Efficient heat dissipation battery pack

Abstract

The utility model relates to the technical field of energy systems, aims to solve the problems that a battery pack in the prior art is serious in heating and poor in collision and impact resistance, and provides an efficient heat dissipation battery pack which comprises a plurality of battery monomers, every two adjacent battery monomers are connected through an elastic buffer support arm, and the battery monomers are partially immersed in cooling liquid; the battery pack has the beneficial effects that the single batteries are directly immersed in the cooling liquid, so that the heat dissipation efficiency of the battery pack is improved; and through double buffering of the cooling liquid between the battery monomers and the elastic buffering support arm, the influence of collision impact on the battery can be greatly reduced, and the safety of the battery system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy systems, and in particular to a high-efficiency heat dissipation battery pack. Background Art

[0002] With the development of new energy vehicles, many special vehicles are increasingly powered by electricity, and their power requirements are also increasing. Since high-power battery packs generate severe heat, more efficient heat dissipation design is required to ensure the reliable operation of the battery system.

[0003] In addition, after an electric vehicle collides, the impact of the collision may cause the battery to break and leak. The electrolyte of the lithium-ion battery is a flammable organic liquid. If electric sparks or arcs occur at this time, there is a risk of the entire power battery system being ignited.

[0004] At present, the anti-collision design of the battery pack only provides a buffer component on the inner wall of the battery box shell. However, under the impact of a collision, the battery cells will still be squeezed, causing accidents such as battery electrolyte leakage. Utility Model Content

[0005] The utility model aims to provide a highly efficient heat dissipation battery pack to solve the problems of serious heating of the battery pack and weak anti-collision and impact capability in the prior art.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] The utility model provides a high-efficiency heat dissipation battery pack, comprising a plurality of battery cells, two adjacent battery cells are connected via elastic buffer arms, and the battery cells are partially immersed in cooling liquid.

[0008] As the preferred technical solution:

[0009] The battery cells are arranged at intervals in a battery box housing, and the battery box housing contains the coolant.

[0010] As the preferred technical solution:

[0011] A pole cap is installed on one side of the battery cell with the electrode. The pole cap is provided with an electrode hole. The opening position of the electrode hole corresponds to the position of the electrode. The electrode hole is used for the electrode to pass through.

[0012] As the preferred technical solution:

[0013] The interior of the polar cap is filled with waterproof sealant.

[0014] As the preferred technical solution:

[0015] The elastic buffer support arm and the pole cap are insulating components.

[0016] As the preferred technical solution:

[0017] The elastic buffer support arm is a rubber support arm, and the pole cap is a rubber pole cap.

[0018] As the preferred technical solution:

[0019] Both ends of the rubber support arm are connected with rubber suction cups, and the rubber suction cups are adsorbed on the surface of the battery cell.

[0020] As the preferred technical solution:

[0021] The cooling liquid is deionized water.

[0022] As the preferred technical solution:

[0023] The battery box housing is a box body with an open top. A rubber sealing plate is installed on the top of the battery box housing, and the rubber sealing plate is used to package the battery pack.

[0024] As the preferred technical solution:

[0025] The rubber sealing plate is provided with a plurality of through holes, and the positions of the through holes correspond to the positions of the electrodes on the battery cells.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0027] The utility model greatly improves the heat dissipation efficiency of the battery pack, and greatly reduces the impact of collisions and the like on the battery pack, effectively buffers the impact of collisions, improves the anti-collision impact capability of the battery pack, and improves the safety of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the high-efficiency heat dissipation battery pack described in Example 1.

[0029] Figure 2 This is a schematic diagram of the connection of the battery cell described in Example 1.

[0030] Figure 3 This is a schematic diagram of the external structure of the high-efficiency heat dissipation battery pack described in Example 1.

[0031] Icon: 1-battery box shell, 2-battery cell, 201-electrode, 3-rubber support arm, 4-rubber suction cup, 5-rubber pole cap, 6-rubber sealing plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] like Figure 1-Figure 3 As shown, this embodiment proposes an efficient heat dissipation battery pack, including a battery box shell 1, wherein the battery box shell 1 is a box with an open top, and a plurality of battery cells 2 are arranged in an array in the battery box shell 1, and two battery cells 2 adjacent to each other in the longitudinal direction and two battery cells adjacent to each other in the transverse direction are connected by rubber arms 3, and both ends of the rubber arms 3 are connected to rubber suction cups 4, and the rubber suction cups 4 are strongly adsorbed on the surface of the battery cells 2.

[0035] The top of the battery cell 2 has an electrode 201, and the surface of the battery cell 2 with the electrode 201 is installed with a rubber pole cap 5, and the rubber pole cap 5 is provided with an electrode hole, and the opening position of the electrode hole corresponds to the position of the electrode 201, and the electrode hole is used for the electrode 201 to pass through, so that the electrode 201 can be electrically connected later. The rubber pole cap 5 is filled with waterproof sealant. In this embodiment, the surface of the battery cell 2 with the electrode 201 is sealed in the rubber pole cap 5 by heat sealing.

[0036] Deionized water is contained in the battery box housing 1, and the spaces between the battery cells 2 are filled with deionized water. The battery cells 2 are partially immersed in the deionized water, and the water level of the deionized water is near the rubber pole caps 5 of the battery cells 2. After all the battery cells 2 are arranged and connected through the rubber suction cups 4 and the rubber arms 3, the spaces between the battery cells 2 are filled with deionized water.

[0037] The battery pack is then packaged. A rubber sealing plate 6 is installed on the top of the battery box shell 1. The rubber sealing plate 6 is used to package the battery pack. The rubber sealing plate 6 is provided with a plurality of through holes. The positions of the through holes correspond to the positions of the electrodes 201 on each of the battery cells 2, so as to facilitate electrical connection and other operations after packaging.

[0038] The utility model immerses the battery cell 2 directly in the coolant (deionized water), which greatly improves the heat dissipation efficiency; the double buffering of the coolant and the rubber material (rubber suction cup 4 and rubber support arm 3) between the battery cells 2 can greatly reduce the impact of collision on the battery.

[0039] The utility model is used for new energy vehicles and other scenarios where battery packs are used for heat dissipation, which greatly improves the heat dissipation efficiency of the battery system. At the same time, the heat dissipation mode can effectively buffer collision impacts and avoid accidents such as electrolyte leakage caused by collisions. It has important practical significance for new energy vehicles, especially special vehicles.

[0040] The present invention is not limited to the rubber support arm 3 and the rubber suction cup 4 described in the present embodiment, and elastic buffers made of other insulating materials may also be used.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-efficiency heat dissipation battery pack, characterized in that: It comprises a plurality of battery cells, two adjacent battery cells are connected by elastic buffer arms, and the battery cells are partially immersed in the coolant; A pole cap is installed on one side of the battery cell with the electrode, and an electrode hole is opened on the pole cap. The opening position of the electrode hole corresponds to the position of the electrode, and the electrode hole is used for the electrode to pass through; The interior of the polar cap is filled with waterproof sealant; The elastic buffer support arm and the pole cap are insulating components; The elastic buffer support arm is a rubber support arm, and the pole cap is a rubber pole cap.

2. The high-efficiency heat dissipation battery pack according to claim 1, characterized in that: The battery cells are arranged at intervals in a battery box housing, and the battery box housing contains the coolant.

3. The high-efficiency heat dissipation battery pack according to claim 1, characterized in that: Both ends of the rubber support arm are connected with rubber suction cups, and the rubber suction cups are adsorbed on the surface of the battery cell.

4. The high-efficiency heat dissipation battery pack according to claim 1, characterized in that: The cooling liquid is deionized water.

5. The high-efficiency heat dissipation battery pack according to claim 2, characterized in that: The battery box housing is a box body with an open top. A rubber sealing plate is installed on the top of the battery box housing, and the rubber sealing plate is used to package the battery pack.

6. The high-efficiency heat dissipation battery pack according to claim 5, characterized in that: The rubber sealing plate is provided with a plurality of through holes, and the positions of the through holes correspond to the positions of the electrodes on the battery cells.

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