CN212209611U

CN212209611U - Battery pack for vehicle and vehicle

Info

Publication number: CN212209611U
Application number: CN202021222915.4U
Authority: CN
Inventors: 吉壮壮; 李建昌; 臧楠; 许晓丰
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2020-12-22
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a battery package and vehicle for vehicle, this battery package includes: a plurality of battery module, a plurality of battery module set up side by side at the horizontal direction, and every battery module includes: the supporting structure is provided with an installation cavity and is provided with a first circulating flow channel; the battery cell is arranged in the installation cavity, and the first circulating flow channel is wound on the periphery of the battery cell; and the liquid supply unit is connected with the first circulating flow channel of each battery module, and circularly and continuously conveys liquid to the first circulating flow channel so as to heat or radiate the battery core. According to the utility model discloses a battery package for vehicle, through set up first circulation runner on bearing structure, utilize the circulation fluid in the first circulation runner to heat or dispel the heat to the periphery of electric core to guarantee that the periphery of electric core can be by even effectual heating or heat dissipation, reduce the difference in temperature between the battery module, and then improve the charge and discharge ability of battery package.

Description

Battery pack for vehicle and vehicle

Technical Field

The utility model relates to a battery technology field, in particular to a battery package and vehicle for vehicle.

Background

The power battery is used as a power source of the new energy automobile, and the performance of the power battery is important for the endurance mileage and the power performance of the new energy automobile. In order to ensure normal charging and discharging of the power battery, the power battery needs to be heated in a low-temperature environment, and the heat of the power battery needs to be dissipated in a high-temperature environment. However, the heating and heat release capacities of the power battery in the related art are greatly different from each other, resulting in a large temperature difference among the parts of the power battery.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, an object of the embodiments of the present invention is to provide a battery pack for a vehicle, which has a small temperature difference between battery modules of the battery pack, and the battery pack can maintain a stable discharging capability in a low temperature environment.

The utility model discloses still provide a vehicle that has above-mentioned battery package, the dynamic performance of this vehicle is good, and the mileage is long.

According to the utility model discloses a battery package for vehicle, include: a plurality of battery module, it is a plurality of battery module sets up side by side at the horizontal direction, every battery module includes: the supporting structure is provided with an installation cavity and is provided with a first circulating flow channel; the battery cell is arranged in the installation cavity, and the first circulating flow channel is wound on the periphery of the battery cell; and the first circulating flow channel of each battery module is connected with the liquid supply unit, and the liquid supply unit circularly and continuously conveys liquid to the first circulating flow channel so as to heat or radiate the battery core.

According to the utility model discloses a battery package for vehicle, through set up first circulation runner on bearing structure, utilize the circulation fluid in the first circulation runner to heat or dispel the heat to the periphery of electric core to guarantee that the periphery of electric core can be by even effectual heating or heat dissipation, reduce the difference in temperature between the battery module, and then improve the charge and discharge ability of battery package.

In addition, according to the battery pack for a vehicle of the above embodiment of the present invention, the following additional technical features may also be provided:

according to some embodiments of the invention, the first circulation flow channel has an inlet and an outlet, the liquid supply unit comprises: the water-cooling plate, the water-cooling plate is formed with second circulation runner, second circulation runner has feed liquor interface and goes out liquid interface and multiunit and send the liquid interface, every group send the liquid interface to have and send liquid mouth and return the liquid mouth, send the liquid mouth with the inlet is connected, return the liquid mouth with the liquid outlet is connected.

In an alternative embodiment, the plurality of sets of liquid feeding interfaces are located on the same side of the water cooling plate.

In a further optional embodiment, the liquid feeding port of each group of the liquid feeding ports is located in a first horizontal direction, and the liquid returning port of each group of the liquid feeding ports is located in a second horizontal direction.

In an optional example, the water cooling plate is arranged opposite to the support structure of the plurality of battery modules in the vertical direction.

In a further optional example, the liquid inlet ports and the liquid outlet ports of the water cooling plate are arranged at intervals in the width direction, and the liquid feeding ports and the liquid returning ports of each group of the liquid feeding ports are distributed in the length direction of the water cooling plate.

In a specific embodiment of the present invention, the projection of the water cooling plate in the horizontal direction is greater than a plurality of the projection of the battery module in the horizontal direction.

According to the utility model discloses a some embodiments, the second circulation runner includes a plurality of parallelly connected U type runners that set up, a plurality of U type runners the import communicate with each other and simultaneously with the feed liquor interface intercommunication, a plurality of U type runners the export communicate with each other and simultaneously with go out liquid interface intercommunication.

According to the utility model discloses a few embodiments, the inlet with the liquid outlet is equipped with first connecting piece, send the liquid mouth with it is equipped with the second connecting piece to return the liquid mouth, first connecting piece with second connecting piece threaded connection.

According to the utility model discloses the vehicle includes the battery package of above-mentioned embodiment, because according to the utility model discloses the electric core of battery package can be heated or dispel the heat by the even, and the charge-discharge ability of battery package is strong. Therefore, according to the utility model discloses the dynamic performance of vehicle is good, and the mileage is long.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of an angle of a battery pack according to some embodiments of the present invention;

FIG. 2 is a schematic view of another angle of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 at yet another angle;

fig. 4 is a schematic structural view of a battery module according to some embodiments of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 at another angle;

FIG. 6 is a schematic view of the structure of FIG. 4 at another angle;

FIG. 7 is a perspective view of the support structure of FIG. 4;

FIG. 8 is a schematic view of the water-cooled panel of FIG. 4;

FIG. 9 is a schematic view of the water-cooled plate of FIG. 4 at another angle;

fig. 10 is a schematic view of a second circulation flow path in a water cooled plate according to some embodiments of the present invention.

Reference numerals:

a battery pack 100;

a battery module 10; a support structure 11; a mounting cavity 111; a liquid inlet 1121; a liquid outlet 1122; a battery cell 12; a first circulation flow path 13;

a water-cooling plate 20; a second circulation flow passage 21; a liquid inlet port 211; a liquid outlet interface 212; a liquid feeding port 213; a liquid feed port 2131; a liquid return port 2132;

a first connecting member 31; a second connecting member 32.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The power battery is used as a power source of the new energy automobile, and the performance of the power battery is important for the endurance mileage and the power performance of the new energy automobile. In order to ensure normal charging and discharging of the power battery, the power battery needs to be heated in a low-temperature environment, and the heat of the power battery needs to be dissipated in a high-temperature environment. However, the heating and heat release capacities of the power battery in the related art are greatly different from each other, resulting in a large temperature difference among the parts of the power battery. Therefore, the present application is directed to solving the above technical problems.

A battery pack 100 for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1 to 10. The battery pack 100 includes: a plurality of battery modules 10, and a liquid supply unit.

As shown in fig. 1 and 2, the battery pack 100 includes a plurality of battery modules 10, and the plurality of battery modules 10 are arranged side by side in a horizontal direction. That is, the battery pack 100 includes two or more battery modules 10, and the vehicle is supplied with electric power through the plurality of battery modules 10.

Each battery module 10 includes a support structure 11 and a cell 12, the support structure 11 constitutes an installation cavity 111, the cell 12 is arranged in the installation cavity 111, and a first circulation flow channel 13 formed by the support structure 11 winds the periphery of the cell 12. That is, the support structure 11 functions to support the battery cell 12, and forms a circulation flow channel inside the support structure 11, and the battery cell 12 is heated or cooled by the fluid in the circulation flow channel. Wherein, as shown in fig. 7, the supporting structure 11 may be a cavity structure with one side open. It should be understood that the above description is intended to be illustrative, and not restrictive, of embodiments of the invention.

The first circulation flow channel 13 of each battery module 10 is connected to a liquid supply unit, so that liquid can be continuously and cyclically supplied to the first circulation flow channel 13 through the liquid supply unit to heat or dissipate heat from the battery cells 12. In other words, the liquid flows back and forth between the liquid supply unit and the first circulation flow channel 13, so that the liquid in the first circulation flow channel 13 is continuously replaced, and the heat exchange efficiency between the first circulation flow channel 13 and the surface of the battery cell 12 is improved.

The first circulating flow channels 13 may be distributed on each side surface, and/or bottom surface, and/or top surface of the battery cell 12, so as to ensure that the periphery of the battery cell 12 may be uniformly and effectively heated or cooled, thereby improving the charging and discharging capability of the battery pack 100. Because each battery module 10 has an independent support structure 11, each battery cell 12 can be uniformly heated or cooled at the same time, so that the temperature difference between the plurality of battery modules 10 is small.

In short, according to the utility model discloses a battery package 100 for vehicle, through set up first circulation runner 21 on bearing structure 11, utilize the circulation fluid in first circulation runner 21 to heat or dispel the heat to the periphery of electric core 12 to guarantee that the periphery of electric core 12 can be by even effectual heating or heat dissipation, reduce the difference in temperature between battery module 10, and then improve battery package 100's charge-discharge capacity.

In some embodiments of the present invention, the first circulation flow channel 13 has a liquid inlet 1121 and a liquid outlet 1122, and the liquid supply unit includes: the water cooling plate 20, the water cooling plate 20 is formed with a second circulation flow channel 21, the second circulation flow channel 21 has a liquid inlet interface 211 and a liquid outlet interface 212 and a plurality of sets of liquid feeding interfaces 213, each set of liquid feeding interfaces 213 has a liquid feeding port 2131 and a liquid returning port 2132, the liquid feeding port 2131 is connected with the liquid inlet 1121, and the liquid returning port 2132 is connected with the liquid outlet 1122. That is to say, the outside can be through liquid inlet interface 211 and play liquid interface 212 circulation constantly to water-cooling plate 20 transport liquid, and water-cooling plate 20 is through sending liquid interface 213 circulation constantly to first circulation runner 13 transport liquid to can constantly change the liquid of first circulation runner 13 and second circulation runner 21, accelerate the heat exchange efficiency of liquid and electric core 12, thereby guarantee that the periphery of electric core 12 can be by even effectual heating or heat dissipation, and then improve the charge-discharge ability of battery package 100.

In an alternative embodiment, as shown in fig. 8 in conjunction with fig. 9, the plurality of sets of liquid delivery interfaces 213 are located on the same side of the water-cooling plate 20. Therefore, the battery modules 10 can be conveniently connected with the water cooling plate 20 at the same time, the installation structure of the battery pack 100 is simplified, and the assembly efficiency of the battery pack 100 is improved.

Further optionally, the liquid feeding port 2131 of each group of liquid feeding ports 213 is located in a first horizontal direction, and the liquid returning port 2132 of each group of liquid feeding ports 213 is located in a second horizontal direction. Correspondingly, the liquid inlet 1121 of the first circulation flow channel 13 of each battery module 10 is also located in the first horizontal direction, and the liquid feeding port 2131 of the first circulation flow channel 13 of each battery module 10 is also located in the second horizontal direction.

In an alternative example, as shown in fig. 2, 3 and 5, the water-cooling plate 20 is disposed opposite to the support structure 11 of the plurality of battery modules 10 in the up-down direction. In this way, the liquid flowing in the second circulation flow channel 21 can exchange heat with the bottom surface of the support structure 11, and the first circulation flow channel 13 can be provided around the circumferential direction of the support structure 11. In other words, the first circulation flow channel 13 and the second circulation flow channel 21 respectively perform heat exchange on different parts of the support structure 11, so that each part of the battery cells 12 is uniformly heated or radiated.

In a further alternative example, as shown in fig. 8 and 9, the liquid inlet ports 211 and the liquid outlet ports 212 of the water cooling plates 20 are arranged at intervals in the width direction, and the liquid feeding ports 2131 and the liquid returning ports 2132 of each group of the liquid feeding ports 213 are distributed in the length direction of the water cooling plates 20. That is, the liquid inlet 211, the liquid outlet 212, and the liquid feeding 213 are disposed in a staggered manner in the horizontal direction, thereby facilitating the connection between the water-cooled plate 20 and the external flow path, and also facilitating the connection between the water-cooled plate 20 and the support structure 11.

In other alternative embodiments of the present invention, as shown in fig. 1-2 and 4, the projection of the water-cooling plate 20 in the horizontal direction is larger than the projection of the plurality of battery modules 10 in the horizontal direction. That is, the heat exchange area of the water cooling plate 20 is larger than the heat exchange area of the total support structure 11 of the plurality of battery modules 10, so that the uniform heat exchange of the battery cells 12 of the plurality of battery modules 10 is ensured, and the charge and discharge capacity of the battery pack 100 is ensured.

In a further alternative embodiment, as shown in fig. 1-2 and 4, the length of the water cooling plate 20 in the horizontal direction is greater than the length of the plurality of battery modules 10 in the horizontal direction, and the liquid inlet 211 and the liquid outlet 212 are disposed at the portion of the water cooling plate 20 beyond the battery modules 10. Thus, the water-cooling plate 20 is easily connected to an external flow path, and the overall assembly efficiency of the battery pack 100 is improved.

In other optional embodiments of the present invention, as shown in fig. 10, the second circulation flow channel 21 includes a plurality of U-shaped flow channels disposed in parallel, inlets of the plurality of U-shaped flow channels are communicated with each other and simultaneously communicated with the liquid inlet 211, and outlets of the plurality of U-shaped flow channels are communicated with each other and simultaneously communicated with the liquid outlet 212. In other words, a plurality of independent flow channels are distributed in the water cooling plate 20, and inlets and outlets of the independent flow channels are converged, so that the water cooling plate 20 only needs to be provided with one liquid inlet interface 211 and one liquid outlet interface 212 relative to an external flow path, on one hand, the heat exchange area of the water cooling plate 20 is increased, on the other hand, the connection interface of the water cooling plate 20 is also simplified, and the assembly efficiency of the battery pack 100 is improved.

In other alternative embodiments of the present invention, as shown in fig. 2-7, the liquid inlet 1121 and the liquid outlet 1122 are provided with a first connecting member 31, the liquid feeding port 2131 and the liquid returning port 2132 are provided with a second connecting member 32, and the first connecting member 31 is in threaded connection with the second connecting member 32. The support structure 11 of each battery module 10 may be connected to the water-cooling plate 20, and then the battery cells 12 are placed in the mounting cavities 111 of the support structure 11. In addition, the connection surface of the first connection member 31 and the second connection member 32 is provided with a sealing ring, thereby preventing water from leaking.

According to the utility model discloses the vehicle includes the battery package 100 of above-mentioned embodiment, because according to the utility model discloses battery package 100's electric core 12 can be heated or dispel the heat by the even, and battery package 100's charge-discharge ability is strong. Therefore, according to the utility model discloses the dynamic performance of vehicle is good, and the mileage is long.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery pack for a vehicle, comprising:

a plurality of battery module, it is a plurality of battery module sets up side by side at the horizontal direction, every battery module includes:

the supporting structure is provided with an installation cavity and is provided with a first circulating flow channel;

the battery cell is arranged in the installation cavity, and the first circulating flow channel is wound on the periphery of the battery cell;

and the first circulating flow channel of each battery module is connected with the liquid supply unit, and the liquid supply unit circularly and continuously conveys liquid to the first circulating flow channel so as to heat or radiate the battery core.

2. The battery pack for a vehicle according to claim 1, wherein the first circulation flow channel has an inlet port and an outlet port, and the liquid supply unit includes:

the water-cooling plate, the water-cooling plate is formed with second circulation runner, second circulation runner has feed liquor interface and goes out liquid interface and multiunit and send the liquid interface, every group send the liquid interface to have and send liquid mouth and return the liquid mouth, send the liquid mouth with the inlet is connected, return the liquid mouth with the liquid outlet is connected.

3. The battery pack for a vehicle according to claim 2, wherein the plurality of sets of the liquid feeding ports are located on the same side of the water-cooling plate.

4. The battery pack for a vehicle according to claim 3, wherein the liquid feeding port of each group of the liquid feeding ports is located in a first horizontal direction, and the liquid returning port of each group of the liquid feeding ports is located in a second horizontal direction.

5. The battery pack for a vehicle according to claim 4, wherein the water-cooling plate is disposed opposite to a support structure of the plurality of battery modules in an up-down direction.

6. The battery pack for the vehicle according to claim 5, wherein the liquid inlet port and the liquid outlet port of the water cooling plate are arranged at intervals in the width direction, and the liquid feeding port and the liquid returning port of each group of the liquid feeding ports are distributed in the length direction of the water cooling plate.

7. The battery pack for the vehicle according to claim 6, wherein a projection of the water cooling plate in a horizontal direction is larger than a projection of the plurality of battery modules in the horizontal direction.

8. The battery pack for the vehicle according to claim 2, wherein the second circulation flow path includes a plurality of U-shaped flow paths arranged in parallel, inlets of the plurality of U-shaped flow paths are communicated with each other and simultaneously communicated with the liquid inlet port, and outlets of the plurality of U-shaped flow paths are communicated with each other and simultaneously communicated with the liquid outlet port.

9. The battery pack for a vehicle according to claim 2, wherein the liquid inlet and the liquid outlet are provided with a first connecting member, the liquid feed port and the liquid return port are provided with a second connecting member, and the first connecting member is screwed with the second connecting member.

10. A vehicle characterized by comprising the battery pack for a vehicle according to any one of claims 1 to 9.