Thermal management assembly of battery, battery and electric device

Abstract

The utility model provides a heat management assembly of a battery, the battery and a power utilization device, in the heat management assembly of the battery, a current collector comprises a wall part and a joint which are connected with each other, the wall part encloses a current collecting cavity with an opening, the joint is located on one side of the wall part in a first direction and is provided with a communication hole communicated with the current collecting cavity, and the wall part is provided with a plurality of through holes communicated with the current collecting cavity. The plurality of heat exchange components are respectively connected to the openings of the plurality of current collectors, each heat exchange component is provided with a heat exchange runner communicated with the current collecting cavity, at least part of the joint is inserted into the connecting pipe and is fixed on the connecting pipe, and the sealing piece is clamped between the connecting pipe and the joint. As the sealing element is clamped between the connecting pipe and the joint, and the sealing element can seal the gap between the connecting pipe and the joint, the joint can be well sealed with the connecting pipe under the condition that secondary machining is not carried out, the number of machining procedures of the current collector is reduced, the manufacturing cost is reduced, and the service life of the current collector is prolonged. Therefore, the cost of the thermal management assembly of the battery is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange of batteries, and in particular to a thermal management component of a battery, a battery and an electrical device. Background Art

[0002] Batteries have the advantages of high specific energy and high power density. They are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric tools, etc.

[0003] Usually, when the battery is working, it will generate heat, which will increase the temperature of the battery and the surrounding environment. In order to make the battery work stably, a thermal management component is usually set in the battery. Reducing the cost of thermal management components is increasingly becoming an important way for those skilled in the art to reduce battery costs. Utility Model Content

[0004] In view of the above problems, the present application provides a thermal management component of a battery, a battery and an electrical device, wherein the thermal management component of the battery has a lower cost.

[0005] In the first aspect, the present application provides a thermal management component of a battery, which includes a connecting tube, a seal, a plurality of current collectors and a plurality of heat exchange components, the plurality of current collectors are arranged along a first direction, the current collectors include interconnected wall portions and joints, the wall portions form a current collecting cavity with an opening, the joint is located on one side of the wall portion in the first direction and is provided with a connecting hole connected to the current collecting cavity; a plurality of heat exchange components are respectively connected to the openings of the plurality of current collectors, the heat exchange components have a heat exchange flow channel connected to the current collecting cavity; the connecting tube is used to connect adjacent current collectors, at least a portion of the joint is inserted into the connecting tube and fixed to the connecting tube; the seal is clamped between the connecting tube and the joint.

[0006] In the above-mentioned mechanism, since a seal is sandwiched between the connecting tube and the joint, the seal can seal the gap between the connecting tube and the joint, so that the joint can be well sealed with the connecting tube without secondary machining, which is beneficial to reducing the processing steps of the current collector and reducing the manufacturing cost, thereby helping to reduce the cost of the thermal management component of the battery.

[0007] According to the thermal management assembly of the battery provided in some embodiments of the present application, the joint is provided with a positioning groove, and at least part of the sealing member is accommodated in the positioning groove. By accommodating at least part of the sealing member in the positioning groove, the sealing member can be limited by the inner wall of the positioning groove, so that during the assembly process of the thermal management assembly, the sealing member is not easy to move and be misplaced or fall off from the joint, which facilitates the assembly of the thermal management assembly.

[0008] According to the thermal management assembly of the battery provided in some embodiments of the present application, the connecting pipe includes a pipe and a step protruding from the inner wall of the pipe, and the sealing member is sandwiched between the step and the joint along the first direction. By protruding the step from the inner wall of the pipe, the step can block and resist the pipe extending along the first direction, so that the sealing member can be sandwiched between the step and the joint in the first direction, so that the sealing member can seal the gap at the connection between the joint and the connecting pipe.

[0009] According to the thermal management assembly of the battery provided in some embodiments of the present application, the pipeline includes a first wall body and a second wall body sleeved on the first wall body, and the step protrudes from the first wall body. The pipeline includes a first wall body and a second wall body stacked in a radial direction, so that the pipeline has a strong structural strength, which helps to pass the heat exchange medium into the heat exchange component at a preset pressure.

[0010] According to the thermal management component of the battery provided in some embodiments of the present application, the elastic modulus of the first wall body is smaller than the elastic modulus of the second wall body, so that the first wall body is more likely to undergo elastic deformation and the joint can be more conveniently inserted into the inner cavity of the connecting pipe. The texture of the second wall body is also harder than that of the first wall body, so that the second wall body can better maintain the shape of the connecting pipe and withstand the pressure of the heat exchange medium.

[0011] According to the thermal management assembly of the battery provided in some embodiments of the present application, the direction of the opening is arranged to intersect with the extension direction of the connecting tube, so that multiple heat exchange components can be arranged on one side of the connecting tube, which facilitates the arrangement of the thermal management assembly in the battery.

[0012] According to the thermal management assembly of the battery provided in some embodiments of the present application, the current collector is provided with two joints, the two joints are respectively connected to the two sides of the wall portion in the first direction, and the two joints are respectively connected to the connecting pipes, so that the current collector is symmetrical in shape in the first direction, so that the current collector can be formed by casting, which is convenient for the processing and manufacturing of the current collector.

[0013] According to the thermal management assembly of the battery provided in some embodiments of the present application, the current collector is an integrally formed structure, so that the wall portion and the joint can be formed simultaneously, which is not only beneficial to reducing the processing steps and improving production efficiency, but also beneficial to improving the overall structural strength of the current collector. At the same time, the current collector is formed by integral die-casting, which is also beneficial to improving the molding quality of the current collector and reducing the possibility of subsequent secondary machining of the current collector.

[0014] According to the thermal management assembly of the battery provided in some embodiments of the present application, the connecting tube is interference fit in the joint, so that the inner wall of the connecting tube can fit tightly with the outer wall of the joint, which is beneficial to improving the sealing of the connecting tube and the joint.

[0015] In a second aspect, the present application provides a battery, which includes a battery thermal management component and a plurality of battery cells provided by any of the above technical solutions, wherein the plurality of heat exchange components of the battery thermal management component are used for exchanging heat with the plurality of battery cells.

[0016] According to the battery provided in some embodiments of the present application, the battery cells are arranged between adjacent heat exchange components.

[0017] In a third aspect, the present application provides an electrical device, which includes a battery provided by any of the above technical solutions, and the battery is used to provide electrical energy.

[0018] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0019] The present application provides a thermal management component of a battery, which includes a connecting tube, a seal, a plurality of heat exchange components and a plurality of current collectors arranged along a first direction, the current collectors including mutually connected wall portions and joints, the wall portions enclosing a current collecting cavity with an opening, the joint being located on one side of the wall portion in the first direction and provided with a connecting hole communicating with the current collecting cavity, a plurality of heat exchange components being respectively connected to the openings of a plurality of current collectors, the heat exchange components having a heat exchange flow channel communicating with the current collecting cavity, at least a portion of the joint being inserted into the connecting tube and fixed to the connecting tube, and a seal being clamped between the connecting tube and the joint. In the above mechanism, since a seal is clamped between the connecting tube and the joint, the seal can seal the gap between the connecting tube and the joint, so that the joint can be well sealed with the connecting tube without secondary machining, which is beneficial to reducing the processing procedures of the current collectors and reducing the manufacturing cost, thereby helping to reduce the cost of the thermal management component of the battery.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0022] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0023] Figure 2 A disassembled diagram of a battery provided in some embodiments of the present application;

[0024] Figure 3 A disassembled diagram of a thermal management component of a battery provided in some embodiments of the present application;

[0025] Figure 4 A schematic diagram of the connection between the current collector and the heat exchange component in the thermal management assembly of the battery provided in some embodiments of the present application;

[0026] Figure 5 A schematic diagram of the structure of the connecting pipe provided in some embodiments of the present application;

[0027] Figure 6 A cross-sectional view of a connecting pipe provided in some embodiments of the present application;

[0028] Figure 7 A left side view of a thermal management assembly of a battery provided in some embodiments of the present application;

[0029] Figure 8 A rear view of a current collector provided in some embodiments of the present application;

[0030] Fig. 9 for Figure 7 Sectional view at AA in the middle;

[0031] Fig.10 A schematic diagram of a portion of the structure of a battery provided in some embodiments of the present application.

[0032] In the attached picture:

[0033] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor; 5. Box; 51. First box; 52. Second box; 53. Accommodating space; 6. Current collector; 61. Wall; 611. Current collecting cavity; 612. Opening; 62. Joint; 621. Positioning groove; 7. Heat exchange component; 71. Heat exchange channel; 8. Connecting pipe; 81. Pipe; 811. First wall; 812. Second wall; 82. Step; 9. Seal; 10. Battery cell; X, first direction. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0035] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0036] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0037] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0041] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0042] The battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0043] The battery cells may be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0044] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery.

[0045] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0046] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0047] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0048] Batteries usually generate heat when working, causing the temperature of the battery and the surrounding environment to rise. Thermal management components are usually set in the battery to exchange heat with the battery to control the temperature. In order to meet the requirements of output voltage, power and other factors, the battery is usually equipped with a large number of battery cells. The thermal management components that exchange heat with them have a complex structure. In addition, the sealing requirements make the manufacture of thermal management components of batteries more difficult and costly.

[0049] In order to reduce the cost of the thermal management component of the battery, some embodiments of the present application provide a thermal management component of the battery, a battery and an electrical device, wherein the thermal management component of the battery includes a connecting pipe, a sealing member, a plurality of heat exchange components and a plurality of current collectors arranged along a first direction, the current collectors include mutually connected walls and joints, the walls enclose a current collecting cavity with an opening, the joint is located on one side of the wall in the first direction and is provided with a connecting hole connected to the current collecting cavity, the plurality of heat exchange components are respectively connected to the openings of the plurality of current collectors, the heat exchange components have a heat exchange flow channel connected to the current collecting cavity, at least a portion of the joint is inserted into the connecting pipe and fixed to the connecting pipe, and the sealing member is clamped between the connecting pipe and the joint. In the above mechanism, since a sealing member is clamped between the connecting pipe and the joint, the sealing member can seal the gap between the connecting pipe and the joint, so that the joint can be well sealed with the connecting pipe without secondary machining, which is conducive to reducing the processing procedures of the current collector and reducing the manufacturing cost, thereby helping to reduce the cost of the thermal management component of the battery.

[0050] The thermal management assembly described in the embodiments of the present application is suitable for batteries and electrical devices using batteries.

[0051] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The electrical device provided in the embodiments of the present application includes, but is not limited to, the above-mentioned products.

[0052] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0053] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0054] like Figure 1 As shown, a battery 2 is disposed inside the vehicle 1, and the battery 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1.

[0055] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1 .

[0056] In some embodiments of the present application, the battery 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0057] Figure 2 Schematic diagram of an explosion of a battery provided in some embodiments of the present application. Figure 2 As shown, the battery 2 includes a housing 5 and a battery cell 10, and the battery cell 10 is accommodated in the housing 5. The housing 5 is used to provide an accommodation space 53 for the battery cell 10. There can be multiple battery cells 10 in the battery 2, and the multiple battery cells 10 can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells 10 are both connected in series and in parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 10 is accommodated in the housing 5; of course, the battery 2 can also be a battery module formed by connecting multiple battery cells 10 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the housing 5.

[0058] The box body 5 may include a first box body 51 and a second box body 52, and the first box body 51 and the second box body 52 cover each other to define a storage space 53 for accommodating the battery cell 10. The first box body 51 and the second box body 52 may be in various shapes, such as a cuboid, a cylinder, etc. The first box body 51 may be a hollow structure with one side open, and the second box body 52 may also be a hollow structure with one side open, and the open side of the second box body 52 covers the open side of the first box body 51, thereby forming a box body 5 with a storage space 53.

[0059] The battery 2 may further include other structures. For example, the battery 2 may further include a busbar component for achieving electrical connection between the plurality of battery cells 10 .

[0060] The following is a further description of the technical solutions of the battery thermal management component, battery and electrical device provided in the specific implementation manner of the present application.

[0061] Some embodiments of the present application provide a thermal management component of a battery, such as Figure 3As shown, the thermal management component of the battery includes a connecting tube 8, a sealing member 9, a plurality of current collectors 6 and a plurality of heat exchange components 7, the plurality of current collectors 6 are arranged along a first direction X, the current collectors 6 include interconnected wall portions 61 and joints 62, the wall portions 61 surround a current collecting cavity 611 having an opening 612, the joint 62 is located on one side of the wall portion 61 in the first direction X and is provided with a connecting hole communicating with the current collecting cavity 611; the plurality of heat exchange components 7 are respectively connected to the openings 612 of the plurality of current collectors 6, the heat exchange components 7 have a heat exchange flow channel 71 communicating with the current collecting cavity 611; the connecting tube 8 is used to connect adjacent current collectors 6, at least a portion of the joint 62 is inserted into the connecting tube 8 and fixed to the connecting tube 8; the sealing member 9 is clamped between the connecting tube 8 and the joint 62.

[0062] The heat exchange component 7 may be a component in the thermal management assembly of the battery that is used to contact the battery cell 10 in the battery 2 for heat exchange. A heat exchange channel 71 is provided in the heat exchange component 7, and a heat exchange medium can be circulated into the heat exchange component 7 through the heat exchange channel 71, so that the heat exchange component 7 can maintain a temperature difference with the battery cell 10, so that the heat exchange component 7 can continuously and efficiently exchange heat with the battery cell 10. Exemplarily, the heat exchange component 7 may include a heat exchange plate or a heat exchange sheet provided with a heat exchange channel 71, and those skilled in the art may set the type of the heat exchange component 7 according to actual conditions, so that the heat exchange component 7 can be in good contact with the battery cell 10 for efficient heat exchange.

[0063] There may be one or more heat exchange channels 71 provided in the heat exchange component 7. For example, the heat exchange component 7 may be provided with a plurality of heat exchange channels 71 that are interconnected, and the plurality of heat exchange channels 71 are evenly distributed in the heat exchange component 7, so that the heat exchange component 7 has a stable and uniform heat exchange capacity. The plurality of heat exchange channels 71 of the heat exchange component 7 may be connected in series, in parallel, or in mixed connection.

[0064] The current collector 6 can be a component in the thermal management assembly used to connect the heat exchange component 7 to the connecting pipe 8. It can not only collect the heat exchange medium in the heat exchange channel 71 of the heat exchange component 7, but also connect the heat exchange channel 71 with the connecting pipe 8, so as to facilitate the heat exchange medium to enter or discharge from the heat exchange component 7.

[0065] The multiple current collectors 6 and the multiple heat exchange components 7 are arranged one by one, so that each current collector 6 can be connected to the connecting pipe 8 through the current collector 6. The multiple current collectors 6 are arranged at intervals along the first direction X, so that the battery cell 10 can be arranged between two adjacent current collectors 6, which facilitates the battery cell 10 to contact with the heat exchange component 7 for heat exchange.

[0066] The wall portion 61 and the joint 62 are different structural parts connected to each other in the current collector 6. The wall portion 61 is used to connect with the heat exchange component 7, and the joint 62 is used to connect with the connecting pipe 8. The manifold 611 can be a cavity structure surrounded by the wall portion 61, and the opening 612 can be used to make the heat exchange component 7 conveniently connected to the wall portion 61 and the heat exchange channel 71 is connected to the manifold 611, so that the heat exchange medium in the heat exchange channel 71 can be collected in the manifold 611.

[0067] The communication hole may be a channel provided on the joint 62 and communicating with the current collecting cavity 611, and is used to communicate with the connecting pipe 8. By providing the joint 62 on one side of the wall portion 61 in the first direction X, the joint 62 can more conveniently connect a plurality of current collectors 6 provided along the first direction X through the connecting pipe 8 extending along the first direction X.

[0068] The connecting tube 8 can be a tube body used to connect adjacent current collectors 6. By inserting at least a portion of the connector 62 into the connecting tube 8, the connecting tube 8 is connected to the connector 62, and the collecting cavity 611 is connected to the inner cavity of the connecting tube 8 through the connecting hole, so that the heat exchange medium can flow between the heat exchange channel 71, the collecting cavity 611, the connecting hole and the inner cavity of the connecting tube 8.

[0069] The seal 9 can be a component used to seal the connection between the connecting pipe 8 and the joint 62, which can reduce the risk of leakage of the heat exchange medium at the connection between the connecting pipe 8 and the joint 62, so that the joint 62 can be well sealed and connected to the connecting pipe 8 even without secondary machining.

[0070] The sealing member 9 may be an elastic member, and by being sandwiched between the connecting pipe 8 and the joint 62 , the sealing member 9 can well seal the gap between the connecting pipe 8 and the joint 62 through its own elastic deformation.

[0071] In the above-mentioned mechanism, since a seal 9 is sandwiched between the connecting tube 8 and the joint 62, the seal 9 can seal the gap between the connecting tube 8 and the joint 62, so that the joint 62 can be well sealed with the connecting tube 8 without secondary machining, which is beneficial to reducing the processing steps of the current collector 6 and reducing the manufacturing cost, thereby helping to reduce the cost of the thermal management component of the battery.

[0072] In some embodiments, the sealing member 9 may be an O-ring, which is sandwiched between the connecting pipe 8 and the joint 62 to improve the sealing between the joint 62 and the connecting pipe 8 .

[0073] In some embodiments, Figure 4 As shown, the joint 62 is provided with a positioning groove 621 , and at least a portion of the sealing member 9 is accommodated in the positioning groove 621 .

[0074] The positioning groove 621 may be a groove-shaped structure for positioning the seal 9. The positioning groove 621 may be provided on the surface of the joint 62 so that the seal 9 can be positioned at a preset position of the joint 62, which is conducive to improving the convenience of the installation process of the seal 9.

[0075] By accommodating at least part of the seal 9 in the positioning groove 621, the seal 9 can be limited by the inner wall of the positioning groove 621, so that during the assembly of the thermal management component, the seal 9 is not easily moved and misplaced or falls off the joint 62, thereby facilitating the assembly of the thermal management component.

[0076] At least part of the seal 9 is accommodated in the positioning groove 621, and part of the seal 9 can be located in the accommodating groove, and the other part of the seal 9 extends out from the accommodating groove. The seal 9 is clamped between the connecting pipe 8 and the joint 62, so that the seal 9 is supported against the bottom surface of the accommodating groove and the connecting pipe 8 under the action of elastic force, so that the inner cavity of the connecting pipe 8 and the connecting hole are sealed and connected.

[0077] In some embodiments, Figure 5 and Figure 6 As shown, the connecting pipe 8 includes a pipe 81 and a step 82 protruding from the inner wall of the pipe 81 . Along the first direction X, the sealing member 9 is sandwiched between the step 82 and the joint 62 .

[0078] The pipe 81 may refer to a wall structure that encloses a flow channel in the connecting pipe 8, which enables the heat exchange medium to flow in the connecting pipe 8 without leakage. The step 82 may be a structure that protrudes from the inner wall of the pipe 81 toward the flow channel in the connecting pipe 8, and it may protrude in the radial direction of the connecting pipe 8 toward the flow channel in the connecting pipe 8.

[0079] By making the step 82 protrude from the inner wall of the pipe 81, the step 82 can block and resist the pipe 81 extending along the first direction X, so that the seal 9 can be clamped between the step 82 and the joint 62 in the first direction X, so that the seal 9 can seal the gap at the connection between the joint 62 and the connecting pipe 8.

[0080] The end of the joint 62 away from the wall portion 61 in the first direction X is inserted into the connecting pipe 8, and the sealing member 9 is sandwiched between the end face of the joint 62 and the step 82 surface of the step 82 along the first direction X, so that the sealing member 9 can seal the connection between the connecting pipe 8 and the joint 62. With this structure, the connection between the connecting pipe 8 and the joint 62 has not only a sealing surface formed by the sleeve arrangement of the connecting pipe 8 and the joint 62, but also a sealing surface formed by the sealing member 9 abutting against the end face of the joint 62 and the step 82 surface, so that the connection between the connecting pipe 8 and the joint 62 has good sealing performance.

[0081] Exemplarily, the positioning groove 621 is formed on the end surface of the joint 62 away from the wall portion 61 in the first direction X, and the positioning groove 621 is arranged around the outside of the communication hole, so that the sealing member 9 can be more conveniently fixed to the end surface of the joint 62 away from the wall portion 61 in the first direction X from the outside of the joint 62. When the joint 62 is inserted into the connecting pipe 8, the sealing member 9 is squeezed and deformed in the first direction X.

[0082] In some embodiments, the positioning groove 621 can also be opened on the outer circumference of the joint 62, so that part of the sealing member 9 can be more conveniently fixed to the joint 62 from the outer circumference of the joint 62. When the joint 62 is inserted into the connecting pipe 8, the sealing member 9 is squeezed and deformed in the radial direction of the joint 62.

[0083] In some embodiments, the pipe 81 includes a first wall 811 and a second wall 812 sleeved on the first wall 811 , and the step 82 protrudes from the first wall 811 .

[0084] The first wall body 811 and the second wall body 812 can be different structural layers distributed radially in the wall body of the pipeline 81, wherein the second wall body 812 is sleeved on the outside of the first wall body 811. By making the pipeline 81 include the first wall body 811 and the second wall body 812 stacked radially, the pipeline 81 has a strong structural strength, which helps to pass the heat exchange medium into the heat exchange component 7 at a preset pressure.

[0085] By arranging the step 82 to protrude from the first wall 811 , the step 82 can protrude from the inner wall of the pipe 81 , so that the step 82 and the sealing member 9 can be sealed and abutted.

[0086] In some embodiments, the elastic modulus of the first wall 811 is smaller than the elastic modulus of the second wall 812 .

[0087] By configuring the elastic modulus of the first wall 811 to be smaller than that of the second wall 812, not only is the texture of the first wall 811 softer than that of the second wall 812, making it easier for the first wall 811 to undergo elastic deformation so that the joint 62 can be more conveniently inserted into the inner cavity of the connecting pipe 8; the texture of the second wall 812 is also harder than that of the first wall 811, so that the second wall 812 can better maintain the shape of the connecting pipe 8 and withstand the pressure of the heat exchange medium.

[0088] Exemplarily, the elastic modulus of the first wall 811 and the elastic modulus of the second wall 812 can be measured and obtained according to the national standard GB / T528-1998. The specific measurement method can be carried out with reference to the national standard GB / T528-1998, which will not be repeated here.

[0089] In some embodiments, the first wall 811 can be made of thermoplastic elastomer, so that the elastic modulus of the first wall 811 is small and the texture is soft, so that the first wall 811 is more likely to be elastically deformed and the connector 62 is more convenient to be inserted into the inner cavity of the connecting tube 8. The second wall 812 can be made of polylaurolactam, which not only enables the second wall 812 to maintain the shape of the connecting tube 8, but also enables the connecting tube 8 to have good wear resistance, which is conducive to extending the service life of the connecting tube 8.

[0090] In some embodiments, the connecting tube 8 is interference fit in the joint 62 .

[0091] By configuring the joint 62 and the connecting pipe 8 to be an interference fit, the inner wall of the connecting pipe 8 can be tightly matched with the outer wall of the joint 62, which is beneficial to improving the sealing of the fitting point between the connecting pipe 8 and the joint 62.

[0092] In some embodiments, Figure 7 As shown, the direction of the opening 612 is arranged to intersect with the extension direction of the connecting pipe 8 .

[0093] By configuring the orientation of the opening 612 to intersect with the extension direction of the connecting tube 8, the arrangement direction of the heat exchange component 7 connected to the opening 612 intersects with the extension direction of the connecting tube 8, so that multiple heat exchange components 7 can be arranged on one side of the connecting tube 8, which facilitates the arrangement of the thermal management component in the battery 2.

[0094] Exemplarily, the orientation of the opening 612 is configured to be perpendicular to the extension direction of the connecting tube 8 , so that the extension direction of the connecting tube 8 is perpendicular to the extension direction of the heat exchange component 7 , making it easy to arrange the thermal management component in the battery 2 , which is beneficial to improving the utilization of the space in the battery 2 .

[0095] In some embodiments, Figure 8 As shown, the current collector 6 is provided with two joints 62 , and the two joints 62 are respectively connected to two sides of the wall portion 61 in the first direction X, and the two joints 62 are respectively connected to different connecting pipes 8 .

[0096] By providing two joints 62 on the current collector 6 and connecting the two joints 62 to the two sides of the wall portion 61 in the first direction X, the current collector 6 is symmetrical in shape in the first direction X, so that the current collector 6 can be formed by casting, which is convenient for processing and manufacturing of the current collector 6.

[0097] Since the two joints 62 in the first direction X are both connected to the current collecting cavity 611 , the two joints 62 of the current collector 6 can be connected to the current collectors 6 on both sides through the connecting tubes 8 , respectively.

[0098] In some embodiments, the current collector 6 is an integrally formed structure.

[0099] The current collector 6 is an integrally formed structure, which means that the current collector 6 is made by an integrally formed process. In some embodiments, the current collector 6 can be formed by integral die-casting, so that the wall portion 61 and the joint 62 can be formed synchronously, which is not only conducive to reducing the processing steps and improving production efficiency, but also conducive to improving the overall structural strength of the current collector 6. At the same time, the integral die-casting of the current collector 6 is also conducive to improving the molding quality of the current collector 6 and reducing the possibility of subsequent secondary machining of the current collector 6.

[0100] Exemplarily, the material of the heat exchange component 7 can be aluminum, which can be made by an extrusion molding process, so that the heat exchange component 7 has excellent thermal conductivity and can better exchange heat with the battery cell 10; the material of the current collector 6 can be aluminum, which can be made by an integrated die-casting molding process, so that the current collector 6 and the heat exchange component 7 are made of the same material, so that the two can be connected together by welding and melting.

[0101] In some embodiments, the collector 6 also includes a guide portion (not shown in the figure), which is located in the collecting cavity 611 and connected to the wall portion 61, and can guide the heat exchange medium flowing through, so that the heat exchange medium in the heat exchange component 7 flows smoothly into the connecting hole through the collecting cavity 611.

[0102] In some embodiments, Fig. 9 As shown, the step 82 is located in the inner cavity of the connecting tube 8. When the connectors 62 are inserted at both ends of the connecting tube 8 along its own extension direction, the step 82 surfaces on both sides of the connecting tube 8 in the extension direction can abut against the sealing member 9. While the step 82 seals the connection between the two connectors 62 and the connecting tube 8, the abutting force applied to it is relatively balanced.

[0103] Some embodiments of the present application also provide a battery 2, such as Fig.10 As shown, the battery 2 includes the battery thermal management component provided by the above technical solution and a plurality of battery cells 10 , and the plurality of heat exchange components 7 of the battery thermal management component are used for exchanging heat with the plurality of battery cells 10 .

[0104] Since the battery 2 includes the battery 2 provided by the above technical solution, the battery 2 also has a lower cost.

[0105] Multiple battery cells 10 can be connected in series, in parallel or in mixed connection, where mixed connection means that multiple battery cells 10 are connected in series and in parallel. For example, the battery cells 10 exchange heat by being in close contact with the heat exchange component 7, so that the battery cells 10 can be in a suitable temperature range.

[0106] The battery 2 may further include other structures. For example, the battery 2 may further include a busbar component for achieving electrical connection between the plurality of battery cells 10 .

[0107] In some embodiments, battery cells 10 are disposed between adjacent heat exchange components 7 .

[0108] By disposing the battery cells 10 between adjacent heat exchange components 7 , the battery cells 10 can exchange heat with the heat exchange components 7 on both sides, which helps to improve the heat exchange efficiency of the battery 2 .

[0109] Some embodiments of the present application also provide an electric device, which includes the battery 2 provided by the above technical solution, and the battery 2 is used to provide electric energy. Since the electric device includes the battery 2 provided by the above technical solution, the electric device also has a lower cost.

[0110] The electrical device provided in the embodiment of the present application may be any device provided by the above technical solution.

[0111] According to some embodiments of the present application, the present application provides a thermal management component of a battery, which includes a seal 9, a plurality of connecting tubes 8, a plurality of current collectors 6 and a plurality of heat exchange components 7, wherein the plurality of current collectors 6 and the plurality of heat exchange components 7 are arranged in a one-to-one correspondence, and the plurality of current collectors 6 are arranged at intervals along a first direction X, the current collector 6 includes a wall portion 61 and two joints 62 connected to the wall body on both sides of the first direction X, the wall portion 61 surrounds a current collecting cavity 611 having an opening 612, the joint 62 is provided with a connecting hole connected to the current collecting cavity 611, the heat exchange component 7 is connected to the opening 612, the joints 62 of two adjacent current collectors 6 are respectively interference-inserted at both ends of the connecting tube 8 in the first direction X, the connecting tube 8 is provided with a step 82 protruding from the inner wall of the pipe 81, and the seal 9 is clamped between the step 82 and the joint 62 along the first direction X.

[0112] In the above-mentioned mechanism, since a seal 9 is sandwiched between the connecting tube 8 and the joint 62, the seal 9 can seal the gap between the connecting tube 8 and the joint 62, so that the joint 62 can be well sealed with the connecting tube 8 without secondary machining, which is beneficial to reducing the processing steps of the current collector 6 and reducing the manufacturing cost, thereby helping to reduce the cost of the thermal management component of the battery.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A thermal management component for a battery, characterized in that: include: A plurality of current collectors are arranged along a first direction, the current collectors include interconnected wall portions and joints, the wall portions enclose a current collecting cavity with an opening, the joint is located on one side of the wall portion in the first direction and is provided with a communication hole communicating with the current collecting cavity; A plurality of heat exchange components are respectively connected to the openings of the plurality of current collectors, and the heat exchange components have heat exchange channels communicating with the current collecting chamber; A connecting tube, used to connect adjacent current collectors, at least a portion of the connector is inserted into and fixed to the connecting tube; A sealing member is sandwiched between the connecting pipe and the joint.

2. The thermal management assembly of a battery according to claim 1, characterized in that: The joint is provided with a positioning groove, and at least a part of the sealing member is accommodated in the positioning groove.

3. The thermal management assembly of a battery according to claim 1, characterized in that: The connecting pipe includes a pipe and a step protruding from the inner wall of the pipe, and along the first direction, the sealing member is sandwiched between the step and the joint.

4. The thermal management assembly of a battery according to claim 3, characterized in that: The pipeline includes a first wall body and a second wall body sleeved on the first wall body, and the step protrudes from the first wall body.

5. The thermal management assembly of a battery according to claim 4, characterized in that: The elastic modulus of the first wall is smaller than the elastic modulus of the second wall.

6. The thermal management assembly of a battery according to any one of claims 1 to 5, characterized in that: The direction of the opening is arranged to intersect with the extending direction of the connecting pipe.

7. The thermal management assembly of a battery according to any one of claims 1 to 5, characterized in that: The current collector is provided with two joints, the two joints are respectively connected to two sides of the wall portion in the first direction, and the two joints are respectively connected to the connecting pipes.

8. The thermal management assembly of a battery according to any one of claims 1 to 5, characterized in that: The current collector is an integrally formed structure.

9. The thermal management assembly of a battery according to any one of claims 1 to 5, characterized in that: The connecting pipe is interference-fitted with the joint.

10. A battery, characterized in that: The invention comprises a thermal management assembly of a battery as claimed in any one of claims 1 to 9 and a plurality of battery cells, wherein the plurality of heat exchange components of the thermal management assembly of the battery are used for exchanging heat with the plurality of battery cells.

11. The battery according to claim 10, characterized in that The battery cells are arranged between adjacent heat exchange components.

12. An electrical device, characterized in that: Comprising a battery as claimed in claim 10 or 11, the battery is used to provide electrical energy.

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