CN211376703U - Fast cooling battery case - Google Patents

Abstract

The utility model discloses a battery box capable of rapidly dissipating heat, which comprises a box body, a battery pack is arranged in the box body, the battery pack comprises a plurality of battery cells arranged side by side, and radiating fins are arranged between the battery cells and the battery cells. The box body is provided with a heat dissipation hole, one end of the heat dissipation fin is connected with the battery core, and the other end protrudes through the heat dissipation hole, and the heat generated by the battery core is transmitted and dissipated through the heat dissipation fin. The battery box of the utility model that can rapidly dissipate heat has simple structure and ingenious design, adopts heat dissipation fins to separate the battery core from the battery core, and utilizes the heat conduction part to transfer the heat generated by the battery core, thereby reducing the heat accumulation inside the battery core. At the same time, the heat dissipation part is used to dissipate the heat, which has high heat dissipation efficiency and good heat dissipation effect; in addition, by connecting the cells in different series/parallel, the parameters of the battery box can be changed, and the versatility is strong.

Description

Fast cooling battery case

technical field

The utility model relates to a battery box, in particular to a battery box that can quickly dissipate heat.

Background technique

The battery box is a key component of an electric bus and plays a very important role in providing power for the electric vehicle. The heat dissipation performance of the battery box has always been a difficult problem to solve in the industry. The structure of the modules in the existing battery box is directly and closely attached to the cells, and then the positive and negative electrodes of the multiple cells are welded and connected by laser welding. However, this structural arrangement has the following problems:

1. There is heat accumulation between the cells, which makes it difficult to conduct internal heat and the temperature is too high;

2. Heat transfer through the poles of the cell or the bottom of the cell, and the heat conduction rate of the cell is slow;

3. The structure of battery boxes with different capacities cannot be universal, and the design and processing costs are high.

Therefore, it is necessary to design a battery box with high heat dissipation efficiency and good versatility.

Utility model content

The utility model provides a battery box capable of rapidly dissipating heat, which has the effects of high heat dissipation efficiency and good versatility. The specific technical solutions are as follows:

A battery box that can quickly dissipate heat, which includes a box body, a battery pack is housed in the box body, the battery pack includes a plurality of battery cells arranged side by side, radiating fins are arranged between the battery cells and the battery cores, and the box body is provided with heat dissipation fins. A heat dissipation hole is provided, one end of the heat dissipation fin is connected with the battery core, and the other end extends through the heat dissipation hole, and the heat generated by the battery core is transmitted and dissipated through the heat dissipation fin.

Further, the heat dissipation fin includes a heat conduction part and a heat dissipation part, the heat conduction part and the heat dissipation part are connected, the heat conduction part is connected with the electric core of the battery, and the heat dissipation part protrudes through the heat dissipation hole on the box body.

Further, the size of the heat-conducting portion is the same as the size of the surface of the cell in contact, so as to facilitate the transfer of the heat of the cell to the heat-dissipating portion.

Further, a limiting rib is arranged at the position where the heat conduction part and the heat dissipation part are connected, and the limiting rib can limit the length of the heat dissipation part extended, so as to facilitate the fixing of the heat dissipation fins.

Further, the box body includes an upper box body and a lower box body, the upper box body is connected with the lower box body, the battery pack is accommodated in the upper box body and the lower box body, the lower box body is provided with heat dissipation holes, and the heat dissipation fins extend through the heat dissipation holes. out.

Further, the position where the heat dissipation fins are connected to the lower case is a welding part, and the welding part is laser welded, so that the heat dissipation fins are more firmly fixed.

Further, the heat dissipation holes are arranged at the bottom of the lower case, the bottom of the lower case is connected to the bottom case, the bottom case is provided with cooling holes, and the bottom case is provided with a cooling mechanism, which can dissipate the heat of the heat dissipation fins.

Further, the refrigerating mechanism is a refrigerating fan, and the refrigerating fan blows the cold air to the surface of the radiating part and then discharges it through the refrigerating hole, so as to dissipate the heat of the radiating part.

Further, the heat dissipation fins are integrally formed.

Further, a series connection piece and a parallel connection piece are used between the electric core and the electric core, and the series connection piece and the parallel connection piece are made of aluminum.

The battery box of the utility model that can quickly dissipate heat has simple structure and ingenious design, adopts heat dissipation fins to separate the battery core from the battery core, and uses the heat conduction part to transfer the heat generated by the battery core to reduce the heat accumulation inside the battery core. At the same time, the heat dissipation part is used to dissipate heat, which has high heat dissipation efficiency and good heat dissipation effect; in addition, by connecting the cells in different series/parallel, the parameters of the battery box can be changed, and the versatility is strong.

Description of drawings

1 is an exploded view of a battery box capable of rapidly dissipating heat according to the present invention;

2 is a perspective view of a heat dissipation fin of a battery box capable of rapidly dissipating heat according to the present invention;

3 is a perspective view of the battery pack and the lower case of the battery case that can quickly dissipate heat according to the present invention;

FIG. 4 is a schematic diagram of the connection between the battery pack and the lower box of the battery box that can quickly dissipate heat according to the present invention;

FIG. 5 is a schematic diagram of the connection between the cells of the battery box capable of rapidly dissipating heat, the series connection piece and the parallel connection piece of the present invention.

In the figure: upper case-10, lower case-20, bottom case-30, parallel connection piece-40, series connection piece-50, cell-60, cooling fin-70, heat-conducting part-71, heat-dissipating part -72, welding section -73.

Detailed ways

In order to better understand the purpose, function and specific design scheme of the present invention, the battery box capable of rapidly dissipating heat of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in FIGS. 1-5 , the battery box capable of rapidly dissipating heat of the present invention includes a box body, a battery pack is housed in the box body, and the battery pack includes a plurality of battery cells 60 arranged side by side. A heat dissipation fin 70 is arranged between them, and a heat dissipation hole is arranged on the box body. One end of the heat dissipation fin 70 is connected to the battery core 60, and the other end extends through the heat dissipation hole, so that the heat generated by the battery core 60 is dissipated through the heat dissipation fin 70. out.

Specifically, as shown in FIG. 2 , the heat dissipation fin 70 includes a heat dissipation part 71 and a heat dissipation part 72 , the heat dissipation part 71 and the heat dissipation part 72 are connected, the heat dissipation part 71 is connected with the battery cell 60 , and the heat dissipation part 72 passes through the The vents protrude. It is worth noting that the size of the heat-conducting portion 71 is the same as the size of the surface of the cell 60 in contact with, so as to facilitate the transfer of the heat of the cell 60 to the heat-dissipating portion 72 . Preferably, a limiting rib is provided at the position where the heat-conducting portion 71 and the heat-dissipating portion 72 are connected, and the limiting rib can limit the extended length of the heat-dissipating portion 72 to facilitate the fixing of the heat-dissipating fins 70 . Preferably, the heat dissipation fins 70 are integrally formed.

The heat dissipation fins 70 of this embodiment are extruded from aluminum alloys, which are low in cost, light in weight, high in strength, and good in thermal conductivity, which are very suitable for the practical use environment of the present invention. It can be understood that the heat dissipation fins 70 can also be made of other materials with good thermal conductivity (eg, copper) through other processing methods.

As shown in FIGS. 1 and 3 , the case includes an upper case 10 , a lower case 20 and a bottom case 30 . The upper case 10 is connected to the lower case 20 , the battery pack is accommodated in the upper case 10 and the lower case 20 , the lower case 20 is provided with heat dissipation holes, and the heat dissipation portion 72 protrudes through the heat dissipation holes. Preferably, as shown in FIG. 4 , the connection between the heat dissipation part 72 and the lower case 20 is a welding part 73 , and the welding part 73 is welded by laser, so that the heat dissipation fins 70 are more firmly fixed.

The heat dissipation holes in this embodiment are provided at the bottom of the lower case 20, the bottom of the lower case 20 is connected to the bottom case 30, the bottom case 30 is provided with a cooling hole, and the bottom case 30 is provided with a refrigeration mechanism. It is a cooling fan, and the cooling fan blows cold air to the surface of the heat dissipation part 72 and then discharges it through the cooling holes, so as to dissipate the heat of the heat dissipation part 72 to achieve the purpose of cooling the battery cells 60 . It can be understood that the heat dissipation part 72 can also adopt other cooling methods. For example, the cooling holes of the bottom case 30 are connected such as water pipes, and water is used to cool the heat dissipation part 72 to achieve the heat dissipation effect. It is worth noting that when using water cooling for heat dissipation , Pay attention to the waterproof treatment of the battery pack to prevent the battery pack from short circuit.

As shown in FIG. 5 , the battery cells 60 and 60 are connected by a series connection piece 50 and a parallel connection piece 40 . In this embodiment, three battery cells 60 are connected in parallel and the remaining 10 battery cells 60 are connected in series. The member 50 and the parallel connection member 40 are preferably made of aluminum, which is light in weight, good in conductivity and low in cost, and is very suitable for the use environment of the present invention. Laser welding can be selected for the connection between the battery cell 60 and the series connection piece 50 and the parallel connection piece 40 , the laser welding speed is fast, and the welding effect is good. It can be understood that, those skilled in the art can change the number of parallel and series-connected cells 60 according to actual needs to change the parameters of the battery box to suit different usage requirements.

The battery box of the utility model that can quickly dissipate heat has simple structure and ingenious design, adopts heat dissipation fins to separate the battery core from the battery core, and uses the heat conduction part to transfer the heat generated by the battery core to reduce the heat accumulation inside the battery core. At the same time, the heat dissipation part is used to dissipate heat, which has high heat dissipation efficiency and good heat dissipation effect; in addition, by connecting the cells in different series/parallel, the parameters of the battery box can be changed, and the versatility is strong.

The present utility model has been further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as a limitation on the essence and scope of the present utility model. Various modifications made to the above-mentioned embodiments all belong to the protection scope of the present invention.

Claims (10)

1. A battery box that can quickly dissipate heat, characterized in that it includes a box body, a battery pack is housed in the box body, the battery pack includes a plurality of battery cells arranged side by side, and heat dissipation fins are provided between the battery cells and the battery cells. , The box body is provided with a heat dissipation hole, one end of the heat dissipation fin is connected with the battery core, and the other end extends through the heat dissipation hole, and the heat generated by the battery core is transmitted and dissipated through the heat dissipation fin. 2 . The battery box capable of rapidly dissipating heat according to claim 1 , wherein the heat dissipating fins comprise a heat conduction part and a heat sink part, the heat conduction part and the heat sink part are connected, the heat conduction part is connected with the cell of the battery, and the heat sink part passes through the box. 3 . The heat dissipation holes on the body protrude. 3 . The battery box with rapid heat dissipation according to claim 2 , wherein the size of the heat conducting portion is the same as the size of the surface of the cell in contact with, so as to facilitate the transfer of the heat of the cell to the heat dissipation portion. 4 . 4. The battery box capable of rapidly dissipating heat according to claim 2, wherein a limit rib is provided at the position where the heat conduction part and the heat sink part are connected, and the limit rib can limit the length of the heat sink part, so as to facilitate the Fixing of cooling fins. 5 . The battery case with rapid heat dissipation according to claim 1 , wherein the case body comprises an upper case body and a lower case body, the upper case body is connected with the lower case body, and the battery pack is accommodated in the upper case body and the lower case body. 6 . In the box body, the lower box body is provided with heat dissipation holes, and the heat dissipation fins protrude through the heat dissipation holes. 6 . The battery box with rapid heat dissipation as claimed in claim 5 , wherein the position where the heat dissipation fins are connected to the lower case is a welding part, and the welding part adopts laser welding to make the heat dissipation fins more stable. 7 . . 7. The battery box of claim 5, wherein the heat dissipation hole is arranged at the bottom of the lower case, the bottom of the lower case is connected to the bottom case, the bottom case is provided with a cooling hole, and the bottom case is provided with a cooling hole. A cooling mechanism is provided, and the cooling mechanism can dissipate the heat of the cooling fins. 8 . The battery box with rapid heat dissipation according to claim 7 , wherein the cooling mechanism is a cooling fan, and the cooling fan blows cold air to the surface of the heat dissipation part and then discharges it through the cooling holes, thereby dissipating the heat of the heat dissipation part. 9 . 9 . The battery box capable of rapidly dissipating heat according to claim 1 , wherein the heat dissipating fins are integrally formed. 10 . 10 . The battery box capable of rapidly dissipating heat according to claim 1 , wherein the battery cells are connected by series connecting pieces and parallel connecting pieces, and the series connecting pieces and parallel connecting pieces are made of aluminum. 11 .

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