Battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery pack and electric equipment, and relates to the technical field of energy storage. The battery comprises a battery body, a supporting piece and a heat exchange piece, the supporting piece comprises at least two containing cavities, and the at least two containing cavities are arranged in the first direction; a battery is arranged in each accommodating cavity; the heat exchange piece is arranged on the supporting piece and exchanges heat with the battery; the heat exchange piece extends in the first direction and is provided with at least two containing cavities in a crossing mode. In the first direction, the two ends of the heat exchange piece are arranged across the two containing cavities on the outermost side respectively. According to the embodiment of the invention, the assembly complexity of the heat exchange piece and the supporting piece can be reduced, and the assembly efficiency of the battery pack is improved; in addition, the structure compactness of the battery pack can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of energy storage, and in particular, to a battery pack and an electrical device. Background Art

[0002] A battery pack is a device that converts chemical energy into electrical energy and is widely used in fields such as new energy vehicles and energy storage power stations. A battery pack usually includes a housing and a plurality of battery modules disposed inside the housing. When the plurality of battery modules are working, a large amount of heat is generated, and usually a heat exchange member is disposed inside the housing to dissipate heat from the battery modules.

[0003] However, in the related art, the layout between the heat exchange member and the housing is unreasonable, which increases the assembly complexity between the heat exchange member and the housing and reduces the structural compactness of the battery pack. Summary of the Utility Model

[0004] In view of the above problems, the embodiments of the present application provide a battery pack and an electrical device, which can reduce the assembly complexity between the heat exchange member and the support member and improve the structural compactness of the battery pack.

[0005] To achieve the above object, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the embodiments of the present application provides a battery pack, which includes:

[0007] A battery;

[0008] A support member, the support member includes at least two accommodation cavities, and the at least two accommodation cavities are arranged along a first direction; a battery is disposed in each of the accommodation cavities;

[0009] A heat exchange member, the heat exchange member is disposed on the support member and exchanges heat with the battery;

[0010] Wherein, the heat exchange member extends along the first direction and straddles the at least two accommodation cavities; along the first direction, two ends of the heat exchange member respectively straddle the outermost two of the accommodation cavities.

[0011] In a possible implementation manner, the heat exchange member includes a heat exchange flow channel, and the heat exchange flow channel extends along the first direction and straddles the at least two accommodation cavities.

[0012] In a possible implementation manner, the at least two accommodation cavities include a first accommodation cavity and a second accommodation cavity;

[0013] In the first direction, one end of the heat exchange member straddles the first accommodation cavity, and the other end of the heat exchange member straddles the second accommodation cavity.

[0014] In a possible implementation, a length of the heat exchange channel spanning the first accommodating chamber is equal to a length of the heat exchange channel spanning the second accommodating chamber.

[0015] In a possible implementation, there are multiple heat exchange channels, which are arranged along the second direction and are independent of each other; each heat exchange channel exchanges heat with each battery;

[0016] The second direction intersects the first direction.

[0017] In a possible implementation, each of the heat exchange channels includes a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is independent of the second heat exchange channel, and is located on at least one side of the second heat exchange channel;

[0018] Along the second direction, each of the batteries includes a first heating area and a second heating area, wherein the first heating area is located on at least one side of the second heating area; and the heat generated by the first heating area is greater than the heat generated by the second heating area;

[0019] The first heat exchange channel is used for exchanging heat with the first heating area, and the second heat exchange channel is used for exchanging heat with the second heating area.

[0020] In a possible implementation, the number of the first heat exchange channels is two, and the two first heat exchange channels are respectively arranged on both sides of the second heat exchange channel;

[0021] The number of the first heating zones is two, and the two first heating zones are respectively arranged on both sides of the second heating zone.

[0022] In a possible implementation, the heat exchange element further includes a first converging flow channel, a second converging flow channel and a bridging flow channel;

[0023] In the first direction, among the first converging flow channel and the second converging flow channel located on the same side of the heat exchange flow channel, the first converging flow channel is located on a side of the second converging flow channel away from the heat exchange flow channel;

[0024] The first converging flow channel is connected to the first heat exchange flow channel through the bridging flow channel, and the second converging flow channel is connected to the second heat exchange flow channel;

[0025] Alternatively, in the first direction and in the first converging flow channel and in the second converging flow channel located on the same side of the heat exchange flow channel, the second converging flow channel is located on a side of the first converging flow channel away from the heat exchange flow channel,

[0026] The second confluence flow channel communicates with the second heat exchange flow channel through the bridging flow channel, and the second confluence flow channel communicates with the second heat exchange flow channel.

[0027] In a possible implementation, a plurality of the first heat exchange flow channels arranged along the second direction are connected in parallel to the first confluence flow channel;

[0028] A plurality of the first heat exchange flow channels arranged along the second direction are connected in parallel to the second confluence flow channel.

[0029] In a possible implementation, the first confluence flow channel and the second confluence flow channel are arranged on the same layer and are arranged on a different layer from the bridging flow channel.

[0030] In a possible implementation, the heat exchange member includes a stacked flow channel plate and a temperature equalizing plate, and the heat exchange flow channel, the first confluence flow channel and the second confluence flow channel are arranged between the flow channel plate and the temperature equalizing plate.

[0031] In a possible implementation, the support member includes a side beam, and the side beam extends along the second direction;

[0032] The orthographic projections of the first confluence flow channel and the second confluence flow channel on the support member cover at least a part of the side beam.

[0033] In a possible implementation, the side beam is provided with a recessed area; the recessed area forms the bridging flow channel, or the recessed area at least accommodates a part of the bridging flow channel.

[0034] In a possible implementation, the heat exchange member further includes a bridging member, and the bridging member is arranged on the side of the temperature equalizing plate facing the support member and encloses with the temperature equalizing plate to form the bridging flow channel;

[0035] The temperature equalizing plate includes a first communication hole and a second communication hole arranged at intervals;

[0036] One end of the bridging flow channel communicates with the first confluence flow channel through the first communication hole, and the other end of the bridging flow channel communicates with the first heat exchange flow channel through the second communication hole.

[0037] In a possible implementation, the first confluence flow channel includes a first sub-confluence flow channel, the second confluence flow channel includes a second sub-confluence flow channel, and the bridging flow channel includes a first bridging flow channel;

[0038] The first sub-confluence flow channel and the second sub-confluence flow channel are located on the first side of the heat exchange flow channel;

[0039] The first sub-confluence flow channel is communicated with the first heat exchange flow channel through the first bridging flow channel; the second sub-confluence flow channel is communicated with the second heat exchange flow channel;

[0040] And / or, the first confluence flow channel further includes a third sub-confluence flow channel, the second confluence flow channel includes a fourth sub-confluence flow channel, and the bridging flow channel includes a second bridging flow channel;

[0041] The third sub-confluence flow channel and the fourth sub-confluence flow channel are located on the second side of the heat exchange flow channel; the third sub-confluence flow channel is communicated with the second heat exchange flow channel through the second bridging flow channel.

[0042] In a possible implementation manner, the heat exchange member further includes a first joint, a second joint, a third joint, and a fourth joint;

[0043] The first sub-confluence flow channel is communicated with the first joint, and the third sub-confluence flow channel is communicated with the second joint;

[0044] The second sub-confluence flow channel is communicated with the third joint; the fourth sub-confluence flow channel is communicated with the fourth joint.

[0045] In a possible implementation manner, in the second direction, the first joint, the second joint, the third joint, and the fourth joint are located on the same side of the heat exchange flow channel.

[0046] In a possible implementation manner, the heat exchange member further includes a first liquid return confluence channel and a second liquid return confluence channel; the first liquid return confluence channel and the second liquid return confluence channel are arranged on a different layer from the heat exchange flow channel;

[0047] The second sub-confluence flow channel is communicated with the second joint through the first liquid return confluence channel;

[0048] The third sub-confluence flow channel is communicated with the fourth joint through the second liquid return confluence channel.

[0049] In a possible implementation manner, the support member further includes an intermediate beam, the intermediate beam extends along the second direction, and the intermediate beam is located between two side beams;

[0050] Both the first liquid return confluence channel and the second liquid return confluence channel are formed on the intermediate beam.

[0051] In a possible implementation manner, two grooves are arranged on the intermediate beam, and the two grooves extend along the second direction;

[0052] The two grooves respectively constitute the first liquid return confluence channel and the second liquid return confluence channel, or the grooves accommodate the first liquid return confluence channel and the second liquid return confluence channel.

[0053] In a possible implementation, the support member further includes a plurality of longitudinal beams extending in the first direction, and the plurality of longitudinal beams are arranged at intervals in the second direction to divide each accommodation cavity into a plurality of sub-accommodation cavities, and each sub-accommodation cavity is correspondingly provided with a battery;

[0054] At least two of the batteries arranged in the first direction correspond to one heat exchange flow channel.

[0055] In a possible implementation, the number of the first heat exchange flow channels is plural; the first converging flow channel is communicated with the corresponding first heat exchange flow channel through the bridging flow channel.

[0056] A second aspect of the embodiments of the present application provides an electrical device, including an electrical device and the battery pack described in the first aspect, and the battery pack is used to provide electrical energy for the electrical device.

[0057] In the battery pack and the electrical device provided by the embodiments of the present application, by arranging the heat exchange member on the support member; the heat exchange member extends in the first direction and straddles two accommodation cavities, so that both ends of the heat exchange member straddle the two outermost accommodation cavities respectively. In this embodiment, one heat exchange member covers all the accommodation cavities, which can reduce the number of heat exchange members. Thus, on the one hand, the assembly complexity of the heat exchange member and the support member can be reduced, and the assembly efficiency of the battery pack can be improved. On the other hand, the manufacturing cost of the heat exchange member can be reduced, and further the manufacturing cost of the battery pack can be reduced.

[0058] In addition, in the first direction, both ends of the heat exchange member can effectively cover all the accommodation cavities, which can ensure that the temperature distribution of the heat exchange member is more uniform, and further avoid local overheating or overcooling of the battery, and improve the performance of the battery.

[0059] In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features of these technical solutions described above, other technical problems that the battery pack and the electrical device provided by the embodiments of the present application can solve, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. Description of the Drawings

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0061] Figure 1 Schematic diagram of the battery pack provided by the embodiment of the present application;

[0062] Figure 2 Schematic diagram of the support provided by the embodiment of the present application;

[0063] Figure 3 Schematic diagram of the heat exchanger provided by the embodiment of the present application;

[0064] Figure 4 is Figure 3 Enlarged schematic diagram of area A in

[0065] Figure 5 is Figure 3 Enlarged schematic diagram of area B in

[0066] Figure 6 Schematic diagram of the bus bar channel and the bridging member provided by the embodiment of the present application;

[0067] Figure 7 Partial schematic diagram of the heat exchanger provided by the embodiment of the present application;

[0068] Figure 8 Distribution diagram of the batteries provided by the embodiment of the present application.

[0069] Explanation of reference numerals:

[0070] 100: Support; 110: Accommodation cavity; 111: First accommodation cavity; 112: Second accommodation cavity; 120: Side beam; 130: Intermediate beam; 140: Longitudinal beam;

[0071] 200: Battery; 210: First heat generation area; 220: Second heat generation area;

[0072] 300: Heat exchanger; 310: Heat exchange channel; 311: First heat exchange channel; 312: Second heat exchange channel; 320: First bus bar channel; 321: First sub-bus bar channel; 322: Third sub-bus bar channel; 330: Second bus bar channel; 331: Second sub-bus bar channel; 332: Fourth sub-bus bar channel; 340: Bridging channel; 341: First bridging channel; 342: Second bridging channel; 351: First joint; 352: Second joint; 353: Third joint; 354: Fourth joint; 370: First liquid return bus bar channel; 380: Second liquid return bus bar channel; 391: Isothermal plate; 392: Channel plate;

[0073] 400: Bridging member; 410: Main pipe; 420: Connecting pipe. Detailed implementation manners

[0074] As described in the background art, in the related art, a partition is usually provided inside the housing to divide the inner cavity of the housing into at least two accommodating cavities, and a battery is provided in each accommodating cavity. In order to reduce the heat of the battery, a heat exchange member is usually provided in each accommodating cavity, and the heat exchange member exchanges heat with the battery to reduce the heat of the battery. With such an arrangement, the number of heat exchange members matches the number of accommodating cavities. On the one hand, it increases the assembly complexity and manufacturing cost of the heat exchange members; on the other hand, it reduces the structural compactness of the heat exchange members and the housing, and thus reduces the structural compactness of the battery pack.

[0075] In view of the above technical problems, the embodiments of the present application provide a battery pack and an electrical device. By arranging the heat exchange member on the support member; the heat exchange member extends along the first direction and straddles two accommodating cavities, so that both ends of the heat exchange member straddle the two outermost accommodating cavities respectively. In this embodiment, one heat exchange member is used to cover all the accommodating cavities, which can reduce the number of heat exchange members. Thus, on the one hand, it can reduce the assembly complexity of the heat exchange members and the support member, and improve the assembly efficiency of the battery pack; on the other hand, it can reduce the manufacturing cost of the heat exchange members, and thus reduce the manufacturing cost of the battery pack.

[0076] In addition, in the first direction, both ends of the heat exchange member can effectively cover all the accommodating cavities, which can ensure that the temperature distribution of the heat exchange member is more uniform, and thus avoid local overheating or overcooling of the battery, and improve the performance of the battery.

[0077] In order to make the above objects, features, and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0078] Please refer to the attached Figure 1 and the attached Figure 2 , the embodiments of the present application provide a battery pack for supplying power to an electrical device.

[0079] Among them, the battery pack includes a battery 200, a support member 100, and a heat exchange member 300. The support member 100 serves as a support component of the battery pack for supporting the battery 200 and the heat exchange member 300; in addition, the support member 100 can also serve as a connection component to realize the installation between the battery pack and the target component. For example, when the battery pack is applied to a vehicle, the support member 100 can be installed on the vehicle body. The material of the support member 100 provided in this embodiment includes but is not limited to aluminum or steel.

[0080] The support member 100 includes at least two accommodating cavities 110, and the at least two accommodating cavities 110 are arranged in a first direction. A battery 200 is disposed in each accommodating cavity 110. Herein, in this embodiment, the support member 100 includes two accommodating cavities 110, three accommodating cavities 110, four accommodating cavities 110, or even more.

[0081] It should be understood that there are various choices for the definition of the first direction in this embodiment. For example, the first direction may be parallel to the horizontal direction, or may have a certain angle with the horizontal direction. In the attached Figure 1 figure shown, in one example, the first direction may be parallel to the X direction. In another example, the first direction may be parallel to the Y direction. In yet another example, the first direction may have a certain angle between the X direction and the Y direction.

[0082] In the following embodiments, it is assumed that the support member 100 includes two accommodating cavities 110, and the first direction is the width direction of the support member 100, that is, the Y direction in the attached Figure 1 figure, for example, for description.

[0083] The heat exchange member 300 is disposed on the support member 100 and exchanges heat with the battery 200. That is, the two ends of the heat exchange member 300 in the first direction are connected to the support member 100, and the heat exchange member 300 faces the battery 200 to exchange heat with the battery 200. In this embodiment, heat exchange can be understood as that the heat exchange member 300 can cool down the battery 200 or heat the battery 200. Specifically, the type of fluid flowing in the heat exchange member 300 can be freely selected according to the environment where the battery 200 is located. For example, when the heat exchange member 300 is used to cool down the battery 200, the fluid may include refrigerant, CO2, ethylene glycol, or water.

[0084] The heat exchange member 300 extends in the first direction and straddles at least two accommodating cavities 110; in the first direction, the two ends of the heat exchange member 300 respectively straddle the outermost two accommodating cavities 110. Herein, the straddling in this embodiment can be understood as that in the direction perpendicular to the support member 100, the heat exchange member 300 is disposed opposite to the accommodating cavity 110, that is, the orthographic projection of the heat exchange member 300 on the support member 100 covers at least two accommodating cavities 110. For example, when the number of accommodating cavities 110 is two, the orthographic projection of the heat exchange member 300 on the support member 100 covers two accommodating cavities 110. When the number of accommodating cavities 110 is three, the orthographic projection of the heat exchange member 300 on the support member 100 covers three accommodating cavities 110.

[0085] In this embodiment, a heat exchanger 300 is used to cover the entire accommodation cavity 110. Compared with the technical solution in which a heat exchanger 300 covers one accommodation cavity 110, the number of heat exchangers 300 can be reduced. In this way, on the one hand, the assembly complexity between the heat exchanger 300 and the support 100 is reduced, and the assembly efficiency of the battery pack is improved. On the other hand, the manufacturing cost of the heat exchanger 300 is reduced, and thus the manufacturing cost of the battery pack is reduced.

[0086] In addition, in the first direction, both ends of the heat exchanger 300 can effectively cover the entire accommodation cavity 110, which can ensure that the temperature distribution of the heat exchanger 300 is more uniform, thereby avoiding local overheating or overcooling of the battery 200 and improving the performance of the battery 200.

[0087] It should be noted that there are various choices for the type of the heat exchanger 300. For example, the heat exchanger 300 may include heat exchange fins or a liquid cooling plate. As a possible implementation manner, the heat exchanger 300 includes a heat exchange flow channel 310 that extends along the first direction and straddles at least two accommodation cavities 110. The heat exchange flow channel 310 is used for fluid circulation. During the circulation of the fluid in the heat exchange flow channel 310, heat exchange can be carried out with at least two batteries 200, and the cooling effect of the heat exchange flow channel 310 can be precisely controlled by adjusting parameters such as the flow rate and temperature of the fluid, so as to ensure that heat can be efficiently transferred from the battery 200 to the fluid, realizing more efficient thermal management.

[0088] The heat exchange flow channel 310 extends along the first direction and straddles at least two accommodation cavities 110, which is beneficial to ensuring that the orthographic projection of the heat exchange flow channel 310 on the support 100 covers the entire two accommodation cavities 110, thereby ensuring that the heat exchange flow channel 310 covers the batteries 200 located in each accommodation cavity 110 and improving the temperature balance of each region of the battery 200.

[0089] Please refer to the appendix Figure 3, in a possible implementation, at least two accommodating cavities 110 include a first accommodating cavity 111 and a second accommodating cavity 112; in a first direction, one end of the heat exchange member 300 straddles the first accommodating cavity 111, and the other end of the heat exchange member 300 straddles the second accommodating cavity 112. The orthographic projection of the heat exchange member 300 on the support member 100 simultaneously covers the first accommodating cavity 111 and the second accommodating cavity 112, so that the heat exchange flow channels 310 cover the batteries 200 located in the first accommodating cavity 111 and the second accommodating cavity 112 respectively, facilitating the use of one heat exchange member 300 to simultaneously exchange heat for two batteries 200 arranged along the first direction, avoiding using different heat exchange members 300 to exchange heat for the two batteries 200 respectively, thereby reducing the number of heat exchange members 300, further reducing the number of components of the battery pack, and reducing the complexity of manufacturing and assembly. In addition, using one heat exchange member 300 to simultaneously exchange heat for the two batteries 200 reduces the number of connection points between the heat exchange member 300 and the support member 100, improving the reliability and stability of the battery pack.

[0090] In this embodiment, the length of the heat exchange flow channel 310 straddling the first accommodating cavity 111 is equal to the length of the heat exchange flow channel 310 straddling the second accommodating cavity 112. It should be noted that the length in this embodiment can be understood as the distance of the fluid flow path. The length of the heat exchange flow channel 310 straddling the first accommodating cavity 111 being equal to the length of the heat exchange flow channel 310 straddling the second accommodating cavity 112 can ensure that the fluid flow paths in the first accommodating cavity 111 and the second accommodating cavity 112 are the same. In this way, it can ensure that the fluid flow speeds in the first accommodating cavity 111 and the second accommodating cavity 112 are consistent, avoiding uneven temperatures in the relative areas between the heat exchange member 300 and the first accommodating cavity 111, and between the heat exchange member 300 and the second accommodating cavity 112, thereby achieving a uniform heat exchange effect of the heat exchange member 300 and improving the working stability and service life of the battery 200.

[0091] It should be noted that the number of the heat exchange flow channels 310 in this embodiment can be one or multiple. Exemplarily, the number of the heat exchange flow channels 310 is multiple, and the multiple heat exchange flow channels 310 are arranged along a second direction and are independent of each other; each heat exchange flow channel 310 corresponds to exchanging heat with each battery 200. Among them, the second direction intersects with the first direction.

[0092] In view of the fact that the heat exchange flow channels 310 are independent of each other, for example, the heat exchange flow channels 310 are connected in parallel. Even if a certain heat exchange flow channel 310 fails, it will not affect the normal operation of other heat exchange flow channels 310, thereby improving the reliability and stability of the battery pack.

[0093] It should be understood that the heat generation amounts of different regions of the battery 200 are not equal. To ensure the temperature balance of each region of the battery 200, the heat exchange channels of the heat exchange member 300 can be matched with different regions of the battery 200 to improve the problem of uneven temperature of the battery 200.

[0094] Exemplarily, the battery 200 includes multiple heat generating regions with different heat generation amounts. Each heat exchange channel 310 includes multiple sub-heat exchange channels. That is, the number of heat generating regions can correspond to the number of sub-heat exchange channels, that is, the number of heat generating regions is equal to the number of sub-heat exchange channels. Each sub-heat exchange channel exchanges heat with each corresponding heat generating region respectively.

[0095] In this way, the multiple sub-heat exchange channels are independent of each other, and the flow rate of each sub-heat exchange channel can be designed and adjusted according to the specific heat exchange requirements of its corresponding heat generating region, so as to ensure that the temperature of each heat generating region can be effectively controlled. For example, for a heat generating region with a larger heat generation amount, a more efficient sub-heat exchange channel can be designed, and for a heat generating region with a smaller heat generation amount, a relatively simple sub-heat exchange channel can be designed, thereby optimizing the performance of the heat exchange member 300 and ensuring the temperature balance of each heat generating region of the battery 200. Among them, the layout of the heat exchange channel 310 and the heat generating regions of the battery 200 can be arranged according to the actual situation.

[0096] As a possible implementation manner, each heat exchange channel 310 includes a first heat exchange channel 311 and a second heat exchange channel 312. The first heat exchange channel 311 is independent of the second heat exchange channel 312 and is located on at least one side of the second heat exchange channel 312. In other words, in one example, the number of the first heat exchange channels 311 is one, and the first heat exchange channel 311 is located on one side of the second heat exchange channel 312; taking the Figure 4 shown orientation as an example, the first heat exchange channel 311 is located on the left or right side of the second heat exchange channel 312. In another example, the number of the first heat exchange channels 311 can also be two, and the two first heat exchange channels 311 are respectively located on both sides of the second heat exchange channel 312.

[0097] Please refer to the attached Figure 8 , along the second direction, the battery 200 includes a first heat generating region 210 and a second heat generating region 220. The first heat generating region 210 is located on at least one side of the second heat generating region 220; the heat generation amount of the first heat generating region 210 is greater than that of the second heat generating region 220. Among them, the number of the first heat generating regions 210 is two, and the two first heat generating regions 210 are respectively arranged on both sides of the second heat generating region 220.

[0098] In this embodiment, the first heating zone 210 corresponds to the first heat exchange flow channel 311 to facilitate heat exchange between the first heat exchange flow channel 311 and the first heating zone 210; the second heating zone 220 corresponds to the second heat exchange flow channel 312 to facilitate heat exchange between the second heat exchange flow channel 312 and the second heating zone 220. It should be noted that in this embodiment, the first heating zone 210 can be the area opposite to the battery terminal post, where the heat generation is relatively large, usually located at both ends of the battery pack in the second direction; the second heating zone 220 can be other areas of the battery except those opposite to the terminal posts, where the heat generation is relatively small, usually the middle area of the battery. Further, the battery terminal posts can be arranged on both sides along its length direction. At this time, the battery includes the first heating zones 210 on both sides and the second heating zone 220 in the middle. Among them, the two first heat exchange flow channels 311 exchange heat with the first heating zones 210, and the second heat exchange flow channel 312 exchanges heat with the second heating zone 220.

[0099] In this embodiment, the first heat exchange flow channel 311 exchanges heat with the first heating zone 210, and the second heat exchange flow channel 312 exchanges heat with the second heating zone 220, so as to utilize the independent control of the first heat exchange flow channel 311 and the second heat exchange flow channel 312, adopt different flow rate strategies, adjust the cooling capacity distribution of each heating zone, so that different heat exchange flow channels 310 have different heat exchange capabilities, and further reduce the temperature difference between the first heating zone 210 and the second heating zone 220, thereby reducing the temperature difference of the battery pack.

[0100] When the number of the first heat exchange flow channels 311 is two, the length of each first heat exchange flow channel 311 can be shortened, the pressure drop of the first heat exchange flow channel 311 can be reduced, the flow velocity of the fluid in the first heat exchange flow channel 311 can be balanced, the temperature difference along the first heat exchange flow channel 311 can be reduced, and the balance of the heat exchange capacity of the heat exchange member 300 can be improved.

[0101] Please continue to refer to the appendix Figure 3 , the heat exchange member 300 further includes a first confluence flow channel 320, a second confluence flow channel 330 and a bridging flow channel 340.

[0102] In the first confluence flow channel 320 and the second confluence flow channel 330 on the same side of the heat exchange flow channel 310 in the first direction, the first confluence flow channel 320 is located on the side of the second confluence flow channel 330 away from the heat exchange flow channel 310. Taking the orientation shown in the appendix Figure 3 as an example, the first confluence flow channel 320 and the second confluence flow channel 330 are located below the heat exchange flow channel 310, and the first confluence flow channel 320 is arranged below the second confluence flow channel 330.

[0103] The first confluence channel 320 is connected to the first heat exchange channel 311 through the bridge channel 340, and the second confluence channel 330 is connected to the second heat exchange channel 312. In this way, the first confluence channel 320 can be connected to the first heat exchange channel 311 without changing the setting position of the second confluence channel 330, ensuring that the fluid can flow into the first heat exchange channel 311, thereby enabling the first heat exchange channel 311 to have heat exchange capacity. In addition, the first confluence channel 320 is connected to the first heat exchange channel 311 through the bridge channel 340, which also makes the structure of the heat exchange element 300 more compact, helps save space, and is suitable for application scenarios that require efficient heat exchange but have limited space.

[0104] In addition, in other embodiments, in the first converging channel 320 and the second converging channel 330 that are in the first direction and located on the same side of the heat exchange channel 310, the second converging channel 330 is located on the side of the first converging channel 320 that is away from the heat exchange channel 310, and the second converging channel 330 is connected to the second heat exchange channel 312 through the bridging channel 340, and the first converging channel 320 is connected to the first heat exchange channel 311.

[0105] When the heat exchange flow channel 310 includes multiple ones, the multiple first heat exchange flow channels 311 arranged along the second direction are connected in parallel to the first converging flow channel 320; the multiple second heat exchange flow channels 312 arranged along the second direction are connected in parallel to the second converging flow channel 330. In this way, the multiple first heat exchange flow channels 311 are connected in parallel with each other, and the multiple second heat exchange flow channels 312 are connected in parallel with each other, which can help to evenly distribute the fluid between the multiple first heat exchange flow channels 311 and the multiple second heat exchange flow channels 312, avoiding the phenomenon of overheating or overcooling of a single first heat exchange flow channel 311 and a single second heat exchange flow channel 312, thereby achieving a more uniform temperature distribution.

[0106] Please continue to refer to the attached Figure 1 , the first converging flow channel 320 and the second converging flow channel 330 are arranged in the same layer, and are arranged in a different layer from the bridging flow channel 340. In other words, along the thickness direction of the support member 100, the first converging flow channel 320 and the bridging flow channel 340 are stacked. For example, the bridging flow channel 340 can be located below the first converging flow channel 320, or it can be located above the first converging flow channel 320. This three-dimensional layout allows the heat exchanger 300 to achieve a more complex flow channel design within a limited space, which is suitable for application scenarios that require efficient heat exchange but have limited space; in addition, the stacked design makes the structure of the heat exchanger 300 more compact, which helps to reduce the weight of the heat exchanger 300 and facilitates installation and transportation.

[0107] In one possible implementation, please refer to the attached Figure 1 The support member 100 includes a side beam 120, and the side beam 120 extends along the second direction.

[0108] The first confluence flow channel 320 and the second confluence flow channel 330 are generally the liquid inlet confluence flow channels or the liquid outlet confluence flow channels. The above-mentioned flow channels are used for heat exchange with all positions of the battery 200 and cannot be divided according to the design idea of the dual-control flow channels. Moreover, the heat exchange between the above-mentioned flow channels and the battery 200 also affects the overall uniformity of the battery 200. Therefore, in this embodiment, the first confluence flow channel 320 and the second confluence flow channel 330 are usually placed outside the battery 200 so that the orthographic projections of the first confluence flow channel 320 and the second confluence flow channel 330 on the support member 100 cover at least part of the side beam 120. By setting like this, it is convenient to layout the first heat exchange flow channel 311 and the second heat exchange flow channel 312, so that the first heat exchange flow channel 311 can exchange heat with the first heat generation area with a larger heat generation amount, and the second heat exchange flow channel 312 can exchange heat with the second heat generation area with a smaller heat generation amount, thereby achieving a more uniform and efficient heat exchange effect, which further helps to maintain the temperature consistency of the battery, extend the life of the battery and improve the performance of the battery.

[0109] It should be noted that the orthographic projections of the first confluence flow channel 320 and the second confluence flow channel 330 on the support member 100 cover at least part of the side beam 120. It can be understood that the orthographic projections of the first confluence flow channel 320 and the second confluence flow channel 330 on the support member 100 cover all of the side beam 120, or can also cover part of the side beam 120.

[0110] It should be understood that the heat exchange flow channel 310 is formed by the inner cavity of the heat exchange tube, and the heat exchange flow channel 310 can also be formed by other structures. Exemplarily, please refer to the attached Figure 7 , the heat exchange member 300 includes a flow channel plate 392 and a heat spreader 391; wherein, the heat exchange flow channel 310 is formed on the flow channel plate 392, and the heat exchange flow channel 310 can be formed by a stamping process. The heat spreader 391 is covered on the flow channel plate 392 so that a closed heat exchange flow channel 310 is formed between the flow channel plate 392 and the heat spreader 391.

[0111] As a possible implementation manner, the heat exchange member 300 includes a flow channel plate 392 and a heat spreader 391 which are stacked, and the heat exchange flow channel 310, the first confluence flow channel 320 and the second confluence flow channel 330 are arranged between the flow channel plate 392 and the heat spreader 391; the bridging flow channel 340 is located between the side beam 120 and the heat spreader 391. By setting like this, the side beam 120 can be used to provide support for the bridging flow channel 340, thereby improving the stability of the battery pack.

[0112] It should be understood that the bridging flow channel 340 can be formed by enclosing the side beam 120 and the heat spreader 391, or can also be formed by other structures.

[0113] Among them, a recessed area is provided on the side beam 120. In one example, the recessed area constitutes the bridging flow channel 340. In this way, the need for additional components can be reduced, thereby simplifying the overall structural design, reducing the weight of the battery pack, and being beneficial to improving the energy density of the battery. In another example, the bridging flow channel 340 can also be constituted by additional components, and the recessed area is used to provide an accommodation space for the additional components. For example, the recessed area at least accommodates a part of the bridging flow channel 340. In this way, on the one hand, the height of the battery pack can be reduced, and on the other hand, more internal space can be released for the arrangement of other components, improving the space utilization rate.

[0114] When the bridging flow channel 340 is constituted by additional components, the heat exchange member 300 may include a bridging member 400, and the bridging member 400 is arranged on the side of the heat dissipation plate 391 facing the support member 100; or rather, the bridging member 400 is arranged on the side of the heat dissipation plate 391 facing the battery 200.

[0115] The bridging member 400 and the heat dissipation plate 391 enclose the bridging flow channel 340. In order to facilitate the bridging flow channel 340 to communicate with the first confluence flow channel 320 and the first heat exchange flow channel 311, in this embodiment, a first communication hole (not shown in the figure) and a second communication hole (not shown in the figure) are provided on the heat dissipation plate 391, wherein the first communication hole and the second communication hole are arranged at intervals. One end of the bridging flow channel 340 is communicated with the first confluence flow channel 320 through the first communication hole, and the other end of the bridging flow channel 340 is communicated with the first heat exchange flow channel 311 through the second communication hole to realize the communication between the first confluence flow channel 320 and the first heat exchange flow channel 311.

[0116] It should be noted that there are various choices for the structure of the bridging member 400. In one example, please refer to the appendix Figure 7 , the bridging member 400 may include a bridging plate. For example, a groove can be formed on one side of the bridging plate by a stamping process. When the bridging plate is connected to the heat dissipation plate 391, for example, the bridging plate is connected to the side of the heat dissipation plate 391 facing away from the flow channel plate 392, and the bridging plate and the heat dissipation plate 391 enclose the bridging flow channel 340.

[0117] In another example, please refer to the appendix Figure 6 , the bridging member 400 may also be a bridging pipe. The bridging pipe may include a main pipe 410 and connecting pipes 420 respectively communicating with the main pipe. One of the connecting pipes 420 is welded to the first communication hole, and the other connecting pipe 420 is welded to the second connection hole.

[0118] In this embodiment, the recessed area provided on the side beam 120 can also be used to accommodate the bridging member 400, thereby protecting the bridging member 400 from external physical damage and environmental influences, helping to extend the service life of the bridging member 400, and improving the reliability of the battery pack. In addition, the bridging member 400 is opposite to the side beam 120 and is arranged offset from the battery 200, so as to ensure that the bridging member 400 does not affect the heat dissipation effect of the battery 200.

[0119] Among them, there is a gap between the bridging member 400 and the inner wall of the recessed area. For example, along the thickness direction of the support member 100, the distance between the surface of the bridging member 400 facing away from the heat exchange member 300 and the heat exchange member 300 is 4 mm, then the distance between the bottom wall of the recessed area and the heat exchange member 300 is greater than 4 mm. With such a setting, on the one hand, it allows the bridging member 400 to have a certain degree of freedom during the process of thermal expansion and contraction, thereby reducing the influence of thermal stress on the bridging member 400 and the recessed area, helping to extend the service life of the battery pack and improving the reliability of the battery pack; on the other hand, it can play a role in shock absorption and vibration absorption, reducing the mechanical stress on the bridging member 400 during operation, which helps to improve the stability and durability of the battery pack.

[0120] In addition, in other embodiments, the bridging member 400 can also be arranged between the battery 200 and the side beam, that is, there is a gap between the battery 200 and the side beam, and this gap can be used to accommodate the bridging member 400.

[0121] It should be understood that, in order to facilitate the cyclic flow of the fluid in the first heat exchange flow channel 311 and the second heat exchange flow channel 312, the number of the first confluence flow channels 320 and the second confluence flow channels 330 can both be two. Taking the first confluence flow channel 320 as an example, one of the first confluence flow channels 320 can be used as the liquid inlet confluence flow channel, and the other first confluence flow channel 320 can be used as the liquid outlet confluence flow channel.

[0122] For the purpose of describing the functions of the first confluence flow channel 320 and the second confluence flow channel 330 in detail, in this embodiment, the first confluence flow channel 320 includes a first sub-confluence flow channel 321, the second confluence flow channel 330 includes a second sub-confluence flow channel 331, and the bridging flow channel 340 includes a first bridging flow channel 341; the first sub-confluence flow channel 321 and the second sub-confluence flow channel 331 are located on the first side of the heat exchange flow channel 310; the first sub-confluence flow channel 321 is communicated with the first heat exchange flow channel 311 through the first bridging flow channel 341; the second sub-confluence flow channel 331 is communicated with the second heat exchange flow channel 312.

[0123] The first confluence flow channel 320 includes a third sub-confluence flow channel 322, the second confluence flow channel 330 includes a fourth sub-confluence flow channel 332, and the bridging flow channel 340 includes a second bridging flow channel 342; the third sub-confluence flow channel 322 and the fourth sub-confluence flow channel 332 are located on the second side of the heat exchange flow channel 310; the third sub-confluence flow channel 322 communicates with the first heat exchange flow channel 311 through the second bridging flow channel 342; the fourth sub-confluence flow channel 332 communicates with the second heat exchange flow channel 312. It should be understood that in this embodiment, the first side and the second side can be arranged along the first direction.

[0124] Through the design of multiple sub-confluence flow channels and bridging flow channels in this embodiment, it helps to transfer heat more effectively and improve the performance of the battery pack.

[0125] Please continue to refer to the appendix Figure 3 For the convenience of controlling the flow rate of the fluid in the first confluence flow channel 320 and the second confluence flow channel 330, the heat exchange member 300 provided in this embodiment further includes a first joint 351, a second joint 352, a third joint 353, and a fourth joint 354.

[0126] The first sub-confluence flow channel 321 communicates with the first joint 351, and the third sub-confluence flow channel 322 communicates with the second joint 352; the second sub-confluence flow channel 331 communicates with the third joint 353; the fourth sub-confluence flow channel 332 communicates with the fourth joint 354.

[0127] It should be noted that one of the first sub-confluence flow channel 321 and the third sub-confluence flow channel 322 serves as the liquid inlet confluence flow channel of the first heat exchange flow channel 311; the other serves as the liquid outlet confluence flow channel of the first heat exchange flow channel 311. One of the second sub-confluence flow channel 331 and the fourth sub-confluence flow channel 332 serves as the liquid inlet confluence flow channel of the second heat exchange flow channel 312; the other serves as the liquid outlet confluence flow channel of the second heat exchange flow channel 312.

[0128] In this embodiment, the liquid inlet confluence flow channel of the first heat exchange flow channel 311 and the liquid outlet confluence flow channel of the second heat exchange flow channel 312 are located on the same side of the heat exchange flow channel 310, and the liquid outlet confluence flow channel of the first heat exchange flow channel 311 and the liquid inlet confluence flow channel of the second heat exchange flow channel 312 are located on the same side of the heat exchange flow channel 310. Such an arrangement can reduce the cross-contamination between fluids and help improve the cleanliness of the battery pack and the purity of the fluid.

[0129] In addition, in this embodiment, the first heat exchange flow path 311 and the second heat exchange flow path 312 have relatively independent connectors. That is, the flow rate of the fluid in the first heat exchange flow path 311 can be controlled by relying on the first connector 351 and the second connector 352 and in cooperation with the thermal management system of the battery pack. The flow rate of the fluid in the second heat exchange flow path 312 can be controlled by relying on the third connector 353 and the fourth connector 354 and in cooperation with the thermal management system of the battery pack, so that the heat exchange member 300 forms a double-in and double-out intelligent heat exchange member. In this way, more flexible adjustment means can be provided, and then the heat exchange member 300 has a faster response speed, can better and more accurately control the temperature difference of the battery 200, so that each battery cell in the battery 200 can enjoy equal treatment, and at the same time, the space requirement on the plane is minimized. In addition, the double-in and double-out intelligent heat exchange member does not need to perform secondary design of thermal management for a certain small part, and can also reduce the frictional along-flow resistance and has excellent energy-saving properties.

[0130] It should be noted that there are various choices for the installation positions of the first connector 351, the second connector 352, the third connector 353 and the fourth connector 354. Exemplarily, in the second direction, the first connector 351, the second connector 352, the third connector 353 and the fourth connector 354 are located on the same side of the heat exchange flow path 310, so as to Figure 3 take the shown orientation as an example, the first connector 351, the second connector 352, the third connector 353 and the fourth connector 354 are located on the left side of the heat exchange flow path 310. In this way, the layout of the first confluence flow path 320 and the second confluence flow path 330 can be facilitated, and the structural compactness of the battery pack can be improved.

[0131] Please continue to refer to the attached Figure 3 figure, the heat exchange member 300 further includes a first liquid return confluence flow path 370 and a second liquid return confluence flow path 380; the second sub-confluence flow path 331 is communicated with the second connector 352 through the first liquid return confluence flow path 370; the third sub-confluence flow path 322 is communicated with the fourth connector 354 through the second liquid return confluence flow path 380.

[0132] The first liquid return confluence flow path 370 and the second liquid return confluence flow path 380 are arranged on a different layer from the heat exchange flow path 310. In the thickness direction of the support member 100, the first liquid return confluence flow path 370 and the second liquid return confluence flow path 380 are arranged on the same side of the heat exchange flow path 310, or are respectively arranged on both sides of the heat exchange flow path 310. Such an arrangement can avoid the first liquid return confluence flow path 370, the second liquid return confluence flow path 380 and the heat exchange flow path 310 being on the same layer. On the one hand, it reduces the manufacturing difficulty of the first liquid return confluence flow path 370, the second liquid return confluence flow path 380 and the heat exchange flow path 310. On the other hand, it avoids the fluid in the first liquid return confluence flow path 370, the second liquid return confluence flow path 380 and the fluid in the heat exchange flow path 310 from being crosstalked. Furthermore, on the premise of ensuring the normal operation of the heat exchange member 300, the heat exchange efficiency of the heat exchange member 300 is also improved.

[0133] It should be understood that the first liquid return manifold 370 and the second liquid return manifold 380 can be separate pipes or structures jointly formed between the support member 100 and the heat exchange member 300. Exemplarily, the support member 100 further includes an intermediate beam 130 that extends in the second direction and is located between two side beams 120 arranged at intervals in the first direction; for example, the intermediate beam 130 is located in the middle of the support member 100.

[0134] Both the first liquid return manifold 370 and the second liquid return manifold 380 are formed in the intermediate beam 130. For example, two grooves are provided on the intermediate beam 130 and extend in the second direction; the two grooves respectively constitute the first liquid return manifold 370 and the second liquid return manifold 380.

[0135] With such an arrangement, the first liquid return manifold 370 and the second liquid return manifold 380 can be simplified, thereby simplifying the manufacturing difficulty of the heat exchange member 300 and reducing the production cost of the heat exchange member 300.

[0136] In addition, in other embodiments, the grooves accommodate the first liquid return manifold 370 and the second liquid return manifold 380. That is, the first liquid return manifold 370 and the second liquid return manifold 380 can also be constituted by additional components, and the grooves only provide accommodation spaces for the additional components. For example, a liquid return member is provided on the heat exchange member, and the liquid return member is arranged on the side of the heat dissipation plate away from the flow channel plate, so that the first liquid return manifold 370 and the second liquid return manifold 380 are formed between the liquid return member and the heat dissipation plate. At this time, the grooves at least accommodate part of the liquid return member. In this way, on the one hand, the height of the battery pack can be reduced, and on the other hand, more internal space can be released for the arrangement of other components, improving the space utilization rate.

[0137] In addition, the superheat degree at the outlet of the heat exchange member 300 is usually controlled to ensure the normal operation of the compressor. Therefore, the flow channels here usually overheat. Therefore, it is necessary to consider placing the first liquid return manifold 370 and the second liquid return manifold 380 at positions where the battery 200 is not provided. For example, the first liquid return manifold 370 and the second liquid return manifold 380 are arranged on the intermediate beam 130. With such an arrangement, on the one hand, even when the temperatures of the first liquid return manifold 370 and the second liquid return manifold 380 are too high, the heat exchange of the battery will not be affected, avoiding overheating of the battery and improving the temperature uniformity of the battery. On the other hand, based on the relatively large size of the intermediate beam 130, arranging the first liquid return manifold 370 and the second liquid return manifold 380 on the intermediate beam 130 in this embodiment can avoid occupying the space of the side beam 120.

[0138] It should be noted that when the first liquid return manifold 370 and the second liquid return manifold 380 can be separate pipes, the two grooves can also accommodate the pipes respectively, providing installation space for the pipes, reducing the height of the battery pack, and thus increasing the energy density of the battery pack.

[0139] In a possible implementation, the support member 100 further includes a plurality of longitudinal beams 140. Each longitudinal beam 140 extends in the first direction. The plurality of longitudinal beams 140 are arranged at intervals in the second direction to divide each accommodation cavity 110 into a plurality of sub-accommodation cavities; that is, the plurality of longitudinal beams 140 divide the first accommodation cavity 111 and the second accommodation cavity 112 into a plurality of sub-accommodation cavities at the same time. Each sub-accommodation cavity is correspondingly provided with a battery 200.

[0140] At least two batteries 200 arranged in the first direction correspond to one heat exchange flow channel 310. This design optimizes the space utilization rate, enabling the battery pack to accommodate more batteries in a limited space and increasing the energy density of the battery pack.

[0141] Please refer to the attached Figure 3 figure, the number of heat exchange flow channels 310 is multiple. Correspondingly, the number of the first heat exchange flow channels 311 is multiple, and each first heat exchange flow channel 311 corresponds to two batteries 200 arranged in the first direction.

[0142] The first converging flow channel 320 is communicated with the corresponding first heat exchange flow channel 311 through the bridging flow channel 340. Taking the structure shown in the attached Figure 2 figure as an example, in the second direction, among two adjacent heat exchange flow channels 310, the bridging flow channel 340 can be simultaneously communicated with the first heat exchange flow channels 311 of the heat exchange flow channels 310. In this way, the number of bridging flow channels 340 can be reduced, the risk of the battery pack malfunctioning can be reduced, and thus the overall reliability and durability of the system can be improved. In addition, by reducing the number of bridging flow channels 340, the space utilization rate of the battery pack can be optimized, which helps to reduce the volume and weight of the battery pack and is suitable for application scenarios with limited space.

[0143] In this embodiment, the bridging flow channel 340 is also correspondingly arranged between the corresponding longitudinal beam 140 and the heat exchange member 300. That is, the bridging flow channel 340 is located at the connection position of the side beam 120 and the longitudinal beam 140 at the same time to improve the stability of the battery pack and thus improve the safety of the battery pack. For example, the bridging flow channel is arranged between the longitudinal beam and the heat exchange member correspondingly.

[0144] The embodiment of the present application further provides an electrical device, including an electrical device and the battery pack described in any of the above embodiments. The battery pack is electrically connected to the electrical device and is used to provide electrical energy for the electrical device.

[0145] The electrical device in the embodiments of the present application may be a vehicle. For example, 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, an extended-range vehicle, etc. Correspondingly, the electrical device may be a driving mechanism of the vehicle or a control system of the vehicle.

[0146] In addition, the electrical device may also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships, and spacecrafts. Among them, the spacecraft may include airplanes, rockets, space shuttles, or spaceships.

[0147] Since the electrical device in this embodiment includes the battery pack described in any of the above embodiments, the electrical device includes the battery pack structure and beneficial effects, which will not be elaborated in this embodiment.

[0148] The embodiments or implementation manners in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0149] It should be noted that phrases such as "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily each embodiment includes such specific features, structures, or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining an embodiment to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments, whether explicitly or implicitly described, is within the knowledge scope of those skilled in the art.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; 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.

Claims

1. A battery pack, characterized in that: include: Battery (200); A support member (100), the support member (100) comprising at least two accommodating cavities (110), the at least two accommodating cavities (110) being arranged along a first direction; a battery (200) being arranged in each accommodating cavity (110); a heat exchange member (300), the heat exchange member (300) being disposed on the support member (100) and exchanging heat with the battery (200); The heat exchange component (300) extends along the first direction and straddles the at least two accommodating chambers (110); along the first direction, two ends of the heat exchange component (300) respectively straddle the outermost two accommodating chambers (110).

2. The battery pack according to claim 1, characterized in that: The heat exchange component (300) comprises a heat exchange channel (310), wherein the heat exchange channel (310) extends along the first direction and spans the at least two accommodating chambers (110).

3. The battery pack according to claim 2, characterized in that: The at least two accommodating chambers (110) include a first accommodating chamber (111) and a second accommodating chamber (112); In the first direction, one end of the heat exchange element (300) is arranged across the first accommodating chamber (111), and the other end of the heat exchange element (300) is arranged across the second accommodating chamber (112).

4. The battery pack according to claim 3, characterized in that: The length of the heat exchange channel (310) spanning the first accommodating chamber (111) is equal to the length of the heat exchange channel (310) spanning the second accommodating chamber (112).

5. The battery pack according to any one of claims 2 to 4, characterized in that: There are a plurality of heat exchange channels (310), and the plurality of heat exchange channels (310) are arranged along the second direction and are independent of each other; each heat exchange channel (310) exchanges heat with each battery (200) correspondingly; The second direction intersects the first direction.

6. The battery pack according to claim 5, characterized in that: Each of the heat exchange channels (310) comprises a first heat exchange channel (311) and a second heat exchange channel (312), wherein the first heat exchange channel (311) is independent of the second heat exchange channel (312) and is located on at least one side of the second heat exchange channel (312); Along the second direction, each battery (200) comprises a first heating area and a second heating area, the first heating area is located on at least one side of the second heating area; the heat generated by the first heating area is greater than the heat generated by the second heating area; The first heat exchange channel (311) is used for exchanging heat with the first heating area, and the second heat exchange channel (312) is used for exchanging heat with the second heating area.

7. The battery pack according to claim 6, characterized in that: The number of the first heat exchange channels is two, and the two first heat exchange channels are respectively arranged on both sides of the second heat exchange channel; The number of the first heating zones is two, and the two first heating zones are respectively arranged on both sides of the second heating zone.

8. The battery pack according to claim 6 or 7, characterized in that: The heat exchange element (300) further includes a first converging flow channel (320), a second converging flow channel (330) and a bridging flow channel (340); In the first direction, among the first converging flow channel (320) and the second converging flow channel (330) located on the same side of the heat exchange flow channel (310), the first converging flow channel (320) is located on a side of the second converging flow channel (330) away from the heat exchange flow channel (310), the first converging flow channel (320) is connected to the first heat exchange flow channel (311) through the bridging flow channel (340), and the second converging flow channel (330) is connected to the second heat exchange flow channel (312); Alternatively, in the first direction, among the first converging channel (320) and the second converging channel (330) located on the same side of the heat exchange channel (310), the second converging channel (330) is located on the side of the first converging channel (320) away from the heat exchange channel (310), and the second converging channel (330) is connected to the second heat exchange channel (312) through the bridging channel (340), and the first converging channel (320) is connected to the first heat exchange channel (311).

9. The battery pack according to claim 8, characterized in that: A plurality of the first heat exchange channels (311) arranged along the second direction are connected in parallel to the first converging channel (320); A plurality of the second heat exchange channels (312) arranged along the second direction are connected in parallel to the second converging channel (330).

10. The battery pack according to claim 9, characterized in that: The first converging flow channel (320) and the second converging flow channel (330) are arranged in the same layer, and are arranged in a different layer from the bridging flow channel (340).

11. The battery pack according to any one of claims 9 to 10, characterized in that: The heat exchange component (300) comprises a flow channel plate (392) and a temperature balancing plate (391) which are stacked, and the heat exchange flow channel (310), the first converging flow channel (320) and the second converging flow channel (330) are arranged between the flow channel plate (392) and the temperature balancing plate (391).

12. The battery pack according to claim 11, characterized in that: The support member (100) comprises a side beam (120), and the side beam (120) extends along the second direction; The orthographic projections of the first converging flow channel (320) and the second converging flow channel (330) on the support member (100) cover at least a portion of the side beam (120).

13. The battery pack according to claim 12, characterized in that: The side beam (120) is provided with a recessed area; the recessed area constitutes the bridging flow channel (340), or the recessed area at least accommodates a portion of the bridging flow channel (340).

14. The battery pack according to claim 11, characterized in that: The heat exchange component (300) further comprises a bridging component (400), wherein the bridging component (400) is arranged on a side of the temperature averaging plate (391) facing the support component (100), and is enclosed with the temperature averaging plate (391) to form the bridging flow channel (340); The temperature equalizing plate (391) comprises a first communicating hole and a second communicating hole arranged at intervals; One end of the bridging flow channel (340) is connected to the first converging flow channel (320) through the first connecting hole, and the other end of the bridging flow channel (340) is connected to the first heat exchange flow channel (311) through the second connecting hole.

15. The battery pack according to any one of claims 12 to 14, characterized in that: The first confluence flow channel (320) includes a first sub-confluence flow channel (321), the second confluence flow channel (330) includes a second sub-confluence flow channel (331), and the bridge flow channel (340) includes a first bridge flow channel (341); The first sub-confluence flow channel (321) and the second sub-confluence flow channel (331) are located on a first side of the heat exchange flow channel (310); The first sub-converging flow channel (321) is connected to the first heat exchange flow channel (311) via the first bridging flow channel (341); the second sub-converging flow channel (331) is connected to the second heat exchange flow channel; And / or, the first confluence flow channel (320) further includes a third sub-confluence flow channel (322), the second confluence flow channel (330) includes a fourth sub-confluence flow channel (332), and the bridging flow channel (340) includes a second bridging flow channel (342); The third sub-converging flow channel (322) and the fourth sub-converging flow channel (332) are located on the second side of the heat exchange flow channel (310); the third sub-converging flow channel (322) is connected to the second heat exchange flow channel (312) through the second bridging flow channel (342).

16. The battery pack according to claim 15, characterized in that: The heat exchange element (300) further comprises a first joint (351), a second joint (352), a third joint (353), and a fourth joint (354); The first sub-confluence flow channel (321) is in communication with the first joint (351), and the third sub-confluence flow channel (322) is in communication with the second joint (352); The second sub-confluence flow channel (331) is in communication with the third joint (353); and the fourth sub-confluence flow channel (332) is in communication with the fourth joint (354).

17. The battery pack according to claim 16, characterized in that: In the second direction, the first joint (351), the second joint (352), the third joint (353) and the fourth joint (354) are located on the same side of the heat exchange channel (310).

18. The battery pack according to claim 16, characterized in that: The heat exchange element (300) further comprises a first liquid return confluence channel (370) and a second liquid return confluence channel (380); the first liquid return confluence channel (370) and the second liquid return confluence channel (380) are arranged in different layers from the heat exchange channel (310); The second sub-flow confluence channel (331) is in communication with the second joint (352) via the first liquid return confluence channel (370); The third sub-flow confluence channel (322) is in communication with the fourth joint (354) via the second liquid return confluence channel (380).

19. The battery pack according to claim 18, characterized in that: The support member (100) further comprises a middle beam (130), wherein the middle beam (130) extends along the second direction, and the middle beam (130) is located between the two side beams (120); The first liquid return confluence channel (370) and the second liquid return confluence channel (380) are both formed on the middle beam (130).

20. The battery pack according to claim 19, characterized in that: The middle beam (130) is provided with two grooves, and the two grooves extend along the second direction; The two grooves respectively constitute the first liquid return confluence channel (370) and the second liquid return confluence channel (380), or the grooves accommodate the first liquid return confluence channel (370) and the second liquid return confluence channel (380).

21. The battery pack according to claim 9 or 10, characterized in that: The support member (100) further comprises a plurality of longitudinal beams (140) extending along the first direction, wherein the plurality of longitudinal beams (140) are arranged at intervals along the second direction so as to separate each of the accommodating cavities (110) into a plurality of sub-accommodating cavities, and each of the sub-accommodating cavities is correspondingly provided with a battery (200); At least two of the batteries (200) arranged along the first direction correspond to one of the heat exchange channels (310).

22. The battery pack according to claim 21, characterized in that: There are a plurality of the first heat exchange channels (311); and the first converging channels (320) are connected to the corresponding first heat exchange channels (311) via the bridging channels (340).

23. An electrical equipment, characterized in that: It comprises an electric device and the battery pack according to any one of claims 1 to 22, wherein the battery pack is electrically connected to the electric device and is used to provide electrical energy to the electric device.

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