Explosion-proof shell for lithium ion battery
By designing an explosion-proof shell with buffer clamping, heat dissipation, and telescopic mechanisms, the safety hazards of lithium-ion batteries under impact and short circuit are solved, achieving efficient shock absorption and explosion-proof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-03-24
AI Technical Summary
Existing explosion-proof casings for lithium-ion batteries have poor shock absorption, are easily damaged by impacts, and are difficult to handle in a timely manner in the event of a short circuit, which can easily lead to deflagration and pose a safety hazard.
An explosion-proof housing was designed, which includes a buffer clamping mechanism, a heat dissipation mechanism, and a telescopic mechanism. It clamps and fixes the battery, absorbs impact force, dissipates heat, and injects carbon dioxide gas to prevent deflagration when the battery is damaged.
It improves the battery's shock absorption and impact resistance, reduces the risk of damage caused by impact, and injects carbon dioxide gas in time when the battery is damaged to prevent deflagration and extend the user's response time.
Smart Images
Figure CN224036544U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium ion battery technical field, concretely is a kind of explosion-proof shell for lithium ion battery. BACKGROUND
[0002] Lithium ion battery is a kind of secondary battery (rechargeable battery), it mainly relies on lithium ion to move between positive and negative to work, lithium ion battery is widely used in various electronic equipment and electric vehicle etc. because of its high energy density, long life and other advantages. However, lithium ion battery can cause internal temperature and pressure to sharply increase in the use process due to overcharge, overdischarge, short circuit and other reasons, thereby causing explosion, there is serious safety hazard, so it needs to use explosion-proof shell to protect it.
[0003] But the existing explosion-proof shell increases the strength of shell by welding explosion-proof sheet, and the shock-absorbing effect of battery is poor, the battery is easily damaged when impacted, and the battery is not convenient to dispose in time when short circuit occurs, and explosion is easily occurred, which brings inconvenience to the use of user.
[0004] Therefore, it needs to be reformed, the shock-absorbing effect of battery is improved by clamping protection to the four sides of battery, and carbon dioxide gas is injected into the inside of shell when battery is damaged, explosion of battery is avoided, reaction time of user is improved, and user is convenient to use. UTILITY MODEL CONTENTS
[0005] To solve the problems in the background art, the utility model aims at providing an explosion-proof shell for lithium ion battery, which has the advantages of improving the shock-absorbing effect of battery by clamping protection to the four sides of battery, injecting carbon dioxide gas into the inside of shell when battery is damaged, avoiding explosion of battery, improving reaction time of user, and being convenient for user to use, and solves the problems of the existing explosion-proof shell, such as poor shock-absorbing effect of battery, easy damage of battery when impacted, inconvenience to dispose battery in time when short circuit occurs, easy explosion, and inconvenience to user.
[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of explosion-proof shell for lithium ion battery, including bottom shell, the top of the bottom shell is fixedly connected with top shell, the inside of the bottom shell is provided with battery body, the left and right sides of the inner wall of the bottom shell are both provided with buffer clamping mechanism, the inside of the buffer clamping mechanism is attached with the surface of battery body, the left and right sides of the inner wall of the bottom shell are both provided with heat dissipation mechanism, the inside of the heat dissipation mechanism is attached with the surface of battery body, the top of the inner wall of the top shell is fixedly connected with telescopic mechanism in four corners, the bottom of the telescopic mechanism is fixedly connected with moving plate, the left and right sides of the moving plate are both fixedly connected with closed plate, and the outside of two closed plates is slidably connected with the inner wall of top shell, the left and right sides of the bottom shell are both fixedly connected with side box, the inside of the side box is fixedly connected with carbon dioxide gas tank, the output end of the carbon dioxide gas tank is penetrated to the inside of top shell and attached with the outside of closed plate.
[0007] As preferred by the utility model, the buffer clamping mechanism includes a buffer air bag fixedly connected to the left and right sides of the inner wall of the bottom shell, the inside of the buffer air bag is fixedly connected with a rubber plate, and the inside of the rubber plate is attached to the surface of the battery body.
[0008] As preferred by the utility model, the heat dissipation mechanism includes heat absorption plates attached to the left and right sides of the battery body, the outside of the heat absorption plates is fixedly connected with a plurality of evenly distributed heat plates, and the outer end of the heat plates is penetrated to the outside of the bottom shell and fixedly connected with a heat dissipation plate.
[0009] As preferred by the utility model, the telescopic mechanism includes damping rods fixedly connected to the top of the inner wall of the top shell in four corners, the bottom end of the damping rods is fixedly connected with the top of the moving plate, a compression spring is sleeved on the surface of the damping rods, the top end of the compression spring is fixedly connected with the top of the inner wall of the top shell, and the bottom end of the compression spring is fixedly connected with the top of the moving plate.
[0010] As preferred by the utility model, the bottom of the inner wall of the bottom shell is fixedly connected with an EPP foam plate, the top of the EPP foam plate is fixedly connected with a calcium-silicon plate, the top of the calcium-silicon plate is fixedly connected with an ice and fire plate, and the top of the ice and fire plate is attached to the bottom of the battery body.
[0011] As preferred by the utility model, the left and right sides of the top of the moving plate are both communicated with pressure relief valves, and the left and right sides of the top of the top shell are both provided with exhaust holes.
[0012] Compared with the prior art, the utility model has the beneficial effects as follows:
[0013] 1. The utility model discloses a battery body is arranged in the inside of bottom shell and top shell through setting, and the left and right sides of battery body are fixed through the buffering clamping mechanism, can keep stable in the inside of bottom shell and reduce the vibration when using, the heat that battery body works emits is conducted to the outside of bottom shell and emits through setting heat dissipation structure, reduces battery body temperature, improves stability, when battery body appears leakage damage, battery body expands and emits gas, makes the pressure of inside of bottom shell increase, and the moving plate is affected to move up by pressure intensity, and the telescopic mechanism contracts, and the closing plate moves up, opens the output end of carbon dioxide gas jar, and the gas in the inside of carbon dioxide gas jar is injected into the inside of bottom shell from the left and right sides of top shell, avoids battery body to appear the phenomenon of deflagration, like this reaches through the clamping protection of the four -around battery improves the shock -absorbing effect of battery and injects carbon dioxide gas into the inside of shell when battery appears damage condition, avoids battery to take place deflagration, improves user's disposal reaction time, convenient for the user to use's advantage.
[0014] 2. The utility model discloses a buffering air bag and rubber board's cooperation use through buffering air bag to push rubber board and make it with the surface of battery body close adhesion, avoid battery left and right swing, when bottom shell is impacted simultaneously, buffering air bag and rubber board absorb the impact force, reduce the impact force to battery body, improved the protection effect to battery body. DRAWINGS
[0015] Figure 1 It is the structure schematic diagram of the utility model;
[0016] Figure 2 It is the front structure schematic diagram of the utility model;
[0017] Figure 3 It is the left view structure schematic diagram of the utility model;
[0018] Figure 4 It is the back view structure schematic diagram of the utility model.
[0019] In the drawing: 1, bottom shell;2, top shell;3, battery body;4, buffering clamping mechanism;5, heat dissipation mechanism;6, telescopic mechanism;7, moving plate;8, closing plate;9, side box;10, carbon dioxide gas jar;11, buffering air bag;12, rubber board;13, heat absorbing plate;14, even heat plate;15, heat dissipation plate;16, damping rod;17, compression spring;18, EPP foam board;19, calcium silicate board;20, ice and fire plate;21, pressure relief valve. DETAILED DESCRIPTION
[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0021] As shown in Figures 1 to 4 The utility model provides a kind of explosion-proof shell for lithium ion battery, including bottom shell 1, the top of bottom shell 1 is fixedly connected with top shell 2, the inside of bottom shell 1 is provided with battery body 3, the left and right sides of bottom shell 1 inner wall are all provided with buffer clamping mechanism 4, the inside of buffer clamping mechanism 4 is attached with the surface of battery body 3, the left and right sides of bottom shell 1 inner wall are all provided with heat dissipation mechanism 5, the inside of heat dissipation mechanism 5 is attached with the surface of battery body 3, the top of top shell 2 inner wall four corners is fixedly connected with telescopic mechanism 6, the bottom of telescopic mechanism 6 is fixedly connected with moving plate 7, the left and right sides of moving plate 7 are all fixedly connected with closed plate 8, and the outside of two closed plate 8 is all slidably connected with the inner wall of top shell 2, the left and right sides of bottom shell 1 are all fixedly connected with side box 9, the inside of side box 9 is fixedly connected with carbon dioxide gas tank 10, the output end of carbon dioxide gas tank 10 is penetrated to the inside of top shell 2 and is attached with the outside of closed plate 8, the left and right sides of battery body 3 top are all provided with terminal, the top of terminal is penetrated to the top of top shell 2, the surface of terminal is slidably connected with sealing piston, the surface of sealing piston is fixedly connected with the inner wall of moving plate 7.
[0022] As shown in Figure 2 Buffer clamping mechanism 4 includes buffer air bag 11 fixedly connected on the left and right sides of the inner wall of bottom shell 1, the inside of buffer air bag 11 is fixedly connected with rubber plate 12, the inside of rubber plate 12 is attached with the surface of battery body 3.
[0023] As a technical optimization scheme of the utility model, by setting buffer air bag 11 and rubber plate 12, buffer air bag 11 is used to push rubber plate 12 to make it closely attached with the surface of battery body 3, to avoid battery shaking, and when bottom shell 1 is impacted, buffer air bag 11 and rubber plate 12 absorb impact force, reduce the impact force on battery body 3, and improve the protection effect on battery body 3.
[0024] As shown in Figure 3 Heat dissipation mechanism 5 includes heat absorption plate 13 attached on the left and right sides of battery body 3, the outside of heat absorption plate 13 is fixedly connected with several even-distributed heat plates 14, the outer end of heat plate 14 is penetrated to the outside of bottom shell 1 and is fixedly connected with heat dissipation plate 15.
[0025] As a technical optimization scheme of the utility model, through the cooperation of the heat absorbing plate 13, the heat equalizing plate 14 and the heat radiating plate 15, the heat absorbing plate 13 is used to absorb the heat emitted by the battery body 3 during use and transmit the heat to the heat equalizing plate 14, the heat equalizing plate 14 transmits the heat to the heat radiating plate 15, and the heat radiating plate 15 radiates the heat, effectively reducing the temperature inside the bottom shell 1 and improving the stability of the battery body 3.
[0026] Reference Figure 2 The telescopic mechanism 6 comprises a damping rod 16 fixedly connected to the top of the inner wall of the top shell 2, the bottom end of the damping rod 16 is fixedly connected to the top of the moving plate 7, the surface of the damping rod 16 is sleeved with a compression spring 17, the top end of the compression spring 17 is fixedly connected to the top of the inner wall of the top shell 2, and the bottom end of the compression spring 17 is fixedly connected to the top of the moving plate 7.
[0027] As a technical optimization scheme of the utility model, when the battery body 3 is damaged and the internal pressure of the bottom shell 1 increases and the moving plate 7 moves upward, the damping rod 16 and the compression spring 17 are retracted, and in normal use, the damping rod 16 and the compression spring 17 push the moving plate 7 to be located below the inside of the top shell 2, so that the sealing plate 8 can seal the output end of the carbon dioxide gas tank 10, and the offset of the moving plate 7 in the normal case is avoided, and the use is affected.
[0028] Reference Figure 2 The bottom of the inner wall of the bottom shell 1 is fixedly connected with an EPP foam plate 18, the top of the EPP foam plate 18 is fixedly connected with a calcium-silicon plate 19, the top of the calcium-silicon plate 19 is fixedly connected with an ice and fire plate 20, and the top of the ice and fire plate 20 is attached to the bottom of the battery body 3.
[0029] As a technical optimization scheme of the utility model, the EPP foam plate 18 has good elasticity, can effectively absorb shock waves, reduce noise and vibration caused by vibration, has the characteristics of flame retardation, anti-static, environmental protection and high strength, the calcium-silicon plate 19 is made of calcium silicate as the main raw material and has good fireproof performance, the ice and fire plate 20 is made of special base material and truly achieves non-combustion, reaches the highest level of fireproof non-combustion A level, and the plate material will not burn and produce toxic smoke in case of fire, effectively protects the bottom of the battery body 3, reduces the impact force and improves the fireproof effect.
[0030] Reference Figure 2 The left and right sides of the top of the moving plate 7 are communicated with pressure relief valves 21, and the left and right sides of the top of the top shell 2 are provided with exhaust holes.
[0031] As a technical optimization scheme of the utility model, when the battery body 3 appears damage, the carbon dioxide gas tank 10 sprays gas, the inside pressure of bottom shell 1 is further improved, after the carbon dioxide gas fills the inside of bottom shell 1, the excess gas is discharged from pressure relief valve 21 and exhaust hole, avoiding the case of bottom shell 1 burst.
[0032] The utility model discloses a working principle and use flow: through setting up the battery body 3 is set in the inside of bottom shell 1 and top shell 2, through the buffer clamping mechanism 4 is fixed to the left and right sides of battery body 3 clamping, make it can keep stable in the inside of bottom shell 1 and reduce the vibration when using, through setting up the heat dissipation structure, the heat that battery body 3 works emits is conducted to the outside of bottom shell 1 and emits, reduces battery body 3 temperature, improves stability, when battery body 3 appears leakage damage, battery body 3 expands and emits gas, the inside pressure of bottom shell 1 increases, moving plate 7 is affected by pressure and moves up, telescopic mechanism 6 contracts, closing plate 8 moves up, opens the output end of carbon dioxide gas tank 10, the gas in the inside of carbon dioxide gas tank 10 is injected into the inside of bottom shell 1 from the left and right sides of top shell 2, avoids battery body 3 and appears the phenomenon of deflagration, by this means reaches through the clamping protection of the four -around battery improves battery shock -absorbing effect of preventing impact, and when battery appears damage, injects carbon dioxide gas into the inside of shell, avoids battery and deflagrates, improves user disposal reaction time, and the advantage that the user uses is convenient.
[0033] It should be noted that in this document, relationship terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An explosion-proof housing for a lithium-ion battery, comprising a bottom housing (1), characterized in that: The top of the bottom shell (1) is fixedly connected with a top shell (2), the inside of the bottom shell (1) is provided with a battery body (3), the left and right sides of the inner wall of the bottom shell (1) are provided with buffer clamping mechanisms (4), the inside of the buffer clamping mechanism (4) is attached to the surface of the battery body (3), the left and right sides of the inner wall of the bottom shell (1) are provided with heat dissipation mechanisms (5), the inside of the heat dissipation mechanism (5) is attached to the surface of the battery body (3), the top of the inner wall of the top shell (2) is fixedly connected with telescopic mechanisms (6) at four corners, the bottom of the telescopic mechanism (6) is fixedly connected with a moving plate (7), the left and right sides of the moving plate (7) are fixedly connected with closed plates (8), and the outer sides of the two closed plates (8) are slidably connected with the inner wall of the top shell (2), the left and right sides of the bottom shell (1) are fixedly connected with side boxes (9), the inside of the side box (9) is fixedly connected with a carbon dioxide gas tank (10), and the output end of the carbon dioxide gas tank (10) penetrates into the inside of the top shell (2) and is attached to the outer side of the closed plate (8).
2. The explosion-proof housing for a lithium-ion battery of claim 1, wherein: The buffer clamping mechanism (4) comprises a buffer air bag (11) fixedly connected to the left and right sides of the inner wall of the bottom shell (1), and the inside of the buffer air bag (11) is fixedly connected with a rubber plate (12), and the inside of the rubber plate (12) is attached to the surface of the battery body (3).
3. The explosion-proof housing for a lithium-ion battery of claim 1, wherein: The heat dissipation mechanism (5) comprises heat absorption plates (13) attached to the front and rear sides of the battery body (3), a plurality of evenly distributed heat evenly plates (14) are fixedly connected to the outer side of the heat absorption plate (13), and the outer end of the heat evenly plate (14) penetrates to the outside of the bottom shell (1) and is fixedly connected with a heat dissipation plate (15).
4. The explosion-proof housing for a lithium-ion battery of claim 1, wherein: The telescopic mechanism (6) comprises a damping rod (16) fixedly connected to the top of the inner wall of the top shell (2) at four corners, the bottom end of the damping rod (16) is fixedly connected with the top of the moving plate (7), the surface of the damping rod (16) is sleeved with a compression spring (17), the top end of the compression spring (17) is fixedly connected with the top of the inner wall of the top shell (2), and the bottom end of the compression spring (17) is fixedly connected with the top of the moving plate (7).
5. The explosion-proof housing for a lithium-ion battery of claim 1, wherein: The bottom of the inner wall of the bottom shell (1) is fixedly connected with an EPP foam plate (18), the top of the EPP foam plate (18) is fixedly connected with a calcium silicate plate (19), the top of the calcium silicate plate (19) is fixedly connected with an ice and fire plate (20), and the top of the ice and fire plate (20) is attached to the bottom of the battery body (3).
6. The explosion-proof housing for a lithium-ion battery of claim 1, wherein: The left and right sides of the top of the moving plate (7) are communicated with pressure relief valves (21), and the left and right sides of the top of the top shell (2) are provided with exhaust holes.