Heat-conducting bolt and high-heat-dissipation battery pack connecting piece

Abstract

The utility model discloses a battery pack connecting piece with high heat dissipation, which belongs to the technical field of battery pack connection and comprises a heat conducting patch, an upper arc-shaped sleeve, transverse radiating fins and heat conducting bolts, the upper arc-shaped sleeve is fixedly mounted at the top of the heat conducting patch, and a group of transverse radiating fins are mounted at the end of the upper surface of the upper arc-shaped sleeve respectively. Heat conduction bolts are arranged on the front portion and the rear portion of the top of each set of transverse cooling fins, the transverse cooling fins are fixedly installed on the transverse cooling fins through insulation bases, nuts are connected to the heat conduction bolts, and heat conduction operation can be conducted on batteries in time through the transverse cooling fins and the heat conduction pasters; the heat-conducting bolt is arranged on the transverse cooling fin, and the center hole is formed in the heat-conducting bolt, so that heat on the transverse cooling fin can be discharged outwards along the heat-conducting bolt and the center hole, heat-conducting operation is achieved, and the heat-conducting bolt has a good heat-conducting effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery pack connection, and particularly relates to a heat-conducting bolt and a battery pack connector with high heat dissipation. Background Technique

[0002] With the rapid development of new energy vehicles, energy storage systems, portable electronic devices and other fields, lithium-ion batteries, as the main energy supply devices, their safety, reliability and performance stability have attracted more and more attention. Especially in high-temperature environments, the heat dissipation performance of lithium-ion battery packs has become one of the key factors affecting their performance and lifespan. Since a lithium-ion battery pack is composed of multiple lithium-ion batteries fixedly assembled, when performing the fixed assembly operation, it is usually necessary to use insulating connectors to fixedly connect multiple lithium-ion batteries.

[0003] Since the outside of the battery pack is wrapped with a shell, and the shell basically does not dissipate heat. At this time, the heat of the battery pack is basically discharged outward through the bolt part exposed outside. Traditional battery pack connection bolts, although they can meet the basic fixed connection requirements, have great deficiencies in heat dissipation. On the one hand, due to the limited contact area between the bolt and the battery pole column, the heat transfer efficiency is low, which is not conducive to heat dissipation operation. On the other hand, traditional bolt materials do not have good heat conduction effects and cannot conduct heat in a timely manner, making the battery pack prone to overheating in high-temperature environments. In view of this, we have proposed a battery pack insulating connector with high heat dissipation. Content of the Utility Model

[0004] In order to solve the above problems, the utility model provides a heat-conducting bolt and a battery pack connector with high heat dissipation. The specific technical solutions are as follows:

[0005] A heat-conducting bolt includes a bolt main body and an insulating base. The insulating base is fixedly installed at the bottom of the bolt main body. A central hole is provided in the bolt main body along the height direction of the bolt main body and communicating with the outside. A compression rod is fixedly installed on the hole wall of the central hole, and the compression rod divides the central hole area into several ventilation gaps.

[0006] Preferably, the compression rod is a cross-shaped compression rod, and the cross section is cross-shaped.

[0007] Preferably, both ends of the central hole communicate with the outside, and the middle part of the insulating base is hollow.

[0008] Preferably, the number of the ventilation gaps is four.

[0009] A high heat dissipation battery pack connector, comprising a heat conduction patch, an upper arc-shaped sleeve, a transverse heat sink and any one of the above-mentioned heat conduction bolts. The upper arc-shaped sleeve is fixedly installed at the top of the heat conduction patch. A group of transverse heat sinks are respectively installed at the ends of the upper surface of the upper arc-shaped sleeve. Heat conduction bolts are arranged front and back at the top of each group of transverse heat sinks and are fixedly installed on the transverse heat sinks through an insulating base. Nuts are connected to the heat conduction bolts.

[0010] Preferably, a plurality of longitudinal heat sinks arranged linearly at equal intervals are fixedly installed between the two groups of transverse heat sinks.

[0011] Preferably, the cross-section of the nut is hexagonal, which facilitates the tightening operation.

[0012] Preferably, a threaded sleeve is installed at the lower end of the nut, and the threaded sleeve is in threaded fit with the thread on the heat conduction bolt. Preferably, the thickness of the nut is 0.3 cm - 0.6 cm, which can make the nut and the threaded sleeve tightened more firmly at the same time.

[0013] Preferably, a plurality of vertical heat sinks are installed on the annular side surface of the threaded sleeve.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through the arranged transverse heat sinks and heat conduction patches, the present utility model can conduct heat on the battery in time. In addition, through the arranged heat conduction bolts and a central hole is arranged in the heat conduction bolt, the heat on the transverse heat sink can be discharged outwards along the heat conduction bolt and the central hole part, realizing the heat conduction operation and achieving the effect of good heat conduction at the heat conduction bolt part.

[0016] 2. Through the arranged longitudinal heat sinks, the present utility model can further conduct heat and improve the heat dissipation effect. In addition, the nut can be tightened and fixed, the threaded sleeve can promote the thread connection to be more firm, and the vertical heat sinks can improve the heat dissipation effect of the threaded sleeve part. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the high heat dissipation battery pack connector;

[0018] Figure 2 It is an exploded structure schematic diagram of the high heat dissipation battery pack connector;

[0019] Figure 3 For Figure 2 The enlarged view at A in

[0020] Figure 4 It is a schematic diagram of the structure of the heat conduction bolt.

[0021] Wherein: 1. Heat-conducting patch; 10. Upper arc-shaped sleeve; 11. Battery assembly chamber; 12. Transverse heat sink; 13. Longitudinal heat sink; 14. Heat dissipation gap;

[0022] 2. Bolt body; 20. Insulating base; 21. Central hole; 22. Inner cross-shaped compression bar; 23. Ventilation gap;

[0023] 3. Nut; 30. Threaded sleeve; 31. Vertical heat sink. Specific implementation mode

[0024] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope.

[0025] A battery pack connector with high heat dissipation, referring to Figure 1-2 , including a heat-conducting patch 1, an upper arc-shaped sleeve 10, a transverse heat sink 12 and a heat-conducting bolt. The heat-conducting bolt includes a bolt body 2 and an insulating base 20. The insulating base 20 is installed at the bottom of the bolt body 2. A central hole 21 is provided in the bolt body 2 along the height direction of the bolt body 2 and communicating with the outside. A compression bar 22 is fixedly installed on the inner wall of the central hole 21. The compression bar 22 is a cross-shaped compression bar 22 with a cross-shaped cross-section, which can increase the compression resistance and anti-deformation effect of the bolt. The compression bar 22 divides the central hole 21 area into four ventilation gaps 23. Both ends of the central hole 21 communicate with the outside. The middle of the insulating base 20 is hollow, which is convenient for heat dissipation operation at the ventilation gap 23, so that the heat-conducting bolt has good heat conduction and heat dissipation effects; the top of the heat-conducting patch 1 is fixedly installed with an upper arc-shaped sleeve 10. A group of transverse heat sinks 12 are respectively installed at the left and right ends of the upper surface of the upper arc-shaped sleeve 10. Heat-conducting bolts are arranged front and back at the top of each group of transverse heat sinks 12 and are fixedly installed on the transverse heat sink 12 through the insulating base 21. A nut 3 is connected to the heat-conducting bolt; A plurality of longitudinal heat sinks 13 arranged linearly and equidistantly are fixedly installed between the two groups of transverse heat sinks 12; The cross-section of the nut 3 is hexagonal. A threaded sleeve 30 is installed at the lower end of the nut 3. The thickness of the nut is set at 0.3-0.6 cm, so that the nut 3 and the threaded sleeve 30 can be tightened more firmly at the same time, increasing the contact area of the threaded connection part with the heat-conducting bolt. The threaded sleeve 30 is in threaded fit with the thread on the heat-conducting bolt. A plurality of vertical heat sinks 31 are installed on the annular side surface of the threaded sleeve 30, which is convenient for heat dissipation operation.

[0026] In the high heat dissipation battery pack connector of this embodiment, a battery assembly chamber 11 is provided in the heat conduction patch 1. The battery assembly chamber 11 is used for the assembly operation of the battery, enabling the heat conduction patch 1 to be attached to the surface of the battery for heat conduction operation. The heat generated during battery operation can be conducted along the heat conduction patch 1, the transverse heat dissipation fin 12, and the longitudinal heat dissipation fin 13 to the heat conduction bolt part and dissipated outward. Additionally, since a central hole 21 is provided in the heat conduction bolt, the central hole 21 part can ventilate, and the heat can be dissipated outward from the central hole 21 part for efficient heat dissipation.

Claims

1. A heat-conducting bolt, characterized in that: It includes a bolt body and an insulating base, wherein the insulating base is fixedly installed at the bottom of the bolt body, and a center hole is arranged in the bolt body along the height direction of the bolt body and connected to the outside world, and a compression rod is fixedly installed on the hole wall of the center hole, and the compression rod divides the center hole area to form a plurality of ventilation gaps.

2. A heat-conducting bolt according to claim 1, characterized in that: The compression rod is a cross-shaped compression rod with a cross-shaped cross section.

3. A heat-conducting bolt according to claim 1, characterized in that: Both ends of the central hole are connected to the outside, and the middle of the insulating base is hollow.

4. A heat-conducting bolt according to claim 2, characterized in that: The number of the ventilation gaps is four.

5. A high heat dissipation battery pack connector, characterized in that: It comprises a thermally conductive patch, an upper arc sleeve, a transverse heat sink and the thermally conductive bolts described in any one of claims 1 to 4, wherein the upper arc sleeve is fixedly installed on the top of the thermally conductive patch, a group of transverse heat sinks are respectively installed on the ends of the upper surface of the upper arc sleeve, and thermally conductive bolts are arranged at the front and back of the top of each group of transverse heat sinks, which are fixedly installed on the transverse heat sinks through an insulating base, and nuts are connected to the thermally conductive bolts.

6. A high heat dissipation battery pack connector according to claim 5, characterized in that: A plurality of longitudinal radiating fins arranged linearly and at equal intervals are fixedly mounted between the two groups of transverse radiating fins.

7. A high heat dissipation battery pack connector according to claim 5, characterized in that: The cross section of the nut is a hexagonal shape.

8. The high heat dissipation battery pack connector according to claim 5, characterized in that: A threaded sleeve is installed at the lower end of the nut, and the threaded sleeve is matched and connected with the thread on the heat-conducting bolt.

9. A high heat dissipation battery pack connector according to claim 8, characterized in that: A plurality of vertical heat sinks are installed on the annular side surface of the threaded sleeve.

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