Explosion-proof structure for testing square-shell lithium battery
By designing an explosion-proof structure including partition plates, pressure relief mechanisms, etc., the problem of inconvenient separation and poor explosion-proof effect of the explosion-proof structure for square shell lithium battery testing is solved, and the safe separation and effective buffering protection of lithium batteries is achieved.
Patent Information
- Application Number
- CN202411948577.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-28
AI Technical Summary
The existing square shell lithium battery has an explosion-proof structure for testing and is inconvenient to separate and store lithium batteries. The explosion-proof and buffering effects are poor, which increases the risk of damage and explosion of lithium batteries.
An explosion-proof structure including an explosion-proof box, a cover plate, a cooling chamber, a water inlet pipe, a drain pipe, a partition plate, a rubber block, a limit groove and a pressure relief mechanism is designed. Separation and limiting of the partition plate and rubber blocks are used to prevent collision of lithium batteries; the pressure relief mechanism absorbs impact force through the pressure relief spring and rubber ball to achieve buffer protection.
The effective separation and storage of lithium batteries is achieved, which significantly reduces collision and squeezing between batteries, enhances explosion-proof effect, reduces the risk of battery damage and explosion, and keeps the battery dry and safe through sealing and cooling functions.
Smart Images
Figure CN119725964A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of lithium battery explosion-proof testing, and in particular to an explosion-proof structure for testing square-shell lithium batteries. Background Art
[0002] With the rapid development of the new energy vehicle industry, the safety and reliability of lithium batteries as its core components have attracted more and more attention. In particular, as the battery volume increases, the energy density increases, and the use environment becomes more severe, the hidden danger of battery explosion due to damage increases significantly. Therefore, the explosion-proof design of square shell lithium batteries has become an important research field. A lithium battery storage box with announcement number CN218677395U includes a box body, a storage cavity is provided in the box body, a rectangular rubber sealing ring is constructed at the top of the box body, and a dust box cover body sleeved on the rectangular rubber sealing ring is abutted at the top of the box body, snap plates are centrally constructed on both sides of the dust box cover body, snap grooves are centrally opened at the tops of both sides of the box body, and the snap plates are snapped into the snap grooves, arc-shaped positioning plates are constructed at the four corners of the bottom of the box body, arc-shaped positioning grooves adapted to the arc-shaped positioning plates are opened at the four corners of the top of the dust box cover body, and positioning keys are constructed at the four corners of the top of the dust box cover body. The lithium battery storage box has a dustproof storage function, which effectively avoids dust accumulation on the surface of the lithium battery during storage, and also has a positioning and stacking function, and is highly practical. The above-mentioned prior art has a single function when in use. It is inconvenient to separate and store multiple lithium batteries, which makes it easy for the multiple batteries to collide and squeeze each other, increasing the risk of damage and explosion of the lithium batteries. In addition, batteries that are not stored separately may be more confusing to manage and use, increasing the difficulty and time cost of operation. Therefore, corresponding improvements are needed. Summary of the invention
[0003] The purpose of the present invention is to provide an explosion-proof structure for testing square-shell lithium batteries, so as to solve the problem that the existing explosion-proof structure for testing square-shell lithium batteries proposed in the above background technology is inconvenient for separating and storing lithium batteries, and has poor explosion-proof and buffering effects.
[0004] To achieve the above object, the present invention provides the following technical solutions: an explosion-proof structure for testing a square-shell lithium battery, comprising an explosion-proof box and a cover plate, wherein the top of the explosion-proof box is covered with a cover plate; A cooling cavity is arranged inside the explosion-proof box, a water inlet pipe is connected to one side of the explosion-proof box, and one end of the water inlet pipe extends into the cooling cavity, a drain pipe is connected to the other side of the explosion-proof box, and one end of the drain pipe extends into the cooling cavity, one end of the water inlet pipe and the drain pipe are filled with sealing plugs, a blocking plug is arranged at the bottom end of the cover plate, and a pressure relief mechanism is evenly arranged inside the blocking plug.
[0005] Preferably, fixing holes are provided at the four corners of the top of the explosion-proof box, and docking mechanisms are provided inside the fixing holes, one end of the docking mechanisms is connected to the bottom end of the cover plate, and the cover plate is detachably connected to the explosion-proof box through the docking mechanism.
[0006] Preferably, the docking mechanism includes a one-way screw, and the one-way screw is installed inside the fixing hole, one end of the one-way screw extends to the outside of the explosion-proof box and is connected to a rotary handle, the outer side of the one-way screw is threadedly connected to a movable block, and the bottom end of the movable block is slidably connected to the fixing hole through a slider.
[0007] Preferably, a locking buckle is fixed to the top of the movable block, and a positioning hook block is fixed to the bottom end of the cover plate on one side of the locking buckle, and the locking buckle and the positioning hook block are buckled with each other when the cover plate covers the explosion-proof box.
[0008] Preferably, the bottom of the explosion-proof box is evenly provided with limiting grooves with rectangular cross-sections, and partition plates are evenly installed inside the explosion-proof box, and both sides of the partition plates are connected with rubber blocks, and the rubber blocks are made of flexible material.
[0009] Preferably, the pressure relief mechanism comprises a support block, and the support block is installed inside the stopper, the bottom end of the support block is evenly connected with a pressure relief spring, and the bottom of the pressure relief spring is connected with a pressure relief block, the bottom of the pressure relief block is evenly provided with circular extrusion grooves, the extrusion grooves are connected with rubber balls, and the bottom of the rubber balls is connected with a pressure relief chassis; Two rubber folding plates are connected between the supporting block and the pressure reducing block, and the rubber folding plates are in a wave shape.
[0010] Preferably, a top plate is connected to the bottom end of the pressure relief chassis, damping sleeves are provided on both sides of the pressure relief block, and the damping sleeves are connected between the top plate and the stopper.
[0011] Compared with the prior art, the invention has the following beneficial effects: the explosion-proof structure for testing square-shell lithium batteries not only has the effect of explosion-proof and pressure-relief, but also the top shielding plate is firmly installed and can be freely disassembled, effectively protecting the square lithium batteries; During the testing of square-shell lithium batteries, the corresponding square-shell lithium batteries are inserted into the limiting grooves, and multiple partitions and rubber blocks are used for separation and limiting to prevent collision between lithium batteries, reduce physical impact, and protect the battery shell and internal structure from damage. The separation and limiting design can significantly reduce the risk of battery explosion. Then, the cover plate is covered on the top of the explosion-proof box to achieve sealing, prevent external moisture, dust, etc. from entering the battery, keep the battery dry and clean, and make the top plate hold the top of the square-shell lithium battery, further limit the top of the square-shell lithium battery, and enhance the battery protection effect; The top plate and the cover plate are connected by multiple pressure relief mechanisms. When an explosion occurs unexpectedly, the impact force acts on the top plate, pushing the pressure relief chassis upward, and causing multiple rubber balls to squeeze and deform with the pressure relief block, thereby initially alleviating the impact force. When the pressure relief block is further pushed, the pressure relief spring is compressed, and the rubber folding plate is deformed, thereby further absorbing and alleviating the impact force, thereby achieving a buffering protection effect, thereby reducing the loss caused by an accident. Twist the handle to rotate the one-way screw, and the one-way screw and the movable block are threadedly connected, so that the locking buckle moves to one side, so that the locking buckle is separated from the positioning hook block, and the positioning hook block is disengaged from the fixing hole, and the cover plate can be pulled up to separate the cover plate from the explosion-proof box. The operation is convenient, so that the lithium battery can be easily taken in and out. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the pressure relief mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the partition plate of the present invention.
[0014] Explanation of the reference numerals in the figure: 1. explosion-proof box; 101. cooling chamber; 2. water inlet pipe; 3. cover plate; 4. stopper; 5. pressure relief mechanism; 501. support block; 502. pressure relief spring; 503. rubber folding plate; 504. pressure relief block; 505. pressure relief chassis; 506. rubber ball; 507. damping sleeve; 6. fixing hole; 7. docking mechanism; 701. rotary handle; 702. one-way screw; 703. movable block; 704. locking buckle; 705. positioning hook block; 8. partition plate; 801. rubber block; 9. limiting groove; 10. drain pipe; 11. top plate. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] See also Figure 1-Figure 5 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problem that the explosion-proof effect of the existing square shell lithium battery test explosion-proof structure is poor during use, the following technical solution is published. For details, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5, an explosion-proof structure for testing a square-shell lithium battery, comprising an explosion-proof box 1 and a cover plate 3, wherein the top of the explosion-proof box 1 is covered with the cover plate 3; further comprising: a cooling chamber 101 is arranged inside the explosion-proof box 1, a water inlet pipe 2 is connected to one side of the explosion-proof box 1, and one end of the water inlet pipe 2 extends to the inside of the cooling chamber 101, a drain pipe 10 is connected to the other side of the explosion-proof box 1, and one end of the drain pipe 10 extends to the inside of the cooling chamber 101, and one end of the water inlet pipe 2 and the drain pipe 10 are filled with sealing plugs at one end, a stopper 4 is arranged at the bottom end of the cover plate 3, and a pressure relief mechanism 5 is evenly arranged inside the stopper 4, and the pressure relief mechanism 5 comprises a support block 501, and the support block 501 is installed inside the stopper 4, and the bottom end of the support block 501 is evenly connected with a pressure relief device Spring 502, and the bottom of the pressure relief spring 502 is connected to a pressure relief block 504, the bottom of the pressure relief block 504 is evenly provided with a circular extrusion groove, the extrusion groove is connected with a rubber ball 506, and the bottom of the rubber ball 506 is connected to a pressure relief chassis 505; wherein two rubber folding plates 503 are connected between the support block 501 and the pressure relief block 504, and the rubber folding plates 503 are wavy in shape, the bottom of the pressure relief chassis 505 is connected to a top plate 11, damping sleeves 507 are provided on both sides of the pressure relief block 504, and the damping sleeves 507 are connected between the top plate 11 and the stopper 4, and the interior of the explosion-proof box 1 is evenly installed with partition plates 8, and both sides of the partition plates 8 are connected with rubber blocks 801, and the rubber blocks 801 are made of flexible material; When the present embodiment is in use, the corresponding square shell lithium battery is correspondingly inserted into the limiting groove 9, and a plurality of partition plates 8 and rubber blocks 801 are used for separation and limiting, so as to prevent the lithium batteries from colliding with each other, reduce physical impact, and protect the battery shell and internal structure from damage. Then, the cover plate 3 is covered on the top of the explosion-proof box 1 to achieve sealing, prevent external moisture, dust, etc. from entering the battery, and keep the battery dry and clean. Then, the cover plate 3 is covered on the explosion-proof box 1, and the top plate 11 is used to limit the tops of the plurality of lithium batteries to ensure that the lithium batteries are not easily squeezed with each other during the testing process. Then, an appropriate amount of coolant is injected into the cooling chamber 101 through the water inlet pipe 2, so as to use the coolant to cool the explosion-proof box 1 and the inside of the explosion-proof box 1. The square-shell lithium battery is cooled, the temperature of the battery is effectively reduced, and the internal temperature of the battery is prevented from being too high, thereby reducing the risk of thermal runaway of the battery and reducing the safety hazards caused by excessive battery temperature. The top plate 11 and the cover plate 3 are connected by multiple pressure relief mechanisms 5. When an explosion occurs unexpectedly, the impact force acts on the top plate 11, pushing the pressure-relief chassis 505 to move upward, and causing multiple rubber balls 506 to be squeezed and deformed with the pressure-relief block 504, thereby preliminarily reducing the impact force. When the pressure-relief block 504 is further pushed, the pressure-relief spring 502 is compressed, and the rubber folding plate 503 is deformed, thereby further absorbing and reducing the impact force, thereby achieving the effect of buffering protection, so as to reduce the loss caused by an accident.
[0017] Embodiment 2: This embodiment is different from the embodiment 1. By using the setting of the docking mechanism 7, the cover plate 3 can be conveniently disassembled and assembled. Therefore, the following technical solution is published. For details, please refer to Figure 1 , Figure 2 , Figure 3 , fixing holes 6 are provided at the four corners at the top of the explosion-proof box 1, and docking mechanisms 7 are provided inside the fixing holes 6, one end of the docking mechanisms 7 is connected to the bottom end of the cover plate 3, and the cover plate 3 is detachably connected to the explosion-proof box 1 through the docking mechanism 7, the docking mechanism 7 includes a one-way screw rod 702, and the one-way screw rod 702 is installed inside the fixing hole 6, one end of the one-way screw rod 702 extends to the outside of the explosion-proof box 1 and is connected with a rotary handle 701, the outer side of the one-way screw rod 702 is threadedly connected with a movable block 703, and the bottom end of the movable block 703 is slidably connected to the fixing hole 6 through a slider, a locking buckle 704 is fixed to the top of the movable block 703, and a positioning hook block 705 is fixed to the bottom end of the cover plate 3 on one side of the locking buckle 704, when the cover plate 3 covers the explosion-proof box 1, the locking buckle 704 and the positioning hook block 705 are buckled with each other, and a rectangular cross-section limiting groove 9 is evenly opened at the bottom end of the explosion-proof box 1; When the present embodiment is in use, when the cover plate 3 is covered on the explosion-proof box 1, the positioning hook block 705 at the bottom of the cover plate 3 is inserted into the fixing hole 6 accordingly, and then the rotary handle 701 is rotated to drive the one-way screw rod 702 to rotate, and the one-way screw rod 702 and the movable block 703 are threadedly connected, so that the movable block 703 moves horizontally and drives the locking buckle 704 to move synchronously until the locking buckle 704 and the positioning hook block 705 are mutually engaged to ensure the firmness of the cover plate 3. The cover plate 3 can be conveniently disassembled by performing the reverse operation later, so as to facilitate the storage and maintenance of the lithium battery later.
Claims
1. An explosion-proof structure for testing a square-shell lithium battery, comprising an explosion-proof box and a cover plate, wherein the top of the explosion-proof box is covered with a cover plate, characterized in that: Also includes: A cooling cavity is arranged inside the explosion-proof box, a water inlet pipe is connected to one side of the explosion-proof box, and one end of the water inlet pipe extends into the cooling cavity, a drain pipe is connected to the other side of the explosion-proof box, and one end of the drain pipe extends into the cooling cavity, one end of the water inlet pipe and the drain pipe are filled with sealing plugs, a blocking plug is arranged at the bottom end of the cover plate, and a pressure relief mechanism is evenly arranged inside the blocking plug.
2. The explosion-proof structure for testing a square-shell lithium battery according to claim 1, characterized in that: The four corners at the top of the explosion-proof box are all provided with fixing holes, and docking mechanisms are all provided inside the fixing holes. One end of the docking mechanism is connected to the bottom end of the cover plate, and the cover plate is detachably connected to the explosion-proof box through the docking mechanism.
3. The explosion-proof structure for testing a square-shell lithium battery according to claim 2, characterized in that: The docking mechanism includes a one-way screw, and the one-way screw is installed inside the fixing hole. One end of the one-way screw extends to the outside of the explosion-proof box and is connected to a rotary handle. The outer side of the one-way screw is threadedly connected to a movable block, and the bottom end of the movable block is slidably connected to the fixing hole through a slider.
4. The explosion-proof structure for testing a square-shell lithium battery according to claim 3, characterized in that: A locking buckle is fixed on the top of the movable block, and a positioning hook block is fixed on the bottom end of the cover plate on one side of the locking buckle. When the cover plate is covered on the explosion-proof box, the locking buckle and the positioning hook block are buckled with each other.
5. The explosion-proof structure for testing a square-shell lithium battery according to claim 1, characterized in that: Limiting grooves with rectangular cross-sections are evenly opened at the bottom of the explosion-proof box. Partition plates are evenly installed inside the explosion-proof box, and rubber blocks are connected to both sides of the partition plates. The rubber blocks are made of flexible materials.
6. The explosion-proof structure for testing a square-shell lithium battery according to claim 1, characterized in that: The pressure relief mechanism includes a support block, and the support block is installed inside the stopper, the bottom end of the support block is evenly connected with a pressure relief spring, and the bottom of the pressure relief spring is connected with a pressure relief block, and the bottom of the pressure relief block is evenly provided with a circular extrusion groove, and the extrusion groove is connected with a rubber ball, and the bottom of the rubber ball is connected with a pressure relief chassis; Two rubber folding plates are connected between the supporting block and the pressure reducing block, and the rubber folding plates are in a wave shape.
7. The explosion-proof structure for testing a square-shell lithium battery according to claim 6, characterized in that: The bottom end of the pressure relief chassis is connected with a top plate, and damping sleeves are arranged on both sides of the pressure relief block, and the damping sleeves are connected between the top plate and the stopper.