High-temperature-resistant power battery cover plate

Abstract

The utility model relates to battery cover plate technical field, and disclose a kind of high-temperature-resistant power battery cover plate, isolation component includes arc shell, collection groove body, the fixed block of two quantities and connecting frame, arc shell is set at the top center of cover plate body and is located above groove, collection groove body is fixedly connected to the outside of arc shell, two fixed blocks are fixedly connected to the both ends of collection groove body, and connecting frame is fixedly connected to the bottom of arc shell;By heat insulating board installation above cover plate body, the high-temperature substance that other battery sprays can be isolated, while for the high-temperature substance that sprays above explosion-proof valve, high-temperature substance will fall above arc shell, because the setting of arc shell arc, so that high-temperature substance slides to the inside of collection groove body, to isolate high-temperature substance, make it away from the top of explosion-proof valve, avoid high-temperature substance to cause influence to explosion-proof valve, prevent the situation of thermal runaway of battery.

Description

Technical Field

[0001] This utility model relates to the field of battery cover technology, specifically a high-temperature resistant power battery cover. Background Technology

[0002] A power battery is a power source that provides power to tools, primarily referring to the batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are characterized by their ultra-long lifespan, safe operation, high-current 2C fast charging and discharging capability, high temperature resistance, large capacity, no memory effect, small size, and light weight. They mainly include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. They differ from starter batteries used in automobile engines, primarily employing valve-sealed lead-acid batteries, open-type tubular lead-acid batteries, and lithium iron phosphate batteries.

[0003] Traditional power battery packs are usually composed of multiple batteries connected in series and parallel. When one battery in the pack experiences thermal runaway, the high-temperature material emitted by that battery will affect other batteries, causing them to also experience thermal runaway, which in turn leads to thermal runaway of the entire battery pack. In severe cases, this can cause fires. To address this issue, a high-temperature resistant power battery cover is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a high-temperature resistant power battery cover to solve the problem mentioned in the background art that traditional power battery packs are usually composed of multiple batteries connected in series and parallel. When one battery in the battery pack heats up and runs away, the high-temperature substances emitted by that battery will affect other batteries, causing other batteries to also run away, and then causing the entire battery pack to run away, which may even cause fires.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant power battery cover, comprising...

[0006] The cover plate body has a groove, an explosion-proof valve is installed inside the groove, an isolation component is installed at the top center of the cover plate body, and a high-temperature resistant component is installed on the top of the cover plate body outside the isolation component.

[0007] The isolation assembly includes an arc-shaped shell, a collection tank, two fixing blocks, and a connecting frame. The arc-shaped shell is located at the top center of the cover plate body and above the groove. The collection tank is fixedly connected to the outside of the arc-shaped shell. The two fixing blocks are fixedly connected to both ends of the collection tank, and the connecting frame is fixedly connected to the bottom of the arc-shaped shell.

[0008] Preferably, the high-temperature resistant component mentioned above includes a heat insulation plate, which is disposed on the top of the cover plate body. A through groove is provided at the center of the heat insulation plate, and a limiting groove is provided at both ends of the through groove.

[0009] Preferably, the top two ends of the cover plate body are respectively provided with a positive electrode post and a negative electrode post, and the heat insulation plate is sleeved on the outside of the positive electrode post and the negative electrode post.

[0010] Preferably, the two fixing blocks mentioned above are matched with the two limiting grooves, and the fixing blocks are engaged inside the limiting grooves.

[0011] Preferably, the collection tank and the through groove are matched, and the collection tank extends through the interior of the through groove.

[0012] Preferably, the heat insulation board has through holes, and the bottom of the heat insulation board has an annular groove outside the through holes.

[0013] Preferably, a battery casing is installed at the bottom of the cover plate body described above.

[0014] Preferably, the connecting frame described above matches the groove, and the connecting frame is inserted into the inside of the groove.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] This invention uses a heat insulation plate installed above the cover plate to isolate high-temperature substances sprayed from other batteries. Simultaneously, high-temperature substances sprayed above the explosion-proof valve will fall onto the arc-shaped shell. Due to the arc shape of the shell, the high-temperature substances slide into the collection tank, thus isolating them and keeping them away from the top of the explosion-proof valve. This prevents the high-temperature substances from affecting the explosion-proof valve, prevents thermal runaway of the battery, and improves the safety of battery use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the arc-shaped shell structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the heat insulation board of this utility model;

[0022] Figure 5 This is a schematic diagram of the cover plate body structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Cover plate body; 2. Positive electrode post; 3. Negative electrode post; 4. Groove; 5. Explosion-proof valve; 6. Battery housing; 7. Arc-shaped housing; 8. Collection tank; 9. Fixing block; 10. Connecting frame; 11. Heat insulation plate; 12. Through groove; 13. Limiting groove; 14. Through hole; 15. Annular groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] Example

[0027] Please see Figure 1-5 This utility model provides a technical solution: a high-temperature resistant power battery cover, including a cover body 1, a groove 4 on the cover body 1, an explosion-proof valve 5 inside the groove 4, an isolation component at the top center of the cover body 1 for isolating high-temperature substances sprayed from other batteries, and a high-temperature resistant component on the top of the cover body 1 outside the isolation component, the high-temperature resistant component providing protection for the cover body 1.

[0028] To prevent thermal runaway of the battery's explosion-proof valve 5 due to high-temperature substances and improve battery safety, the isolation assembly includes an arc-shaped housing 7, a collection tank 8, two fixing blocks 9, and a connecting frame 10. The arc-shaped housing 7 is located at the top center of the cover body 1 and above the groove 4. The collection tank 8 is fixedly connected to the outside of the arc-shaped housing 7. The two fixing blocks 9 are fixedly connected to both ends of the collection tank 8, and the connecting frame 10 is fixedly connected to the bottom of the arc-shaped housing 7. The connecting frame 10 matches the groove 4 and is inserted into the inside of the groove 4. The gap between the connecting frame 10 and the groove 4 is reserved for thermal expansion. For high-temperature substances sprayed above the explosion-proof valve 5, the high-temperature substances will fall onto the arc-shaped housing 7. Due to the arc shape of the arc-shaped housing 7, the high-temperature substances slide into the inside of the collection tank 8, thereby isolating the high-temperature substances and keeping them away from the top of the explosion-proof valve 5, preventing the high-temperature substances from affecting the explosion-proof valve 5.

[0029] To improve the high-temperature resistance of the cover plate body 1, the high-temperature resistant component includes a heat insulation plate 11, which is located on the top of the cover plate body 1. A through groove 12 is formed in the center of the heat insulation plate 11. A collection groove 8 is matched with the through groove 12 and passes through the interior of the through groove 12. Limiting grooves 13 are formed at both ends of the through groove 12. Two fixing blocks 9 are matched with the two limiting grooves 13 and are snapped into the interior of the limiting grooves 13. By installing the heat insulation plate 11 above the cover plate body 1, it can isolate high-temperature substances sprayed from other batteries, prevent high-temperature substances from causing battery temperature runaway, and provide protection for the battery. This makes the cover plate body 1 have a high-temperature resistance effect, thereby reducing the probability of battery thermal runaway. The heat insulation plate 11 can be made of alumina ceramic with a temperature resistance of ≥800℃.

[0030] When the internal pressure of the battery rises abnormally and is released through the explosion-proof valve 5, the arc-shaped housing 7 is pressed inside the through groove 12 and moves upward. At this time, the arc-shaped housing 7 drives the fixing block 9 to disengage from the inside of the limiting groove 13, ensuring that the high pressure and high temperature accumulated inside the battery can be released normally and preventing the battery from exploding.

[0031] The top two ends of the cover plate body 1 are respectively provided with positive terminal post 2 and negative terminal post 3. The positive terminal post 2 and negative terminal post 3 are used for series and parallel installation of multiple batteries. The heat insulation plate 11 is sleeved on the outside of the positive terminal post 2 and negative terminal post 3. The heat insulation plate 11 has a through hole 14. The bottom of the heat insulation plate 11 is located outside the through hole 14 and has an annular groove 15. The annular groove 15 is used to install heat insulation components. The bottom of the cover plate body 1 is equipped with a battery housing 6. The battery housing 6 is used to install the battery cells.

[0032] The working principle or structural principle is that the heat insulation plate 11 is installed above the cover plate body 1, which can isolate the high-temperature substances sprayed by other batteries, prevent the high-temperature substances from causing battery temperature runaway, and provide protection for the battery. This makes the cover plate body 1 resistant to high temperatures, thereby reducing the probability of battery thermal runaway. At the same time, for the high-temperature substances sprayed above the explosion-proof valve 5, the high-temperature substances will fall above the arc-shaped shell 7. Due to the arc-shaped design of the arc-shaped shell 7, the high-temperature substances slide into the inside of the collection tank 8, thereby isolating the high-temperature substances and keeping them away from the top of the explosion-proof valve 5, preventing the high-temperature substances from affecting the explosion-proof valve 5, preventing the battery from thermal runaway, and improving the safety of battery use.

[0033] When the internal pressure of the battery rises abnormally and is released through the explosion-proof valve 5, the arc-shaped housing 7 is pressed inside the through groove 12 and moves upward. At this time, the arc-shaped housing 7 drives the fixing block 9 to disengage from the inside of the limiting groove 13, ensuring that the high pressure and high temperature accumulated inside the battery can be released normally and preventing the battery from exploding.

[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the components described above are not limited to the various specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0035] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature-resistant power battery cover plate, characterized in that, include The cover plate body (1) has a groove (4) provided on it. An explosion-proof valve (5) is provided inside the groove (4). An isolation component is provided at the top center of the cover plate body (1). A high-temperature resistant component is provided on the top of the cover plate body (1) outside the isolation component. The isolation assembly includes an arc-shaped shell (7), a collection tank (8), two fixing blocks (9) and a connecting frame (10). The arc-shaped shell (7) is located at the top center of the cover plate body (1) and above the groove (4). The collection tank (8) is fixedly connected to the outside of the arc-shaped shell (7). The two fixing blocks (9) are fixedly connected to both ends of the collection tank (8) respectively. The connecting frame (10) is fixedly connected to the bottom of the arc-shaped shell (7).

2. The high-temperature-resistant power battery cover plate according to claim 1, characterized in that, The high-temperature resistant component includes a heat insulation plate (11), which is disposed on the top of the cover plate body (1). A through groove (12) is provided at the center of the heat insulation plate (11), and a limiting groove (13) is provided at both ends of the through groove (12).

3. The high-temperature-resistant power battery cover plate according to claim 2, characterized in that, The top two ends of the cover plate body (1) are respectively provided with a positive electrode post (2) and a negative electrode post (3), and the heat insulation plate (11) is sleeved on the outside of the positive electrode post (2) and the negative electrode post (3).

4. The high-temperature-resistant power battery cover plate according to claim 2, characterized in that, The two fixing blocks (9) are matched with the two limiting grooves (13), and the fixing blocks (9) are engaged inside the limiting grooves (13).

5. The high-temperature-resistant power battery cover plate according to claim 2, characterized in that, The collecting trough (8) is matched with the through trough (12), and the collecting trough (8) extends through the interior of the through trough (12).

6. The high-temperature-resistant power battery cover plate according to claim 2, characterized in that, The heat insulation plate (11) has a through hole (14), and the bottom of the heat insulation plate (11) has an annular groove (15) outside the through hole (14).

7. The high-temperature-resistant power battery cover plate according to claim 1, characterized in that, A battery casing (6) is installed at the bottom of the cover body (1).

8. The high-temperature-resistant power battery cover plate according to claim 1, characterized in that, The connecting frame (10) matches the groove (4), and the connecting frame (10) is inserted into the inside of the groove (4).

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