Charging and discharging device and system for battery

Abstract

The utility model relates to the technical field of battery processing and manufacturing, in particular to charging and discharging equipment and system for a battery, and the charging equipment comprises a rack assembly and a partition plate mechanism arranged on the rack assembly; the power supply module is connected to the rack assembly; wherein a battery can also be arranged on the rack assembly; the power module is located on a first side of the separator mechanism. The battery is located on a second side of the separator mechanism. At least one opening capable of being opened or closed is formed in the partition plate mechanism, and at least part of the power module is arranged to be capable of moving from the first side to the second side when the opening is opened. The power module and the battery are arranged on the two sides of the partition plate mechanism respectively, heat isolation of the power module and the battery is achieved, and the battery is prevented from being subjected to heat interference. And the opening capable of being opened or closed is formed in the partition plate mechanism, so that access, installation, replacement or maintenance of the power module become more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing and manufacturing, and in particular to a charging and discharging device and system for a battery. Background Art

[0002] In the field of battery testing or storage, the capacity and electrochemical performance of the battery will be affected by its operating temperature. Too high or too low an operating temperature will lead to a decrease in battery performance. During storage or testing, it is necessary to control the consistency of the operating temperature to improve the reliability and stability of testing or storage.

[0003] In existing charging and discharging equipment, the battery and the power module are usually in the same cavity; however, the power module usually generates a high amount of heat, which can easily have a negative impact on the operating temperature of the battery, making it impossible to maintain the temperature of the battery within a relatively constant temperature range, resulting in a decrease in the electrochemical performance or capacity of the battery. Utility Model Content

[0004] The present application provides a charging and discharging device and system for a battery, aiming to solve the technical problems existing in the above traditional methods.

[0005] According to one aspect of the present application, a charging and discharging device for a battery is provided, comprising: a rack assembly and a partition mechanism arranged on the rack assembly; a power module connected to the rack assembly; wherein a battery may also be arranged on the rack assembly; the power module is located on a first side of the partition mechanism, and the battery is located on a second side of the partition mechanism; at least one opening that can be opened or closed is arranged on the partition mechanism, and at least a part of the power module is arranged to be able to move from the first side to the second side when the opening is opened.

[0006] In a further solution of the present application, the partition mechanism includes: a partition assembly provided with an opening; and an opening and closing structure movably connected to the partition assembly.

[0007] In a further solution of the present application, the partition assembly includes a partition and a frame connected to the partition; an opening is arranged on the partition, and an opening and closing structure is slidably connected to the frame to open or close the opening.

[0008] In a further solution of the present application, the opening and closing structure includes a cover plate and a fan arranged on the cover plate; the cover plate and the opening match each other to be able to open or close the opening, and the fan can transport the airflow from the second side to the first side in a unidirectional manner.

[0009] In a further solution of the present application, the power module includes a first conversion module and a second conversion module that can be plugged into the first conversion module; the first conversion module is connected to the rack assembly, and the second conversion module is configured to be able to move from the first side to the second side when the opening is opened.

[0010] In a further solution of the present application, the second conversion module is connected to the rack assembly.

[0011] In a further solution of the present application, the first conversion module includes a first connection terminal, the second conversion module includes a second connection terminal, and the second conversion module is plugged into and unplugged from the first connection terminal via the second connection terminal.

[0012] In a further solution of the present application, the tooling module also includes a guide structure; the guide structure is connected to the rack assembly to constrain the movement path of the second conversion module during the plugging and unplugging process.

[0013] In a further solution of the present application, a plurality of penetrating heat dissipation holes are provided on the guide structure.

[0014] In a further solution of the present application, a handle structure is further provided at one end of the second conversion module away from the first conversion module.

[0015] In a further embodiment of the present application, a charging and discharging system comprises: a charging and discharging device as described above; the charging and discharging device can accommodate a battery tray loaded with batteries, and the batteries are provided with electrodes at both ends perpendicular to the vertical direction; the charging and discharging device also comprises probes, and the probes can respectively clamp the corresponding electrodes.

[0016] In summary, the charging and discharging device provided by the present application has at least the following beneficial effects:

[0017] The charging and discharging equipment provided in the present application includes a partition mechanism and a power module. By respectively arranging the power module and the battery on both sides of the partition mechanism (i.e., the first side and the second side), thermal isolation between the power module and the battery is achieved, thereby effectively preventing the heat generated by the power module during operation from being directly transferred to the battery, avoiding thermal interference to the battery, and allowing the battery to be charged and discharged in a more stable and controllable environment.

[0018] The partition mechanism is provided with an opening that can be opened or closed, and the power module can be at least partially moved from the first side to the second side through the opening when needed. This makes it easier to access, install, replace or repair the power module, and improves overall flexibility; especially when the space on the first side is relatively limited, it avoids the difficulty of performing complex operations in a narrow space, and improves work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the structure of the charging and discharging device provided in an embodiment of the present application from a front perspective;

[0021] Figure 2 A schematic diagram of the structure of a single tooling module in a charging and discharging device provided in an embodiment of the present application from a front perspective;

[0022] Figure 3 A schematic diagram of the structure of a separator mechanism in a charging and discharging device provided in an embodiment of the present application from a top view;

[0023] Figure 4 Another structural schematic diagram of a single tooling module in a charging and discharging device provided in an embodiment of the present application from a front perspective;

[0024] Figure 5 A schematic diagram of a structure of a power module in a charging and discharging device provided in an embodiment of the present application in a separated state;

[0025] Figure 6 A schematic diagram of the structure of an exemplary second conversion module of the charging and discharging device provided in an embodiment of the present application;

[0026] Figure 7 Another structural schematic diagram of a power module in a separated state in a charging and discharging device provided in an embodiment of the present application; and

[0027] Figure 8 Provided in the embodiments of this application Figure 7 Enlarged schematic diagram of point C in the middle.

[0028] The reference numerals are as follows:

[0029] 100. Charging and discharging equipment;

[0030] 10. Shell;

[0031] 11. Cabinet unit;

[0032] 12. Accommodating cavity;

[0033] 20. Tooling module;

[0034] 21. Partition mechanism;

[0035] 211, partition assembly; 2111, partition; 2112, frame;

[0036] 212, opening and closing structure; 2121, cover plate; 2122, fan;

[0037] 22. Rack assembly;

[0038] 23. Guiding structure;

[0039] 231, guide plate;

[0040] 232, mounting plate;

[0041] 233, heat dissipation holes;

[0042] 30. Power module;

[0043] 31. First conversion module; 311. First connection terminal;

[0044] 32. second conversion module; 321. second connection terminal; 322. connection plate; 323. handle structure;

[0045] A. Opening; B. Screw hole. DETAILED DESCRIPTION

[0046] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0047] In addition, if there is a feature defined as "first" or "second", it is only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If there is a description of "plurality", the general meaning is to include at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and so on should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0050] like Figure 1 A schematic structural diagram of a charging and discharging device 100 is demonstrated. The charging and discharging device 100 can be loaded with batteries for battery storage and battery testing, such as battery formation and capacity division.

[0051] The charging and discharging device 100 includes a shell 10 and a tooling module 20; the shell 10 is an outer shell structure that supports, protects and fixes internal components, and its shape is not limited, and is exemplarily a rectangular box shape as shown in the figure; the shell 10 includes at least one cabinet unit 11, and each cabinet unit 11 is divided into a single accommodating cavity 12. The size and shape of the accommodating cavity 12 match the tooling module 20, so that each accommodating cavity 12 can accommodate a tooling module 20.

[0052] like Figure 2 The tooling module 20 includes a frame assembly 22 and a partition mechanism 21 disposed on the frame assembly 22 . Specifically, the frame assembly 22 is a rectangular frame as a whole, and the partition mechanism 21 is disposed in the frame assembly 22 .

[0053] In an optional embodiment of the utility model, the tooling module 20 can also be designed as a whole with the shell 10, that is, the tooling module 20 is integrated with the accommodating cavity 12 to improve the stability of the structure. At this time, the frame assembly 22 is directly integrated with the shell 10, and the partition mechanism 21 is arranged inside the accommodating cavity 12.

[0054] In a corresponding embodiment, the tooling module 20 may also be independently arranged relative to the accommodating cavity 12; if it is detachably accommodated in the accommodating cavity 12, its connection method may not be limited. The exemplary tooling module 20 is connected to the accommodating cavity 12 in a pluggable manner. When the tooling module 20 needs to be maintained or replaced, the staff can easily take it out without disassembling the entire charging and discharging device 100.

[0055] Each rack assembly 22 is also divided into a first rack 221 and a second rack 222 by the partition mechanism 21 in the vertical direction. As shown in the figure, the rack on the upper side of the partition mechanism 21 can be understood as the first rack 221, and the rack on the lower side of the partition mechanism 21 can be understood as the second rack 222. Of course, the first rack 221 and the second rack 222 can be provided integrally with the partition mechanism 21, or can be provided independently.

[0056] The charging and discharging device 100 further includes a power module 30, which is connected to the rack assembly 22. For the convenience of description, the partition mechanism 21 is used as a position reference, and the power module 30 is located on the first side of the partition mechanism 21, and the side away from the partition mechanism 21 is called the second side, wherein the second side is used to accommodate and install the battery. In short, when the power module 30 is arranged on the first rack 221, the battery is located on the second rack 222, and vice versa when the power module 30 is arranged on the second rack 222, the battery is located on the first rack 221.

[0057] It can be understood that the battery is the main body required for storage or detection mentioned above; the power module 30 refers to an electronic device responsible for converting an external power source (such as externally provided alternating current) into the direct current required by the internal components of the device, and can ensure a stable supply of voltage and current.

[0058] By arranging the power module 30 and the battery on both sides of the partition mechanism respectively, thermal isolation between the power module 30 and the battery is achieved, thereby effectively preventing the heat generated by the power module during operation from being directly transferred to the battery, avoiding thermal interference to the battery, and the battery can be charged and discharged in a more stable and controllable environment.

[0059] like Figure 3 Furthermore, an opening A that can be opened or closed is provided on the partition mechanism 21, and the opening A allows the power module 30 to be moved from the first side to the second side when needed. This makes it easier to access, install, replace or repair the power module 30, and improves overall flexibility; especially when the space on the first side is relatively limited. The difficulty of performing complex operations in a narrow space is avoided, and work efficiency and safety are improved.

[0060] As a preferred solution of an embodiment of the utility model, the power module 30 is arranged on the first rack 221 located on the upper side relative to the partition mechanism 21, and the battery is arranged on the second rack 222 on the lower side relative to the partition mechanism 21. Since the heat source (battery and power module 30) usually generates an upward airflow (that is, the principle of rising hot air flow), the component that generates higher heat (power module 30) is placed on the top, and the hot air flow generated by it will naturally rise, further protecting the battery from the direct influence of the power module 30 above.

[0061] like Figure 3A specific partition mechanism 21 is demonstrated, which includes a partition assembly 211 and an opening and closing structure 212.

[0062] Specifically, the partition assembly 211 is a plate-shaped structure, and the opening A is disposed at the partition assembly 211 .

[0063] Furthermore, the opening and closing structure 212 can be movably connected to the partition assembly 211, and can open or close the opening A.

[0064] Specifically, the movable connection may be at least one of a screw connection, a sliding connection, a magnetic connection, and a snap connection; when the power module 30 is removed, the opening A is opened by the opening and closing structure 212 , and otherwise, the opening A is closed.

[0065] As a preferred solution of the present invention, the opening and closing structure 212 is connected to the partition assembly 211 by sliding.

[0066] The staff can first slide the opening and closing structure 212 covering the opening A along one side to fully open the opening A, and then release the plug-in connection between the second conversion module 32 and the first conversion module 31, and move the second conversion module 32 to the second side through the opening A, and then remove it from the second side. Similarly, when the second conversion module 32 needs to be reconnected, the second conversion module 32 can be plugged upward from the second side through the opening A to the first conversion module 31.

[0067] In a specific embodiment, the partition assembly 211 includes a partition 2111 and a frame 2112 connected to the partition 2111; the opening A is set on the partition 2111, and the frame 2112 is used to support the partition 2111 to the shell 10, and the other can also provide a connection point, so that the opening and closing structure 212 is slidably connected to the frame 2112 to open or close the opening A.

[0068] It should be noted that other structures may be used to replace the frame 2112, such as providing a guide rail, a slide groove, etc. on the surface of the partition 2111. If only based on the general inventive concept of slidingly connecting the opening and closing structure 212 to the partition assembly 211, the matching structure of the sliding connection is improved, which still falls within the protection scope covered by the embodiments of the utility model.

[0069] In a further solution of the embodiment of the present invention, the opening and closing structure 212 includes a cover plate 2121 and a fan 2122. The shape and size of the cover plate 2121 match the opening A, that is, the cover plate 2121 can accurately cover the opening A to open or close the opening A.

[0070] The fan 2122 is disposed on the cover plate 2121, and the fan 2122 can transport airflow from the second side to the first side in a unidirectional manner;

[0071] by Figure 2 For example, when the opening A is closed by the cover plate 2121 , the unidirectional fan 2122 works to transmit airflow from bottom to top through the fan 2122 .

[0072] It can be understood that the cover plate 2121 not only serves as a structural part of the opening and closing structure, used to close or open the opening A; it also serves as a carrier of the fan 2122, achieving the effect of one-way ventilation. This integrated design simplifies the structure of the entire partition assembly 211, and can guide the airflow on the second side to the power module 30 to cool the power module 30, while further preventing heat from flowing back from the second side to the first side, thereby improving the effect of thermal insulation.

[0073] Preferably, the battery and the power module are both arranged at relative positions above and below the opening A, and the airflow can be directly introduced into the power module from the first side where the battery is located to optimize the airflow path, improve the efficiency of temperature control and achieve efficient airflow exchange.

[0074] In one embodiment of the utility model, the power module 30 can be removed from the first rack 221 as a whole, that is, moved from the first side to the second side through the above-mentioned opening A. This design makes it easier to access and install the power module 30, especially when space is limited or the equipment is closely arranged. The user does not need to go around the entire device or disassemble other components, but only needs to move the power module 30 from one side to the other through the opening A, which improves the maintainability and flexibility of the device.

[0075] like Figures 4 to 6 In another embodiment of the utility model, the power module 30 includes a first conversion module 31 and a second conversion module 32; optionally, the first conversion module 31 is an ADDC power converter, that is, an electronic device that converts alternating current (AC) power into direct current (DC) power to provide a stable DC power supply for the battery; the second conversion module 32 is a DCDC power converter, which is used to adjust and optimize the voltage level of the DC power supply.

[0076] By dividing the power module 30 into a first conversion module 31 and a second conversion module 32, and the first conversion module 31 is connected to the rack assembly 22, and the second conversion module 32 is detachably plugged into the first conversion module 31. This allows the power module to be customized according to different needs and application scenarios. For example, according to the charging requirements of a specific battery and the voltage requirements of battery charging and discharging, only the parameters of the second conversion module 32 (DCDC power converter) need to be replaced and adjusted. There is no need to reinstall and design the entire power module 30; this flexibility enables the charging and discharging device 100 to meet the voltage requirements of different batteries and improve scalability.

[0077] Further, the first conversion module 31 includes a first connection terminal 311. The first connection terminal 311 refers to an interface for electrical connection to allow current transfer. The first connection terminal 311 may be one or more electrical interfaces for connecting to the second conversion module 32. The second conversion module 32 includes a second connection terminal 321. Similar to the first connection terminal 311, the second connection terminal 321 is also one or more electrical interfaces for connecting to the first conversion module 31. The second connection terminal 321 and the first connection terminal 311 are plugged in to achieve electrical connection, that is, the staff can connect or separate the first connection terminal 311 from the first conversion module 31 by a simple plug-in action; for example, when the battery requires a different voltage or current for detection, the second conversion module 32 may need to be replaced with a module with different conversion characteristics. The staff only needs to disconnect the plug-in connection between the second conversion module 32 and the first conversion module 31, then unplug the second conversion module 32, and replace it with a new second conversion module 32 suitable for the current battery detection requirements. This plug-in connection method makes the replacement process simple and quick, improving work efficiency and system flexibility.

[0078] Furthermore, the second conversion module 32 can also be connected to the rack assembly 22, that is, when the second conversion module 32 is plugged into the first conversion module 31, it not only establishes an electrical connection with the first conversion module 31 through the terminal, but also obtains additional support through the rack assembly 22, so as to ensure the stability of the power module 30 during operation and reduce the risk of damage caused by vibration or external impact.

[0079] The second conversion module 32 is connected to the frame assembly 22 in any manner, such as by screw connection, clamping connection, etc.; Figure 6 In a feasible embodiment of the present invention, a connecting plate 322 is provided at one end of the second conversion module 32 away from the second connection terminal 321, and a plurality of screw holes B are provided on the connecting plate 322, and the screw holes B are used to screw the second conversion module 32 to the rack assembly 22 through screws or other fasteners. This helps to improve the stability of the second conversion module 32 in the plugged state; this additional fixing measure can prevent the second conversion module 32 from being accidentally disconnected, and improve the stability of current transmission.

[0080] like Figure 7 as well as Figure 8 The tooling module 20 also includes a guide structure 23, which is connected to the frame assembly 22 to ensure that during the plugging and unplugging process, through structural constraints, the second conversion module 32 can move along a predetermined path without lateral deviation or shaking.

[0081] The guide structure 23 can be a slide rail, a guide groove or a guide plate, etc. The guide structure 23 can match the second conversion module 32 to form a stable guide path. When the second conversion module 32 needs to be inserted or removed, the guide structure 23 will guide it to move in a straight line, while limiting any unnecessary movement in the lateral direction, so as to avoid structural interference between the second conversion module 32 and the rack assembly 22, thereby damaging the module.

[0082] In an optional solution, the guide structure 23 is a bent plate-like structure, including a guide plate 231 arranged perpendicular to the connecting plate 322, and a mounting plate 232 arranged parallel to the connecting plate 322; the guide plate 231 is constrained in the lateral direction to prevent the second conversion module 32 from lateral movement or displacement when being plugged into the first conversion module 31, thereby ensuring the stability and accuracy of the plug-in process.

[0083] The mounting plate 232 is arranged parallel to the connecting plate 322 , so that the mounting plate 232 can fit tightly on the connecting plate 322 and facilitate the installation of the fasteners of the screw holes B.

[0084] The guide structure 23 is provided with a plurality of penetrating heat dissipation holes 233 . Specifically, the heat dissipation holes 233 are provided on the guide plate 231 , providing a heat dissipation path for the entire power module 30 to avoid local overheating.

[0085] Furthermore, a handle structure 323 is provided at one end of the second conversion module 32 away from the first conversion module 31. The handle structure 323 can provide a stable gripping point, so that the staff can easily plug and unplug the second conversion module 32, reducing the difficulty and complexity of the operation. Secondly, the handle structure 323 can also serve as a winding and restraining point for the wiring harness of the power module 30, which can more conveniently manage and restrain these wiring harnesses, keep the wiring harness of the power module 30 neat and orderly, and avoid interference or entanglement with other structures.

[0086] Those skilled in the art should understand that if all or part of the sub-modules of the charging and discharging device 100 involved in the various products provided in the embodiments of the present invention are combined and replaced by fusion, simple change, mutual conversion, etc., such as the components are placed and moved; or the products they constitute are set as one piece; or designed to be detachable; all the combined components can form equipment / devices / systems with specific functions, and using such equipment / devices / systems to replace the corresponding components of the present invention also falls within the protection scope of the present invention.

[0087] In this regard, the embodiment of the utility model further provides a charging and discharging system 200, comprising the above-mentioned charging and discharging device 100; the charging and discharging device 100 can accommodate a battery tray loaded with batteries, and the batteries are provided with electrodes (not shown) at both ends perpendicular to the vertical direction; the charging and discharging device also includes a probe (not marked), and the probe can respectively clamp the corresponding electrodes

[0088] It is understood that the battery tray generally includes a fixing and locking mechanism to ensure that the battery does not move or fall off during transportation and use, so as to provide a specific area to place the batteries in an orderly manner. When the battery tray carries the battery to the preset area on the second side of the charging and discharging device 100, the probe clamps the corresponding electrode of the battery, thereby completing the charging and discharging process.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A charging and discharging device for a battery, characterized in that: include: A frame assembly (22) and a partition mechanism (21) arranged on the frame assembly (22); A power module (30) connected to the rack assembly (22); Wherein, the frame assembly (22) may also be provided with a battery; the power module (30) is located on a first side of the partition mechanism (21), and the battery is located on a second side of the partition mechanism (21); The partition mechanism (21) is provided with at least one opening (A) that can be opened or closed, and at least a portion of the power module (30) is configured to be movable from the first side to the second side when the opening (A) is opened.

2. The battery charging and discharging device according to claim 1, characterized in that: The partition mechanism (21) comprises: a partition assembly (211) provided with the opening (A); and The opening and closing structure (212) is movably connected to the partition assembly (211).

3. The charging and discharging device for a battery according to claim 2, characterized in that: The partition assembly (211) comprises a partition (2111) and a frame (2112) connected to the partition (2111); The opening (A) is arranged on the partition (2111), and the opening and closing structure (212) is slidably connected to the frame (2112) to open or close the opening (A).

4. The charging and discharging device for a battery according to claim 2, characterized in that: The opening and closing structure (212) comprises a cover plate (2121) and a fan (2122) arranged on the cover plate (2121); The cover plate (2121) and the opening (A) match each other so as to be able to open or close the opening (A).

5. The charging and discharging device for a battery according to any one of claims 2 to 4, characterized in that: The power module (30) comprises a first conversion module (31) and a second conversion module (32) capable of being plugged into the first conversion module (31); The first conversion module (31) is connected to the frame assembly (22), and the second conversion module (32) is configured to be movable from the first side to the second side when the opening (A) is opened.

6. The battery charging and discharging device according to claim 5, characterized in that: The second conversion module (32) is connected to the frame assembly (22).

7. The charging and discharging device for a battery according to claim 5, characterized in that: The first conversion module (31) comprises a first connection terminal (311), the second conversion module (32) comprises a second connection terminal (321), and the second conversion module (32) is plugged into or unplugged from the first connection terminal (311) via the second connection terminal (321).

8. The battery charging and discharging device according to claim 5, characterized in that: The charging and discharging device further comprises a guide structure (23); the guide structure (23) is connected to the frame assembly (22) to constrain the moving path of the second conversion module (32) during the plugging and unplugging process.

9. The charging and discharging device for a battery according to claim 8, characterized in that: The guide structure (23) is provided with a plurality of penetrating heat dissipation holes (233).

10. The charging and discharging device for a battery according to claim 5, characterized in that: A handle structure (323) is also provided at one end of the second conversion module (32) facing away from the first conversion module (31).

11. A charging and discharging system for a battery, characterized in that: include: The charging and discharging device according to any one of claims 1 to 10; the charging and discharging device can accommodate a battery tray loaded with batteries, and the batteries are provided with electrodes at both ends perpendicular to the vertical direction.

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