CN220984612U - Thermal management system and battery pack - Google Patents
Thermal management system and battery pack Download PDFInfo
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- CN220984612U CN220984612U CN202322167189.0U CN202322167189U CN220984612U CN 220984612 U CN220984612 U CN 220984612U CN 202322167189 U CN202322167189 U CN 202322167189U CN 220984612 U CN220984612 U CN 220984612U
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- 239000007788 liquid Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 151
- 238000005192 partition Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 23
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application relates to the technical field of battery thermal management, in particular to a thermal management system and a battery pack, wherein the thermal management system comprises: the first heat exchange plate is arranged at the bottom of the battery pack and is used for exchanging heat to the bottom of the battery pack; the second heat exchange plate is arranged at the side part of the battery pack and is used for exchanging heat to the side part of the battery pack; the first end plate is arranged at the end part perpendicular to the side part of the battery pack and is used for exchanging heat with the end part of the battery pack; the second heat exchange plate comprises a first heat exchange sub-plate and a second heat exchange sub-plate which are perpendicular to each other. Therefore, the bottom liquid cooling and the top, end and side liquid cooling are combined, so that the diversification of the liquid cooling system inside the battery pack is realized, the battery pack of the liquid cooling system is integrated, the end plate of the battery pack is eliminated, the space utilization rate is improved, and the energy density of the battery pack is improved.
Description
Technical Field
The application relates to the technical field of battery thermal management, in particular to a thermal management system and a battery pack.
Background
At present, in the heat management design scheme of the power battery, the liquid cooling system has become the most main technical scheme due to the advantages of good reliability, high heat exchange efficiency and the like. In the design scheme of the prior liquid cooling system, heat exchange can be generally carried out between the liquid cooling system and the single areas at the bottom or on the side face of the battery, the battery module is further provided with an end plate structure, the liquid cooling plate is additionally arranged on the basis of the end plate of the module, the space utilization rate is low, and the energy density in the battery pack system is reduced.
Disclosure of utility model
The application aims to provide a thermal management system and a battery pack, which solve the technical problems that in the prior art, in a power battery, a battery module is also provided with an end plate structure, and a liquid cooling plate is added on the basis of an end plate of the module, so that the space utilization rate is low, and the energy density in the battery pack system is reduced to a certain extent.
The present application provides a thermal management system comprising:
The first heat exchange plate is arranged at the bottom of the battery pack and is used for exchanging heat with the bottom of the battery pack;
The second heat exchange plate is arranged at the side part of the battery pack and is used for exchanging heat to the side part of the battery pack;
And the first end plate is arranged at the end part perpendicular to the side part of the battery pack and is used for exchanging heat with the end part of the battery pack.
In the above technical scheme, further, the second heat exchange plate includes interconnect's first heat exchange sub-plate and second heat exchange sub-plate, first heat exchange sub-plate set up in the lateral part of group battery is used for to the lateral part of group battery carries out the heat transfer, the second heat exchange sub-plate set up in group battery top and laminating at least part group battery top is used for to the top of group battery carries out the heat transfer.
In any of the above technical solutions, further, when the second heat exchange plate is disposed at one side of the battery pack, the second heat exchange sub-plate vertically extends from one side of the first heat exchange sub-plate to exchange heat with a side plate and a top of the battery pack, respectively;
When the second heat exchange plates are arranged between two adjacent battery packs, the second heat exchange sub-plates vertically extend from the first heat exchange sub-plates to two sides so as to exchange heat with the side parts and the top parts of the two battery packs respectively.
In any of the above technical solutions, further, the first end plate includes a receiving cavity, a partition is disposed in the receiving cavity to divide the receiving cavity into a water inlet cavity near the end of the battery pack and a water return cavity far away from the end of the battery pack, and the water inlet cavity and the water return cavity form a heat exchange channel extending along a first direction, where the first direction is a direction opposite to the side of the battery pack.
In any of the above technical solutions, further, at least two insertion ports are disposed on a side, close to the battery pack, of the first end plate along the first direction at intervals to insert the second heat exchange plate, the second heat exchange plate is formed with a water inlet heat exchange channel and a water return heat exchange channel extending along the second direction, the second heat exchange plate is inserted into the insertion ports and enables the water inlet heat exchange channel to be communicated with the water inlet cavity, the water return heat exchange channel is communicated with the water return cavity, and the water inlet heat exchange channel and the water return heat exchange channel are communicated at one end far away from the first end plate, and the second direction is perpendicular to the first direction.
In any of the above technical solutions, further, the plug-in port includes a water inlet communicating with the water inlet cavity and a water return port penetrating through a through hole provided in the partition plate to communicate with the water return cavity, and the water return heat exchange channel protrudes out of the water inlet heat exchange channel on a side close to the first end plate, so that when the water inlet heat exchange channel is inserted into the water inlet, the water return heat exchange channel is plugged into the water return port through the protruding portion penetrating through the through hole.
In any of the above technical solutions, further, the number of the water inlet heat exchange channels is at least one, the number of the water return heat exchange channels is at least two, and the water inlet heat exchange channels are respectively communicated with the corresponding water return heat exchange channels at one end far away from the first end plate.
In any of the foregoing solutions, further, the thermal management system further includes a second end plate, where the second end plate and the first end plate are disposed at two ends of the battery pack at an opposite interval; the second end plate is provided with a slot, and one end, far away from the first end plate, of the second heat exchange plate is inserted into the slot.
In any one of the above technical solutions, further, two side surfaces of the first end plate along the first direction are provided with a liquid inlet communicated with the water inlet cavity and a liquid outlet communicated with the water return cavity, and the liquid inlet and the liquid outlet are respectively communicated with the first heat exchange plate.
The application also provides a battery pack, which comprises a battery pack and the thermal management system according to any one of the technical schemes, wherein the first heat exchange plate is arranged at the bottom of the battery pack; the second heat exchange plate is arranged on the side part of the battery pack; the first terminal plate is disposed at an end of the battery pack. Thus, the overall advantageous technical effects of the thermal management system are not described in detail herein.
Compared with the prior art, the application has the beneficial effects that:
The heat management system provided by the application adopts a means of combining bottom liquid cooling with top, end and side liquid cooling, so that diversification of the liquid cooling system in the battery pack is realized, liquid cooling circulation is not limited to a single plane, but liquid cooling circulation in the directions of x, y and z is combined, meanwhile, the liquid cooling system and the battery pack are integrated into a whole, a battery pack end plate is omitted, the space utilization rate is improved, and the energy density in the battery pack system is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present application;
Fig. 2 is a schematic structural view of a first end plate according to an embodiment of the present application;
FIG. 3 is a schematic view of another structure of a first end plate according to an embodiment of the present application;
FIG. 4 is a cross-sectional view taken along section A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along section B-B of FIG. 3;
fig. 6 is a schematic structural diagram of a first heat exchange side plate according to an embodiment of the present application;
fig. 7 is another schematic structural view of a first heat exchange side plate according to an embodiment of the present application;
Fig. 8 is a schematic structural view of a second end plate according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an intermediate heat exchange plate according to an embodiment of the present application;
fig. 10 is another schematic structural view of an intermediate heat exchange plate according to an embodiment of the present application;
FIG. 11 is a schematic view of another structure of a first end plate according to an embodiment of the present application;
FIG. 12 is a schematic diagram of another embodiment of a thermal management system according to the present application;
Fig. 13 is a cross-sectional view of fig. 12 taken along section C-C.
Reference numerals:
1-heat exchange bottom plate, 2-first heat exchange side plate, 3-second heat exchange side plate, 4-middle heat exchange plate, 5-first heat exchange sub-plate, 6-second heat exchange sub-plate, 7-water inlet heat exchange channel, 8-backwater heat exchange channel, 81-bulge, 9-first end plate, 90-interface, 91-water inlet cavity, 911-water inlet, 92-backwater cavity, 921-backwater port, 93-liquid inlet, 94-liquid outlet, 95-partition plate, 96-bolt, 97-through hole, 10-second end plate, 101-slot, 11-battery pack.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown.
The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, 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 application will be understood in specific cases by those of ordinary skill in the art.
A thermal management system, a battery pack, and a powered device according to some embodiments of the present application are described below with reference to fig. 1 to 13.
Example 1
Referring to FIG. 1, an embodiment of the present application provides a thermal management system comprising:
The first heat exchange plate, namely the heat exchange bottom plate 1, is arranged at the bottom of the battery pack 11 and is used for exchanging heat with the bottom of the battery pack 11;
The second heat exchange plate is arranged at the side part of the battery pack 11 and is used for exchanging heat with the side part of the battery pack 11;
and a first end plate 9 provided at an end perpendicular to the side of the battery pack 11 for heat exchanging the end of the battery pack 11.
Based on the above-described structure, the heat exchange plates are arranged at the bottom, the side and the end of the battery pack 11, so that the heat exchange area is increased, the heat exchange efficiency is greatly improved, and the safety performance and the service life of the power battery are finally improved.
In this embodiment, preferably, as shown in fig. 6, the second heat exchange plate includes a first heat exchange sub-plate 5 and a second heat exchange sub-plate 6 connected to each other, the first heat exchange sub-plate 5 is disposed at a side portion of the battery pack 11 for exchanging heat to the side portion of the battery pack 11, and the second heat exchange sub-plate 6 is disposed at a top portion of the battery pack 11 opposite to the bottom portion and is attached to at least a top portion of the battery pack 11 for exchanging heat to the top portion of the battery pack 11. According to the structure, the second heat exchange plate can exchange heat to the side part and the top part of the battery at the same time, so that the heat exchange area is greatly increased, and the heat exchange efficiency is improved. The second heat exchange sub-board 6 may cover the top of the battery pack 11 completely, or may cover the top of the battery pack 11 partially, and a coverage area of the second heat exchange sub-board 6 may be set as required, so that the second heat exchange sub-board 6 may cover the top of the battery pack 11 partially to expose an explosion-proof valve at a central position of the top of the battery pack 11 for facilitating explosion-proof exhaust.
It should be noted that, the top and the bottom of the battery 11 are oppositely disposed along the z direction, the side of the battery 11 is opposite disposed along the x direction perpendicular to the top and the bottom, and the end of the battery 11 is opposite disposed along the y direction perpendicular to the side, the top and the bottom, that is, the battery 11 has multiple faces along the x, y and z directions to form the whole battery 11, and the heat exchange plates are disposed along the x, y and z directions in the present application to increase the heat exchange area. Specifically, the battery pack 11 includes a plurality of battery cells arranged along the y direction, so that the large surface of the battery cell corresponds to the end of the battery pack 11, and the end of the battery pack 11 corresponds to the first end plate 9, thereby facilitating the heat dissipation of the large surface of the battery pack 11 and further improving the heat exchange efficiency.
In this embodiment, preferably, as shown in fig. 1, 6 and 7, when the second heat exchange plate is disposed on one side of a battery pack 11, the second heat exchange plate is disposed on a side of the battery pack 11, and the second heat exchange plate at this position is the first heat exchange side plate 2 or the second heat exchange side plate 3, and the second heat exchange sub-plate 6 included in the second heat exchange sub-plate extends vertically from one side of the first heat exchange sub-plate 5 to exchange heat with the side plate and the top of the battery pack 11, that is, the first heat exchange sub-plate 5 is disposed on the side of the battery pack 11, and the second heat exchange sub-plate 6 is disposed on the top of the battery pack 11 to exchange heat with the top and the side of the battery pack 11, so that the first heat exchange side plate 2 and the second heat exchange side plate 3 are L-shaped, and thus can exchange heat with the top and the side of the battery pack 11 at the same time.
In this embodiment, preferably, as shown in fig. 1, 9 and 10, when the second heat exchange plate is disposed between two adjacent battery packs 11, the second heat exchange plate at this position is the middle heat exchange plate 4, which includes the second heat exchange sub-plates 6 extending vertically from the first heat exchange sub-plate 5 to both sides to exchange heat with the sides and the top of the two battery packs 11, respectively, so that the sides and the top of the two adjacent battery packs 11 can be simultaneously exchanged with each other, that is, both sides of the first heat exchange sub-plate 5 exchange heat with the sides of the two adjacent battery packs 11, respectively, and the two second heat exchange sub-plates 6 exchange heat with the tops of the two adjacent battery packs 11, respectively. Therefore, the middle heat exchange plate 4 is T-shaped, so that heat exchange can be performed on the side parts and the top parts of the two battery packs 11 at the same time, and two adjacent battery packs 11 share one first heat exchange sub-plate 5, so that the overall volume can be reduced, and the energy density of the battery packs 11 can be improved.
In this embodiment, preferably, as shown in fig. 3 to 5, the first end plate 9 includes a receiving chamber in which a partition 95 is provided to partition the receiving chamber into a water inlet chamber 91 near an end of the battery pack 11 and a water return chamber 92 distant from the end of the battery pack 11, that is, the first end plate 9 is provided with the water inlet chamber 91 and the water return chamber 92 at intervals in a direction distant from the end of the battery pack 11, and the water inlet chamber 91 and the water return chamber 92 form a heat exchange passage extending in a first direction, wherein the first direction is a direction opposite to a side of the battery pack 11, that is, the first direction is an x direction. Thus, the end of the water inlet cavity 91 closer to the battery pack 11 is beneficial to improving the heat exchange effect, for example, when cooling, the heat exchange medium in the water inlet cavity 91 is lower than the heat exchange medium in the water return cavity 92, so that the end of the water inlet cavity 91 closer to the battery pack 11 is more beneficial to heat exchange, and when heating, the principle is the same and will not be repeated here.
According to the above-described structure, the heat exchange medium can be conveyed into the second heat exchange plate, such as the first heat exchange side plate 2 and the second heat exchange side plate 3, through the water inlet chamber 91, and after the heat exchange is finished, the heat exchange medium in the two heat exchange side plates can return to the water return chamber 92, finally be discharged out of the first end plate 9, and after the external heat exchange, the heat exchange medium can be introduced again for circulation heat exchange.
In this embodiment, as shown in fig. 2 and 6, preferably, at least two insertion ports 90 are provided at intervals along a first direction on one side of the first end plate 9 near the battery pack 11 to insert a second heat exchange plate, the second heat exchange plate is formed with a water inlet heat exchange channel 7 and a water return heat exchange channel 8 extending along a second direction (the structures of the second heat exchange side plate 3 and the first heat exchange side plate 2 are identical and symmetrically arranged, thus referring to the structure of the second heat exchange side plate 3, in particular, the structure of the first heat exchange side plate 2 in fig. 6), the second heat exchange plate is inserted into the insertion ports 90 and enables the water inlet heat exchange channel 7 to be communicated with the water inlet cavity 91, the water return heat exchange channel 8 to be communicated with the water return cavity 92, and the water inlet heat exchange channel 7 and the water return heat exchange channel 8 are communicated at one end far from the first end plate 9, the second direction is perpendicular to the first direction, and the second direction is y direction.
Further, it is preferable that the water inlet heat exchange channel 7 and the water return heat exchange channel 8 are combined to form a U-shaped flow channel. It can be seen that the water inlet heat exchange channel 7 and the water return heat exchange channel 8 extending in the second direction extend along the side of the battery pack 11 and are parallel to each other, thereby contributing to an improvement in the heat exchange effect of the side of the battery pack 11. One ends of the water inlet heat exchange channel 7 and the water return heat exchange channel 8 are respectively communicated with the first end plate 9 to respectively realize water inlet and water return, and the other ends of the water inlet heat exchange channel 7 and the water return heat exchange channel 8 are mutually communicated, so that circulation conduction of heat exchange media is realized, a flow channel is simplified, and control of the heat exchange media is facilitated.
According to the above-described structure, the circulation sequence of the heat exchange liquid is as follows: the water inlet cavity 91, the water inlet heat exchange channel 7, the water return heat exchange channel 8 and the water return cavity 92 are finally discharged out of the first end plate 9, and after external heat exchange, the water can be introduced again for circulating heat exchange.
Further, preferably, the water inlet chamber 91 and the water return chamber 92 are spaced apart from each other along the second direction as described above, and may be separated from each other by a partition 95.
In this embodiment, preferably, as shown in fig. 4 to 6, 12, 13, wherein the plug-in port 90 includes a water inlet 911 communicating with the water inlet chamber 91 and a water return port 921 communicating with the water return chamber 92 through a through hole 97 provided through the partition plate 95, the water return heat exchange passage 8 is provided with a protrusion 81 protruding from the water inlet heat exchange passage 7 on a side close to the first end plate 9 so as to plug-in with the water return port 921 through the through hole 97 of the protrusion 81 when the water inlet heat exchange passage 7 is inserted into the water inlet 911. Specifically, the water inlet 911 and the water return port 921 are disposed in the insertion port 90 side by side, wherein the water inlet 911 is communicated with the water inlet cavity 91, and the water return port 921 is isolated from the water inlet 911 by the protrusion 81 and extends from the opening to the water return cavity 92 in a direction away from the second heat exchange plate. The water inlet heat exchange channel 7 is inserted into the water inlet 911, the water return heat exchange channel 8 is inserted into the water return port 921, the water inlet 911 and the water return port 921 which are separated in a staggered manner are used for realizing the flow distribution of the water inlet heat exchange channel 7 and the water return heat exchange channel 8, the water inlet heat exchange channel 7 and the water return heat exchange channel 8 can flow through the mutual insertion of the first end plate 9 and the second heat exchange plate directly, a pipe fitting is not needed, the installation is convenient, meanwhile, the first end plate 9 is directly integrated at the end part of the battery pack 11, the heat exchange is directly carried out with the end plate of the battery pack 11, the end plate of the battery pack 11 can be omitted, the volume of the battery pack 11 is reduced, and the energy density is improved.
It can be seen that the end of the second heat exchange plate, which is close to the first end plate 9, is not flush, and the structure formed with the backwater heat exchange channel 8 is longer than the structure formed with the water inlet heat exchange channel 7, so that the structure can adapt to the water inlet cavity 91 and the backwater cavity 92 at different positions in the second direction and are communicated, and the diversion of the water inlet heat exchange channel 7 and the backwater heat exchange channel 8 is realized. Through the mode of pegging graft, the installation of second heat exchange plate and first tip still is convenient for, need not to connect the pipe fitting, improves production efficiency.
Further, it is preferable that for the first heat exchange side plate 2 and the second heat exchange side plate 3, one end thereof near the first end plate 9 is in a state of two long and one short, and one side near the second end plate 10 may be flush. It can be seen that, for the first heat exchange side plate 2 and the second heat exchange side plate 3, the heat exchange medium flows into the water inlet heat exchange channel 7 from the water inlet 911, flows to the two adjacent water return heat exchange channels 8 from the end far away from the first end plate 9, flows out from the water return ports 921 connected with the two water return heat exchange channels 8, and realizes conduction of the heat exchange medium in the first heat exchange side plate 2 and the second heat exchange side plate 3, thereby realizing heat exchange on the side part and the top of the battery pack 11.
In this embodiment, preferably, as shown in fig. 6, for the first heat exchange side plate 2, one water inlet heat exchange channel 7 is provided, and the water inlet heat exchange channel 7 is provided between two water return heat exchange channels 8 in the vertical direction (z direction), and the water inlet heat exchange channels 7 communicate with the two water return heat exchange channels 8 at the ends away from the first end plate 9, respectively.
According to the above-described structure, the space of the first heat exchange side plate 2 is fully utilized, and two backwater heat exchange channels 8 are provided, so that the side part and the top of the battery pack 11 can be cooled simultaneously, and therefore, the heat exchange area is increased, the heat exchange efficiency is greatly improved, and the structure and the functional effect of the second heat exchange side plate 3 are as the same as those of the first heat exchange side plate 2, and are not repeated here.
Further, the second heat exchanger plate comprises an intermediate heat exchanger plate 4, for which intermediate heat exchanger plate 4 one end close to the first end plate 9 is in a two-position long and two-position short state, while the side close to the second end plate 10 may be flush. For the middle heat exchange plate 4, two groups of circulation structures are arranged, each group of circulation structure comprises a water inlet heat exchange channel 7 and a water return heat exchange channel 8, and the water inlet heat exchange channels 7 are respectively communicated with the corresponding water return heat exchange channels 8 at one ends far away from the first end plate 9. As shown in fig. 9, in the z direction, the water inlet heat exchange channel 7 and the water return heat exchange channel 8 are arranged in parallel and are communicated at one end far away from the first end plate 9, in the x direction, the water inlet heat exchange channel 7 and the water return heat exchange channel 8 which are arranged in parallel are communicated at one end far away from the first end plate 9, the flow of heat exchange medium is conveniently improved through two groups of flow structures, the flow of the heat exchange medium in each flow channel is prevented from being influenced due to excessively complex flow channels or excessively large branches, and the uneven heat exchange is avoided.
It should be noted that, no matter the first heat exchange side plate 2 and the second heat exchange side plate 3, or the intermediate heat exchange plate 4, the number of the circulation structures is not limited, and a group of circulation structures, two groups of circulation structures, or three groups of circulation structures may be provided, that is, the number of the water inlet heat exchange channels 7 and the water return heat exchange channels 8 may be provided as required, so long as the circulation of the heat exchange medium can be ensured.
In this embodiment, preferably, as shown in fig. 1 and 8, the thermal management system further includes a second end plate 10, the second end plate 10 being disposed at opposite ends of the battery pack 11 at intervals in the y-direction from the first end plate 9; the second end plate 10 is formed with a slot 101, and an end of the second heat exchanger plate, which is far away from the first end plate 9, is inserted into the slot 101.
According to the above-described structure, the second end plate 10 plays a role in supporting and fixing the second heat exchange plate, and the second end plate 10 and the second heat exchange plate are assembled together in an inserting manner, so that the installation and the disassembly are convenient, especially the later operation and maintenance are convenient, and the heat exchange channels can be selectively arranged in the second end plate 10 or not according to actual needs.
In this embodiment, as shown in fig. 1, two battery packs 11 are provided, a first end plate 9 and a second end plate 10 are provided at the ends of the two battery packs 11, three second heat exchange plates are provided at the side portions of the two battery packs 11, and one second heat exchange plate is shared between adjacent side portions. Of course, the number of the battery packs 11 and the number of the second heat exchange plates may be changed according to actual needs, as long as they can be disposed around the side, end, bottom, and top of each battery pack 11.
In this embodiment, preferably, as shown in fig. 1 and fig. 2, two sides of the first end plate 9 along the first direction are provided with a liquid inlet 93 respectively communicated with the water inlet cavity 91 and a liquid outlet 94 respectively communicated with the water return cavity 92, the liquid inlet 93 and the liquid outlet 94 are respectively communicated with the first heat exchange plate, namely, the heat exchange bottom plate 1, and preferably, the liquid inlet 93 and the liquid outlet 94 are respectively communicated with the first heat exchange plate, namely, the heat exchange bottom plate 1 through pipelines, so that overall control of the thermal management system is realized, and complexity of the lifting system is avoided by the first heat exchange plate and the second heat exchange plate respectively.
According to the above-described structure, the first heat exchange plate and the second heat exchange plate are mutually communicated through the first end plate 9, and each second heat exchange plate (including the first heat exchange side plate 2, the second heat exchange side plate 3 and the intermediate heat exchange plate 4) is parallel-split through the first end plate 9, so that the water inlet cavity 91 and the water return cavity 92 are shared, the pipeline layout is more reasonable, and the space and the pipeline investment are saved.
Backwater in this embodiment, preferably, as shown in fig. 1, in the process of assembling the first heat exchange side plate 2, the second heat exchange side plate 3 and the intermediate heat exchange plate 4 with the first end plate 9 and the second end plate 10, the firmness and stability of the assembly can be further increased by welding, and the first end plate 9 and the second end plate 10 can be detachably connected with the first heat exchange plate, that is, the heat exchange bottom plate 1 through fastening members.
In this embodiment, as shown in fig. 6 and 9, the aforementioned heat exchange bottom plate 1, the first heat exchange side plate 2, the second heat exchange side plate 3, and the intermediate heat exchange plate 4 may be either profile plates or press plates, and flow passages may be formed therein.
In this embodiment, preferably, for the first heat exchange side plate 2, the second heat exchange side plate 3 and the intermediate heat exchange plate 4, one end of the heat exchange side plate near the second end plate 10 may be plugged by a plugging strip (not shown in the figure), or the flow channel of the heat exchange plate does not penetrate through one end near the second end plate 10, and preferably, the plugging strip is made of aluminum or a sealing ring.
In summary, the assembly steps of the thermal management system provided by the application are as follows:
Integrating the first heat exchange plate, namely the heat exchange bottom plate 1, with the battery box body frame by adopting bolts, sealing rings or friction stir welding;
Because the first end plate 9, the first heat exchange side plate 2, the second heat exchange side plate 3 and the middle heat exchange side plate are integrated into a whole in a brazing or flame welding mode, the whole is fixed to the first heat exchange plate, namely the heat exchange bottom plate 1, through threaded holes in the first end plate 9 by bolts 96;
The batteries are pressed into a space formed by the first heat exchange side plate 2, the second heat exchange side plate 3 and the middle heat exchange plate 4 sequentially through the tooling according to each group of sequences;
After the batteries are completely placed, inserting the end plugs of the first heat exchange side plate 2, the second heat exchange side plate 3 and the middle heat exchange plate 4 into the slots 101 in the second end plate 10, and fixing the second end plate 10 on the heat exchange bottom plate 1 through bolts to clamp the battery pack 11;
finally, the inlet and outlet pipelines are connected.
It can be seen that, through two cavities isolated from each other inside the first end plate 9, the two cavities are respectively communicated with the water inlets 911 and the water return ports 921 of the second heat exchange plates (which may include the first heat exchange side plate 2, the second heat exchange side plate 3 and the middle heat exchange plate 4), so as to realize the parallel connection of three branches, thereby improving the overall integration, reducing the volume occupation compared with the use of the conduit communication, and simultaneously realizing the cooling of the bottom surface, at least one side surface, the top surface and the end surface, increasing the heat exchange area of the battery pack 11, and improving the heat exchange efficiency.
In addition, the T-shaped middle heat exchange plate 4 is arranged in the middle of the two rows of battery packs 11, so that heat exchange can be performed on the side surfaces of the two rows of battery packs 11 at the same time, and the occupied volume is reduced.
In addition, the T-shaped middle heat exchange plate 4, the L-shaped first heat exchange side plate 2 and the L-shaped second heat exchange side plate 3 are internally provided with a multi-cavity runner, so that the effect of heat exchange on the side face and the top face of the battery pack 11 can be achieved, the front ends of the plates, which are close to the first end plate 9, are not level, and the tail ends of the plates are level, and the assembly requirements of the plates with the first end plate 9 and the second end plate 10 are met;
Furthermore, the second heat exchanger plate is connected to the first end plate 9 and the second end plate 10 by welding to ensure tightness of the second heat exchanger plate to the first end plate 9 and the second end plate 10.
In combination with the above, the thermal management system provided by the application adopts a means of combining bottom liquid cooling with top, end and side liquid cooling, so that diversification of the liquid cooling system in the battery pack is realized, the liquid cooling circulation is not limited to a single plane, but the liquid cooling circulation in the directions of x, y and z is combined, meanwhile, the liquid cooling system and the battery are integrated into a whole, a battery end plate is omitted, the space utilization rate is improved, and the energy density in the battery pack system is further improved.
Example two
The second embodiment of the present application further provides a battery pack, including a battery pack 11 and the thermal management system described in the first embodiment; wherein the first heat exchange plate is arranged at the bottom of the battery pack 11; the second heat exchange plate is arranged on the side part of the battery pack 11; the first terminal plate 9 is provided at an end of the battery pack 11. Therefore, the heat management system has all the beneficial technical effects, and the same technical features and beneficial effects are not repeated.
Example III
The third embodiment of the present application also provides an electric device, which includes the battery pack described in the second embodiment, so that the battery pack has all the beneficial technical effects, and the same technical features and beneficial effects are not repeated. The powered device may include land, air, water vehicles, energy storage devices, or the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (8)
1. A thermal management system, comprising:
The first heat exchange plate is arranged at the bottom of the battery pack and is used for exchanging heat with the bottom of the battery pack;
The second heat exchange plate is arranged at the side part of the battery pack and is used for exchanging heat to the side part of the battery pack;
The first end plate is arranged at the end part perpendicular to the side part of the battery pack and is used for exchanging heat with the end part of the battery pack;
the second heat exchange plate comprises a first heat exchange sub-plate and a second heat exchange sub-plate which are connected with each other, the first heat exchange sub-plate is arranged at the side part of the battery pack and is used for exchanging heat with the side part of the battery pack, and the second heat exchange sub-plate is arranged at the top of the battery pack and is attached to at least part of the top of the battery pack and is used for exchanging heat with the top of the battery pack;
When the second heat exchange plate is arranged on one side of the battery pack, the second heat exchange sub-plate vertically extends from one side of the first heat exchange sub-plate so as to exchange heat with the side plate and the top of the battery pack respectively;
When the second heat exchange plates are arranged between two adjacent battery packs, the second heat exchange sub-plates vertically extend from the first heat exchange sub-plates to two sides so as to exchange heat with the side parts and the top parts of the two battery packs respectively.
2. The thermal management system of claim 1, wherein the first end plate comprises a receiving cavity having a partition disposed therein to divide the receiving cavity into a water inlet cavity proximate the end of the battery pack and a water return cavity distal the end of the battery pack, the water inlet cavity and the water return cavity forming heat exchange channels extending in a first direction, wherein the first direction is a direction opposite the sides of the battery pack.
3. The thermal management system of claim 2, wherein the side of the first end plate adjacent to the battery pack is provided with at least two insertion openings at intervals along the first direction for inserting the second heat exchange plate, the second heat exchange plate is formed with a water inlet heat exchange channel and a water return heat exchange channel extending along a second direction, the second heat exchange plate is inserted into the insertion openings and enables the water inlet heat exchange channel to be communicated with the water inlet cavity, the water return heat exchange channel is communicated with the water return cavity, and the water inlet heat exchange channel and the water return heat exchange channel are communicated at one end far away from the first end plate, and the second direction is perpendicular to the first direction.
4. A thermal management system according to claim 3, wherein the plug interface comprises a water inlet communicating with the water inlet chamber and a water return port communicating with the water return chamber through a through hole provided through the partition plate, the water return heat exchange passage being provided with a projection projecting from the water inlet heat exchange passage on a side close to the first end plate so as to plug with the water return port through the through hole through the projection when the water inlet heat exchange passage is inserted into the water inlet.
5. A thermal management system according to claim 3, wherein the number of said water inlet heat exchange channels is at least one, the number of said water return heat exchange channels is at least two, and said water inlet heat exchange channels are each in communication with a corresponding one of said water return heat exchange channels at an end remote from said first end plate.
6. The thermal management system of claim 1, further comprising a second end plate disposed at opposite ends of the battery pack in spaced relation to the first end plate; the second end plate is provided with a slot, and one end, far away from the first end plate, of the second heat exchange plate is inserted into the slot.
7. The thermal management system of claim 2, wherein two side surfaces of the first end plate along the first direction are provided with a liquid inlet communicated with the water inlet cavity and a liquid outlet communicated with the water return cavity, and the liquid inlet and the liquid outlet are respectively communicated with the first heat exchange plate.
8. A battery pack comprising a battery pack and the thermal management system of any one of claims 1 to 7; the first heat exchange plate is arranged at the bottom of the battery pack; the second heat exchange plate is arranged on the side part of the battery pack; the first terminal plate is disposed at an end of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322167189.0U CN220984612U (en) | 2023-08-11 | 2023-08-11 | Thermal management system and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322167189.0U CN220984612U (en) | 2023-08-11 | 2023-08-11 | Thermal management system and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN220984612U true CN220984612U (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322167189.0U Active CN220984612U (en) | 2023-08-11 | 2023-08-11 | Thermal management system and battery pack |
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| Country | Link |
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| CN (1) | CN220984612U (en) |
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2023
- 2023-08-11 CN CN202322167189.0U patent/CN220984612U/en active Active
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Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |
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