A charging and discharging test device for energy storage equipment

Abstract

The application discloses a kind of energy storage equipment charge-discharge test devices. Energy storage equipment charge-discharge test device can be realized using mutually coordinated connection of current collection box to realize and multiple energy storage equipment respectively connected, simultaneously for the battery in multiple energy storage equipment is carried out charge-discharge test;First clamping part and second clamping part are set to the two sides of the shell box body of each current collection box, and multiple shell box bodies can be realized mutual clamping fixation, and the copper bar in the internal current collection is matched along the arrangement direction of shell box body, and the number of current collection box can be configured based on the number of converter, the volume and weight of single current collection box are reduced, modular splicing can be realized, assembly and replacement operation are facilitated, assembly efficiency is improved, energy storage equipment charge-discharge test device is connected with multiple energy storage equipment to realize synchronous function test, to improve energy storage equipment charge-discharge test efficiency.

Description

Technical Field

[0001] This application relates to the field of energy storage cabinet testing technology, and in particular to a charging and discharging testing device for energy storage equipment. Background Technology

[0002] Current energy storage cabinet testing standards include safety performance testing, performance testing, and environmental adaptability testing. Performance testing includes charge / discharge efficiency and capacity retention. Charge / discharge efficiency, under rated charge / discharge conditions, should be no less than 90%. For example, at a 0.5C charge / discharge rate, the average charge / discharge efficiency across multiple tests must meet this standard. Capacity retention, after 500 charge / discharge cycles, should result in the energy storage cabinet's actual capacity being no less than 80% of its initial capacity to ensure long-term performance stability.

[0003] After assembly, energy storage devices require functional testing, necessitating a charge / discharge testing device. Currently, these devices use terminal blocks to connect to the energy storage device's converter. However, these terminal blocks are inconvenient for production, installation, and maintenance, and also hinder modular assembly. For terminals connecting numerous converters, multiple busbars are required, increasing terminal block size and weight, further complicating production and assembly, and limiting the efficiency of charge / discharge testing. Utility Model Content

[0004] Based on this, it is necessary to provide a charging and discharging test device for energy storage equipment to address the above-mentioned technical problems. This device solves the technical problem that current charging and discharging test devices for energy storage equipment use terminals to achieve electrical connection with the converter of the energy storage equipment. Terminals are not conducive to production, installation and maintenance, and cannot achieve modular splicing, resulting in low assembly efficiency and failing to improve the charging and discharging test efficiency of energy storage equipment.

[0005] On one hand, a charging and discharging test device for an energy storage device is provided. The energy storage device includes multiple batteries, and the charging and discharging test device is used to perform charging and discharging tests on the batteries in the energy storage device. The charging and discharging test device for an energy storage device includes an AC / DC switching power supply, a loop control switch, multiple power supply detection devices, multiple combiner boxes, and multiple sliding rheostats. The combiner boxes can be connected to the energy storage device to be charged and discharged.

[0006] The combiner box includes an outer casing. The two ends of the outer casing are provided with a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​parts and the second snap-fit ​​parts of two adjacent outer casings can be snapped together and fixed. The outer casing contains multiple busbars and multiple parallel busbars. The bottom end of the parallel busbar is connected to the busbar in a one-to-one correspondence. The parallel busbars in two interconnected outer casings are connected in a cooperative manner.

[0007] The circuit control switch includes a charging circuit control switch and a discharging circuit control switch; the AC / DC switching power supply forms a charging circuit through the charging circuit control switch, a power supply detection device, and a combiner box; the battery forms a discharging circuit through a combiner box, a power supply detection device, the discharging circuit control switch, and a sliding rheostat.

[0008] In one embodiment, the power supply detection device in each charging circuit has a power-off voltage that matches the rated voltage of the battery connected to the combiner box; the power supply detection device includes a battery voltage detector connected in parallel with any battery to detect the real-time voltage of the battery; the battery voltage detector is connected to the charging circuit control switch and the discharging circuit control switch.

[0009] In one embodiment, the loop control switch includes a switch controller connected to the battery voltage detector, the charging loop control switch, and the discharging loop control switch.

[0010] In one embodiment, the busbar box further includes a copper busbar routing box, which is disposed within the outer casing. The copper busbar routing box has connecting holes at both ends. The busbar routing box contains the busbar and the parallel busbar. Multiple busbars are spaced apart along the length of the busbar routing box. The bottom end of each parallel busbar is connected to a corresponding busbar, and the top end of each parallel busbar extends beyond the busbar routing box. When two adjacent outer casings are interlocked, the busbar routing boxes are connected along the arrangement direction of the outer casings, and adjacent connecting holes are aligned to form channels for the busbars to cooperate.

[0011] In one embodiment, the outer casing includes a base plate, a top cover plate, a front sealing plate, a rear sealing plate, a left sealing plate, and a right sealing plate. The copper busbar wiring box is disposed on the base plate, and the top cover plate is provided with a mounting cover plate corresponding to the copper busbar wiring box. The mounting cover plate has a top opening, through which the parallel copper busbar extends beyond the copper busbar wiring box. The left sealing plate and the right sealing plate are respectively disposed at the two ends of the copper busbar wiring box. The connecting hole includes a first connecting hole and a second connecting hole. The left sealing plate is provided with the first connecting hole at the end of the copper busbar wiring box, and the right sealing plate is provided with the second connecting hole at the end of the copper busbar wiring box. When the first and second snap-fit ​​parts of two adjacent outer casings can be snapped together and fixed, the first connecting hole and the second connecting hole are sealed and connected.

[0012] In one embodiment, the busbar includes a first busbar, a second busbar, and a third busbar arranged parallel to each other, the first busbar, the second busbar, and the third busbar being mounted on the base plate by insulating fasteners; the parallel busbar includes a first parallel busbar, a second parallel busbar, and a third parallel busbar arranged parallel to each other, the first parallel busbar being vertically connected to the first busbar, the second parallel busbar being vertically connected to the second busbar, and the third parallel busbar being vertically connected to the third busbar; the AC / DC switching power supply has a positive charging terminal and a negative charging terminal, and the busbar... The box has a first bus and a second bus; the positive terminal of the charging terminal is connected to the first bus through the power supply detection device, and the first bus is connected to the positive terminal of the battery; the negative terminal of the charging terminal is connected to the second bus through the charging circuit control switch of the circuit control switch, and the second bus is connected to the negative terminal of the battery; the second bus is connected to the sliding rheostat through the discharging circuit control switch of the circuit control switch, and the sliding rheostat is connected to the first bus through the power supply detection device; the third bus is connected to the ground terminal of the battery.

[0013] In one embodiment, the left sealing plate is provided with the first snap-fit ​​portion, and the right sealing plate is provided with the second snap-fit ​​portion. The first snap-fit ​​portion or the second snap-fit ​​portion includes at least one U-shaped slot or at least one snap-fit ​​protrusion.

[0014] In one embodiment, the front sealing plate and / or the rear sealing plate are provided with a plurality of air outlets, and the air outlets are provided with sealing covers.

[0015] In one embodiment, the power supply detection device includes a circuit continuity controller, which has a positive input terminal, a positive output terminal, a positive detection terminal, and a negative detection terminal. The positive terminal of the charging terminal is connected to the positive input terminal, which is connected to the positive output terminal via the circuit continuity controller. The positive output terminal is connected to the positive terminal of the battery, the positive detection terminal is connected to the positive terminal of the battery, and the negative detection terminal is connected to the negative terminal of the battery. A battery voltage detector is connected to the positive and negative detection terminals and is used to monitor the battery voltage between the positive and negative terminals in real time. The power supply detection device also includes a positive and a negative voltage supply terminal. The power supply detection device includes a power supply detection device, with the positive and negative voltage supply terminals connected to it, and the power supply detection device is electrically connected to the circuit continuity controller.

[0016] In one embodiment, the power supply detection device further includes a power charger and a power supply terminal block; the power charger is connected to the positive and negative power supply terminals through the power supply terminal block, the power charger is connected to the mains power and converts the mains power into a first power supply voltage, the first power supply voltage is input to the positive and negative power supply terminals and then output to the power supply detection device.

[0017] The aforementioned energy storage device charge / discharge testing device can connect to multiple energy storage devices using interconnected combiner boxes, and simultaneously perform charge / discharge tests on the batteries in multiple energy storage devices. Each combiner box has a first and a second latching part on both sides of its outer casing, allowing multiple outer casings to be interlocked and fixed. The internal busbars are connected along the arrangement direction of the outer casings, enabling the combination of the internal busbars. The number of combiner boxes can be configured based on the number of inverters, reducing the volume and weight of a single combiner box. Modular assembly facilitates assembly and replacement, improving assembly efficiency. This allows the energy storage device to be easily connected to multiple energy storage devices for simultaneous functional testing, thereby improving the efficiency of energy storage device charge / discharge testing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a charge / discharge test device for an energy storage device in one embodiment;

[0020] Figure 2 This is a partial structural schematic diagram of the energy storage device charge / discharge test apparatus in one embodiment;

[0021] Figure 3 This is a schematic diagram of the connection structure of three combiner boxes in one embodiment;

[0022] Figure 4 This is a schematic diagram of the overall structure of a junction box in one embodiment;

[0023] Figure 5 An exploded view of the combiner box in one embodiment;

[0024] Figure 6 This is a first-view structural schematic diagram of a copper busbar wiring box in one embodiment.

[0025] The markings in the diagram are as follows:

[0026] Energy storage device charge / discharge test device 100, AC / DC switching power supply 10, charging positive terminal 101, charging negative terminal 102, power supply detection device 20, circuit continuity controller 201, positive terminal input 211, positive terminal output 212, positive terminal detection 213, negative terminal detection 214, voltage supply positive terminal 215, voltage supply negative terminal 216, power supply charger 202, power supply terminal block 203, battery voltage detector 204, combiner box 30, outer casing 1, bottom plate 12, top cover 13, top opening 131, mounting cover 132, front sealing plate 14. Rear sealing plate 15. Left sealing plate 16. First connecting hole 161. Right sealing plate 17. Second connecting hole 171. Sealing cover 18. Copper busbar junction box 2. Busbar 21. First busbar 211. Second busbar 212. Third busbar 213. Parallel busbar 22. First parallel busbar 221. Second parallel busbar 222. Third parallel busbar 223. Insulating fastener 23. First snap-fit ​​part 3. Second snap-fit ​​part 4. Circuit control switch 40. Charging circuit control switch 41. Discharging circuit control switch 42. Sliding rheostat 50. Energy storage device 200. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] This utility model embodiment creatively proposes an energy storage device charge and discharge test device 100 for performing functional tests on an energy storage device 200. The energy storage device 200 includes multiple batteries, and the energy storage device charge and discharge test device is used to perform charge and discharge tests on the batteries in the energy storage device 200.

[0029] like Figure 1 , Figure 2 As shown, the energy storage device charge / discharge test apparatus 100 comprises an AC / DC switching power supply 10, multiple power supply detection devices 20, multiple combiner boxes 30, a loop control switch 40, and multiple sliding rheostats 50, and is used to perform charge / discharge tests on the batteries in the energy storage device 200. The combiner boxes 30 can be connected to the energy storage device 200 to be charged / discharged.

[0030] like Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the combiner box 30 includes an outer casing 1. The two ends of the outer casing 1 are provided with a first snap-fit ​​part 3 and a second snap-fit ​​part 4. The first snap-fit ​​part 3 and the second snap-fit ​​part 4 of two adjacent outer casings 1 can be snapped together and fixed. The outer casing 1 is provided with a plurality of busbars 21 and a plurality of parallel busbars 22. The bottom end of the parallel busbars 22 is connected to the busbars 21 in a one-to-one correspondence. The parallel busbars 22 in two interconnected outer casings 1 are connected in cooperation.

[0031] The circuit control switch 40 includes a charging circuit control switch 41 and a discharging circuit control switch 42; the AC / DC switching power supply 10 forms a charging circuit with a power supply detection device 20 and a combiner box 30 through the charging circuit control switch 41; the energy storage device 200 forms a discharging circuit with a combiner box 30, a power supply detection device 20, a discharging circuit control switch 42 and a sliding rheostat 50.

[0032] The power supply detection device 20 in each charging circuit has a de-energization voltage that matches the rated voltage of the energy storage device 200 connected to the combiner box 30. The output voltage and current of the AC / DC switching power supply 10 match the energy storage device 200. The output voltage range of the AC / DC switching power supply is 1-100V. AC / DC (alternating current / direct current) refers to a power supply with AC input and DC output, belonging to a type of switching power supply. The resistance value of the sliding rheostat 50 matches the corresponding connected energy storage device 200.

[0033] The power supply detection device 20 includes a battery voltage detector 204, which is connected in parallel with each energy storage device 200 to detect the real-time voltage of the battery. The battery voltage detector 204 is connected to a charging circuit control switch 41 and a discharging circuit control switch 42. The charging circuit control switch 41 can automatically open when the real-time voltage of the energy storage device 200 reaches a preset power-off voltage threshold, and the discharging circuit control switch 42 can automatically close when the real-time voltage of the energy storage device 200 reaches the preset power-off voltage threshold. When the charging circuit control switch 41 is closed, the AC / DC switching power supply 10 starts charging the energy storage device 200 until the real-time voltage of the energy storage device 200 reaches the preset power-off voltage threshold, at which point the charging circuit is disconnected. When the real-time voltage of the energy storage device 200 reaches the preset power-off voltage threshold, the discharging circuit control switch 42 is closed to start discharging the energy storage device 200. This embodiment can automatically disconnect the power when the battery voltage value after charging reaches the preset power-off voltage threshold, and simultaneously discharge the charged battery.

[0034] The circuit control switch 40 includes a switch controller, which is connected to the battery voltage detector 204, the charging circuit control switch 41, and the discharging circuit control switch 42. The switch controller has a charging mode button and a discharging mode button. The charging mode button is set to the charging circuit control switch 41, and the discharging mode button is set to the discharging circuit control switch 42.

[0035] When the charging mode button is pressed, the switch controller controls the charging circuit control switch 41 to close and the discharging circuit control switch 42 to open. The switch controller obtains the real-time voltage of any battery through the battery voltage detector 204 and controls the state of the corresponding power supply detection device according to the real-time voltage of any battery. When the real-time voltage on the combiner box 30 (i.e., the real-time voltage of the energy storage device 200) is less than the power-off voltage of the power supply detection device 20, the power supply detection device 20 is in a closed circuit state. When the real-time voltage on the combiner box 30 is greater than or equal to the power-off voltage of the power supply detection device 20, the power supply detection device 20 is in an open circuit state.

[0036] When the discharge mode button is pressed, the switch controller controls the charging circuit control switch 41 to open and controls the discharge circuit control switch 42 to close.

[0037] like Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the busbar junction box 30 also includes a copper busbar routing box 2, which is located inside the outer casing 1. The two ends of the copper busbar routing box 2 are provided with connecting holes. The copper busbar routing box 2 is provided with busbar copper bus 21 and parallel busbar copper bus 22. Multiple busbar copper bus 21 are spaced apart along the length of the copper busbar routing box 2. The bottom end of the parallel busbar copper bus 22 is connected to the busbar copper bus 21 one by one. The top end of the parallel busbar copper bus 22 extends out of the copper busbar routing box 2. When two adjacent outer casings 1 are snapped together, the copper busbar routing boxes 2 are connected along the arrangement direction of the outer casings 1, and two adjacent connecting holes are connected to each other to form a channel for the busbar copper bus 21 to cooperate.

[0038] By placing the copper busbar wiring box 2 inside the outer casing 1, safety and dustproof performance are improved. Sealing the copper busbar wiring box 2 within the outer casing 1 achieves an IP55 protection rating. Furthermore, the outer casing 1 has a first latching part 3 and a second latching part 4 on both sides along the length of the copper busbar wiring box 2, allowing multiple outer casings 1 to be interlocked and fixed. One busbar box 30 corresponds to one converter. Busbar boxes 30 can be used individually or connected in rows. Connecting the copper busbar wiring boxes 2 along the arrangement direction of the outer casing 1 allows the busbars 21 inside the copper busbar wiring boxes 2 to cooperate. The busbars 21 of adjacent outer casings 1 are interconnected in the channel via adapter busbars. This allows for the configuration of the number of busbar boxes 30 based on the number of converters, reducing the size and weight of a single busbar box 30 and facilitating assembly and replacement.

[0039] Please see Figure 5 The outer casing 1 includes a base plate 12, an upper cover plate 13, a front sealing plate 14, a rear sealing plate 15, a left sealing plate 16, and a right sealing plate 17. A copper busbar wiring box 2 is provided on the base plate 12. The upper cover plate 13 is provided with a mounting cover plate 132 corresponding to the copper busbar wiring box 2. The mounting cover plate 132 is provided with a top opening 131 through which the parallel copper busbar 22 extends to the outside of the copper busbar wiring box 2. The left sealing plate 16 and the right sealing plate 17 are respectively provided at the two ends of the copper busbar wiring box 2.

[0040] Understandably, the connecting holes include a first connecting hole 161 and a second connecting hole 171. The left sealing plate 16 is provided with the first connecting hole 161 at the end of the copper busbar wiring box 2, and the right sealing plate 17 is provided with the second connecting hole 171 at the end of the copper busbar wiring box 2. When the first snap-fit ​​part 3 and the second snap-fit ​​part 4 of two adjacent outer casings 1 can be snapped together and fixed, the first connecting hole 161 and the second connecting hole 171 are sealed and connected.

[0041] Please see Figure 4 and Figure 5 The left sealing plate 16 is provided with a first engaging portion 3, and the right sealing plate 17 is provided with a second engaging portion 4. The first engaging portion 3 or the second engaging portion 4 includes at least one U-shaped slot 31 or at least one engaging protrusion 41. Preferably, the first engaging portion 3 includes two U-shaped slots 31, and the second engaging portion 4 includes two engaging protrusions 41, which engage with the U-shaped slots 31. More preferably, the first engaging portion 3 can be connected to the left sealing plate 16, or it can be integrally extended and bent from the front sealing plate 14 or the rear sealing plate 15. The second engaging portion 4 can be connected to the right sealing plate 17, or it can be integrally extended and bent from the front sealing plate 14 or the rear sealing plate 15.

[0042] Please see Figure 5 The front sealing plate 14 and / or the rear sealing plate 15 are provided with multiple air outlets, and the air outlets are provided with sealing covers 18.

[0043] Please see Figure 5 and Figure 6 The busbar 21 includes a first busbar 211, a second busbar 212, and a third busbar 213 arranged in parallel with each other. The first busbar 211, the second busbar 212, and the third busbar 213 are mounted on the base plate 12 via insulating fasteners 23. The parallel busbar 22 includes a first parallel busbar 221, a second parallel busbar 222, and a third parallel busbar 223 arranged in parallel with each other. The first parallel busbar 221 is vertically connected to the first busbar 211, the second parallel busbar 222 is vertically connected to the second busbar 212, and the third parallel busbar 223 is vertically connected to the third busbar 213. The busbar 21, including the first busbar 211, the second busbar 212, and the third busbar 213 arranged in parallel with each other, allows one converter to be connected to one busbar box 30. The busbar box 30 adopts a welded integral structure and meets the IP55 protection level. Meanwhile, a three-phase busbar 21 is reserved. When multiple converters are connected in parallel, the two busbars 30 can be connected by the adapter busbar to realize the busbar routing of two or more converters.

[0044] Specifically, such as Figure 1 , Figure 2 As shown, the AC / DC switching power supply 10 has a positive charging terminal 101 and a negative charging terminal 102. The combiner box 30 has a first busbar 211 and a second busbar 212. The positive charging terminal 101 is connected to the first busbar 211 through the power supply detection device 20, and the first busbar 211 is connected to the positive terminal of the energy storage device 200. The negative charging terminal 102 is connected to the second busbar 212 through the charging circuit control switch 41 of the circuit control switch 40, and the second busbar 212 is connected to the negative terminal of the energy storage device 200. The second busbar 212 is connected to the sliding rheostat 50 through the discharging circuit control switch 42 of the circuit control switch 40, and the sliding rheostat 50 is connected to the first busbar 211 through the power supply detection device 20. The third busbar 213 is connected to the ground terminal of the battery.

[0045] like Figure 1 , Figure 2As shown, the power supply detection device 20 includes a circuit on / off controller 201. The circuit on / off controller 201 has a positive terminal input 211, a positive terminal output 212, a positive detection terminal 213, and a negative detection terminal 214. The charging terminal positive terminal 101 is connected to the positive terminal input 211, which is connected to the positive terminal output 212 via the circuit on / off controller 201. The positive terminal output 212 is connected to the positive terminal of the energy storage device 200. The positive detection terminal 213 is connected to the positive terminal of the energy storage device 200, and the negative detection terminal 214 is connected to the negative terminal of the energy storage device 200. A battery voltage detector 204 is connected to both the positive and negative detection terminals. The battery voltage detector 204 is used to monitor the battery voltage between the positive and negative terminals in real time.

[0046] like Figure 2 As shown, the power supply detection device 20 is further provided with a positive voltage supply terminal 215 and a negative voltage supply terminal 216; the power supply detection device 20 includes a power supply detection device, the positive voltage supply terminal 215 and the negative voltage supply terminal 216 are connected to the power supply detection device, and the power supply detection device is electrically connected to the circuit on / off controller 201.

[0047] like Figure 1 , Figure 2 As shown, the power supply detection device 20 also includes a power supply charger 202 and a power supply terminal 203. The power supply charger 202 is connected to the positive power supply terminal 215 and the negative power supply terminal 216 through the power supply terminal 203. The power supply charger 202 is connected to the mains power and converts the mains power into a first power supply voltage. The first power supply voltage is input to the positive power supply terminal 215 and the negative power supply terminal 216 and then output to the power supply detection device.

[0048] The aforementioned energy storage device charge / discharge testing device can connect to multiple energy storage devices using interconnected combiner boxes, and simultaneously perform charge / discharge tests on the batteries in multiple energy storage devices. Each combiner box has a first and a second latching part on both sides of its outer casing, allowing multiple outer casings to be interlocked and fixed. The internal busbars are connected along the arrangement direction of the outer casings, enabling the combination of the internal busbars. The number of combiner boxes can be configured based on the number of inverters, reducing the volume and weight of a single combiner box. Modular assembly facilitates assembly and replacement, improving assembly efficiency. This allows the energy storage device to be easily connected to multiple energy storage devices for simultaneous functional testing, thereby improving the efficiency of energy storage device charge / discharge testing.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A charging and discharging testing device for energy storage equipment, characterized in that, The energy storage device includes multiple batteries, and the energy storage device charge and discharge test device is used to perform charge and discharge tests on the batteries in the energy storage device. The energy storage device charge and discharge test device includes an AC / DC switching power supply, a loop control switch, multiple power supply detection devices, multiple combiner boxes, and multiple sliding rheostats. The combiner boxes can be connected to the energy storage device to be charged and discharged. The combiner box includes an outer casing. The two ends of the outer casing are provided with a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​parts and the second snap-fit ​​parts of two adjacent outer casings can be snapped together and fixed. The outer casing contains multiple busbars and multiple parallel busbars. The bottom end of the parallel busbar is connected to the busbar in a one-to-one correspondence. The parallel busbars in two interconnected outer casings are connected in a cooperative manner. The circuit control switch includes a charging circuit control switch and a discharging circuit control switch; The AC / DC switching power supply forms a charging circuit with a power supply detection device and a combiner box through the charging circuit control switch. The battery forms a discharge circuit through a junction box, a power supply detection device, a discharge circuit control switch, and a sliding rheostat.

2. The energy storage device charge / discharge testing apparatus according to claim 1, characterized in that, The power supply detection device includes a battery voltage detector, which is connected in parallel with any battery to detect the real-time voltage of the battery; the battery voltage detector is connected to the charging circuit control switch and the discharging circuit control switch.

3. The energy storage device charge / discharge testing apparatus according to claim 2, characterized in that, The circuit control switch includes a switch controller, which is connected to the battery voltage detector, the charging circuit control switch, and the discharging circuit control switch.

4. The energy storage device charge / discharge testing apparatus according to claim 1, characterized in that, The busbar junction box also includes a copper busbar routing box, which is located inside the outer casing. The copper busbar routing box has connecting holes at both ends. The busbar routing box contains the busbar and the parallel busbar. Multiple busbars are spaced apart along the length of the busbar routing box. The bottom of the parallel busbar is connected to each busbar, and the top of the parallel busbar extends beyond the busbar routing box. When two adjacent outer casings are interlocked, the busbar routing boxes are connected along the arrangement direction of the outer casings, and adjacent connecting holes align to form channels for the busbars to cooperate.

5. The energy storage device charge / discharge testing apparatus according to claim 4, characterized in that, The outer casing includes a base plate, a top cover plate, a front sealing plate, a rear sealing plate, a left sealing plate, and a right sealing plate. The copper busbar wiring box is disposed on the base plate. The top cover plate is provided with a mounting cover plate corresponding to the copper busbar wiring box. The mounting cover plate has a top opening. The parallel copper busbar extends through the top opening to the outside of the copper busbar wiring box. The left sealing plate and the right sealing plate are respectively disposed at the two ends of the copper busbar wiring box. The connecting hole includes a first connecting hole and a second connecting hole. The left sealing plate is provided with the first connecting hole at the end of the copper busbar wiring box, and the right sealing plate is provided with the second connecting hole at the end of the copper busbar wiring box. When the first and second snap-fit ​​parts of two adjacent outer casings can be snapped together and fixed, the first connecting hole and the second connecting hole are sealed and connected.

6. The energy storage device charge / discharge testing apparatus according to claim 5, characterized in that, The busbar includes a first busbar, a second busbar, and a third busbar arranged in parallel with each other. The first busbar, the second busbar, and the third busbar are mounted on the base plate by insulating fasteners. The parallel busbar includes a first parallel busbar, a second parallel busbar, and a third parallel busbar arranged in parallel with each other. The first parallel busbar is perpendicularly connected to the first busbar, the second parallel busbar is perpendicularly connected to the second busbar, and the third parallel busbar is perpendicularly connected to the third busbar. The AC / DC switching power supply has a positive charging terminal and a negative charging terminal. The positive charging terminal is connected to the first busbar through the power supply detection device, and the first busbar is connected to the positive terminal of the battery. The negative charging terminal is connected to the second busbar through the charging circuit control switch of the circuit control switch, and the second busbar is connected to the negative terminal of the battery. The second busbar is connected to the sliding rheostat through the discharging circuit control switch of the circuit control switch, and the sliding rheostat is connected to the first busbar through the power supply detection device. The third busbar is connected to the ground terminal of the battery.

7. The energy storage device charge / discharge testing apparatus according to claim 6, characterized in that, The left sealing plate is provided with the first snap-fit ​​portion, and the right sealing plate is provided with the second snap-fit ​​portion. The first snap-fit ​​portion or the second snap-fit ​​portion includes at least one U-shaped slot or at least one snap-fit ​​protrusion.

8. The energy storage device charge / discharge testing apparatus according to claim 6, characterized in that, The front sealing plate and / or the rear sealing plate are provided with multiple air outlets, and the air outlets are provided with sealing covers.

9. The energy storage device charge / discharge testing apparatus according to claim 3, characterized in that, The power supply detection device includes a circuit continuity controller, which has a positive input terminal, a positive output terminal, a positive detection terminal, and a negative detection terminal. The positive terminal of the charging terminal is connected to the positive input terminal, which is connected to the positive output terminal through the circuit continuity controller. The positive output terminal is connected to the positive terminal of the battery. The positive detection terminal is connected to the positive terminal of the battery, and the negative detection terminal is connected to the negative terminal of the battery. A battery voltage detector is connected to the positive and negative detection terminals and is used to monitor the battery voltage between the positive and negative terminals in real time. The power supply detection device also has a voltage supply positive terminal and a voltage supply negative terminal. The power supply detection device includes a power supply detection device, and the voltage supply positive and negative terminals are connected to the power supply detection device, which is electrically connected to the circuit continuity controller.

10. The energy storage device charge / discharge testing apparatus according to claim 9, characterized in that, The power supply detection device further includes a power charger and a power supply terminal block; the power charger is connected to the positive and negative power supply terminals through the power supply terminal block, the power charger is connected to the mains power and converts the mains power into a first power supply voltage, the first power supply voltage is input to the positive and negative power supply terminals and then output to the power supply detection device.

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