Battery pack heat dissipation structure

Abstract

The utility model discloses a heat dissipation structure of a battery pack. The heat dissipation structure comprises a base and an elastic clamp, the elastic clamps are symmetrically arranged at two ends and two sides of the base, and a clamping area for placing the lithium battery is formed in the middle. The base is composed of a bottom plate and symmetrically-arranged side plates, and the elastic clamp is composed of a first elastic arm, a connecting arm, a second elastic arm and a fixing arm. The elastic clamp is installed on the base, the first arc-shaped parts are stressed to push the second elastic arm to deform towards the outside, and after the clamping area is filled with the lithium batteries, the lithium batteries push the first elastic arm to deform. According to the battery pack heat dissipation structure, the number of lithium batteries can be increased according to different conditions, the area of a clamping area is enlarged, and different numbers of lithium batteries can be fixed within a certain range. And clamping type fixation is adopted, so that the heat dissipation effect of the lithium batteries is ensured, cold air can flow among the lithium batteries, and the temperature of the lithium batteries is prevented from rapidly rising when the lithium batteries are used.

Description

Technical Field

[0001] The utility model relates to battery technology, in particular to a battery pack heat dissipation structure. Background Art

[0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. 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 better than lithium ion batteries.

[0003] Lithium batteries generate a lot of energy and heat during use. If the heat cannot be dissipated and conducted away in time, the battery temperature will rise, which will affect the battery life cycle and accelerate the aging of the battery. In more serious cases, high temperature will cause internal fire and explosion of the battery, which will cause fatal harm to the user. Utility Model Content

[0004] In order to solve the defects of the prior art mentioned above, the utility model proposes a battery pack heat dissipation structure.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A battery pack heat dissipation structure includes a base and an elastic clip, wherein the elastic clip is symmetrically arranged at both ends and both sides of the base to form a clamping area for placing a lithium battery in the middle.

[0007] The base is composed of a bottom plate and symmetrically arranged side plates, a through area is formed in the middle of the side plates, and symmetrically arranged mounting holes are provided on the side plates, and the elastic clips are fixed therein through the mounting holes.

[0008] The elastic clip is composed of a first elastic arm, a connecting arm, a second elastic arm and a fixed arm. The first elastic arm and the connecting arm are connected by a first arc portion, the connecting arm and the second elastic arm are connected by a second arc portion, and a fixed area for placing the side plate is formed between the second elastic arm and the fixed arm.

[0009] The elastic clip is installed on the base, and the first arc-shaped parts are subjected to force, pushing the second elastic arm to deform toward the outer shape. After the clamping area is full of lithium batteries, the lithium batteries push the first elastic arm to deform.

[0010] In the battery pack heat dissipation structure of the utility model, a plurality of heat dissipation holes are arranged on the bottom plate.

[0011] In the battery pack heat dissipation structure of the utility model, the side plate is provided with a first limiting opening for placing the first elastic part.

[0012] In the battery pack heat dissipation structure of the utility model, a second limiting opening is provided on the side plate, and a limiting arm is provided on the fixed arm. The limiting arm faces the fixed area, and when the elastic clip is installed on the base, the limiting arm is kept in the limiting opening.

[0013] In the battery pack heat dissipation structure of the utility model, the width of the penetration area is smaller than the length of the two connecting arms, but larger than the length of one connecting arm.

[0014] In the battery pack heat dissipation structure of the utility model, in a natural state, the first elastic arm is parallel to the connecting arm and perpendicular to the second elastic arm, and the second elastic arm is parallel to the fixed arm.

[0015] The battery pack heat dissipation structure of the utility model has the following beneficial effects: the battery pack heat dissipation structure can increase the number of lithium batteries according to different situations, expand the area of ​​the clamping area, and can fix different numbers of lithium batteries within a certain range. In addition, the clamping type fixation is adopted to ensure the heat dissipation effect of the lithium battery, and cold air can flow between the lithium batteries to avoid the temperature of the lithium batteries from rising sharply when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the heat dissipation structure of the battery pack of the utility model;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 1 Schematic diagram of the base structure in FIG.

[0019] Figure 4 for Figure 3 A partial structural perspective view of

[0020] Figure 5 for Figure 1 Schematic diagram of the elastic clip structure;

[0021] Figure 6 for Figure 5 Schematic diagram of the normal state structure. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figures 1 to 6 As shown, the heat dissipation structure of the battery pack of the utility model includes a base 1 and an elastic clip 2. The elastic clip 2 is symmetrically arranged at both ends and both sides of the base 1. The elastic clip 2 is provided at four places, respectively located at the four corners of the base 1. When the elastic clips 2 at two places are in contact, the elastic clip 2 can be kept deformed by force. And a clamping area 4 for placing lithium batteries 3 is formed in the middle. After the lithium batteries 3 are fully placed, when they continue to be placed, the elastic clip 2 can be pushed by the lithium batteries 3, so that the elastic clip 2 is deformed by force.

[0024] The base 1 is composed of a bottom plate 5 and symmetrically arranged side plates 6. A through area 7 is formed in the middle of the side plates 6. The width of the through area 7 is less than the length of the two connecting arms 8, but greater than the length of one connecting arm 8, so that after the elastic clips 2 are installed, the symmetrically arranged elastic clips 2 can resist each other and bear force, ensuring that when there is no lithium battery 3 placed in the clamping area 4, the elastic clip 2 will not fall off the base 1. The side plates 6 are provided with symmetrically arranged mounting holes 9, and the elastic clip 2 is fixed therein through the mounting holes 9. The bottom plate 5 is provided with multiple heat dissipation holes 10 to keep the bottom of the lithium battery 3 dissipated.

[0025] The side plate 6 is provided with a first limiting opening 12 for placing the first elastic arm 11. The side plate 6 is provided with a second limiting opening 13. The fixed arm 14 is provided with a limiting arm 15, which faces the fixed area 16. When the elastic clip 2 is installed on the base 1, the limiting arm 15 is kept in the first limiting opening 12. The first elastic arm 11 contacts the surface a in the first limiting opening 12, and the limiting arm 15 contacts the surface b in the second limiting opening 13.

[0026] The elastic clip 2 is composed of a first elastic arm 11, a connecting arm 8, a second elastic arm 18 and a fixed arm 14. The first elastic arm 11 and the connecting arm 8 are connected by a first arc portion 19, the connecting arm 8 and the second elastic arm 18 are connected by a second arc portion 20, and a fixed area 16 for placing the side plate 6 is formed between the second elastic arm 18 and the fixed arm 14. In a natural state, the first elastic arm 11 is parallel to the connecting arm 8 and perpendicular to the second elastic arm 18, and the second elastic arm 18 is parallel to the fixed arm 14.

[0027] The elastic clip 2 is installed on the base 1, and the first arc-shaped parts 19 are subjected to force, pushing the second elastic arm 18 to deform toward the outer shape. After the clamping area 4 is filled with lithium batteries 3, the lithium batteries 3 push the first elastic arm 11 to deform.

[0028] When installing the elastic clip 2, first insert the first arc portion 19 into the mounting hole 9, and then place the fixed arm 14 and the second elastic arm 18 on both sides of the side plate 6, so that the side plate 6 is located in the fixed area 16, and the limiting arm 15 is kept deformed by the force pushed by the side plate 6 so that it enters the stamping opening 17, and then continues to push, which can keep the limiting arm 15 entering the second limiting opening 13, thereby fixing the elastic clip 2 on the base 1.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack heat dissipation structure, comprising a base and an elastic clip, characterized in that: The elastic clips are symmetrically arranged at both ends and both sides of the base, forming a clamping area in the middle for placing the lithium battery. The base is composed of a bottom plate and symmetrically arranged side plates, a through area is formed in the middle of the side plates, and symmetrically arranged mounting holes are provided on the side plates, and the elastic clips are fixed therein through the mounting holes. The elastic clip is composed of a first elastic arm, a connecting arm, a second elastic arm and a fixed arm. The first elastic arm and the connecting arm are connected by a first arc portion, the connecting arm and the second elastic arm are connected by a second arc portion, and a fixed area for placing the side plate is formed between the second elastic arm and the fixed arm. The elastic clip is installed on the base, and the first arc-shaped parts are subjected to force, pushing the second elastic arm to deform toward the outer shape. After the clamping area is full of lithium batteries, the lithium batteries push the first elastic arm to deform.

2. The battery pack heat dissipation structure according to claim 1, characterized in that: The bottom plate is provided with a plurality of heat dissipation holes.

3. The battery pack heat dissipation structure according to claim 1, characterized in that: The side plate is provided with a first limiting opening for placing the first elastic part.

4. The battery pack heat dissipation structure according to claim 1, characterized in that: The side plate is provided with a second limiting opening, the fixed arm is provided with a limiting arm, the limiting arm faces the fixed area, and when the elastic clip is installed on the base, the limiting arm is kept in the limiting opening.

5. The battery pack heat dissipation structure according to claim 1, characterized in that: The width of the through-region is smaller than the length of the two connecting arms, but larger than the length of one connecting arm.

6. The battery pack heat dissipation structure according to claim 1, characterized in that: In a natural state, the first elastic arm is parallel to the connecting arm and perpendicular to the second elastic arm, and the second elastic arm is parallel to the fixed arm.

Images