Protective cover plate structure of lithium battery

Abstract

The utility model discloses a lithium battery protection cover plate structure which comprises a sliding bottom cover, the upper side wall of the sliding bottom cover is fixedly connected with a matching frame, the upper side wall of the matching frame is fixedly connected with a plurality of energy absorption springs, the upper side walls of the energy absorption springs are fixedly connected with a fixed top cover, crumple grooves are formed in the middles of the energy absorption springs, and the upper side walls of the crumple grooves are fixedly connected with the sliding bottom cover. A heat conduction block is arranged in the upper side wall of the fixed top cover, a liquid storage cavity is formed in the heat conduction block, and a plurality of heat conduction rods are evenly arranged in the heat conduction block. A plurality of heat exchange pipes are fixedly connected to the lower side wall of the heat conduction block, a plurality of heat dissipation bottom blocks are evenly arranged in the lower side wall of the sliding bottom cover, an elastic pad is fixedly connected to the bottom of each heat dissipation bottom block, a liquid storage cavity is formed in each heat dissipation bottom block, and heat dissipation liquid is arranged in the heat conduction block. According to the utility model, the impact force can be effectively reduced through the arrangement of the matching frame and the energy absorption spring, so that the safety of the lithium battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery protective cover plate structure. Background Art

[0002] The lithium battery is composed of a shell, a lithium battery core and a cover plate. The lithium battery core can also be called a roll core, which includes a positive electrode sheet, a diaphragm and a negative electrode sheet. The diaphragm separates the positive electrode sheet from the negative electrode sheet, and there are positive electrode sheet foil and negative electrode sheet foil extensions on both sides of the lithium battery core. The cover plate is arranged on the upper part of the lithium battery core and welded and sealed to form a battery. The above-mentioned cover plate is the main component of the lithium battery, which includes the cover plate substrate, positive and negative poles, sealing gaskets, electrode pressure plates and electrode leads.

[0003] The traditional protective cover plate and the lithium battery cover plate are generally fixed by gluing or welding. After the protective cover plate is subjected to impact force, the lithium battery cover plate will be damaged together with the anti-slip cover plate, which greatly reduces the safety of the lithium battery. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a lithium battery protective cover structure, the device is provided with a matching frame and an energy absorbing spring, when the bottom of the protective cover is impacted, the sliding bottom cover slides upward, and the energy absorbing spring absorbs heat and breaks at the collapse groove, thereby effectively reducing the impact force, thereby improving the safety of the lithium battery;

[0005] The device is provided with a heat conductive block and a heat dissipation bottom block. The heat conductive block can absorb the heat transferred by the lithium battery, thereby improving the heat dissipation effect of the lithium battery. The heat absorbed by the heat conductive block can be transferred to the heat dissipation liquid through the heat conductive rod. The heat dissipation liquid enters the heat dissipation bottom block through the liquid exchange pipe. The heat dissipation bottom block can accelerate the heat dissipation, thereby improving the heat dissipation effect of the cover plate.

[0006] The utility model also provides a lithium battery protective cover structure as described above, comprising: a sliding bottom cover, the upper side wall of the sliding bottom cover is fixedly connected to a matching frame, the upper side wall of the matching frame is fixedly connected to a plurality of energy absorbing springs, the upper side wall of the energy absorbing spring is fixedly connected to a fixed top cover, a collapse groove is provided in the middle of the energy absorbing spring, a heat conduction block is provided inside the upper side wall of the fixed top cover, a liquid storage cavity is provided inside the heat conduction block, and a plurality of heat conduction rods are evenly provided inside the heat conduction block;

[0007] A plurality of heat exchange tubes are fixedly connected to the lower side wall of the heat conductive block, a plurality of heat dissipation bottom blocks are evenly arranged inside the lower side wall of the sliding bottom cover, an elastic pad is fixedly connected to the bottom of each heat dissipation bottom block, a liquid storage cavity is arranged inside the heat dissipation bottom block, and heat dissipation liquid is arranged inside the heat conductive block.

[0008] According to the lithium battery protective cover plate structure, the matching frame and the fixed top cover are slidably connected to improve the sliding stability of the matching frame.

[0009] According to the lithium battery protective cover plate structure, a folding tube is fixedly connected to the middle of the heat exchange tube, so that the heat exchange tube can be extended and retracted, thereby allowing the heat exchange tube to cooperate with the folding of the cover plate.

[0010] According to the lithium battery protective cover plate structure, the heat conductive block, the heat conductive rod and the heat dissipation bottom block are all made of pure copper material, which can effectively improve the heat dissipation effect and thermal conductivity effect of the heat conductive block, the heat conductive rod and the heat dissipation bottom block.

[0011] According to the lithium battery protective cover plate structure, the spacing between the lower side wall of the heat dissipation base block and the lower side wall of the sliding base cover is set to .-. mm, so that the lower half of the heat dissipation base block is not blocked by the sliding base cover, thereby effectively improving the heat dissipation effect of the heat dissipation base block.

[0012] According to the lithium battery protective cover structure, both sides of the front side wall of the heat dissipation base block are provided with air guide grooves to increase the coverage area of ​​the heat dissipation base block by wind, thereby improving the heat dissipation effect of the heat dissipation base block.

[0013] According to the lithium battery protective cover structure, the upper side wall of the heat dissipation bottom block and the heat exchange tube are fixedly connected to facilitate the circulation of the heat dissipation liquid.

[0014] According to the lithium battery protective cover plate structure, the sliding bottom cover, the matching frame and the fixed top cover are all made of aluminum alloy material, which improves the structural strength of the sliding bottom cover, the matching frame and the fixed top cover and effectively reduces the overall weight of the cover plate.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of a lithium battery protective cover structure of the utility model;

[0018] Figure 2 This is a bottom schematic diagram of a lithium battery protective cover structure of the utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of a lithium battery protective cover structure of the utility model;

[0020] Figure 4The utility model is a top view schematic diagram of a lithium battery protective cover structure.

[0021] Legend:

[0022] 1. Sliding bottom cover; 101. Matching frame; 102. Energy absorbing spring; 2. Fixed top cover; 201. Heat conducting block; 2011. Heat conducting rod; 202. Heat exchange tube; 203. Folding tube; 3. Heat dissipation bottom block; 301. Air guide slot; 302. Liquid storage chamber; 303. Elastic pad. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Reference Figure 1-4 The utility model embodiment provides a lithium battery protective cover structure, which includes: a sliding bottom cover 1, the upper side wall of the sliding bottom cover 1 is fixedly connected with a matching frame 101, and the matching frame 101 is slidably connected to the fixed top cover 2 to improve the sliding stability of the matching frame 101.

[0026] The upper side wall of the matching frame 101 is fixedly connected with a plurality of energy absorbing springs 102, the upper side wall of the energy absorbing spring 102 is fixedly connected with a fixed top cover 2, a collapse groove is provided in the middle of the energy absorbing spring 102, a heat conducting block 201 is provided inside the upper side wall of the fixed top cover 2, a liquid storage cavity is provided inside the heat conducting block 201, and a plurality of heat conducting rods 2011 are evenly provided inside the heat conducting block 201;

[0027] A plurality of heat exchange tubes 202 are fixedly connected to the lower side wall of the heat conductive block 201, and a folding tube 203 is fixedly connected to the middle of the heat exchange tube 202, so that the heat exchange tube 202 can be extended and retracted, thereby enabling the heat exchange tube 202 to cooperate with the folding of the cover plate. The sliding bottom cover 1, the matching frame 101 and the fixed top cover 2 are all made of aluminum alloy material, which improves the structural strength of the sliding bottom cover 1, the matching frame 101 and the fixed top cover 2 and effectively reduces the overall weight of the cover plate.

[0028] A plurality of heat dissipation bottom blocks 3 are evenly arranged inside the lower side wall of the sliding bottom cover 1, and an elastic pad 303 is fixedly connected to the bottom of each heat dissipation bottom block 3, a liquid storage chamber 302 is arranged inside the heat dissipation bottom block 3, and heat dissipation liquid is arranged inside the heat conductive block 201, the heat conductive rod 2011 and the heat dissipation bottom block 3 are all made of pure copper material, which can effectively improve the heat dissipation effect and heat conduction effect of the heat conductive block 201, the heat conductive rod 2011 and the heat dissipation bottom block 3, and the distance between the lower side wall of the heat dissipation bottom block 3 and the lower side wall of the sliding bottom cover 1 is set to 0.5-1.0 mm, so that the lower half of the heat dissipation bottom block 3 is not blocked by the sliding bottom cover 1, thereby effectively improving the heat dissipation effect of the heat dissipation bottom block 3, and both sides of the front side wall of the heat dissipation bottom block 3 are provided with air guide grooves 301, which increase the coverage area of ​​the wind on the heat dissipation bottom block 3, thereby improving the heat dissipation effect of the heat dissipation bottom block 3, and the upper side wall of the heat dissipation bottom block 3 is fixedly connected to the heat exchange tube 202, which is convenient for the circulation of the heat dissipation liquid.

[0029] Working principle: Before using the protective cover, fix the sliding bottom cover 1 and the protective shell of the lithium battery, and fix the top cover 2 to support the lithium battery. The heat-conducting block 201 can absorb the heat transferred by the lithium battery, thereby improving the heat dissipation effect of the lithium battery. The heat absorbed by the heat-conducting block 201 can be transferred to the heat dissipation liquid through the heat-conducting rod 2011. The heat dissipation liquid enters the heat dissipation bottom block 3 through the liquid exchange tube 202. The heat dissipation bottom block 3 can accelerate the heat dissipation, thereby improving the heat dissipation effect of the cover. When the bottom of the protective cover is impacted, the sliding bottom cover 1 slides upward, and the energy-absorbing spring 102 absorbs heat and breaks at the collapse groove, thereby effectively reducing the impact force and improving the safety of the lithium battery.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A lithium battery protective cover structure, characterized in that: include: A sliding bottom cover (1), wherein the upper side wall of the sliding bottom cover (1) is fixedly connected to a matching frame (101), the upper side wall of the matching frame (101) is fixedly connected to a plurality of energy absorbing springs (102), the upper side wall of the energy absorbing spring (102) is fixedly connected to a fixed top cover (2), a collapse groove is provided in the middle of the energy absorbing spring (102), a heat conducting block (201) is provided inside the upper side wall of the fixed top cover (2), a liquid storage cavity is provided inside the heat conducting block (201), and a plurality of heat conducting rods (2011) are evenly provided inside the heat conducting block (201); A plurality of heat exchange tubes (202) are fixedly connected to the lower side wall of the heat conducting block (201), a plurality of heat dissipation bottom blocks (3) are evenly arranged inside the lower side wall of the sliding bottom cover (1), an elastic pad (303) is fixedly connected to the bottom of each heat dissipation bottom block (3), a liquid storage cavity (302) is arranged inside the heat dissipation bottom block (3), and heat dissipation liquid is arranged inside the heat conducting block (201).

2. A lithium battery protective cover structure according to claim 1, characterized in that: The matching frame (101) and the fixed top cover (2) are slidably connected.

3. A lithium battery protective cover structure according to claim 1, characterized in that: A folded tube (203) is fixedly connected to the middle portion of the heat exchange tube (202).

4. A lithium battery protective cover structure according to claim 1, characterized in that: The heat conducting block (201), the heat conducting rod (2011) and the heat dissipation bottom block (3) are all made of pure copper material.

5. The lithium battery protective cover structure according to claim 1, characterized in that: The distance between the lower side wall of the heat dissipation bottom block (3) and the lower side wall of the sliding bottom cover (1) is set to 0.5-1.0 mm.

6. A lithium battery protective cover structure according to claim 1, characterized in that: Air guide grooves (301) are arranged on both sides of the front side wall of the heat dissipation bottom block (3).

7. The lithium battery protective cover structure according to claim 1, characterized in that: The upper side wall of the heat dissipation bottom block (3) and the heat exchange tube (202) are fixedly connected.

8. The lithium battery protective cover structure according to claim 1, characterized in that: The sliding bottom cover (1), the matching frame (101) and the fixed top cover (2) are all made of aluminum alloy material.

Images