Lithium battery insulation cover plate

Abstract

The invention discloses a lithium battery insulation cover plate which comprises an insulation cover plate and a heat dissipation dustproof pad insulation heat conduction plate installed in the insulation cover plate. The heat dissipation dustproof pad is located between the heat conduction plate and the insulation cover plate, and an insulation spacer is arranged between the heat dissipation dustproof pad and the insulation heat conduction plate; a plurality of heat dissipation holes are formed in the heat dissipation dustproof pad, a dust collection groove of an inward concave structure is formed in the upper surface of the heat dissipation dustproof pad, a heat exchange cavity is formed between the dust collection groove and the insulating cover plate, and flow guide holes are formed in the two sides of the insulating cover plate and communicated with the heat exchange cavity; through the arrangement of a heat dissipation dustproof pad, a heat exchange cavity is formed between a dust collection groove and an insulation cover plate, heat generated in the lithium battery enters the heat exchange cavity through heat dissipation holes, heat flow in the heat exchange cavity exchanges heat with external cold air through a flow guide hole, and rapid heat dissipation of the interior of the lithium battery is facilitated; and meanwhile, heat is transferred and dissipated through the insulating heat-conducting plate, so that the heat dissipation effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to an insulating cover plate of a lithium battery. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996. Their safety, specific capacity, self-discharge rate and performance-price ratio are all superior to lithium ion batteries.

[0003] However, the cover design only has a simple fixing function and certain explosion-proof characteristics, and has no other functions. During the continuous use of the battery, part of the electrical energy will be converted into heat energy, which needs to be processed in time, otherwise it will affect the performance of the battery, and the cover structure does not have a heat dissipation function. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium battery insulating cover plate in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme: a lithium battery insulating cover plate, comprising a structural body, the structural body comprising an insulating cover plate and a heat dissipation dustproof pad and an insulating heat conductive plate installed inside the insulating cover plate;

[0006] A cavity structure is formed between the heat conducting plate and the insulating cover plate, the heat dissipation dustproof pad is located between the heat conducting plate and the insulating cover plate, and the heat dissipation dustproof pad is in contact with the inner wall of the insulating cover plate, an insulating gasket is provided between the heat dissipation dustproof pad and the insulating heat conducting plate, and two sides of the insulating gasket are respectively in close contact with the heat dissipation dustproof pad and the heat conducting plate;

[0007] The heat dissipation and dustproof pad is provided with a plurality of heat dissipation holes, the upper surface of the heat dissipation and dustproof pad is provided with a dust collecting groove with an inwardly concave structure, a heat exchange cavity is formed between the dust collecting groove and the insulating cover plate, and guide holes are provided on both sides of the insulating cover plate, and the guide holes are connected to the heat exchange cavity.

[0008] Preferably, the insulating heat-conducting plate is a multi-layer structure consisting of an insulating heat-conducting bottom plate, an insulating heat-conducting cover plate and a heat pipe, and the heat pipe is located between the insulating heat-conducting bottom plate and the insulating heat-conducting cover plate.

[0009] Preferably, first mounting members extending outward in parallel are provided at both ends of the heat conducting plate.

[0010] Preferably, second mounting pieces extending outward in parallel are provided at both ends of the heat dissipation and dustproof pad.

[0011] Preferably, mounting grooves are provided at both ends inside the insulating cover plate.

[0012] Preferably, a rectangular groove structure is provided in the center of the insulating gasket.

[0013] Preferably, the insulating gasket is one of an insulating rubber gasket and an insulating silicone gasket with an elastic structure.

[0014] The beneficial effects of the present invention are:

[0015] 1. By installing a heat dissipation dustproof pad and an insulating heat conductive plate inside the insulating cover plate, heat is transferred and dissipated through the insulating heat conductive plate, so that the heat dissipation effect of the lithium battery insulating cover plate is better under the premise of insulation;

[0016] 2. Through the provision of a heat dissipation dustproof pad, and a dust collecting groove with a concave structure on the upper surface of the heat dissipation dustproof pad, a heat exchange cavity is formed between the dust collecting groove and the insulating cover plate, and at the same time, guide holes are provided on both sides of the insulating cover plate, which are connected to the heat exchange cavity. The heat generated inside the lithium battery enters the heat exchange cavity through the heat dissipation holes, and the heat flow in the exchange cavity exchanges heat with the external cold air through the guide holes, which is beneficial to the rapid heat dissipation inside the lithium battery. At the same time, through the provision of the heat dissipation dustproof pad, the dust in the external air is isolated and collected in the dust collecting groove through the heat dissipation dustproof pad, so as to prevent a large amount of dust from entering the lithium battery, and at the same time play a role in dust prevention and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the insulating cover plate of a lithium battery of the present invention;

[0018] Figure 2 This is the second schematic diagram of the overall structure of the insulating cover plate of a lithium battery of the present invention;

[0019] Figure 3 It is a schematic diagram of the installation structure of the insulating cover plate and the heat dissipation and dustproof pad in the present invention;

[0020] Figure 4 The figure is a schematic diagram of the installation structure of the insulating cover plate, the heat dissipation and dustproof pad and the insulating gasket in the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the heat dissipation and dustproof pad in the present invention;

[0022] Figure 6 The figure is a schematic diagram of the installation structure of the heat dissipation and dustproof pad and the insulating gasket in the present invention.

[0023] In the figure:

[0024] 1. Insulating cover plate; 2. Heat dissipation and dustproof pad; 3. Insulating gasket; 4. Second mounting part; 5. Dust collecting groove; 6. Heat dissipation hole; 7. Diversion hole; 8. Mounting groove; 9. Insulating heat conducting plate; 10. First mounting part. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1-6 As shown:

[0027] In the present embodiment, a lithium battery insulating cover plate includes a structural body, the structural body includes an insulating cover plate 1 and a heat dissipation dustproof pad 2 and an insulating heat conductive plate 9 installed inside the insulating cover plate 1, the heat dissipation dustproof pad 2 is located between the insulating cover plate 1 and the insulating heat conductive plate 9, wherein the heat dissipation dustproof pad 2 is a heat dissipation dustproof pad made of fiber material or a dustproof pad made of sponge material; a cavity structure is formed between the heat conductive plate 9 and the insulating cover plate 1, the heat dissipation dustproof pad 2 is located between the heat conductive plate 9 and the insulating cover plate 1, and the heat dissipation dustproof pad 2 is in contact with the inner wall of the insulating cover plate 1, an insulating gasket 3 is provided between the heat dissipation dustproof pad 2 and the insulating heat conductive plate 9, and the two sides of the insulating gasket 3 are tightly fitted with the heat dissipation dustproof pad 2 and the heat conductive plate 9 respectively; a plurality of heat dissipation holes 6 are provided on the heat dissipation dustproof pad 2, A dust collecting groove 5 with a concave structure is provided on the upper surface of the heat dissipation and dustproof pad 2, and a heat exchange cavity is formed between the dust collecting groove 5 and the insulating cover plate 1. Guide holes 7 are provided on both sides of the insulating cover plate 1, and the guide holes 7 are communicated with the heat exchange cavity. By providing the dust collecting groove 5 with a concave structure on the upper surface of the heat dissipation and dustproof pad 2, a heat exchange cavity is formed between the dust collecting groove 5 and the insulating cover plate 1, and the heat generated inside the lithium battery enters the heat exchange cavity through the heat dissipation holes 6. At the same time, by arranging the guide holes 7 on both sides of the insulating cover plate 1, the heat flow in the heat exchange cavity exchanges heat with the external cold air through the guide holes 7, which is beneficial to the rapid heat dissipation inside the lithium battery. At the same time, through the arrangement of the heat dissipation and dustproof pad 2, the dust in the external air is isolated and collected in the dust collecting groove 5 through the heat dissipation and dustproof pad 2, so as to prevent a large amount of dust from entering the lithium battery.

[0028] It should be noted that the insulating heat conductive plate 9 is a multi-layer structure consisting of an insulating heat conductive bottom plate, an insulating heat conductive cover plate and a heat pipe. The heat pipe is located between the insulating heat conductive bottom plate and the insulating heat conductive cover plate. By setting the insulating heat conductive plate 9 as a structure consisting of an insulating heat conductive bottom plate, an insulating heat conductive cover plate and a heat pipe, it is beneficial for the heat pipe to transfer and dissipate heat, so that the insulating cover plate of the lithium battery improves the heat dissipation effect while having insulation.

[0029] It should be noted that the first mounting members 10 extending outward in parallel are provided at both ends of the heat conducting plate 9, the second mounting members 4 extending outward in parallel are provided at both ends of the heat dissipation and dustproof pad 2, mounting grooves 8 are provided at both ends inside the insulating cover plate 1, and the structure of the first mounting member 10 and the second mounting member 4 is the same as that of the mounting groove 8. The first mounting member 10 and the second mounting member 4 are clamped in the mounting groove 8 and fixedly installed by screws.

[0030] It should be noted that a rectangular groove structure is provided at the center of the insulating gasket 3 to prevent the insulating gasket 3 from blocking the heat dissipation hole 6 and reducing the heat dissipation effect.

[0031] It should be noted that the insulating gasket 3 is one of an insulating rubber gasket and an insulating silicone gasket with an elastic structure.

[0032] Working principle:

[0033] By installing a heat dissipation dustproof pad 2 and an insulating heat conductive plate 9 inside the insulating cover plate 1, heat is transferred and dissipated through the insulating heat conductive plate 9, so that the heat dissipation effect of the lithium battery insulating cover plate is better under the premise of insulation; by the setting of the heat dissipation dustproof pad 2, and the upper surface of the heat dissipation dustproof pad 2 is provided with a dust collecting groove 5 with an inwardly concave structure, a heat exchange cavity is formed between the dust collecting groove 5 and the insulating cover plate 1, and at the same time, guide holes 7 are provided on both sides of the insulating cover plate 1, and the guide holes 7 are connected with the heat exchange cavity. The heat generated inside the lithium battery enters the heat exchange cavity through the heat dissipation holes, and the heat flow in the exchange cavity exchanges heat with the external cold air through the guide holes 7, which is beneficial to the rapid heat dissipation inside the lithium battery. At the same time, through the setting of the heat dissipation dustproof pad 2, the dust in the external air is isolated and collected in the dust collecting groove 5 through the heat dissipation dustproof pad 2, so as to avoid a large amount of dust from entering the interior of the lithium battery, and at the same time play a role in dust prevention and heat dissipation.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lithium battery insulating cover plate, characterized in that: It comprises a structural body, the structural body comprising an insulating cover plate (1) and a heat dissipation dustproof pad (2) and an insulating heat conducting plate (9) installed inside the insulating cover plate (1); A cavity structure is formed between the heat conducting plate (9) and the insulating cover plate (1); the heat dissipation dustproof pad (2) is located between the heat conducting plate (9) and the insulating cover plate (1), and the heat dissipation dustproof pad (2) is in contact with the inner wall of the insulating cover plate (1); an insulating gasket (3) is provided between the heat dissipation dustproof pad (2) and the insulating heat conducting plate (9); and two sides of the insulating gasket (3) are in close contact with the heat dissipation dustproof pad (2) and the heat conducting plate (9), respectively; The heat dissipation and dustproof pad (2) is provided with a plurality of heat dissipation holes (6); the upper surface of the heat dissipation and dustproof pad (2) is provided with a dust collecting groove (5) with an inwardly concave structure; a heat exchange cavity is formed between the dust collecting groove (5) and the insulating cover plate (1); guide holes (7) are provided on both sides of the insulating cover plate (1); the guide holes (7) are connected to the heat exchange cavity.

2. The lithium battery insulating cover plate according to claim 1, characterized in that: The insulating heat-conducting plate (9) is a multi-layer structure consisting of an insulating heat-conducting bottom plate, an insulating heat-conducting cover plate and a heat pipe, and the heat pipe is located between the insulating heat-conducting bottom plate and the insulating heat-conducting cover plate.

3. The lithium battery insulating cover plate according to claim 1, characterized in that: First mounting members (10) extending outwards in parallel are provided at both ends of the heat conducting plate (9).

4. The lithium battery insulating cover plate according to claim 1, characterized in that: Second mounting members (4) extending outwards in parallel are provided at both ends of the heat dissipation and dustproof pad (2).

5. The lithium battery insulating cover plate according to claim 1, characterized in that: The insulating cover plate (1) has mounting grooves (8) at both ends thereof.

6. The lithium battery insulating cover plate according to claim 1, characterized in that: A rectangular groove structure is provided at the centre of the insulating gasket (3).

7. The lithium battery insulating cover plate according to claim 1, characterized in that: The insulating gasket (3) is one of an insulating rubber gasket and an insulating silicone gasket with an elastic structure.

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