Heat exchange assembly and battery module

Abstract

The utility model relates to the technical field of heat exchange assemblies, and particularly discloses a heat exchange assembly and a battery module, the heat exchange assembly comprises a liquid cooling plate and a heating module; a containing cavity is formed in the liquid cooling plate, the heating module is contained in the containing cavity, the containing cavity is filled with heat-conducting glue used for fixing the heating module, and the liquid cooling plate is provided with a liquid cooling flow channel on the periphery of the containing cavity. The liquid cooling plate is provided with a liquid inlet and a liquid outlet which are respectively communicated with the liquid cooling flow channel; the battery module comprises a plurality of battery monomers arranged at intervals and a plurality of heat exchange assemblies, and every two adjacent battery monomers jointly clamp one heat exchange assembly; the heat exchange assembly mainly solves the technical problems that heat exchange on the two sides of an existing heat exchange assembly with the heating function and the cooling function is not uniform, thermal runaway of a single battery is likely to happen, and the single battery is likely to be burnt through.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange components, and in particular to a heat exchange component and a battery module. Background Art

[0002] Currently, heat exchange assemblies are commonly used within battery modules. Some heat exchange assemblies can both cool and heat adjacent battery cells, allowing each internal battery cell to operate within an appropriate temperature range and improve the safety of battery module operation. To achieve both heating and cooling functions, existing heat exchange assemblies typically simply bond a liquid cooling plate and a resistance wire adjacent to each other, resulting in different heating and cooling efficiencies on both sides of the heat exchange assembly. Specifically, assuming that the battery cell adjacent to the liquid cooling plate of the existing heat exchange assembly is a first battery cell, and the battery cell adjacent to the resistance wire of the existing heat exchange assembly is a second battery cell, using the existing heat exchange assembly, when heating, the heating efficiency of the first battery cell is significantly lower than that of the second battery cell, and when cooling, the cooling efficiency of the second battery cell is significantly lower than that of the first battery cell. In other words, when operating, existing heat exchange assemblies often suffer from low heating or cooling efficiency on one side of the battery cell, resulting in poor temperature consistency between the battery cells on both sides of the heat exchange assembly, which has a certain impact on the performance of the battery cells. In addition, the current heat transfer method of direct contact between the resistance wire in the heat exchange assembly and the adjacent battery cells can easily cause the temperature of the battery cells to rise too quickly and cause thermal runaway. On the other hand, it can also easily cause the battery cells to burn through and cause leakage and short circuits. Therefore, there is a high safety hazard. Utility Model Content

[0003] The utility model provides a heat exchange component and a battery module, which mainly solve the technical problems of uneven heat exchange on both sides of the existing heat exchange component with heating and cooling functions, which easily causes thermal runaway and burn-through of battery cells.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A heat exchange assembly includes a liquid cooling plate and a heating module;

[0006] A receiving cavity is provided inside the liquid cooling plate, the heating module is received in the receiving cavity, the receiving cavity is filled with thermal conductive glue for fixing the heating module, the liquid cooling plate is provided with a liquid cooling channel on the periphery of the receiving cavity, and the liquid cooling plate is provided with a liquid inlet and a liquid outlet respectively connected to the liquid cooling channel.

[0007] In one technical solution, the liquid-cooling flow channel includes a liquid inlet flow channel and a liquid outlet flow channel extending along a first direction, the starting end of the liquid inlet flow channel along the first direction and the starting end of the liquid outlet flow channel along the first direction are both U-shaped and surrounded by the accommodating cavity, the end of the liquid inlet flow channel along the first direction and the end of the liquid outlet flow channel along the first direction are connected to each other, the liquid inlet is connected to the starting end of the liquid inlet flow channel in the first direction, and the liquid outlet is connected to the starting end of the liquid outlet flow channel in the first direction;

[0008] The first direction is the same as the length direction of the liquid cooling plate.

[0009] In one technical solution, the liquid inlet channel and the liquid outlet channel both pass through both ends of the liquid cooling plate along the first direction, and the heat exchange assembly further includes a first blocking member, a second blocking member, and a third blocking member;

[0010] The first blocking member and the second blocking member are both U-shaped, the first blocking member blocks the starting end of the liquid inlet channel in the first direction, and the second blocking member blocks the starting end of the liquid outlet channel in the first direction;

[0011] The third blocking member is an annular structure, and the third blocking member simultaneously blocks the end of the liquid inlet channel in the first direction and the end of the liquid outlet channel in the first direction.

[0012] In one of the technical solutions, the third blocking member has a fixing portion extending outwardly, and a tie member for bundling the wire harness is fixed on the fixing portion.

[0013] In one technical solution, the heating module includes a resistance wire, an insulating film, a first connector and a second connector;

[0014] The insulating film wraps the resistance wire and is housed together with the resistance wire in the housing cavity. The thermally conductive adhesive is bonded to the outer surface of the insulating film. The first connector is connected to the positive electrode of the resistance wire via a first wire, and the second connector is connected to the negative electrode of the resistance wire via a second wire.

[0015] The third blocking member has two fixing portions extending outward, and the tie members are fixed on both fixing portions. One of the tie members is used to bind the first wire, and the other of the tie members is used to bind the second wire.

[0016] In one of the technical solutions, the outer surface of the liquid cooling plate includes a first area facing the desired heat exchange object and a second area protruding relative to the desired heat exchange object. The heat exchange assembly also includes a thermal pad bonded to the first area of ​​the liquid cooling plate, and the liquid inlet and the liquid outlet are both arranged in the second area.

[0017] In one technical solution, the heat exchange assembly further includes a liquid inlet joint and a liquid outlet joint, wherein the interior of the liquid inlet joint is communicated with the liquid inlet, and the interior of the liquid outlet joint is communicated with the liquid outlet;

[0018] The heat exchange assembly further includes thermal insulation cotton wrapped around the second area of ​​the liquid cooling plate, and the thermal insulation cotton is provided with a first avoidance hole for avoiding the liquid inlet joint and a second avoidance hole for avoiding the liquid outlet joint.

[0019] In one of the technical solutions, the liquid cooling plate is provided with a plurality of grooves on the outer surface of the first region, and the grooves are filled with glue that bonds with the thermal pad.

[0020] The present application also provides a battery module, comprising a plurality of battery cells arranged at intervals and a plurality of heat exchange components described in the above technical solution, wherein a heat exchange component is sandwiched between two adjacent battery cells.

[0021] In one of the technical solutions, the liquid cooling channels inside two adjacent heat exchange components are connected to each other by plugging them into each other through joints, and the heating modules inside two adjacent heat exchange components are connected in series or in parallel by plugging them into each other through connectors.

[0022] Compared with the prior art, the heat exchange assembly provided by the present invention has at least the following beneficial effects:

[0023] The present invention provides a receiving cavity in the liquid cooling plate and receives the heating module in the receiving cavity, so that the heating module is arranged inside the liquid cooling plate. Accordingly, the liquid cooling flow channel inside the liquid cooling plate of the present invention can only be arranged on the periphery of the heating module. With the heat exchange component of the present invention, whether in the heating state or the cooling state, the heat exchange component exchanges heat with the battery cells on both sides more evenly. In order to ensure that the internal heating module has a high efficiency in conducting heat outward, the liquid cooling plate of the present invention is filled with thermally conductive adhesive in the receiving cavity. The thermally conductive adhesive can fill the gap between the heating module and the liquid cooling plate. On the one hand, it can reliably fix the heating module in the receiving cavity, and on the other hand, it increases the heat conduction area of ​​the heating module and the liquid cooling plate, thereby improving the external heating efficiency of the heat exchange component. On the other hand, it can prevent the leaked coolant from contacting the internal circuit of the heating module, thereby reducing the risk of short circuit in the heating module.

[0024] In addition, since the heating module of this solution is housed inside the liquid cooling plate, the heating module does not directly contact the surface of the battery cell when heating the battery cell, thereby reducing the risk of the battery cell temperature rising too quickly and easily causing thermal runaway. At the same time, it also solves the problem that the existing heating module is prone to burning through the battery cell and causing leakage and short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a battery module provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 The schematic diagram of the structure of the battery module shown is from another angle;

[0028] Figure 3 A schematic structural diagram of a heat exchange assembly provided in an embodiment of the present application;

[0029] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0030] Figure 5 for Figure 3 A schematic structural diagram of the heat exchange assembly shown in FIG. 1 at another angle;

[0031] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0032] Figure 7 A schematic diagram of the structure of the liquid cooling plate provided in an embodiment of the present application;

[0033] Figure 8 for Figure 7 A schematic diagram of the structure of the other side of the liquid cooling plate shown;

[0034] Figure 9 This is a structural exploded diagram of the heat exchange assembly provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 1. Battery cell; 2. Heat exchange assembly; 21. Liquid cooling plate; 211. Accommodating cavity; 212. Liquid cooling channel; 2121. Liquid inlet channel; 2122. Liquid outlet channel; 213. Liquid inlet; 214. Liquid outlet; 215. First area; 216. Second area; 217. Groove; 22. Heating module; 221. Resistance wire; 222. Insulating film; 223. First connector; 224. Second connector; 225. First wire; 226. Second wire; 23. Thermal adhesive; 24. First sealing member; 25. Second sealing member; 26. Third sealing member; 261. Fixing part; 27. Tie; 28. Thermal pad; 29. ​​Insulation cotton; 291. First avoidance hole; 292. Second avoidance hole; 20. Liquid inlet connector; 30. Liquid outlet connector. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0038] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms, "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0042] Please also refer to Figure 1 and Figure 2An embodiment of the utility model provides a battery module, including multiple battery cells 1 and multiple heat exchange components 2, wherein two adjacent battery cells 1 jointly clamp a heat exchange component 2, and the heat exchange component 2 between each two adjacent battery cells 1 can heat or cool the battery cells 1 on both sides, so that the battery cells 1 on both sides can maintain operation within a suitable temperature range.

[0043] Please also refer to 3 to Figure 9 The heat exchange component 2 specifically includes a liquid cooling plate 21 and a heating module 22, wherein a receiving cavity 211 is provided inside the liquid cooling plate 21, and the heating module 22 is received in the receiving cavity 211, and the receiving cavity 211 is filled with a thermal conductive adhesive 23. The thermal conductive adhesive 23 not only plays the role of firmly fixing the heating module 22 in the receiving cavity 211, but also plays the role of filling the gap between the heating module 22 and the liquid cooling plate 21, thereby increasing the heat conduction area of ​​the heating module 22 and the liquid cooling plate 21, so as to improve the external heating efficiency of the heat exchange component 2. On the other hand, the thermal conductive adhesive 23 can prevent the leaked coolant from contacting the internal circuit of the heating module 22, thereby reducing the risk of short circuit in the heating module 22. In addition, the liquid cooling plate 21 is provided with a liquid cooling channel 212 on the periphery of the receiving cavity 211. The liquid cooling plate 21 is also provided with a liquid inlet 213 and a liquid outlet 214 respectively connected to the liquid cooling channel 212. The liquid inlet 213 is used to supply external cooling liquid to flow into the liquid cooling channel 212, and the liquid outlet 214 is used to supply the cooling liquid inside the liquid cooling channel 212 to flow out, so as to realize the function of the liquid cooling plate 21 to cool down two adjacent battery cells 1. Specifically, this solution provides a receiving cavity 211 in the liquid cooling plate 21 and accommodates the heating module 22 in the receiving cavity 211, so that the heating module 22 is arranged inside the liquid cooling plate 21. Accordingly, the liquid cooling flow channel 212 inside the liquid cooling plate 21 of this solution can only be arranged on the periphery of the heating module 22. By adopting the heat exchange component 2 of this solution, the heat exchange component 2 can more evenly exchange heat for the battery cells 1 on both sides regardless of whether it is in the heating state or the cooling state. In addition, since the heating module 22 of this solution is accommodated inside the liquid cooling plate 21, the heating module 22 does not directly contact the surface of the battery cell 1 when heating the battery cell 1, thereby reducing the risk of the battery cell 1 temperature rising too quickly and easily causing thermal runaway, and also solves the problem that the existing heating module 22 is easy to burn through the battery cell 1 and cause leakage and short circuit.

[0044] Please also refer to Figures 3 to 8The liquid cooling channel 212 includes a liquid inlet channel 2121 and a liquid outlet channel 2122 extending along a first direction (i.e., the X direction), wherein the X direction is the same as the length direction of the liquid cooling plate 21, and the starting end of the liquid inlet channel 2121 along the X direction and the starting end of the liquid outlet channel 2122 along the X direction are both U-shaped and surround the accommodating cavity 211, that is, the starting end of the liquid inlet channel 2121 along the X direction and the starting end of the liquid outlet channel 2122 along the X direction are both U-shaped and surround the heating module 22, and the above-mentioned liquid inlet port 213 and liquid outlet port 214 are both arranged at the starting end of the liquid cooling plate 21 along the X direction, that is, the liquid inlet port 213 is connected to the starting end of the liquid inlet channel 2121 in the X direction, the liquid outlet port 214 is connected to the starting end of the liquid outlet channel 2122 in the X direction, and the end of the liquid inlet channel 2121 in the X direction is connected to the end of the liquid outlet channel 2122 in the X direction. During operation, external coolant enters the liquid inlet channel 2121 from the liquid inlet 213, then flows in the X-direction and into the liquid outlet channel 2122 at the end of the X-direction. It then flows in the opposite direction of the X-direction and finally flows out from the liquid outlet 214. This design of the liquid cooling channel 212 allows for a longer path and more space within the liquid cooling plate 21 for the coolant to flow, thereby improving the efficiency of the liquid cooling plate 21 in cooling the battery cells 1 on both sides.

[0045] Please also refer to Figures 3 to 9 The liquid cooling plate 21 of this embodiment is preferably an aluminum profile structure that is easy to manufacture and has low cost, that is, the above-mentioned liquid inlet channel 2121 and liquid outlet channel 2122 preferably both pass through both ends of the liquid cooling plate 21 along the X direction. In this regard, in order to prevent the problem of cooling liquid leaking outward, the heat exchange assembly 2 of this embodiment further includes a first blocking member 24, a second blocking member 25 and a third blocking member 26, wherein the first blocking member 24 and the second blocking member 25 are both U-shaped, the first blocking member 24 blocks the starting end of the liquid inlet channel 2121 in the X direction, the second blocking member 25 blocks the starting end of the liquid outlet channel 2122 in the X direction, and the third blocking member 26 is a ring-shaped structure, and the third blocking member 26 simultaneously blocks the end of the liquid inlet channel 2121 in the X direction and the end of the liquid outlet channel 2122 in the X direction, thereby preventing the cooling liquid in the liquid inlet channel 2121 and the liquid outlet channel 2122 from leaking outward. The first blocking member 24 , the second blocking member 25 and the third blocking member 26 can all be silicone members with a certain degree of elasticity.

[0046] Please also refer to Figure 5 、 Figure 6 and Figure 9The heating module 22 specifically includes a resistance wire 221, an insulating film 222, a first connector 223 and a second connector 224, wherein the insulating film 222 wraps the resistance wire 221 and is accommodated in the above-mentioned accommodation cavity 211 together with the resistance wire 221. The insulating film 222 can separate the resistance wire 221 and the liquid cooling plate 21 to prevent the resistance wire 221 from directly contacting the liquid cooling plate 21 and causing a short circuit. The above-mentioned thermal conductive glue 23 is actually bonded to the outer surface of the insulating film 222, so that the resistance wire 221 is firmly fixed inside the liquid cooling plate 21, and the first connector 223 and the second connector 224 are connected to the first connector 223 and the second connector 224. The connector 224 is arranged on the outside of the liquid cooling plate 21. The first connector 223 is connected to the positive pole of the resistor 221 via a first wire 225, and the second connector 224 is connected to the negative pole of the resistor 221 via a second wire 226. One of the first connector 223 and the second connector 224 is a male connector and the other is a female connector. This allows two adjacent heat exchange assemblies 2 to be plugged into each other so that the heating modules 22 within them are connected in series or in parallel, thereby easily achieving the function of powering and heating the heating modules 22 within all heat exchange assemblies 2. In addition, the third blocking member 26 has two fixing portions 261 extending outward. Both fixing portions 261 are fixed with tie ties 27. One tie ties 27 is used to bind the first wire 225, and the other tie ties 27 is used to bind the second wire 226. This limits the position of the first wire 225 and the second wire 226, reducing the risk of the first wire 225 and the second wire 226 being cut by metal parts under vibration conditions.

[0047] Please also refer to Figures 3 to 8The outer surface of the liquid cooling plate 21 includes a first region 215 that faces the target heat exchange object (e.g., the battery cell 1 in this embodiment) and a second region 216 that protrudes relative to the battery cell 1. A thermal pad 28 is bonded to the first region 215 of the liquid cooling plate 21. The pad 28 increases the contact area between the heat exchange assembly 2 and the battery cell 1, thereby improving the heat exchange efficiency between the two. Furthermore, because the pad 28 has a certain degree of elasticity, the heat exchange assembly 2 does not restrict the expansion of the battery cells 1 while transferring heat to the two sides, thereby reducing the risk of battery cell 1 explosion. The liquid cooling plate 21 has multiple grooves 217 formed on the outer surface of the first region 215. The grooves 217 are filled with glue that bonds to the pad 28, thereby strengthening the bond between the pad 28 and the liquid cooling plate 21. The pad 28 is preferably made of silicone with suitable thermal conductivity and elasticity. The liquid cooling plate 21 is provided with the above-mentioned liquid inlet 213 and liquid outlet 214 in the second area 216. The heat exchange component 2 of this solution also includes thermal insulation cotton 29 wrapped in the second area 216 of the liquid cooling plate 21. By providing the thermal insulation cotton 29, energy loss can be reduced, and more energy of the heat exchange component 2 can be transferred to the battery cells 1 on both sides, thereby improving the efficiency of the heat exchange component 2 in heat exchange with the battery cells 1 on both sides. In addition, preferably, the heat exchange component 2 also includes a liquid inlet connector 20 and a liquid outlet connector 30. The liquid inlet connector 20 is welded to the outer surface of the liquid cooling plate 21 and is internally connected to the liquid inlet 213. The liquid outlet connector 30 is welded to the outer surface of the liquid cooling plate 21 and is internally connected to the liquid outlet 214. One of the liquid inlet connector 20 and the liquid outlet connector 30 is a male connector and the other is a female connector, so that the liquid cooling channels 212 inside the two adjacent heat exchange components 2 can be connected to each other by plugging the connectors into each other. In other words, it is only necessary to introduce coolant into one of the heat exchange components 2 at the end, and the coolant will flow into each heat exchange component 2 in turn, thereby cooling down multiple battery cells 1. It can be seen that this solution is convenient for multiple heat exchange components 2 to flow with coolant after installation, and it is also convenient for each heat exchange component 2 to be disassembled separately, thereby improving the efficiency of subsequent maintenance. Accordingly, the insulation cotton 29 needs to be provided with a first avoidance hole 291 for avoiding the liquid inlet joint 20 and a second avoidance hole 292 for avoiding the liquid outlet joint 30. Figure 3 or Figure 4 As shown, this solution preferably designs the heat exchange component 2 to have liquid inlet and outlet at one end along the X direction, and the other end along the X direction is designed to lead out the positive and negative poles of the internal resistance wire 221, which can reduce the risk of short circuiting the resistance wire 221 when the coolant leaks.

[0048] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A heat exchange component, characterized in that: It includes a liquid cooling plate (21) and a heating module (22); The liquid cooling plate (21) is provided with a receiving cavity (211) inside, the heating module (22) is received in the receiving cavity (211), the receiving cavity (211) is filled with a heat-conducting adhesive (23) for fixing the heating module (22), the liquid cooling plate (21) is provided with a liquid cooling channel (212) on the periphery of the receiving cavity (211), and the liquid cooling plate (21) is provided with a liquid inlet (213) and a liquid outlet (214) respectively connected to the liquid cooling channel (212).

2. The heat exchange assembly according to claim 1, wherein: The liquid cooling channel (212) comprises a liquid inlet channel (2121) and a liquid outlet channel (2122) extending in a first direction, the starting end of the liquid inlet channel (2121) along the first direction and the starting end of the liquid outlet channel (2122) along the first direction are both U-shaped and surrounded by the accommodating cavity (211), the end of the liquid inlet channel (2121) along the first direction and the end of the liquid outlet channel (2122) along the first direction are communicated with each other, the liquid inlet (213) is communicated with the starting end of the liquid inlet channel (2121) in the first direction, and the liquid outlet (214) is communicated with the starting end of the liquid outlet channel (2122) in the first direction; Wherein, the first direction is the same as the length direction of the liquid cooling plate (21).

3. The heat exchange assembly according to claim 2, wherein: The liquid inlet channel (2121) and the liquid outlet channel (2122) both pass through both ends of the liquid cooling plate (21) along the first direction, and the heat exchange assembly further comprises a first blocking member (24), a second blocking member (25), and a third blocking member (26); The first blocking member (24) and the second blocking member (25) are both U-shaped, the first blocking member (24) blocks the starting end of the liquid inlet channel (2121) in the first direction, and the second blocking member (25) blocks the starting end of the liquid outlet channel (2122) in the first direction; The third blocking member (26) is an annular structure, and the third blocking member (26) simultaneously blocks the end of the liquid inlet channel (2121) in the first direction and the end of the liquid outlet channel (2122) in the first direction.

4. The heat exchange assembly according to claim 3, characterized in that: The third blocking member (26) has a fixing portion (261) extending outward, and a tie member (27) for binding the wire harness is fixed on the fixing portion (261).

5. The heat exchange assembly according to claim 4, characterized in that: The heating module (22) comprises a resistance wire (221), an insulating film (222), a first connector (223) and a second connector (224); The insulating film (222) wraps the resistance wire (221) and is housed together with the resistance wire (221) in the housing cavity (211); the first connector (223) is connected to the positive electrode of the resistance wire (221) via a first wire (225); and the second connector (224) is connected to the negative electrode of the resistance wire (221) via a second wire (226); The third blocking member (26) extends outwardly to have two fixing portions (261), and the two fixing portions (261) are both fixed with the tie member (27), one of the tie member (27) is used to bind the first wire (225), and the other of the tie member (27) is used to bind the second wire (226).

6. The heat exchange assembly according to claim 1, wherein: The outer surface of the liquid cooling plate (21) includes a first area (215) facing the desired heat exchange object and a second area (216) protruding relative to the desired heat exchange object. The heat exchange component also includes a thermal pad (28) bonded to the first area (215) of the liquid cooling plate (21), and the thermal pad (28) is elastic. The liquid inlet (213) and the liquid outlet (214) are both arranged in the second area (216).

7. The heat exchange assembly according to claim 6, wherein: The heat exchange assembly further comprises a liquid inlet joint (20) and a liquid outlet joint (30), wherein the interior of the liquid inlet joint (20) is in communication with the liquid inlet (213), and the interior of the liquid outlet joint (30) is in communication with the liquid outlet (214); The heat exchange assembly further includes a heat-insulating cotton (29) wrapped around the second area (216) of the liquid cooling plate (21), and the heat-insulating cotton (29) is provided with a first avoidance hole (291) for avoiding the liquid inlet joint (20) and a second avoidance hole (292) for avoiding the liquid outlet joint (30).

8. The heat exchange assembly according to claim 6, wherein: The liquid cooling plate (21) is provided with a plurality of grooves (217) on the outer surface of the first region (215), and the grooves (217) are filled with glue that is bonded to the thermal pad (28).

9. A battery module, characterized in that: The invention comprises a plurality of battery cells (1) arranged at intervals and a plurality of heat exchange components (2) according to any one of claims 1 to 8, wherein two adjacent battery cells (1) jointly clamp one heat exchange component (2).

10. The battery module according to claim 9, wherein: Two adjacent heat exchange components (2) are connected to each other by means of joints so that the liquid cooling channels (212) inside the two components are connected to each other, and two adjacent heat exchange components (2) are connected to each other by means of connectors so that the heating modules (22) inside the two components are connected to each other in series or in parallel.

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