Battery module box body with anti-explosion valve structure

Abstract

The invention belongs to the technical field of battery module box bodies, and provides a battery module box body with an anti-explosion valve structure, which comprises a module box body, a box body top cover is mounted on the back of the module box body through a hinge, a separation frame is fixedly mounted in the module box body, a mounting plate is fixedly mounted at the bottom of the box body top cover, and an anti-explosion valve is mounted in the middle of the bottom of the mounting plate; an air bag cushion is fixedly arranged on the periphery of the bottom of the mounting plate, a plurality of guide blocks are fixedly arranged at the left end and the right end of the bottom of the air bag cushion, and a honeycomb plate is slidably arranged in the separation frame; the battery module has the beneficial effects that safety is achieved, specifically, the safety of the battery module is jointly improved through the design of the anti-explosion valve, the airbag cushion, the guide block and the like, the anti-explosion valve releases internal pressure under the extreme condition, the airbag cushion and the guide block relieve external impact, and it is ensured that the battery module can be prevented from being seriously damaged even if the battery module is abnormal.

Description

Technical Field

[0001] The invention belongs to the technical field of battery module boxes and provides a battery module box with an explosion-proof valve structure. Background Art

[0002] The battery module case is an important shell in the battery pack system used to wrap and protect battery cells or battery modules. It not only needs to carry the battery cells and ensure safe and reliable connections, but also needs to protect the battery from the external environment and meet a series of functional requirements such as heat dissipation, electrical connection, and mechanical strength. Battery module cases are usually used in electric vehicles, energy storage systems, portable devices and other fields.

[0003] After a lot of searching, we found a patent publication number CN210866331U for an explosion-proof valve installation tool for a battery pack box. The battery pack box is provided with a through hole for installing the explosion-proof valve, and is also provided with a joint protruding outward. The explosion-proof valve includes a valve body and a threaded sleeve. The head of the valve body is a regular hexagon and printed with a logo. The tail of the valve body passes through the through hole and is fixed to the battery pack box by a threaded sleeve. The tool includes an integrally formed limit plate and a fixed groove. The center of the limit plate is provided with a regular hexagonal hole matching the outer dimensions of the valve body head of the explosion-proof valve. The outer dimensions of the fixed groove match the outer protruding joint, and are used to fix with the battery pack box. The present invention can meet the requirements of the logo orientation on the explosion-proof valve when manually installing the explosion-proof valve, ensure the installation effect, and is easy to operate and use, can be repeatedly used, and saves resource consumption while ensuring the installation quality; however, the existing battery module box still has the following problems: The battery module box needs to effectively and stably fix multiple single-cell batteries together to ensure that the batteries will not be displaced or damaged during use. There are currently two common fixing methods: bolt fixing and snap-fit ​​design. Although these two methods are common, they have certain limitations and shortcomings in practical applications. The method of fixing one by one with bolts is indeed very cumbersome, especially when the number of batteries is large. The process is complicated and consumes a lot of time and labor costs. Although the snap-fit ​​structure can fix the battery more easily, there will be a fitting gap, resulting in insufficient stability of the battery in the box, especially in the case of vibration, impact or thermal expansion, the battery is prone to displacement. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and solve the problem that the existing battery module box is insufficient for arranging and installing multiple single-core batteries.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a battery module box with an explosion-proof valve structure, comprising a module box, a box top cover is installed on the back of the module box through a hinge, and a partition frame is fixed inside the module box; A mounting plate is fixedly mounted at the bottom of the box top cover, an explosion-proof valve is installed in the middle of the bottom of the mounting plate, an airbag cushion is fixedly mounted around the bottom of the mounting plate, and a plurality of guide blocks are fixedly mounted at both left and right ends of the bottom of the airbag cushion; A honeycomb panel is slidably installed inside the partition frame, and ventilation nets are installed at both left and right ends of the module box.

[0006] In a preferred technical solution of the present invention, the left and right ends of the right side of the module box are fixed with card slots, and the left and right ends of the right side of the box top cover are fixed with buckles that match the card slots.

[0007] In a preferred technical solution of the present invention, the top end of the explosion-proof valve passes through the mounting plate and extends to the middle position of the top end of the module box.

[0008] In a preferred technical solution of the present invention, the thickness of the four airbag cushions is greater than the height of the explosion-proof valve, and the four airbag cushions are vertically arranged toward the module box.

[0009] In a preferred technical solution of the present invention, the plurality of guide blocks are symmetrically arranged with the middle of the bottom of the airbag cushion as the center, and the diameters of the plurality of guide blocks gradually decrease from the outside to the inside.

[0010] In a preferred technical solution of the present invention, the two ventilation nets are respectively connected to the left and right ends of the partition frame.

[0011] In a preferred technical solution of the present invention, the partition frame is arranged in a cross shape, and the partition frame and the four airbag cushions are arranged in a staggered manner.

[0012] Compared with the prior art, the present invention has the following beneficial effects: Safety: The explosion-proof valve, airbag cushion and guide block design jointly improve the safety of the battery module. The explosion-proof valve releases internal pressure in extreme cases, and the airbag cushion and guide block mitigate external impact, ensuring that the battery module can avoid serious damage even in abnormal situations; Stability: Structures such as the partition frame and airbag cushion ensure stable installation of the battery module, prevent internal displacement or pressure concentration, and improve the anti-interference ability of the overall structure; Heat dissipation performance: Honeycomb panels, ventilation nets and reasonable box design effectively improve the heat dissipation capacity of the battery module, keep the battery within a safe temperature range, avoid overheating damage, and ensure efficient operation of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall structural effect diagram of the module box of the present invention; Figure 2 This is a structural effect diagram of the split state of the partition frame of the present invention; Figure 3This is an overall structural effect diagram of the mounting plate of the present invention.

[0014] In the figure: 1. module box; 2. box top cover; 3. partition frame; 4. honeycomb panel; 5. mounting plate; 6. airbag cushion; 7. explosion-proof valve; 8. guide block; 9. ventilation net. DETAILED DESCRIPTION

[0015] See also Figure 1-3 The present invention provides a technical solution: a battery module box with an explosion-proof valve structure, comprising a module box 1, a box top cover 2 is installed on the back of the module box 1 through a hinge, a card slot is fixedly installed on the left and right ends of the right side of the module box 1, and a card buckle adapted to the card slot is fixedly installed on the left and right ends of the right side of the box top cover 2. The card slot and the card buckle are adapted to ensure that the top of the box is firmly connected to the bottom during installation and disassembly. This design can provide higher convenience and fixing strength during operation, and avoid loosening or vibration during transportation or use. A partition frame 3 is fixedly installed inside the module box 1, and the box A mounting plate 5 is fixedly mounted at the bottom of the top cover 2, an explosion-proof valve 7 is installed in the middle of the bottom of the mounting plate 5, airbag cushions 6 are fixedly mounted around the bottom of the mounting plate 5, a number of guide blocks 8 are fixedly mounted at the left and right ends of the bottom of the airbag cushion 6, a honeycomb panel 4 is slidably mounted inside the partition frame 3, ventilation nets 9 are installed at the left and right ends of the module box 1, and ventilation nets 9 are arranged on both sides of the module box 1, which helps air circulation and ensures that the battery is well cooled during use. The ventilation nets 9 are connected to both ends of the partition frame 3, which further enhances the air circulation inside the module box 1 and helps to evenly distribute the battery temperature.

[0016] The partition frame 3 is arranged in a cross shape, and a honeycomb panel 4 is slidably installed inside. This design provides good structural strength. At the same time, the honeycomb panel 4 also contributes to heat dissipation in structure to prevent the battery from being damaged due to overheating. The partition frame 3 and the airbag cushion 6 are staggered to ensure that the airbag cushion 6 will not be blocked by the partition frame 3, thereby effectively exerting its buffering effect.

[0017] The thickness of the four airbag cushions 6 is greater than the height of the explosion-proof valve 7, and the four airbag cushions 6 are all arranged vertically in the direction of the module box 1. The main function of the airbag cushions 6 is to provide buffering and shockproof effects to reduce the vibration of the battery in the box. The thickness of the airbag cushions 6 is greater than the height of the explosion-proof valve 7, and the airbag cushions 6 are arranged vertically in the direction of the module box 1, which can play a certain isolation role when the internal pressure changes, thereby ensuring the stability and effectiveness of the explosion-proof valve 7.

[0018] The top of the explosion-proof valve 7 passes through the mounting plate 5 and extends to the middle position of the top of the module box 1. It can quickly exhaust the gas when the battery is over-pressurized or abnormally expanded to prevent the box from exploding or rupturing due to excessive internal pressure. The top of the explosion-proof valve passes through the mounting plate and extends to the top of the module box, which enhances the sealing and exhaust functions of the valve.

[0019] Several guide blocks 8 are symmetrically arranged with the middle of the bottom of the airbag cushion 6 as the center. The diameters of the several guide blocks 8 gradually decrease from the outside to the inside. The guide blocks 8 are installed at the left and right ends of the bottom of the airbag cushion 6, and the diameters gradually decrease from the outside to the inside. The design of this symmetrical guide structure can ensure that the airbag cushion 6 is evenly distributed when subjected to force, thereby preventing unnecessary displacement of the battery in the box.

[0020] Working principle: First, the top cover 2 of the box body is connected to the module box body 1 through a hinge, which can be easily opened and closed. Then, the partition frame 3 divides the interior of the battery module into multiple areas to ensure that the battery module can maintain a good spatial structure, and the honeycomb panel 4 is slidably installed in the partition frame 3, which helps to improve the thermal management ability of the battery module and promote heat dissipation. At the same time, during the use of the battery module, the airbag cushion 6 can reduce the impact of external vibration on the battery module and provide a certain buffering effect to prevent the battery module from being damaged in the event of a collision or pressure fluctuation. The guide block 8 is installed at the bottom of the airbag cushion 6 to ensure that the airbag cushion 6 is evenly distributed when under pressure to prevent damage caused by excessive local pressure. The diameter of several guide blocks 8 gradually decreases from the outside to the inside. The design of this symmetrical guide structure can ensure that the airbag cushion 6 is evenly stressed when squeezing the battery to prevent the battery from unnecessary displacement in the box. Finally, the ventilation net 9 is installed on both sides of the module box 1 to strengthen the air circulation of the honeycomb panel 4 in the battery module box, promote the discharge of hot air, and reduce the battery performance attenuation or damage caused by excessive temperature. It provides a more stable working environment for the battery module.

Claims

1. A battery module box with an explosion-proof valve structure, comprising a module box (1), characterized in that: The module box (1) has a box top cover (2) mounted on the back thereof via a hinge, and a partition frame (3) is fixedly mounted inside the module box (1); A mounting plate (5) is fixedly mounted on the bottom of the box top cover (2), an explosion-proof valve (7) is mounted in the middle of the bottom of the mounting plate (5), an airbag cushion (6) is fixedly mounted around the bottom of the mounting plate (5), and a plurality of guide blocks (8) are fixedly mounted on both left and right ends of the bottom of the airbag cushion (6); A honeycomb panel (4) is slidably mounted inside the partition frame (3), and ventilation nets (9) are mounted on both left and right ends of the module box (1).

2. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The module box body (1) is fixedly provided with card slots at both left and right ends of the right side, and the box body top cover (2) is fixedly provided with buckles adapted to the card slots at both left and right ends of the right side.

3. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The top end of the explosion-proof valve (7) passes through the mounting plate (5) and extends to the middle position of the top end of the module box (1).

4. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The thickness of the four airbag cushions (6) is greater than the height of the explosion-proof valve (7), and the four airbag cushions (6) are vertically arranged in the direction of the module box (1).

5. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The plurality of guide blocks (8) are symmetrically arranged with the middle of the bottom of the airbag cushion (6) as the center, and the diameters of the plurality of guide blocks (8) gradually decrease from the outside to the inside.

6. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The two ventilation nets (9) are respectively connected to the left and right ends of the partition frame (3).

7. A battery module box with an explosion-proof valve structure as claimed in claim 1, characterized in that: The partition frame (3) is arranged in a cross shape, and the partition frame (3) and the four airbag cushions (6) are arranged in a staggered manner.

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