CN218919042U - Battery heat exchanger, battery pack, thermal management system and vehicle - Google Patents

Abstract

The utility model discloses a battery heat exchanger, a battery pack, a thermal management system and a vehicle, wherein the battery heat exchanger comprises: the heat exchange plate comprises a heat exchange plate, a first collecting pipe and a second collecting pipe. The heat exchange plate is provided with micro-channels which are spaced in the width direction of the heat exchange plate, and each micro-channel penetrates through the heat exchange plate in the length direction of the heat exchange plate; the first collecting pipe and the second collecting pipe are respectively arranged at two ends of the length direction of the heat exchange plate and extend along the width direction of the heat exchange plate, and two ends of each micro-channel on the heat exchange plate in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe. The flow channel of the battery heat exchanger is in a one-way trend, so that the length of the cooling medium along the heat exchange plate is effectively shortened, the flow channel of the cooling medium is shortened, the resistance along the way is reduced, and the temperature uniformity of the heat exchange plate is effectively enhanced. In addition, the heat exchange plate is of a plate-shaped structure, so that the heat exchange area of the battery heat exchanger is increased, the heat exchange quantity is greatly improved, and the temperature extreme value and the temperature difference of the power battery under the extreme working conditions such as quick charge are reduced.

Description

Battery heat exchanger, battery pack, thermal management system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a battery heat exchanger, a battery pack, a thermal management system and a vehicle.

Background

In the related art, in order to ensure the working reliability of the battery pack, a cold plate heat exchanger is arranged in the battery pack, but the existing cold plate heat exchanger has the problems of low heat exchange capacity, large volume, heavy weight, high cost, complex assembly and the like, and the precious Z-direction space of the whole vehicle is seriously backlogged.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery heat exchanger which effectively shortens the length of the cooling medium along the heat exchange plate, enhances the temperature uniformity of the heat exchange plate and has large heat exchange area.

The utility model further provides a battery pack, which comprises the battery heat exchanger.

The utility model also provides a thermal management system which comprises the battery pack.

The utility model also provides a vehicle comprising the thermal management system.

According to an embodiment of the utility model, a battery heat exchanger includes: a heat exchange plate having a plurality of micro channels spaced apart in a width direction of the heat exchange plate, each of the micro channels penetrating the heat exchange plate in a length direction of the heat exchange plate; the heat exchange plate comprises a first collecting pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are respectively arranged at two ends of the length direction of the heat exchange plate and extend along the width direction of the heat exchange plate, and two ends of each micro-channel on the heat exchange plate in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe.

According to the battery heat exchanger provided by the embodiment of the utility model, the heat exchange plate is provided with the plurality of micro-channels which are spaced apart in the width direction of the heat exchange plate, each micro-channel penetrates through the heat exchange plate along the length direction of the heat exchange plate, and the first collecting pipe and the second collecting pipe are respectively arranged at the two ends of the heat exchange plate in the length direction, so that the two ends of each micro-channel in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe, a cooling medium flows into one of the first collecting pipe and the second collecting pipe and then flows into the plurality of micro-channels, and finally flows into the other of the first collecting pipe and the second collecting pipe and flows out of the battery heat exchanger.

In addition, the battery heat exchanger according to the embodiment of the utility model can also have the following additional technical characteristics:

in some embodiments of the present utility model, a first opening is provided on a peripheral wall of the first collecting pipe, and an end of the heat exchange plate, which is far away from the second collecting pipe, is inserted into the first collecting pipe through the first opening.

In some embodiments of the present utility model, a second opening is provided on a peripheral wall of the second header, and an end of the heat exchange plate, which is far away from the first header, is inserted into the second header through the second opening.

In some embodiments of the present utility model, two ends of the first collecting pipe in the length direction are open, one end of the first collecting pipe in the length direction is provided with a first plug, and the other end is provided with an inlet joint.

In some embodiments of the utility model, a first adapter tube is disposed between the inlet fitting and the first header.

In some embodiments of the present utility model, two ends of the second collecting pipe in the length direction are open, one end of the second collecting pipe in the length direction is provided with a second plug, the other end is provided with an outlet joint, and the first plug and the second plug are arranged at opposite ends of the heat exchange plate in the width direction.

In some embodiments of the utility model, a second transfer tube is disposed between the outlet fitting and the second header.

In some embodiments of the utility model, the heat exchanger plate is a flat plate.

The battery pack comprises a battery cell assembly, wherein the battery cell assembly comprises a plurality of battery cells, and the battery cells are stacked in the thickness direction of the battery cells; according to the battery heat exchanger, the battery heat exchanger is arranged on one side of the battery cell assembly along the width direction of the battery cell.

According to the battery pack disclosed by the embodiment of the utility model, the battery heat exchanger is provided with the replacement heat plate, the heat exchange plate is provided with the plurality of micro-channels which are spaced apart in the width direction of the plate, each micro-channel penetrates through the heat exchange plate along the length direction of the heat exchange plate, and the first collecting pipe and the second collecting pipe are respectively arranged at the two ends of the heat exchange plate in the length direction, so that the two ends of each micro-channel in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe, a cooling medium flows into one of the first collecting pipe and the second collecting pipe and then flows into the plurality of micro-channels, and finally flows into the other of the first collecting pipe and the second collecting pipe and flows out of the battery heat exchanger.

According to some embodiments of the utility model, the battery module further comprises a heat conductive adhesive disposed between the battery cell assembly and the battery heat exchanger.

The heat management system according to the embodiment of the utility model comprises a refrigeration loop and the battery pack, wherein the battery heat exchanger is connected in the refrigeration loop.

According to the heat management system provided by the embodiment of the utility model, the battery pack comprises the battery heat exchanger, the battery heat exchanger is provided with the replacement heat plate, the heat exchange plate is provided with the plurality of micro-channels which are spaced apart in the width direction of the plate, each micro-channel penetrates through the heat exchange plate along the length direction of the heat exchange plate, the first collecting pipe and the second collecting pipe are respectively arranged at the two ends of the heat exchange plate in the length direction, so that the two ends of each micro-channel in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe, the refrigerant flows into one of the first collecting pipe and the second collecting pipe and then flows into the plurality of micro-channels, and finally flows into the other one of the first collecting pipe and the second collecting pipe and flows out of the battery heat exchanger, so that the flow channel of the battery heat exchanger is in a single-way, the refrigerant flow channel is effectively shortened, the on-way resistance is reduced, the temperature uniformity performance of the heat exchange plate is improved, in addition, the heat exchange area of the battery heat exchanger is greatly improved, the temperature extreme value and the temperature difference of a power battery under extreme working conditions such as quick charge is reduced, and the reliability of the battery pack and the heat management system is ensured.

The vehicle comprises the thermal management system.

According to the vehicle provided by the embodiment of the utility model, the heat management system is arranged, the battery heat exchanger is provided with the replacement heat plate, the heat exchange plate is provided with the plurality of micro-channels which are spaced apart in the width direction of the plate, each micro-channel penetrates through the heat exchange plate along the length direction of the heat exchange plate, and the first collecting pipe and the second collecting pipe are respectively arranged at the two ends of the length direction of the heat exchange plate, so that the two ends of each micro-channel are respectively communicated with the first collecting pipe and the second collecting pipe, a refrigerant flows into one of the first collecting pipe and the second collecting pipe and then flows into the plurality of micro-channels, and finally flows into the other of the first collecting pipe and the second collecting pipe and flows out of the battery heat exchanger.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is an exploded view of a battery heat exchanger according to an embodiment of the present utility model;

fig. 2 is a front view of a battery heat exchanger according to an embodiment of the present utility model;

fig. 3 is a left side view of a battery heat exchanger according to an embodiment of the present utility model;

FIG. 4 is a top view of a battery heat exchanger according to an embodiment of the utility model;

fig. 5 is a schematic view of a structure in which a heat exchange plate of a battery heat exchanger is inserted on a header according to an embodiment of the present utility model;

fig. 6 is a front view of a heat exchange plate of a battery heat exchanger according to an embodiment of the present utility model;

fig. 7 is a left side view of a heat exchange plate of a battery heat exchanger according to an embodiment of the present utility model;

fig. 8 is a top view of a heat exchange plate of a battery heat exchanger according to an embodiment of the present utility model;

FIG. 9 is an enlarged view at A in FIG. 1;

FIG. 10 is an enlarged view at B in FIG. 1;

FIG. 11 is an enlarged view at C in FIG. 1;

FIG. 12 is an enlarged view of FIG. 1 at D;

FIG. 13 is an enlarged view at E in FIG. 5;

fig. 14 is an enlarged view at F in fig. 7.

Reference numerals:

100. a battery heat exchanger;

1. a heat exchange plate; 11. a microchannel;

2. a first header; 21. a first opening; 22. an inlet fitting; 23. a first plug; 24. a first transfer tube;

3. a second header; 31. a second opening; 32. an outlet fitting; 33. a second plug; 34. a second transfer tube;

4. a cell assembly; 41. a battery cell;

5. and (5) heat-conducting glue.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery heat exchanger 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 8.

As shown in fig. 1, 5 to 8, a battery heat exchanger 100 according to an embodiment of the present utility model includes a heat exchange plate 1, a first header 2, and a second header 3.

Specifically, in the example of fig. 14, the heat exchange plate 1 has a plurality of micro-channels 11 spaced apart in the width direction of the heat exchange plate 1, each micro-channel 11 penetrating the heat exchange plate 1 in the length direction of the heat exchange plate 1; the first collecting pipe 2 and the second collecting pipe 3 are respectively arranged at two ends of the heat exchange plate 1 in the length direction and extend along the width direction of the heat exchange plate 1, and two ends of each micro channel 11 on the heat exchange plate 1 in the length direction are respectively communicated with the first collecting pipe 2 and the second collecting pipe 3. It will be appreciated that the same ends of the plurality of microchannels 11 in the length direction are each in communication with the first header 2, and the other ends are each in communication with the second header 3.

As shown in fig. 14, the length and width of each micro-channel 11 are the same, so that the uniformity of parameters such as flow velocity, flow resistance, length along the path and the like of the cooling medium in each micro-channel 11 can be ensured, and the uniformity of heat exchange capacity of the heat exchange plate 1 in the width direction can be ensured. The micro-channels 11 inside the battery packs are not limited to one specification because the arrangement of the battery cells 41 of the different battery packs is different, and the heating accords with different heat, so that the flow can be adjusted in different areas through the combination of the micro-channels 11 with different calibers, and the overall heat management requirement of the battery packs is met.

In addition, as shown in fig. 2, the first collecting pipe 2 and the second collecting pipe 3 are arranged in parallel, so that the lengths of each micro-channel 11 are the same, and the flowing states of the cooling medium in the same position in the length direction in each micro-channel 11 are substantially the same, so that the uniformity of the heat exchange capacity in the width direction of the heat exchange plate 1 is further ensured.

In the application, the flow channel of the battery heat exchanger 100 is in a single-pass trend, the cooling medium can flow in from one of the first collecting pipe 2 and the second collecting pipe 3, flow to the other of the first collecting pipe 2 and the second collecting pipe 3 along the plurality of micro-channels 11 in the heat exchange plate 1 and then flow out, so that the length of the cooling medium along the heat exchange plate 1 is effectively shortened, the flow channel of the cooling medium is shortened, the along-way resistance is reduced, and the temperature uniformity of the heat exchange plate 1 is effectively enhanced.

In addition, in this application, in combination with the examples of fig. 6, 7 and 8, the heat exchange plate 1 is of a plate structure, when the heat dissipation is performed for the electric core assembly 4, the heat exchange area between the battery heat exchanger 100 and the electric core assembly 4 is increased, the thermal resistance in the Z direction is reduced, for example, compared with the structure of a plurality of pipes in the prior art, the thermal resistance in the Z direction is improved by about 100%, the thermal resistance in the Z direction is reduced by 1%, the heat exchange amount is greatly improved, and the temperature extreme value and the temperature difference of the power battery under the extreme working conditions such as fast charge are reduced.

When the battery heat exchanger 100 is applied to a battery pack of a vehicle, the battery heat exchanger 100 and the battery cell assembly 4 are generally arranged in a height direction of the vehicle, i.e., a Z-direction, which is a height direction of the vehicle in the present application. Of course, the present application is not limited thereto, and the Z direction may be understood as an arrangement direction of the cell assembly 4 and the battery heat exchanger 100.

Alternatively, the heat exchanger plate 1 of the present application may comprise 500-800 micro-channels 11, for example 660, without limitation. It is understood that the size, number, shape and wall thickness of the micro-channels 11 and the material thereof can be adjusted according to the length, width and height of the heat exchange plate 1, and the micro-channels are all within the scope of the patent.

According to the battery heat exchanger 100 of the embodiment of the utility model, as shown in fig. 14, by arranging the replacement hot plate 1, the heat exchange plate 1 is provided with the plurality of micro-channels 11 which are spaced apart in the width direction of the heat exchange plate 1, each micro-channel 11 penetrates through the heat exchange plate 1 along the length direction of the heat exchange plate 1, and the first collecting pipe 2 and the second collecting pipe 3 are respectively arranged at two ends of the length direction of the heat exchange plate 1, so that two ends of the length direction of each micro-channel 11 are respectively communicated with the first collecting pipe 2 and the second collecting pipe 3, a cooling medium flows into one of the first collecting pipe 2 and the second collecting pipe 3 and then flows into the plurality of micro-channels 11, and finally flows into the other of the first collecting pipe 2 and the second collecting pipe 3 and flows out of the battery heat exchanger 100, the flow channel of the battery heat exchanger 100 is in a single-way, the flow channel of the cooling medium is effectively shortened, the flow channel along the path resistance is reduced, the temperature equalizing performance of the heat exchange plate 1 is improved, the heat exchange area of the battery heat exchanger 100 is greatly improved, the temperature extreme value is greatly improved, and the temperature difference of a power battery under extreme conditions such as quick charge is reduced.

In some embodiments of the present utility model, as shown in fig. 1, 5 and 13, a first opening 21 is provided in a peripheral wall of the first header 2, and an end of the heat exchange plate 1 remote from the second header 3 is inserted into the first header 2 through the first opening 21. Therefore, one end, far away from the second collecting pipe 3, of the micro-channels 11 on the heat exchange plate 1 is communicated with the first collecting pipe 2, so that the cooling medium in the first collecting pipe 2 can uniformly flow into the micro-channels 11 of the heat exchange plate 1 or the cooling medium in the micro-channels 11 can flow into the first collecting pipe 2. In addition, the connection mode that one end of the heat exchange plate 1 is inserted into the first collecting pipe 2 is adopted, so that complex assembly relation in the prior art is greatly improved, meanwhile, assembly components are reduced, the weight of the battery heat exchanger 100 is further reduced, the first collecting pipe 2 and the end of the heat exchange plate 1 can be located on the same plane, and the occupied space in the Z direction is reduced. Further, the heat exchange plate 1 is welded to the first header 2, and may be welded to a junction between the outer peripheral wall of the heat exchange plate 1 and the inner peripheral wall of the first opening 21, for example.

In the examples shown in fig. 1, 5 and 13, the first header 2 is a circular tube, and the cross section of the outer peripheral wall and the cross section of the inner peripheral wall of the first header 2 are both circular. The first opening 21 extending along the length direction of the first collecting pipe 2 is arranged on the peripheral wall of the first collecting pipe 2, the length of the first opening 21 is approximately the same as the width of the heat exchange plate 1, and one end, far away from the second collecting pipe 3, of the heat exchange plate 1 can be inserted into the first collecting pipe 2 through the first opening 21.

According to the battery heat exchanger 100 of one embodiment of the present utility model, as shown in fig. 1, 9 and 12, the second opening 31 is formed in the peripheral wall of the second header 3, and one end of the heat exchange plate 1, which is far from the first header 2, is inserted into the second header 3 through the second opening 31. Therefore, one end, far away from the first collecting pipe 2, of the micro-channels 11 on the heat exchange plate 1 is communicated with the second collecting pipe 3, so that the cooling medium in the second collecting pipe 3 can uniformly flow into the micro-channels 11 of the heat exchange plate 1 or the cooling medium in the micro-channels 11 can flow into the second collecting pipe 3. In addition, the connection mode that one end of the heat exchange plate 1 is inserted into the second collecting pipe 3 is adopted, so that complex assembly relation in the prior art is greatly improved, meanwhile, assembly components are reduced, the weight of the battery heat exchanger 100 is further reduced, the second collecting pipe 3 and the end of the heat exchange plate 1 can be located on the same plane, and the occupied space in the Z direction is reduced. Further, the heat exchange plate 1 is welded to the second header 3, and may be welded, for example, at a junction between the outer peripheral wall of the heat exchange plate 1 and the inner peripheral wall of the second opening 31.

In the example shown in fig. 9 and 12, the second header 3 is a circular tube, and the cross section of the outer peripheral wall and the cross section of the inner peripheral wall of the second header 3 are both circular. The second opening 31 extending along the length direction of the second collecting pipe 3 is arranged on the peripheral wall of the second collecting pipe 3, the length of the second opening 31 is approximately the same as the width of the heat exchange plate 1, and one end, far away from the first collecting pipe 2, of the heat exchange plate 1 can be inserted into the second collecting pipe 3 through the second opening 31.

Furthermore, one end of the heat exchange plate 1 far away from the second collecting pipe 3 is communicated with the first collecting pipe 2, and one end of the heat exchange plate 1 far away from the first collecting pipe 2 is communicated with the second collecting pipe 3, so that cooling medium flowing into the first collecting pipe 2 flows into the heat exchange plate 1 of each micro channel 11 uniformly, the amount of the cooling medium flowing into each micro channel 11 is guaranteed to be equal, the cooling medium continuously flows into the second collecting pipe 3 through the inside of the heat exchange plate 1, single-way flow of the cooling medium in the heat exchange plate 1 is realized, secondary circulation is avoided, the same along-way length and the same flow speed are guaranteed, and compared with the prior art, the arrangement mode shortens the flow channel length of the cooling medium, reduces along-way resistance and improves the temperature equalizing performance of the heat exchange plate 1.

In some embodiments of the present utility model, as shown in fig. 10 and 11, both ends of the first header 2 in the length direction are opened, one end of the first header 2 in the length direction is provided with a first plug 23, and the other end is provided with an inlet joint 22. Therefore, the structure of the first collecting pipe 2 can be simplified, a collecting cavity in the first collecting pipe 2 is limited through the first plug 23, the condition that cooling medium leaks from one end of the first collecting pipe 2 can be prevented, and in addition, the inlet joint 22 is convenient for connection between the first collecting pipe 2 and an external pipeline, so that the cooling medium in the first collecting pipe 2 flows out of the external pipeline or the cooling medium in the external pipeline flows into the first collecting pipe 2.

The inlet connector 22 and the first collecting pipe 2 may be welded, and the first plug 23 and the first collecting pipe 2 may also be welded.

Of course, the utility model is not limited thereto, and the first plug 23 and the first collecting pipe 2 may be detachably connected, and the first plug 23 has the characteristics of convenient replacement and easy assembly, and when damaged, the first plug 23 can be directly replaced without replacing the first collecting pipe 2.

Further, as shown in fig. 1 and 10, a first adapter tube 24 is provided between the inlet header 22 and the first header 2. Whereby the inlet direction of the inlet fitting 22 can be changed by means of the first transfer tube 24, thereby better facilitating the connection between the external piping and the inlet fitting 22. The cooling medium flowing into the inlet header 22 may flow into the first header 2 through the first transfer pipe 24, or the cooling medium flowing out of the first header 2 may flow into the inlet header 22 through the first transfer pipe 24 and then out to the external piping.

Alternatively, the first transfer tube 24 may be a straight tube or an elbow, when the first transfer tube 24 is an elbow, the first transfer tube 24 may be formed by sequentially connecting a plurality of straight tubes, at least two adjacent straight tubes are angled to each other, the connection between two adjacent straight tubes may be smoothly transitioned, and the first transfer tube 24 may also be an arc tube.

In the example shown in fig. 1, 2 and 10, the first transfer tube 24 is an arc-shaped tube, and the orientation of the two interfaces in the length direction of the first transfer tube 24 is set vertically, and the first transfer tube 24 is on the same horizontal plane as the heat exchange plate 1. One end of the first transfer tube 24 is connected to one end of the first header 2 which is distant from the first plug 23 in the length direction, and the other end of the first transfer tube 24 is connected to the inlet joint 22. As shown in fig. 10, the pipe diameter of the first adapter pipe 24 is substantially the same as the pipe diameter of the first header 2, but the pipe diameter of the first adapter pipe 24 is smaller than the pipe diameter of the inlet joint 22, so that the inflow area can be increased.

When the cooling medium flows from the external pipeline to the first collecting pipe 2, after passing through the inlet joint 22, the cooling medium is introduced into the first collecting pipe 2 under the guiding action of the bending radian of the first switching pipe 24, and the first switching pipe 24 can play a role in guiding and switching the cooling medium.

As shown in fig. 9, 12 and 13, the battery heat exchanger 100 according to an embodiment of the present utility model has both ends of the second header 3 in the length direction open, and one end of the second header 3 in the length direction is provided with a second plug 33 and the other end is provided with an outlet joint 32. Therefore, the structure of the second collecting pipe 3 can be simplified, a collecting cavity in the second collecting pipe 3 is limited through the second plug 33, the condition that cooling medium leaks from one end of the second collecting pipe 3 can be prevented, and in addition, the arrangement of the outlet joint 32 is convenient for the connection between the second collecting pipe 3 and an external pipeline, so that the cooling medium in the second collecting pipe 3 flows out of the external pipeline or the cooling medium in the external pipeline flows into the second collecting pipe 3.

The outlet connector 32 and the second collecting pipe 3 may be welded, and the second plug 33 and the second collecting pipe 3 may be welded.

Of course, the utility model is not limited thereto, and the second plug 33 and the second collecting pipe 3 may be detachably connected, and the second plug 33 has the characteristics of convenient replacement and easy assembly, and when damaged, the second plug 33 can be directly replaced without replacing the second collecting pipe 3.

Further, as shown in fig. 1 and 2, the first plug 23 and the second plug 33 are disposed at opposite ends of the heat exchange plate 1 in the width direction, it is understood that the inlet joint 22 and the outlet joint 32 are disposed at two opposite angles of the heat exchange plate 1, respectively, so that the length of each flow channel along the flow path is ensured to be the same, the flow resistance is the same, and only single-pass flow is performed, secondary circulation is avoided, and the problem of overheating of the refrigerant is effectively reduced. According to the battery heat exchanger 100 of one embodiment of the present utility model, the second transfer pipe 34 is provided between the outlet header 32 and the second header 3.

Further, as shown in fig. 1 and 9, a second transfer pipe 34 is provided between the outlet header 32 and the second header 3. The outlet direction of the outlet connection 32 can thus be changed by the second adapter tube 34, so that the connection between the external line and the outlet connection 32 is better facilitated. The cooling medium flowing into the outlet header 32 may flow into the second header 3 through the second transfer pipe 34, or the cooling medium flowing out of the second header 3 may flow into the outlet header 32 through the second transfer pipe 34 and then out to the external piping.

Optionally, the second transfer tube 34 may be a straight tube or an elbow, when the second transfer tube 34 is an elbow, the second transfer tube 34 may be formed by sequentially connecting a plurality of straight tubes, at least two adjacent straight tubes are angled to each other, the connection between two adjacent straight tubes may be smoothly transitioned, and the second transfer tube 34 may also be an arc tube.

In the example shown in fig. 2, the second transfer tube 34 is an arc tube, and the directions of the two interfaces in the length direction of the second transfer tube 34 are vertically set, and the second transfer tube 34 and the heat exchange plate 1 are on the same horizontal plane. One end of the second transfer tube 34 is connected to one end of the second header 3, which is distant from the second plug 33 in the length direction, and the other end of the second transfer tube 34 is connected to the outlet joint 32. As shown in fig. 2 to 4, the pipe diameter of the second transfer pipe 34 is substantially the same as the pipe diameter of the second header 3, but the pipe diameter of the second transfer pipe 34 is smaller than the pipe diameter of the outlet joint 32, whereby the outflow area can be increased.

When the cooling medium flows from the external pipeline to the second collecting pipe 3, after passing through the outlet joint 32, the cooling medium is introduced into the second collecting pipe 3 under the guiding action of the bending radian of the second transfer pipe 34, and the second transfer pipe 34 can play a role in guiding and transferring the cooling medium.

In some embodiments of the present utility model, as shown in fig. 1 and 6, the heat exchange plate 1 is a flat plate, so that the space occupied by the battery heat exchanger 100 in the Z direction can be reduced, and thus the size of the battery cell assembly 4 can be increased under the condition of the same size, so that the energy density of the battery pack is increased, and the cruising ability of the vehicle is improved. In addition, in combination with the connection mode of the first collecting pipe 2 and the second collecting pipe 3 and the heat exchange plate 1, that is, the two ends of the heat exchange plate 1 in the length direction are respectively inserted into the first opening 21 on the peripheral wall of the first collecting pipe 2 and the second opening 31 on the peripheral wall of the second collecting pipe 3, the size of the whole battery heat exchanger 100 in the Z direction can be reduced, the space occupied by the battery heat exchanger 100 in the Z direction is reduced, and the size of the battery cell assembly 4 can be increased under the condition that the sizes are the same, so that the energy density of a battery pack is increased, and the cruising ability of a vehicle is improved.

In addition, when the battery heat exchanger 100 is connected with the refrigerating circuit, the integral height difference of the heat exchange plate 1 is 0, so that smooth oil return of lubricating oil can be ensured, the problem of oil storage of the heat exchange plate 1 is basically solved, the heat exchange capacity of the battery heat exchanger 100 is ensured, and the service life of a compressor in the refrigerating circuit is prolonged.

According to the battery heat exchanger 100 of one embodiment of the present utility model, the size of the micro-channel 11 in the width direction of the heat exchange plate 1 is L1, the size of the micro-channel 11 in the thickness direction of the heat exchange plate 1 is L2, and it is satisfied that: l1 is less than L2. Therefore, the number of the micro-channels 11 can be increased under the condition that the width of the heat exchange plate 1 is fixed, so that the heat exchange capacity of the battery heat exchanger 100 is increased, and the heat dissipation effect on the battery cell assembly 4 is improved.

To sum up, the battery heat exchanger 100 of the present application includes the heat exchange plate 1, the first collecting pipe 2, the second collecting pipe 3, the first plug 23, the second plug 33, the first transfer pipe 24, the second transfer pipe 34, the inlet joint 22 and the outlet joint 32, and compared with the prior art, the battery heat exchanger has the advantages of fewer parts, easy assembly, easy foolproof, faster production beat of suppliers, higher productivity, and greatly shortened lead time. Meanwhile, the weight is lighter, the material cost is reduced, the mass of the battery pack applying the battery heat exchanger 100 is reduced, and the power performance of the whole vehicle is improved.

A battery pack according to an embodiment of the present utility model is described below.

According to an embodiment of the present utility model, a battery pack includes: the cell assembly 4 and the battery heat exchanger 100 described above.

As shown in fig. 1 and 4, the battery cell assembly 4 includes a plurality of battery cells 41, and the plurality of battery cells 41 are stacked in the thickness direction of the battery cells 41, so as to satisfy the use requirement of the battery pack. As shown in fig. 3 and 4, the battery heat exchanger 100 is disposed on one side of the battery cell assembly 4 along the width direction of the battery cell 41, and is used for dissipating heat of the battery cell assembly 4, so as to be beneficial to prolonging the service life of the battery cell assembly 4 and ensuring the reliability of the battery pack operation.

According to the battery pack of the embodiment of the utility model, by arranging the battery heat exchanger 100, the battery heat exchanger 100 is provided with the heat exchange plate 1, the heat exchange plate 1 is provided with the plurality of micro-channels 11 which are spaced apart in the width direction of the plate, each micro-channel 11 penetrates through the heat exchange plate 1 along the length direction of the heat exchange plate 1, and the first collecting pipe 2 and the second collecting pipe 3 are respectively arranged at the two ends of the heat exchange plate 1 along the length direction, so that the two ends of each micro-channel 11 along the length direction are respectively communicated with the first collecting pipe 2 and the second collecting pipe 3, a cooling medium flows into one of the first collecting pipe 2 and the second collecting pipe 3 and then flows into the plurality of micro-channels 11, and finally flows into the other one of the first collecting pipe 2 and the second collecting pipe 3 and flows out of the battery heat exchanger 100, so that the flow channel of the battery heat exchanger 100 is in a single-way, the path resistance is effectively shortened, the uniform temperature performance of the heat exchange plate 1 is improved, the heat exchange area of the battery heat exchanger 100 is greatly improved, the temperature of a power battery is greatly improved, the temperature of the battery under extreme conditions such as quick charge and the temperature and the reliability of the temperature difference pack is ensured.

In some embodiments of the present utility model, the battery pack further includes a heat conductive gel 5, and the heat conductive gel 5 is disposed between the cell assembly 4 and the battery heat exchanger 100. The heat-conducting adhesive 5 has the characteristics of heat-conducting uniformity and stable heat-conducting coefficient, so that the battery heat exchanger 100 and the battery cell assembly 4 can be better attached, heat exchange is better realized by the battery heat exchanger 100 and the battery cell assembly 4, the temperature of the battery cell assembly 4 is reduced, and the working reliability of the battery pack is ensured.

A thermal management system according to an embodiment of the present utility model is described below.

A thermal management system according to an embodiment of the utility model comprises: a refrigeration circuit and a battery pack as described above. The battery heat exchanger 100 is connected within the refrigeration circuit. Through the circulation flow of refrigerant in the refrigeration loop, the circulation cooling of the battery heat exchanger 100 can be realized, so that the heat transferred to the heat exchange piece by the battery core assembly 4 can be brought out of the battery pack, and a good heat exchange effect can be provided.

For example, the refrigeration circuit may be a refrigeration circuit of an air conditioning system of a vehicle, and the heat exchange member may be used as an evaporator, so that the refrigerant flowing in the micro-channel 11 is cooled by evaporating the refrigerant to the battery cell assembly 4, which is beneficial to improving the cooling effect of the battery cell assembly 4.

According to the thermal management system of the embodiment of the utility model, by arranging the battery pack, the battery pack comprises the battery heat exchanger 100, the battery heat exchanger 100 is provided with the replacement hot plate 1, the heat exchange plate 1 is provided with the plurality of micro channels 11 which are spaced apart in the width direction of the plate, each micro channel 11 penetrates through the heat exchange plate 1 along the length direction of the heat exchange plate 1, and the first collecting pipe 2 and the second collecting pipe 3 are respectively arranged at two ends of the heat exchange plate 1 in the length direction, so that two ends of each micro channel 11 in the length direction are respectively communicated with the first collecting pipe 2 and the second collecting pipe 3, the refrigerant flows into one of the first collecting pipe 2 and the second collecting pipe 3 and then flows into the plurality of micro channels 11, and finally flows into the other one of the first collecting pipe 2 and the second collecting pipe 3 and flows out of the battery heat exchanger 100.

A vehicle according to an embodiment of the present utility model is described below.

The vehicle comprises the thermal management system.

According to the vehicle provided by the embodiment of the utility model, the heat exchange plate 1 is arranged in the battery heat exchanger 100 by arranging the heat management system, the heat exchange plate 1 is provided with the plurality of micro-channels 11 which are spaced apart in the width direction of the plate, each micro-channel 11 penetrates through the heat exchange plate 1 along the length direction of the heat exchange plate 1, and the first collecting pipe 2 and the second collecting pipe 3 are respectively arranged at the two ends of the length direction of the heat exchange plate 1, so that the two ends of the length direction of each micro-channel 11 are respectively communicated with the first collecting pipe 2 and the second collecting pipe 3, the refrigerant flows into one of the first collecting pipe 2 and the second collecting pipe 3 and then flows into the plurality of micro-channels 11, and finally flows into the other of the first collecting pipe 2 and the second collecting pipe 3 and flows out of the battery heat exchanger 100, so that the flow channel of the battery heat exchanger 100 is in a single-way, the refrigerant flow channel is effectively shortened, the uniform temperature performance of the heat exchange plate 1 is improved, the heat exchange area of the battery heat exchanger 100 is greatly improved, the temperature extreme value is reduced, the temperature of a power battery under extreme conditions is greatly improved, the working conditions such as quick charge is ensured, the reliability of the vehicle is ensured, and the reliability of the vehicle is ensured.

Other constructions and operation of the battery heat exchanger 100 according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A battery heat exchanger, comprising:

a heat exchange plate having a plurality of micro channels spaced apart in a width direction of the heat exchange plate, each of the micro channels penetrating the heat exchange plate in a length direction of the heat exchange plate;

the heat exchange plate comprises a first collecting pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are respectively arranged at two ends of the length direction of the heat exchange plate and extend along the width direction of the heat exchange plate, and two ends of each micro-channel on the heat exchange plate in the length direction are respectively communicated with the first collecting pipe and the second collecting pipe.

2. The battery heat exchanger according to claim 1, wherein a first opening is formed in a peripheral wall of the first header, and an end of the heat exchange plate, which is far away from the second header, is inserted into the first header through the first opening.

3. The battery heat exchanger according to claim 1, wherein a second opening is formed in a peripheral wall of the second header, and one end of the heat exchange plate, which is far away from the first header, is inserted into the second header through the second opening.

4. The battery heat exchanger according to claim 1, wherein the first header is open at both ends in the length direction, one end in the length direction of the first header is provided with a first plug, and the other end is provided with an inlet joint.

5. The battery heat exchanger of claim 4, wherein a first transfer tube is disposed between the inlet fitting and the first header.

6. The battery heat exchanger according to claim 4, wherein the second header is open at both ends in the length direction, a second plug is provided at one end in the length direction of the second header, an outlet connector is provided at the other end, and the first plug and the second plug are provided at opposite ends in the width direction of the heat exchange plate.

7. The battery heat exchanger of claim 6, wherein a second transfer tube is disposed between the outlet fitting and the second header.

8. The battery heat exchanger of claim 1, wherein the heat exchange plate is a flat plate.

9. A battery pack, comprising:

the battery cell assembly comprises a plurality of battery cells, and the battery cells are stacked in the thickness direction of the battery cells;

the battery heat exchanger according to any one of claims 1 to 8, which is provided on one side of the cell assembly in the cell width direction.

10. The battery pack of claim 9, further comprising:

and the heat conducting glue is arranged between the battery core assembly and the battery heat exchanger.

11. A thermal management system, comprising:

a refrigeration circuit;

the battery pack of claim 9 or 10, the battery heat exchanger being connected within the refrigeration circuit.

12. A vehicle comprising the thermal management system of claim 11.

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