CN213401304U - Battery temperature adjusting plate and battery pack - Google Patents
Battery temperature adjusting plate and battery pack Download PDFInfo
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- CN213401304U CN213401304U CN202022351049.5U CN202022351049U CN213401304U CN 213401304 U CN213401304 U CN 213401304U CN 202022351049 U CN202022351049 U CN 202022351049U CN 213401304 U CN213401304 U CN 213401304U
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- 239000007788 liquid Substances 0.000 claims abstract description 426
- 230000033228 biological regulation Effects 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000004321 preservation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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 field of batteries and discloses a battery temperature adjusting plate and a battery pack. The battery temperature adjusting plate comprises a liquid inlet sub-plate and a liquid outlet sub-plate, wherein the liquid inlet sub-plate is provided with a liquid inlet cavity, a first support rib is arranged inside the liquid inlet cavity and divides the liquid inlet cavity into a plurality of liquid inlet flow channels, and/or the liquid outlet sub-plate is provided with a liquid outlet cavity, a second support rib is arranged inside the liquid outlet cavity and divides the liquid outlet cavity into a plurality of liquid outlet flow channels; the liquid inlet cavity is communicated with the liquid outlet cavity through a liquid return port; the liquid inlet flow channels in the liquid inlet cavity are different in width, and/or the liquid outlet flow channels in the liquid outlet cavity are different in width. The battery temperature adjusting plate is utilized to solve the problem that the flow distribution of the heat transfer medium of the existing battery temperature adjusting plate is uniform.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery temperature adjusting plate and a battery pack.
Background
At present, rechargeable batteries are widely used in various industries, and for example, new energy vehicles are taken as examples, and a battery pack formed by the rechargeable batteries becomes a power source of the new energy vehicles to provide power supply for the new energy vehicles. When the battery pack is in a working state, a large amount of heat can be released, if the heat is not discharged in time, the temperature of the battery pack can be increased, and even the normal operation of corresponding equipment can be influenced. In the conventional battery pack, a cooling plate is generally disposed at the bottom of a battery pack composed of battery cells, and a heat transfer medium is introduced into the cooling plate to adjust the temperature of the battery pack. Although the existing cooling plate can achieve a certain cooling effect, the existing cooling plate has the problem of uneven cooling effect.
SUMMERY OF THE UTILITY MODEL
The application discloses battery temperature regulation board and battery package to solve present battery temperature regulation board temperature regulation inhomogeneous problem.
In order to achieve the purpose, the application provides the following technical scheme:
a battery temperature adjusting plate comprises a liquid inlet sub-plate and/or a liquid outlet sub-plate, wherein the liquid inlet sub-plate is provided with a liquid inlet cavity, at least two liquid inlet flow channels are arranged in the liquid inlet cavity, and/or the liquid outlet sub-plate is provided with a liquid outlet cavity, and at least two liquid outlet flow channels are arranged in the liquid outlet cavity; the liquid inlet cavity is communicated with the liquid outlet cavity through a liquid return port; the liquid inlet cavity is internally provided with at least two liquid inlet flow channels, and/or the liquid outlet cavity is internally provided with at least two liquid outlet flow channels, wherein the at least two liquid inlet flow channels are different in width, and/or the at least two liquid outlet flow channels are different in width.
The beneficial effect that this application adopted above-mentioned technical scheme to produce is as follows:
the application provides a battery temperature regulating plate, including the feed liquor daughter board with go out the liquid daughter board. The liquid inlet sub-plate is provided with a liquid inlet cavity, at least two liquid inlet flow channels are arranged inside the liquid inlet cavity, the liquid outlet sub-plate is provided with a liquid outlet cavity, at least two liquid outlet flow channels are arranged inside the liquid outlet cavity, and the liquid inlet cavity is communicated with the liquid outlet cavity through a liquid return port. Wherein, the width of at least two liquid inlet flow channels in the liquid inlet subplate is different, and the width of at least two liquid outlet flow channels in the liquid outlet subplate is different. The width between the liquid inlet flow channel and the liquid outlet flow channel is improved, so that the liquid flow in different liquid inlet flow channels and liquid outlet flow channels is improved, and the uniform distribution of heat transfer media is realized.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack case provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a temperature adjustment system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a battery temperature regulation plate according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a battery temperature regulation plate according to an embodiment of the present application.
Reference numerals: 10-a box body bottom plate; 101-mounting a beam; 11-a liquid inlet pipeline; 12-a liquid outlet pipeline; 20-battery temperature adjusting plate; 201-a first side; 202-a second side; 203-third side; 204-fourth side; 21-a liquid inlet plate; 21 a-a liquid inlet chamber; 211-a liquid inlet; 212-a liquid inlet flow channel; 213-an outflow opening; 22-liquid outlet daughter board; 22 a-a liquid outlet chamber; 221-a liquid outlet; 222-liquid outlet flow channel; 23-a divider plate; 24-a liquid return port; 251-a first support rib; 252-second support ribs.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate understanding of the battery temperature adjusting plate according to the embodiment of the present application, a brief description is first made below of an application scenario thereof. The battery pack generally includes a case and a battery pack disposed in the case, wherein the battery pack is composed of a plurality of sequentially arranged battery cells, the case includes a case bottom plate and a case side plate, and the case bottom plate and the case side plate constitute a receiving space for receiving the battery pack. In order to cool the battery pack, a cooling system is generally provided at the bottom of the battery pack, and the battery pack can be cooled by, for example, a bottom plate of a case. The structure of the box of an embodiment of the present application is shown in fig. 1, and the bottom plate 10 of the box includes at least one set of battery temperature adjusting plates 20, and a mounting beam 101 is disposed between each set of battery temperature adjusting plates 20 to fix the battery pack. Any one group of battery temperature adjusting plates 20 comprises an inlet liquid plate 21 and an outlet liquid plate 22 to form a cooling branch. Fig. 2 is a schematic structural view of a cooling system including a battery temperature adjustment plate 20 and a cooling duct, as shown in fig. 2. The cooling pipeline comprises a liquid inlet pipeline 11 and a liquid outlet pipeline 12, the liquid inlet pipeline 11 is communicated with a liquid inlet daughter board 21, and the liquid outlet pipeline 12 is communicated with a liquid outlet daughter board 22.
Fig. 3 is a schematic structural diagram of a battery temperature regulation plate 20 according to an embodiment of the present application, and referring to fig. 2 and 3 together, the battery temperature regulation plate 20 includes a liquid inlet sub-plate 21 and a liquid outlet sub-plate 22 which are arranged side by side. The liquid inlet plate 21 has a liquid inlet 211, a liquid inlet cavity 21a is formed therein, the liquid inlet 211 is communicated with the liquid inlet cavity 21a, and the liquid inlet cavity may include at least two liquid inlet flow channels 212. The liquid outlet plate 22 has a liquid outlet 221, and a liquid outlet cavity 22a is formed in the liquid outlet plate, the liquid outlet 221 is communicated with the liquid outlet cavity 22a, and the liquid outlet cavity 22a may include at least two liquid outlet channels 222, for example. The liquid inlet channel 212 is communicated with the liquid outlet channel 222 through the liquid return port 24. Referring to fig. 2, the liquid inlet 211 is connected to the liquid inlet pipe 11, and the liquid outlet 221 is connected to the liquid outlet pipe 12.
It can be understood that, in the embodiment of the present application, the liquid inlet sub-plate 21 and the liquid outlet sub-plate 22 are isolated from each other and not communicated with each other except the liquid return port 24. Thus, when a heat transfer medium, such as a cooling liquid, is introduced into the liquid inlet 211, the heat transfer medium flows through the liquid inlet flow channel 212 in the liquid inlet sub-plate 21, then flows from the liquid return port 24 to the liquid outlet flow channel 222, and then flows out from the liquid outlet 221, so as to adjust the temperature of the battery pack disposed on the surface thereof, such as cooling. Wherein the heat transfer medium is a liquid, such as water, that transfers heat.
Referring to fig. 3, in this embodiment, at least two first support ribs 251 are disposed in the liquid inlet cavity 21a, the first support ribs 251 divide the liquid inlet cavity 21a into a plurality of liquid inlet channels 212, and the number of the liquid inlet channels 212 is, for example, at least three, and may be four, five, or more than five. At least two second support ribs 252 are disposed in the liquid outlet cavity 22a, the second support ribs 252 divide the liquid inlet cavity 22a into a plurality of liquid outlet channels 222, and the number of the liquid inlet channels 212 is, for example, at least three, and may be four, five, or more than five. The widths of the first support ribs 251 in the liquid inlet cavity 21a are different to form liquid inlet channels 212 with different widths, and the widths of the second support ribs 252 in the liquid outlet cavity 22a are different to form liquid outlet channels 222 with different widths.
Because the driving force and resistance of the heat transfer medium in each liquid inlet channel 212 and liquid outlet channel 222 are different, the liquid inlet channels 212 with different widths and the liquid outlet channels 222 with different widths are obtained by arranging the first support ribs 251 with different intervals and the second support ribs 252 with different intervals, and the flow of the heat transfer medium is uniformly distributed, so that the temperature adjusting effect of the battery temperature adjusting plate is more uniform.
Referring to fig. 3, in an embodiment of the present application, in the liquid inlet cavity 21a, the width of the liquid inlet channel 211 at the liquid return port 24 is smaller than the width of the rest of the liquid inlet channels 211; and/or in the liquid outlet cavity 22a, the width of the liquid outlet channel 221 at the liquid return port 23 is smaller than the width of the rest of the liquid outlet channels 221. In the embodiment of the present application, in the liquid inlet cavity 21a, the width of the liquid inlet flow channel 211 located at the liquid return port 23 is the narrowest, and in the liquid outlet cavity, the width of the liquid outlet flow channel 222 located at the liquid return port 23 is the narrowest. The liquid inlet channel 212 at the liquid return port 23 is the liquid inlet channel closest to the liquid return port 23, and no other liquid inlet channel exists between the liquid inlet channel 212 and the liquid return port 23 along the extending direction of the first side plate. The liquid outlet channel 222 at the liquid return port 23 refers to the liquid outlet channel closest to the liquid return port 23, and no other liquid outlet channel exists between the liquid outlet channel 222 and the liquid return port 23 along the extending direction of the first side plate.
Because the resistance of the heat transfer medium in the liquid inlet flow channel 212 and the liquid outlet flow channel 222 close to the liquid return port 24 is relatively small, the width of the liquid inlet flow channel 212 at the liquid return port 24 is relatively long, the widths of the other liquid inlet flow channels 212 are relatively narrow, the width of the liquid outlet flow channel 222 at the liquid return port 24 is relatively wide, and the widths of the other liquid outlet flow channels 222 are relatively narrow, so that the mass flow rates of the heat transfer medium in each liquid inlet flow channel 212 and each liquid outlet flow channel 222 can be adjusted, and the flow rates of the heat transfer medium in each liquid inlet flow channel 212 and each liquid outlet flow channel 222 are ensured to be the same.
The first support ribs 251 and the second support ribs 252 can increase the structural strength of the liquid inlet plate 21 and the liquid outlet plate 22, in addition to forming the liquid inlet flow passage 212 and the liquid outlet flow passage 222 respectively.
In an embodiment of the present application, the widths of the liquid inlet channel 212 and the liquid outlet channel 222 are less than or equal to 60mm, so as to ensure the flatness of the battery temperature adjusting plate 20.
In an embodiment of the present application, the liquid inlet 211 and the liquid outlet 221 are disposed adjacent to the first side plate 201 of the battery temperature adjustment plate 20, and the liquid return port 24 is disposed adjacent to the second side plate 202 of the battery temperature adjustment plate; the second side plate 202 is disposed opposite to the first side plate 201. Thus, the distance difference and resistance difference between the liquid inlet channels 212 between the liquid inlet 211 and the liquid return port 24 and the distance difference and resistance difference between the liquid outlet channels 222 between the liquid return port 24 and the liquid outlet 221 of the heat transfer medium flowing from the liquid inlet 211 can be further reduced, so that the flow rates of the heat transfer medium in the liquid inlet channels 212 and the heat transfer medium in the liquid outlet channels 222 are more uniform.
It can be understood that the liquid inlet 211 in the embodiment of the present application is disposed adjacent to the first side plate 201, which means that the liquid inlet 211 is disposed closer to the first side plate 201 in the arrangement direction of the first side plate 201 and the second side plate 202, for example, by the distance h between the first side plate 201 and the second side plate 2010The distance h between the liquid inlet 211 and the first side plate 201 is used as a reference1For example, less than 0.1h0. Similarly, the liquid outlet 221 is disposed adjacent to the first side plate 201, and is oriented in the arrangement direction of the first side plate 201 and the second side plate 202,the liquid outlet 221 is disposed closer to the first side plate 201, for example, by a distance h between the first side plate 201 and the second side plate 2010The distance h between the liquid inlet 211 and the first side plate 201 is used as a reference2For example, less than 0.1h0. The liquid return port 24 is disposed adjacent to the second side plate 202, and is oriented in the arrangement direction of the first side plate 201 and the second side plate 202, and the liquid return port 24 is disposed closer to the second side plate 202, for example, by the distance h between the first side plate 201 and the second side plate 2010The distance h between the liquid return port 24 and the second side plate 202 is taken as a reference3For example, less than 0.1h0。
With continued reference to fig. 3, in an embodiment of the present application, in the extending direction of the first side plate 201, the liquid inlet 211 and the liquid return 24 are located on two sides of the central line L1 of the liquid inlet cavity 21a, and/or the liquid outlet 221 and the liquid return 24 are located on two sides of the central line L2 of the liquid outlet cavity 22 a.
In this structure, taking the liquid inlet sub-plate 21 as an example, the heat transfer medium enters the liquid inlet flow channel 212 from the liquid inlet 211, because the heat transfer medium is constrained by the liquid inlet flow channel 212 in the flowing process, and is simultaneously subjected to the friction resistance of the liquid inlet flow channel 212 and the internal shearing resistance of the heat transfer medium in the flowing process, and the liquid inlet 211 and the liquid return port 24 are located at two sides of the center line L1 of the liquid inlet cavity 21a, the resistance of the heat transfer medium in different liquid inlet flow channels 212 of the liquid inlet cavity 21a can be reduced, the resistance encountered by the heat transfer medium entering from the liquid inlet 211 in the liquid inlet flow channel 212 can be more consistent, and meanwhile, the pressure difference of the heat transfer medium in different liquid inlet flow channels 212 can be made to be consistent, so that the distribution of the heat transfer medium in different liquid. Similarly, by arranging the liquid outlet 221 and the liquid return port 24 on two sides of the center line of the liquid outlet sub-plate 22, the resistances of the heat transfer medium in different liquid outlet flow channels 222 can be more consistent, and the heat transfer medium can be more uniformly distributed in different liquid outlet flow channels 222.
The battery temperature adjusting plate 20 of the embodiment of the application comprises a partition plate 23 arranged between a liquid inlet sub-plate 21 and a liquid outlet sub-plate 22. The partition plate 23 is used for separating the liquid inlet sub-plate 21 and the liquid outlet sub-plate 22 by displacing the middle part of the battery temperature adjusting plate 20, so that a liquid inlet cavity 21a in the liquid inlet sub-plate 21 and a liquid outlet cavity 22a in the liquid outlet sub-plate 22 are not communicated with each other.
The partition plate 23 disposed between the liquid inlet plate 21 and the liquid outlet plate 22 has one end fixedly connected to the first side plate 201, and the other end having a gap with the second side plate 202 of the battery temperature adjusting plate 20, the gap forming a liquid return port 24, wherein the second side plate 202 is disposed opposite to the first side plate 201. In this embodiment, the partition plate 23 is disposed to extend from the first side plate 201 to the second side plate 202, and a gap is reserved between the end of the partition plate and the second side plate 202 to form the liquid return port 24. In this structure, the liquid return port 24 may be disposed adjacent to the second side plate 202 to further increase the uniformity of the heat transfer medium in each of the liquid inlet flow passage 212 and the liquid outlet flow passage 222.
As shown in fig. 3, in an embodiment of the present application, in the extending direction of the first side plate 201, between the third side plate and the liquid inlet 211, the width of the liquid inlet channel 212 close to the liquid inlet 211 is smaller than the width of the liquid inlet channel 212 far from the liquid inlet 211; between the fourth side plate and the liquid outlet 221, the width of the liquid outlet channel 222 near the liquid outlet 221 is smaller than the width of the liquid outlet channel 222 far from the liquid outlet 221. Because the flow rate of the heat transfer medium near the liquid inlet 211 and the liquid outlet 221 is fast, the driving force is large, and the distance between the support ribs 25 near the liquid inlet 211 and the liquid outlet 221 is smaller than the distance between the support ribs 25 far from the liquid inlet 211 or the liquid outlet 221, so that the flow in each liquid inlet flow channel 212 and each liquid outlet flow channel 222 is more uniform.
With continued reference to fig. 3, in an embodiment of the present application, between the liquid return port 24 and the liquid inlet 211, the width of the liquid inlet channel 212 near the liquid return port 24 is smaller than the width of the liquid inlet channel 212 far from the liquid return port 24 in the extending direction of the first side plate 201; between the liquid return port 24 and the liquid outlet 221, the width of the liquid outlet channel 222 near the liquid return port 24 is smaller than the width of the liquid outlet channel 222 far from the liquid return port 24. The resistance of the heat transfer medium in the liquid inlet channel 212 and the liquid outlet channel 222 close to the liquid return port 24 is smaller, so that the widths of the liquid inlet channel 212 and the liquid outlet channel 222 close to the liquid return port 24 are set to be relatively narrow, the flow rates of the heat transfer medium in each liquid inlet channel 212 and each liquid outlet channel 222 can be adjusted, and the flow rates of the heat transfer medium in each liquid inlet channel 212 and each liquid outlet channel 222 are ensured to be the same.
It should be understood that, in the embodiments of the present application, approaching or departing refers to a relative position relationship obtained by comparing two liquid inlet flow channels or two liquid outlet flow channels.
In an embodiment of the present application, the battery temperature adjusting plate is rectangular, wherein the first side plate 201 and the second side plate 202 are straight plates, and the partition plate 23 is a straight plate and is located in the perpendicular bisector of the first side plate 201 and the second side plate 202. The partition plate 23 is in a straight plate shape, so that the resistance of the heat transfer medium in the liquid inlet channel 212 and the liquid outlet channel 222 near the partition plate 23 can be reduced, and the positions of the liquid inlet 211 and the liquid outlet 221 can be conveniently arranged.
As shown in fig. 3, in an embodiment of the present application, in the liquid inlet chamber, the width of the liquid inlet flow channel 212 gradually decreases from the partition plate 23 to the third side plate 203 of the battery temperature regulation plate; in the liquid outlet cavity, the width of the liquid outlet flow channel 222 gradually decreases from the partition plate 23 to the fourth side plate 204 of the battery temperature adjusting plate.
With continued reference to fig. 3, in an embodiment of the present application, the length of the first supporting rib 251 in the liquid inlet chamber 21a near the liquid return port 24 is longer than the length of the first supporting rib 251 far from the liquid return port 24; and/or the length of the second support rib 252 in the liquid outlet cavity 22a near the liquid return port 24 is longer than the length of the second support rib 252 far from the liquid return port 24.
Because the resistance of the heat transfer medium in the liquid inlet channel 212 and the liquid outlet channel 222 close to the liquid return port 24 is relatively small, the length of the first support rib 251 close to the liquid return port 24 is relatively long, the length of the first support rib 251 far from the liquid return port 24 is relatively short, the length of the second support rib 252 close to the liquid return port 24 is relatively long, and the length of the second support rib 252 far from the liquid return port 24 is relatively short, the mass flow rate of the heat transfer medium in each liquid inlet channel 212 and the mass flow rate of the heat transfer medium in each liquid outlet channel 222 can be adjusted, and therefore the flow rate of the heat transfer medium in each liquid inlet channel 212 and the flow rate of the heat transfer medium in each liquid outlet channel 222 are ensured to be the same. The lengths of the first supporting rib 251 and the second supporting rib 252 can be adjusted by one side or two sides.
In an embodiment of the present application, in the liquid inlet cavity 21a, two ends of the first supporting rib 251 point to the first side plate 201 and the second side plate 202 respectively, a distance from one end of the first supporting rib 251 to the first side plate 201 is different, and a distance from the other end of the first supporting rib 251 to the second side plate 202 is the same. In the liquid outlet cavity 22a, two ends of the second support rib 252 respectively point to the first side plate 201 and the second side plate 202, distances from one end of the second support rib 252 to the first side plate 201 are different, and distances from the other end of the second support rib 25 to the second side plate 202 are the same. The adjustment mode belongs to the one-way adjustment of the length of the support rib 25, that is, the end portions of the first support rib 251 and the second support rib 252 at one side plate belong to a flush state, and the end portions at the other side plate are in a non-flush state, wherein the end portions of the first support rib 251 and the second support rib 252 pointing to the side of the liquid inlet 211 and the liquid outlet 221 are in a non-flush state. By the structure, when the liquid inlet sub-plate 21 and the liquid outlet sub-plate 22 are assembled, errors can be effectively prevented.
In an embodiment of the present application, in the liquid inlet chamber 21a, a distance between the first supporting rib 251 and the first side plate 201 gradually increases from the partition plate 23 to the third side plate 203 of the battery temperature adjustment plate; in the liquid outlet cavity, the distance between the second support rib 252 and the first side plate 201 gradually increases from the partition plate 23 to the fourth side plate 204 of the battery temperature adjustment plate.
In an embodiment of the present application, in the liquid inlet cavity 21a, two ends of the first supporting rib 251 point to the first side plate 201 and the second side plate 202 respectively, a distance from one end of the first supporting rib 251 to the first side plate 201 is the same, and a distance from the other end of the first supporting rib 251 to the second side plate 202 is different. In the liquid outlet cavity 22a, two ends of the second support rib 252 respectively point to the first side plate 201 and the second side plate 202, the distance from one end of the second support rib 252 to the first side plate 201 is the same, and the distance from the other end of the second support rib 25 to the second side plate 202 is different. The adjustment mode belongs to the one-way adjustment of the length of the support rib 25, that is, the end portions of the first support rib 251 and the second support rib 252 at one side plate belong to a flush state, and the end portions at the other side plate are in a non-flush state, wherein the end portions of the first support rib 251 and the second support rib 252 pointing to the side of the liquid inlet 211 and the liquid outlet 221 are in a non-flush state. By the structure, when the liquid inlet sub-plate 21 and the liquid outlet sub-plate 22 are assembled, errors can be effectively prevented.
In an embodiment of the present application, the length of the first supporting rib 251 is gradually decreased from the partition plate 23 to the third side plate 203 in the liquid inlet chamber 21 a. In the liquid outlet chamber 22a, the length of the second support rib 252 gradually decreases from the partition plate 23 to the fourth side plate 204.
In an embodiment of the application, the liquid inlet sub-plate and the liquid outlet sub-plate which form the battery temperature adjusting plate can be respectively prepared by an extrusion forming process, and the liquid inlet sub-plate and the liquid outlet sub-plate prepared by the extrusion forming process are high in strength and can bear certain pressure. In addition, the liquid inlet sub-plate and the liquid outlet sub-plate can be connected through friction stir welding. The sealing performance of the friction stir welding is good, the sealing performance of the battery temperature adjusting plate can be guaranteed, and meanwhile, the bearing capacity of the liquid inlet sub-plate and the liquid outlet sub-plate can be improved.
In another embodiment of this application, liquid inlet daughter board and play liquid daughter board can be integral type structure, and the division board can set up with liquid inlet daughter board and play liquid daughter board integrated into one piece, for example extrusion to improve the pressure-bearing capacity of liquid inlet daughter board and play liquid daughter board, and make liquid inlet daughter board and play liquid daughter board have better leakproofness.
In another embodiment of the present application, the battery temperature adjusting plate may further include only one liquid inlet plate or only one liquid outlet plate, and the following description will be given by taking only one liquid inlet plate as an example. Fig. 4 is a schematic structural view of a battery temperature regulating plate according to another embodiment of the present application. As shown in fig. 4, the battery temperature adjustment plate according to the embodiment of the present application includes a liquid inlet plate 21, and the liquid inlet plate 21 includes a liquid inlet 211 and a liquid outlet 213, where the liquid inlet 211 is disposed near the first side plate 201, and the liquid outlet 213 is disposed near the second side plate 202. At least two first support ribs 251 are provided in the liquid inlet plate 21, and the liquid inlet cavity 21a in the liquid inlet plate 211 is divided into a plurality of liquid inlet flow channels 212 by the first support ribs 251.
The heat transfer medium entering from the inlet 211 enters the inlet channel 212 and then flows out of the outlet 213. In the battery temperature regulating plate of this embodiment, the widths of at least two liquid inlet flow channels 212 are different, thereby achieving uniform distribution of the flow rate of the heat transfer medium. Specifically, in this embodiment, the width of the inlet channel 212 close to the inlet 211 is smaller than the width of the inlet channel far from the inlet 211.
It can be understood that the battery temperature regulation plate of the embodiment of the present application may further include a liquid outlet sub-plate separately, wherein the liquid outlet sub-plate may be configured as a liquid inlet sub-plate as shown in fig. 4.
In one embodiment of the present application, a surface of one side of the battery temperature adjustment plate is provided with a thermal insulation coating. When the battery module is assembled by using the battery temperature adjusting plate and the battery pack together, the surface of one side of the battery temperature adjusting plate, which is covered with the heat-insulating coating, is back to the battery pack.
In the bottom of battery temperature regulating plate, one side that also deviates from the group battery sets up the heat preservation coating, can keep warm the regulating plate that keeps warm under the high temperature refrigeration operating mode, effectively prevents heat preservation regulating plate and environment heat transfer, simultaneously, keeps warm to the battery package under the operating mode of low temperature severe cold, reduces the heat dissipation, avoids the energy of battery consumption, improves the continuation of the journey mileage of battery package.
In the embodiment of the application, utilize the heat preservation coating to replace the cotton design of traditional heat preservation, can heat preservation coating and battery temperature regulation board's surface closely laminate, long-term the use can not take place fracture scheduling problem. Meanwhile, the arrangement of the heat preservation coating has strong shape adaptability, and the special-shaped parts on the surface of the battery temperature regulation plate, such as the raised installation parts and the installation holes on the outer surfaces of the first side plate, the second side plate, the third side plate and the fourth side plate, can be tightly attached.
In a second aspect, the present application provides a battery pack including the battery temperature regulation plate of the first aspect of the present application.
Because this battery package includes the battery temperature regulation board of this application embodiment, from this application battery temperature regulation board has under the condition of better temperature regulation uniformity, the temperature at each position of this application embodiment package during operation is more unanimous.
In one embodiment of the application, the battery pack comprises a box body and a battery pack arranged in the box body, wherein the battery temperature adjusting plate of the embodiment of the first aspect of the application is arranged at the bottom of the box body.
In this application embodiment, when installation battery temperature regulation board, battery temperature regulation board's the direction of liquid inlet runner and play liquid runner is perpendicular with the length direction of group battery, and wherein, the length direction of group battery is the array orientation between a plurality of battery monomer in the group battery. Compared with the structure that the liquid inlet flow channel is parallel to the length direction of the battery pack, the structure has the advantages that the backflow flow of the heat transfer medium is short, the temperature difference is small, and the cooling effect can be more balanced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A battery temperature adjusting plate is characterized by comprising a liquid inlet sub-plate and/or a liquid outlet sub-plate;
the liquid inlet daughter board is provided with a liquid inlet cavity, at least two liquid inlet flow channels are arranged in the liquid inlet cavity, and/or the liquid outlet daughter board is provided with a liquid outlet cavity, and at least two liquid outlet flow channels are arranged in the liquid outlet cavity; the liquid inlet cavity is communicated with the liquid outlet cavity through a liquid return port;
the liquid inlet cavity is internally provided with at least two liquid inlet flow channels, and/or the liquid outlet cavity is internally provided with at least two liquid outlet flow channels, wherein the at least two liquid inlet flow channels are different in width, and/or the at least two liquid outlet flow channels are different in width.
2. The battery temperature regulating plate according to claim 1, wherein in the liquid inlet chamber, the width of the liquid inlet flow channel at the liquid return port is smaller than the width of the rest of the liquid inlet flow channels; and/or the presence of a gas in the gas,
in the liquid outlet cavity, the width of the liquid outlet flow channel at the liquid return port is smaller than the width of the rest liquid outlet flow channels.
3. The battery temperature regulating plate according to claim 1 or 2, wherein the liquid inlet sub-plate is provided with a liquid inlet communicated with the liquid inlet cavity, the liquid outlet sub-plate is provided with a liquid outlet communicated with the liquid outlet cavity, and the liquid inlet and the liquid outlet are adjacent to the first side plate of the battery temperature regulating plate;
the liquid return port is arranged close to the second side plate of the battery temperature adjusting plate; wherein the second side plate is arranged opposite to the first side plate.
4. The battery temperature regulating plate according to claim 3, wherein the battery temperature regulating plate comprises a partition plate arranged between the liquid inlet sub-plate and the liquid outlet sub-plate, one end of the partition plate is fixedly connected with a first side plate of the battery temperature regulating plate, a gap is arranged between the other end of the partition plate and a second side plate of the battery temperature regulating plate, the gap forms the liquid return port, and the second side plate is arranged opposite to the first side plate.
5. The battery temperature regulation plate of claim 4, wherein the width of the liquid inlet flow channel between a third side plate of the battery temperature regulation plate and the liquid inlet, in the extending direction of the first side plate, near the liquid inlet is narrower than the width of the liquid inlet flow channel far from the liquid inlet; and/or the presence of a gas in the gas,
along the extending direction of the first side plate, the width of the liquid outlet flow channel, which is close to the liquid outlet, between the fourth side plate of the battery temperature adjusting plate and the liquid outlet is narrower than the width of the liquid outlet flow channel, which is far away from the liquid outlet.
6. The battery temperature regulating plate according to claim 4, wherein a width of the liquid inlet flow channel between the liquid inlet and the liquid return port, which is closer to the liquid return port, is narrower than a width of the liquid inlet flow channel, which is farther from the liquid return port, in an extending direction of the first side plate; and/or the presence of a gas in the gas,
along the extending direction of the first side plate, the width of the liquid outlet flow channel between the liquid outlet and the liquid return port, which is close to the liquid return port, is narrower than the width of the liquid outlet flow channel which is far away from the liquid return port.
7. The battery temperature regulating plate according to any one of claims 4 to 6, wherein the separator is a straight plate.
8. The battery temperature regulating plate according to claim 7, wherein the width of the liquid inlet flow path is gradually reduced from the partition plate to a third side plate of the battery temperature regulating plate in the liquid inlet chamber; and/or the presence of a gas in the gas,
in the liquid outlet cavity, the width of the liquid outlet flow channel is gradually reduced from the partition plate to the fourth side plate of the battery temperature adjusting plate.
9. The battery temperature regulation plate of claim 3, wherein the liquid inlet and the liquid outlet are adjacent to a first side plate of the battery temperature regulation plate, and the liquid return port is adjacent to a second side plate of the battery temperature regulation plate; the second side plate is arranged opposite to the first side plate;
along first curb plate extending direction, the inlet with return the liquid mouth and be located the both sides of the central line in feed liquor chamber, and/or, the outlet with return the liquid mouth and be located the both sides of the central line in play liquid chamber.
10. A battery pack comprising the battery temperature adjustment plate according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022351049.5U CN213401304U (en) | 2020-10-20 | 2020-10-20 | Battery temperature adjusting plate and battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022351049.5U CN213401304U (en) | 2020-10-20 | 2020-10-20 | Battery temperature adjusting plate and battery pack |
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| CN213401304U true CN213401304U (en) | 2021-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115548504A (en) * | 2021-06-30 | 2022-12-30 | 比亚迪股份有限公司 | Battery cold plate and battery system |
| CN118281404A (en) * | 2023-12-29 | 2024-07-02 | 比亚迪股份有限公司 | Heat exchange plate and battery pack |
| WO2025081957A1 (en) * | 2023-10-19 | 2025-04-24 | 合肥国轩高科动力能源有限公司 | Liquid cooling module and lithium battery assembly |
-
2020
- 2020-10-20 CN CN202022351049.5U patent/CN213401304U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115548504A (en) * | 2021-06-30 | 2022-12-30 | 比亚迪股份有限公司 | Battery cold plate and battery system |
| WO2025081957A1 (en) * | 2023-10-19 | 2025-04-24 | 合肥国轩高科动力能源有限公司 | Liquid cooling module and lithium battery assembly |
| CN118281404A (en) * | 2023-12-29 | 2024-07-02 | 比亚迪股份有限公司 | Heat exchange plate and battery pack |
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Address after: No. 6666 Min'an Avenue, Xiamen Torch hi tech Zone (Xiang'an) Industrial Park, Xiamen City, Fujian Province, 361101 Patentee after: Zhongchuangxin aviation new energy (Xiamen) Co.,Ltd. Address before: No. 6666 Min'an Avenue, Xiamen Torch hi tech Zone (Xiang'an) Industrial Park, Xiamen City, Fujian Province, 361101 Patentee before: AVIC lithium (Xiamen) Technology Co.,Ltd. |
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