Battery case for a battery module

Abstract

The utility model discloses a battery box for battery module, including battery box main part, placing plate and a plurality of batteries, the battery box main part has the accommodation cavity, the placing plate sets up in the accommodation cavity, is provided with a plurality of through -holes on the placing plate, the first elastic stop piece and the second elastic stop piece are oppositely set up to the week side of a plurality of through -holes, the first elastic stop piece includes first elastic arm and first buckling part, the second elastic stop piece includes second elastic arm and second buckling part, the a plurality of batteries are installed in the placing position, like this, make the upper end of battery be limited to first limit portion and second limit portion respectively, prevent the phenomenon of battery and influence use of loosening.

Description

Technical Field

[0001] This utility model relates to the field of battery modules, and in particular to a battery box for battery modules. Background Technology

[0002] A battery module can be understood as an intermediate product formed by combining lithium-ion cells in series and parallel, and adding individual cell monitoring and management devices. Its structure must support, fix, and protect the cells, which can be summarized in three main aspects: mechanical strength, electrical performance, and thermal performance, as well as fault handling capabilities. Whether it can properly fix the cell position and protect it from deformation that would impair its performance, how it meets current-carrying capacity requirements, how it controls cell temperature, whether it can cut off power in case of severe anomalies, and whether it can prevent the propagation of thermal runaway, etc., are all standard criteria for judging the quality of a battery module. As an important component of the battery module, the battery box's structural design directly affects the safety, stability, and lifespan of the battery module.

[0003] Traditional battery boxes for battery modules have several shortcomings in their battery securing methods. Some battery boxes use simple slots or brackets to limit the battery's position. However, when the battery module is subjected to vibration, impact, or other external forces, the battery is prone to displacement or even detachment. This not only affects the normal operation of the battery module but may also cause safety hazards such as short circuits. Furthermore, some battery boxes have overly complex securing structures, increasing the difficulty of battery installation and removal, hindering later maintenance and replacement, and leading to higher repair costs.

[0004] Therefore, it is necessary to research a new technical solution to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a battery box for a battery module. Through the structural design of the first elastic limiting member and the second elastic limiting member, the first elastic limiting member and the second elastic limiting member are arranged opposite to each other on the periphery of the plurality of through holes. In this way, the upper end of the battery is restricted by the first limiting member and the second limiting member respectively, so as to prevent the battery from becoming loose and affecting its use.

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

[0007] A battery box for a battery module includes a battery box body, a placement plate, and a plurality of batteries; the battery box body has a receiving cavity, the placement plate is disposed in the receiving cavity, the placement plate is provided with a plurality of through holes, and a plurality of first elastic limiting members and second elastic limiting members for limiting the batteries are arranged opposite to each other on the periphery of the plurality of through holes.

[0008] The first elastic limiting member includes a first elastic arm and a first fastening part. The first elastic arm extends from the upper end of the through hole, and the first fastening part extends from the upper edge of the first elastic arm toward the second elastic limiting member. The second elastic limiting member includes a second elastic arm and a second fastening part. The second elastic arm extends from the upper end of the through hole, and the second fastening part extends from the upper edge of the second elastic arm toward the first elastic limiting member, thereby forming a placement position. The plurality of batteries are installed in the placement position, such that the upper ends of the batteries are respectively limited by the first limiting part and the second limiting part.

[0009] As a preferred embodiment, the first elastic limiting member and the second elastic limiting member further include a reinforcing part, one end of which is connected to the placement plate, and the other end of which is connected to the corresponding first elastic arm and second elastic arm, thereby increasing the strength of the first elastic arm and the second elastic arm.

[0010] As a preferred embodiment, the battery box for the battery module further includes a busbar and an integrated circuit board, which are arranged sequentially from top to bottom within the receiving cavity. The battery is electrically connected to the busbar, and the integrated circuit board is electrically connected to the busbar, concentrating the charging and discharging current of the battery onto a metal conductor to achieve current collection. At the same time, the current is reasonably distributed to different branches or devices according to the circuit design to ensure stable current transmission.

[0011] As a preferred embodiment, the integrated circuit board is provided with an overcharge and over-discharge protection circuit, which is electrically connected to the battery. A temperature sensor and a power display module are also provided inside the housing cavity. The temperature sensor is electrically connected to the integrated circuit board, and the power display module is connected to the integrated circuit board to obtain battery power information. The battery box body is provided with a charging interface and a display screen for displaying the battery's power, temperature, or charge / discharge status. The display screen is electrically connected to the integrated circuit board. The integrated circuit board is connected to the battery module via wires to collect, process, and control information such as battery voltage, current, and temperature in real time.

[0012] As a preferred embodiment, the battery box body includes a frame and a cover, wherein the cover is detachably fitted onto the upper end of the frame to form a receiving cavity.

[0013] As a preferred embodiment, the outer surfaces of the frame and the cover are provided with a fireproof layer.

[0014] As a preferred embodiment, the fireproof layer is made of magnesium substrate.

[0015] As a preferred embodiment, a lifting ring is fixedly installed on one side of the frame.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly relies on the structural design of the first elastic limiting member and the second elastic limiting member. The first elastic limiting member and the second elastic limiting member are arranged opposite to each other on the periphery of the plurality of through holes. The first elastic limiting member includes a first elastic arm and a first fastening part, and the second elastic limiting member includes a second elastic arm and a second fastening part. The plurality of batteries are installed in the placement position, so that the upper end of the battery is restricted by the first limiting part and the second limiting part respectively, so as to prevent the battery from becoming loose and affecting its use.

[0017] Secondly, the design of multiple sets of the first and second elastic limiting components can separate adjacent batteries to prevent short circuits between batteries; finally, the design of the elastic arm can prevent the battery from being squeezed and deformed.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0021] Figure 3 This is a structural diagram of the placement plate according to an embodiment of this utility model;

[0022] Figure 4 This is a control block diagram of an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached diagram:

[0024] 1. Battery box body; 11. Receiving cavity

[0025] 12. Fireproof layer 13. Frame

[0026] 14. Cover body 15. Lifting ring

[0027] 16. Charging port 17. Display screen

[0028] 2. Placement plate 21, through hole

[0029] 22. First elastic limiting member; 23. Second elastic limiting member

[0030] 221. First elastic arm; 222. First fastening part

[0031] 231. Second elastic arm; 232. Second fastening part

[0032] 24. Reinforcing part 25. Placement position

[0033] 3. Battery

[0034] 4. Busbar board 5. Integrated circuit board

[0035] 6. Overcharge and over-discharge protection circuit; 7. Temperature sensor

[0036] 8. Battery level display module. Detailed Implementation

[0037] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0038] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0039] A battery box for a battery module includes a battery box body 1, a placement plate 2, and a plurality of batteries 3.

[0040] The battery box body 1 has a receiving cavity 11. Preferably, the battery box body 1 includes a frame 13 and a cover 14, the cover 14 being detachably fitted onto the upper end of the frame 13 to form the receiving cavity 11. Preferably, a fireproof layer 12 is provided on the outer surface of the frame 13 and the cover 14. The fireproof layer 12 is made of magnesium substrate material, which can prevent the spread of fire to a certain extent and reduce the risk of fire. A lifting ring 15 is fixedly installed on one side of the frame 13.

[0041] The placement plate 2 is disposed in the receiving cavity 11. The placement plate 2 is provided with a plurality of through holes 21. A plurality of first elastic limiting members 22 and second elastic limiting members 23 for limiting the battery 3 are arranged opposite to each other on the periphery of the plurality of through holes 21.

[0042] The first elastic limiting member 22 includes a first elastic arm 221 and a first fastening part 222. The first elastic arm 221 extends from the upper end of the through hole 21, and the first fastening part 222 extends from the upper edge of the first elastic arm 221 toward the second elastic limiting member 23. The second elastic limiting member 23 includes a second elastic arm 231 and a second fastening part 232. The second elastic arm 231 extends from the upper end of the through hole 21, and the second fastening part 232 extends from the upper edge of the second elastic arm 231 toward the first elastic limiting member 22, thereby forming a placement position 25. The plurality of batteries 3 are installed in the placement position 25, such that the upper ends of the batteries 3 are respectively limited by the first limiting part and the second limiting part.

[0043] Preferably, the first elastic limiting member 22 and the second elastic limiting member 23 further include a reinforcing part 24, one end of which is connected to the placement plate 2, and the other end of which is connected to the corresponding first elastic arm 221 and second elastic arm 231, thereby increasing the strength of the first elastic arm 221 and the second elastic arm 231.

[0044] Preferably, the battery box for the battery module further includes a busbar 4 and an integrated circuit board 5. The placement plate 2, busbar 4, and integrated circuit board 5 are arranged sequentially from top to bottom within the receiving cavity 11. The battery 3 is electrically connected to the busbar 4, and the integrated circuit board 5 is electrically connected to the busbar 4, concentrating the charging and discharging current of the battery 3 onto a single metal conductor to achieve current collection. Simultaneously, according to the circuit design, the current is rationally distributed to different branches or devices to ensure stable current transmission. Serving as an electrical connection bridge between individual battery cells, it makes the internal circuit connections of the battery module more regular and compact. It also serves to fix the individual battery cells, enhancing the structural stability of the battery module. By setting corresponding acquisition points and circuits on the busbar 4, voltage signals from individual battery cells or the battery group can be easily acquired, providing voltage data to the battery management system for power calculation, status monitoring, and protection.

[0045] Preferably, the integrated circuit board 5 is provided with an overcharge and over-discharge protection circuit 6, which is electrically connected to the battery 3. The cavity 11 is also provided with a temperature sensor 7 and a power display module 8. The temperature sensor 7 is electrically connected to the integrated circuit board 5, and the power display module is connected to the integrated circuit board 5 to obtain the power information of the battery 3. The integrated circuit board 5 transmits the processed relevant information to the display screen 17 for display.

[0046] The battery box body 1 is equipped with a charging interface 16 and a display screen 17 for displaying the battery 3's power level, temperature, or charging / discharging status. The display screen 17 is electrically connected to an integrated circuit board 5, which is connected to the battery 3 module via wires. The integrated circuit board 5 collects, processes, and controls information such as the battery 3's voltage, current, and temperature in real time. The charging interface 16 has high power transmission capability, meeting the needs of fast charging, and also has good compatibility, allowing connection to various charging devices.

[0047] The key design feature of this utility model lies in its structural design of a first elastic limiting member and a second elastic limiting member. The first elastic limiting member and the second elastic limiting member are arranged opposite each other on the periphery of the plurality of through holes. The first elastic limiting member includes a first elastic arm and a first fastening part, and the second elastic limiting member includes a second elastic arm and a second fastening part. The plurality of batteries are installed in the placement position, so that the upper end of the battery is respectively restricted by the first limiting part and the second limiting part to prevent the battery from becoming loose and affecting its use.

[0048] Secondly, the design of multiple sets of the first and second elastic limiting components can separate adjacent batteries to prevent short circuits between batteries; finally, the design of the elastic arm can prevent the battery from being squeezed and deformed.

[0049] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery box for a battery module, characterized in that: It includes a battery box body, a placement plate and several batteries; the battery box body has a receiving cavity, the placement plate is disposed in the receiving cavity, the placement plate is provided with several through holes, and multiple sets of first elastic limiting members and second elastic limiting members for limiting the batteries are arranged opposite to each other on the periphery of the several through holes. The first elastic limiting member includes a first elastic arm and a first fastening part. The first elastic arm extends from the upper end of the through hole, and the first fastening part extends from the upper edge of the first elastic arm toward the second elastic limiting member. The second elastic limiting member includes a second elastic arm and a second fastening part. The second elastic arm extends from the upper end of the through hole, and the second fastening part extends from the upper edge of the second elastic arm toward the first elastic limiting member, thereby forming a placement position. The plurality of batteries are installed in the placement position, such that the upper ends of the batteries are respectively limited by the first limiting part and the second limiting part.

2. The battery box for a battery module according to claim 1, characterized in that: The first elastic limiting member and the second elastic limiting member also include a reinforcing part, one end of which is connected to the placement plate, and the other end of which is connected to the corresponding first elastic arm and second elastic arm.

3. The battery box for a battery module according to claim 1, characterized in that: The battery box for the battery module also includes a busbar and an integrated circuit board, which are arranged sequentially from top to bottom in the receiving cavity; the battery is electrically connected to the busbar, and the integrated circuit board is electrically connected to the busbar.

4. The battery box for a battery module according to claim 3, characterized in that: The integrated circuit board is provided with an overcharge and over-discharge protection circuit, which is electrically connected to the battery. The housing cavity is also provided with a temperature sensor and a power display module. The temperature sensor is electrically connected to the integrated circuit board, and the power display module is connected to the integrated circuit board to obtain the battery's power information. The battery box body is provided with a charging interface and a display screen for displaying the battery's power, temperature, or charging / discharging status. The display screen is electrically connected to the integrated circuit board.

5. The battery box for a battery module according to claim 1, characterized in that: The battery box body includes a frame and a cover. The cover is detachably fitted onto the upper end of the frame to form a receiving cavity.

6. The battery box for a battery module according to claim 5, characterized in that: The outer surfaces of the frame and cover are provided with a fireproof layer.

7. The battery box for a battery module according to claim 6, characterized in that: The fireproof layer is made of magnesium substrate.

8. The battery box for a battery module according to claim 5, characterized in that: A lifting ring is fixedly installed on one side of the frame.

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