Power battery cover plate for preventing electrolyte leakage

Abstract

The invention discloses a power battery cover plate for preventing electrolyte leakage, and relates to the technical field of power battery cover plates, the power battery cover plate comprises a cover plate body, the top of the cover plate body is provided with an anti-explosion valve, the power battery cover plate is characterized by further comprising a protection damping mechanism and a protection dismounting mechanism, and the protection dismounting mechanism is located on the outer side of the protection damping mechanism; the anti-explosion valve has the advantages that external force impact on the sliding protection ring can be absorbed, accordingly, impact force generated by the external force can be relieved, the anti-explosion valve can be protected, the protection damping mechanism can be protected by buffering the external force, and the service life of the protection damping mechanism can be prolonged; according to the explosion-proof valve provided by the utility model, when the explosion-proof valve releases pressure, the pressure can flow out from the through holes of the protective net cover, and meanwhile, external dust and other substances entering the explosion-proof valve are reduced, so that the failure rate of the power battery is reduced, the service life of the power battery is prolonged, and the protective effect of the cover plate body on the power battery is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery cover plates, and in particular to a power battery cover plate for preventing electrolyte leakage. Background Art

[0002] A power battery refers to a storage battery that can directly or indirectly provide power for electric vehicles and other equipment that requires electric drive. It is the heart of new energy vehicles such as electric vehicles, and is also an important direction for future energy transformation. The power battery cover is an important component of the power battery, with sealing, heat protection, heat dissipation and other functions, used to protect the internal components of the battery.

[0003] When the existing power battery cover is in use, an explosion-proof valve is provided on the power battery cover. The purpose is to release the internal pressure by automatically opening when the internal pressure of the battery rises abnormally, thereby preventing the internal pressure of the battery from being too high and exceeding the bearing capacity of the battery shell, causing the shell to rupture and the electrolyte to leak. When in use, the explosion-proof valve on the power battery cover is often located in a conspicuous position of the power battery cover, and its structure is relatively fragile. During the transportation, installation and use of the battery cover, the explosion-proof valve is easily damaged by external impact or extrusion, thereby losing its due function and affecting its protective sealing effect.

[0004] Therefore, a power battery cover plate for preventing electrolyte leakage is proposed to solve the above problems. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to propose a power battery cover plate for preventing electrolyte leakage, so as to solve the problem that the explosion-proof valve of the battery cover plate is easily damaged in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: a power battery cover plate for preventing electrolyte leakage, comprising a cover plate body, wherein an explosion-proof valve is arranged on the top of the cover plate body, and characterized in that it also comprises: a protective shock absorbing mechanism and a protective disassembly mechanism, wherein the protective disassembly mechanism is located outside the protective shock absorbing mechanism;

[0007] The protective shock-absorbing mechanism is used to mitigate the impact and interference of external forces on the explosion-proof valve, and the protective disassembly mechanism is used to disassemble the protective shock-absorbing mechanism.

[0008] Preferably, the protective shock-absorbing mechanism includes a fixed protective ring, which is arranged on the upper surface of the cover body, and the fixed protective ring is sleeved on the outside of the explosion-proof valve. The top of the fixed protective ring is slidably connected with a sliding protective ring, the inner surface of the sliding protective ring is fixedly connected with a protective mesh cover, and a rubber ring is fixedly connected between the inner walls of the fixed protective ring, and the top of the rubber ring is in contact with the sliding protective ring.

[0009] Preferably, the protective disassembly mechanism includes a toggle block, which is equidistantly fixed to the outer surface of the fixed protective ring, one side of the toggle block is rotatably connected to a torsion spring shaft, the outer surface of the torsion spring shaft is fixedly connected to a claw, and the toggle block is fixedly connected to a push rod and a push rod on the side close to the claw.

[0010] Preferably, a sliding ring is slidably sleeved on the outer surface of the fixed protective ring, a support spring is fixedly connected between the top of the sliding ring and the fixed protective ring, and an L-shaped push column is equidistantly fixedly connected to the bottom of the sliding ring, and the L-shaped push column is in contact with adjacent claws.

[0011] Preferably, an arc-shaped rail is equidistantly fixedly connected to the top of the cover body, the toggle block can be slidably connected to the arc-shaped rail, and a claw groove is provided on the top of the inner wall of the arc-shaped rail.

[0012] Preferably, a guide push column is slidably connected to one side of the arc rail, an arc block is equidistantly fixedly connected to the top of the cover body, the arc block is fixedly connected to the adjacent guide push column, a guide slide column is fixedly connected to one side of the arc block, the guide slide column is slidably connected to one side of the arc rail, and a return spring is fixedly connected between the guide slide column and the arc rail.

[0013] Preferably, an arc groove is provided on the top of the arc block, a clamping rod is equidistantly slidably connected to the top of the cover body, a column is fixedly connected to the bottom of the clamping rod, and the clamping rod is slidably connected to the arc groove via the column.

[0014] Preferably, the claw can be engaged with the claw groove, the outer surface of the fixed protective ring is fixedly connected with rubber convex strips at equal intervals, the claw is arranged obliquely, and the top of the claw is higher than the top of the toggle block.

[0015] Compared with the prior art, the present invention provides a power battery cover plate for preventing electrolyte leakage, which has the following beneficial effects:

[0016] 1. The interference of foreign objects on the explosion-proof valve can be reduced by covering the fixed protection ring, the protection mesh cover and the sliding protection ring. At the same time, if the explosion-proof valve is impacted by external force, the rubber ring can absorb the external force impact on the sliding protection ring, thereby reducing the impact force generated by the external force. It not only protects the explosion-proof valve, but also has a protective effect on the protective shock-absorbing mechanism itself by buffering the external force, thereby improving the service life of the protective shock-absorbing mechanism. In addition, through the setting of the protective mesh cover, when the explosion-proof valve is relieving pressure, the pressure can flow out from the through hole of the protective mesh cover, while reducing the entry of external dust and other substances into the explosion-proof valve, reducing the failure rate of the power battery, thereby extending the service life of the power battery and ensuring the protective effect of the cover body on the power battery;

[0017] 2. Through the cooperation of the toggle block, the arc rail, the claw and the claw groove, the fixed protection ring can complete the protection of the explosion-proof valve by simply rotating it during installation. Compared with the traditional bolt installation, it does not require the use of tools and a large torque during installation, so that even inexperienced workers can easily complete the installation work, saving installation time and improving installation efficiency. At the same time, through the clamping of the claw and the claw groove, and the abutment of the clamping rod and the rubber convex strip, the fixing effect after installation is guaranteed, thereby improving the stability of the protective function of the protective shock-absorbing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the fixed protection ring of the present invention;

[0020] Figure 3 This is a top view of the three-dimensional structure of the protective net cover of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the outer side of the fixed protection ring of the present invention;

[0022] Figure 5 For the present invention Figure 4 The structure diagram at A is enlarged;

[0023] Figure 6 For the present invention Figure 4 The structure diagram at B is enlarged;

[0024] Figure 7 This is a cross-sectional structural diagram of the arc rail of the present invention;

[0025] Figure 8 This is a cross-sectional structural diagram of the toggle block of the present invention.

[0026] In the figure:

[0027] 1. Cover plate body; 2. Explosion-proof valve;

[0028] 301, fixed protection ring; 302, sliding protection ring; 303, protection net cover; 304, rubber ring;

[0029] 401, toggle block; 402, torsion spring shaft; 403, claw; 404, push rod; 405, push rod; 406, L-shaped push column; 407, sliding ring; 408, support spring; 409, arc rail; 410, claw groove; 411, guide push column; 412, arc block; 413, guide slide column; 414, return spring; 415, arc groove; 416, clamping rod; 417, rubber convex strip. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0031] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0032] Embodiments of the present invention

[0033] Please refer to Figures 1 to 8 As shown:

[0034] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a power battery cover plate for preventing electrolyte leakage, including a cover plate body 1, an explosion-proof valve 2 is arranged on the top of the cover plate body 1, and also includes: a protective shock absorbing mechanism and a protective disassembly mechanism, and the protective disassembly mechanism is located outside the protective shock absorbing mechanism;

[0035] The protective shock absorbing mechanism is used to mitigate the impact and interference of external forces on the explosion-proof valve 2, and the protective disassembly mechanism is used to disassemble the protective shock absorbing mechanism;

[0036] The protective shock absorbing mechanism comprises a fixed protective ring 301, which is arranged on the upper surface of the cover body 1, and is sleeved on the outer side of the explosion-proof valve 2. A sliding protective ring 302 is slidably connected to the top of the fixed protective ring 301, and a protective mesh cover 303 is fixedly connected to the inner surface of the sliding protective ring 302. A rubber ring 304 is fixedly connected between the inner walls of the fixed protective ring 301, and the top of the rubber ring 304 abuts against the sliding protective ring 302.

[0037] In the prior art, the explosion-proof valve 2 on the power battery cover is often located in a conspicuous position of the power battery cover when in use, and its structure is relatively fragile. During the transportation, installation and use of the battery cover, the explosion-proof valve 2 is easily damaged by the impact or extrusion of external forces, thereby losing its proper function and affecting its protective sealing effect. Compared with the prior art, the implementation of this embodiment, through the cooperation of the toggle block 401, the arc rail 409, the claw 403 and the claw groove 410, the fixed protection ring 301 can complete the protection of the explosion-proof valve 2 only by simple rotation during installation. Compared with the traditional bolt installation, it does not require the use of tools to apply a large torque during installation, so that even inexperienced staff can easily complete the installation work, saving installation time and improving installation efficiency. At the same time, through the clamping of the claw 403 and the claw groove 410, the abutment of the clamping rod 416 and the rubber convex strip 417, the fixing effect after installation is guaranteed, thereby improving the stability of the protective function of the protective shock absorbing mechanism.

[0038] For further examples, please refer to Figures 1 to 8 As shown:

[0039] The protective disassembly mechanism includes a toggle block 401, which is fixedly connected to the outer surface of the fixed protective ring 301 at equal intervals. A toggle block 401 is rotatably connected to a torsion spring shaft 402 on one side of the toggle block 401, and a claw 403 is fixedly connected to the outer surface of the torsion spring shaft 402. A push rod 404 and a push rod 405 are fixedly connected to the side of the toggle block 401 close to the claw 403 respectively. A sliding ring 407 is slidably sleeved on the outer surface of the fixed protective ring 301, and a supporting spring 408 is fixedly connected between the top of the sliding ring 407 and the fixed protective ring 301. An L-shaped push column 406 is fixedly connected to the bottom of the sliding ring 407 at equal intervals, and the L-shaped push column 406 contacts the adjacent claw 403. An arc rail 409 is fixedly connected to the top of the cover body 1 at equal intervals. The toggle block 401 can be slidably connected to the arc rail 409, and a claw groove 410 is provided on the top of the inner wall of the arc rail 409.

[0040] A guide push column 411 is slidably connected to one side of the arc rail 409, and an arc block 412 is equidistantly fixedly connected to the top of the cover body 1. The arc block 412 is fixedly connected to the adjacent guide push column 411, and a guide slide column 413 is fixedly connected to one side of the arc block 412. The guide slide column 413 is slidably connected to one side of the arc rail 409, and a return spring 414 is fixedly connected between the guide slide column 413 and the arc rail 409. An arc groove 415 is opened on the top of the arc block 412, and a clamping rod 416 is equidistantly slidably connected to the top of the cover body 1. A column is fixedly connected to the bottom of the clamping rod 416, and the clamping rod 416 is slidably connected to the arc groove 415 through the column. The claw 403 can be clamped with the claw groove 410, and the outer surface of the fixed protective ring 301 is equidistantly fixedly connected with rubber convex strips 417, and the claw 403 is inclined, and the top of the claw 403 is higher than the top of the toggle block 401.

[0041] The provision of the rubber convex strip 417 can increase the friction force when in contact with the outer surface of the fixed protection ring 301 , thereby improving the abutment and fixing effect on the fixed protection ring 301 .

[0042] In the implementation of this embodiment, the interference of foreign objects on the explosion-proof valve 2 can be reduced by covering the fixed protection ring 301, the protection mesh cover 303 and the sliding protection ring 302. At the same time, if it is impacted by external force, the setting of the rubber ring 304 can absorb the external force impact on the sliding protection ring 302, thereby reducing the impact force generated by the external force, which not only protects the explosion-proof valve 2, but also has a protective effect on the protective shock-absorbing mechanism itself by buffering the external force, thereby improving the service life of the protective shock-absorbing mechanism. In addition, through the setting of the protective mesh cover 303, when the explosion-proof valve 2 is relieving pressure, the pressure can flow out from the through hole of the protective mesh cover 303, while reducing the entry of external dust and other substances into the explosion-proof valve 2, reducing the failure rate of the power battery, thereby extending the service life of the power battery, and ensuring the protective effect of the cover body 1 on the power battery.

[0043] Everything in the above example works like this:

[0044] In the initial state: when the torsion spring shaft 402 is in the normal state, the height of the top of the claw 403 exceeds the height of the top of the toggle block 401, the upper side of the claw 403 contacts the push rod 404, and the lower side of the claw 403 does not contact the push rod 405.

[0045] The following is the working process of the protective disassembly mechanism for disassembling the protective shock absorbing mechanism:

[0046] When in use, the staff holds the fixed protective ring 301, the fixed protective ring 301 is sleeved to the outside of the explosion-proof valve 2, the toggle block 401 is placed on one side of the arc track 409, and then the fixed protective ring 301 is rotated to make the toggle block 401 slide into the arc track 409. When sliding, because the upper end of the claw 403 is higher than the toggle block 401, the claw 403 will be in the process of sliding of the toggle block 401. Since the arc track 409 is located on the movement trajectory of the claw 403, the claw 403 is squeezed by one side of the arc track 409 and rotates downward with the torsion spring shaft 402 as the center of the circle. The torsion spring shaft 402 is twisted, and after the claw 403 is squeezed by the arc track 409, the The upper side of the claw 403 is no longer in contact with the push rod 404, and the lower side of the claw 403 is in contact with the push rod 405, until the toggle block 401 slides to one side of the inner part of the arc track 409, and the claw 403 is aligned with the claw groove 410. At this time, under the rotation of the torsion spring shaft 402, the claw 403 is inserted into the claw groove 410 and engaged with the claw groove 410. At this time, the claw 403 is in contact with the push rod 404 again. Because the claw 403 is inclined, after the claw 403 is engaged with the claw groove 410, when the toggle block 401 is subjected to the force of sliding toward the outside of the arc track 409, it cannot rotate upward under the limitation of the push rod 404 and the claw groove 410, and thus cannot slide out of the arc track 409;

[0047] Furthermore, when the toggle block 401 slides into the arc rail 409, the toggle block 401 simultaneously pushes the guide push column 411 to slide in the direction of the arc block 412. The sliding of the arc block 412 drives the guide slide column 413 to slide, the return spring 414 is compressed, and the arc groove 415 moves at the same time. By squeezing the arc surface when the arc groove 415 moves, the column of the clamping rod 416 drives the clamping rod 416 to approach the rubber convex strip 417. When the claw 403 is completely engaged with the claw groove 410, one end of the clamping rod 416 can just complete the abutment with the rubber convex strip 417. By setting the rubber convex strip 417, the friction force when contacting the outer surface of the fixed protective ring 301 can be improved. , improve the abutment and fixing effect of the fixed protection ring 301, and through the cooperation of the toggle block 401, the arc rail 409, the claw 403 and the claw groove 410, the fixed protection ring 301 can complete the protection work of the explosion-proof valve 2 by simply rotating during installation. Compared with the traditional bolt installation, it does not require the use of tools and a large torque during installation, so that even inexperienced workers can easily complete the installation work, saving installation time and improving installation efficiency. At the same time, through the clamping of the claw 403 and the claw groove 410, the abutment of the clamping rod 416 and the rubber convex strip 417, the fixing effect after installation is guaranteed, thereby improving the stability of the protection function of the protective shock absorbing mechanism;

[0048] In addition, when disassembly is required, the sliding ring 407 can be pressed downward, so that the sliding ring 407 drives the multiple L-shaped push columns 406 to move downward at the same time, and then the push of the L-shaped push columns 406 can make the claws 403 rotate downward to disengage from the claw grooves 410, and then the toggle block 401 can be slid outward, and at the same time, the arc block 412 is driven to reset at the same time under the rebound of the reset spring 414, and the clamping rod 416 is disengaged from the abutment against the rubber convex strip 417, and then the sliding block 401 is released. The pressing of the ring 407, under the rebound of the supporting spring 408, drives the sliding ring 407 and the L-shaped push column 406 to reset, and the claw 403 is also reset under the rebound of the torsion spring shaft 402, so as to facilitate the sliding installation of the toggle block 401 and the fixed limit of the toggle block 401 next time, thereby facilitating the disassembly and installation of the protective shock-absorbing mechanism, realizing the protection of the explosion-proof valve 2 while facilitating the disassembly and installation of the protective shock-absorbing mechanism to facilitate the maintenance of the explosion-proof valve 2.

[0049] Please refer to the above working process Figures 1 to 8 .

[0050] The following is the working process of the protective shock-absorbing mechanism for alleviating the impact and interference of external forces on the explosion-proof valve 2:

[0051] After the protective shock-absorbing mechanism is installed, when the cover body 1 is in use, the interference of foreign objects on the explosion-proof valve 2 can be reduced by covering the fixed protective ring 301, the protective mesh cover 303 and the sliding protective ring 302. At the same time, if it is impacted by external force, the setting of the rubber ring 304 can absorb the external force impact on the sliding protective ring 302, thereby reducing the impact force generated by the external force, which not only protects the explosion-proof valve 2, but also protects the protective shock-absorbing mechanism itself by buffering the external force, thereby improving the service life of the protective shock-absorbing mechanism, and through the setting of the protective mesh cover 303, when the explosion-proof valve 2 is relieving pressure, the pressure can flow out from the through hole of the protective mesh cover 303, while reducing the entry of external dust and other substances into the explosion-proof valve 2, reducing the failure rate of the power battery, thereby extending the service life of the power battery, and ensuring the protective effect of the cover body 1 on the power battery.

[0052] Please refer to the above working process Figures 1 to 8 .

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power battery cover plate for preventing electrolyte leakage, comprising a cover plate body (1), wherein an explosion-proof valve (2) is arranged on the top of the cover plate body (1), characterized in that: It also includes: a protective shock absorbing mechanism and a protective disassembly mechanism, wherein the protective disassembly mechanism is located outside the protective shock absorbing mechanism; The protective shock absorbing mechanism is used to mitigate the impact and interference of external forces on the explosion-proof valve (2), and the protective disassembly mechanism is used to disassemble the protective shock absorbing mechanism.

2. A power battery cover plate for preventing electrolyte leakage according to claim 1, characterized in that: The protective shock-absorbing mechanism comprises a fixed protective ring (301), the fixed protective ring (301) being arranged on the upper surface of the cover plate body (1), the fixed protective ring (301) being sleeved on the outside of the explosion-proof valve (2), a sliding protective ring (302) being slidably connected through the top of the fixed protective ring (301), a protective mesh cover (303) being fixedly connected to the inner surface of the sliding protective ring (302), a rubber ring (304) being fixedly connected between the inner walls of the fixed protective ring (301), and the top of the rubber ring (304) being in contact with the sliding protective ring (302).

3. A power battery cover plate for preventing electrolyte leakage according to claim 2, characterized in that: The protective disassembly mechanism comprises a toggle block (401), the toggle block (401) is fixedly connected to the outer surface of the fixed protective ring (301) at equal distances, one side of the toggle block (401) is rotatably connected to a torsion spring shaft (402), the outer surface of the torsion spring shaft (402) is fixedly connected to a claw (403), and the side of the toggle block (401) close to the claw (403) is respectively fixedly connected to a push rod (404) and a push rod (405).

4. A power battery cover plate for preventing electrolyte leakage according to claim 3, characterized in that: A sliding ring (407) is slidably sleeved on the outer surface of the fixed protective ring (301), a support spring (408) is fixedly connected between the top of the sliding ring (407) and the fixed protective ring (301), and an L-shaped push column (406) is equidistantly fixedly connected to the bottom of the sliding ring (407), and the L-shaped push column (406) is in contact with an adjacent claw (403).

5. A power battery cover plate for preventing electrolyte leakage according to claim 4, characterized in that: The top of the cover plate body (1) is fixedly connected with an arc-shaped rail (409) at equal intervals, the shifting block (401) can be slidably connected with the arc-shaped rail (409), and the top of the inner wall of the arc-shaped rail (409) is provided with a claw groove (410).

6. A power battery cover plate for preventing electrolyte leakage according to claim 5, characterized in that: A guide push column (411) is slidably connected to one side of the arc rail (409), an arc block (412) is equidistantly fixedly connected to the top of the cover body (1), the arc block (412) is fixedly connected to an adjacent guide push column (411), a guide slide column (413) is fixedly connected to one side of the arc block (412), the guide slide column (413) is slidably connected to one side of the arc rail (409), and a return spring (414) is fixedly connected between the guide slide column (413) and the arc rail (409).

7. A power battery cover plate for preventing electrolyte leakage according to claim 6, characterized in that: The top of the arc block (412) is provided with an arc groove (415), the top of the cover plate body (1) is equidistantly slidably connected with a clamping rod (416), the bottom of the clamping rod (416) is fixedly connected with a column rod, and the clamping rod (416) is slidably connected to the arc groove (415) via the column rod.

8. A power battery cover plate for preventing electrolyte leakage according to claim 7, characterized in that: The clamping claw (403) can be clamped with the claw groove (410), the outer surface of the fixed protection ring (301) is fixedly connected with rubber convex strips (417) at equal intervals, the clamping claw (403) is inclined, and the top of the clamping claw (403) is higher than the top of the toggle block (401).

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