Cooling plate, cooling plate assembly, battery pack and vehicle

Abstract

The utility model discloses a cooling plate, a cooling plate assembly, a battery pack and a vehicle, relates to the technical field of batteries, and aims to solve the problem of non-uniform heat dissipation of the batteries. The cooling plate comprises a first cooling channel and a second cooling channel which are independently arranged, the first cooling channel can comprise a first channel and a second channel, the second cooling channel is arranged between the first channel and the second channel, and the first channel and the second channel can each comprise a first flow section and a second flow section which are communicated. The second flow section is located on the outflow side of the first flow section, and the second flow section is disposed between the first flow section and the second cooling channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a cooling plate, a cooling plate assembly, a battery pack and a vehicle. BACKGROUND

[0002] With the rapid development of electric vehicle technology, the performance and stability of the battery as a core component of the vehicle are directly related to the endurance and safety performance of the vehicle. The heat dissipation capacity of the battery not only affects the charging and discharging efficiency of the battery, but also may have safety hazards.

[0003] In the prior art, the cooling plate is attached to the heat generating device to exchange heat between the heat generating device and the cooling liquid in the cooling plate, thereby achieving battery heat dissipation.

[0004] However, due to uneven heat generation in the battery pack, the cooling plate directly dissipates heat from the heat generating device, which may increase the temperature difference of the battery pack and affect the performance of the battery. UTILITY MODEL CONTENTS

[0005] The purpose of the present application is to provide a cooling plate, a cooling plate assembly, a battery pack and a vehicle, which aims to solve the problem of uneven battery heat dissipation.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] In a first aspect, the present application provides a cooling plate, which can include a first cooling channel and a second cooling channel arranged independently of each other, the first cooling channel can include a first channel and a second channel, and the second cooling channel is arranged between the first channel and the second channel, wherein the first channel and the second channel can each include a first flow section and a second flow section connected thereto, the second flow section is located on the outflow side of the first flow section, and the second flow section is arranged between the first flow section and the second cooling channel.

[0008] Since the first cooling channel and the second cooling channel are arranged independently of each other, the cooling liquid will not enter the second cooling channel, and the area where the first cooling channel is located and the area where the second cooling channel is located can be cooled and dissipated respectively, so that the temperature of the two areas can be partitioned for heat dissipation, the temperature difference inside the battery can be reduced, and the performance of the battery can be improved.

[0009] In addition, since the first channel and the second channel include a first flow section and a second flow section, and the second flow section is arranged between the first flow section and the second cooling channel, when the cooling liquid is introduced into the first cooling channel, the cooling liquid can first flow through the first flow section on the outside of the second flow section. Since the outside of the cooling plate is close to the battery pole, the heat generation is greater and the temperature is higher, and the cooling liquid first passes through the first flow section, the cooling efficiency is higher.

[0010] In some embodiments, at least part of the first flow section can be arranged in parallel with at least part of the second flow section.

[0011] Since the second flow section is arranged at the outflow side of the first flow section, at least part of the first flow section is arranged in parallel with at least part of the second flow section, so that the second flow section and the first flow section can be arranged more uniformly and closely, so that the heat dissipation effect of the cooling plate can be more uniform.

[0012] In some embodiments, a turbulence structure is arranged in the first channel. The turbulence structure can increase the contact area of the cooling liquid with the cooling plate body, thereby enhancing the heat exchange capacity of the cooling plate and improving the heat exchange efficiency.

[0013] In some embodiments, the turbulence structure includes a plurality of partitions arranged at intervals along the extension direction of the first flow section. Since the plurality of partitions are arranged at intervals along the extension direction of the first flow section, the partitions can guide the cooling liquid flowing through the first flow section, facilitating the smooth flow of the cooling liquid in the first channel, thereby achieving good heat dissipation for the battery.

[0014] In some embodiments, a plurality of turbulence structures are arranged in the first channel, and the plurality of turbulence structures are arranged at intervals along a first direction of the first channel, the first direction being perpendicular to the extension direction of the first flow section.

[0015] In this way, the contact area of the cooling liquid with the cooling plate can be further increased, and the heat dissipation efficiency of the cooling plate can be improved. At the same time, since the turbulence structure is arranged at intervals along the extension direction of the first flow section perpendicular to the first channel, the flow rate of the cooling liquid in the first channel can be slowed down, and the turbulence intensity of the cooling liquid in the channel can be improved, thereby improving the heat exchange efficiency for the battery.

[0016] In some embodiments, the second channel and the second cooling channel are both provided with turbulence structures. In this way, the heat exchange efficiency of the second channel and the second cooling channel can be improved, thereby improving the heat exchange efficiency of the entire cooling plate.

[0017] In some embodiments, the cooling plate can further include a first inlet and a first outlet, the first inlet being communicated with the first flow section, and the first outlet being communicated with the second flow section.

[0018] In this way, the cooling liquid can enter the first channel through the first inlet, and then flow through the first flow section and the second flow section in sequence, and flow out through the first outlet, thereby performing heat exchange on the battery in the region where the first channel is located.

[0019] In some embodiments, the first channel and the second channel are in communication. In this way, when the cooling liquid enters from the first inlet, the cooling liquid can flow through the first channel and the second channel, and the cooling liquid in the first channel and the second channel can exchange heat with the positive pole region and the negative pole region, respectively, thereby reducing the temperature difference between the pole region and the middle region of the battery.

[0020] In some embodiments, the second cooling channel can include a third flow section and a fourth flow section in communication, and the fourth flow section is located on the outflow side of the third flow section. The cooling plate further includes a second inlet in communication with the third flow section, and a second outlet in communication with the fourth flow section.

[0021] In this way, the cooling liquid can enter the second cooling channel through the second inlet, and then flow through the third flow section and the fourth flow section in sequence, and then flow out through the second outlet, thereby exchanging heat with the battery cell in the region where the second cooling channel is located, i.e., exchanging heat with the middle region of the battery cell.

[0022] In a second aspect, the present application also provides a cooling plate assembly, which can include the cooling plate described above.

[0023] In some embodiments, the cooling plate assembly can further include an adjusting assembly having an inlet and an outlet, and the outlet of the adjusting assembly is in communication with the first cooling channel and the second cooling channel. The adjusting assembly is adapted to communicate the inlet with the first cooling channel, and / or the adjusting assembly is adapted to communicate the inlet with the second cooling channel.

[0024] In this way, the adjusting assembly can be used to adjust the entry of the cooling liquid into the first cooling channel or the second cooling channel, thereby adjusting the heat exchange state of the region where the first cooling channel is located and the region where the second cooling channel is located, thereby achieving partitioned heat exchange of the battery cell.

[0025] In some embodiments, the outlet can include a first outlet in communication with the first cooling channel, and a second outlet in communication with the second cooling channel.

[0026] In this way, the first outlet can be in communication with the first outlet, and the second outlet can be in communication with the second outlet, thereby allowing the cooling liquid flowing through the first cooling channel and the second cooling channel to be discharged.

[0027] In some embodiments, the adjusting assembly can include a solenoid valve. In this way, by controlling the solenoid valve, the entry of the cooling liquid into the first cooling channel or the second cooling channel can be controlled, thereby achieving partitioned heat exchange of the battery cell.

[0028] In some embodiments, the cooling plate assembly can further include a connecting piece connected between the adjusting assembly and the cooling plate. The connecting piece can realize the communication between the adjusting assembly and the first cooling channel or the second cooling channel.

[0029] In some embodiments, the connecting member can include a connecting plate, and a communication passage is formed on the connecting plate, the communication passage being communicated between the adjusting assembly and the first cooling passage, and the communication passage being communicated between the adjusting assembly and the second cooling passage. In this way, the communication passage between the adjusting assembly and the cooling plate can be integrated through the connecting plate, the connection is simple and convenient, and the occupied space is small.

[0030] In a third aspect, the application also provides a battery pack, which can include the above cooling plate assembly.

[0031] In some embodiments, the battery plate can also include a battery cell, and at least part of the cooling plate assembly is attached to the battery cell.

[0032] The battery cell is provided with a pole on both sides, and when the battery is working, the area close to the pole is a high-heat area, and the area far from the pole in the middle of the battery cell is a low-heat area. The cooling plate is attached to the battery cell, wherein the first cooling passage corresponds to the high-heat area, and the second cooling passage corresponds to the low-heat area. In this way, by controlling whether the cooling liquid is introduced into the first cooling passage and the second cooling passage, the zoned cooling of the battery cell can be achieved.

[0033] In some embodiments, the battery pack can also include a temperature detection device, which is arranged on the battery cell and is adapted to detect the temperature of the battery cell.

[0034] In this way, when the temperature detection device detects that the temperature of the battery cell reaches the temperature that needs to be cooled, the cooling liquid is introduced into the cooling plate to achieve heat exchange of the battery cell, thereby reducing the waste of cooling capacity.

[0035] In some embodiments, the temperature detection device can include a first temperature detection device and a second temperature detection device, the projection of the first temperature detection device on the battery cell is located within the projection of the first cooling passage on the battery cell, and the projection of the second temperature detection device on the battery cell is located within the projection of the second cooling passage on the battery cell.

[0036] In this way, the first temperature detection device can detect the temperature of the area close to the pole of the battery cell, and the second temperature detection device can detect the temperature of the middle area of the battery cell. When the temperature value detected by the first temperature detection device reaches the temperature that needs to be cooled, and the temperature value detected by the second temperature detection device does not reach the temperature that needs to be cooled, the electromagnetic valve is closed, and only the area close to the pole of the battery cell is subjected to heat exchange; when the temperature value detected by the first temperature detection device and the temperature value detected by the second temperature detection device both reach the temperature that needs to be cooled, the electromagnetic valve is opened, and the entire battery cell is cooled and exchanged.

[0037] In a fourth aspect, the present application also provides a vehicle, which can include the cooling plate, the cooling plate assembly or the battery pack described above. It should be noted that the technical effects brought by the implementation manners of the second aspect, the third aspect and the fourth aspect can be referred to the technical effects brought by the corresponding implementation manners in the first aspect, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0039] Figure 1 A structural schematic diagram of a cooling plate provided by an embodiment of the present application is shown in the figure.

[0040] Figure 2 A structural schematic diagram of a cooling plate provided by an embodiment of the present application is shown in the figure. Figure 1 A partial enlarged view of the cooling plate shown in the figure at A.

[0041] Figure 3 A structural schematic diagram of a cooling plate assembly provided by an embodiment of the present application is shown in the figure.

[0042] Figure 4 A structural schematic diagram of an adjusting assembly and a connecting piece provided by an embodiment of the present application is shown in the figure.

[0043] Figure 5 An internal structural schematic diagram of an adjusting assembly provided by an embodiment of the present application is shown in the figure.

[0044] Figure 6 A flow direction diagram of cooling liquid when the adjusting assembly shown in the figure is closed by an electromagnetic valve. Figure 5 A flow direction diagram of cooling liquid when the adjusting assembly shown in the figure is opened by an electromagnetic valve.

[0045] Figure 7 A flow direction diagram of cooling liquid when the adjusting assembly shown in the figure is opened by an electromagnetic valve. Figure 5 Reference signs: 100, cooling plate; 1000, cooling plate assembly.

[0046] 10, first cooling channel; 11, first channel; 12, second channel; 111, first flow section; 112, second flow section; 101, first inlet; 102, first outlet; 13, turbulence structure; 131, partition plate.

[0047] 20, second cooling channel; 211, third flow section; 212, fourth flow section; 221, second inlet; 222, second outlet.

[0048]

[0049] ​200, regulating assembly; 201, total inlet of cooling liquid; 202, total outlet of cooling liquid; 203, electromagnetic valve; 204, first inlet; 205, second inlet; 206, first outlet; 207, second outlet; 21, inlet channel; 22, outlet channel;

[0050] 300, connecting piece; 300A, connecting plate; 301, connecting flat plate; 302, connecting runner plate; 310, communication channel; 311, first communication channel; 312, second communication channel; 313, third communication channel; 314, fourth communication channel. DETAILED DESCRIPTION

[0051] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0052] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or relative position relationship shown in the drawings, and are only for the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above directional description can be flexibly arranged in the actual application process under the condition of meeting the relative position relationship shown in the drawings.

[0053] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0054] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the embodiments of the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, article or apparatus that comprises a list of elements not only includes those elements, but also includes other elements that are not expressly listed, or further includes elements inherent in such process, article or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, article or apparatus comprising the element.

[0056] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example or illustration.

[0057] With the rapid development of electric vehicle technology, the performance and stability of the battery as its core component are directly related to the endurance and safety performance of the whole vehicle. During the operation of the vehicle, the battery will generate a large amount of heat, and if it cannot be cooled in time and effectively, not only the charging and discharging efficiency of the battery will be affected, the service life of the battery will be shortened, but also safety hazards may be caused.

[0058] In the prior art, the cold plate is attached to the heat generating device to exchange heat between the heat generating device and the cooling liquid in the cold plate, thereby achieving battery cooling.

[0059] Due to the uneven heat generation of the battery during operation, the prior art generally performs partition cooling for different modules, but the heat generation of the battery cells in the same module is also uneven. When the battery pole side reaches the cooling start temperature, but the battery middle temperature is still low, the battery pack will start cooling. In this way, the battery pole and the middle part will be cooled at the same time, which will increase the battery temperature difference and affect the battery performance.

[0060] In view of this, the cooling plate provided by the embodiments of the present application can realize separate control of the flow of the cooling liquid in the battery pole side area and the battery middle area by setting the first cooling channel and the second cooling channel which are independent of each other, so as to control the flow of the cooling liquid in the first cooling channel and the flow of the cooling liquid in the second cooling channel according to the different temperatures of each area of the battery under different working conditions, thereby reducing the internal temperature difference of the battery and achieving good heat dissipation of the battery.

[0061] The embodiments provided by the present application will be specifically introduced in combination with the drawings of the specification.

[0062] Please refer to Figure 1 , Figure 1A structural schematic diagram of a cooling plate 100 provided by an embodiment of the present application is shown in the figure. When the battery cell is working, the current distribution inside the battery cell is not uniform. Since the current flows into or out of the battery through the pole, the current is more concentrated near the pole area, the current density is larger, and the heat generation of this area is higher. Compared with the pole area, the current density of the middle area of the battery cell is smaller, and the heat generation is less.

[0063] The cooling plate 100 provided by the embodiment of the present application can include a first cooling channel 10 and a second cooling channel 20 which are independently arranged. The first cooling channel 10 can include a first channel 11 and a second channel 12, and the second cooling channel 20 is arranged between the first channel 11 and the second channel 12.

[0064] Since the second cooling channel 20 of the cooling plate 100 is arranged between the first channel 11 and the second channel 12, when the cooling plate 100 is installed with the battery cell, the first cooling channel 10 can be arranged in the area close to the pole, and the second cooling channel 20 is arranged in the middle area of the battery cell.

[0065] Therefore, when the temperature of the area close to the pole of the battery cell reaches the cooling temperature, the cooling liquid can be introduced into the first cooling channel 10, so that the area close to the pole can be cooled. Since the first cooling channel 10 and the second cooling channel 20 are independently arranged, the cooling liquid will not enter the second cooling channel 20, and the temperature of the middle area of the battery cell will not be too low, so that the internal temperature difference of the battery can be reduced, and the performance of the battery can be improved.

[0066] When the temperature of the area close to the pole and the middle area of the battery cell reaches the cooling temperature, the cooling liquid can be introduced into the first cooling channel 10 and the second cooling channel 20 at the same time, so that the area close to the pole and the middle area can be cooled and radiated at the same time.

[0067] The first channel 11 and the second channel 12 of the cooling plate 100 of the embodiment of the present application can each include a first flow section 111 and a second flow section 112 which are connected. The second flow section 112 is located on the outflow side of the first flow section 111, and the second flow section 112 is arranged between the first flow section 111 and the second cooling channel 20.

[0068] Since the second cooling channel 20 is located in the middle region of the cooling plate 100, the first channel 11 and the second channel 12 are located at the edge of the cooling plate 100 relative to the second cooling channel 20, the first channel 11 and the second channel 12 can include a first flow section 111 and a second flow section 112, the second flow section 112 is arranged between the first flow section 111 and the second cooling channel 20, that is, the first flow section 111 is arranged outside the second flow section 112. In this way, when the cooling liquid is introduced into the first cooling channel 10, the cooling liquid can first flow through the first flow section 111 outside, because the first flow section 111 is closer to the pole, the temperature is higher, and the cooling liquid first passes through the first flow section 111, the cooling efficiency is higher.

[0069] In some embodiments of the present application, at least part of the first flow section 111 can be arranged in parallel with at least part of the second flow section 112.

[0070] Since the second flow section 112 is arranged on the outflow side of the first flow section 111, at least part of the first flow section 111 is arranged in parallel with at least part of the second flow section 112, in this way, the second flow section 112 and the first flow section 111 can be arranged more uniformly and closely, so as to make the cooling effect of the cooling plate 100 more uniform.

[0071] In order to improve the cooling effect of the cooling plate 100, in some embodiments of the present application, the first channel 11 is provided with a turbulence structure 13. The turbulence structure 13 can increase the contact area of the cooling liquid with the cooling plate 100 body, thereby enhancing the heat exchange capacity of the cooling plate 100 and improving the heat exchange efficiency.

[0072] In some embodiments of the present application, the turbulence structure 13 includes a plurality of partitions 131 arranged in the extension direction of the first flow section 111. Since the plurality of partitions 131 are arranged in the extension direction of the first flow section 111, the partition 131 can guide the cooling liquid flowing through the first flow section 111, facilitating the smooth flow of the cooling liquid in the first channel 11, thereby achieving good heat dissipation of the battery.

[0073] In some embodiments of the present application, a plurality of turbulence structures 13 are arranged in the first channel 11, and the plurality of turbulence structures 13 are arranged in the first direction of the first channel 11, the first direction being perpendicular to the extension direction of the first flow section 111.

[0074] In this way, the contact area of the cooling liquid with the cooling plate 100 can be further increased, and the heat dissipation efficiency of the cooling plate 100 can be improved. At the same time, since the turbulence structure 13 is arranged in the first channel 11 perpendicular to the extension direction of the first flow section 111, the flow rate of the cooling liquid in the first channel 11 can be slowed down, and the turbulence intensity of the cooling liquid in the channel can be improved, thereby improving the heat exchange efficiency of the battery.

[0075] In some embodiments of the present application, the second channel 12 and the second cooling channel 20 are both provided with the turbulence structure 13. In this way, the heat exchange efficiency of the second channel 12 and the second cooling channel 20 can be improved, so that the heat exchange efficiency of the entire cooling plate 100 can be improved.

[0076] Please refer to Figure 1 and Figure 2 , Figure 2 for Figure 1 the local enlarged view of the cooling plate 100 at A, in some embodiments of the present application, the cooling plate 100 can further include a first inlet 101 and a first outlet 102, the first inlet 101 is communicated with the first flow section 111, and the first outlet 102 is communicated with the second flow section 112.

[0077] In this way, the cooling liquid can enter the first channel 11 through the first inlet 101, and then flow through the first flow section 111 and the second flow section 112 in turn, and flow out through the first outlet 102, so that the battery cells in the region where the first channel 11 is located can be heat exchanged.

[0078] In some embodiments of the present application, the first channel 11 and the second channel 12 are communicated. In this way, when the cooling liquid enters from the first inlet 101, the cooling liquid can flow through the first channel 11 and the second channel 12. Since the second cooling channel 20 is arranged between the first channel 11 and the second channel 12, the first channel 11 and the second channel 12 are arranged in the two side regions of the cooling plate 100, and since the battery pole includes the positive pole and the negative pole, the cooling liquid in the first channel 11 and the second channel 12 can heat exchange the positive pole region and the negative pole region respectively, so as to reduce the temperature difference between the battery near the pole region and the middle region.

[0079] In some embodiments of the present application, the second cooling channel 20 can include a third flow section 211 and a fourth flow section 212 communicated with each other, the fourth flow section 212 is located at the outflow side of the third flow section 211, and the cooling plate 100 further includes a second inlet 221 communicated with the third flow section 211, and a second outlet 222 communicated with the fourth flow section 212.

[0080] In this way, the cooling liquid can enter the second cooling channel 20 through the second inlet 221, and then flow through the third flow section 211 and the fourth flow section 212 in turn, and flow out through the second outlet 222, so that the battery cells in the region where the second cooling channel 20 is located can be heat exchanged, that is, the middle region of the battery cells is heat exchanged.

[0081] Since the first inlet 101 and the first outlet 102 are in communication with the first cooling channel 10, and the second inlet 221 and the second outlet 222 are in communication with the second cooling channel 20, the cooling liquid entering the first inlet 101 or the second inlet 221 can be controlled to control the cooling liquid entering the first cooling channel 10 to exchange heat with the region close to the pole of the battery cell, or the cooling liquid entering the second cooling channel 20 to exchange heat with the middle region of the battery cell. In this way, by controlling the first inlet 101 or the second inlet 221, the partitioned heat exchange of the battery cell can be realized, so as to reduce the temperature difference inside the battery cell, and further improve the performance of the battery.

[0082] Please refer to Figures 1 to 3 , Figure 3 A structural schematic diagram of a cooling plate assembly 1000 provided by an embodiment of the present application is shown. The cooling plate assembly 1000 can also be provided by an embodiment of the present application, which can include the cooling plate 100 described above. The cooling plate 100 can control the cooling liquid entering the first inlet 101 or the second inlet 221 to exchange heat with the battery cell in a partitioned manner.

[0083] Please refer to Figures 1 to 5 , Figure 4 A structural schematic diagram of an adjusting assembly 200 and a connecting piece 300 provided by an embodiment of the present application is shown. Figure 5 An internal structural schematic diagram of the adjusting assembly 200 provided by an embodiment of the present application is shown. In some embodiments of the present application, the cooling plate assembly 1000 can also include an adjusting assembly 200 having an inlet and an outlet. The outlet of the adjusting assembly 200 is in communication with the first cooling channel 10 and the second cooling channel 20. The adjusting assembly 200 is adapted to communicate the inlet with the first cooling channel 10, and / or the adjusting assembly 200 is adapted to communicate the inlet with the second cooling channel 20.

[0084] Since the outlet of the adjusting assembly 200 is in communication with the first cooling channel 10 and the second cooling channel 20, the cooling liquid flowing through the first cooling channel 10 and the second cooling channel 20 can enter the adjusting assembly 200 through the outlet.

[0085] Since the adjusting assembly 200 is adapted to communicate the inlet with the first cooling channel 10, and / or the adjusting assembly 200 is adapted to communicate the inlet with the second cooling channel 20, that is, the adjusting assembly 200 can adjust the inlet so that the inlet can be in communication with the first cooling channel 10, or in communication with the second cooling channel 20, or in communication with both the first cooling channel 10 and the second cooling channel 20,

[0086] In this way, the adjustment assembly 200 can adjust the cooling liquid to enter the first cooling channel 10 or the second cooling channel 20, so that the heat exchange state of the area where the first cooling channel 10 is located and the area where the second cooling channel 20 is located can be adjusted, so that the partition heat exchange of the battery cell can be realized.

[0087] In some embodiments of the present application, the liquid outlet can include a first liquid outlet 206 in communication with the first cooling channel 10 and a second liquid outlet 207 in communication with the second cooling channel 20.

[0088] In this way, the first liquid outlet 206 can be in communication with the first outlet 102, and the second liquid outlet 207 can be in communication with the second outlet 222, so that the cooling liquid flowing through the first cooling channel 10 and the second cooling channel 20 can be discharged.

[0089] In some embodiments, the liquid inlet can also include a first liquid inlet 204 in communication with the first cooling channel 10 and a second liquid inlet 205 in communication with the second cooling channel 20. In this way, the first liquid inlet 204 can be in communication with the first inlet 101, and the second liquid inlet 205 can be in communication with the second inlet 221, so that whether the cooling liquid can enter the first cooling channel 10 and the second cooling channel 20 can be realized by controlling the opening and closing state of the first liquid inlet 204 and the second liquid inlet 205.

[0090] In some embodiments of the present application, the adjustment assembly 200 can include a solenoid valve 203.

[0091] In a possible structural design, the solenoid valve 203 can be a four-way valve, and the four openings of the four-way valve are respectively the first liquid inlet 204, the second liquid inlet 205, the first liquid outlet 206 and the second liquid outlet 207. The four-way valve is in communication with the cooling liquid total inlet 201 and the cooling liquid total outlet 202. In this way, by controlling the four-way valve, the communication state of the first liquid inlet 204 and the second liquid inlet 205 with the cooling liquid total inlet 201 can be controlled, so that whether the cooling liquid can enter the first cooling channel 10 and the second cooling channel 20 can be controlled, and then the partition heat exchange of the battery cell can be realized.

[0092] In another possible structural design, the adjustment assembly 200 can include a liquid inlet channel 21 and a liquid outlet channel 22. The liquid inlet channel 21 is in communication with the first liquid inlet 204, the cooling liquid total inlet 201 and the second liquid inlet 205 in sequence. The liquid outlet channel 22 is in communication with the first liquid outlet 206, the cooling liquid total outlet 202 and the second liquid outlet 207 in sequence. The solenoid valve 203 is arranged between the cooling liquid total inlet 201 and the second liquid inlet 205.

[0093] In this way, in combination with the above description Figures 1 to 6 ,Figure 6 for Figure 5 The diagram shows the flow direction of the coolant when the solenoid valve is closed. When the battery is being charged and discharged at a low rate, the temperature in the terminal area is high and the temperature in the middle area of ​​the cell is low. The solenoid valve 203 can be closed, and the coolant can enter the first cooling channel 10 through the main coolant inlet 201, the first inlet 204 and the first inlet 101 to achieve heat exchange in the area near the terminal. Since the solenoid valve 203 is closed, the coolant will not enter the second inlet 205, and therefore cannot enter the second cooling channel 20, so no heat exchange is performed in the middle area of ​​the cell.

[0094] Combined with reference Figures 1 to 7 , Figure 7 for Figure 5 The diagram shows the flow direction of the coolant when the solenoid valve is open. When the battery is charged and discharged at a high rate, the temperature of the cell terminal area and the middle area is high. The solenoid valve 203 can be opened, and the coolant can flow through the coolant main inlet 201 to the first inlet 204 and the second inlet 205, so that it can enter the first cooling channel 10 and the second cooling channel 20, thereby exchanging heat for both the cell terminal area and the middle area.

[0095] In some embodiments, the opening degree of the solenoid valve 203 can be adjusted. By adjusting the opening degree of the solenoid valve 203, the coolant flow distribution of the first cooling channel 10 and the second cooling channel 20 can be controlled, thereby controlling the battery temperature difference.

[0096] In this way, the cooling plate assembly 1000 can distribute the coolant flow according to the temperature of different areas, which can reduce the waste of cooling capacity, reduce the internal temperature difference of the battery, and improve battery performance.

[0097] Since the first inlet 204 needs to be connected to the first inlet 101, the second inlet 205 needs to be connected to the second inlet 221, the first outlet 206 needs to be connected to the first outlet 102, and the second outlet 207 needs to be connected to the second outlet 222, in some embodiments of this application, the cooling plate assembly 1000 may further include a connector 300 connecting the adjusting assembly 200 and the cooling plate 100. This connector 300 enables communication between the first inlet 204 and the first inlet 101, between the second inlet 205 and the second inlet 221, between the first outlet 206 and the first outlet 102, and between the second outlet 207 and the second outlet 222.

[0098] In some embodiments, the connector 300 may include water pipes to connect the various openings. However, connecting via water pipes involves a large number of pipes, which can easily lead to errors during connection and also occupies a large amount of package space.

[0099] Therefore, in some embodiments of the present application, the connecting member 300 can include a connecting plate 300A, and a communication passage 310 is formed on the connecting plate 300A, the communication passage 310 is communicated between the adjusting assembly 200 and the first cooling passage 10, and the communication passage 310 is communicated between the adjusting assembly 200 and the second cooling passage 20. In this way, the connection between the four pairs of openings can be integrated through the connecting plate 300A, the connection is simple and convenient, and the occupied space is small.

[0100] In some embodiments, the connecting plate 300A can include a connecting flat plate 301 and a connecting flow channel plate 302, the connecting flow channel plate 302 is provided with a flow channel, and the connecting flat plate 301 and the connecting flow channel plate 302 are connected to form the communication passage 310 for the flow of the cooling liquid.

[0101] For example, the connecting flat plate 301 and the connecting flow channel plate 302 can be connected by welding, and the connecting flat plate 301 and the connecting flow channel plate 302 can be connected by bonding, which is not limited in the present application.

[0102] In some embodiments, the communication passage 310 can include a first communication passage 311, a second communication passage 312, a third communication passage 313 and a fourth communication passage 314, the first communication passage 311 is respectively communicated with the first liquid inlet 204 and the first inlet 101, the second communication passage 312 is respectively communicated with the second liquid inlet 205 and the second inlet 221, the third communication passage 313 is respectively communicated with the first liquid outlet 206 and the first outlet 102, and the fourth communication passage 314 is respectively communicated with the second liquid outlet 207 and the second outlet 222.

[0103] In this way, the cooling liquid can flow between the adjusting assembly 200 and the cooling plate 100 through the first communication passage 311, the second communication passage 312, the third communication passage 313 and the fourth communication passage 314, so that the heat exchange cooling of the battery can be realized.

[0104] The present application also provides a battery pack, which can include the above-mentioned cooling plate assembly 1000.

[0105] In some embodiments of the present application, the battery plate can also include a battery cell, and at least part of the cooling plate assembly 1000 is attached to the battery cell.

[0106] The battery cell is provided with a pole on both sides. When the battery works, the area close to the pole is a high heat generation area, and the area far from the pole in the middle of the battery cell is a low heat generation area. The cooling plate 100 is attached to the battery cell, wherein the first cooling channel 10 corresponds to the high heat generation area, and the second cooling channel 20 corresponds to the low heat generation area. In this way, by controlling whether the cooling liquid flows into the first cooling channel 10 and the second cooling channel 20, the zoned cooling of the battery cell can be realized.

[0107] In some embodiments of the present application, the battery pack can further include a temperature detection device arranged on the battery cell and adapted to detect the temperature of the battery cell. The temperature detection device can be electrically connected to the electromagnetic valve 203.

[0108] In this way, when the temperature detection device detects that the temperature of the battery cell reaches the temperature that needs to be cooled, the cooling liquid is introduced into the cooling plate 100 to realize heat exchange of the battery cell, thereby reducing the waste of cooling capacity.

[0109] In some embodiments of the present application, the temperature detection device can include a first temperature detection device and a second temperature detection device. The projection of the first temperature detection device on the battery cell is located within the projection of the first cooling channel 10 on the battery cell, and the projection of the second temperature detection device on the battery cell is located within the projection of the second cooling channel 20 on the battery cell.

[0110] In this way, the first temperature detection device can detect the temperature of the area close to the pole of the battery cell, and the second temperature detection device can detect the temperature of the middle area of the battery cell. When the temperature value detected by the first temperature detection device reaches the temperature that needs to be cooled, and the temperature value detected by the second temperature detection device does not reach the temperature that needs to be cooled, the electromagnetic valve 203 is closed, and only the area close to the pole of the battery cell is subjected to heat exchange. When the temperature value detected by the first temperature detection device and the temperature value detected by the second temperature detection device both reach the temperature that needs to be cooled, the electromagnetic valve 203 is opened, and the entire battery cell is cooled and subjected to heat exchange.

[0111] At the same time, the control system of the vehicle can control the opening degree of the electromagnetic valve 203 according to the temperature value detected by the first temperature detection device and the temperature value detected by the second temperature detection device, thereby realizing the flow distribution of the cooling liquid and reducing the internal temperature difference of the battery.

[0112] The embodiments of the present application also provide a vehicle, which can include the above cooling plate 100, cooling plate assembly 1000 or battery pack. Through the zoned cooling of the cooling plate 100, the performance of the battery pack can be improved, thereby improving the performance of the vehicle.

[0113] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0114] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cooling plate, characterized in that, It includes a first cooling channel (10) and a second cooling channel (20) that are independently arranged. The first cooling channel (10) includes a first channel (11) and a second channel (12). The second cooling channel (20) is disposed between the first channel (11) and the second channel (12). Both the first channel (11) and the second channel (12) include a first flow section (111) and a second flow section (112) that are connected to each other. The second flow section (112) is located on the outflow side of the first flow section (111) and is located between the first flow section (111) and the second cooling channel (20).

2. The cooling plate according to claim 1, characterized in that, At least a portion of the first flow segment (111) is arranged parallel to at least a portion of the second flow segment (112).

3. The cooling plate according to claim 2, characterized in that, The first channel (11) is equipped with a turbulence structure.

4. The cooling plate according to claim 3, characterized in that, The turbulence structure includes a plurality of baffles spaced apart along the extension direction of the first flow section (111).

5. The cooling plate according to claim 4, characterized in that, Multiple sets of turbulence structures are provided in the first channel (11), and the multiple turbulence structures are spaced apart along the first direction of the first channel (11), the first direction being the extension direction perpendicular to the first flow segment (111).

6. The cooling plate according to any one of claims 3-5, characterized in that, Both the second channel (12) and the second cooling channel (20) are provided with the aforementioned turbulence structure.

7. The cooling plate according to claim 2, characterized in that, It also includes a first inlet (101) and a first outlet (102), the first inlet (101) being connected to the first flow section (111) and the first outlet (102) being connected to the second flow section (112).

8. The cooling plate according to claim 7, characterized in that, The first channel (11) and the second channel (12) are connected.

9. The cooling plate according to claim 8, characterized in that, The second cooling channel (20) includes a third flow section (211) and a fourth flow section (212) that are connected to each other. The fourth flow section (212) is located on the outflow side of the third flow section (211). The cooling plate also includes a second inlet (221) connected to the third flow section (211) and a second outlet (222) connected to the fourth flow section (212).

10. A cooling plate assembly, characterized in that, Includes the cooling plate (100) as described in any one of claims 1-9.

11. The cooling plate assembly according to claim 10, characterized in that, It also includes an adjustment assembly (200) having an inlet and an outlet, the outlet of the adjustment assembly (200) being connected to both the first cooling channel (10) and the second cooling channel (20), the adjustment assembly (200) being adapted to connect the inlet to the first cooling channel (10), and / or, the adjustment assembly (200) being adapted to connect the inlet to the second cooling channel (20).

12. The cooling plate assembly according to claim 11, characterized in that, The liquid outlet includes a first liquid outlet (206) connected to the first cooling channel (10) and a second liquid outlet (207) connected to the second cooling channel (20).

13. The cooling plate assembly according to claim 11 or 12, characterized in that, The regulating assembly (200) includes a solenoid valve (203).

14. The cooling plate assembly according to claim 11 or 12, characterized in that, It also includes a connector (300) connecting the adjustment assembly (200) and the cooling plate (100).

15. The cooling plate assembly according to claim 14, characterized in that, The connector (300) includes a connecting plate (300A) on which a connecting channel (310) is formed. The connecting channel (310) connects the adjusting component (200) and the first cooling channel (10), and the connecting channel (310) connects the adjusting component (200) and the second cooling channel (20).

16. A battery pack, characterized in that, Includes the cooling plate assembly (1000) as described in any one of claims 10-15.

17. The battery pack according to claim 16, characterized in that, It also includes a battery cell, with at least a portion of the cooling plate assembly (1000) attached to the battery cell.

18. The battery pack according to claim 17, characterized in that, It also includes a temperature detection device, which is disposed on the battery cell and is suitable for detecting the temperature of the battery cell.

19. The battery pack according to claim 18, characterized in that, The temperature detection device includes a first temperature detection device and a second temperature detection device. The projection of the first temperature detection device on the battery cell is located within the projection of the first cooling channel (10) on the battery cell, and the projection of the second temperature detection device on the battery cell is located within the projection of the second cooling channel (20) on the battery cell.

20. A vehicle, characterized in that, Includes the cooling plate (100) according to any one of claims 1-9, or the cooling plate assembly (1000) according to any one of claims 10-15, or the battery pack according to any one of claims 16-19.

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