold, switch the m battery groups to the discharge mode through the battery management module.

[0057] Step S43: If the output voltage is greater than the i-threshold and less than the (i + 1)-threshold, switch the (i + 1) battery groups to the discharge mode and the (m - i - 1) battery groups to the standby mode through the battery management module.

[0058] Step S44: If the output voltage is less than the 1-threshold, switch 1 battery group to the discharge mode and the (m - 1) battery groups to the standby mode through the battery management module.

[0059] Specifically, taking the number of battery groups n = 3 and the energy efficiency of 80% as an example, there are 2 set voltage thresholds. Among them, the 1-threshold is 25% of the rated voltage, and the 2-threshold is 50% of the rated voltage.

[0060] Taking the number of battery groups n = 4 and the energy efficiency of 80% as an example, there are 3 set voltage thresholds. Among them, the 1-threshold is 20% of the rated voltage, the 2-threshold is 40% of the rated voltage, and the 3-threshold is 60% of the rated voltage.

[0061] In the embodiment of the present invention, by setting multiple voltage thresholds matching the number of battery groups and comparing the output voltage with each voltage threshold, it is convenient to determine the number of battery groups that need to be discharged and make other battery groups in the standby state, so as to avoid over-discharge loss of the battery, balance the discharge depth of each group of batteries, and ensure the stability and reliability of the output provided by the matrix power circuit.

[0062] More preferably, step S43 includes:

[0063] Step S431: Record the number of discharges for each battery pack through the battery management module; wherein, each time a battery pack enters the discharge mode is counted as one discharge.

[0064] In step S432, the battery management module selects (i+1) battery packs from the m battery packs in order of increasing discharge count, switches (i+1) battery packs to discharge mode, and switches the remaining (mi-1) battery packs to standby mode.

[0065] Specifically, in this embodiment of the invention, when switching the battery pack into discharge mode, the number of discharge cycles of each battery pack is considered. The battery pack with fewer discharge cycles is prioritized and cyclically called in sequence to avoid uneven battery discharge cycles, which would cause the lifespan of individual battery packs to decline, thereby ensuring a longer overall battery life.

[0066] More preferably, step S4 further includes:

[0067] Step S45: When the output voltage of the battery pack is lower than the first set value, the battery pack is switched to charging mode through the battery management module.

[0068] Step S46: When the battery pack voltage is charged to the second set value, charging is stopped, and the battery pack is switched to idle mode through the battery management module.

[0069] Specifically, the first set value is related to the output voltage of the battery pack, preferably 36V, and the second set value is greater than the first set value and ensures a certain margin, preferably 42.3V.

[0070] It is worth noting that steps S41-S44 relate to the switching between discharge mode and standby mode, while steps S45-S46 relate to the switching between charging mode and idle mode. Since the condition for entering discharge mode is that the input current of the charging circuit is 0, i.e., the mains power is off, the battery will not charge at this time. Therefore, the switching between charging mode and idle mode is usually performed when the battery pack is in standby mode and mains power is available.

[0071] This invention, by switching the operating mode of the battery pack, ensures that when the charge of each battery pack is below a first set value and the input current of the charging circuit is not zero, the battery management module can automatically switch to the charging mode until the charge of the battery pack reaches a second set value. At this point, the battery management module switches the battery pack to the idle mode, thus preventing the battery pack from frequently entering the charging mode due to self-discharge when there is mains power, which would cause electrochemical loss, lifespan reduction, and decreased safety and energy efficiency.

[0072] like Figure 3As shown, one embodiment of the present invention provides a matrix wiring circuit for a storage battery, which can use the matrix wiring method for storage batteries described in the above embodiments. Specifically, the wiring circuit includes:

[0073] A matrix power supply circuit includes n battery packs connected in parallel; each battery pack includes m batteries connected in series; where n and m are both natural numbers, where n is determined based on the cost of the batteries, and m is determined based on the output voltage and boost ratio of each battery pack.

[0074] The power management circuit is connected to the matrix power supply circuit, the charging circuit, and the load circuit. It is used to obtain information on the output voltage of the matrix power supply circuit, the input current of the charging circuit, and / or the power of each battery pack, and to control the operating mode of each battery pack based on the information. The operating modes include: charging mode, idle mode, discharging mode, and / or standby mode.

[0075] This invention provides a matrix wiring circuit for storage batteries. By considering the cost of the storage battery, the output voltage of the battery pack, and the boost ratio, the number of battery packs and the number of cells in each battery pack are determined, ensuring the power supply requirements of the storage battery. Furthermore, by connecting the cells of each battery pack in series and the battery packs in parallel, a matrix power circuit is formed, making each battery pack independent. Only the battery pack with the damaged cell needs to be disconnected and replaced, while the remaining battery packs do not need to be replaced, thus reducing the battery replacement cost. The battery management module monitors each battery pack, obtaining the output voltage of the matrix power circuit, the input current of the charging circuit, and / or information about the circuits of each battery pack, and controls the operating mode of each battery pack. This improves the safety and stability of battery use, allows for timely detection of battery damage, and solves the problem of high battery replacement costs in related technologies.

[0076] More preferably, the power management circuit includes: a power management module 1.

[0077] The input terminal of power management module 1 is connected to each battery pack in the matrix power circuit;

[0078] The output terminals of the battery management module are connected to the load circuit and the charging circuit;

[0079] The communication terminal of the battery management module is connected to the computing device to obtain at least the output voltage of the matrix power circuit, the charge of each battery pack, and the input current of the charging circuit.

[0080] like Figure 4 , Figure 5 , Figure 6As shown, taking a battery pack with 3 groups and 3 cells in each group as an example, the input terminals of the matching battery management module include: BAT1+, BAT1-, BAT2+, BAT2-, BAT3+, and BAT3-; connect the positive and negative terminals of the 1st, 2nd, and 3rd battery groups to the corresponding input terminals respectively.

[0081] The communication terminals (485+, 485-) of the battery management module are connected to a computing device via a 485 communication cable, preferably a computer.

[0082] The output terminals of the battery management module include: OUT+ and OUT-.

[0083] More preferably, the charging circuit includes: an AC / DC charger;

[0084] The input terminals of the AC / DC charger are connected to the mains power, and the output terminals of the AC / DC charger are connected to the load circuit and the battery management module to enable communication between the PLC control module and LLC control module inside the AC / DC charger and the battery management module.

[0085] More preferably, n is 2, 3 or 4; m is 2, 3 or 4.

[0086] It should be noted that the term "comprising" and its variations used in the embodiments of this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The modifications of "one" and "a plurality" mentioned in the embodiments of this invention are illustrative and not restrictive, and those skilled in the art should understand that unless explicitly indicated otherwise in the context, they should be understood as "one or more".

[0087] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of this invention are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0088] The steps described in the method embodiments provided by the present invention can be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of protection of the present invention is not limited in this respect.

[0089] The term "embodiment" in this specification refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily imply the same embodiment, nor does it imply independence or alternativeity from other embodiments. The various embodiments in this specification are described in a related manner, with reference to each other for similar or identical parts. In particular, for apparatus, device, and system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, and relevant details are referred to in the description of the method embodiments.

[0090] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A matrix wiring method for storage batteries, characterized in that, It includes the following steps: Divide the storage battery into n battery groups, and allocate m batteries to each of the battery groups. Here, both n and m are natural numbers. n is determined according to the cost of the storage battery, and m is determined according to the output voltage of each battery group and the boost ratio; Connect each battery in each of the battery groups in series with each other, and connect the battery groups in parallel with each other to obtain a matrix power supply circuit; Connect the battery management module to the matrix power supply circuit; wherein, the battery management module is connected to the charging circuit and the load circuit; Obtain the output voltage of the matrix power supply circuit, the input current of the charging circuit and / or the information of the power of each battery group through the battery management module, and control the working modes of each battery group based on the information; wherein, the working modes include: charging mode, standby mode, discharging mode and / or standby mode.

2. The matrix wiring method for storage batteries according to claim 1, characterized in that, Divide the storage battery into n battery groups, and allocate m batteries to each of the battery groups. Here, both n and m are natural numbers. n is determined according to the cost of the storage battery, and m is determined according to the output voltage of each battery group and the boost ratio, including: Based on the cost of the storage battery, determine the number of battery groups n, and divide the storage battery into n battery groups; According to the setting condition that the maximum value of the input voltage of each battery group is less than the minimum value of the output voltage and the boost ratio is less than 4, determine the number of batteries m in each battery group, and allocate m batteries to each of the battery groups.

3. The matrix wiring method for storage batteries according to claim 1, characterized in that, Connect the battery management module to the matrix power supply circuit. Here, the battery management module is connected to the charging circuit and the load circuit, including: Connect the matrix power supply circuit to the input terminal of the battery management module; connect the output terminal of the battery management module to the load circuit and the charging circuit; Connect the communication terminal of the battery management module to a computing device to obtain the output voltage of the matrix power supply circuit, the power of each battery group and / or the input current of the charging circuit.

4. The matrix wiring method for storage batteries according to claim 1, characterized in that, Control the working modes of each battery group based on the information, including: When the input current of the charging circuit is 0, compare the output voltage of the matrix battery circuit with x voltage thresholds; where x is equal to m - 1, and the x voltage thresholds are sequentially recorded from large to small as: the x-threshold, the (x - 1)-threshold,..., the i-threshold,..., the 1-threshold, 0 < i < x; the voltage thresholds are determined according to the number of battery groups m, the working voltage of the load circuit and the energy efficiency; If the output voltage is greater than the x-threshold, switch m battery groups to the discharging mode through the battery management module; If the output voltage is greater than the i-threshold and less than the (i + 1)-threshold, switch (i + 1) battery groups to the discharging mode and (m - i - 1) battery groups to the standby mode through the battery management module; If the output voltage is less than the 1-threshold, switch 1 battery group to the discharging mode and (m - 1) battery groups to the standby mode.

5. The matrix wiring method for storage batteries according to claim 4, characterized in that, The battery management module switches (i+1) battery packs to discharge mode and (mi-1) battery packs to standby mode, including: The battery management module records the number of discharges for each battery pack; each time a battery pack enters a discharge mode, it is counted as one discharge. The battery management module selects (i+1) battery packs from the m battery packs in ascending order of the number of discharges, switches the (i+1) battery packs to discharge mode, and switches the remaining (mi-1) battery packs to standby mode.

6. The matrix wiring method for storage batteries according to claim 4, characterized in that, Controlling the operating mode of each battery pack based on the information includes: When the output voltage of the battery pack is lower than the first set value, the battery management module switches the battery pack to charging mode. When the battery pack voltage is charged to the second set value, charging stops, and the battery pack is switched to a static mode via the battery management module.

7. A matrix-type wiring circuit for storage batteries, characterized in that, include: A matrix power supply circuit includes n battery packs connected in parallel; each battery pack includes m batteries connected in series; where n and m are both natural numbers, n is determined based on the cost of the batteries, and m is determined based on the output voltage and boost ratio of each battery pack. A power management circuit, connected to the matrix power supply circuit, charging circuit, and load circuit, is used to acquire information on the output voltage of the matrix power supply circuit, the input current of the charging circuit, and / or the charge level of each battery pack, and to control the operating mode of each battery pack based on the information; wherein the operating mode includes: charging mode, idle mode, discharging mode, and / or standby mode.

8. The matrix wiring circuit for storage batteries according to claim 7, characterized in that, The power management circuit includes: a power management module; The input terminal of the power management module is connected to each of the battery packs in the matrix power circuit; The output terminals of the battery management module are connected to the load circuit and the charging circuit; The communication terminal of the battery management module is connected to a computing device to obtain the output voltage of the matrix power circuit, the power of each battery pack, and / or the input current of the charging circuit.

9. The matrix wiring circuit for storage batteries according to claim 8, characterized in that, The charging circuit includes: an AC / DC charger; The input terminal of the AC / DC charger is connected to the mains power, and the output terminal of the AC / DC charger is connected to the load circuit and the battery management module to communicate with the PFC control module and LLC control module inside the AC / DC charger.

10. The matrix wiring circuit for a storage battery according to claim 7, characterized in that, n is 2, 3, or 4; m is 2, 3, or 4.

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