Heat sink, battery assembly, battery device, and electric system

Abstract

The present application relates to a heat sink. The heat sink is provided with at least one air cooling channel and at least one liquid cooling channel, the air cooling channel is provided with an air inlet end and an air outlet end, the air inlet end is suitable for air inflow, and the air outlet end is suitable for air outflow; the liquid cooling channel is provided with a liquid inlet end and a liquid outlet end, the liquid inlet end is suitable for liquid inflow, and the liquid outlet end is suitable for liquid outflow. The heat sink of the present application can achieve both air-cooling heat dissipation and liquid-cooling heat dissipation, and features a simple structure and low manufacturing cost. The present application further provides a battery assembly, a battery device, and an electric system.

Description

Heat dissipation plate, battery assembly, battery device and power system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 30, 2023, with application number 202322940092.9 and application name “Heat dissipation plate, battery assembly, battery device and power system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a heat sink, a battery assembly, a battery device, and a power system. Background Art

[0003] Battery modules typically use air cooling to dissipate heat, for example, when discharging at low rates. A single cooling method cannot meet the cooling requirements of battery modules at different charge and discharge rates, and the cooling effect is poor.

[0004] Summary of the Invention

[0005] To address the above issues, this application provides a heat sink that, through targeted optimization of the internal structure of the heat sink, can simultaneously achieve air cooling and liquid cooling while simplifying the internal structure of the heat sink. This application also provides a battery assembly, battery device, and power system. Specifically, the following solutions are included.

[0006] In the first aspect, the present application provides a heat sink, which is provided with at least one air-cooling channel and at least one liquid-cooling channel. The air-cooling channel is provided with an air inlet end and an air outlet end, the air inlet end is suitable for air inflow, and the air outlet end is suitable for air outflow; the liquid-cooling channel is provided with a liquid inlet end and a liquid outlet end, the liquid inlet end is suitable for liquid inflow, and the liquid outlet end is suitable for liquid outflow.

[0007] The present application provides air-cooling channels and liquid-cooling channels in the heat sink, so that the external air flowing in the air-cooling channels can carry away the heat transferred to the heat sink, thereby achieving the effect of air-cooling and heat dissipation of the heat sink. The coolant flowing in the liquid-cooling channels can carry away the heat transferred to the heat sink, thereby achieving the effect of liquid-cooling and heat dissipation of the heat sink. By setting an air inlet and an air outlet, external air can flow from the air inlet into each air-cooling channel and flow out from the corresponding air outlet. By setting a liquid inlet and a liquid outlet, the coolant provided by an external cold source can flow from the liquid inlet into each liquid-cooling channel and flow back to the external cold source from each liquid outlet, thereby achieving the effect of liquid-cooling and heat dissipation.

[0008] This application integrates several air-cooling channels and several liquid-cooling channels into the heat sink, and realizes both air-cooling and liquid-cooling heat dissipation functions through one structural component of the heat sink, so as to achieve compatibility between air-cooling and liquid-cooling heat dissipation and improve heat dissipation efficiency.

[0009] In one embodiment, the heat dissipation plate includes two heat dissipation surfaces, a side wall is provided between the two heat dissipation surfaces, and the two heat dissipation surfaces are arranged back to back.

[0010] In one embodiment, the liquid inlet and the liquid outlet are located on the heat dissipation surface, and the air inlet and the air outlet are arranged on the side wall.

[0011] In one embodiment, the air inlet and the air outlet are arranged on the heat dissipation surface, and the liquid inlet and the liquid outlet are arranged on the side wall.

[0012] In one embodiment, the liquid inlet and the liquid outlet are located on the same heat dissipation surface, and the air inlet and the air outlet are respectively arranged on two opposite side walls.

[0013] In one embodiment, the air cooling channel and the liquid cooling channel extend along a first direction, the air cooling channel and the liquid cooling channel are alternately arranged along a second direction, and the first direction intersects the second direction.

[0014] In this embodiment, by arranging the air cooling channels and the liquid cooling channels alternately, uniform heat dissipation of the heat sink can be achieved, thereby ensuring a good heat dissipation effect.

[0015] In one embodiment, the heat dissipation plate includes two side walls connected between two heat dissipation surfaces, and the air inlet and the air outlet are respectively arranged on the two side walls relative to each other along a first direction, and the first direction is perpendicular to the second direction.

[0016] In this embodiment, by setting up each air-cooling channel to directly pass through the two side walls of the heat sink, external air can flow directly into the corresponding air-cooling channel from the through-hole formed on the side wall at the air inlet end, and flow directly out from the through-hole formed on the side wall at the air outlet end, thereby reducing the pipeline structure used to connect with the air inlet end or the air outlet end, so as to further simplify the internal structure of the heat sink of this application.

[0017] In one embodiment, at least one heat dissipation component is provided in the air-cooling channel, and the heat dissipation component extends along a first direction.

[0018] In one embodiment, the heat dissipation component includes heat dissipation fins, a plurality of heat dissipation fins are provided in the air cooling channel, and the plurality of heat dissipation fins are spaced apart along the second direction.

[0019] In this embodiment, by providing a plurality of heat dissipating fins within each cooling channel, the external air flowing into each cooling channel can be diverted, ensuring uniform and stable flow of external air within each cooling channel, thereby improving the cooling effect of the cooling channel on the battery. Furthermore, by providing a plurality of heat dissipating fins within each cooling channel, the structural strength of the heat sink can be improved, ensuring the load-bearing effect and stability of multiple batteries.

[0020] In a second aspect, the present application further provides a battery assembly, comprising a battery and a heat sink as described in any of the above embodiments, wherein the battery is disposed on the heat sink, and the heat sink is used to dissipate heat from the battery.

[0021] Because the battery assembly of the present application adopts the heat dissipation plate described in any of the above embodiments, the battery assembly of the present application has all possible beneficial effects of the heat dissipation plate described in any of the above embodiments.

[0022] In one embodiment, the plurality of batteries are sequentially arranged along a first direction, where the first direction is an extension direction of an air cooling channel or a liquid cooling channel in the heat sink.

[0023] In one embodiment, there are multiple batteries, and the battery assembly includes a liquid inlet plate and a liquid outlet plate of a plate-like structure. The liquid inlet plate and the liquid outlet plate are respectively fixed to opposite sides of the multiple batteries along a first direction.

[0024] In this embodiment, by arranging the liquid inlet plate and the liquid outlet plate to be fixed on opposite sides of the plurality of batteries along the first direction, a holding effect can be formed on the plurality of batteries arranged along the first direction, so as to limit the displacement of the plurality of batteries in the first direction, thereby preventing the batteries from shaking or moving, etc., which may affect their working performance and working stability.

[0025] In one embodiment, the liquid inlet plate is provided with a liquid inlet interface and a liquid inlet flow channel, and the liquid inlet flow channel is communicated with each liquid cooling channel so that the liquid flows into each liquid cooling channel through the liquid inlet interface.

[0026] In one embodiment, the liquid inlet plate is further provided with multiple liquid inlet diversion channels, the liquid inlet interface is connected to the liquid inlet flow channel, the liquid inlet flow channel is connected to multiple liquid inlet diversion channels, and the liquid inlet diversion channels are connected to each liquid cooling channel so that the liquid flows into each liquid cooling channel through the liquid inlet interface.

[0027] In one embodiment, the liquid inlet port is located on a side of the liquid inlet plate.

[0028] In one embodiment, the liquid outlet plate is provided with a liquid outlet interface and a liquid outlet flow channel, and the liquid outlet flow channel is connected to each liquid cooling channel so that the liquid flowing out of each liquid cooling channel flows out from the liquid outlet interface.

[0029] In one embodiment, the liquid outlet plate is further provided with a plurality of liquid outlet diversion channels, each liquid cooling channel is connected to each liquid outlet diversion channel, a plurality of liquid outlet diversions are connected to the liquid outlet flow channel, and the liquid outlet interface is connected to the liquid outlet flow channel, so that the liquid flowing out of each liquid cooling channel flows out from the liquid outlet interface.

[0030] In one embodiment, the liquid outlet port is located on a side of the liquid outlet plate.

[0031] In one embodiment, two ridges are provided on the same heat dissipation surface of the heat dissipation plate, and the two ridges are arranged at intervals along the second direction. The two ridges are used to limit the displacement of the battery along the second direction. The second direction is the direction in which the air cooling channels and liquid cooling channels in the heat dissipation plate are alternately arranged.

[0032] In this embodiment, two convex strips are arranged on opposite sides of a plurality of batteries along the second direction, so that the two convex strips can work together to limit the displacement of the plurality of batteries in the second direction, thereby preventing the batteries from shaking or moving, which would affect their working performance and stability.

[0033] In one embodiment, the battery assembly includes a heat insulating member, which is filled between the liquid inlet plate or the liquid outlet plate and the adjacent battery to isolate heat transfer between the liquid inlet plate or the liquid outlet plate and the adjacent battery.

[0034] In this embodiment, by providing a heat insulating member between the liquid inlet plate or the liquid outlet plate and the battery adjacent thereto, the heat transfer between the liquid inlet plate or the liquid outlet plate and the battery adjacent thereto can be isolated, thereby ensuring that the heat generated by the battery can only be transferred to the heat sink, thereby avoiding an increase in the heat dissipation surface of the battery adjacent to the liquid inlet plate or the liquid outlet plate, resulting in the temperature of the battery adjacent to the liquid inlet plate or the liquid outlet plate being too low or the temperature difference between the battery and the battery at other positions being too large, resulting in uneven heat dissipation affecting the working performance and working stability of the battery.

[0035] At the same time, by arranging a heat insulating member between the liquid inlet plate or the liquid outlet plate and the adjacent battery, a buffering effect can be formed between the liquid inlet plate or the liquid outlet plate and the adjacent battery, thereby preventing the battery from heating up and expanding and squeezing the liquid inlet plate or the liquid outlet plate, causing deformation of the liquid inlet plate or the liquid outlet plate, affecting the service life and structural performance of the liquid inlet plate or the liquid outlet plate, and preventing the structural stability of the liquid inlet plate or the liquid outlet plate from being affected by shaking of the battery.

[0036] In one embodiment, the thermal insulation member is made of thermal insulation cotton.

[0037] In a third aspect, the present application further provides a battery device, comprising: a housing and a battery assembly as described in any one of the above embodiments, wherein the battery assembly is fixed in the housing, and the housing is used to protect the battery assembly.

[0038] The battery device of the present application arranges the battery assembly in the shell so that the shell can support and protect the battery assembly, thereby preventing external impact from causing damage to the battery assembly and affecting the working performance and working stability of the battery assembly.

[0039] Because the battery device of the present application adopts the battery assembly described in any of the above embodiments, the battery device of the present application has all possible beneficial effects of the battery assembly described in any of the above embodiments.

[0040] In one embodiment, the battery device further includes a fan, which is fixed to the housing and configured to introduce external air into the air inlet ends of the respective air-cooling channels.

[0041] In this embodiment, fans and vents are fixed to the housing. The fan and vents work together to draw outside air through the vents into the air inlet of each cooling channel. This in turn forces the outside air out of the cooling channel’s outlet and out of the housing through the vents, achieving circulation and heat exchange within the housing and the cooling channels. Furthermore, the fan and vents are simple and easy to implement, simplifying the battery pack’s structural design and reducing the manufacturing cost of the battery device.

[0042] In one embodiment, there are multiple battery assemblies, and the multiple battery assemblies are stacked in a direction perpendicular to the plane of the heat dissipation plate of the battery assembly.

[0043] In this embodiment, by providing multiple battery assemblies, the charge and discharge requirements of the battery device of this application at different rates can be met, as well as the different capacities of the battery device of this application, thereby improving the scope of application and compatibility of the battery device of this application. Furthermore, by providing multiple battery assemblies stacked along a plane perpendicular to the heat sink of the battery assembly, the plurality of batteries within each battery assembly are provided with heat sinks on opposite sides of the plane perpendicular to the heat sink, thereby simultaneously dissipating heat from the batteries on opposite sides of the plane perpendicular to the heat sink, thereby expanding the heat dissipation surface of the batteries and thereby improving the heat dissipation effect on the batteries.

[0044] In a fourth aspect, the present application further provides an electricity consumption system, which includes an electricity consumption device and a battery device. The battery device is used to supply power to the electricity consumption device, and the battery device includes the battery assembly described in any of the above embodiments.

[0045] Because the power system of the present application adopts the battery device described in any of the above embodiments, the power system of the present application has all possible beneficial effects of the battery device described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] FIG1 is a schematic diagram of a working scenario of the battery device of the present application;

[0048] FIG2 is a schematic structural diagram of a battery assembly of the battery device of the present application from a side perspective in the embodiment shown in FIG1 ;

[0049] FIG3 is a schematic structural diagram of the heat dissipation plate of the battery assembly in the embodiment shown in FIG2 from a side perspective;

[0050] FIG4 is an enlarged schematic diagram of a partial structure of the heat dissipation plate at position A from a side perspective in the embodiment shown in FIG3 ;

[0051] FIG5 is a schematic cross-sectional view of the heat dissipation plate in the embodiment shown in FIG3 from one side;

[0052] FIG6 is an enlarged schematic diagram of a partial structure of the heat dissipation plate at position B in the embodiment shown in FIG5 , from a side perspective;

[0053] FIG7 is a schematic structural diagram of the embodiment shown in FIG2 from a side perspective of the end plate;

[0054] FIG8 is a schematic cross-sectional view of the end plate of the embodiment shown in FIG7 from one side;

[0055] FIG9 is a schematic cross-sectional view of an end plate from one side in a possible embodiment;

[0056] FIG10 is a schematic structural diagram of a battery assembly from a side perspective in a possible embodiment;

[0057] FIG11 is a schematic structural diagram of a battery assembly from a side perspective in a possible embodiment;

[0058] FIG12 is a schematic structural diagram of a battery assembly from a side perspective in a possible embodiment;

[0059] FIG13 is a flowchart of the power consumption system of the present application.

[0060] Explanation of Reference Numerals: 10, battery assembly; 11, heat sink; 11a, side wall; 11b, through-hole; 11c, opening; 12, battery; 13, end plate; 13a, liquid inlet plate; 13b, liquid outlet plate; 14, thermal insulation; 111, air-cooling channel; 111a, air inlet end; 111b, air outlet end; 111c, heat dissipation fin; 112, liquid-cooling channel; 112a, liquid inlet end; 112b, liquid outlet end; 113, rib; 131, diverter channel; 131a, liquid inlet diverter channel; 131b, liquid outlet diverter channel; 1311, external interface; 1312, internal opening; 1311a, external interface; 1311b, external interface; 1312a, internal opening; 1312b, internal opening; 100. Battery device; 101. Housing; 1011. Ventilation hole. DETAILED DESCRIPTION

[0061] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0062] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. It should be noted that the terms "first," "second," and so on, in the specification, claims, and accompanying drawings of this application are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "include," "may include," "comprise," or "may include" as used in this application indicate the presence of the corresponding functions, operations, components, etc. disclosed, and do not limit the presence or absence of one or more additional functions, operations, components, etc. Furthermore, the terms "include" or "comprising" indicate the presence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0065] The present application provides an electricity consumption system, which includes an electricity consumption device and a battery device, and the battery device is used to supply power to the electricity consumption device.

[0066] Please refer to Figures 1 and 2 together. Figure 1 is a schematic diagram of the working scenario of the battery device 100 of the present application, and Figure 2 is a schematic diagram of the structure of the battery assembly 10 of the battery device 100 of the present application from a side perspective in the embodiment shown in Figure 1. As shown in Figures 1 and 2, the battery device 100 of the present application includes a housing 101 and a battery assembly 10. The battery assembly 10 is fixedly disposed within the housing 101 and is used to implement the charging, discharging, and power storage functions of the battery device 100.

[0067] The housing 101 is used to support and protect the battery assembly 10 and can provide a protective effect on the battery assembly 10 so that the battery assembly 10 can operate normally.

[0068] For example, in one possible embodiment, under external force impact such as falling, knocking, and collision, the shell 101 can provide protection and buffering for the battery assembly 10 and other functional structures provided inside the shell 101, so as to prevent external impact from causing damage to the internal functional structures of the battery assembly 10.

[0069] That is, by fixing the battery assembly 10 in the housing 101 , the service life and working stability of the battery assembly 10 can be improved, ensuring that the battery device 100 can perform normal and stable charging and discharging operations, thereby improving the user experience of the battery device 100 of the present application.

[0070] It should be noted that in the embodiment shown in FIG1 , only one possible structural shape and structural size of the shell 101 of the battery device 100 of the present application is used as an example for illustrative description, and other functional structural components that may be provided on the shell 101 are omitted.

[0071] That is, in the embodiment shown in FIG1 , the actual structural shape and actual structure of the shell 101 are not represented or limited thereto, and other functional structural components may be provided on the shell 101 of the battery device 100 to realize different functions of the battery device 100, and this application does not make any specific limitations on this.

[0072] Please refer to Figures 2 and 3 together. Figure 3 is a schematic structural diagram of the heat sink 11 of the battery assembly 10 from a side perspective in the embodiment shown in Figure 2. As shown in Figure 2, the battery assembly 10 includes a heat sink 11 and multiple batteries 12. The number of batteries 12 is multiple, and the multiple batteries 12 are placed on the heat sink 11, so that the heat sink 11 can support multiple batteries 12.

[0073] In the embodiment shown in FIG. 2 , a plurality of batteries 12 are sequentially arranged along a first direction 001 .

[0074] It should be noted that the embodiment shown in FIG2 is merely an example of one possible number of batteries 12, and does not limit the number of batteries 12 that can be arranged to this number. In other embodiments of the present application, the number of batteries 12 arranged on the heat sink 11 can be adjusted based on actual design requirements or actual charge and discharge rate requirements, and this application does not impose any restrictions on this.

[0075] It is understood that the battery assembly 10, by providing the battery 12, can realize the charging and discharging functions of the battery device 100. At the same time, by adjusting the number of batteries 12 placed on the heat sink 11, the battery assembly 10 can be charged and discharged at different rates to meet the different charging and discharging requirements of the battery device 100 of the present application, thereby expanding the applicable scenarios and scope of the battery device 100 of the present application.

[0076] Meanwhile, in the embodiment shown in FIG2 , only one possible structure and size of the battery 12 is used for illustrative purposes, but the structure and size of the battery 12 are not limited to this. In other embodiments of the present application, the structure and size of the battery 12 can also be adjusted according to actual design requirements, and this application does not limit this.

[0077] For a possible embodiment, please refer to Figures 3 and 4 . Figure 4 is an enlarged schematic diagram of the partial structure of the heat sink 11 at position A in the embodiment shown in Figure 3 . To clearly illustrate the structure of the protrusions 113 protruding from the surface of the heat sink 11, Figure 4 only uses one protrusion 113 as an example. A similar protrusion 113 is provided on the other side of the heat sink 11 along the second direction 002 .

[0078] In the embodiment shown in FIG. 4 , two ridges 113 are provided on the surface of the heat sink 11 where the batteries 12 are placed. The two ridges 113 work together to limit the displacement of the batteries 12 in the second direction 002 .

[0079] Specifically, as shown in FIG4 , two ridges 113 are arranged along the second direction 002 on opposite sides of the plurality of batteries 12. Each ridge 113 extends in the same direction as the arrangement of the plurality of batteries 12, that is, each ridge 113 extends along the first direction 001, thereby simultaneously limiting the displacement of the plurality of batteries 12 in the second direction 002.

[0080] In the embodiment shown in FIG. 4 , the spacing distance between the two ridges 113 in the second direction 002 is equal to the length of the battery 12 along the second direction 002 , so that the two ridges 113 respectively abut against opposite sides of the battery 12 in the second direction 002 , thereby achieving the effect of limiting the displacement of the battery 12 in the second direction 002 .

[0081] It can be understood that in this embodiment, by arranging two ridges 113 on opposite sides of a plurality of batteries 12 along the second direction 002, the two ridges 113 work together to limit the displacement of the plurality of batteries 12 in the second direction 002, thereby preventing the batteries 12 from shaking or moving, which would affect their working performance and stability.

[0082] Please refer to Figure 5, which is a schematic cross-sectional view of the heat sink 11 in the embodiment shown in Figure 3 from a side perspective. As shown in Figure 5, the heat sink 11 includes two heat sink surfaces F (as shown in Figure 3), which are arranged opposite each other and with a sidewall disposed between them. Specifically, the heat sink 11 is provided with a plurality of air cooling channels 111 and a plurality of liquid cooling channels 112.

[0083] The external air flowing in each air cooling channel 111 can remove the heat transferred from the batteries 12 to the heat sink 11 , thereby achieving air cooling and heat dissipation effects for the batteries 12 placed on the heat dissipation surface F of the heat sink 11 .

[0084] The coolant flowing in each liquid cooling channel 112 can remove the heat transferred from the batteries 12 to the heat sink 11 , thereby achieving a liquid cooling and heat dissipation effect for the batteries 12 placed on the heat sink 11 .

[0085] By setting up a plurality of air-cooling channels 111 and a plurality of liquid-cooling channels 112 integrated in the heat sink 11, both the air-cooling and liquid-cooling heat dissipation functions are realized through a single structural component of the heat sink 11, so that the internal structure of the battery assembly 10 can be simplified while simultaneously realizing air-cooling and liquid-cooling heat dissipation.

[0086] Specifically, as shown in Figure 5 , a plurality of air-cooling channels 111 and a plurality of liquid-cooling channels 112 are alternately arranged along a second direction 002, and each air-cooling channel 111 and each liquid-cooling channel 112 extends along a first direction 001. The first direction 001 intersects the second direction 002. In the embodiment shown in Figure 5 , the second direction 002 is perpendicular to the first direction 001, and both the first direction 001 and the second direction 002 are parallel to the plane of the heat sink 11.

[0087] That is, the arrangement direction of the plurality of air cooling channels 111 and the plurality of liquid cooling channels 112 is perpendicular to the arrangement direction of the plurality of batteries 12 on the heat sink 11 .

[0088] It is understandable that by arranging the air cooling channels 111 and the liquid cooling channels 112 in an alternating arrangement, with their arrangement direction perpendicular to the arrangement direction of the plurality of batteries 12, uniform heat dissipation can be achieved for the plurality of batteries 12 placed on the heat sink 11, thereby ensuring the heat dissipation effect of the heat sink 11 on each battery 12. This avoids the situation where the air cooling channels 111 and the liquid cooling channels 112 are arranged alternately and extend in the same direction as the batteries 12, resulting in uneven heat dissipation for each battery 12 when only air cooling or only liquid cooling is achieved.

[0089] Furthermore, as shown in FIG5 , each cooling channel 111 includes an air inlet end 111a and an air outlet end 111b opposite to each other along a first direction 001 . External air can flow in through the air inlet end 111a and out through the air outlet end 111b (the dotted arrows in FIG5 indicate the flow direction of external air within the cooling channel 111 ). The air inlet end 111a is suitable for air inflow, and the air outlet end 111b is suitable for air outflow.

[0090] By setting the air inlet end 111a and the air outlet end 111b, external air can flow into each air cooling channel 111 from the air inlet end 111a and flow out from the corresponding air outlet end 111b, thereby allowing external air to flow in each air cooling channel 111 and take away the heat transferred from the heat sink 11 to the air cooling channel 111 by the battery 12 during the flow.

[0091] In a possible embodiment, as shown in Figure 5, the heat sink 11 has two opposite side walls 11a along the first direction 001, and each air-cooling channel 111 penetrates the two side walls 11a along the first direction 001 and has through openings 11b formed on the two side walls 11a respectively. The through opening 11b on one side wall 11a is configured as an air inlet end 111a, and the through opening (not shown in the figure) on the other side wall (not shown in the figure) is configured as an air outlet end 111b.

[0092] By setting up each air-cooling channel 111 to directly penetrate the two side walls 11a of the heat dissipation plate 11, external air can directly flow into the corresponding air-cooling channel 111 from the through-hole 11b formed on the side wall 11a at the air inlet end 111a, and directly flow out from the through-hole 11b formed on the side wall 11a at the air outlet end 111b, thereby reducing the pipeline structure used to communicate with the air inlet end 111a or the air outlet end 111b, so as to further simplify the internal structure of the battery assembly 10 of the present application.

[0093] It should be noted that, in the embodiment shown in FIG5 , only one possible arrangement position of the air inlet end 111a and the air outlet end 111b is used as an example for illustrative description, but the arrangement positions of the air inlet end 111a and the air outlet end 111b are not limited to this.

[0094] In other embodiments of the present application, the air inlet end 111a and the air outlet end 111b may also, but are not limited to, be swapped along the first direction 001 (i.e., the flow direction of the external air in the air-cooling channel 111 may be opposite to the flow direction shown in FIG. 5 ), without affecting the air-cooling and heat dissipation function of each air-cooling channel 111. In other embodiments of the present application, the layout positions of the air inlet end 111a and the air outlet end 111b may be adjusted according to actual design requirements, for example, but not limited to, the air inlet end 111a and the air outlet end 111b being located on the same heat dissipation surface F.

[0095] For an embodiment, please refer to Figure 6 , which is an enlarged schematic diagram of the partial structure of the heat sink 11 in the embodiment shown in Figure 5 , viewed from a side at position B. At least one heat dissipation component is disposed within the cooling channel 111 , extending along a first direction 001 . Specifically, as shown in Figure 6 , each cooling channel 111 is provided with a plurality of heat dissipation fins 111 c . These heat dissipation fins 111 c are spaced apart from each other along a second direction 002 , and each heat dissipation fin 111 c extends along the first direction 001 .

[0096] 6 , two heat dissipating fins 111 c are provided in each cooling channel 111. The two heat dissipating fins 111 c in each cooling channel 111 are spaced apart from each other along the second direction 002, and each heat dissipating fin 111 c extends along the extension direction of the cooling channel 111.

[0097] In this embodiment, a plurality of heat dissipation fins 111c are provided in each air-cooling channel 111 to achieve a diversion effect on the external air flowing into each air-cooling channel 111, thereby ensuring the flow uniformity and flow stability of the external air in each air-cooling channel 111, thereby improving the heat dissipation effect of the air-cooling channel 111 on the battery.

[0098] By providing a plurality of heat dissipation fins 111 c in each air cooling channel 111 , the structural strength of the heat dissipation plate 11 can be improved, thereby ensuring the bearing effect and bearing stability of the plurality of batteries 12 .

[0099] It should be noted that in the embodiment shown in FIG6 , only two heat dissipating fins 111c are used as an example for illustrative purposes, but the number of heat dissipating fins 111c is not limited to this. In other embodiments of the present application, the number of heat dissipating fins 111c can be adjusted according to actual design requirements, and this application does not make specific restrictions on this.

[0100] Meanwhile, in the embodiment shown in FIG6 , only one possible structural dimension of the heat dissipating fin 111c is used as an example for illustrative description, but the structural dimension of the heat dissipating fin 111c is not limited to this. In other embodiments of the present application, the structural dimensions of the heat dissipating fin 111c, such as the thickness along the second direction 002 and the length along the first direction 001, can be adjusted according to actual design requirements, and this application does not impose specific limitations on this.

[0101] As shown in FIG. 6 , each heat dissipating fin 111 c penetrates two opposite side walls 11 a of the heat dissipating plate 11 along a first direction 001 .

[0102] 6 , each heat dissipating fin 111 c penetrates two opposite side walls 11 a of the heat dissipation plate 11 , and further separates through-holes 11 b opened on each side wall 11 a so that external air flows evenly from the air inlet end 111 a into each air cooling channel 111 .

[0103] Further, please continue to refer to Figures 3 and 5. As shown in Figure 3, each liquid cooling channel 112 includes an opposing liquid inlet end 112a and a liquid outlet end 112b along a first direction 001. The liquid inlet end 112a is adapted for liquid inflow, and the liquid outlet end 112b is adapted for liquid outflow. Cooling liquid provided by an external cooling source (not shown) can flow into each liquid inlet end 112a and return to the external cooling source from each liquid outlet end 112b (the flow direction of the cooling liquid in the embodiment shown in Figure 5 is indicated by the dashed arrows). It will be understood that the cooling liquid is a liquid.

[0104] Specifically, in the embodiments shown in Figures 3 and 5, each liquid cooling channel 112 is a cavity extending along the first direction 001, that is, the two side walls 11a of the heat sink 11 opposite to each other along the first direction 001 are in a closed state at the position corresponding to each liquid cooling channel 112.

[0105] The liquid inlet 112a and the liquid outlet 112b of each liquid cooling channel 112 are arranged on the surface of the heat sink 11 for supporting the batteries 12 , that is, the liquid inlet 112a and the liquid outlet 112b are arranged on the same heat dissipation surface F of the heat sink 11 .

[0106] For example, as shown in FIG3 , two openings 11 c are provided on the surface of the heat sink 11 that supports the plurality of batteries 12 , corresponding to opposite ends of each liquid cooling channel 112 . One opening 11 c serves as a liquid inlet 112 a of the liquid cooling channel 112 , and the other opening 11 c serves as a liquid outlet 112 b of the liquid cooling channel 112 .

[0107] It should be noted that in the embodiment shown in FIG3 , only one possible structure and layout position of the liquid inlet end 112a and the liquid outlet end 112b of each liquid-cooling channel 112 is used as an example for illustrative purposes, but the structure and layout position of the liquid inlet end 112a and the liquid outlet end 112b are not limited to this example. In other embodiments of the present application, the structure and layout position of the liquid inlet end 112a and the liquid outlet end 112b can be adjusted according to actual design requirements, and this application does not specifically limit this. For example, the liquid inlet end 112a and the liquid outlet end 112b can also be arranged on the side wall 11a.

[0108] For example, in one possible embodiment, the liquid inlet 112a and the liquid outlet 112b may be disposed on two opposite side walls 11a of the heat sink 11 along the first direction 001. Furthermore, the liquid inlet 112a and the liquid outlet 112b may both be connectors to communicate with external pipes to allow coolant to flow in and out.

[0109] At the same time, it should be noted that in Figure 5, the air inlet end 111a and the liquid inlet end 112a are located on the same side of the heat sink 11, and the air outlet end 111b and the liquid outlet end 112b are located on the same side of the heat sink 11 are used as an example for illustrative description, but it does not mean and limit that the air inlet end 111a and the liquid inlet end 112a can only be located on the same side of the heat sink 11, or the air outlet end 111b and the liquid outlet end 112b can only be located on the same side of the heat sink 11. In other embodiments of the present application, the air inlet end 111a can be located on the same side of the heat sink 11 as the liquid inlet end 112a, or can be located on the same side of the heat sink 11 as the liquid outlet end 112b, and this application does not limit this.

[0110] In one embodiment, please refer to Figures 2 and 7 . Figure 7 is a schematic structural diagram of the end plate 13 from a side perspective in the embodiment shown in Figure 2 . As shown in Figure 2 , the battery assembly 10 includes two plate-shaped end plates 13 , which are fixed to opposite sides of a plurality of batteries 12 along a first direction 001 . These end plates 13 can secure the batteries 12 arranged along the first direction 001 , thereby limiting displacement of the batteries 12 in the first direction 001 and preventing the batteries 12 from shaking or moving, which could affect their performance and stability.

[0111] The end plate 13 is fixed relative to the batteries 12 , and can be fixedly connected to the heat sink 11 or detachably connected thereto.

[0112] For example, in a possible embodiment, the end plate 13 and the heat dissipation plate 11 may be fixedly connected by screws, welding, or the like.

[0113] For example, in a possible embodiment, the end plates 13 and the heat sink 11 may be detachably connected by snapping or other means to facilitate placement or removal of the batteries 12 between the two end plates 13 .

[0114] In one possible embodiment, please continue to refer to Figure 2. As shown in Figure 2, the battery assembly 10 includes a heat insulating member 14, which is filled between the end plate 13 and the adjacent battery 12 to isolate the end plate 13 from heat transfer between the adjacent battery 12.

[0115] By arranging a heat insulating member 14 between the end plate 13 and the battery 12 adjacent thereto, the heat transfer between the end plate 13 and the battery 12 adjacent thereto can be isolated, ensuring that the heat generated by the battery 12 can only be transferred to the heat sink 11, thereby avoiding an increase in the heat dissipation surface of the battery 12 adjacent to the end plate 13, which would cause the temperature of the battery 12 adjacent to the end plate 13 to be too low or the temperature difference between the battery 12 and other positions to be too large, resulting in uneven heat dissipation affecting the working performance and working stability of the battery 12.

[0116] At the same time, by arranging a heat insulating member 14 between the end plate 13 and the adjacent battery 12, a buffering effect can be formed between the end plate 13 and the adjacent battery 12, thereby preventing the battery 12 from heating up and expanding to squeeze the end plate 13, thereby causing the end plate 13 to deform, affecting the service life and structural performance of the end plate 13, and preventing the battery 12 from shaking and affecting the structural stability of the end plate 13.

[0117] In a possible embodiment, the material of the thermal insulation component 14 may be, but is not limited to, thermal insulation cotton.

[0118] In one possible embodiment, please refer to Figures 7 to 9. Figure 8 is a schematic cross-sectional view of the end plate 13 from one side of the embodiment shown in Figure 7. Figure 9 is a schematic cross-sectional view of the end plate 13 from one side of the embodiment. At least one end plate 13 is provided with a diverter channel 131, which connects the external cooling source to each of the liquid cooling channels 112.

[0119] In the embodiment shown in FIG. 8 , the diversion channel 131 includes an external interface 1311 and a plurality of internal openings 1312 . The external interface 1311 and the plurality of internal openings 1312 are in communication with each other, and the external interface 1311 is in communication with an external cold source.

[0120] By setting an external interface 1311 to be connected to an external cold source, and setting the external interface 1311 and multiple internal openings 1312 to be connected to each other, the cooling liquid provided by the external cold source can flow from the external interface 1311 into the diversion channel 131, and be diverted to the multiple internal openings 1312 to flow out, so as to achieve the diversion effect.

[0121] Alternatively, the coolant may flow from each internal opening 1312 into the diversion channel 131 and flow outward from the external interface 1311 to merge the coolant and flow toward the external cooling source, thereby achieving a reflux effect.

[0122] By setting the shunt channel 131 in the end plate 13, it is possible to avoid setting up separate connecting pipes between the external cold source and each liquid cooling channel 112, so as to fully utilize the structure of the end plate 13 and further simplify the structural design of the battery assembly 10 of the present application.

[0123] In one embodiment, the two end plates 13 are respectively a liquid inlet plate 13a and a liquid outlet plate 13b, wherein the liquid inlet plate 13a is closer to the liquid inlet end 112a of the liquid cooling channel 112 than the liquid outlet plate 13b along the first direction 001, and the liquid inlet plate 13a and the liquid outlet plate 13b are respectively fixed on opposite sides of the plurality of batteries 12 along the first direction 001.

[0124] By arranging the liquid inlet plate 13a and the liquid outlet plate 13b to be fixed on opposite sides of the plurality of batteries 12 along the first direction 001, a holding effect can be formed on the plurality of batteries 12 arranged along the first direction 001, so as to limit the displacement of the plurality of batteries 12 in the first direction 001, thereby preventing the batteries 12 from shaking or moving, etc., which may affect their working performance and working stability.

[0125] The liquid inlet plate 13a is provided with a liquid inlet interface and a liquid inlet flow channel, and the liquid inlet flow channel is connected to each liquid cooling channel 112 so that the liquid flows into each liquid cooling channel 112 through the liquid inlet interface. Specifically, the liquid inlet interface is connected to each liquid cooling channel 112 so that the liquid flows into each liquid cooling channel 112 through the liquid inlet interface.

[0126] The liquid inlet plate 13a is provided with a liquid inlet diversion channel 131a. The liquid inlet interface is connected to the liquid inlet flow channel, which is connected to multiple liquid inlet diversion channels 131a. The liquid inlet diversion channels 131a are connected to each liquid cooling channel 112, so that liquid flows into each liquid cooling channel 112 through the liquid inlet interface. Specifically, the liquid inlet diversion channels 131a are connected between the liquid inlet interface and each liquid cooling channel 112, and are used to divert liquid output from the liquid inlet interface to each liquid cooling channel 112.

[0127] As shown in Figure 8, the liquid inlet interface (that is, the external interface 1311a) of the liquid inlet diversion channel 131a in the liquid inlet plate 13a is connected to the external cold source, and the cooling liquid provided by the external cold source flows from the liquid inlet interface of the external interface into the liquid inlet diversion channel 131a.

[0128] Each internal opening 1312a of the liquid inlet diversion channel 131a provided in the liquid inlet plate 13a is respectively arranged to correspond to a liquid inlet end 112a, and is respectively connected to its corresponding liquid inlet end 112a, so that the cooling liquid flowing into the liquid inlet diversion channel 131a can flow from each internal opening 1312a of the liquid inlet diversion channel 131a to the corresponding liquid inlet end 112a and flow into each liquid cooling channel 112, thereby forming a diversion effect on the cooling liquid.

[0129] In one embodiment, the liquid inlet port is located on the side of the liquid inlet plate 13a.

[0130] As shown in Figure 9, the liquid outlet plate 13b is closer to the liquid outlet end 112b of the liquid cooling channel 112 than the liquid inlet plate 13a along the first direction 001. The liquid outlet plate 13b is provided with a liquid outlet interface and a liquid outlet flow channel. The liquid outlet flow channel is connected to each liquid cooling channel 112 so that the liquid flowing out of each liquid cooling channel 112 flows out through the liquid outlet interface.

[0131] The liquid outlet plate 13b is also provided with multiple liquid outlet diversion channels 131b, each liquid cooling channel 112 is connected to each liquid outlet diversion channel 131b, multiple liquid outlet diversion channels 131b are connected to the liquid outlet flow channel, and the liquid outlet interface is connected to the liquid outlet flow channel so that the liquid flowing out of each liquid cooling channel 112 flows out from the liquid outlet interface.

[0132] It can be understood that the liquid outlet interface (also known as the external interface 1311b) of the liquid outlet diversion channel 131b located within the liquid outlet plate 13b is connected to an external cooling source. Each internal opening 1312b of the liquid outlet diversion channel 131b is arranged corresponding to a liquid outlet end 112b, and each internal opening 1312b of the liquid outlet diversion channel 131b is connected to its corresponding liquid outlet end 112b. The cooling liquid carrying heat flowing out of each liquid outlet end 112b flows through the corresponding internal opening 1312b of the liquid outlet diversion channel 131b into the liquid outlet diversion channel 131b and then flows back to the external cooling source from the liquid outlet interface.

[0133] It can be understood that by arranging each internal opening 1312b of the liquid outlet diversion channel 131b to be connected to a liquid outlet end 112b, the coolant carrying heat flowing out of the liquid outlet end 112b of each liquid cooling channel 112 can flow from each internal opening 1312b of the corresponding liquid outlet diversion channel 131b to the inside of the liquid outlet diversion channel 131b, thereby forming a merging effect. By arranging the liquid outlet interface of the liquid outlet diversion channel 131b to be connected to an external cold source, the coolant carrying heat that merges into the liquid outlet diversion channel 131b can flow back to the external cold source from the external interface 1311b.

[0134] In one embodiment, the liquid outlet port is located on the side of the liquid outlet plate 13b.

[0135] In other words, in the embodiments shown in Figures 8 and 9, by providing a diverter channel 131 in both end plates 13 (that is, the liquid inlet plate 13a and the liquid outlet plate 13b), and setting each internal opening 1312 of a diverter channel 131 to be connected to a liquid inlet end 112a respectively, and each internal opening 1312 of the other diverter channel 131 to be connected to a liquid outlet end 112b respectively, one diverter channel 131 has the function of diverting the cooling liquid, and the other diverter channel 131 has the function of returning the cooling liquid carrying heat, so that the two end plates 13 are fully utilized to further simplify the structural design of the battery assembly 10 of the present application and reduce the manufacturing cost of the battery assembly 10.

[0136] For one embodiment, please refer back to Figure 2. As shown in Figure 2, the liquid inlet port of the liquid inlet plate 13a (illustrated as the external port 1311a in Figure 2) and the liquid outlet port of the liquid outlet plate 13b (illustrated as the external port 1311b in Figure 2) are both located on the same side of the plurality of batteries 12 along the second direction 002. That is, the external ports 1311 of the two diversion channels 131 are both located on the same side of the two end plates 13 along the second direction 002.

[0137] By setting the external interfaces 1311 of the two shunt channels 131 on the same side of the two end plates 13 along the second direction 002, it is possible to facilitate the connection of the two external interfaces 1311 with the external cold source, avoid setting too many pipes in the battery assembly 10 to connect the various external interfaces 1311 with the external cold source, and further simplify the structural design of the battery assembly 10 of the present application.

[0138] For an example embodiment, please refer to Figure 10, which is a schematic diagram of the structure of a battery assembly 10 from a side perspective in one possible embodiment. As shown in Figure 10, the number of battery assemblies 10 provided in the battery device 100 can be multiple, and the multiple battery assemblies 10 are stacked in a direction perpendicular to the plane of the heat sink 11 of the battery assembly 10.

[0139] Specifically, in the embodiment shown in FIG. 10 , a plurality of battery assemblies 10 are stacked along a third direction 003 , and the third direction 003 is perpendicular to the plane direction of the heat dissipation plate 11 .

[0140] In this embodiment, by providing multiple battery assemblies 10, the charging and discharging requirements of the battery device 100 of the present application at different rates can be met, and the different capacities of the battery device 100 can be met, thereby improving the scope of application and compatibility of the battery device 100 of the present application.

[0141] At the same time, by arranging multiple battery assemblies 10 to be stacked along a planar direction perpendicular to the heat dissipation plate 11 of the battery assembly 10, several batteries 12 in each battery assembly 10 are provided with heat dissipation plates 11 on opposite sides along the third direction 003, so that heat can be dissipated from the battery 12 on opposite sides along the third direction 003 at the same time, thereby expanding the heat dissipation surface of the battery 12 and further improving the heat dissipation effect of the battery 12.

[0142] For an embodiment, please refer to Figures 1 and 11. Figure 11 is a schematic structural diagram of a battery assembly 10 from a side perspective in a possible embodiment. As shown in Figures 1 and 11, the battery device 100 of the present application includes a fan, which is fixed to the housing 101. The housing 101 has ventilation holes 1011. The fan is used to introduce external air from the ventilation holes 1011 into the air inlet ends 111a of each air-cooling channel 111, and drive the external air flowing out of the air outlet ends 111b of each air-cooling channel 111 to flow out of the housing 101 through the ventilation holes 1011.

[0143] Through the cooperation between the fan and the ventilation holes 1011, external air is introduced from the ventilation holes 1011 into the air inlet ends 111a of each air cooling channel 111, and the external air flowing out from the air outlet ends 111b of each air cooling channel 111 is driven to flow out of the housing 101 through the ventilation holes 1011. This achieves the effect of external air circulation and heat exchange within the housing 101 and each air cooling channel 111.

[0144] At the same time, the fan and the ventilation holes 1011 have a simple structural design and are easy to implement, which can simplify the structural design of the battery device 100 and reduce the manufacturing cost of the battery device 100.

[0145] It should be noted that the embodiment shown in FIG11 illustrates only one possible heat exchange method for each cooling channel 111, but does not limit the heat exchange method of each cooling channel 111 in other embodiments of the present application to this method. In other embodiments of the present application, the heat exchange method of each cooling channel 111 can be adjusted based on the actual structural design of the battery device 100.

[0146] For example, in one possible embodiment, the air inlet 111a and air outlet 111b of each cooling channel 111 can be connected to an air conditioner via an external air duct. That is, the heated external air flowing out of the air outlet 111b of the cooling channel 111 is directed to the air conditioner via the external air duct, where it undergoes heat exchange in the air conditioner heat exchanger and is blown out as cold air. The blown cold air is then directed to each air inlet 111a via the external air duct, thereby forming a cooling and heat dissipation cycle effect of "cold air - cooling channel 111 - hot air - heat exchange - cold air."

[0147] For an example embodiment, please refer to Figure 12, which is a schematic diagram of the structure of a battery assembly 10 from a side perspective in one possible embodiment. In the implementation shown in Figure 12, multiple battery assemblies 10 are stacked along a third direction 003, and the liquid inlet interface of the liquid inlet plate 13a and the liquid outlet interface of the liquid outlet plate 13b of each battery assembly 10 are connected to an external cooling source via pipelines.

[0148] The cooling liquid provided by the external cold source flows through the pipeline to the external interface 1311a of each liquid inlet plate 13a, flows from the external interface 1311a to the liquid inlet diversion channel 131a, and then flows through the internal opening 1312a of the liquid inlet diversion channel 131a in each liquid inlet plate 13a to the corresponding liquid inlet end 112a, and then flows to each liquid cooling channel 112.

[0149] The coolant flows in each liquid cooling channel 112 and takes away the heat transferred by each battery 12, and flows from the liquid outlet end 112b of each liquid cooling channel 112 to the corresponding internal opening 1312b, and then merges to the external interface 1311b through the liquid outlet diversion channel 131b in each liquid outlet plate 13b, and then flows back to the external cold source through the pipeline.

[0150] That is, the coolant carrying heat flowing out of the liquid inlet end 112a of the liquid cooling channel 112 is drained to the external cold source through an external pipeline, and heat is exchanged through the external cold source to provide low-temperature coolant. The coolant is drained to each liquid inlet end 112a through an external pipeline to form a liquid cooling heat dissipation cycle effect of "cooling liquid-liquid cooling channel 112-cooling liquid carrying heat-heat exchange-cooling liquid".

[0151] The external cold source may be an air conditioning heat exchanger or a heat exchange device of other structures.

[0152] Battery packs, which are usually equipped with both air-cooling and liquid-cooling systems, have complex internal structures and high manufacturing costs.

[0153] The battery assembly 10 of the present application is integrated into the heat sink 11 by setting up a plurality of air-cooling channels 111 and a plurality of liquid-cooling channels 112, so that both the air-cooling and liquid-cooling heat dissipation functions are realized through a single structural component of the heat sink 11, so as to achieve compatibility between air-cooling and liquid-cooling heat dissipation, greatly simplify the internal structure of the battery assembly 10, and reduce the manufacturing cost of the battery assembly 10 of the present application.

[0154] It should be noted that while this application can implement both air cooling and liquid cooling, it does not mean that both can only operate simultaneously. When the battery assembly 10 is under different charging or discharging rates, air cooling or liquid cooling can be selected based on the different operating conditions of the battery assembly 10 to ensure heat dissipation while saving energy.

[0155] That is, in the embodiment of the present application, air cooling and liquid cooling can be performed separately or simultaneously to meet the heat dissipation requirements of the battery assembly 10 under different working conditions, thereby improving the scope of application and use effect of the battery assembly 10 of the present application.

[0156] Because the battery assembly 10 of the present application adopts the heat dissipation plate 11 described in any of the above embodiments, the battery assembly 10 of the present application has all possible beneficial effects of the heat dissipation plate 11 described in any of the above embodiments.

[0157] Because the battery device 100 of the present application includes the battery assembly 10 in any of the above embodiments, the battery device 100 of the present application has all possible beneficial effects of the battery assembly 10 in any of the above embodiments.

[0158] Referring to Figure 13, an embodiment of the present application further provides an electrical system, which may include an electrical device and the aforementioned battery device 100, wherein the battery device 100 is capable of supplying power to the electrical device. By using the aforementioned battery device 100 to supply power to the electrical device, the battery device 100 utilizes the aforementioned battery assembly 10 with the aforementioned heat sink 11, thereby enabling compatibility of air cooling and liquid cooling on the battery device 100, improving the heat dissipation efficiency of the battery device 100, ensuring the operating stability of the battery device 100, and improving the operating stability of the electrical system.

[0159] Because the power system of the present application adopts the battery device 100 described in any of the above embodiments, the power system of the present application has all possible beneficial effects of the battery device 100 described in any of the above embodiments.

[0160] It should be understood that the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of this application, "plurality" means two or more, unless otherwise specifically defined.

[0161] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations 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 any one or more embodiments or examples.

[0162] It should be understood that the application of this application is not limited to the above examples. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the scope of protection of the claims appended to this application. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A heat sink (11), the heat sink (11) being provided with at least one air cooling channel (111) and at least one liquid cooling channel (112), the air cooling channel (111) being provided with an air inlet end (111a) and an air outlet end (111b), the air inlet end (111a) being suitable for air to flow in, the air outlet end (111b) being suitable for air to flow out, the liquid cooling channel (112) being provided with a liquid inlet end (112a) and a liquid outlet end (112b), the liquid inlet end (112a) being suitable for liquid to flow in, the liquid outlet end (112b) being suitable for liquid to flow out; The heat dissipation plate (11) comprises two heat dissipation surfaces, a side wall (11a) is arranged between the two heat dissipation surfaces, and the two heat dissipation surfaces are arranged back to back; The liquid inlet end (112a) and the liquid outlet end (112b) are located on the heat dissipation surface or are arranged on the side wall (11a).

2. According to the heat sink (11) of claim 1, the liquid inlet end (112a) and the liquid outlet end (112b) are located on the heat dissipation surface, and the air inlet end (111a) and the air outlet end (111b) are arranged on the side wall (11a).

3. According to the heat sink (11) of claim 1, the air inlet end (111a) and the air outlet end (111b) are arranged on the heat dissipation surface, and the liquid inlet end (112a) and the liquid outlet end (112b) are arranged on the side wall (11a).

4. According to the heat sink (11) of claim 1, the liquid inlet end (112a) and the liquid outlet end (112b) are located on the same heat dissipation surface, and the air inlet end (111a) and the air outlet end (111b) are respectively arranged on two oppositely arranged side walls (11a).

5. According to the heat sink (11) according to any one of claims 1 to 4, the air cooling channel (111) and the liquid cooling channel (112) extend along a first direction, the air cooling channel (111) and the liquid cooling channel (112) are alternately arranged along a second direction, and the first direction intersects with the second direction.

6. The heat sink (11) according to claim 5, comprises two side walls (11a), the two side walls (11a) are connected between the two heat dissipation surfaces, the air inlet end (111a) and the air outlet end (111b) are respectively arranged on the two side walls (11a) along the first direction and relative to each other, and the first direction is perpendicular to the second direction.

7. The heat dissipation plate (11) according to claim 5, wherein at least one heat dissipation component is disposed in the air cooling channel (111), and the heat dissipation component extends along the first direction.

8. The heat dissipation plate (11) according to claim 7, wherein the heat dissipation component comprises heat dissipation fins (111c), a plurality of the heat dissipation fins (111c) are provided in the air cooling channel (111), and the plurality of heat dissipation fins (111c) are spaced apart along the second direction.

9. A battery assembly (10), comprising a battery (12) and a heat sink (11) according to any one of claims 1 to 8, wherein the heat sink (11) is used to dissipate heat from the battery (12).

10. According to the battery assembly (10) according to claim 9, the number of the batteries (12) is multiple, and the multiple batteries (12) are arranged in sequence along a first direction, and the first direction is the extension direction of the air cooling channel (111) or the liquid cooling channel (112) in the heat sink (11).

11. The battery assembly (10) according to claim 10, wherein the battery assembly (10) comprises a liquid inlet plate (13a) and a liquid outlet plate (13b) of a plate-like structure, wherein the liquid inlet plate (13a) and the liquid outlet plate (13b) are respectively fixed to opposite sides of the plurality of batteries (12) along the first direction.

12. According to the battery assembly (10) according to claim 11, the liquid inlet plate (13a) is provided with a liquid inlet interface and a liquid inlet channel, and the liquid inlet channel is connected to each of the liquid cooling channels (112) so that the liquid flows into each of the liquid cooling channels (112) through the liquid inlet interface.

13. According to the battery assembly (10) according to claim 12, the liquid inlet plate (13a) is also provided with a plurality of liquid inlet diversion channels (131a), the liquid inlet interface is connected to the liquid inlet flow channel, the liquid inlet flow channel is connected to the plurality of liquid inlet diversion channels (131a), and the liquid inlet diversion channel (131a) is connected to each of the liquid cooling channels (112), so that the liquid flows into each of the liquid cooling channels (112) through the liquid inlet interface.

14. The battery assembly (10) according to claim 12, wherein the liquid inlet interface is located on a side of the liquid inlet plate (13a).

15. According to the battery assembly (10) according to claim 11, the liquid outlet plate (13b) is provided with a liquid outlet interface and a liquid outlet channel, and the liquid outlet channel is connected to each of the liquid cooling channels (112) so that the liquid flowing out of each of the liquid cooling channels (112) flows out from the liquid outlet interface.

16. According to the battery assembly (10) according to claim 15, the liquid outlet plate (13b) is also provided with a plurality of liquid outlet diversion channels (131b), each of the liquid cooling channels (112) is connected to each of the liquid outlet diversion channels (131b), the plurality of liquid outlet diversion channels (131b) are connected to the liquid outlet flow channel, and the liquid outlet interface is connected to the liquid outlet flow channel, so that the liquid flowing out of each of the liquid cooling channels (112) flows out from the liquid outlet interface.

17. The battery assembly (10) according to claim 15, wherein the liquid outlet interface is located on a side of the liquid outlet plate (13b).

18. According to the battery assembly (10) according to any one of claims 9 to 17, two convex strips (113) are provided on the same heat dissipation surface of the heat dissipation plate (11), and the two convex strips (113) are arranged at intervals along a second direction, and the two convex strips (113) are used to limit the displacement of the battery (12) along the second direction, and the second direction is the direction in which the air cooling channel (111) and the liquid cooling channel (112) in the heat dissipation plate (11) are alternately arranged.

19. A battery device (100), comprising: A shell (101) and a battery assembly (10) as claimed in any one of claims 9 to 18, wherein the battery assembly (10) is fixed in the shell (101), and the shell (101) is used to protect the battery assembly (10).

20. The battery device according to claim 19, further comprising: A fan is fixedly mounted on the housing (101), and is used to introduce external air into the air inlet end (111a) of each air cooling channel (111).

21. The battery device according to claim 19, wherein the number of the battery assemblies (10) is plural, and the plurality of battery assemblies (10) are stacked in a direction perpendicular to the plane of the heat dissipation plate (11) of the battery assembly (10).

22. An electricity system, comprising an electricity device and a battery device, wherein the battery device is used to supply power to the electricity device, and the battery device comprises the battery device as claimed in any one of claims 19 to 21.

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