A portable lithium battery charging and discharging tool
Patent Information
- Application Number
- CN202522152458.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-11
AI Technical Summary
[0004]本实用新型的主要目的在于提供一种便捷式锂电池充放电工装，以解决相关技术中提出的在进行锂电池充放电测试时，存在传统的充放电测试通过线束直接连接充放电柜，线束接线繁琐且散热效率较低的问题
本实用新型中，通过电源线穿过防水接头进入安装腔内，连接到汇流铜排上，汇流铜排作为公共的电流总线，外部电源通过防水接头接入总线，充放电柜的正负极电源线通过防水接头进入，连接到汇流铜排上，公头、母头和连接插头通过线束连接至汇流铜排上，将不同型号、不同电流等级的接口集成在一个工装上，并分区、有序排列，每个插头都被牢固固定在插头支架上，其线缆在柜内规范布线，避免了拖拽磨损，通过上下分区的一号通槽和二号通槽将不同用途的接口在物理空间上分离，操作更清晰，用户根据待测锂电池的接口型号，选择对应的连接插头，柜门在测试时关闭，可以完全隔绝操作人员与内部高压电气部件，防止触电或短路事故，防止异物直接落入安装腔内，通过物理屏障实现人机隔离，保障基本操作安全，在进行接线、检查或维护时，可打开柜门进行操作，空气可沿挡板斜面流动进入，但灰尘、水珠因重力作用无法直接穿透，有效防止空气中的悬浮尘埃、水滴等垂直落入设备内部，提升了防护等级，防止灰尘、金属屑等异物进入安装腔内，造成短路风险，通风扇启动，将安装腔内的热空气持续向外抽排，使腔内形成负压，冷空气从底部进气孔被吸入安装腔，形成自下而上的冷却气流，气流经过汇流铜排的散热翅片时，带走其上的热量，大电流工作时，汇流铜排自身发热明显，温升过高影响测试可靠性，汇流铜排发热时，产生的热量快速传导至散热翅片，散热翅片增大表面积，提升与空气的换热效率，倾斜角度利于灰尘滑落，防止积灰影响散热。
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Figure CN224843202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charging and discharging fixtures, and in particular to a convenient lithium battery charging and discharging fixture. Background Technology
[0002] Lithium-ion batteries, as the most widely used energy storage components, are extensively applied in new energy vehicles, energy storage power stations, consumer electronics, power tools, aerospace, and other fields. The charging and discharging process is the core link in the energy storage and release of lithium-ion batteries, directly affecting battery performance, lifespan, safety, and system efficiency. Improper charging and discharging methods accelerate aging, and deep discharge or prolonged full-charge storage significantly shortens cycle life. In the entire lifecycle management of lithium-ion batteries—including R&D, production, quality inspection, repair, and secondary utilization—lithium-ion battery charging and discharging fixtures are a crucial auxiliary device. They not only bridge the gap between charging and discharging equipment and the battery under test but also serve as a core tool for safe, efficient, and standardized testing. Traditional charging and discharging cabinets place all charging and discharging wiring harnesses on the ground, resulting in low heat dissipation efficiency and reliance on natural cooling, leading to excessively high battery test temperatures and affecting test accuracy. Old-style charging and discharging cabinets have cumbersome wiring, poor compatibility, and require finding the correct plug before each test, potentially leading to errors, wasting time and effort, and posing safety hazards. Different types of lithium batteries use different types of connectors. The tooling integrates multiple interfaces, and users can choose the matching plug according to the battery type without replacing the entire cable. All charging and discharging harnesses are centrally connected through a busbar to form a unified power distribution center. The external main power supply only needs to be connected once to power multiple test channels, avoiding the chaos, poor contact or short circuit risks caused by traditional flying wire connections.
[0003] Traditional lithium battery charging and discharging tests involve directly connecting the charging and discharging cabinet with wiring harnesses, which is cumbersome and has low heat dissipation efficiency. Therefore, a convenient lithium battery charging and discharging fixture is provided. Utility Model Content
[0004] The main purpose of this utility model is to provide a convenient lithium battery charging and discharging fixture to solve the problem mentioned in related technologies that when conducting lithium battery charging and discharging tests, the traditional charging and discharging test involves directly connecting the charging and discharging cabinet with a wiring harness, which is cumbersome and has low heat dissipation efficiency.
[0005] To achieve the above objectives, according to one aspect of the present invention, a convenient lithium battery charging and discharging fixture is provided, including a sheet metal cabinet, with an installation cavity on one side of the sheet metal cabinet, and further including: a connecting part, the connecting part being provided inside the installation cavity, the connecting part being connected to an external wiring harness; and a cabinet door, the cabinet door being snapped onto one side of the sheet metal cabinet, the cabinet door forming a physical isolation.
[0006] Furthermore, a number of ventilation slots connecting the installation cavities are provided on one side wall of the sheet metal cabinet, and a baffle is fixedly installed at the opening of the ventilation slot, with the baffle tilted downward at 40-50°.
[0007] Furthermore, several insulator fixing frames are fixedly installed inside the mounting cavity. A busbar is fixedly installed at one end of each insulator fixing frame. Several heat dissipation fins are symmetrically fixedly installed on the side wall of the busbar, and the heat dissipation fins are inclined downward at 40-50°.
[0008] Furthermore, a number of mounting holes are provided on one side wall of the sheet metal cabinet, and waterproof connectors are fixedly installed at the mounting holes. The power cord enters the mounting cavity through the waterproof connectors and is connected to the busbar.
[0009] Furthermore, a ventilation fan is fixedly installed on the inner side wall of the mounting cavity, the ventilation fan passes through the sheet metal cabinet and connects to the outside, and several air inlets are opened through the lower surface of the mounting cavity.
[0010] Furthermore, several No. 1 through grooves are provided at the upper end of one side wall of the sheet metal cabinet, and several No. 2 through grooves are provided at the lower end of one side wall of the sheet metal cabinet.
[0011] Furthermore, the connection part includes several plug brackets, which are fixedly installed in the mounting cavity. Two sets of connectors are fixedly installed on the surface of the upper plug bracket. The connectors include male and female connectors. One end of the male and female connectors is close to the first through slot. Several connecting plugs are fixedly installed on the surface of the lower plug bracket. Each connecting plug has a different model. One end of the connecting plug is close to the second through slot. The male, female, and connecting plugs are connected to the busbar through a wire harness.
[0012] Furthermore, two handles are symmetrically fixedly installed on one side of the cabinet door.
[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the power cord passes through a waterproof connector into the mounting cavity and connects to the busbar. The busbar serves as a common current bus, and external power is connected to the busbar through the waterproof connector. The positive and negative power cords of the charging / discharging cabinet enter through the waterproof connector and connect to the busbar. Male, female, and connecting plugs are connected to the busbar via wire harnesses. Interfaces of different models and current ratings are integrated into a single fixture and arranged in a zoned and orderly manner. Each plug is firmly fixed to a plug bracket, and its cables are routed systematically inside the cabinet to avoid dragging and wear. The first and second through-slots in the upper and lower sections physically separate interfaces for different purposes, making operation clearer. Users select the corresponding connecting plug according to the interface model of the lithium battery under test. The cabinet door is closed during testing, completely isolating operators from internal high-voltage electrical components to prevent electric shock or short circuit accidents and preventing foreign objects from falling directly into the mounting cavity. The barrier achieves human-machine isolation, ensuring basic operational safety. During wiring, inspection, or maintenance, the cabinet door can be opened for operation, allowing air to flow in along the inclined surface of the baffle. However, dust and water droplets cannot directly penetrate due to gravity, effectively preventing suspended dust and water droplets from falling vertically into the equipment, thus improving the protection level and preventing dust, metal shavings, and other foreign objects from entering the installation cavity and causing short-circuit risks. When the ventilation fan starts, it continuously exhausts hot air from the installation cavity, creating negative pressure. Cool air is drawn into the installation cavity through the bottom air inlet, forming a cooling airflow from bottom to top. As the airflow passes over the heat dissipation fins of the busbar, it carries away the heat. During high-current operation, the busbar itself generates significant heat; excessive temperature rise affects test reliability. When the busbar heats up, the generated heat is quickly conducted to the heat dissipation fins. The increased surface area of the heat dissipation fins improves heat exchange efficiency with the air, and the inclined angle facilitates dust sliding off, preventing dust accumulation from affecting heat dissipation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the charging and discharging fixture in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting cavity in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the insulator fixing frame structure in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the sheet metal cabinet structure in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the busbar structure in a preferred embodiment of the present invention.
[0015] Figure label: 1. Sheet metal cabinet; 11. Mounting cavity; 12. Ventilation slot; 13. Mounting hole; 14. Ventilation fan; 15. No. 1 through slot; 16. Air inlet; 17. Connecting part; 18. Busbar; 121. Baffle; 131. Waterproof connector; 151. No. 2 through slot; 171. Plug bracket; 172. Male connector; 173. Female connector; 174. Connecting plug; 181. Heat dissipation fins; 182. Insulator fixing bracket; 2. Cabinet door; 21. Handle. Detailed Implementation
[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0017] This embodiment provides a convenient lithium battery charging and discharging fixture, including a sheet metal cabinet 1. The sheet metal cabinet 1 has a mounting cavity 11 on one side. The sheet metal cabinet 1 is a vertical metal box, and the mounting cavity 11 is used to house all electrical components. In this invention, the sheet metal cabinet 1 is preferably made of cold-rolled steel plate, with an insulating and anti-corrosion coating sprayed on its surface. Figure 2 , Figure 4 As shown, to increase heat dissipation while preventing debris from entering, several ventilation slots 12 are provided on one side wall of the sheet metal cabinet 1, connecting to the mounting cavity 11. A baffle 121 is fixedly installed at the opening of each ventilation slot 12, tilting downwards at a 40-50° angle. Air can flow in along the inclined surface of the baffle 121, but dust and water droplets cannot penetrate directly due to gravity. This effectively prevents suspended dust and water droplets in the air from falling vertically into the equipment, improving the protection level and preventing dust, metal shavings, and other foreign objects from entering the mounting cavity 11 and causing... Short circuit risk; A ventilation fan 14 is fixedly installed on the inner wall of the mounting cavity 11, and the ventilation fan 14 passes through the sheet metal cabinet 1 and connects to the outside. Several air inlets 16 are opened through the lower surface of the mounting cavity 11. Traditional equipment relies on natural heat dissipation, and heat accumulates inside the tooling, causing the lithium battery test temperature to be too high, affecting the test accuracy and safety. When the ventilation fan 14 is activated, it continuously draws the hot air in the mounting cavity 11 outward, creating a negative pressure inside the cavity. Cool air is drawn into the mounting cavity 11 from the bottom air inlets 16, forming a cooling airflow from bottom to top. Figure 2 , Figure 3 , Figure 5As shown, several insulator mounting brackets 182 are fixedly installed inside the mounting cavity 11. A busbar 18 is fixedly installed at one end of each insulator mounting bracket 182. Several heat dissipation fins 181 are symmetrically fixedly installed on the side wall of the busbar 18. The heat dissipation fins 181 are inclined downwards at a 40-50° angle. When the airflow passes over the heat dissipation fins 181 of the busbar 18, it carries away the heat on them. When operating at high current, the busbar 18 itself generates significant heat. Excessive temperature rise affects the reliability of the test. When the busbar 18 generates heat, the heat generated is quickly conducted to the heat dissipation fins 181. The heat dissipation fins 181 increase the surface area, improving the heat exchange efficiency with the air. The inclined angle facilitates the sliding of dust, preventing dust accumulation from affecting heat dissipation. Figure 3 As shown, a number of mounting holes 13 are provided on one side wall of the sheet metal cabinet 1. Waterproof connectors 131 are fixedly installed at the mounting holes 13. The power cord enters the mounting cavity 11 through the waterproof connectors 131 and connects to the busbar 18. The busbar 18 serves as a common current bus. The external power supply is connected to the busbar through the waterproof connectors 131. The positive and negative power cords of the charging and discharging cabinet enter through the waterproof connectors 131 and connect to the busbar 18. A number of No. 1 through slots 15 are provided at the upper end of one side wall of the sheet metal cabinet 1, and a number of No. 2 through slots 151 are provided at the lower end of one side wall of the sheet metal cabinet 1. It also includes: a connecting part 17, which has a mounting cavity 11, and the connecting part 17 connects to an external wiring harness; such as Figure 2 As shown, the connecting part 17 includes several plug brackets 171, which are fixedly installed in the mounting cavity 11. Two sets of connectors are fixedly installed on the surface of the upper plug bracket 171, including male connectors 172 and female connectors 173. One end of each male connector 172 and female connector 173 is close to the first through slot 15. Several connecting plugs 174 are fixedly installed on the surface of the lower plug bracket 171. Each connecting plug 174 has a different model, and one end of each connecting plug 174 is close to the second through slot 151. The male connectors 172, female connectors 173, and connecting plugs 174 are connected to the busbar 18 via a wire harness. In this application, the male connector 172 is a REMA320 male connector. The connector has a female connector 173 (REMA320), and male connectors 172 and 173 facing slot 15. Connector 174 is a variety of Anderson connectors with its interface facing slot 2 (2). Different types and current ratings of connectors are integrated into one fixture and arranged in a partitioned and orderly manner. Each connector is firmly fixed to the connector bracket 171. The cables are neatly routed inside the cabinet to avoid dragging and wear. The upper and lower partitions of slot 15 and slot 2 (2) separate the connectors for different purposes in physical space, making the operation clearer. Users can select the corresponding connector 174 according to the interface model of the lithium battery under test. It also includes: cabinet door 2, which is snap-fitted onto one side of the sheet metal cabinet 1, forming a physical barrier; such as Figure 1As shown, two handles 21 are symmetrically fixed on one side of the cabinet door 2. The cabinet door 2 is closed during testing, which can completely isolate the operator from the internal high-voltage electrical components, prevent electric shock or short circuit accidents, and prevent foreign objects from falling directly into the installation cavity 11. Human-machine isolation is achieved through physical barriers to ensure basic operational safety. When wiring, inspection or maintenance is performed, the cabinet door 2 can be opened for operation.
[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A convenient lithium battery charging and discharging fixture, comprising a sheet metal cabinet (1), wherein a mounting cavity (11) is provided on one side of the sheet metal cabinet (1), characterized in that, Also includes: The connecting part (17) is provided with a mounting cavity (11) and the connecting part (17) is connected to an external wire harness; Cabinet door (2) is snapped onto one side of sheet metal cabinet (1), forming a physical barrier.
2. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, The sheet metal cabinet (1) has several ventilation slots (12) that connect to the installation cavity (11) on one side wall. A baffle (121) is fixedly installed at the opening of the ventilation slot (12). The baffle (121) is inclined downward at 40-50°.
3. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, Several insulator fixing frames (182) are fixedly installed in the mounting cavity (11). A busbar (18) is fixedly installed at one end of the insulator fixing frame (182). Several heat dissipation fins (181) are symmetrically fixedly installed on the side wall of the busbar (18). The heat dissipation fins (181) are inclined downward at 40-50°.
4. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, The sheet metal cabinet (1) has several mounting holes (13) on one side wall. A waterproof connector (131) is fixedly installed at the mounting hole (13). The power cord enters the mounting cavity (11) through the waterproof connector (131) and is connected to the busbar (18).
5. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, A ventilation fan (14) is fixedly installed on the inner wall of the mounting cavity (11). The ventilation fan (14) passes through the sheet metal cabinet (1) and connects to the outside. Several air inlets (16) are opened through the lower surface of the mounting cavity (11).
6. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, The sheet metal cabinet (1) has several No. 1 through grooves (15) at the upper end of one side wall and several No. 2 through grooves (151) at the lower end of one side wall.
7. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, The connecting part (17) includes several plug brackets (171). The plug brackets (171) are fixedly installed in the mounting cavity (11). Two sets of connectors are fixedly installed on the surface of the upper plug bracket (171). The connectors include male connectors (172) and female connectors (173). One end of the male connectors (172) and female connectors (173) is close to the first through slot (15). Several connecting plugs (174) are fixedly installed on the surface of the lower plug bracket (171). Each connecting plug (174) has a different model. One end of the connecting plug (174) is close to the second through slot (151). The male connectors (172), female connectors (173) and connecting plugs (174) are connected to the busbar (18) through a wire harness.
8. The portable lithium battery charging and discharging fixture according to claim 1, characterized in that, Two handles (21) are symmetrically fixed on one side of the cabinet door (2).