Heat exchange assembly, battery and electric device

Abstract

The application discloses a heat exchange assembly, a battery and a power utilization device, and belongs to the technical field of batteries. The heat exchange assembly comprises a heat exchange plate, and the heat exchange plate is provided with a total inlet, a total outlet and a plurality of branch flow channels connected between the total inlet and the total outlet. The inlet end of the branch flow channel is connected with the total inlet through an inlet flow guide section, and the flow passage sectional area of the inlet flow guide section is first reduced and then enlarged along the medium flow direction. In the technical scheme of the application, the generation of vortex can be reduced by accurately controlling the size and shape of the branch flow channel and the inlet flow guide section, the balance between the heat dissipation performance and the fluid resistance is further realized, the flow uniformity of the flow channels in different regions and the heat exchange efficiency of the heat exchange assembly are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a heat exchange assembly, a battery and a power utilization device. BACKGROUND

[0002] The battery pack generates high heat density in the working process, and the heat exchange plate is usually placed between two layers of batteries for heat exchange. In the related technology, the flow channel of the heat exchange plate is usually designed in a curved shape, and local vortex is easily formed at the turning part of the flow channel, which causes uneven fluid flow rate, and further causes heat stress concentration, affects the heat exchange efficiency, and there is room for improvement. SUMMARY

[0003] The application aims to at least solve the technical problem of poor temperature uniformity of the battery cell in the related technology. To this end, the application provides a heat exchange assembly, a battery and a power utilization device, which can improve the heat exchange efficiency of the heat exchange assembly.

[0004] In a first aspect, the application provides a heat exchange assembly, comprising a heat exchange plate, the heat exchange plate being provided with a total inlet, a total outlet and a plurality of branch flow channels connected between the total inlet and the total outlet, wherein the inlet end of the branch flow channel is connected to the total inlet through the inlet flow guide section, and the flow passage cross-sectional area of the inlet flow guide section decreases and then expands along the medium flow direction.

[0005] By accurately controlling the size and shape of the branch flow channel and the inlet flow guide section, the generation of vortex can be reduced, the balance between heat dissipation performance and fluid resistance is further achieved, the flow uniformity of different regions of the flow channel and the heat exchange efficiency of the heat exchange assembly are improved.

[0006] According to an embodiment of the application, the included angle between each branch flow channel and the corresponding inlet flow guide section is negatively related to the flow channel distance from the branch flow channel to the total inlet.

[0007] By adjusting the included angle between the branch flow channel and the corresponding inlet flow guide section, the branch flow channel in different regions can obtain appropriate flow rate and flow velocity, so as to improve the heat dissipation uniformity of the entire heat dissipation surface and reduce the risk of system failure caused by local overheating or insufficient flow.

[0008] According to an embodiment of the application, the outlet end of the branch flow channel is connected to the total outlet through the outlet flow guide section, and the flow passage cross-sectional area of the outlet flow guide section decreases and then expands along the medium flow direction.

[0009] The design of the inlet flow guide section and the outlet flow guide section can form an efficient fluid flow channel. The inlet flow guide section accelerates the fluid and reduces vortex to improve the heat exchange efficiency, and the outlet flow guide section optimizes the flow velocity and pressure distribution to help the fluid smoothly leave the branch flow channel.

[0010] According to one embodiment of this application, the angle between each of the branch channels and the corresponding outlet guide section is negatively correlated with the channel distance from the branch channel to the total outlet.

[0011] By adjusting the angle between the branch channel and the corresponding outlet guide section, the fluid in the channel from the branch channel to the main outlet can obtain appropriate flow rate and velocity, thereby improving the heat dissipation uniformity of the entire heat dissipation surface and reducing the risk of system failure due to local overheating or insufficient flow.

[0012] According to one embodiment of this application, the heat exchange plate is provided with: an inlet manifold, an outlet manifold, and multiple partitioned flow channels, each of the partitioned flow channels including multiple branch channels, each of the partitioned flow channels being connected between the main inlet and the main outlet, the inlet manifold being connected between the main inlet and each of the partitioned flow channels, and the outlet manifold being connected between the main outlet and each of the partitioned flow channels.

[0013] The heat exchange plate is provided with multiple partitioned flow channels and multiple branch flow channels inside, which can achieve uniform heat distribution, precise flow control and maximize heat exchange efficiency.

[0014] According to one embodiment of this application, the plurality of partitioned flow channels are arranged sequentially around each other.

[0015] Multiple partitioned flow channels are arranged in sequence around each other, which can achieve uniform heat distribution and stable fluid flow.

[0016] According to one embodiment of this application, the branch channel includes an inlet branch channel and a return branch channel; the partitioned channel includes a main inlet branch, a plurality of the inlet branch channels, a confluence branch, a plurality of the return branch channels, and a main outlet branch channel connected in sequence. The inlet end of the main inlet branch channel is connected to the main inlet through the inlet manifold, and the outlet end of the main outlet branch channel is connected to the main outlet through the outlet manifold.

[0017] By subdividing the branch channels and constructing the partitioned channel system, precise control and efficient utilization of the cooling medium can be achieved, thereby improving heat dissipation efficiency and the uniformity of fluid flow.

[0018] According to one embodiment of this application, the inlet main branches of the plurality of partitioned flow channels are arranged adjacent to each other, the inlet branch channels of the plurality of partitioned flow channels are arranged adjacent to each other, the confluence branch channels of the plurality of partitioned flow channels are arranged adjacent to each other, the return branch channels of the plurality of partitioned flow channels are arranged adjacent to each other, and the outlet main branches of the plurality of partitioned flow channels are arranged adjacent to each other.

[0019] The arrangement of the components of the multiple partitioned flow channels adjacent to each other can optimize the fluid flow path and help improve space utilization and thermal management efficiency.

[0020] According to one embodiment of this application, at least some of the partitioned flow channels are provided with a plurality of the confluence branches, and the confluence branches of adjacent partitioned flow channels are connected.

[0021] At least some of the partitioned flow channels are provided with multiple converging branches, and adjacent converging branches are connected in adjacent partitioned flow channels, which helps to optimize the flow path of the cooling medium, reduce thermal resistance and temperature difference, thereby improving heat dissipation efficiency.

[0022] Secondly, this application provides a battery, characterized in that it comprises:

[0023] Battery pack;

[0024] The heat exchange assembly as described in any one of the above statements is used to exchange heat with the battery pack.

[0025] The heat exchange component can quickly remove the heat generated by the battery pack. By controlling the temperature of the battery pack, problems such as battery aging and capacity decay caused by high temperature can be reduced, thereby extending the service life of the battery.

[0026] According to one embodiment of this application, the battery includes:

[0027] The housing forms a receiving cavity, in which the battery pack and the heat exchange assembly are installed;

[0028] The pipe joint is connected to the total inlet and total outlet of the heat exchange assembly and is made of metal. The pipe joint passes through the front beam of the housing.

[0029] By integrating the housing, battery pack, heat exchange components, and pipe joints, a highly efficient, reliable, and easy-to-maintain battery system can be formed.

[0030] Thirdly, this application provides an electrical device, including a battery for providing electrical energy to the electrical device.

[0031] The electrical device integrates the battery as an energy source to drive its internal working mechanism or perform specific functions.

[0032] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0033] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 This is a schematic diagram of the battery structure provided in the embodiments of this application;

[0035] Figure 2 This is a schematic diagram of the structure of the heat exchange plate of the heat exchange component provided in the embodiments of this application;

[0036] Figure 3 This is a schematic diagram of the first partition flow channel of the heat exchange plate of the heat exchange component provided in the embodiments of this application;

[0037] Figure 4 This is a schematic diagram of the second partition flow channel of the heat exchange plate of the heat exchange component provided in the embodiments of this application;

[0038] Figure 5 This is a schematic diagram of the third-section flow channel of the heat exchange plate of the heat exchange component provided in the embodiments of this application;

[0039] Figure 6 This is a schematic diagram of the structure of the heat exchange component provided in the embodiments of this application;

[0040] Figure 7 This is a schematic diagram of the structure of the battery connector provided in the embodiments of this application.

[0041] Figure label:

[0042] Battery 1;

[0043] Heat exchange component 10;

[0044] Heat exchange plate 110, base plate 120;

[0045] Total imports: 1111; Total exports: 1112.

[0046] Branch channel 112, inlet branch channel 1121, return branch channel 1122;

[0047] Inlet guide section 113, first inlet guide section 113a, second inlet guide section 113b, third inlet guide section 113c;

[0048] Outlet guide section 114, first outlet guide section 114a, second outlet guide section 114b, third outlet guide section 114c;

[0049] Inlet manifold 1151, outlet manifold 1152;

[0050] Partitioned flow channel 116, first partition flow channel 116a, second partition flow channel 116b, third partition flow channel 116c;

[0051] Import branch road 117, first import branch road 117a, second import branch road 117b, third import branch road 117c;

[0052] Converging branch 118, first converging branch 1181, second converging branch 1182, third converging branch 1183;

[0053] Outbound main branch 119, first outbound main branch 119a, second outbound main branch 119b, third outbound main branch 119c;

[0054] Battery pack 20;

[0055] Box body 30, front beam 310;

[0056] Pipe fitting 40, brazed column 410, adapter round pipe 420, sealing mounting block 430, threaded connector 440, sealing ring 450;

[0057] First direction X, second direction Y. Detailed Implementation

[0058] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0059] This application aims to at least address the technical problem of poor cell temperature uniformity in related technologies. To this end, this application proposes a heat exchange component, a battery, and an electrical device that can improve the heat exchange efficiency of the heat exchange component.

[0060] The following is for reference. Figures 1-7 The heat exchange assembly 10 according to an embodiment of this application is described.

[0061] like Figure 1 and Figure 2 As shown, the heat exchange assembly 10 includes a heat exchange plate 110, which has a main inlet 1111, a main outlet 1112, and a plurality of branch channels 112 connected between the main inlet 1111 and the main outlet 1112. The inlet end of the branch channel 112 is connected to the main inlet 1111 through an inlet guide section 113. The flow cross-sectional area of ​​the inlet guide section 113 first decreases and then expands along the medium flow direction.

[0062] The heat exchange plate 110 is the core component of the heat exchange assembly 10. It mainly guides the cooling medium to the surface of the component that needs heat dissipation through its internal fluid channels, and removes heat through heat exchange. When the cooling medium is water, ethylene glycol or other coolant, the heat exchange plate 110 can be a liquid cooling plate. The fluid channels inside the heat exchange plate 110 are multiple branch channels 112 connecting the main inlet 1111 and the main outlet 1112. Multiple branch channels 112 can evenly distribute the cooling medium to each area, thereby improving the uniformity of heat dissipation. The shape, number and layout of the branch channels 112 will directly affect the cooling effect.

[0063] The inlet end of the branch channel 112 is connected to the main inlet 1111 through the inlet guide section 113. The cooling medium enters from the main inlet 1111 and then enters the branch channel 112 through the inlet guide section 113. The flow cross-sectional area of ​​the inlet guide section 113 first decreases and then expands along the flow direction of the medium, forming a Laval structure that first contracts and then expands, which can accelerate the fluid and reduce the generation of eddies.

[0064] At the inlet of branch channel 112, the sudden change in channel geometry causes boundary layer separation of the fluid. The separated fluid forms vortices in the low-pressure area. These vortices cause disturbances in the flow direction of the fluid, increasing fluid resistance and system energy consumption, and reducing heat exchange efficiency. At the same time, the vortices formed in the low-pressure area cause uneven local stress on the material, resulting in local fatigue of the plate and affecting its service life.

[0065] Before entering the branch channel 112, the fluid is located in the inlet guide section 113. As the fluid flows, the flow cross-sectional area of ​​the inlet guide section 113 gradually decreases, and the fluid velocity gradually increases, forming a high-pressure zone. This acceleration helps to increase the fluid flow velocity in the branch channel 112, thereby improving the heat exchange efficiency.

[0066] Understandably, the gradual narrowing and subsequent widening of the inlet guide section 113 can guide the flow direction of the fluid, effectively reduce the generation of eddies, and allow the fluid to enter the branch channel 112 more smoothly.

[0067] The battery pack 20 generates a high heat density during operation, and heat exchange plates 110 are typically placed between two layers of battery pack 20 for heat exchange. In related technologies, the flow channels within the heat exchange plate 110 are complex, especially the excessively high flow rate of the busbar branch 118. This causes the heat exchange area at the edge of the heat exchange plate 110 to be much greater than the heat exchange area of ​​the battery cell, resulting in localized overheating or undercooling of the battery cells at the inner edge of the battery pack 20. This leads to poor temperature uniformity of the battery cells, affecting their normal operation and lifespan, and there is room for improvement.

[0068] According to the heat exchange component 10 provided in the embodiments of this application, by precisely controlling the size and shape of the branch channel 112 and the inlet guide section 113, the generation of eddies can be reduced, further achieving a balance between heat dissipation performance and fluid resistance, improving the flow uniformity of different zoned channels 116 and the heat exchange efficiency of the heat exchange component 10.

[0069] In some embodiments, such as Figures 3-5 As shown, the angle between each branch channel 112 and the corresponding inlet guide section 113 is negatively correlated with the flow distance from the branch channel 112 to the main inlet 1111. This is intended to balance the distribution and flow velocity of the fluid in different branch channels 112, thereby improving the heat transfer uniformity.

[0070] The greater the flow distance from the branch channel 112 to the main inlet 1111, the more flow is distributed in the branch channel 112, the greater the fluid kinetic energy, and the easier it is to flow in the original direction. The angle between the branch channel 112 and the corresponding inlet guide section 113 is set to an acute angle, which can adjust the fluid flow direction to achieve uniform flow distribution in different branch channels 112.

[0071] When the flow distance from the branch channel 112 to the main inlet 1111 is far, the fluid loss in the flow channel is large, and the fluid velocity and pressure will gradually decrease. More flow rate needs to be allocated to improve the fluid's kinetic energy. Setting the angle between the branch channel 112 and the corresponding inlet guide section 113 to an acute angle can guide the flow direction of the fluid, effectively reduce the generation of eddies, and allow the fluid to enter the branch channel 112 more smoothly.

[0072] Correspondingly, when the flow distance from the branch channel 112 to the main inlet 1111 is relatively short, the fluid loss in the flow channel is small, its flow velocity and pressure are relatively high, and the allocated flow rate is less. Setting the angle between the branch channel 112 and the corresponding inlet guide section 113 as a right angle can reduce the impact on the fluid, thereby making it easier for the flow velocity of the fluid entering the branch channel 112 to be consistent with that of other branch channels 112.

[0073] It is understandable that by adjusting the angle between the branch channel 112 and the corresponding inlet guide section 113, the branch channels 112 in different areas can obtain appropriate flow rates and velocities, thereby improving the heat dissipation uniformity of the entire heat dissipation surface and reducing the risk of system failure due to local overheating or insufficient flow.

[0074] In some embodiments, such as Figures 3-5 As shown, the outlet end of the branch channel 112 is connected to the main outlet 1112 through the outlet guide section 114. The flow cross-sectional area of ​​the outlet guide section 114 first decreases and then expands along the medium flow direction.

[0075] The outlet end of the branch channel 112 is connected to the main outlet 1112 through the outlet guide section 114. The flow cross-sectional area of ​​the outlet guide section 114 first decreases and then expands along the medium flow direction, similar to the inlet guide section 113, forming a Laval structure that first contracts and then expands, which can accelerate the fluid and reduce the generation of eddies.

[0076] At the outlet end of branch channel 112, the sudden change in channel geometry causes boundary layer separation of the fluid. The separated fluid forms vortices in the low-pressure area. These vortices cause disturbances in the flow direction of the fluid, increasing fluid resistance and system energy consumption, and reducing heat exchange efficiency. At the same time, the vortices formed in the low-pressure area cause uneven local stress on the material, resulting in local fatigue of the plate and affecting its service life.

[0077] At the beginning of the outlet guide section 114, the reduction of the flow cross-sectional area will increase the fluid velocity. This acceleration effect helps to remove heat from the fluid more quickly and reduce stagnation and accumulation at the outlet. Subsequently, the expansion of the flow cross-sectional area will gradually reduce the fluid velocity. This expansion effect helps the fluid leave the branch channel 112 more smoothly and reduces turbulence and eddies caused by sudden changes.

[0078] The gradual narrowing and subsequent widening of the outlet guide section 114 can guide the flow direction of the fluid, effectively reduce the generation of eddies, and allow the fluid to flow out of the branch channel 112 more smoothly. In actual operation, the flow direction of the fluid is mainly guided by a relatively long guide line.

[0079] By adjusting the shape and size of the outlet guide section 114, the flow rate and pressure distribution of the fluid at the outlet end of the branch channel 112 can be further controlled, helping the fluid to continue flowing at a higher speed after leaving the branch channel 112, thereby improving heat dissipation efficiency.

[0080] Understandably, the design of the inlet guide section 113 and the outlet guide section 114 combined can form an efficient fluid flow channel. The inlet guide section 113 improves heat exchange efficiency by accelerating the fluid and reducing eddies, while the outlet guide section 114 helps the fluid to smoothly leave the branch channel 112 by optimizing the flow velocity and pressure distribution.

[0081] In some embodiments, such as Figures 3-5 As shown, the angle between each branch channel 112 and the corresponding outlet guide section 114 is negatively correlated with the flow distance from the branch channel 112 to the total outlet 1112.

[0082] When the flow distance from the branch channel 112 to the main outlet 1112 is relatively far, the angle between the branch channel 112 and the corresponding outlet guide section 114 is set to an acute angle, which can guide the flow direction of the fluid, effectively reduce the generation of eddies, and make the fluid flow out of the branch channel 112 more smoothly. Conversely, when the flow distance from the branch channel 112 to the main outlet 1112 is relatively short, the angle between the branch channel 112 and the corresponding outlet guide section 114 is set to a right angle, which can reduce the impact on the fluid, so that the flow velocity of the fluid when flowing out of the branch channel 112 tends to be consistent with that of other branch channels 112.

[0083] It is understandable that by adjusting the angle between the branch channel 112 and the corresponding outlet guide section 114, the fluid in the flow channel from the branch channel 112 to the main outlet 1112 can obtain appropriate flow rate and velocity, thereby improving the heat dissipation uniformity of the entire heat dissipation surface and reducing the risk of system failure due to local overheating or insufficient flow.

[0084] In some embodiments, such as Figures 2-5 As shown, the heat exchange plate 110 is provided with: an inlet manifold 1151, an outlet manifold 1152 and multiple partitioned flow channels 116. Each partitioned flow channel 116 includes multiple branch channels 112. Each partitioned flow channel 116 is connected between the main inlet 1111 and the main outlet 1112. The inlet manifold 1151 is connected between the main inlet 1111 and each partitioned flow channel 116. The outlet manifold 1152 is connected between the main outlet 1112 and each partitioned flow channel 116.

[0085] By dividing the heat exchange plate 110 into multiple zoned flow channels 116, heat can be distributed more evenly on the heat dissipation surface. Each zoned flow channel 116 is responsible for heat dissipation in a specific area, reducing uneven heat dissipation caused by excessive or insufficient local flow. The zoned flow channels 116 can also independently control their internal flow to adapt to the heat dissipation needs of different areas. For example, in areas where heat is generated, the flow of the zoned flow channel 116 can be increased to improve heat dissipation efficiency.

[0086] Each partition flow channel 116 is connected between the main inlet 1111 and the main outlet 1112, and contains multiple branch channels 112, which can form a complete fluid circulation system. The multiple branch channels 112 work together to guide the cooling medium from the main inlet 1111 to the main outlet 1112 and distribute it evenly to the entire partition, while realizing heat dissipation in specific areas.

[0087] The inlet manifold 1151 is connected between the main inlet 1111 and each zone flow channel 116, and the outlet manifold 1152 is connected between the main outlet 1112 and each zone flow channel 116. The fluid enters the inlet manifold 1151 from the main inlet 1111, is distributed to different zone flow channels 116 in the inlet manifold 1151, flows out from different zone flow channels 116 and merges into the outlet manifold 1152, and then flows out from the main outlet 1112.

[0088] It is understandable that by setting multiple zoned flow channels 116 and multiple branch flow channels 112 inside the heat exchange plate 110, the uniform distribution of heat, precise control of flow rate and maximization of heat exchange efficiency can be achieved.

[0089] The first direction X is the length direction of the heat exchange plate 110, which is the fluid flow direction at the total inlet 1111 and the total outlet 1112. The second direction Y is the width direction of the heat exchange plate 110. The first direction X and the second direction Y intersect.

[0090] The partitioned flow channel 116 can be configured in various ways, including but not limited to:

[0091] Example 1: The fluid flow direction of the branch channel 112 is the second direction Y, and multiple partition channels 116 are arranged sequentially along the first direction X.

[0092] The fluid flow direction at the main inlet 1111 and the main outlet 1112 is the first direction X. The fluid flow direction of the branch channel 112 is perpendicular to the fluid flow direction at the main inlet 1111 and the main outlet 1112. Multiple partition channels 116 are arranged sequentially along the first direction X. Each partition channel 116 is connected between the main inlet 1111 and the main outlet 1112 and includes multiple parallel and non-influencing branch channels 112, which can form a complete fluid circulation system. The multiple branch channels 112 mix at the main inlet 1111 and the main outlet 1112.

[0093] Example 2: The fluid flow direction of the branch channel 112 is the first direction X, and multiple partition channels 116 are arranged sequentially along the second direction Y.

[0094] The fluid flow direction at the main inlet 1111 and the main outlet 1112 is the first direction X. The fluid flow direction of the branch channel 112 is the same as that at the main inlet 1111 and the main outlet 1112. Multiple partition channels 116 are arranged sequentially along the second direction Y. Each partition channel 116 is connected between the main inlet 1111 and the main outlet 1112 and includes multiple parallel and non-influencing branch channels 112, which can form a complete fluid circulation system. The multiple branch channels 112 mix at the main inlet 1111 and the main outlet 1112.

[0095] Example 3: The fluid flow direction of the branch channel 112 is the first direction X, and multiple partition channels 116 are arranged sequentially around it along the second direction Y.

[0096] The fluid flow direction at the main inlet 1111 and the main outlet 1112 is the first direction X. The fluid flow direction of the branch channel 112 is the same as that at the main inlet 1111 and the main outlet 1112. Multiple partition channels 116 are arranged sequentially around the main inlet 1111 and the main outlet 1112. Each partition channel 116 is connected between the main inlet 1111 and the main outlet 1112 and includes multiple parallel and non-influencing branch channels 112, which can form a complete fluid circulation system. The multiple branch channels 112 mix at the main inlet 1111 and the main outlet 1112.

[0097] The following example uses the fluid flow direction of the branch channel 112 as the first direction X, and multiple partitioned channels 116 are arranged to surround it sequentially along the second direction Y.

[0098] In some embodiments, such as Figures 2-5 As shown, multiple zoned flow channels 116 are arranged sequentially around each other.

[0099] The fluid flow direction of the branch channel 112 is the first direction X, and multiple U-shaped partition channels 116 are arranged in sequence around the second direction Y. The first partition channel 116a is located at the outermost edge of the heat exchange plate 110, and from the outside to the inside are the first partition channel 116a, the second partition channel 116b and the third partition channel 116c.

[0100] After the fluid enters the inlet manifold 1151 from the main inlet 1111, it enters the first partition flow channel 116a, the second partition flow channel 116b, and the third partition flow channel 116c respectively to achieve fluid diversion, thereby reducing pressure drop. The partition flow channels 116 are mainly distributed according to the distribution area of ​​heat generated by the battery 1. The first partition flow channel 116a is responsible for heat exchange in the battery core and tab area, and the second partition flow channel 116b is responsible for heat exchange in the central area of ​​the battery.

[0101] After being split, merged, and split again in the branch channels 112 of different zone flow channels 116, the fluid flows out of the first zone flow channel 116a, the second zone flow channel 116b, and the third zone flow channel 116c respectively. After merging in the outlet manifold 1152, it flows out from the total outlet 1112. The U-shaped structure has a shorter flow path, a smaller pressure drop, and a stronger heat exchange capacity. Furthermore, the diameters of the branch channels 112 of different zone flow channels 116 are set to increase sequentially to balance the pressure drop of different zone flow channels 116. Specifically, the diameter of the branch channel 112 of the first zone flow channel 116a is the largest, the diameter of the branch channel 112 of the second zone flow channel 116b is the second largest, and the diameter of the branch channel 112 of the third zone flow channel 116c is the smallest.

[0102] Understandably, the sequential arrangement of multiple zoned flow channels 116 can achieve uniform heat distribution and stable fluid flow.

[0103] In some embodiments, such as Figures 2-5 As shown, the branch channel 112 includes an inlet branch channel 1121 and a return branch channel 1122; the zoned channel 116 includes a main inlet branch 117, multiple inlet branch channels 1121, a confluence branch 118, multiple return branch channels 1122 and a main outlet branch 119 connected in sequence. The inlet end of the main inlet branch 117 is connected to the main inlet 1111 through an inlet manifold 1151, and the outlet end of the main outlet branch 119 is connected to the main outlet 1112 through an outlet manifold 1152.

[0104] The inlet end of the main inlet branch 117 is connected to the main inlet 1111 via the inlet manifold 1151. As the starting point of the partitioned flow channel 116, the main inlet branch 117 is responsible for distributing the cooling medium entering the inlet manifold 1151 from the main inlet 1111 to each inlet branch 1121. Multiple inlet branches 1121 branch off from the main inlet branch 117, each responsible for delivering the cooling medium to a specific heat dissipation area. The number and layout of the inlet branches 1121 are optimized according to the heat dissipation requirements and heat source distribution.

[0105] After heat exchange is completed, the cooling medium in each inlet branch channel 1121 is collected into the manifold branch 118. The manifold branch 118 branches into multiple return water branches 1122, which are responsible for transporting the cooling medium back to the outlet main branch 119. The outlet main branch 119 serves as the end point of the partitioned flow channel 116. The outlet end of the outlet main branch 119 is connected to the main outlet 1112 through the outlet manifold pipe 1152, which is responsible for collecting and discharging the cooling medium from each return water branch channel 1121.

[0106] It is understandable that by using the fine branched flow channels 112 and constructing the partitioned flow channel system 116, precise control and efficient utilization of the cooling medium can be achieved, thereby improving heat dissipation efficiency and the uniformity of fluid flow.

[0107] In some embodiments, such as Figures 2-5 As shown, the inlet main branch 117 of the multiple zoned flow channels 116 are arranged adjacently, the inlet branch channels 1121 of the multiple zoned flow channels 116 are arranged adjacently, the confluence branch channels 118 of the multiple zoned flow channels 116 are arranged adjacently, the return branch channels 1122 of the multiple zoned flow channels 116 are arranged adjacently, and the outlet main branch channel 119 of the multiple zoned flow channels 116 are arranged adjacently.

[0108] Adjacent arrangement can maximize the use of space in the heat exchange plate 110, reduce unnecessary gaps and waste, and through compact layout, each zone flow channel 116 can effectively cover the heat dissipation area, thereby improving the overall heat dissipation performance.

[0109] The inlet main branch 117 is arranged adjacent to each other, so that the cooling medium entering the inlet manifold 1151 from the main inlet 1111 can be quickly and evenly distributed to the inlet main branch 117 of each zone flow channel 116. The adjacent arrangement can also reduce the path length and resistance of the fluid in the distribution process and improve the uniformity of flow distribution.

[0110] The adjacent arrangement of the inlet branch channels 1121 allows the cooling medium to maintain a similar flow rate and pressure when flowing through each heat dissipation area, which helps to reduce local overheating or insufficient cooling caused by uneven flow rate. After heat exchange is completed, the cooling medium in each inlet branch channel 1121 is collected into the adjacent confluence branch 118. This layout simplifies the fluid merging process, reduces the generation of eddies, and improves the stability of fluid flow.

[0111] The adjacent arrangement of the return water branch channels 1122 allows the cooling medium to flow smoothly back to the outlet main branch 119, reducing the length and complexity of the return water path, reducing fluid resistance and energy loss. The adjacent arrangement of the outlet main branch 119 allows the cooling medium from each return water branch channel 1122 to be discharged quickly and in a concentrated manner, which helps to maintain the overall fluid balance and stability of the system.

[0112] Understandably, the way the components of the multiple partitioned flow channels 116 are arranged adjacent to each other can optimize the fluid flow path and help improve space utilization and thermal management efficiency.

[0113] In some embodiments, such as Figures 2-5 As shown, at least some of the partition channels 116 are provided with multiple confluence branches 118, and the confluence branches 118 of two adjacent partition channels 116 are connected.

[0114] Within the partitioned flow channel 116, the cooling medium that has completed heat exchange can be collected through multiple paths to subsequent flow channels or outlets, which helps to disperse fluid pressure, reduce the generation of eddies, and improve the stability of fluid flow.

[0115] At least some of the partitioned flow channels 116 are provided with multiple converging branches 118. In two adjacent partitioned flow channels 116, the adjacent converging branches 118 are designed to be interconnected to allow the cooling medium to merge and redistribute to a certain extent between the adjacent partitioned flow channels 116. When the heat dissipation demand of a certain partitioned flow channel 116 is high, the cooling medium in the adjacent partitioned flow channels 116 can be supplemented through the interconnected converging branches 118, thereby maintaining the thermal balance of the entire system.

[0116] It is understood that at least some of the partitioned flow channels 116 are provided with multiple confluence branches 118, and adjacent confluence branches 118 are connected in adjacent partitioned flow channels 116, which helps to optimize the flow path of the cooling medium, reduce thermal resistance and temperature difference, thereby improving heat dissipation efficiency.

[0117] The embodiments of this application are described in detail below.

[0118] In this embodiment, such as Figures 2-5 As shown, the fluid enters the inlet manifold 1151 from the main inlet 1111, and then is split in the inlet manifold 1151 to enter the adjacent first partition flow channel 116a, second partition flow channel 116b and third partition flow channel 116c.

[0119] like Figure 3 As shown, in the first partition channel 116a, the fluid from the inlet manifold 1151 enters the first inlet main branch 117a, and after being split in the first inlet guide section 113a, it enters the three adjacent inlet branch channels 1121. The fluid flowing out of the inlet branch channel 1121 near the second partition channel 116b merges with the fluid in the second partition channel 116b and enters the second manifold branch 1182. The fluids flowing out of the other two inlet branch channels 1121 merge and enter the first manifold branch. 1181, the fluid flowing out of the second confluence branch 1182 enters the outlet branch 1122 near the second partition channel 116b. The fluid flowing out of the first confluence branch 1181 is split and enters the other two adjacent outlet branches 1122. The fluid flowing through the three outlet branches 1122 merges at the first outlet guide section 114a and enters the first outlet main branch 119a. Then, it merges with the second partition channel 116b and the third partition channel 116c in the outlet manifold 1152.

[0120] like Figure 4As shown, in the second partition channel 116b, the fluid from the inlet manifold 1151 enters the second inlet main branch 117b, and after being split in the second inlet guide section 113b, it enters three adjacent inlet branch channels 1121. The fluid flowing out of the inlet branch channel 1121 closest to the first partition channel 116a merges with the fluid in the first partition channel 116a and enters the second manifold branch 1182. The fluid flowing out of the other two inlet branch channels 1121 merges with the fluid in the third partition channel 116c and enters the second manifold branch 1182. The fluid flowing out of the third confluence branch 1183 enters the outlet branch 1122 near the first partition channel 116a after being split by the third confluence branch 1183. The fluid flowing through the three outlet branches 1122 merges at the second outlet guide section 114b and enters the second outlet main branch 119b. Then, it merges with the first partition channel 116a and the third partition channel 116c in the outlet manifold 1152.

[0121] like Figure 5 As shown, in the third partition channel 116c, the fluid from the inlet manifold 1151 enters the third inlet main branch 117c, and after being split in the third inlet guide section 113c, it enters the three adjacent inlet branch channels 1121. The fluid flowing out of the inlet branch channel 1121 merges with the fluid in the second partition channel 116b and enters the third manifold branch 1183. The fluid flowing out of the third manifold branch 1183 is split and enters the three adjacent outlet branch channels 1122. The fluid flowing through the three inlet branch channels 1121 merges in the third outlet guide section 114c and enters the third outlet main branch 119c. Then, in the outlet manifold 1152, it merges with the first partition channel 116a and the second partition channel 116b.

[0122] The fluids flowing out from the adjacent first partition flow channel 116a, second partition flow channel 116b and third partition flow channel 116c merge in the outlet manifold 1152 and flow out of the main outlet 1112.

[0123] In addition, the heat exchange requirement of the first zone flow channel 116a is relatively large. The flow rate is increased by reducing the overall pressure drop of the first zone flow channel 116a. Part of the fluid in the first zone flow channel 116a and part of the fluid in the second zone flow channel 116b are merged to adjust the flow rate difference caused by the different flow paths of each zone flow channel 116 and improve the uniformity of heat exchange.

[0124] The number of inlet branch channels 1121 and outlet branch channels 1122 in the partitioned flow channel 116 is the same. The first partitioned flow channel 116a and the second partitioned flow channel 116b each have three single-sided branch channels 112, while the third partitioned flow channel 116c has four single-sided branch channels 112. These are used to reduce the flow rate of the third partitioned flow channel 116c. Additionally, two flow-disrupting blocks can be installed in the third inlet guide section 113c and the third outlet guide section 114c of the third partitioned flow channel 116c to make the flow rate distributed to the four single-sided branch channels 112 of the third partitioned flow channel 116c more uniform.

[0125] The diameters of the branch channels 112 of the first zone flow channel 116a, the second zone flow channel 116b, and the third zone flow channel 116c are set to increase sequentially, which can balance the high pressure drop problem caused by the flow channel 116 along the flow path.

[0126] This application embodiment also provides a battery 1, such as Figure 1 As shown, it includes: a battery pack 20 and a heat exchange assembly 10, the heat exchange assembly 10 being used to exchange heat for the battery pack 20.

[0127] The battery pack 20 is the core component of the battery 1. It is composed of multiple battery cells connected in series, parallel or mixed. The battery pack 20 is responsible for storing and providing electrical energy. The heat exchange component 10 is a thermal management system designed specifically for the battery pack 20 to control the temperature of the battery pack 20 during operation.

[0128] As the battery 1 is charged and discharged, a large amount of heat is generated inside the battery 1. The heat exchange component 10 absorbs and removes the heat generated by the battery pack 20 through a circulating cooling medium, such as water or ethylene glycol, so as to help the battery pack 20 operate within a suitable temperature range.

[0129] The heat exchange component 10 has a complex cooling channel design. These channels are closely attached to the surface of the battery pack 20. The cooling channels are usually made of high thermal conductivity materials to improve the heat exchange efficiency between the cooling medium and the battery pack 20. The cooling medium circulates in the cooling channel under the action of the pump. After absorbing the heat generated by the battery pack 20, the temperature of the cooling medium rises. Then, the heat is transferred to the external environment through the heat exchanger, thereby reducing the temperature of the cooling medium and realizing heat dissipation.

[0130] Understandably, the heat exchange component 10 can quickly remove the heat generated by the battery pack 20. By controlling the temperature of the battery pack 20, problems such as battery aging and capacity decay caused by high temperature can be reduced, thereby extending the service life of the battery 1.

[0131] In some embodiments, such as Figure 1 and Figure 7 As shown, battery 1 also includes: housing 30 and pipe connector 40.

[0132] The housing 30 forms a receiving cavity, in which the battery pack 20 and the heat exchange assembly 10 are installed;

[0133] The pipe joint 40 is connected to the total inlet 1111 and the total outlet 1112 of the heat exchange assembly 10, and is a metal pipe. The pipe joint 40 passes through the front beam 310 of the housing 30.

[0134] The housing 30 is the main structural part of the battery 1, mainly forming a closed containment cavity for installing and protecting the battery pack 20 and the heat exchange assembly 10. The housing 30 is usually made of a robust and corrosion-resistant material to improve the stability and safety of the battery 1 in various environments.

[0135] The battery pack 20 is installed in the housing cavity of the casing 30 and is the main energy source of the battery 1. The battery pack 20 is composed of multiple battery cells, which are connected in series, parallel or mixed connection to meet specific voltage and capacity requirements. The heat exchange component 10 is also installed in the housing cavity of the casing 30 for thermal management of the battery pack 20. It mainly absorbs and removes the heat generated by the battery pack 20 through circulating cooling medium, helping the battery pack 20 to operate within a suitable temperature range.

[0136] like Figure 6 As shown, the heat exchange assembly 10 includes a heat exchange plate 110 and a base plate 120. The heat exchange plate 110, which has cooling channels, is in close contact with the surface of the battery pack 20 to maximize heat exchange efficiency. The pipe joint 40 is a key component that connects the heat exchange assembly 10 to an external cooling system or heat exchanger. The pipe joint 40 is connected to the total inlet 1111 and the total outlet 1112 of the heat exchange assembly 10, respectively, so that the cooling medium can circulate within the heat exchange assembly 10 and achieve heat exchange with the external system.

[0137] The pipe fitting 40 is made of metal to improve its strength and corrosion resistance. The pipe fitting 40 passes through the front beam 310 of the housing 30 to facilitate the connection and maintenance of the cooling system.

[0138] As shown in the figure, the pipe joint 40 includes: a brazed column 410, a transition round pipe 420, and a sealing mounting block 430. The brazed column 410 is integrally brazed with the heat exchange plate 110. Its small volume of heat absorption can meet the temperature uniformity requirements of the heat exchange plate 110 during brazing and improve the overall welding quality. In addition, the transition round pipe 420 can be connected to the brazed column 410 and the sealing mounting block 430 respectively by flame welding or high frequency welding. Finally, the mounting block is installed on the front beam 310 of the housing 30 through a threaded connector 440, and a sealing ring 450 is placed in the middle to ensure the airtightness of the entire package.

[0139] It is understandable that by integrating components such as the housing 30, battery pack 20, heat exchange assembly 10, and pipe joint 40, a highly efficient, reliable, and easy-to-maintain battery system can be formed.

[0140] This application also provides an electrical device.

[0141] The electrical device includes a battery 1, which is used to provide electrical energy to the electrical device.

[0142] Electrical devices use an integrated battery 1 as their energy source. Electrical devices are a broad concept that can include, but are not limited to, mobile phones, tablets, laptops, electric vehicles, and ships, covering everything from simple portable electronic devices to complex home appliances and industrial equipment.

[0143] Battery 1 is one of the core components of the electrical device, responsible for converting chemical energy into electrical energy and providing a continuous and stable power supply to the device. Compared with a fixed power source, battery 1 is more portable, allowing the electrical device to work independently without an external power source.

[0144] It is understandable that the electrical device uses an integrated battery 1 as an energy source to drive its internal working mechanism or perform a specific function.

[0145] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0146] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0147] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0148] In the description of this application, "multiple" means two or more.

[0149] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0150] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0151] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0152] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange component, characterized in that, Includes a heat exchange plate, the heat exchange plate having: a main inlet, a main outlet and a plurality of branch channels connecting the main inlet and the main outlet, wherein the inlet end of the branch channel is connected to the main inlet through an inlet guide section, and the flow cross-sectional area of ​​the inlet guide section first decreases and then expands along the medium flow direction; The angle between each of the branch channels and the corresponding inlet guide section is negatively correlated with the channel distance from the branch channel to the main inlet.

2. The heat exchange assembly according to claim 1, characterized in that, The outlet end of the branch channel is connected to the main outlet through an outlet guide section, and the flow cross-sectional area of ​​the outlet guide section first decreases and then expands along the medium flow direction.

3. The heat exchange assembly according to claim 2, characterized in that, The angle between each of the branch channels and the corresponding outlet guide section is negatively correlated with the channel distance from the branch channel to the total outlet.

4. The heat exchange assembly according to any one of claims 1-3, characterized in that, The heat exchange plate is provided with an inlet manifold, an outlet manifold, and multiple partitioned flow channels. Each partitioned flow channel includes multiple branch channels. Each partitioned flow channel is connected between the main inlet and the main outlet. The inlet manifold is connected between the main inlet and each partitioned flow channel. The outlet manifold is connected between the main outlet and each partitioned flow channel.

5. The heat exchange assembly according to claim 4, characterized in that, The multiple partitioned flow channels are arranged sequentially around each other.

6. The heat exchange assembly according to claim 5, characterized in that, The tributary includes an inlet tributary and a return tributary; the zoned channel includes a main inlet branch, multiple inlet tributaries, a confluence branch, multiple return tributaries, and a main outlet branch connected in sequence. The inlet end of the main inlet branch is connected to the main inlet through the inlet manifold, and the outlet end of the main outlet branch is connected to the main outlet through the outlet manifold.

7. The heat exchange assembly according to claim 6, characterized in that, The inlet main branches of the multiple zoned flow channels are arranged adjacent to each other, the inlet branch channels of the multiple zoned flow channels are arranged adjacent to each other, the confluence branch channels of the multiple zoned flow channels are arranged adjacent to each other, the return branch channels of the multiple zoned flow channels are arranged adjacent to each other, and the outlet main branches of the multiple zoned flow channels are arranged adjacent to each other.

8. The heat exchange assembly according to claim 6, characterized in that, At least some of the partitioned flow channels are provided with multiple confluence branches, and the confluence branches of adjacent partitioned flow channels are connected.

9. A battery, characterized in that, include: Battery pack; The heat exchange assembly as described in any one of claims 1-8, wherein the heat exchange assembly is used to exchange heat with the battery pack.

10. The battery according to claim 9, characterized in that, include: The housing forms a receiving cavity, in which the battery pack and the heat exchange assembly are installed; The pipe joint is connected to the total inlet and total outlet of the heat exchange assembly and is made of metal. The pipe joint passes through the front beam of the housing.

11. An electrical appliance, characterized in that, include: The battery as claimed in claim 9 or 10 is used to provide electrical energy to the electrical device.

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