Heat exchange assembly and battery pack with same

Abstract

The utility model discloses a heat exchange assembly and a battery pack with the same, the heat exchange assembly is provided with a plurality of liquid cooling flow channels and a plurality of direct cooling flow channels, the liquid cooling flow channels extend along a first direction, the direct cooling flow channels comprise a plurality of flow channel parts extending along the first direction, and the plurality of flow channel parts and the plurality of liquid cooling flow channels are arranged in a staggered manner in a second direction. The liquid cooling flow channel and the direct cooling flow channel are not communicated, and the second direction intersects with the first direction. According to the heat exchange assembly disclosed by the utility model, the liquid cooling flow channels and the direct cooling flow channels are arranged, the liquid cooling flow channels extend along the first direction, the flow channel parts of the direct cooling flow channels extend along the first direction, and the plurality of liquid cooling flow channels and the plurality of flow channel parts are staggered in the second direction, so that the heat exchange assembly can well meet the heat exchange requirement of the battery pack; the heat exchange piece can achieve a good temperature equalizing effect on the battery pack, so that the temperature distribution in the battery pack is more uniform, and the battery pack is more stable and reliable in operation and better in performance.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a heat exchange component and a battery pack having the same. Background Art

[0002] Currently, the development of new energy vehicles is rapid. In order to shorten the charging time of vehicles as much as possible, the fast charging rate of the power battery in the vehicle is also increasing. This causes the heat generation of the battery to rise sharply. The excessively high temperature, in turn, limits the charging rate. Liquid cooling solutions are no longer sufficient to meet the heat dissipation needs of the battery pack. Therefore, in order to improve the cooling effect, the battery pack adopts a direct cooling technology solution. However, since it does not have a heating capacity, an additional heating film is required to assist in heating.

[0003] In related technologies, a combination of direct cooling and liquid cooling is used to exchange heat between the battery modules in the battery pack. This allows the battery modules to dissipate heat at high temperatures through direct cooling and liquid cooling, and to be heated at low temperatures through liquid cooling. However, the heat exchange process results in poor temperature uniformity, leading to uneven temperature distribution within the battery pack and consequently reducing the operational stability and performance of the battery pack. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a heat exchange component that can make the temperature distribution within the battery pack more uniform while meeting the heat exchange requirements of the battery pack, thereby making the battery pack operation more stable and reliable, and improving its performance.

[0005] This invention also proposes a battery pack having the above-mentioned heat exchange components.

[0006] According to a first aspect of the present invention, a heat exchange component is used in a battery pack. The heat exchange component has a liquid cooling channel and a direct cooling channel. The liquid cooling channel extends along a first direction and there are multiple liquid cooling channels. The direct cooling channel includes multiple channel portions extending along the first direction. The multiple channel portions and the multiple liquid cooling channels are arranged alternately in a second direction, and the liquid cooling channels and the direct cooling channels are not connected. The second direction intersects with the first direction.

[0007] According to the heat exchange component of this utility model, by providing liquid cooling channels and direct cooling channels, the liquid cooling channels extend along a first direction, and the channel portion of the direct cooling channels extends along the first direction. Multiple liquid cooling channels and multiple channel portions are arranged alternately in a second direction, so that the heat exchange component can well meet the heat exchange needs of the battery pack, and the heat exchange components can achieve a good temperature uniformity effect on the battery pack, thereby making the temperature distribution inside the battery pack more uniform, making the battery pack operation more stable and reliable, and improving its performance.

[0008] In some embodiments of this utility model, the liquid cooling channel is provided with a first end and a second end, one of the first end and the second end forming a liquid inlet and the other forming a liquid outlet. The heat exchange assembly further includes a bridging member, which is connected to the first end and the second end of two adjacent liquid cooling channels to enable the plurality of liquid cooling channels to communicate.

[0009] In one embodiment of the present invention, in the second direction, the liquid inlet ends of the two outermost liquid cooling channels are formed as first liquid inlets, and the crossover member located in the middle is provided with a first liquid outlet; or in the second direction, each of the liquid cooling channels is connected in series; and / or, the first liquid inlet and the plurality of crossover members are located on the same side of the liquid cooling channels in the first direction.

[0010] In one embodiment of the present invention, the heat exchange assembly includes a heat exchange plate, the heat exchange plate includes a flow channel plate and a cover plate, the flow channel plate is formed with a flow channel groove, the cover plate covers the flow channel groove and cooperates with the flow channel plate to form the liquid cooling flow channel and the direct cooling flow channel, and the jumper is fixed to the cover plate.

[0011] In some embodiments of this utility model, the liquid cooling channel includes a plurality of first channels, which are arranged and connected in the second direction.

[0012] In some embodiments of this utility model, the direct cooling channel further includes: a connecting channel, through which multiple channel portions are connected; a liquid inlet channel, in the second direction, the liquid inlet channel is connected to the two outermost channel portions, and the end of the liquid inlet channel opposite to the channel portion forms a second liquid inlet; and a liquid outlet channel, in the second direction, the liquid outlet channel is connected to the middle channel portion, and the end of the liquid outlet channel opposite to the channel portion forms a second liquid outlet.

[0013] In one embodiment of the present invention, the flow channel portion includes a plurality of second flow channels, which are arranged and connected in the second direction.

[0014] In some embodiments of this utility model, the total flow area of ​​the liquid cooling channel can account for 5%-95% of the total flow area of ​​the liquid cooling channel and the direct cooling channel, and the total flow area of ​​the direct cooling channel can account for 5%-95% of the total flow area of ​​the liquid cooling channel and the direct cooling channel.

[0015] In some embodiments of this utility model, the heat exchange assembly includes a heat exchange plate. The number of heat exchange plates is one, and the heat exchange plate forms the liquid cooling channel and the direct cooling channel. Alternatively, the number of heat exchange plates is two, one of the two heat exchange plates forms the liquid cooling channel and the other forms the direct cooling channel. The two heat exchange plates are respectively arranged on both sides of the battery module of the battery pack in a third direction, and the third direction intersects the second direction and the first direction in pairs.

[0016] A battery pack according to a second aspect of the present invention includes: a housing having a receiving cavity; a battery module and a heat exchange assembly according to a first aspect of the present invention, wherein the battery module and the heat exchange assembly are both disposed within the receiving cavity.

[0017] According to the battery pack of this utility model, by setting the heat exchange component of the first aspect mentioned above, the heat exchange component is provided with liquid cooling channel and direct cooling channel. The liquid cooling channel extends along the first direction, and the channel portion of the direct cooling channel extends along the first direction. Multiple liquid cooling channels and multiple channel portions are arranged alternately in the second direction, so that the heat exchange component can well meet the heat exchange needs of the battery pack, and the heat exchange component can play a good role in uniformly heating the battery pack, thereby making the temperature distribution inside the battery pack more uniform, making the battery pack operation more stable and reliable, and improving its performance.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a partial explosion of a battery pack according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a partial explosion of a heat exchange component according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the flow channel plate according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the cover plate, the jumper, and the direct cooling joint according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the flow channel plate, the crossover member, and the direct cooling joint according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 10. Heat exchange components;

[0026] 101, Liquid Cooling Channel; 1011, First Channel;

[0027] 102. Straight cooling channel; 1021. Channel section; 10211. Second channel;

[0028] 1022. Connecting flow channel; 1023. Inlet flow channel; 1024. Outlet flow channel;

[0029] 11. Heat exchange plate; 111. Flow channel plate; 112. Cover plate;

[0030] 12. Jumper connector; 13. Direct cooling connector;

[0031] 20. Housing; 201. Receiving cavity; 30. Battery module; 40. Heat-conducting component;

[0032] 100. Battery pack. DETAILED DESCRIPTION

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] First, refer to Figure 1 A brief description of the battery pack 100 according to a second aspect embodiment of the present invention is provided. The battery pack 100 includes a housing 20, a battery module 30, and a heat exchange assembly 10. The battery module 30 and the heat exchange assembly 10 are both disposed in the receiving cavity 201 of the housing 20. The heat exchange assembly 10 can exchange heat with the battery module 30. The heat exchange assembly 10 can be arranged on one side or both sides of the battery module 30 as needed.

[0035] The following is for reference. Figures 1-5 A heat exchange assembly 10 according to a first aspect embodiment of the present invention is described.

[0036] like Figures 1-5 As shown, according to a first aspect embodiment of the present invention, the heat exchange assembly 10 has a liquid cooling channel 101 and a direct cooling channel 102, the liquid cooling channel 101 being along a first direction (e.g., Figure 1 The direct cooling channel 102 extends in a first direction and is multiple in number (as shown in the front-back direction). The multiple channel portions 1021 extend along a first direction, and the multiple liquid cooling channels 101 connect in a second direction (as shown in the front-back direction). Figure 1 The left and right directions are staggered, and the liquid cooling channel 101 and the direct cooling channel 102 are not connected. The second direction intersects with the first direction.

[0037] In this embodiment, the heat exchange component 10 has a liquid cooling channel 101 and a direct cooling channel 102, and the liquid cooling channel 101 and the direct cooling channel 102 are not connected. This allows the liquid cooling channel 101 and the direct cooling channel 102 to perform heat exchange operations independently or in combination as needed. When the heat exchange component 10 performs heat exchange operations on the battery module 30 in the battery pack 100, it can use liquid cooling, direct cooling, or a combination of both as needed. For example, when the battery pack 100 needs heat dissipation, the liquid cooling channel 101 in the heat exchange component 10 can circulate a liquid cooling medium to circulate the heat exchange medium. The battery cells in the battery module 30 are cooled. When the battery pack 100 generates a lot of heat and the liquid cooling channel 101 is insufficient to meet the heat dissipation requirements, the direct cooling channel 102 in the heat exchange assembly 10 can be circulated with direct cooling refrigerant to cool the battery cells. The liquid cooling channel 101 and the direct cooling channel 102 in the heat exchange assembly 10 can also perform cooling operations simultaneously, making the heat exchange and cooling efficiency of the battery pack 100 higher. Of course, the heat exchange assembly 10 can also directly use the direct cooling channel 102 to perform direct cooling operations on the battery module 30 as needed to meet the cooling and heat dissipation requirements of the battery pack 100.

[0038] When the battery pack 100 needs to be heated, the liquid cooling channel 101 in the heat exchange component 10 can circulate liquid cooling medium to heat the battery cells in the battery module 30, which has higher heating efficiency and better heating effect than heating film.

[0039] In this embodiment, the liquid cooling channel 101 extends along the first direction, and the channel portion 1021 of the direct cooling channel 102 extends along the first direction. The multiple liquid cooling channels 101 and multiple channel portions 1021 are arranged alternately in the second direction. The structure is simple, and the arrangement of the liquid cooling channels 101 and the direct cooling channel 102 is relatively compact and reasonable. The multiple liquid cooling channels 101 and multiple channel portions 1021 are arranged alternately in the second direction. For example, in the second direction, there are two channel portions 1021 on both sides of one liquid cooling channel 101, and two liquid cooling channels 101 on both sides of one channel portion 1021.

[0040] It is understandable that when the refrigerant is introduced into the direct cooling channel 102 for cooling, the temperature difference is large. Since the heat exchange requirements of the battery cells in different parts of the battery module 30 are different, the heat in the battery module 30 in different locations cannot achieve a uniform temperature effect through the direct cooling channel 102.

[0041] The second direction intersects with the first direction to indicate that the first and second directions can be arranged perpendicularly or only intersecting but not perpendicularly, that is, intersecting at an acute or obtuse angle. For example, the first and second directions can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0042] In this embodiment, multiple liquid cooling channels 101 and multiple channel sections 1021 are arranged in an alternating manner, so that the heat exchange area of ​​the liquid cooling channel 101 can overlap with the heat exchange area of ​​the direct cooling channel 102. This allows the heat exchange area between the liquid cooling channel 101 and the battery module 30 to remain close to that between the direct cooling channel 102 and the battery module 30 during heat exchange operations. When the direct cooling channel 102 and the battery module 30 undergo direct cooling heat exchange, the liquid cooling medium in the liquid cooling channel 101 can... The liquid cooling medium circulates between various locations in the battery module 30, thereby allowing the direct cooling channel 102 to exchange heat with the battery module 30. During this process, the heat at various locations in the battery module 30 is transferred throughout the heat exchange area of ​​the entire battery module 30 via the liquid cooling medium. This causes the temperature of various parts of the battery module 30 to gradually approach uniformity under the heat transfer effect of the liquid cooling medium, resulting in a more uniform temperature distribution in the battery module 30. This allows the heat exchange component 10 to effectively equalize the temperature of the battery module 30.

[0043] In this embodiment, multiple liquid cooling channels 101 and multiple flow channels 1021 are arranged in an alternating manner, so that the liquid cooling channels 101 can cover all parts of the battery module 30 relatively completely. This allows the liquid cooling channels 101 to stably heat the battery module 30 when the battery pack 100 is at low temperatures, thereby giving the battery pack 100 a better heating effect. For example, the number of liquid cooling channels 101 can be two, three, four, etc., and the direct cooling flow section can be provided with two, three, four, etc.

[0044] According to the embodiment of the present invention, the heat exchange assembly 10 is provided with a liquid cooling channel 101 and a direct cooling channel 102. The liquid cooling channel 101 extends along a first direction, and the channel portion 1021 of the direct cooling channel 102 extends along the first direction. The multiple liquid cooling channels 101 and multiple channel portions 1021 are arranged alternately in a second direction, so that the heat exchange assembly 10 can well meet the heat exchange needs of the battery pack 100, and the heat exchange component can play a good role in uniformly distributing the temperature of the battery pack 100. This makes the temperature distribution inside the battery pack 100 more uniform, and makes the battery pack 100 more stable and reliable in operation, with better performance.

[0045] In some embodiments of this utility model, reference is made to Figure 3 and Figure 5 As shown, the liquid cooling channel 101 may be provided with a first end and a second end, one of the first end and the second end forming a liquid inlet and the other forming a liquid outlet. The heat exchange assembly 10 also includes a bridging member 12, which is connected to the first end and the second end of two adjacent liquid cooling channels 101 to make the multiple liquid cooling channels 101 connected.

[0046] In this embodiment, the liquid cooling channel 101 is provided with a first end and a second end, which has a simple structure and facilitates the inflow and outflow of the liquid cooling medium. In this embodiment, a bridging member 12 is provided, which is connected to the first end and the second end of two adjacent liquid cooling channels 101, so that multiple liquid cooling channels 101 are connected. This avoids the need for each liquid cooling channel 101 to be provided with an inlet and outlet for connection to an external liquid supply device, making it more convenient and easier to assemble the heat exchange component 10 in the battery pack 100.

[0047] In this embodiment, adjacent liquid cooling channels 101 refer to two liquid cooling channels 101 separated by a channel portion 1021, and there are no other liquid cooling channels 101 between the two liquid cooling channels 101 in the second direction.

[0048] In one embodiment of this utility model, reference is made to Figure 3 and Figure 5 As shown, in the second direction, the liquid inlet ends of the two outermost liquid cooling channels 101 are formed as first liquid inlets, and the crossover member 12 located in the middle is provided with a first liquid outlet. Alternatively, in the second direction, each liquid cooling channel 101 is connected in series. And / or, the first liquid inlet and multiple crossover members 12 may be located on the same side of the liquid cooling channel 101 in the first direction.

[0049] The first ends of the two outermost liquid cooling channels 101 form first liquid inlets, so that when the liquid cooling channel 101 is performing heat exchange, the liquid cooling medium can flow into the liquid cooling channel 101 simultaneously from the two first liquid inlets on both sides of the heat exchange component 10 in the second direction. The liquid cooling medium flows in the liquid cooling channel 101 and flows through the bridging member 12 to the adjacent liquid cooling channel 101. Finally, the liquid cooling medium after heat exchange flows out from the first liquid outlet of the middle bridging member 12, so that the liquid cooling medium continuously circulates in multiple liquid cooling channels 101.

[0050] In this embodiment, multiple liquid cooling channels 101 cooperate with the jumper 12 to form two first liquid inlets, so that the liquid cooling medium can flow through the multiple liquid cooling channels 101 relatively quickly, thereby greatly improving the liquid cooling heat exchange efficiency of the heat exchange component 10.

[0051] In this embodiment, in the second direction, each liquid cooling channel 101 is connected in series, which is simple in structure and allows the liquid cooling medium to flow through each liquid cooling channel in sequence. As a result, when the heat exchange component 10 performs heat exchange operation on the battery pack 100, the heat can be stably transferred and exchanged in each liquid cooling channel 101 with the flow of the liquid cooling medium, which well meets the heat exchange needs of the heat exchange component 10.

[0052] In one embodiment of this utility model, reference is made to Figure 3 and Figure 5 As shown, the first liquid inlet and the plurality of jumpers 12 can be located on the same side of the liquid cooling channel 101 in the first direction.

[0053] In this embodiment, the first liquid inlet and multiple jumpers 12 can be located on the same side of the liquid cooling channel 101 in the first direction. The structure is simple, and the first liquid inlet and the second liquid inlet can be located on the same side of the heat exchange assembly 10 in the first direction. This makes it easier to assemble the liquid cooling channel 101 of the heat exchange assembly 10 with the external liquid supply equipment. The components assembled with the first liquid inlet and the first liquid outlet can be arranged more compactly on the same side of the heat exchange assembly 10. This makes it easier and more reasonable to assemble the heat exchange assembly 10 with the battery module 30 in the battery pack 100.

[0054] In one embodiment of this utility model, reference is made to Figure 3 and Figure 5 As shown, in the second direction, the liquid inlet ends of the two outermost liquid cooling channels 101 are formed as first liquid inlets, and the crossover member 12 located in the middle is provided with a first liquid outlet. Alternatively, in the second direction, each liquid cooling channel 101 is connected in series. The first liquid inlet and multiple crossover members 12 can be located on the same side of the liquid cooling channel 101 in the first direction.

[0055] In this embodiment, multiple liquid cooling channels 101 are connected in series via jumpers 12. The two outermost liquid cooling channels 101 form a first liquid inlet at their inlet ends, and the jumpers 12 in the middle are provided with a first liquid outlet. The first liquid inlet and the multiple jumpers 12 are located on the same side of the liquid cooling channels 101 in the first direction. The structure is simple, which makes the heat exchange assembly 10 easier to assemble and allows the heat exchange efficiency of the liquid cooling channels 101 to be higher when the heat exchange assembly 10 is performing heat exchange operations.

[0056] For example, the bridging member 12 and the first liquid inlet are arranged on the same side of the liquid cooling channel 101 in the first direction. The first end and the second end of the liquid cooling channel 101 can be arranged on the same side of the liquid cooling channel 101 in the first direction to meet the arrangement requirements of the bridging member 12 and the first liquid inlet. After the liquid cooling medium enters the liquid cooling channel 101 from the liquid inlet end, it flows along the first direction to the other side of the liquid cooling channel 101 in the first direction. The liquid cooling medium then flows along the first direction to the side with the bridging member 12. The liquid cooling medium flows out from the liquid outlet end into the bridging member 12.

[0057] Optionally, in the second direction, the inlet end of one of the two outermost liquid cooling channels 101 can be formed as the first liquid inlet and the outlet end of the other can be formed as the first liquid outlet. The middle bridging member 12 may not have an outlet structure, so that the multiple liquid cooling channels 101 and the multiple bridging members 12 can cooperate to form a single-inlet and single-outlet channel structure. The structure is simpler, making it more convenient to assemble and cooperate the heat exchange component 10 with the external liquid cooling equipment, and the arrangement is easier. It can also better meet the usage needs of the heat exchange component 10.

[0058] In one embodiment of the present invention, Figure 3 As shown, in the second direction, the two outermost liquid cooling channels 101 can be located outside the channel portion 1021. This allows the liquid cooling channels 101 to better cover the outer part of the battery module 30 in the second direction after the heat exchange assembly 10 is assembled with the battery module 30. This enables the outer battery cells to receive better heating when the battery module 30 is heated, thus offsetting the larger heat loss of the outer battery cells and improving the temperature uniformity of the heat exchange assembly 10 on the battery module 30.

[0059] In one embodiment of the present invention, Figure 2 As shown, the heat exchange assembly 10 may include a heat exchange plate 11, which includes a flow channel plate 111 and a cover plate 112. The flow channel plate 111 has a flow channel groove, and the cover plate 112 covers the flow channel groove and cooperates with the flow channel plate 111 to form a liquid cooling flow channel 101 and a direct cooling flow channel 102. The bridging member 12 is fixed to the cover plate 112.

[0060] In this embodiment, the heat exchange assembly 10 includes a heat exchange plate 11, which includes a flow channel plate 111 and a cover plate 112. The flow channel plate 111 and the cover plate 112 cooperate to form a liquid cooling flow channel 101 and a direct cooling flow channel 102. The structure is simple. The non-flow channel structure of the cover plate 112 and the flow channel plate 111 of the heat exchange plate 11 can transfer the heat of the medium in the direct cooling flow channel 102 and the liquid cooling flow channel 101, thereby making the heat exchange assembly 10 have better temperature uniformity when performing heat exchange operations on the battery module 30.

[0061] In this embodiment, the jumper 12 is fixed on the cover plate 112. The structure is simple and the arrangement is reasonable. It can avoid the influence of the arrangement of the direct cooling channel 102 when designing and laying out multiple liquid cooling channels 101 and direct cooling channels 102 in the heat exchange plate 11, making it more convenient to arrange the liquid cooling channels 101 and direct cooling channels 102 on the heat exchange plate 11.

[0062] In some examples within this utility model, references Figure 2 and Figure 5 As shown, the first end and the second end can be provided with a first opening, the jumper 12 can be provided with a flow cavity and a second opening communicating with the flow cavity, and the cover plate 112 can be provided with a through hole corresponding to the first end and the second end. The first end and the second end can be communicated with the flow cavity through the first opening, the second opening and the through hole respectively.

[0063] In this embodiment, the jumper 12 is provided with a flow cavity and a second opening. A first opening is provided at both the first and second ends. The cover plate 112 is provided with a through hole communicating with the first and second openings. This allows the liquid cooling medium in the liquid cooling channel 101 to enter the flow cavity through the first opening, the through hole, and the second opening, and then flow into the adjacent liquid cooling channel 101. The structure is simple and can well meet the flow requirements of the liquid cooling medium in liquid cooling heat exchange. Optionally, the jumper 12 can be a jumper block, and the jumper 12 is welded and fixed to the cover plate 112.

[0064] In some embodiments of this utility model, such as Figure 3 As shown, the liquid cooling channel 101 may include a plurality of first channels 1011, which are arranged and connected in a second direction.

[0065] In this embodiment, the liquid cooling channel 101 is provided with multiple first channels 1011 arranged and connected in the second direction. The structure is simple and can increase the heat exchange area between each liquid cooling channel 101 and the battery module 30, so that the liquid cooling channel 101 can achieve a good heat exchange effect. For example, the number of first channels 1011 can be two, three, four, etc., and the number of first channels 1011 in the liquid cooling channel 101 can be reasonably arranged according to needs.

[0066] In some embodiments of this utility model, such as Figure 3 As shown, the direct cooling channel 102 may further include: a connecting channel 1022, an inlet channel 1023, and an outlet channel 1024, with multiple channel portions 1021 connected through the connecting channel 1022; in the second direction, the inlet channel 1023 is connected to the two outermost channel portions 1021, and one end of the inlet channel 1023 away from the channel portion 1021 forms a second inlet; in the second direction, the outlet channel 1024 is connected to the middle channel portion 1021, and one end of the outlet channel 1024 away from the channel portion 1021 forms a second outlet.

[0067] In this embodiment, the direct cooling channel 102 is provided with a connecting channel 1022 that communicates with multiple channel sections 1021. The structure is simple, allowing the multiple channel sections 1021 to form an integral direct cooling channel 102, meeting the usage requirements of the direct cooling channel 102. The direct cooling channel 102 is provided with two liquid inlet channels 1023 connected to the two outermost channel sections 1021 in the second direction to form a second liquid inlet, and a liquid outlet channel 1024 connected to the middle channel section 1021 to form a second liquid outlet. This results in a two-inlet, one-outlet channel structure for the direct cooling channel 102, enabling more efficient cooling of the battery module 30 and thus improving the cooling and heat exchange effect of the heat exchange component 10.

[0068] In this embodiment, the inlet channel 1023 and the outlet channel 1024 are only represented as flow channel structures through which fluids can flow. For example, fluids such as liquids, gases, or gas-liquid mixtures can flow in the inlet channel 1023 and the outlet channel 1024. Correspondingly, liquids, gases, or gas-liquid mixtures can also flow in from the second inlet and flow out from the second outlet.

[0069] In one embodiment of the present invention, Figure 3 As shown, the flow channel 1021 may include a plurality of second flow channels 10211, which are arranged and connected in a second direction.

[0070] In this embodiment, the flow channel section 1021 includes a plurality of second flow channels 10211, which are arranged and connected in the second direction. The structure is simple and allows each flow channel section 1021 to have a large heat exchange area with the battery module 30, enabling the direct cooling flow channel 102 to achieve a good heat exchange effect. For example, the number of second flow channels 10211 can be two, three, four, etc., and the number of second flow channels 10211 in the flow channel section 1021 can be reasonably arranged according to needs.

[0071] In one embodiment of the present invention, Figure 3 As shown, the inlet channel 1023 and the outlet channel 1024 can be located on the same side of the channel section 1021 in the first direction, and the connecting channel 1022 can be located on the other side of the channel section 1021.

[0072] In this embodiment, the inlet channel 1023 and the outlet channel 1024 are located on the same side of the channel section 1021 in the first direction, which makes it easier to assemble the direct cooling channel 102 of the heat exchange assembly 10 with the external direct cooling equipment. This allows the components assembled with the second inlet and the second outlet to be arranged more compactly on the same side of the heat exchange assembly 10, thereby making it easier and more reasonable to assemble the heat exchange assembly 10 and the battery module 30 within the battery pack 100.

[0073] In this embodiment, the connecting channel 1022 is set on the other side of the channel section 1021. The structure is simple and the arrangement is reasonable, which meets the need for multiple channel sections 1021 to be connected and to carry out direct cooling operation.

[0074] In some examples of this utility model, references Figure 3 and Figure 5As shown, the inlet channel 1023, the outlet channel 1024, the bridging member 12, and the first inlet can be located on the same side of the heat exchange assembly 10 in the first direction. This further reduces the difficulty of arranging the heat exchange assembly 10 with the liquid supply equipment in the battery pack 100, making it easier and more convenient to assemble the heat exchange assembly 10 in the battery pack 100. The inlet channel 1023, the outlet channel 1024, the bridging member 12, and the first inlet can be located on the same side of the heat exchange assembly 10 in the first direction, so that the connecting channel 1022 can be arranged separately from the bridging member 12, the first inlet, and the first outlet, thereby reducing the probability of interference between the direct cooling channel 102 and the liquid cooling channel 101 during arrangement, making the design and manufacture of the heat exchange assembly 10 easier and more convenient.

[0075] In one example of this utility model, such as Figure 2 and Figure 5 As shown, the heat exchange assembly 10 may also include a direct cooling connector 13, which is connected to the second liquid inlet and the second liquid outlet. This facilitates the assembly and connection of the direct cooling channel 102 with external direct cooling equipment, and allows the second liquid inlet and the second liquid outlet to be easily assembled through the direct cooling connector 13. This results in good integration and makes it easier to assemble and arrange the heat exchange assembly 10 in the battery pack 100.

[0076] In some embodiments of this utility model, the total flow area of ​​the liquid cooling channel 101 can account for 5%-95% of the total flow area of ​​the liquid cooling channel 101 and the direct cooling channel 102, and the total flow area of ​​the direct cooling channel 102 can account for 5%-95% of the total flow area of ​​the liquid cooling channel 101 and the direct cooling channel 102.

[0077] In this embodiment, the total flow area of ​​the liquid cooling channel 101 can be set to be between 5% and 95% of the total flow area of ​​the liquid cooling channel 101 and the direct cooling channel 102. The total flow area of ​​the direct cooling channel 102 can also be between 5% and 95% of the total flow area of ​​the liquid cooling channel 101 and the direct cooling channel 102. This allows the heat exchange component 10 to be designed and manufactured so that the ratio of the heat exchange areas of the direct cooling channel 102 and the liquid cooling channel 101 to the battery module 30 can be flexibly and conveniently adjusted as needed. This enables the heat exchange component 10 to better balance the heat exchange effect of heating and cooling, and to provide the battery pack 100 with a good heat exchange effect and temperature uniformity, thus better meeting the usage needs of the battery pack 100.

[0078] In some embodiments of this utility model, reference is made to Figure 1 As shown, the heat exchange assembly 10 may include a heat exchange plate 11, and the number of heat exchange plates 11 is one. The heat exchange plate 11 forms a liquid cooling channel 101 and a direct cooling channel 102.

[0079] In this embodiment, the heat exchange assembly 10 is provided with a heat exchange plate 11, on which a liquid cooling channel 101 and a direct cooling channel 102 are formed. It has good integration, so that the heat exchange plate 11 can perform both direct cooling and liquid cooling heat exchange functions on the battery pack 100 as needed. This reduces the number of components in the heat exchange assembly 10, making it more convenient to assemble the heat exchange assembly 10 in the battery pack 100.

[0080] In some embodiments of this utility model, the heat exchange assembly 10 may include two heat exchange plates 11. One of the two heat exchange plates 11 forms a liquid cooling channel 101 and the other forms a direct cooling channel 102. The two heat exchange plates 11 are respectively arranged on the battery module 30 of the battery pack 100 in a third direction (e.g., Figure 1 On both sides of the vertical direction shown, the third direction intersects with the second and first directions in pairs.

[0081] In this embodiment, the heat exchange component 10 is provided with two heat exchange plates 11. The two heat exchange plates 11 are respectively provided with a liquid cooling channel 101 and a direct cooling channel 102. The two heat exchange plates 11 can cooperate to realize direct cooling heat exchange and liquid cooling heat exchange for the battery module 30. The structure is simple and easy to process.

[0082] The following will refer to Figures 1-5 A battery pack 100 according to a specific embodiment of the present invention is described.

[0083] like Figures 1-5 As shown, the battery pack 100 includes a housing 20, a battery module 30, and a heat exchange assembly 10. The housing 20 has a receiving cavity 201, in which the battery module 30 and the heat exchange assembly 10 are both disposed.

[0084] The heat exchange assembly 10 includes a heat exchange plate 11 and a bridging member 12. The heat exchange plate 11 includes a flow channel plate 111 and a cover plate 112. The flow channel plate 111 forms a flow channel groove. The cover plate 112 covers the flow channel groove and cooperates with the flow channel plate 111 to form a liquid cooling flow channel 101 and a direct cooling flow channel 102. The bridging member 12 is a bridging plate. There are three bridging members 12. The three bridging members 12 are arranged on the side of the cover plate 112 away from the flow channel plate 111 and are welded and fixed to the cover plate 112. The bridging member 12 may be provided with a welding flange to facilitate welding connection with the cover plate 112.

[0085] The liquid cooling channels 101 extend along a first direction and there are four of them. The four liquid cooling channels 101 are arranged at intervals in a second direction. Each liquid cooling channel 101 includes a plurality of first channels 1011 extending along the first direction. The plurality of first channels 1011 in each liquid cooling channel 101 are arranged and connected in the second direction. Specifically, the two outermost liquid cooling channels 101 in the second direction are each provided with two first channels 1011, and the two inner liquid cooling channels 101 are each provided with three first channels 1011. The two adjacent first channels 1011 are connected by a bridging member 12 to form a continuous channel structure. The bridging member 12 is arranged on one side of the liquid cooling channel 101 in the first direction.

[0086] The direct cooling channel 102 includes three channel sections 1021, a connecting channel 1022, a liquid inlet channel 1023, and a liquid outlet channel 1024. The three channel sections 1021 are respectively arranged in three empty positions formed between the four liquid cooling channels 101. The channel sections 1021 extend along a first direction. Each channel section 1021 includes a plurality of second channels 10211 extending along the first direction. The plurality of second channels 10211 in each channel section 1021 are arranged and connected in a second direction. There may be two connecting channels 1022, which are arranged on the other side of the liquid cooling channel 101 in the first direction. The connecting channels 1022 connect adjacent channel sections 1021 to form a continuous channel structure. There are two liquid inlet channels 1023, which are respectively connected to the two outermost channel sections 1021. The liquid outlet channel 1024 is connected to the middle channel section 1021.

[0087] In the heat exchange plate 11, the area where the liquid cooling channels 101 are arranged forms the liquid cooling channel 101 region, and the area where the direct cooling channels 102 are arranged forms the direct cooling channel 102 region. Thus, the liquid cooling channel 101 region and the direct cooling channel 102 region are arranged alternately. The area of ​​the liquid cooling channel 101 region and the area of ​​the direct cooling channel 102 region can be adjusted as needed by adjusting the heat exchange area of ​​the liquid cooling channel 101 and the direct cooling channel 102.

[0088] During battery pack 100 assembly, the cover plate 112 of the heat exchange plate 11 can be arranged facing the battery module 30. The portion with the bridging member 12 can be positioned on the outer side of the battery module 30 in the first direction to ensure stable and reliable contact between the cover plate 112 and the battery module 30. The heat exchange plate 11 and the battery module 30 can be connected and fixed via a thermally conductive component 40, which can be a thermally conductive structural adhesive. When the heat exchange plate 11 and battery module 30 are arranged, if there are multiple battery modules 30, each battery module 30 can have liquid cooling channels 101 and direct cooling channels 102 arranged at the contact points with the heat exchange plate 11, so that each battery module 30 can achieve good heat exchange and temperature uniformity during both cooling and heating operations.

[0089] When the battery pack 100 is cooled, the direct cooling channel 102 and the liquid cooling channel 101 can operate independently or in conjunction. For example, when the cooling demand of the battery pack 100 is low, the liquid cooling medium in the liquid cooling channel 101 can be directly circulated for heat exchange and cooling, such as by introducing a coolant at a lower temperature. In this case, the liquid cooling equipment can simply circulate, thereby reducing the overall vehicle energy consumption. When the cooling demand increases, the heat exchange plate 11 performs direct cooling heat exchange through the direct cooling channel 102. The direct cooling channel 102 can be circulated with coolant for cooling, improving cooling efficiency to meet the cooling requirements. During this process, when the temperature difference within the battery pack 100 is large, such as when a set threshold is reached, the liquid cooling medium in the liquid cooling channel 101 can circulate to equalize the temperature, balancing and reducing the temperature difference caused by direct cooling. When the cooling demand further increases, the liquid cooling equipment and the direct cooling equipment can be turned on simultaneously, allowing the direct cooling channel 102 and the liquid cooling channel 101 of the heat exchange plate 11 to work together to exchange heat with the battery module 30.

[0090] When the battery pack 100 is heated, the liquid cooling equipment operates, so that the heat exchange plate 11 heats the battery module 30 through the flow channel of the liquid cooling medium in the liquid cooling channel 101. For example, the heating rate of the battery module 30 is greater than or equal to 0.6℃ / min, while the heating temperature difference is ≤5℃ to meet the temperature rise and uniformity requirements of the battery module 30.

[0091] In this embodiment, by setting a liquid cooling channel 101 and a direct cooling channel 102 in the heat exchange component 10, the battery pack 100 is heated through liquid cooling heat exchange at low temperatures, thereby enabling the battery pack 100 to charge faster. Due to the large heat capacity of the coolant, it can provide a longer-lasting heat preservation effect for the battery pack 100. At high temperatures, the battery pack 100 is cooled faster through direct cooling heat exchange, thus enabling the battery pack 100 to meet the need for charging in a shorter time. Liquid cooling can balance the temperature difference with direct cooling, making the temperature distribution inside the battery pack 100 more uniform during cooling. This ensures that the temperature difference of the battery pack 100 can always be controlled within an ideal range during the heat exchange process, making the operation of the battery pack 100 more stable and reliable, and improving the performance of the battery pack 100.

[0092] In another embodiment of this utility model, there can be two heat exchange plates 11. The two heat exchange plates 11 can be arranged on both sides of the battery module 30 respectively. Each heat exchange plate 11 can be provided with a liquid cooling channel 101 and a direct cooling channel 102. Alternatively, one heat exchange plate 11 can be provided with a liquid cooling channel 101 and the other with a direct cooling channel 102, so that the heat exchange assembly 10 of this embodiment can be arranged more flexibly as needed.

[0093] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0094] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0095] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0097] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange component, characterized in that, For use in a battery pack, the heat exchange assembly has a liquid-cooled flow channel (101) and a direct-cooled flow channel (102). The liquid-cooled flow channel (101) extends along a first direction and is multiple in number. The direct-cooled flow channel (102) includes multiple flow channel portions (1021) extending along the first direction. The multiple flow channel portions (1021) and the multiple liquid-cooled flow channels (101) are arranged alternately in a second direction, and the liquid-cooled flow channels (101) and the direct-cooled flow channels (102) are not connected. The second direction intersects with the first direction.

2. The heat exchange assembly according to claim 1, characterized in that, The liquid cooling channel (101) is provided with a first end and a second end, one of the first end and the second end forming a liquid inlet and the other forming a liquid outlet. The heat exchange assembly also includes a bridging member (12), which is connected to the first end and the second end of two adjacent liquid cooling channels (101) to make the plurality of liquid cooling channels (101) connected.

3. The heat exchange assembly according to claim 2, characterized in that, In the second direction, the liquid inlet ends of the two outermost liquid cooling channels (101) are formed as first liquid inlets, and the crossover member (12) located in the middle is provided with a first liquid outlet, or in the second direction, each of the liquid cooling channels (101) is connected in series; and / or, the first liquid inlet and the plurality of crossover members (12) are located on the same side of the liquid cooling channel (101) in the first direction.

4. The heat exchange assembly according to claim 2, characterized in that, The heat exchange assembly includes a heat exchange plate (11), which includes a flow channel plate (111) and a cover plate (112). The flow channel plate (111) has a flow channel groove, and the cover plate (112) covers the flow channel groove and cooperates with the flow channel plate (111) to form the liquid cooling flow channel (101) and the direct cooling flow channel (102). The jumper (12) is fixed to the cover plate (112).

5. The heat exchange assembly according to any one of claims 1-4, characterized in that, The liquid cooling channel (101) includes a plurality of first channels (1011), which are arranged and connected in the second direction.

6. The heat exchange assembly according to any one of claims 1-4, characterized in that, The direct cooling channel (102) also includes: A connecting channel (1022) is provided, through which a plurality of the channel portions (1021) are connected; In the second direction, the liquid inlet channel (1023) is connected to the two outermost channel portions (1021), and the end of the liquid inlet channel (1023) facing away from the channel portion (1021) is formed as a second liquid inlet. In the second direction, the liquid outlet channel (1024) is connected to the middle channel portion (1021), and the end of the liquid outlet channel (1024) opposite to the channel portion (1021) is formed as a second liquid outlet.

7. The heat exchange assembly according to claim 6, characterized in that, The flow channel section (1021) includes a plurality of second flow channels (10211), which are arranged and connected in the second direction.

8. The heat exchange assembly according to claim 1, characterized in that, The total flow area of ​​the liquid cooling channel (101) can be 5%-95% of the total flow area of ​​the liquid cooling channel (101) and the direct cooling channel (102), and the total flow area of ​​the direct cooling channel (102) can be 5%-95% of the total flow area of ​​the liquid cooling channel (101) and the direct cooling channel (102).

9. The heat exchange assembly according to claim 1, characterized in that, The heat exchange assembly includes a heat exchange plate (11), the number of which is one, the heat exchange plate (11) forming the liquid cooling channel (101) and the direct cooling channel (102), or the number of which is two, one of which forms the liquid cooling channel (101) and the other forms the direct cooling channel (102), the two heat exchange plates (11) are respectively arranged on both sides of the battery module (30) of the battery pack in a third direction, the third direction intersecting the second direction and the first direction in pairs.

10. A battery pack, characterized in that, include: The housing (20) has a receiving cavity (201); The battery module (30) and the heat exchange component according to any one of claims 1-9 are both disposed within the receiving cavity (201).

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