CN210006867U - Liquid cooling device for battery pack and battery pack with same - Google Patents

Abstract

The present application provides a liquid cooling device for a battery pack and a battery pack having the same, the liquid cooling device comprising: a first liquid cooling plate, the first liquid cooling plate is connected to a battery module mounting frame; a plurality of second liquid cooling plates, a plurality of the second liquid cooling plates are arranged below the first liquid cooling plates and sequentially arranged along the length direction of the battery pack, and a plurality of the second liquid cooling plates are installed on with the casing of the battery pack; the liquid inlet pipe and the liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are respectively connected with the first liquid cooling plate and a plurality of the second liquid cooling plates, The first liquid cooling plate and a plurality of second liquid cooling plates are connected in parallel. Therefore, the first liquid cooling plate and the plurality of second liquid cooling plates can share a set of liquid inlet pipe and liquid outlet pipe, which can save the space occupied by the liquid cooling device in the battery pack, improve the safety and reliability of the battery pack, and The damaged first liquid cooling plate or the second liquid cooling plate can be replaced independently, thereby reducing the maintenance cost of the liquid cooling device.

Description

Liquid cooling device for battery pack and battery pack having the same

technical field

The present application relates to the technical field of vehicles, and in particular, to a liquid cooling device for a battery pack and a battery pack having the same.

Background technique

The liquid-cooling plate in the battery pack is mostly a large-structured liquid-cooling plate, and the temperature of multiple battery modules in the battery pack is adjusted at the same time through one.

In the related art, the volume of the liquid cooling plate is large, which is inconvenient to be arranged in the battery pack, and the maintenance cost is high when the liquid cooling plate is damaged. At the same time, the fluidity of the cooling liquid in the liquid-cooling plate with a large volume is poor, thus affecting the heat exchange effect of the liquid-cooling plate.

SUMMARY OF THE INVENTION

In view of this, the present application aims to propose a liquid cooling device for a battery pack, so as to improve the safety and reliability of the battery pack.

In order to achieve the above-mentioned purpose, the technical scheme of the present application is achieved in this way:

A liquid cooling device for a battery pack, comprising: a first liquid cooling plate connected to a battery module mounting frame; a plurality of second liquid cooling plates, a plurality of the second liquid cooling plates The plates are arranged below the first liquid cooling plate and are sequentially arranged along the length direction of the battery pack, and a plurality of the second liquid cooling plates are mounted on the casing of the battery pack; the liquid inlet pipe and the liquid outlet The liquid inlet pipe and the liquid outlet pipe are respectively communicated with the first liquid cooling plate and a plurality of the second liquid cooling plates, and the first liquid cooling plate and the second liquid cooling plates in parallel.

According to some embodiments of the present application, the first liquid cooling plate includes a first liquid inlet and a first liquid outlet, the first liquid inlet communicates with the liquid inlet pipe, and the first liquid outlet communicated with the liquid outlet pipe; the second liquid cooling plate includes a second liquid inlet port and a second liquid outlet port, the second liquid inlet port is communicated with the liquid inlet pipe, and the second liquid outlet port communicate with the liquid outlet pipe.

According to some embodiments of the present application, the liquid inlet pipe and the liquid outlet pipe are adjacent to each other, and are arranged in the middle of the width direction of the battery pack, and the liquid inlet pipe and the liquid outlet pipe are arranged along the The battery pack extends in the length direction.

According to some embodiments of the present application, the first liquid cooling plate is provided with a first mounting portion, and the first liquid cooling plate is connected to the battery module mounting frame through the first mounting portion.

According to some embodiments of the present application, the first mounting portion is configured as a concave structure toward one side of the second liquid cooling plate, and there are a plurality of the first mounting portions, and the plurality of the first mounting portions are arranged at Both sides of the first liquid cooling plate in the width direction are arranged at intervals along the length direction of the first liquid cooling plate.

According to some embodiments of the present application, the second liquid cooling plate is provided with a second mounting portion, and the second liquid cooling plate is connected to the housing through the second mounting portion.

According to some embodiments of the present application, each of the second liquid cooling plates includes a plurality of the second mounting portions, and the plurality of the second mounting portions are respectively disposed on both sides of the second liquid cooling plate in the width direction and are arranged at intervals along the length direction of the second liquid cooling plates.

According to some embodiments of the present application, the liquid cooling device further includes: a water pipe fixing member, the water pipe fixing member is suitable for connecting with the liquid inlet pipe and the liquid outlet pipe, and connecting the liquid inlet pipe and the outlet pipe The liquid pipe is fixed with the casing.

According to some embodiments of the present application, the second liquid-cooling plate includes a water pipe installation avoidance portion, and the water pipe installation avoidance portion is adapted to avoid the water pipe fixing member so as to facilitate the liquid inlet pipe through the water pipe fixing member. and the liquid outlet pipe is fixed with the casing.

Compared with the prior art, the liquid cooling device described in this application has the following advantages:

The first liquid cooling plate and multiple second liquid cooling plates can share a set of liquid inlet and outlet pipes, which can save the space occupied by the liquid cooling device in the battery pack and improve the safety and reliability of the battery pack. The damaged first liquid cooling plate or the second liquid cooling plate is replaced to reduce the maintenance cost of the liquid cooling device.

Another object of the present application is to provide a battery pack.

In order to achieve the above-mentioned purpose, the technical scheme of the present application is achieved in this way:

A battery pack, comprising: a casing, the casing includes an upper casing and a lower casing; a plurality of battery modules, the plurality of battery modules are arranged in the casing; the above-mentioned battery pack for the battery pack A liquid cooling device, the liquid cooling device is arranged below the battery module and is suitable for adjusting the temperature of the battery module.

The advantages of the battery pack and the above-mentioned liquid cooling device are the same as those of the prior art, which will not be repeated here.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a schematic structural diagram of a battery pack according to an embodiment of the application;

2 is an exploded view of the battery pack according to the embodiment of the application;

3 is a schematic structural diagram of a refrigeration device according to an embodiment of the application;

4 is a schematic structural diagram of the first liquid cooling plate according to the embodiment of the application;

FIG. 5 is a schematic structural diagram of the second liquid cooling plate according to the embodiment of the present application.

Description of reference numbers:

Battery pack 1000,

Liquid cooling device 100, casing 200, lower casing 202,

The first liquid cooling plate 10, the first liquid inlet 11, the first liquid outlet 12, the first mounting portion 13,

The second liquid cooling plate 20, the second liquid inlet 21, the second liquid outlet 22, the second installation part 23, the water pipe installation escape part 24,

The liquid inlet pipe 31 , the liquid outlet pipe 32 , and the water pipe fixing member 40 .

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The liquid cooling device 100 for the battery pack 1000 according to the embodiment of the present application includes: a first liquid cooling plate 10 , a plurality of second liquid cooling plates 20 , a liquid inlet pipe 31 and a liquid outlet pipe 32 .

The first liquid cooling plate 10 is connected to the battery module mounting frame, the plurality of second liquid cooling plates 20 are arranged below the first liquid cooling plate 10 , and the plurality of second liquid cooling plates 20 are along the length of the battery pack 1000 . The directions are arranged in sequence, and a plurality of second liquid cooling plates 20 are installed on the casing 200 of the battery pack 1000 .

It can be understood that two layers of battery modules are arranged in the battery pack 1000 , the first liquid cooling plate 10 may correspond to the upper layer of battery modules, and the second liquid cooling plate 20 may correspond to the lower layer of battery modules. Correspondingly, the temperature of the battery module can be adjusted through the first liquid cooling plate 10 and the second liquid cooling plate 20 under the premise of satisfying the arrangement requirements of the battery modules in the battery pack 1000 .

It should be noted that the battery module on the upper layer of the battery pack 1000 needs to be supported by a battery module mounting frame. The first liquid cooling plate 10 can be connected to the battery module mounting frame and cooperate with the battery module on the upper layer to facilitate the installation of the battery module. The temperature of the module is adjusted.

Further, the liquid inlet pipe 31 and the liquid outlet pipe 32 are respectively communicated with the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20, and the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 are connected in parallel. .

The liquid inlet pipe 31 can provide cooling liquid to the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20, and the cooling liquid flows into the first liquid cooling plate 10 and the second liquid cooling plate 20 through the liquid inlet pipe 31 and is The first liquid cooling plate 10 and the second liquid cooling plate 20 flow inside. The cooling liquid can flow out from the liquid outlet pipe 32 after passing through the first liquid cooling plate 10 and the second liquid cooling plate 20, so that the cooling liquid can be cooled in the liquid inlet pipe 31, the first liquid cooling plate 10, and the plurality of second liquid cooling plates. Circulate between the plate 20 and the liquid outlet pipe 32 . Therefore, the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 can share a set of liquid inlet pipes 31 and liquid outlet pipes 32 , which saves the space occupied by the liquid cooling device 100 in the battery pack 1000 .

Specifically, the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 are connected in parallel, that is, the liquid inlet pipe 31 respectively supplies cooling liquid to the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 connected thereto, and The cooling liquid in the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 may flow to the liquid outlet pipe 32 . When one or more of the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 are damaged, the damaged liquid cooling plate can be removed from the battery pack 1000, and the corresponding liquid cooling plate can be replaced. Therefore, the cost of maintaining the liquid cooling device 100 can be reduced.

According to the liquid cooling device 100 of the embodiment of the present application, the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 can share a set of liquid inlet pipes 31 and liquid outlet pipes 32 , which can save the liquid cooling device 100 in the battery pack 1000 The space occupied by the battery pack 1000 is improved, and the damaged first liquid cooling plate 10 or the second liquid cooling plate 20 can be replaced independently, thereby reducing the maintenance cost of the liquid cooling device 100 .

It should be noted that the cooling liquid may be a fluid with good heat transfer function, such as grease and water.

In some embodiments of the present application, the first liquid cooling plate 10 includes a first liquid inlet 11 and a first liquid outlet 12, the first liquid inlet 11 is communicated with the liquid inlet pipe 31, and the first liquid outlet 12 is connected to The liquid outlet pipe 32 communicates with each other. It can be understood that the cooling liquid in the liquid inlet pipe 31 enters the first liquid cooling plate 10 through the first liquid inlet 11, and flows from the first liquid outlet 12 to the liquid outlet pipe after circulating in the first liquid cooling plate 10. 32 , the circulation process of the cooling liquid in the first liquid cooling plate 10 can thus be realized, so that the temperature of the corresponding battery module can be adjusted by the first liquid cooling plate 10 .

Specifically, the second liquid cooling plate 20 includes a second liquid inlet 21 and a second liquid outlet 22 , the second liquid inlet 21 communicates with the liquid inlet pipe 31 , and the second liquid outlet 22 communicates with the liquid outlet pipe 32 . It can be understood that the cooling liquid in the liquid inlet pipe 31 enters the second liquid cooling plate 20 through the second liquid inlet 21 , and flows from the second liquid outlet 22 to the liquid outlet pipe after circulating in the second liquid cooling plate 20 . 32 , the circulation process of the cooling liquid in the second liquid cooling plate 20 can thus be realized, so that the temperature of the corresponding battery module can be adjusted by the second liquid cooling plate 20 .

It should be noted that both the first liquid cooling plate 10 and the second liquid cooling plate 20 are provided with flow channels for the cooling liquid to flow, and the cooling liquid flows in the flow channels to absorb heat.

In some embodiments of the present application, the liquid inlet pipe 31 and the liquid outlet pipe 32 are adjacent, the liquid inlet pipe 31 and the liquid outlet pipe 32 are arranged in the middle of the width direction of the battery pack 1000 , and the liquid inlet pipe 31 and the liquid outlet pipe The tube 32 extends along the length of the battery pack 1000 .

Specifically, the extending direction of the liquid inlet pipe 31 and the liquid outlet pipe 32 is the same as the arrangement direction of the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 , that is, at least a part of the liquid inlet pipe 31 and the liquid outlet pipe 32 It extends along the length direction of the battery pack 1000 . Since the heights of the first liquid cooling plate 10 and the second liquid cooling plate 20 are different, the extending directions of the liquid inlet pipe 31 and the liquid outlet pipe 32 also need to be adjusted.

Further, the battery module can be arranged on both sides of the liquid inlet pipe 31 and the liquid outlet pipe 32, and the battery module can reserve a space for arranging the liquid inlet pipe 31 and the liquid outlet pipe 32 in the middle of the casing 200. The arrangement can also effectively prevent components such as the battery module from squeezing the liquid inlet pipe 31 or the liquid outlet pipe 32 , thereby improving the safety and reliability of the battery pack 1000 .

In some embodiments of the present application, the liquid inlet pipe 31 includes a first transition section, the liquid outlet pipe 32 includes a second transition section, and both the first transition section and the second transition section are configured in a U shape, so that the first transition section is The wiring harness or other components in the housing 200 can be avoided at the second transition section, and at the same time, it is convenient to transition from the position where the second liquid cooling plate 20 is matched to the position where the first liquid cooling plate 10 is matched, and it can ensure that the cooling liquid is in the inlet. The fluidity in the liquid pipe 31 and the liquid outlet pipe 32 is sufficient.

In some embodiments of the present application, the first liquid cooling plate 10 is provided with a first mounting portion 13 , and the first liquid cooling plate 10 is connected to the battery module mounting frame through the first mounting portion 13 , thereby connecting the first liquid cooling plate 10 is fixed to the battery module mounting frame, so that the first liquid cooling plate 10 is corresponding to the battery module on the battery module mounting frame.

Further, the first mounting portion 13 is configured as a concave structure toward the side of the second liquid-cooling plate 20, so that the safety distance between the battery module and the first liquid-cooling plate 10 can be improved, and the compression of the instant noodles can be ensured at the same time. quantity.

Wherein, there are a plurality of first mounting parts 13 , and the plurality of first mounting parts 13 are arranged on both sides of the width direction of the first liquid cooling plate 10 and are arranged at intervals along the length direction of the first liquid cooling plate 10 . The arrangement of the plurality of first mounting parts 13 can improve the connection reliability between the first liquid cooling plate 10 and the battery module mounting frame.

In some embodiments of the present application, the second liquid cooling plate 20 is provided with a second mounting portion 23 , and the second liquid cooling plate 20 is connected to the housing 200 through the second mounting portion 23 , so as to connect the second liquid cooling plate 20 to the housing 200 . The casing 200 is fixed, which improves the cooperation reliability of the second liquid cooling plate 20 and the casing 200 .

Further, each second liquid cooling plate 20 includes a plurality of second mounting portions 23 , and the plurality of second mounting portions 23 are respectively disposed on both sides of the second liquid cooling plate 20 in the width direction and along the width of the second liquid cooling plate 20 . Lengthwise spaced. The arrangement of the plurality of second mounting portions 23 can improve the connection reliability between the second liquid-cooling plate 20 and the casing 200, and the positions of the second mounting portions 23 can avoid other components in the casing 200, which is convenient for The arrangement of components such as battery modules and wire harnesses in the housing 200 .

Optionally, the second mounting portion 23 is configured as a plane structure. The plane mounting structure can save the space occupied by the liquid cooling device 100 in the vertical direction, thereby reasonably reducing the height of the battery pack 1000 in the vertical direction.

In some embodiments of the present application, thermally conductive glue is disposed between the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 and the battery module, and the thermally conductive glue can be coated on the bottom of the battery module, so that the The thermal conductivity between the first liquid cooling plate 10 and the plurality of second liquid cooling plates 20 and the battery module improves the heat exchange efficiency, thereby improving the heat dissipation and heat preservation capabilities of the first liquid cooling plate 10 and the second liquid cooling plate 20 .

In some embodiments of the present application, as shown in FIG. 1 , the liquid cooling device 100 further includes: a water pipe fixing member 40 , the water pipe fixing member 40 can be connected with the liquid inlet pipe 31 and the liquid outlet pipe 32 , and the liquid inlet pipe 31 The liquid outlet pipe 32 is fixed with the casing 200 , so as to have a good fixing effect on the liquid inlet pipe 31 and the liquid outlet pipe 32 .

Further, the second liquid cold plate 20 includes a water pipe installation avoidance portion 24 , and the water pipe installation avoidance portion 24 can avoid the water pipe fixing member 40 , so as to connect the liquid inlet pipe 31 and the liquid outlet pipe 32 to the housing 200 through the water pipe fixing member 40 . fixed.

As shown in FIG. 1 , the water pipe installation avoidance portion 24 is configured as a hollow hole, and the water pipe installation avoidance portion 24 is formed on the second liquid cooling plate 20 , so that the cooling liquid is guaranteed to circulate in the second liquid cooling plate 20 on the premise of, The weight of the second liquid cold plate 20 is reasonably reduced to meet the design requirements of the battery pack 1000 being lightweight.

Specifically, the water pipe installation avoidance portion 24 can expose the casing 200, so that the water pipe fixing member 40 can be connected between the liquid inlet pipe 31, the liquid outlet pipe 32 and the casing 200, and the water pipe fixing member 40 can be installed and avoided through the water pipe The part 24 is fixed with the casing 200 , and the water pipe fixing member 40 is also fixedly connected with the liquid inlet pipe 31 and the liquid outlet pipe 32 .

It can be understood that the water pipe fixing member 40 may include various forms of cooperation with the liquid inlet pipe 31, the liquid outlet pipe 32 and the casing 200. For example, a part of the water pipe fixing member 40 can be fixed to the casing 200 through a threaded connection. Another part of the fixing member 40 can be fixed with the liquid inlet pipe 31 and the liquid outlet pipe 32 by means of snap connection or sleeve setting. The liquid outlet pipe 32 and the liquid inlet pipe 31 are spaced apart from the housing 200 , and the water pipe fixing member 40 can also play a good supporting role for the liquid inlet pipe 31 and the liquid outlet pipe 32 .

In some embodiments of the present application, the height of the liquid inlet pipe 31 and the liquid outlet pipe 32 is not higher than the height of the wiring harness in the housing 200 , so that the surface of the first liquid cooling plate 10 and the second liquid cooling plate 20 can be prevented from being damaged. The problem of short circuiting of the battery pack 1000 occurs due to condensation dripping on the wiring harness, which improves the safety and reliability of the battery pack 1000 .

The battery pack 1000 according to the embodiment of the present application includes: a casing 200 , a plurality of battery modules, and the above-mentioned liquid cooling device 100 , wherein the casing 200 includes an upper casing and a lower casing 202 , the upper casing and the lower casing 202 closes the space formed to accommodate the battery modules, and a plurality of battery modules are arranged in the casing 200 . The liquid cooling device 100 is arranged below the battery module, and the liquid cooling device 100 can adjust the temperature of the battery module.

Further, the second liquid cooling plate 20 is fixedly connected with the lower casing 202 , thereby reducing the difficulty of assembling the liquid cooling device 100 . The liquid cooling device 100 occupies a small space and is easy to be arranged in the battery pack 1000 , and the liquid cooling device 100 has high safety and reliability, which can improve the safety and reliability of the battery pack 1000 .

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of the present application. within the scope of protection.

Claims (10)

1, a liquid cooling device for battery package, its characterized in that includes:

th liquid cooling plate (10), wherein the th liquid cooling plate (10) is connected with the battery module mounting rack;

a plurality of second liquid cooling plates (20), wherein the plurality of second liquid cooling plates (20) are arranged below the th liquid cooling plate (10) and are sequentially arranged along the length direction of the battery pack (1000), and the plurality of second liquid cooling plates (20) are arranged on the shell (200) of the battery pack (1000);

the liquid inlet pipe (31) and the liquid outlet pipe (32), the liquid inlet pipe (31) and the liquid outlet pipe (32) are respectively communicated with the th liquid cooling plate (10) and the second liquid cooling plates (20), and the th liquid cooling plate (10) and the second liquid cooling plates (20) are connected in parallel.

2. The liquid cooling apparatus for a battery pack as claimed in claim 1, wherein the th liquid cooling plate (10) comprises a th liquid inlet (11) and a th liquid outlet (12), the th liquid inlet (11) is communicated with the liquid inlet pipe (31), and the th liquid outlet (12) is communicated with the liquid outlet pipe (32);

the second liquid cooling plate (20) comprises a second liquid inlet (21) and a second liquid outlet (22), the second liquid inlet (21) is communicated with the liquid inlet pipe (31), and the second liquid outlet (22) is communicated with the liquid outlet pipe (32).

3. The liquid cooling device for battery packs according to claim 2, wherein the liquid inlet pipe (31) and the liquid outlet pipe (32) are adjacent and arranged at a middle of a width direction of the battery pack (1000), and the liquid inlet pipe (31) and the liquid outlet pipe (32) extend in a length direction of the battery pack (1000).

4. The liquid cooling apparatus for a battery pack as claimed in claim 1, wherein the th liquid cold plate (10) is provided with a th mounting portion (13), and the th liquid cold plate (10) is connected to the battery module mounting bracket through the th mounting portion (13).

5. The liquid cooling apparatus for a battery pack according to claim 4, wherein the th mounting part (13) is configured to be concave toward the side of the second liquid cooling plate (20), and the th mounting part (13) is plural, and plural th mounting parts (13) are arranged on both sides of the th liquid cooling plate (10) in the width direction and are arranged at intervals along the length direction of the th liquid cooling plate (10).

6. The liquid cooling device for the battery pack according to claim 1, wherein the second liquid cooling plate (20) is provided with a second mounting portion (23), and the second liquid cooling plate (20) is connected to the housing (200) through the second mounting portion (23).

7. The liquid cooling device for the battery pack according to claim 6, wherein each of the second liquid cooling plates (20) includes a plurality of second mounting portions (23), and the plurality of second mounting portions (23) are respectively disposed on two sides of the second liquid cooling plate (20) in the width direction and are arranged at intervals along the length direction of the second liquid cooling plate (20).

8. The liquid cooling apparatus for a battery pack of claim 1, further comprising: the water pipe fixing piece (40), the water pipe fixing piece (40) is suitable for being connected with the liquid inlet pipe (31) and the liquid outlet pipe (32) and fixing the liquid inlet pipe (31) and the liquid outlet pipe (32) with the shell (200).

9. The liquid cooling device for battery packs as claimed in claim 8, wherein the second liquid cooling plate (20) comprises a water pipe mounting relief portion (24), the water pipe mounting relief portion (24) being adapted to relieve the water pipe fixing member (40) so as to fix the liquid inlet pipe (31) and the liquid outlet pipe (32) with the housing (200) through the water pipe fixing member (40).

10, A battery pack, comprising:

a housing (200), the housing (200) comprising an upper housing and a lower housing (202);

a plurality of battery modules arranged within the case (200);

a liquid cooling device (100), said liquid cooling device (100) being a liquid cooling device (100) for a battery pack (1000) according to any of claims 1-9, said liquid cooling device (100) being arranged below said battery module and adapted for temperature regulation of said battery module.

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