Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, the battery device comprises a battery monomer, and the battery monomer comprises a shell and an electrode assembly. Wherein the shell is provided with a mounting cavity and a mounting port, and the mounting port is communicated with the mounting cavity; the shell is further provided with a cooling channel, a channel inlet and a channel outlet, wherein the channel inlet and the channel outlet are communicated with the cooling channel. The electrode assembly is arranged in the installation cavity. According to the technical scheme, the shell of the battery device is provided with the liquid cooling structure, so that the structure of a battery cooling system can be simplified, the space occupation of the battery cooling system is reduced, the space utilization rate of the battery monomers is improved, and the energy density of the battery device is improved; and meanwhile, a direct cooling mode is adopted for cooling, so that the cooling effect of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery device technology, and in particular to a battery device and an electrical appliance. Background Technology

[0002] When electrical devices are in operation, their temperature rises. Therefore, battery devices typically include a battery cooling system located near the individual battery cells to cool them down. However, due to the large number of battery cells in a battery device, the structure of the battery cooling system becomes quite complex, resulting in a large space requirement and affecting the battery's energy density. Utility Model Content

[0003] The main objective of this application is to provide a battery device designed to improve the energy density of a battery.

[0004] To achieve the above objectives, the battery device proposed in this application includes a battery cell, which includes:

[0005] The housing has a mounting cavity and a mounting port, the mounting port communicating with the mounting cavity; the housing also has a cooling channel and a channel inlet and a channel outlet communicating with the cooling channel, the cooling channel being isolated from the mounting cavity; and

[0006] Electrode assembly, which is located inside the mounting cavity.

[0007] The technical solution of this application integrates cooling channels directly into the casing, allowing the battery cell casing to incorporate a liquid cooling structure. Therefore, the battery cell casing can be considered "part" of the battery cooling system, simplifying its structure, reducing its space requirements, and thus improving the space utilization of the battery cell and increasing the energy density of the battery device.

[0008] Optionally, the housing includes:

[0009] Base plate; and

[0010] The side panel is connected to the base plate and surrounds the perimeter of the base plate. The side panel and the base plate are configured to form an installation cavity. The side of the side panel away from the base plate is configured to form an installation opening. The side panel is provided with a cooling channel, a channel inlet and a channel outlet.

[0011] This improves the convenience of setting up cooling channels, increases the coverage area of ​​cooling channels to increase the heat exchange area, and improves the cooling effect on battery devices.

[0012] Optionally, the side panels are a single-piece structure.

[0013] This improves the sealing of the cooling channels and the strength of the side panels.

[0014] Optionally, the side panel includes:

[0015] Two first side plates, the two first side plates being arranged at intervals relative to each other in a first direction; and

[0016] Two second side plates are arranged at relative intervals in a second direction intersecting the first direction. The area of ​​the second side plate is smaller than that of the first side plate. At least one first side plate is provided with a cooling channel, a channel inlet, and a channel outlet.

[0017] Therefore, by simplifying the structure of the cooling channel, the coverage area of ​​the cooling channel can be increased as much as possible to increase the heat exchange area and improve the heat dissipation effect of the battery device.

[0018] Optionally, both the passage entrance and the passage exit are located on the side of the side panel away from the installation opening.

[0019] This facilitates the subsequent stacking of individual battery cells and allows the coolant to fully fill the cooling channels, thereby improving heat dissipation.

[0020] Optionally, the base plate and mounting ports are spaced apart in the third direction, and at least part of the cooling channels are arranged in a reciprocating tortuous manner in the third direction.

[0021] This allows for the extension of the cooling channel, increasing its coverage area and thus the heat exchange area, thereby improving the heat dissipation effect on the battery device.

[0022] Optionally, the cooling channel includes:

[0023] Main road, the main road and the passage entrance are connected;

[0024] Diversion channels, at least two of which have one end connected to the main channel; and

[0025] A confluence channel, one end of which is connected to the end of at least two branch channels away from the main channel, and the other end of which is connected to the channel outlet.

[0026] This increases both the flow area of ​​the cooling channel and the liquid flow efficiency of the cooling channel.

[0027] Optionally, the battery device also includes a liquid cooling bracket, which is provided with a liquid passage, a liquid inlet, a liquid outlet, a first liquid outlet, and a second liquid outlet;

[0028] The inlet, outlet, first liquid passage, and second liquid passage are all connected to the liquid passage channel. The channel inlet is connected to the first liquid passage, and the channel outlet is connected to the second liquid passage.

[0029] This allows for easy connection with components such as radiators in the battery cooling system, forming a cooling flow path circulation.

[0030] Optionally, the liquid cooling support is an integral structure.

[0031] This helps to simplify the number of liquid cooling brackets while improving the support effect on individual battery cells.

[0032] Optionally, the liquid passage includes:

[0033] The inlet channel, the inlet port, and the first outlet are all connected to the inlet channel; and

[0034] The liquid outlet channel is isolated from the liquid inlet channel, and the liquid outlet and the second liquid outlet are both connected to the liquid outlet channel.

[0035] This allows for a reduction in the size of the fluid passage, thereby reducing the amount of coolant used and lowering operating costs.

[0036] Optionally, the liquid cooling support includes:

[0037] The first frame, the first frame is provided with a liquid inlet channel, a liquid inlet and a first liquid outlet; and

[0038] The second frame is equipped with a liquid outlet channel, a liquid outlet, and a second liquid passage.

[0039] This reduces the size of the liquid cooling support, thereby reducing its space requirements.

[0040] Optionally, the number of battery cells is multiple, and the liquid cooling bracket is provided with multiple first liquid inlets and multiple second liquid inlets;

[0041] Each battery cell has its inlet channel connected to a first liquid outlet, and its outlet channel connected to a second liquid outlet.

[0042] This improves the power supply efficiency of the battery device, while allowing multiple battery cells to be paired and used with fewer liquid cooling brackets, thus simplifying the number of liquid cooling brackets required.

[0043] Optionally, multiple battery cells are arranged along a first direction to form a battery module, and the battery device includes at least two battery modules, which are arranged along a second direction intersecting the first direction.

[0044] The number of liquid cooling brackets is at least two, and each liquid cooling bracket corresponds to one battery module.

[0045] Therefore, the power supply efficiency of the battery device can be improved by using multiple battery cells, and the volume of the liquid cooling bracket can be reduced and its manufacturing convenience can be improved by matching the liquid cooling bracket with the battery module one by one.

[0046] Optionally, the liquid cooling bracket is provided with a first positioning groove, and the first liquid inlet and the second liquid inlet are both connected to the first positioning groove, and the battery cell is disposed in the first positioning groove.

[0047] And / or, the liquid cooling bracket is provided with a first liquid passage pipe, the first liquid passage pipe is connected to a first liquid passage port, and is at least partially inserted into the channel inlet;

[0048] And / or, the liquid cooling support is provided with a second liquid passage pipe, which is connected to a second liquid passage port and is at least partially inserted into the channel outlet;

[0049] And / or, on one side of the stacked battery cell on the liquid cooling support, the liquid inlet and liquid outlet are located on the side of the liquid cooling support facing the battery cell; the battery cell is provided with a first extension tube and a second extension tube, the first extension tube is connected to the liquid inlet and extends along the direction of the liquid cooling support facing the battery cell, and the second extension tube is connected to the liquid outlet and extends along the direction of the liquid cooling support facing the battery cell.

[0050] Therefore, the stability of the battery cell on the liquid cooling bracket can be improved by the first positioning groove, the sealing between the liquid cooling bracket and the battery cell can be improved by the first liquid passage pipe and the second liquid passage pipe, and the connection position along the outflow path can be easily connected to the pipeline connected to the heat sink on the battery cooling system.

[0051] Optionally, the battery device also includes a housing, with individual battery cells housed inside the housing. The housing is provided with a liquid channel, a liquid inlet, a liquid outlet, a first connecting port, and a second connecting port.

[0052] The liquid inlet, liquid outlet, first connecting port, and second connecting port are all connected to the liquid channel. The channel inlet is connected to the first connecting port, and the channel outlet is connected to the second connecting port.

[0053] Therefore, by directly utilizing the battery device to set up the liquid channel, the number of components of the battery device can be simplified, thereby improving the convenience of battery device assembly and the space utilization efficiency of individual battery cells.

[0054] Optionally, the housing is provided with a second positioning groove, and both the first connecting port and the second connecting port are connected to the second positioning groove, and the battery cell is located in the second positioning groove;

[0055] And / or, the number of battery cells is multiple, the housing is provided with multiple first connection ports and second connection ports, the channel inlet of each battery cell is connected to a first connection port, and the channel outlet of each battery cell is connected to a second connection port.

[0056] And / or, the housing is provided with a first connecting pipe, the first connecting pipe is connected to a first connecting port, and is at least partially inserted into the channel inlet;

[0057] And / or, the housing is provided with a second connecting pipe, which is connected to a second connecting port and is at least partially inserted into the channel outlet.

[0058] Therefore, the second positioning groove can improve the stability of the battery cell installation in the box, multiple battery cells can improve the function of the battery device, and the setting of multiple first and second connecting ports can realize the pairing and use of one box with multiple battery cells. The setting of the first connecting pipe can improve the sealing of the connection between the box and the battery cell.

[0059] This application also proposes an electrical device including the aforementioned battery device. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0061] Figure 1 This is a schematic diagram of the structure of an embodiment of the battery device of this application;

[0062] Figure 2 for Figure 1 Another perspective illustration;

[0063] Figure 3 for Figure 1 A schematic diagram of an explosion structure;

[0064] Figure 4 for Figure 3 A cross-sectional view of the shell in the middle;

[0065] Figure 5 This is a schematic diagram of another embodiment of the battery device of this application;

[0066] Figure 6 for Figure 5 A schematic diagram of the exploded structure;

[0067] Figure 7 for Figure 6 Another perspective illustration;

[0068] Figure 8 for Figure 6 A schematic diagram of the liquid cooling support structure in the diagram;

[0069] Figure 9 for Figure 8 Another perspective illustration;

[0070] Figure 10 for Figure 9 A cross-sectional view at point A-A;

[0071] Figure 11 for Figure 9 A cross-sectional view at point B-B;

[0072] Figure 12 This is a schematic diagram of the structure of another embodiment of the battery device of this application;

[0073] Figure 13 This is a schematic diagram of the structure of another embodiment of the battery device of this application;

[0074] Figure 14 for Figure 13 A schematic diagram of the exploded structure;

[0075] Figure 15 for Figure 14 A schematic diagram of the liquid cooling support structure in the diagram;

[0076] Figure 16 for Figure 15 A cross-sectional schematic diagram of the first frame in the middle;

[0077] Figure 17 for Figure 15 A cross-sectional schematic diagram of the second frame in the middle;

[0078] Figure 18 This is a schematic diagram of the structure of another embodiment of the battery device of this application;

[0079] Figure 19 This is a schematic diagram of the structure of another embodiment of the battery device of this application;

[0080] Figure 20 for Figure 19 A schematic diagram of the exploded structure;

[0081] Figure 21 for Figure 20 A schematic diagram of the structure of the box in the middle;

[0082] Figure 22 for Figure 21 Schematic diagram of the cross section at point C-C;

[0083] Figure 23 for Figure 21 Schematic diagram of the cross section at point E-E;

[0084] Figure 24 This is a schematic diagram of another embodiment of the liquid cooling channel on a single battery cell in the battery device of this application.

[0085] Explanation of icon numbers:

[0086] label name label name 100 Battery device 30a2 Liquid outlet channel 10 battery cell 30b Inlet 11 case 30c Liquid outlet 11a Mounting cavity 30d First liquid outlet 11b Installation port 30e Second liquid outlet 11c Cooling aisle 31 First frame 11c1 mainstream 33 Second frame 11c2 Diversion Channel 30f First positioning groove 11c3 Convergence channel 35 First liquid passage tube 11d Channel entrance 36 Second liquid passage tube 11e Channel Exit 37 First extension tube 111 base plate 38 Second extension tube 113 Side panels 40 Box 1131 First side panel 40a Liquid Channel 1133 Second side panel 40b Liquid delivery port 13 Electrode assembly 40c drain port 15 Top cover 40d First connection port 20 Battery Module 40e Second connection port 30 Liquid cooling bracket 40f Second positioning groove 30a Liquid passage 41 First connecting tube 30a1 Inlet channel 43 Second connecting pipe

[0087] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0088] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0089] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0090] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0091] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0092] Battery devices mentioned in this field can be classified into primary batteries and rechargeable batteries based on whether they are rechargeable. Common types of rechargeable batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries are currently widely used in pure electric vehicles and hybrid vehicles. Lithium-ion batteries used for these applications have relatively lower capacity but higher output and charging current, and longer lifespan, but are also more expensive.

[0093] The battery device described in this application refers to a rechargeable battery. The embodiments disclosed in this application will primarily use lithium-ion batteries as an example to describe the specific implementation. It should be understood that the embodiments disclosed in this application are applicable to any other suitable type of rechargeable battery. The battery devices mentioned in the embodiments disclosed in this application can be directly or indirectly applied to suitable devices to power those devices.

[0094] Furthermore, the battery device mentioned in this application can be a single physical module comprising one or more battery cells to provide a predetermined voltage and capacity; it can be a battery module or a battery pack. A battery cell is the basic unit in a battery device and can be used to manufacture a battery module or battery pack. A battery module is formed by connecting a certain number of battery cells in series and / or parallel and placing them in a frame to protect the battery cells from external impacts, heat, vibration, etc. A battery pack generally includes a battery module, a battery management system, and a housing to house the battery module and the battery management system. The battery management system monitors and manages the charging and discharging process of the battery module.

[0095] When electrical devices are operating, their temperature rises. Therefore, battery devices in related technologies typically include a battery cooling system adjacent to the individual battery cells to cool them down. However, due to the large number of battery cells in a battery device, the number of cooling plates required to cool each cell in the battery cooling system is also large, and pipes are needed to connect the various cooling plates. Furthermore, an insulating structure is required between the cooling plates and the battery cells. This makes the battery cooling system in related technologies quite complex, resulting in a large space requirement and affecting the battery's energy density.

[0096] Therefore, based on the above considerations, in order to solve the problem that the battery cooling system in related battery devices has a relatively complex structure, resulting in a large space occupation and affecting the energy density of the battery, this application proposes a novel battery device. This novel battery device innovatively sets cooling channels on the casing of the battery cell, allowing the casing of the battery cell to have its own liquid cooling structure. This simplifies the structure of the battery cooling system, reduces its space occupation, and thus improves the space utilization rate of the battery cell, thereby increasing the energy density of the battery.

[0097] Furthermore, it should be noted that the battery device proposed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among these, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., while spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0098] The structure of the battery device proposed in this application will be explained and illustrated below with examples:

[0099] Please refer to the reference. Figures 1 to 4 In one embodiment of this application, the battery device 100 proposed in this application includes a housing 11 and an electrode assembly 13. The housing 11 is provided with a mounting cavity 11a, a mounting port 11b, a cooling channel 11c, a channel inlet 11d, and a channel outlet 11e. The mounting port 11b is connected to the mounting cavity 11a, the cooling channel 11c is isolated from the mounting cavity 11a, and the channel inlet 11d and the channel outlet 11e are both connected to the cooling channel 11c. The electrode assembly 13 is disposed in the mounting cavity 11a.

[0100] The housing 11 can accommodate the electrode assembly 13 and the electrolyte by forming a mounting cavity 11a on its inner side. A mounting port 11b communicating with the mounting cavity 11a can be located at one end of the housing 11. When the mounting port 11b is positioned upwards, its projection on the horizontal projection plane can coincide with the projection of the mounting cavity 11a, allowing the electrode assembly 13 to be mounted into the mounting cavity 11a through the mounting port 11b. Furthermore, the housing 11 can have a square shape on the horizontal projection plane. This square shape includes squares and rectangles, and also includes cases where the corners are not chamfered or are chamfered. Of course, the housing 11 can also be circular or other shapes; this application does not limit the shape of the housing 11. In addition, to achieve a sealed installation of the electrode assembly 13 and electrolyte within the mounting cavity 11a of the housing 11, the electrical device 100 may further include a top cover 15, which can cover the mounting port 11b and may be equipped with a pressure relief explosion-proof valve, an electrolyte injection hole, and an electrode inlet for electrical connection with the electrode assembly 13. Furthermore, a cooling channel 11c can be used for the flow of coolant to exchange heat with the battery cell 10 and remove the heat generated by the battery cell 10 during operation. The cooling channel 11c is isolated from the mounting cavity 11a, meaning they are not connected. Further, the cooling channel 11c may be located on the side wall of the housing 11, corresponding to the side panel 113 described below. Alternatively, the cooling channel 11c may be located on the bottom wall of the housing 11, corresponding to the bottom plate 111 described below. Alternatively, part of the cooling channel 11c may be located on the side panel 113, and another part may be located on the bottom plate 111. Furthermore, the cooling channel 11c may extend linearly, or it may extend along an arc, or it may extend partially linearly and partially along an arc. Moreover, the cooling channel 11c may consist only of the main channel 11c1, at least two branch channels 11c2, and a confluence channel 11c3 as described below, or it may consist only of the main channel 11c1. Therefore, this application does not limit the shape, structure, or location of the cooling channel 11c. Additionally, the channel inlet 11d and the channel outlet 11e can be used for the entry and exit of coolant, respectively. The shapes of the channel inlet 11d and the channel outlet 11e can be circular or square; this application does not limit the shapes of the channel inlet 11d and the channel outlet 11e. The positions of the channel inlet 11d and the channel outlet 11e can be set according to the position of the cooling channel 11c. For example, when the cooling channel 11c is set on the side panel 113 of the housing 11, the channel inlet 11d and the channel outlet 11e can be set on the side panel 113 of the housing 11.

[0101] The electrode assembly 13 may include a positive electrode, a negative electrode, and a separator disposed between the two. The electrode assembly 13 may be wound into a square structure or a cylindrical structure, or may be formed into a square structure by stacking.

[0102] The technical solution of this application, by directly setting cooling channels 11c on the casing 11, allows the casing 11 of the battery cell 10 to have its own liquid cooling structure. Therefore, the casing 11 of the battery cell 10 can be considered as "part" of the battery cooling system, thereby simplifying the structure of the battery cooling system, reducing its space occupation, and improving the space utilization of the battery cell 10, thus increasing the energy density of the battery device 100. Simultaneously, the built-in liquid cooling structure of the casing 11 also achieves direct cooling of the battery cell 10. Compared to the traditional indirect cooling method involving adjacent battery cells 10, direct cooling has higher heat exchange efficiency, thus improving the cooling effect of the battery device 100.

[0103] Please refer to the reference. Figures 2 to 4 In one embodiment of this application, the housing 11 includes a bottom plate 111 and a side plate 113; the side plate 113 is connected to the bottom plate 111 and is arranged around the periphery of the bottom plate 111. The side plate 113 and the bottom plate 111 are configured to form a mounting cavity 11a. The side of the side plate 113 away from the bottom plate 111 is configured to form a mounting opening 11b. The side plate 113 is provided with a cooling channel 11c, a channel inlet 11d and a channel outlet 11e.

[0104] The side panel 113 can be an annular structure with openings at both ends. When the mounting opening 11b is facing upwards as described above, the upper opening of the side panel 113 can form the mounting opening 11b, while the lower opening is fitted onto the outside of the base plate 111. In this case, the channel inlet 11d and the channel outlet 11e can be located on the side of the side panel 113 away from the mounting opening 11b, as described below, or they can be located on the side surface of the side panel 113.

[0105] In this embodiment, the cooling channel 11c, the channel inlet 11d, and the channel outlet 11e are arranged on the side panel 113. On the one hand, the side panel 113 has a relatively large area, which makes it convenient to arrange the cooling channel 11c, the channel inlet 11d, and the channel outlet 11e. On the other hand, the coverage area of ​​the cooling channel 11c can be increased, thereby increasing the heat exchange area and further improving the cooling effect on the battery device 100.

[0106] In one embodiment of this application, the side panel 113 is an integral structure.

[0107] A monolithic structure is a structure that is manufactured as a single unit through integral molding. Examples include monolithic casting and monolithic injection molding.

[0108] In this embodiment, the side panel 113 is configured as a single piece, which improves the sealing performance of the cooling channel 11c provided on the side panel 113. Simultaneously, it also enhances the strength of the side panel 113, thereby improving the protection of the electrode assembly 13 located within the mounting cavity 11a of the housing 11. Alternatively, in some embodiments, the base plate 111 and the side panel 113 may also be a single piece.

[0109] Please refer to the reference. Figure 3 and Figure 4 In one embodiment of this application, the side panel 113 includes two first side panels 1131 and two second side panels 1133. The two first side panels 1131 are arranged relatively spaced apart in a first direction; the two second side panels 1133 are arranged relatively spaced apart in a second direction intersecting the first direction. The area of ​​the second side panel 1133 is smaller than the area of ​​the first side panel 1131. At least one first side panel 1131 is provided with a cooling channel 11c, a channel inlet 11d, and a channel outlet 11e.

[0110] The first side plate 1131 can be the large surface of the battery cell 10, and the second side plate 1133 can also be the large surface of the battery cell 10. Therefore, in other words, the first direction can be the width direction of the battery cell 10, and the second direction can be the length direction of the battery cell 10. Therefore, the channel inlet 11d and channel outlet 11e can be arranged in the second direction. Alternatively, the cooling channel 11c, channel inlet 11d, and channel outlet 11e can be provided on only one first side plate 1131, or the cooling channel 11c, channel inlet 11d, and channel outlet 11e can be provided on both first side plates 1131.

[0111] In this embodiment, the cooling channel 11c, the channel inlet 11d, and the channel outlet 11e are arranged on the side where the large surface of the battery cell 10 is located. This allows the cooling channel 11c to cover as much area as possible while simplifying its structural arrangement, thereby increasing the heat exchange area and improving the heat dissipation effect on the battery device 100.

[0112] Please refer to Figure 4 In one embodiment of this application, the channel inlet 11d and the channel outlet 11e are both located on the side of the side panel 113 away from the mounting port 11b.

[0113] When the mounting port 11b is set upwards as described above, the channel inlet 11d and the channel outlet 11e are located on the lower surface of the side panel 113.

[0114] In this embodiment, the channel inlet 11d and channel outlet 11e are located on the lower surface of the side panel 113. This ensures that the battery cells 10 do not obstruct the channel inlet 11d and channel outlet 11e when they are stacked, thus facilitating the stacking of the battery cells 10. Simultaneously, the coolant is injected from the bottom of the battery cells 10, fully filling the cooling channel 11c and improving the heat dissipation effect on the battery assembly 100.

[0115] Please refer to the reference. Figure 4 or Figure 24 In one embodiment of this application, the base plate 111 and the mounting port 11b are arranged at intervals in the third direction, and at least a portion of the cooling channel 11c is arranged in a reciprocating tortuous manner in the third direction.

[0116] When the mounting port 11b is set upwards as described above, the third direction is the vertical direction. Therefore, the cooling channel 11c can extend upwards and then bend downwards, then bend upwards again, repeating this cycle to form an S-shaped pattern. This can be done on a portion of the cooling channel 11c, or entirely in a third-direction upward reciprocating pattern.

[0117] In this embodiment, at least a portion of the cooling channel 11c is configured as an S-shape, which can extend the extension length of the cooling channel 11c to further increase the coverage area of ​​the cooling channel 11c and thus increase the heat exchange area, thereby improving the heat dissipation effect on the battery device 100.

[0118] Please refer to Figure 24 In one embodiment of this application, the cooling channel 11c includes a main channel 11c1, branch channels 11c2 and a confluence channel 11c3. The main channel 11c1 is connected to the channel inlet 11d. One end of at least two branch channels 11c2 is connected to the main channel 11c1. One end of the confluence channel 11c3 is connected to the end of at least two branch channels 11c2 away from the main channel 11c1, and the other end is connected to the channel outlet 11e.

[0119] The main flow channel 11c1 can be used to connect the channel inlet 11d and at least two branch channels. The branch flow channel 11c2 can be used to divert the coolant flowing into the main flow channel 11c1, so that the coolant flows through more areas of the battery cell 10. The confluence channel 11c3 can be used to connect at least two branch flow channels 11c2 and the channel outlet 11e. Wherein, when the cooling channel 11c is at least partially arranged in a reciprocating tortuous manner upwards in a third direction as described above, at least one branch flow channel 11c2 can be arranged in a reciprocating tortuous manner upwards in a third direction.

[0120] In this embodiment, the cooling channel 11c is configured to include a main channel 11c1, a branch channel 11c2, and a confluence channel 11c3. This can increase the flow area of ​​the cooling channel 11c and increase the liquid flow efficiency of the cooling channel 11c, thereby further improving the cooling effect on the battery device 100 under this dual effect.

[0121] Please refer to the reference. Figures 5 to 11 In one embodiment of this application, the battery device 100 further includes a liquid cooling bracket 30, which is provided with a liquid passage 30a, a liquid inlet 30b, a liquid outlet 30c, a first liquid outlet 30d, and a second liquid outlet 30e. The liquid inlet 30b, the liquid outlet 30c, the first liquid outlet 30d, and the second liquid outlet 30e are all connected to the liquid passage 30a. The channel inlet 11d is connected to the first liquid outlet 30d, and the channel outlet 11e is connected to the second liquid outlet 30e.

[0122] The liquid cooling bracket 30 can be used to connect the cooling channel 11c on at least one battery cell 10 with the heat sink in the battery cooling system, forming a cooling flow path circulation. The liquid cooling bracket 30 can be a single integral structure, in which case it can be a plate structure. Alternatively, the liquid cooling bracket 30 can be a split structure, for example, including a first frame 31 and a second frame 33 as described below. In this case, the first frame 31 and the second frame 33 can be plate structures or column structures, etc. Therefore, this application does not limit the shape of the liquid cooling bracket 30. Furthermore, the liquid cooling bracket 30 can be stacked on the side of the battery cell 10 where the channel inlet 11d and the channel outlet 11e are provided.

[0123] In this embodiment, by setting up a liquid cooling bracket 30 to connect the battery cell 10 and the heat dissipation gas in the battery cooling system, the coolant can enter the radiator in the battery cooling system for heat dissipation and cooling after heat exchange with the battery cell 10, and then facilitate its subsequent re-entry into the battery cell 10 for cooling, thus realizing the circulation of the coolant flow path.

[0124] Please refer to the reference. Figures 6 to 8 In one embodiment of this application, there are multiple battery cells 10, and the liquid cooling bracket 30 is provided with multiple first liquid inlets 30d and multiple second liquid inlets 30e; the channel inlet 11d of each battery cell 10 is connected to a first liquid inlet 30d, and the channel outlet 11e of each battery cell 10 is connected to a second liquid inlet 30e.

[0125] In this embodiment, setting the number of battery cells 10 to multiple can improve the power supply effect of the battery device 100. The arrangement of multiple first liquid inlets 30d and multiple second liquid inlets 30e allows for the pairing and use of multiple battery cells 10 with fewer liquid cooling brackets 30, thus simplifying the number of liquid cooling brackets 30 required.

[0126] Please refer to Figure 8 In one embodiment of this application, the liquid cooling support 30 can be an integral structure.

[0127] In this embodiment, the liquid cooling bracket 30 is configured as an integral structure, so that multiple battery cells 10 are arranged in a first direction to form a battery module 20, such as... Figure 5 As shown, only one liquid-cooled bracket 30 is needed. Furthermore, when at least two battery modules 20 are further arranged in the second direction, as... Figure 12 As shown, one liquid cooling bracket 30 can be used for at least two battery modules 20. Alternatively, at least two liquid cooling brackets 30 can be used, each corresponding to one battery module 20, to reduce the size of the liquid cooling bracket 30 and improve its manufacturing convenience. It is evident that making the liquid cooling bracket 30 a single unit simplifies the number of liquid cooling brackets 30 required. Simultaneously, it allows the liquid cooling bracket 30 to have higher strength, thus improving the stability of the liquid cooling bracket 30 in supporting the battery module 10 when the channel inlet 11d and channel outlet 11e of the battery cell 10 are positioned on the lower surface of the battery cell 10 as described above.

[0128] Please refer to the reference. Figures 15 to 17 In one embodiment of this application, the liquid passage 30a includes an inlet channel 30a1 and an outlet channel 30a2. The inlet port 30b and the first outlet port 30d are both connected to the inlet channel 30a1. The outlet channel 30a2 is isolated from the inlet channel 30a1. The outlet port 30c and the second outlet port 30e are both connected to the outlet channel 30a2.

[0129] The liquid inlet channel 30a1 can be used to connect the cooling channel 11c on at least one battery cell 10 to one end of the radiator in the battery cooling system. When there are multiple first liquid inlets 30d, the liquid inlet channel 30a1 can extend along the arrangement direction of the multiple first liquid inlets 30d. The liquid outlet channel 30a2 can be used on the other end of the liquid cell 10 connected to the radiator in the battery cooling system. The liquid outlet channel 30a2 is isolated from the liquid inlet channel 30a1, meaning they are not connected. In this case, when the liquid cooling bracket 30 is a single integrated structure as described above, the liquid inlet channel 30a1 and the liquid outlet channel 30a2 can be located in different areas of the liquid cooling bracket 30. However, when the liquid cooling bracket 30 is a split structure consisting of a first frame 31 and a second frame 33 as described below, the liquid inlet channel 30a1 and the liquid outlet channel 30a2 can be respectively located on the first frame 31 and the second frame 33. In addition, when the number of second liquid outlets 30e is set to multiple, the liquid outlet channel 30a2 can be extended along the arrangement direction of the multiple second liquid outlets 30e.

[0130] In this embodiment, the liquid passage 30a is divided into a liquid inlet channel 30a1 and a liquid outlet channel 30a2 that are isolated from each other, so that they can be adapted to the channel inlet 11d and channel outlet 11e on the battery cell 10 respectively. This reduces the size of the liquid passage 30a and the amount of coolant used, thereby reducing the cost of use.

[0131] In one embodiment of this application, please refer to the reference. Figures 13 to 17 When the liquid cooling support 30 is a split structure, the liquid cooling support 30 includes a first frame 31 and a second frame 33. The first frame 31 is provided with a liquid inlet channel 30a1, a liquid inlet 30b and a first liquid outlet 30d; the second frame 33 is provided with a liquid outlet channel 30a2, a liquid outlet 30c and a second liquid outlet 30e.

[0132] The first frame 31 can be used to set up an inlet channel 30a1, an inlet 30b, and a first outlet 30d. The first frame 31 can be a plate structure or a column structure, and can be set on the side of the battery cell 10 where the channel inlet 11d is located, so that the first outlet 30d on the first frame 31 communicates with the channel inlet 11d. The second frame 33 can be used to set up an outlet channel 30a2, an outlet 30c, and a second outlet 30e. The second frame 33 can be a plate structure or a column structure, and can be set on the side of the battery cell 10 where the channel outlet 11e is located, so that the second outlet 30e on the second frame 33 communicates with the channel outlet 11e. When the channel inlet 11d and channel outlet 11e on the battery cell 10 are located on the same side, for example, as described above, on the lower surface of the battery cell 10, the first frame 31 and the second frame 33 can be set side-by-side on the lower side of the battery cell 10.

[0133] In this embodiment, the liquid cooling bracket 30 is divided into a first frame 31 and a second frame 33, so that they can be adapted to the liquid inlet channel 30a1 and the liquid outlet channel 30a2 respectively, thereby reducing the volume of the liquid cooling bracket 30 and reducing the space occupied.

[0134] Please refer to the reference. Figures 13 to 17 In one embodiment of this application, there are multiple battery cells 10, which are arranged along a first direction; a first frame 31 extends along the first direction and is provided with multiple first liquid inlets 30d, and the channel inlet 11d of each battery cell 10 is connected to a first liquid inlet 30d; a second frame 33 extends along the first direction and is provided with multiple second liquid inlets 30e, and the channel outlet 11e of each battery cell 10 is connected to a second liquid inlet 30e.

[0135] In this embodiment, setting the number of battery cells 10 to multiple can improve the power supply effect of the battery device 100. At this time, both the first frame 31 and the second frame 33 are extended along the first direction, which facilitates the supply of coolant to multiple battery cells 10 through the first frame 31 and the reception of the cooled coolant after heat exchange by the second frame 33. This helps to simplify the setting of the coolant flow path, reduce its space occupation, and further improve the space utilization rate of the battery cells 10.

[0136] Please refer to Figure 18In one embodiment of this application, a plurality of battery cells 10 arranged along a first direction are configured into a battery module 20. The battery device 100 includes at least two battery modules 20, which are arranged along a second direction intersecting the first direction. The number of liquid cooling brackets 30 is at least two, and each liquid cooling bracket 30 corresponds to one battery module 20.

[0137] In this embodiment, the arrangement of at least two battery modules 20 can further improve the power supply effect of the battery device 100. Furthermore, using a liquid-cooled bracket 30 paired with a battery module 20 can reduce the size of the liquid-cooled bracket 30 and improve its manufacturing convenience.

[0138] Please refer to Figure 6 In one embodiment of this application, the liquid cooling bracket 30 is provided with a first positioning groove 30f, and the first liquid outlet 30d and the second liquid outlet 30e are both connected to the first positioning groove 30f. The battery cell 10 is disposed in the first positioning groove 30f.

[0139] The first positioning groove 30f can be disposed on the side of the liquid cooling bracket 30 facing the battery cell 10, and the first liquid inlet 30d and the second liquid inlet 30e can penetrate the groove wall corresponding to their openings in the first positioning groove 30f. Wherein, when the liquid cooling bracket 30 is an integral structure as described above, the first positioning groove 30f can accommodate the entire lower end of the battery cell 10 and is adapted to the shape of the lower end of the battery cell 10. Where the liquid cooling bracket 30 is a split structure as described above, comprising a first frame 31 and a second frame 33, the first positioning groove 30f can be partially disposed on the first frame 31 and partially disposed on the second frame 33.

[0140] In this embodiment, the first positioning groove 30f can be used to position the battery cell 10, thereby improving the accuracy of the battery cell 10 being installed on the liquid cooling bracket 30.

[0141] Please refer to the reference. Figures 6 to 10 In one embodiment of this application, the liquid cooling bracket 30 is provided with a first liquid passage pipe 35, which is connected to a first liquid passage port 30d and is at least partially inserted into the channel inlet 11d.

[0142] In this embodiment, the sealing performance of the connection between the first liquid-passing pipe 35 and the channel inlet 11d can be improved by the insertion and engagement of the first liquid-passing pipe 35 and the battery cell 10. The first liquid-passing pipe 35 and the liquid-cooling bracket 30 can be an integral structure to improve the sealing performance and connection strength at their joint. Furthermore, when the liquid-cooling bracket 30 includes a first frame 31 and a second frame 33 as described above, the first liquid-passing pipe 35 can be disposed on the first frame 31. Additionally, when the liquid-cooling bracket 30 is provided with a first positioning groove 30f as described above, the first liquid-passing pipe 35 can protrude from the groove wall corresponding to the opening of the first positioning groove 30f.

[0143] Please refer to the reference. Figures 6 to 9 ,as well as Figure 11 In one embodiment of this application, the liquid cooling bracket 30 is provided with a second liquid passage pipe 36, which is connected to a second liquid passage port 30e and is at least partially inserted into the channel outlet 11e.

[0144] In this embodiment, the sealing performance of the connection between the second liquid-passing pipe 36 and the channel outlet 11e can be improved by the insertion and engagement of the second liquid-passing pipe 36 and the battery cell 10. The second liquid-passing pipe 36 and the liquid-cooling bracket 30 can be an integral structure to improve the sealing performance and connection strength at their joint. Furthermore, when the liquid-cooling bracket 30 includes a first frame 31 and a second frame 33 as described above, the second liquid-passing pipe 36 can be disposed on the second frame 33. Additionally, when the liquid-cooling bracket 30 has a first positioning groove 30f as described above, the second liquid-passing pipe 36 can protrude from the groove wall corresponding to the opening of the first positioning groove 30f.

[0145] Please refer to Figure 5 In one embodiment of this application, the battery cell 10 is stacked on one side of the liquid cooling bracket 30, and the liquid inlet 30b and the liquid outlet 30c are located on the side of the liquid cooling bracket 30 facing the battery cell 10; the battery cell 10 is provided with a first extension tube 37 and a second extension tube 38, the first extension tube 37 is connected to the liquid inlet 30b and extends along the direction of the liquid cooling bracket 30 facing the battery cell 10, and the second extension tube 38 is connected to the liquid outlet 30c and extends along the direction of the liquid cooling bracket 30 facing the battery cell 10.

[0146] When the channel inlet 11d and channel outlet 11e on the battery cell 10 are arranged on the lower surface of the battery cell 10 as described above, the battery cell 10 can be stacked on the upper side of the liquid cooling bracket 30. The first extension tube 37 and the second extension tube 38 can be arranged to extend in the vertical direction, that is, to extend in the third direction described above.

[0147] In this embodiment, the battery cell 10 is stacked on one side of the liquid cooling bracket 30, enabling the battery cell 10 to be directly installed on the liquid cooling bracket 30, thereby improving the convenience of connecting and assembling the two. The arrangement of the first extension tube 37 and the second extension tube 38 extending in the vertical direction facilitates the connection of the outlet flow position upwards, so as to connect with the pipeline connected to the heat sink on the battery cooling system, thereby improving the convenience of assembling the battery device 100.

[0148] Please refer to Figure 19 Since both single and multiple battery cells 10 typically need to be installed within a housing 40 to form the battery assembly 100, in one embodiment of this application, besides providing and receiving coolant to the battery cells 10 using a liquid cooling support 30 as described above to achieve cooling flow circulation, the housing 40 of the battery assembly 100 can also be used directly. In this case, please refer to the reference... Figures 19 to 23 The battery cell 10 is located inside the housing 40. The housing 40 is provided with a liquid channel 40a, a liquid inlet 40b, a liquid outlet 40c, a first connecting port 40d, and a second connecting port 40e. The liquid inlet 40b, the liquid outlet 40c, the first connecting port 40d, and the second connecting port 40e are all connected to the liquid channel 40a. The channel inlet 11d is connected to the first connecting port 40d, and the channel outlet 11e is connected to the second connecting port 40e.

[0149] In this embodiment, by directly utilizing the battery device 100 to set up the liquid channel 40a to connect the battery cell 10 and the heat sink in the battery cooling system, the number of components in the battery device 100 can be simplified, thereby improving the convenience of battery device 100 assembly and the space utilization efficiency of the battery cell 10. The liquid channel 40a can be a single, integrated channel. Alternatively, the liquid channel 40a can be configured as a separate channel, for example, the liquid channel 40a includes a first channel and a second channel that are isolated from each other. In this case, the liquid inlet 40b and the first connecting port 40d can be connected to the first channel, while the liquid outlet 40c and the second connecting port 40e can be connected to the second channel.

[0150] Please refer to Figure 20 In one embodiment of this application, the housing 40 is provided with a second positioning groove 40f, the first connecting port 40d and the second connecting port 40e are both connected to the second positioning groove 40f, and the battery cell 10 is disposed in the second positioning groove 40f.

[0151] In this embodiment, the second positioning groove 40f can be used to position the battery cell 10, thereby improving the accuracy of the battery cell 10 installation in the housing 40.

[0152] In one embodiment of this application, there are multiple battery cells 10, and the housing 40 is provided with multiple first communication ports 40d and second communication ports 40e. The channel inlet 11d of each battery cell 10 is connected to a first communication port 40d, and the channel outlet 11e of each battery cell 10 is connected to a second communication port 40e.

[0153] In this embodiment, by providing multiple battery cells 10, the power supply efficiency of the battery device 100 can be improved. Simultaneously, by providing multiple first connecting ports 40d and second connecting ports 40e on the housing 40, one housing 40 can be used for multiple battery cells 10, thereby reducing the number of housings 40 required. The multiple battery cells 10 can be arranged along a first direction to form a battery module 20. Alternatively, at least two battery modules 20 can be further provided in a second direction. In this case, when the liquid channel 40a is configured as described above, including a first channel and a second channel that are isolated from each other, adjacent first and second channels can be correspondingly configured with one battery module 20.

[0154] Please refer to Figures 20 to 22 In one embodiment of this application, the housing 40 is provided with a first connecting pipe 41, which connects to a first connecting port 40d and is at least partially inserted into the channel inlet 11d.

[0155] In this embodiment, the sealing performance of the connection between the housing 40 and the battery cell 10 can be improved by inserting the first connecting pipe 41 and the channel inlet 11d. The first connecting pipe 41 and the housing 40 can be an integral structure to improve the sealing performance and connection strength at their joint.

[0156] Please refer to Figure 20 , Figure 21 And to Figure 23 In one embodiment of this application, the housing 40 is provided with a second connecting pipe 43, which is connected to the second connecting port 40e and is at least partially inserted into the channel outlet 11e.

[0157] In this embodiment, the sealing performance of the connection between the housing 40 and the battery cell 10 can be improved by inserting the second connecting pipe 43 and the channel inlet 11d. The second connecting pipe 43 and the housing 40 can be an integral structure to improve the sealing performance and connection strength at their joint.

[0158] Please refer to the reference. Figures 1 to 11In one embodiment of this application, the battery device 100 includes a battery cell 10, which includes a housing 11 and an electrode assembly 13. The housing 11 has a mounting cavity 11a, a mounting port 11b, a cooling channel 11c, a channel inlet 11d, and a channel outlet 11e. The mounting port 11b is connected to the mounting cavity 11a, the cooling channel 11c is isolated from the mounting cavity 11a, and the channel inlet 11d and the channel outlet 11e are both connected to the cooling channel 11c. The electrode assembly 13 is disposed in the mounting cavity 11a. The housing 11 includes a bottom plate 111 and a side plate 113. The side plate 113 is connected to the bottom plate 111 and surrounds the periphery of the bottom plate 111. The side plate 113 and the bottom plate 111 enclose the mounting cavity 11a. The side of the side plate 113 away from the bottom plate 111 encloses the mounting port 11b. The side plate 113 has a cooling channel 11c, a channel inlet 11d, and a channel outlet 11e. The side panel 113 is an integral structure. The side panel 113 includes two first side panels 1131 and two second side panels 1133. The two first side panels 1131 are spaced apart relative to each other in a first direction; the two second side panels 1133 are spaced apart relative to each other in a second direction intersecting the first direction. The area of ​​the second side panels 1133 is smaller than the area of ​​the first side panels 1131. At least one first side panel 1131 is provided with a cooling channel 11c, a channel inlet 11d, and a channel outlet 11e. The channel inlet 11d and the channel outlet 11e are both located on the side of the side panel 113 away from the mounting opening 11b. The bottom plate 111 and the mounting opening 11b are arranged spaced apart in a third direction, and at least a portion of the cooling channel 11c is arranged in a reciprocating tortuous manner in a third direction. The battery device 100 also includes a liquid-cooling support 30, which has a liquid-passing channel 30a, a liquid inlet 30b, a liquid outlet 30c, a first liquid outlet 30d, and a second liquid outlet 30e. The liquid inlet 30b, liquid outlet 30c, first liquid outlet 30d, and second liquid outlet 30e are all connected to the liquid-passing channel 30a. The channel inlet 11d is connected to the first liquid outlet 30d, and the channel outlet 11e is connected to the second liquid outlet 30e. The liquid-cooling support 30 is an integral structure. There are multiple battery cells 10. The liquid-cooling support 30 has multiple first liquid outlets 30d and multiple second liquid outlets 30e. The channel inlet 11d of each battery cell 10 is connected to one first liquid outlet 30d, and the channel outlet 11e of each battery cell 10 is connected to one second liquid outlet 30e. Multiple battery cells 10 are arranged along a first direction to form a battery module 20. The battery device 100 includes at least two battery modules 20, which are arranged along a second direction intersecting the first direction. The number of liquid cooling brackets 30 is at least two, and each liquid cooling bracket 30 corresponds to one battery module 20.The liquid cooling bracket 30 is provided with a first positioning groove 30f, and a first liquid outlet 30d and a second liquid outlet 30e are both connected to the first positioning groove 30f. The battery cell 10 is disposed in the first positioning groove 30f. The liquid cooling bracket 30 is provided with a first liquid outlet 35, which is connected to the first liquid outlet 30d and is at least partially inserted into the channel inlet 11d. The liquid cooling bracket 30 is provided with a second liquid outlet 36, which is connected to the second liquid outlet 30e and is at least partially inserted into the channel outlet. Inside port 11e; on one side of the liquid cooling support 30 stacked on the battery cell 10, the liquid inlet 30b and the liquid outlet 30c are located on the side of the liquid cooling support 30 facing the battery cell 10; the battery cell 10 is provided with a first extension tube 37 and a second extension tube 38, the first extension tube 37 is connected to the liquid inlet 30b and extends along the direction of the liquid cooling support 30 facing the battery cell 10, and the second extension tube 38 is connected to the liquid outlet 30c and extends along the direction of the liquid cooling support 30 facing the battery cell 10.

[0159] This application also proposes an electrical device including a battery device 100. The specific structure of the battery device 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0160] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery device, characterized in that, Includes a battery cell, the battery cell comprising: The housing includes a mounting cavity and a mounting port, the mounting port communicating with the mounting cavity; the housing also includes a cooling channel and a channel inlet and a channel outlet communicating with the cooling channel, the cooling channel being isolated from the mounting cavity; and An electrode assembly disposed within the mounting cavity; The battery device further includes a liquid cooling bracket, which is provided with a liquid passage, a liquid inlet, a liquid outlet, a first liquid outlet, and a second liquid outlet; the liquid inlet, the liquid outlet, the first liquid outlet, and the second liquid outlet are all connected to the liquid passage, the channel inlet is connected to the first liquid outlet, and the channel outlet is connected to the second liquid outlet; Alternatively, the battery device may further include a housing, with the individual battery cells disposed within the housing. The housing is provided with a liquid channel, a liquid inlet, a liquid outlet, a first connecting port, and a second connecting port. The liquid inlet, the liquid outlet, the first connecting port, and the second connecting port are all connected to the liquid channel. The channel inlet is connected to the first connecting port, and the channel outlet is connected to the second connecting port.

2. The battery device as claimed in claim 1, characterized in that, The housing includes: Base plate; and A side panel is connected to the base plate and together with the base plate, it is configured to form the mounting cavity. The side of the side panel away from the base plate is configured to form the mounting opening. The side panel is provided with the cooling channel, the channel inlet, and the channel outlet.

3. The battery device as claimed in claim 2, characterized in that, The side panels are a single, integral structure.

4. The battery device as claimed in claim 2, characterized in that, The side panel includes: Two first side plates, the two first side plates being arranged at a relative interval in a first direction; and Two second side plates are arranged at a distance from each other in a second direction intersecting the first direction. The area of ​​the second side plate is smaller than that of the first side plate. At least one of the first side plates is provided with the cooling channel, the channel inlet, and the channel outlet.

5. The battery device as claimed in claim 2, characterized in that, Both the channel inlet and the channel outlet are located on the side of the side panel away from the mounting opening.

6. The battery device as claimed in claim 5, characterized in that, The base plate and the mounting port are arranged at intervals in the third direction, and at least a portion of the cooling channel is arranged to meander back and forth in the third direction.

7. The battery device as claimed in claim 1, characterized in that, The cooling channel includes: Main channel, which is connected to the channel inlet; Diversion channels, wherein at least two of the diversion channels are connected at one end to the main channel; and A confluence channel, one end of which is connected to the ends of at least two branch channels away from the main channel, and the other end of which is connected to the channel outlet.

8. The battery device according to any one of claims 1 to 7, characterized in that, The liquid cooling support is an integral structure.

9. The battery device according to any one of claims 1 to 7, characterized in that, The liquid passage includes: The liquid inlet channel, wherein the liquid inlet and the first liquid outlet are both connected to the liquid inlet channel; and The liquid outlet channel is isolated from the liquid inlet channel, and the liquid outlet and the second liquid outlet are both connected to the liquid outlet channel.

10. The battery device as claimed in claim 9, characterized in that, The liquid-cooled support includes: A first frame, the first frame being provided with the liquid inlet channel, the liquid inlet, and the first liquid outlet; and The second frame is provided with the liquid outlet channel, the liquid outlet and the second liquid passage.

11. The battery device according to any one of claims 1 to 7, characterized in that, The number of battery cells is multiple, and the liquid cooling bracket is provided with multiple first liquid inlets and multiple second liquid inlets; The channel inlet of each of the battery cells is connected to a first liquid outlet, and the channel outlet of each of the battery cells is connected to a second liquid outlet.

12. The battery device as claimed in claim 11, characterized in that, Multiple battery cells are arranged along a first direction to form a battery module. The battery device includes at least two battery modules, and the at least two battery modules are arranged along a second direction intersecting the first direction. The number of liquid cooling brackets is at least two, and each liquid cooling bracket corresponds to one battery module.

13. The battery device according to any one of claims 1 to 7, characterized in that, The liquid cooling bracket is provided with a first positioning groove, and the first liquid inlet and the second liquid inlet are both connected to the first positioning groove. The battery cell is disposed in the first positioning groove. And / or, the liquid cooling bracket is provided with a first liquid passage pipe, the first liquid passage pipe is connected to the first liquid passage port, and is at least partially inserted into the channel inlet; And / or, the liquid cooling bracket is provided with a second liquid passage pipe, the second liquid passage pipe is connected to the second liquid passage port, and is at least partially inserted into the channel outlet; And / or, the battery cell is stacked on one side of the liquid cooling bracket, and the liquid inlet and the liquid outlet are located on the side of the liquid cooling bracket facing the battery cell; the battery cell is provided with a first extension tube and a second extension tube, the first extension tube is connected to the liquid inlet and extends along the direction of the liquid cooling bracket facing the battery cell, and the second extension tube is connected to the liquid outlet and extends along the direction of the liquid cooling bracket facing the battery cell.

14. The battery device according to any one of claims 1 to 7, characterized in that, The housing is provided with a second positioning groove, and both the first connecting port and the second connecting port are connected to the second positioning groove. The battery cell is disposed in the second positioning groove. And / or, the number of battery cells is multiple, the housing is provided with multiple first communication ports and second communication ports, the channel inlet of each battery cell is connected to a first communication port, and the channel outlet of each battery cell is connected to a second communication port; And / or, the housing is provided with a first connecting pipe, the first connecting pipe being connected to the first connecting port and at least partially inserted into the channel inlet; And / or, the housing is provided with a second connecting pipe, which is connected to the second connecting port and is at least partially inserted into the channel outlet.

15. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 14.

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