Heat exchange components, battery packs and electrical devices
By using a double-layer heat exchange plate structure and a connected flow channel design, the problem of poor heat exchange efficiency of individual battery cells and components in the power battery pack is solved, achieving efficient thermal management, avoiding pipeline leakage and space waste, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-17
Smart Images
Figure CN119725869B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery technology, and in particular to a heat exchange component, a battery pack, and an electrical device. Background Technology
[0002] Currently, the requirements for charging rates of power batteries are becoming increasingly stringent, demanding high-rate charging capabilities to achieve faster charging speeds. However, the temperature rise of individual battery cells and other components under high-rate charging and discharging conditions is also receiving increasing attention.
[0003] As an essential and critical component of the battery pack, the BDU (Battery Disconnect Unit) connects various electrical components in series and parallel via busbars. Fast charging places higher demands on the current-carrying capacity of the busbars. To ensure the busbars can carry current at high charging and discharging rates, the current-carrying cross-sectional area of the busbars needs to be increased, which inevitably leads to thickening or widening of the busbars. At the same time, the busbars also experience temperature rise under high-rate charging and high-power discharging conditions. Therefore, how to solve the heat transfer problem of battery cells and their components in existing power battery packs is a technical problem that needs to be solved in the battery field. Summary of the Invention
[0004] The purpose of this invention is to provide a heat exchange component, a battery pack, and an electrical device to solve the technical problem of poor heat exchange efficiency of individual battery cells and components in the battery pack in the prior art.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] In a first aspect, this application provides a heat exchange assembly, comprising: a first heat exchange plate and a second heat exchange plate, wherein the interior of the first heat exchange plate is provided with a first flow channel and a second flow channel along a first direction to allow the flow of heat exchange medium, wherein the first flow channel is provided with an outlet and the second flow channel is provided with an inlet, the first flow channel and the second flow channel are isolated from each other, and the area of the first heat exchange plate with the first flow channel is used for heat exchange with a first object to be cooled; the first direction is the thickness direction of the first heat exchange plate; the second heat exchange plate is connected to the first heat exchange plate and is located on the same horizontal plane as the first heat exchange plate, the second heat exchange plate is used for heat exchange with a second object to be cooled, the temperature of the first object to be cooled is higher than the temperature of the second object to be cooled, and the interior of the second heat exchange plate is provided with a third flow channel to allow the flow of heat exchange medium, wherein the third flow channel is connected to the first flow channel and the second flow channel respectively, so as to allow the heat exchange medium to flow from the inlet of the second flow channel through the third flow channel to the outlet of the first flow channel.
[0007] In one or more embodiments of this application, the area of the first heat exchange plate having a first flow channel contacts the side of the first object to be cooled, so as to exchange heat with the first object to be cooled; the area of the second heat exchange plate having a third flow channel contacts the side of the second object to be cooled, so as to exchange heat with the second object to be cooled.
[0008] In one or more embodiments of this application, an isolation cavity is provided along a first direction inside the first heat exchange plate and between the first flow channel and the second flow channel, the isolation cavity being used to isolate the first flow channel and the second flow channel.
[0009] In one or more embodiments of this application, the isolation cavity contains a heat insulation element.
[0010] In one or more embodiments of this application, the first heat exchange plate is provided with at least one first flow branch port on the side of the second flow channel facing the third flow channel, and the second heat exchange plate is provided with a second flow branch port that communicates with the first flow branch port, so that the second flow channel and the third flow channel are connected.
[0011] The first heat exchange plate has a first reflux port on the side of the first flow channel facing the third flow channel, and the second heat exchange plate has a second reflux port connected to the first reflux port, so that the third flow channel is connected to the first flow channel.
[0012] In one or more embodiments of this application, a heat-conducting element is provided between the contact surface of the first heat exchange plate and the first object to be cooled.
[0013] Secondly, this application also provides a battery pack, comprising:
[0014] BDU module;
[0015] Battery module; and,
[0016] The heat exchange assembly according to any one of the first aspects, wherein the area of the first heat exchange plate of the heat exchange assembly having a first flow channel is supported below the BDU module for heat exchange with the BDU module, and the area of the second heat exchange plate of the heat exchange assembly having a third flow channel is supported below the battery module for heat exchange with the battery module.
[0017] In one or more embodiments of this application, the battery pack further includes a housing having a receiving cavity for accommodating the battery module;
[0018] The first heat exchange plate also includes a bracket, which surrounds the BDU module and is disposed on the surface of the first heat exchange plate near the first flow channel along the first direction. The bracket is connected to the housing.
[0019] The bracket is equipped with high-voltage and low-voltage connectors, which are connected to the BDU module respectively.
[0020] In one or more embodiments of this application, the BDU module includes a housing and a protective device disposed inside the housing, and the area of the first heat exchange plate having a first flow channel is supported on the bottom of the housing;
[0021] The housing has a heat dissipation through hole on the contact surface with the first heat exchange plate. The protection device includes a busbar, and a heat dissipation part is connected to the busbar in the direction of the heat dissipation through hole. The heat dissipation through hole is used to accommodate the heat dissipation part and make the heat dissipation part contact the first heat exchange plate for heat exchange.
[0022] Thirdly, this application also provides an electrical device including the battery pack described in any of the second aspects.
[0023] Based on the above technical solution, the heat exchange component, battery pack, and power device of this application have at least the following beneficial technical effects:
[0024] The heat exchange assembly provided in this application consists of a first heat exchange plate and a second heat exchange plate that are connected to each other. The first heat exchange plate is used for heat exchange with a first heat-dissipating object with a higher temperature, and the second heat exchange plate is used for heat exchange with a second heat-dissipating object with a lower temperature. The first heat exchange plate has a first flow channel and a second flow channel that allow the heat exchange medium to flow. The first flow channel and the second flow channel are isolated to avoid mutual interference between the internal heat exchange mediums. The second heat exchange plate has a third flow channel. By allowing the heat exchange medium to flow from the inlet of the second flow channel through the third flow channel to the outlet of the first flow channel, the heat exchange medium can first exchange heat with the second heat-dissipating object with a lower temperature and then with the first heat-dissipating object with a higher temperature. This avoids the influence of the first heat-dissipating object with a higher temperature on the second heat-dissipating object with a lower temperature, meets the requirement of simultaneous heat exchange for multiple components with large temperature differences, improves the heat exchange capacity, and the first and second heat exchange plates share a heat exchange system, avoiding the risk of pipeline leakage.
[0025] The battery pack provided in this application includes a BDU module, a battery module, and the aforementioned heat exchange assembly. The first heat exchange plate of the heat exchange assembly, with a first flow channel, is supported below the BDU module for heat exchange. The second heat exchange plate of the heat exchange assembly, with a third flow channel, is supported below the battery module for heat exchange. This allows the heat exchange medium to first exchange heat with the relatively lower-temperature battery module, and then with the higher-temperature BDU module, preventing the heat generated by the BDU module from affecting the temperature of the battery module. Furthermore, the first and second heat exchange plates can share a single heat exchange system, avoiding the risk of pipeline leaks, improving heat exchange capacity, and reducing costs. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a three-dimensional structural diagram of the heat exchange component provided in this application.
[0028] Figure 2 This is a structural schematic diagram of the first heat exchange plate provided in this application from the top view.
[0029] Figure 3 This is a structural schematic diagram of the first heat exchange plate provided in this application from the bottom view.
[0030] Figure 4 This is a schematic diagram of the structure of the second heat exchange plate provided in this application.
[0031] Figure 5 This is a side view of the heat exchange assembly provided in this application.
[0032] Figure 6 yes Figure 5 AA section view.
[0033] Figure 7 This is a structural schematic diagram of the battery pack (with the cover removed) provided in this application.
[0034] Figure 8 This is a schematic diagram of the structure of the BDU module provided in this application.
[0035] Figure 9 This is a schematic diagram of the protection device of the BDU module provided in this application.
[0036] Figure 10 This is a structural schematic diagram of the first heat exchange plate and BDU module provided in this application.
[0037] Figure 11 This is a structural schematic diagram of the heat exchange assembly, BDU module, and enclosure provided in this application.
[0038] In the diagram: 10-First heat exchange plate; 20-Second heat exchange plate; 30-BDU module; 40-Battery module; 50-Housing housing; 60-High-pressure connector; 70-Low-pressure connector; 80-Seal; 101-Outlet; 102-Inlet; 103-First flow channel; 104-Second flow channel; 105-First reflux port; 106-Isolation chamber; 107-Insulation component; 108-First branch port; 109-Bracket; 201-Third flow channel; 202-Second reflux port; 203-Second branch port; 301-Housing shell; 302-Heat dissipation hole; 303-Heat dissipation unit; 304-Protective device; 305-Bus. Detailed Implementation
[0039] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0041] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.
[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0043] In related technologies, the temperature rise issue of power batteries under high-rate charging and discharging conditions (above 4C) is receiving increasing attention. The BDU (Battery Disconnect Unit), as an essential and critical component of the battery pack, connects various internal electrical components in series and parallel via busbars (copper or aluminum). Fast charging conditions place higher demands on the current-carrying capacity of these busbars. To ensure sufficient current flow during high-rate charging and discharging, the cross-sectional area of the busbar needs to be increased, inevitably requiring a thicker or wider busbar. Under high-rate charging and high-power discharging conditions, the busbar also experiences temperature rise. In related technologies, thermal management typically involves installing a separate cold plate on the BDU. However, this separate cold plate increases the risk of pipeline leaks and requires significant space.
[0044] Based on the above considerations, in order to solve the technical problem of poor heat exchange efficiency of battery cells and components in the existing battery pack, this application provides a heat exchange assembly, including a first heat exchange plate and a second heat exchange plate. The interior of the first heat exchange plate is provided with a first flow channel and a second flow channel along a first direction to allow the flow of heat exchange medium. The first flow channel has an outlet, and the second flow channel has an inlet. The first flow channel and the second flow channel are isolated from each other. The area of the first heat exchange plate with the first flow channel is used for heat exchange with a first object to be cooled. The second heat exchange plate is connected to the first heat exchange plate and is located on the same horizontal plane as the first heat exchange plate. The second heat exchange plate is used for heat exchange with a second object to be cooled. The temperature of the first object to be cooled is higher than the temperature of the second object to be cooled. The interior of the second heat exchange plate is provided with a third flow channel to allow the flow of heat exchange medium. The third flow channel is connected to both the first and second flow channels to allow the heat exchange medium to flow from the inlet of the second flow channel through the third flow channel to the outlet of the first flow channel.
[0045] In the technical solution of this application, the heat exchange assembly is provided with a first heat exchange plate and a second heat exchange plate that are connected to each other. The first heat exchange plate is used to exchange heat with a first heat-dissipating object with a higher temperature, and the second heat exchange plate is used to exchange heat with a second heat-dissipating object with a lower temperature. The first heat exchange plate is provided with a first flow channel and a second flow channel that allow the heat exchange medium to flow. The first flow channel and the second flow channel are isolated to avoid mutual interference between the internal heat exchange mediums. The second heat exchange plate is provided with a third flow channel. By allowing the heat exchange medium to flow from the inlet of the second flow channel through the third flow channel to the outlet of the first flow channel, the heat exchange medium can first exchange heat with the second heat-dissipating object with a lower temperature and then exchange heat with the first heat-dissipating object with a higher temperature. This avoids the influence of the first heat-dissipating object with a higher temperature on the second heat-dissipating object with a lower temperature, meets the requirement of simultaneous heat exchange for multiple components with large temperature differences, improves the heat exchange capacity, and the first heat exchange plate and the second heat exchange plate share a heat exchange system, avoiding the risk of pipeline leakage.
[0046] The technical solution of this application will now be described in detail with reference to the accompanying drawings.
[0047] Please refer to the above as well. Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a heat exchange assembly, including: a first heat exchange plate 10 and a second heat exchange plate 20. The interior of the first heat exchange plate 10 is provided with a first flow channel 103 and a second flow channel 104 along a first direction Z, allowing the flow of heat exchange medium. The first flow channel 103 is provided with an outlet 101, and the second flow channel 104 is provided with an inlet 102. The first flow channel 103 and the second flow channel 104 are isolated from each other. The area of the first heat exchange plate 10 with the first flow channel 103 is used for heat exchange with a first heat-dissipating object. The second heat exchange plate 20 is connected to the first heat exchange medium. A heat exchange plate 10 is connected to and located on the same horizontal plane as the first heat exchange plate 10. The second heat exchange plate 20 is used to exchange heat with the second heat-dissipating object. The temperature of the first heat-dissipating object is higher than that of the second heat-dissipating object. The interior of the second heat exchange plate 20 is provided with a third flow channel 201 that allows the heat exchange medium to flow. The third flow channel 201 is connected to the first flow channel 103 and the second flow channel 104 respectively, so as to allow the heat exchange medium to flow from the liquid inlet 102 of the second flow channel 104 through the third flow channel 201 to the liquid outlet 101 of the first flow channel 103.
[0048] Wherein, the first direction Z can be the thickness direction of the first heat exchange plate 10. In some embodiments, the first object to be cooled can be a BDU module, and the second object to be cooled can be a battery module.
[0049] In the technical solution of this application embodiment, a first heat exchange plate 10 and a second heat exchange plate 20 are connected. The first heat exchange plate 10 is used for heat exchange with a first heat-dissipating object with a higher temperature, and the second heat exchange plate 20 is used for heat exchange with a second heat-dissipating object with a lower temperature. The first heat exchange plate 10 is provided with a first flow channel 103 and a second flow channel 104 that allow the heat exchange medium to flow. The first flow channel 103 and the second flow channel 104 are isolated to avoid mutual interference between the internal heat exchange media. The second heat exchange plate 20 is provided with a third flow channel 201, which allows the heat exchange medium to flow through a third flow channel 201. The liquid flows from the inlet 102 of the second flow channel 104 through the third flow channel 201 to the outlet 101 of the first flow channel 103. This allows the heat exchange medium to exchange heat with the second heat-dissipating object at a lower temperature first, and then with the first heat-dissipating object at a higher temperature. This avoids the influence of the first heat-dissipating object at a higher temperature on the second heat-dissipating object at a lower temperature, meets the requirement of simultaneous heat exchange for multiple components with large temperature differences, and improves the heat exchange capacity. Furthermore, the first heat exchange plate 10 and the second heat exchange plate 20 share a heat exchange system, avoiding the risk of pipeline leakage.
[0050] The first heat exchange plate 10 and the second heat exchange plate 20 are located on the same plane, so that the first heat exchange plate 10 and the second heat exchange plate 20 can be assembled and installed as a whole at the bottom of the first and second objects to be scald at the same height.
[0051] In some embodiments, the first heat exchange plate 10 and the second heat exchange plate 20 may be made of Al material, generally 3-series aluminum or 6-series aluminum, and the manufacturing process may be stamping followed by brazing or aluminum extrusion profile flow channel plate.
[0052] In some embodiments, the area of the first heat exchange plate 10 with the first flow channel 103 contacts the side of the first object to be scald, so as to exchange heat with the first object to be scald; the area of the second heat exchange plate 20 with the third flow channel 201 contacts the side of the second object to be scald, so as to exchange heat with the second object to be scald.
[0053] In order to improve the heat exchange efficiency of the first object to be cooled, the area of the first flow channel 103 covers the contact surface between the first object to be cooled and the first heat exchange plate 10. In some embodiments, please refer to Figure 2 The first flow channel 103 can be arranged in a roundabout manner to increase the heat exchange efficiency between the heat exchange medium and the first heat-dissipating object. Similarly, to improve the heat exchange efficiency of the second heat-dissipating object, the area of the third flow channel 201 covers the contact surface between the second heat-dissipating object and the second heat exchange plate 20. In some embodiments, please refer to... Figure 4 and Figure 6 The third flow channel 201 can be arranged in a roundabout way to increase the heat exchange efficiency between the heat exchange medium and the second heat-dissipating object.
[0054] In the technical solution of this application embodiment, the above-mentioned arrangement enables the first heat exchange plate 10 and the second heat exchange plate 20 to simultaneously exchange heat on the first heat-dissipating object and the second heat-dissipating object with a large temperature difference, thereby improving heat dissipation efficiency and heat exchange capacity.
[0055] Please refer to Figure 2 and Figure 3 In some embodiments, an isolation cavity 106 is provided inside the first heat exchange plate 10 along the first direction Z and between the first flow channel 103 and the second flow channel 104. The isolation cavity 106 is used to isolate the first flow channel 103 and the second flow channel 104 from each other.
[0056] The isolation cavity 106 can be a cavity structure recessed inside the first heat exchange plate 10. The length of the isolation cavity 106 is greater than the length of the first flow channel 103 and the second flow channel 104, and the width of the isolation cavity 106 is greater than the width of the first flow channel 103 and the second flow channel 104. The length of the first flow channel 103 and the second flow channel 104 can be understood as the total length of the area formed by the first flow channel 103 or the second flow channel 104 on the surface of the first heat exchange plate 10, and the width of the first flow channel 103 and the second flow channel 104 can be understood as the total width of the area formed by the first flow channel 103 or the second flow channel 104 on the surface of the first heat exchange plate 10.
[0057] In the technical solution of this application embodiment, the above-mentioned arrangement allows the isolation cavity 106 to isolate the heat exchange medium in the first flow channel 103 and the second flow channel 104, thereby preventing the heat exchange medium with a higher temperature in the first flow channel 103 from affecting the heat exchange medium with a lower temperature in the second flow channel 104, and thus reducing the heat exchange effect on the second object to be dissipated.
[0058] Please refer to Figure 2 In some embodiments, the isolation cavity 106 contains a thermal insulation element 107. In some embodiments, the thermal insulation element 107 may be thermal insulation foam or a low thermal conductivity adhesive, the thermal conductivity of which is generally less than 0.1 W / (m*k), such as a polyurethane foam thermally conductive adhesive, the higher the foaming ratio, the lower the thermal conductivity.
[0059] In the technical solution of this application embodiment, by filling the isolation cavity 106 with a heat insulation member 107, the thermal resistance in the first flow channel 103 and the second flow channel 104 is increased, the heat exchange is reduced, thereby isolating the high temperature heat exchange medium of the outlet 101 from the temperature of the heat exchange medium of the inlet 102; avoiding raising the inlet temperature of the second heat-dissipating object, such as the battery module, and reducing the heat exchange with the second heat-dissipating object, such as the battery cell.
[0060] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In some embodiments, the first heat exchange plate 10 is provided with at least one first branch port 108 on the side of the second flow channel 104 facing the third flow channel 201, and the second heat exchange plate 20 is provided with a second branch port 203 communicating with the first branch port 108, so that the second flow channel 104 and the third flow channel 201 are connected; the first heat exchange plate 10 is provided with a first return port 105 on the side of the first flow channel 103 facing the third flow channel 201, and the second heat exchange plate 20 is provided with a second return port 202 communicating with the first return port 105, so that the third flow channel 201 is connected with the first flow channel 103.
[0061] Among them, such as Figure 4 As shown, the second branch port 203 is located near the bottom surface of the third flow channel 201. The second return port 202 is located near the top surface of the third flow channel 201. During installation, the first branch port 108 can be aligned with the second branch port 203, and the second return port 202 can be aligned with the first return port 105 to assemble the first heat exchange plate 10 and the second heat exchange plate 20 together.
[0062] In the technical solution of this application embodiment, through the above-mentioned arrangement, the heat exchange medium can enter the second flow channel 104 from the liquid inlet 102, enter the third flow channel 201 through the first branch port 108 of the second flow channel 104 and the second branch port 203 of the third flow channel 201, and exchange heat with the second heat-dissipating object. Then, it enters the first flow channel 103 through the second return port 202 and the first return port 105 of the first flow channel 103, and exchanges heat with the first heat-dissipating object, thereby improving the heat exchange capacity.
[0063] In some embodiments, a thermally conductive element is provided between the contact surface of the first heat exchange plate 10 and the first object to be cooled. The thermally conductive element can be a thermally conductive insulating medium to exchange heat with the first object to be cooled, such as a BDU, while ensuring electrical safety, and to cool the BDU during normal use; wherein, the thermally conductive insulating medium is generally a thermally conductive pad, thermally conductive silicone, or thermally conductive structural adhesive; the thermal conductivity is generally ≥0.5W / (m*k), and conventional material types include silicone, polyurethane, epoxy, etc.
[0064] Please refer to Figure 7 On the other hand, this application also provides a battery pack, including: a BDU module 30, a battery module 40, and a heat exchange assembly of any of the above, wherein the area of the first heat exchange plate 10 of the heat exchange assembly having a first flow channel 103 is supported below the BDU module 30 for heat exchange with the BDU module 30, and the area of the second heat exchange plate 20 of the heat exchange assembly having a third flow channel 201 is supported below the battery module 40 for heat exchange with the battery module 40.
[0065] The battery packs in this application are used in various battery-powered devices, referring to physical modules that include one or more battery modules to provide higher voltage and capacity.
[0066] In the technical solution of this application embodiment, the heat exchange medium can first exchange heat with the relatively low-temperature battery module 40, and then with the high-temperature BDU module 30. This avoids the heat generated by the BDU module 30 affecting the temperature of the battery module 40. Furthermore, the first heat exchange plate 10 and the second heat exchange plate 20 can share a single heat exchange system, avoiding the risk of pipeline leakage, improving heat exchange capacity, and reducing costs. Since the temperature requirements of the BDU module 30 and the battery module 40 in the battery pack are different; the temperature range of the busbar in the BDU module 30 is generally required to be ≤130-150℃; the operating temperature range of the individual battery cells in the battery module 40 is generally required to be ≤55-60℃; the water temperature at the inlet 102 is generally ≤25℃, and the water temperature after heat exchange with the battery module 40 is generally ≤35℃; therefore, the temperature of the heat exchange medium entering the first flow channel 103 can also effectively exchange heat with the BDU module 30, thereby improving the heat exchange capacity.
[0067] Please refer to Figure 7 and Figure 11 The battery pack also includes a housing 50 having a receiving cavity for accommodating the battery module 40, such that the battery module 40 is mounted into the receiving cavity of the housing 50. The battery module 40 includes multiple stacked battery cells.
[0068] Please refer to Figure 10 The first heat exchange plate 10 also includes a bracket 109, which surrounds the BDU module 30 and is disposed on the surface of the first heat exchange plate 10 near the first flow channel 103 along the first direction Z. The bracket 109 is connected to the housing 50. This allows the BDU module 30, the first heat exchange plate 10, and the housing 50 of the battery pack to be fixed by the bracket 109, ensuring that the BDU module 30, the first heat exchange plate 10, the second heat exchange plate 20, and the battery module 40 are integrated into one unit.
[0069] In some embodiments, the bracket 109 is provided with a high-voltage plug-in 60 and a low-voltage plug-in 70, which are respectively connected to the BDU module 30.
[0070] In the technical solution of this application embodiment, the high-pressure plug-in 60 and the low-pressure plug-in 70 are integrated with the BDU module 30 into one module, which is then combined with the housing 50 as a standard liquid-cooled BDU module.
[0071] Please refer to Figure 8 , Figure 9 and Figure 10 In some embodiments, the BDU module 30 includes a housing 301 and a protective device 304 disposed inside the housing 301, and the area of the first heat exchange plate 10 having a first flow channel 103 is supported on the bottom of the housing 301. Please refer to Figure 8 and Figure 9The housing 301 has a heat dissipation through hole 302 on its contact surface with the first heat exchange plate 10. The protection device 304 includes a busbar 305, and a heat dissipation part 303 is connected to the busbar 305 in the direction of the heat dissipation through hole 302. The heat dissipation through hole 302 is used to accommodate the heat dissipation part 303 and to make contact between the heat dissipation part 303 and the first heat exchange plate 10 for heat exchange. The protection device 304 also includes a relay, a fuse, a shunt, etc.
[0072] The heat dissipation through hole 302 can be a through hole reserved at the bottom of the housing 301. Its function is to allow the heat dissipation part 303 of the busbar 305 to be exposed through the heat dissipation through hole 302 and to directly contact the heat exchange surface of the first heat exchange plate 10.
[0073] In the technical solution of this application embodiment, the heat exchange between the heat dissipation part 303 of the busbar 305 and the first heat exchange plate 10 can quickly remove the heat of the busbar 305 through the heat exchange medium in the first heat exchange plate 10, thereby rapidly reducing the temperature of the busbar. On the other hand, the first heat exchange plate 10 also contacts the housing 301 for heat exchange. The housing 301 can be made of plastic materials such as PBT, PP, and ABS, or it can be made of plastic material with high thermal conductivity, thereby increasing the heat exchange capacity.
[0074] In some embodiments, the battery pack further includes a top cover, and a sealing element 80 is provided on the upper edge of the housing 50 and the upper edge of the casing 301. The sealing element 80 can be an integral structure, and the sealing element 80 can be a sealing ring. The top cover is sealed to the housing 50 and the casing 301 through the sealing element 80. The top cover can also be an integral structure that covers the battery module 40 and the BDU module 30 together.
[0075] On the other hand, this application also provides an electrical device, including the aforementioned battery pack. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.
[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A heat exchange component, characterized in that, include: A first heat exchange plate (10) has a first flow channel (103) and a second flow channel (104) inside it along a first direction (Z) to allow the flow of heat exchange medium. The first flow channel (103) has a liquid outlet (101), and the second flow channel (104) has a liquid inlet (102). Along the first direction (Z), an isolation cavity (106) is provided inside the first heat exchange plate (10) and between the first flow channel (103) and the second flow channel (104). The isolation cavity (106) is used to isolate the first flow channel (103) and the second flow channel (104) from each other. The isolation cavity (106) contains a heat insulation element (107). The area of the first heat exchange plate (10) with the first flow channel (103) is used for heat exchange with the first heat-dissipating object. The first direction (Z) is the thickness direction of the first heat exchange plate (10). The second heat exchange plate (20) is connected to the first heat exchange plate (10) and is located on the same horizontal plane as the first heat exchange plate (10). The second heat exchange plate (20) is used to exchange heat with the second heat-dissipating object. The temperature of the first heat-dissipating object is higher than that of the second heat-dissipating object. The interior of the second heat exchange plate (20) is provided with a third flow channel (201) that allows the heat exchange medium to flow. The third flow channel (201) is connected to the first flow channel (103) and the second flow channel (104) respectively. The heat exchange medium is only allowed to flow from the inlet (102) of the second flow channel (104) through the third flow channel (201) to the outlet (101) of the first flow channel (103).
2. The heat exchange assembly according to claim 1, characterized in that, The area of the first heat exchange plate (10) with the first flow channel (103) contacts the side of the first object to be cooled, so as to exchange heat with the first object to be cooled; The area of the second heat exchange plate (20) with the third flow channel (201) contacts the side of the second object to be cooled, so as to exchange heat with the second object to be cooled.
3. The heat exchange assembly according to claim 1, characterized in that, The first heat exchange plate (10) has at least one first branch port (108) on the side of the second flow channel (104) facing the third flow channel (201), and the second heat exchange plate (20) has a second branch port (203) connected to the first branch port (108) so that the second flow channel (104) and the third flow channel (201) are connected. The first heat exchange plate (10) has a first reflux port (105) on the side of the first flow channel (103) facing the third flow channel (201), and the second heat exchange plate (20) has a second reflux port (202) connected to the first reflux port (105) so that the third flow channel (201) is connected to the first flow channel (103).
4. The heat exchange assembly according to claim 1, characterized in that, A heat-conducting element is provided between the contact surface of the first heat exchange plate (10) and the first object to be cooled.
5. A battery pack, characterized in that, include: BDU module (30); Battery module (40); and, The heat exchange assembly according to any one of claims 1 to 4, wherein the area of the first heat exchange plate (10) of the heat exchange assembly having a first flow channel (103) is supported below the BDU module (30) for heat exchange with the BDU module (30), and the area of the second heat exchange plate (20) of the heat exchange assembly having a third flow channel (201) is supported below the battery module (40) for heat exchange with the battery module (40).
6. The battery pack according to claim 5, characterized in that, The battery pack also includes a housing (50) having a receiving cavity for accommodating the battery module (40); The first heat exchange plate (10) further includes a bracket (109), which surrounds the BDU module (30) and is disposed on the surface of the first heat exchange plate (10) near the first flow channel (103) along the first direction (Z). The bracket (109) is connected to the housing (50). The bracket (109) is provided with a high-voltage plug-in (60) and a low-voltage plug-in (70), which are respectively connected to the BDU module (30).
7. The battery pack according to claim 5, characterized in that, The BDU module (30) includes a housing (301) and a protective device (304) disposed inside the housing (301). The area of the first heat exchange plate (10) with the first flow channel (103) is supported at the bottom of the housing (301). The housing (301) has a heat dissipation through hole (302) on the contact surface with the first heat exchange plate (10). The protection device (304) includes a busbar (305), and the busbar (305) is connected to a heat dissipation part (303) in the direction of the heat dissipation through hole (302). The heat dissipation through hole (302) is used to accommodate the heat dissipation part (303) and to make the heat dissipation part (303) contact the first heat exchange plate (10) for heat exchange.
8. An electrical device, characterized in that, include: The battery pack according to any one of claims 5 to 7.