Battery device and electric device

Abstract

The invention provides a battery device and a power utilization device. The battery device comprises a box body, a battery monomer assembly and a confluence component, a channel is formed in the box body and extends in the first direction, a first opening is formed in one end, in the first direction, of the box body, and the first opening communicates with the channel and the external environment of the battery device. The battery cell assembly includes at least one battery cell, the battery cell assembly is accommodated in the channel, the battery cell assembly is configured to be movable in the first direction to enter or leave the channel through the first opening, and the battery cell includes an electrode terminal. The confluence component is arranged in the box body and connected to the box body, the confluence component comprises a conductive part, the conductive part is exposed to the channel, and the electrode terminal is detachably connected with the conductive part. According to the invention, the maintainability of the battery device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and power tools.

[0003] In the development of battery technology, how to improve the maintainability of battery devices is a continuous research direction in battery technology. Summary of the Invention

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can effectively improve the maintainability of the battery device.

[0005] In a first aspect, an embodiment of the present application provides a battery device, comprising a housing, a battery cell assembly, and a busbar. The housing has a channel extending along a first direction. The housing has a first opening at one end along the first direction, the first opening connecting the channel with the external environment of the battery device. The battery cell assembly comprises at least one battery cell, which is housed within the channel. The battery cell assembly is configured to be movable along the first direction to enter or exit the channel through the first opening. The battery cell comprises an electrode terminal. The busbar is disposed within the housing and connected to the housing. The busbar includes a conductive portion exposed to the channel, and the electrode terminal is detachably connected to the conductive portion.

[0006] The battery cell assembly includes a first state and a second state. In the first state, the electrode terminal is electrically connected to the conductive part. In the second state, the electrode terminal is separated from the conductive part. The battery cell assembly can switch between the first state and the second state by moving along the channel.

[0007] With the above technical solution, when a battery cell needs to be replaced, the battery cell can be directly slid into or out of the channel along the first direction through the first opening, without having to disassemble the entire battery device or perform complex disassembly operations, thereby significantly improving the modularity and maintainability of the battery device. In addition, the installation and removal of the battery cell by sliding along the channel effectively reduces the difficulty of operation.

[0008] In some embodiments of the first aspect, the busbar assembly further includes an insulating portion connected to the housing, the insulating portion having a groove formed on a side of the insulating portion facing the electrode terminal, the conductive portion being disposed within the groove, and at least a portion of the electrode terminal being inserted into the groove and contacting the conductive portion.

[0009] The above technical solution realizes the detachable connection between the electrode terminal and the busbar component by plugging, has a simple structure, is easy to assemble, and helps to improve the installation and removal efficiency of the battery cell.

[0010] In some embodiments of the first aspect, the current collecting component further includes a first clamping portion, the first clamping portion being disposed on the insulating portion and located within the groove, and the electrode terminal being provided with a second clamping portion corresponding to the first clamping portion, the first clamping portion being configured to engage with the second clamping portion.

[0011] The above technical solution can improve the reliability of the connection between the electrode terminal and the busbar component by introducing the snap-fitting cooperation between the first snap-fitting portion and the second snap-fitting portion.

[0012] In some embodiments of the first aspect, the battery device further includes a baffle, which is detachably connected to the box and closes the first opening.

[0013] The above technical solution introduces a baffle that can protect the battery cells, thereby reducing the risk of external impurities invading the channel and causing damage to the battery cells, thereby improving the reliability of the battery device.

[0014] In some embodiments of the first aspect, the battery device further includes a buffer member disposed between the baffle and the battery cell, and an elastic modulus of the buffer member is smaller than an elastic modulus of the baffle.

[0015] The buffer component of the above technical solution acts as a protective barrier, preferentially deforming and absorbing energy when the battery device is subjected to external impact or vibration. This effectively reduces the peak impact force transmitted to the battery cells, reducing the impact energy directly acting on the battery cells, thereby minimizing the risk of damage to the battery cells and further improving the reliability of the battery device. Furthermore, the introduction of the buffer component reduces friction between the baffle and the battery cells, reducing the risk of scratches on the phone cells during installation and removal.

[0016] In some embodiments of the first aspect, there are multiple channels and multiple battery cell assemblies, the multiple channels are spaced apart along the second direction, the first direction intersects the second direction, and at least one battery cell assembly is disposed in each channel.

[0017] The above technical solution enables the battery cell assembly in each channel to have an independent plugging and unplugging path, which will not interfere with the battery cell assemblies in other channels during installation and removal, thereby further improving the maintainability of the battery device.

[0018] In some embodiments of the first aspect, each battery cell assembly includes a plurality of battery cells. In each battery cell assembly, the plurality of battery cells are arranged along the second direction, and electrode terminals of the plurality of battery cells all face the busbar.

[0019] The above technical solution helps to reduce the number of channels to a certain extent, thereby simplifying the overall structural complexity of the box. Furthermore, the reduction in the number of channels helps to improve the utilization efficiency of the box's internal space, accommodating more battery cells within a limited volume and increasing the energy density of the battery device. At the same time, this arrangement still maintains good maintainability. In this way, the above technical solution can achieve a good balance between maintainability, structural complexity, and energy density of the battery device.

[0020] In some embodiments of the first aspect, in each battery cell assembly, any two adjacent battery cells are fixedly connected.

[0021] The above technical solution can effectively suppress the relative displacement caused by vibration or impact during transportation, installation or operation by fixedly connecting adjacent battery cells, thereby reducing the risk of contact sliding, friction or surface scratches between adjacent battery cells.

[0022] In some embodiments of the first aspect, the box body includes a first wall, the first wall and the first opening are arranged opposite to each other along a first direction, the busbar component is connected to the side of the first wall facing the battery cell assembly, and the electrode terminal is detachably connected to the side of the conductive part facing away from the first wall.

[0023] The first wall can not only provide a mounting base for the busbar component, but also provide a firm support force when the busbar component is connected to the electrode terminals, thereby effectively reducing the risk of damage to the busbar component during installation and removal of the battery cell assembly.

[0024] In some embodiments of the first aspect, the housing further has a second opening, the first opening and the second opening being respectively disposed at opposite ends of the housing along the first direction, the second opening communicating between the channel and the external environment of the battery device. Multiple battery cell assemblies are disposed within each channel, and the multiple battery cell assemblies within the same channel include a first battery cell assembly and a second battery cell assembly, with the first battery cell assembly and the second battery cell assembly being disposed opposite each other along the first direction.

[0025] The first battery cell assembly is configured to be movable in a first direction to enter or exit the channel through the first opening, and the second battery cell assembly is configured to be movable in the first direction to enter or exit the channel through the second opening. A busbar assembly is disposed within the channel, with the first battery cell assembly and the second battery cell assembly located on opposite sides of the busbar assembly along the first direction, respectively. The electrode terminals of the first battery cell assembly and the electrode terminals of the second battery cell assembly are both detachably connected to the conductive portion.

[0026] The above technical solution provides a first opening and a second opening at both ends of the box in a first direction, allowing the first and second battery cell assemblies to be independently removed and installed from different directions. Especially in cases where the channel is long or the number of battery cells inside is large, this two-way opening structure can reduce the travel required to remove and install the battery cells and the operational interference, effectively reducing maintenance difficulty.

[0027] In some embodiments of the first aspect, the busbar assembly includes a first busbar assembly and a second busbar assembly, the first busbar assembly and the second busbar assembly being arranged along a first direction. The first busbar assembly faces the first battery cell assembly along the first direction, and the second busbar assembly faces the second battery cell assembly along the first direction. The electrode terminals of the first battery cell assembly are removably connected to the conductive portion of the first busbar assembly, and the electrode terminals of the second battery cell assembly are removably connected to the conductive portion of the second busbar assembly.

[0028] The first busbar component and the second busbar component are independently configured, and the first busbar component and the second busbar component are respectively connected to the first battery cell assembly and the second battery cell assembly, so that the battery device can achieve partition control, segmented maintenance and local replacement during operation, which can improve the operating stability and maintainability of the battery device.

[0029] In some embodiments of the first aspect, the battery device further includes a heat exchange component connected between the battery cell and the inner wall of the channel.

[0030] The above technical solution introduces heat exchange components to enable the heat generated by the battery cells to be quickly transferred to the box or external cooling structure, reducing heat accumulation and the risk of thermal runaway caused by local temperature rise.

[0031] In some embodiments of the first aspect, the box body is further provided with a pressure relief channel, which connects the channel and the external environment.

[0032] When a battery cell releases gas due to a fault or thermal runaway during normal operation or charging and discharging, the pressure relief channel can provide a quick and effective release path, avoiding the risk of box expansion, cracking or even explosion due to internal pressure accumulation, significantly improving the reliability of the battery device.

[0033] In some embodiments of the first aspect, the pressure relief channel forms a first hole on an outer wall of the housing. The battery device further includes a seal connected to the housing and sealing the first hole, the seal being configured to release the seal on the first hole when pressure within the channel reaches a predetermined threshold.

[0034] The above technical solution introduces a sealant, which can seal the pressure relief channel when the battery device is operating normally, thereby reducing the risk of external impurities entering the pressure relief channel and causing the pressure relief channel to be blocked, thereby further improving the reliability of the battery device.

[0035] In a second aspect, the present application provides an electrical device, which includes a battery device provided by any embodiment of the first aspect, and the battery device is used to store or provide electrical energy.

[0036] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings: Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application; Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application; Figure 3 A schematic side view of a battery device provided in some embodiments of the present application; Figure 4 for Figure 3 Schematic diagram of the cross-section structure along AA; Figure 5 A schematic front view of a battery cell of a battery device provided in some embodiments of the present application; Figure 6 A schematic top view of a battery cell of a battery device provided in some embodiments of the present application; Figure 7 A schematic side view of another battery device provided in some embodiments of the present application; Figure 8 for Figure 7 Schematic diagram of the cross-section structure along FF; Figure 9 A schematic side view of another battery device provided in some embodiments of the present application; Figure 10 for Figure 9 Schematic diagram of the cross-section structure along BB; Figure 11for Figure 10 Schematic diagram of the local enlarged structure at H; Figure 12 for Figure 11 Schematic diagram of the partial split structure shown; Figure 13 A schematic side view of another battery device provided in some embodiments of the present application; Figure 14 for Figure 13 Schematic diagram of the cross-section structure along CC; Figure 15 A schematic diagram of an exploded structure of another battery device provided in some embodiments of the present application; Figure 16 A schematic top view of another battery device provided in some embodiments of the present application; Figure 17 for Figure 16 Schematic diagram of the cross-section structure along EE; Figure 18 A schematic top view of a battery device is provided in some embodiments of the present application.

[0038] The accompanying drawings in the specific implementation manner are as follows: 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 10. Box body; 11. Channel; 12a. First opening; 12b. Second opening; 13. Pressure relief channel; 14. First wall; 200, battery cell assembly; 200a, first battery cell assembly; 200b, second battery cell assembly; 20, battery cell; 21, electrode terminal; 22, housing; 221, first side wall; 222, second side wall; 223, third side wall; 224, fourth side wall; 225, fifth side wall; 226, sixth side wall; 30. Busbar component; 30a. First busbar component; 30b. Second busbar component; 31. Insulating portion; 32. Conductive portion; 33. Groove; 34. First clamping portion; 35. Second clamping portion; 40. Baffle; 50. Buffer parts; 60. Heat exchange components; 70. Seals; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0041] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0044] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0045] The term "plurality" used in this application refers to two or more (including two).

[0046] In this application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "vertical" also includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0047] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and power tools.

[0048] In the development of battery technology, how to improve the maintainability of battery devices is a continuous research direction in battery technology.

[0049] During the use of a battery device, the performance of battery cells gradually deteriorates. Replacing low-performing battery cells can effectively extend the overall service life of the battery device and reduce resource waste. In addition, if a battery cell in the battery device fails or is damaged, removing and replacing it can effectively prevent potential safety risks.

[0050] However, in the related art, since the battery cells are generally bonded to the battery device box with a large amount of glue, the bonded battery cells are difficult to remove or replace; in addition, the battery cells and the busbar components are usually connected by welding, which also makes the battery cells difficult to remove or replace.

[0051] Based on the above considerations, the present application designs a battery device, which includes a housing, a battery cell assembly, and a busbar. A channel is defined within the housing, extending along a first direction. The housing has a first opening at one end along the first direction, connecting the channel to the external environment of the battery device. The battery cell assembly includes at least one battery cell, which is housed within the channel. The battery cell assembly is configured to be movable along the first direction to enter or exit the channel through the first opening. The battery cell includes an electrode terminal. The busbar is disposed within the housing and connected to the housing. The busbar includes a conductive portion exposed to the channel, and the electrode terminal is detachably connected to the conductive portion.

[0052] The battery cell assembly includes a first state and a second state. In the first state, the electrode terminal is electrically connected to the conductive part. In the second state, the electrode terminal is separated from the conductive part. The battery cell assembly can switch between the first state and the second state by moving along the channel.

[0053] Through the above technical solution, when a battery cell needs to be replaced, the battery cell can be directly slid into or out of the channel along the first direction through the first opening without disassembling the entire battery device or performing complicated disassembly and assembly operations, thereby significantly improving the modularity and maintainability of the battery device.

[0054] The battery cells described in the embodiments of the present application are suitable for battery devices and electrical equipment using battery devices. Electrical equipment can be equipment that uses a battery device as a power source or various energy storage systems that use a battery device as an energy storage element. Electrical equipment can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery cars, electric cars, ships, spacecraft, and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0055] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0056] Figure 1 A schematic structural diagram of a vehicle provided for some embodiments of the present application.

[0057] like Figure 1 As shown, a battery device 2 is provided inside the vehicle 1, and the battery device 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used to power the vehicle 1, for example, the battery device 2 can serve as an operating power source for the vehicle 1.

[0058] The vehicle 1 may further include a controller 3 and a motor 4 . The controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of the vehicle 1 during startup, navigation, and driving.

[0059] In some embodiments of the present application, the battery device 2 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0060] In some embodiments, the battery device 2 may be an energy storage device.

[0061] Energy storage devices can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems. They can store electrical energy as needed and deliver it when appropriate. For example, they can store energy during low-demand periods and provide it to users or devices during peak demand periods.

[0062] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0063] Figure 2 This is a schematic diagram of the structural decomposition of a battery device provided in some embodiments of the present application. Figure 3 This is a schematic side view of a battery device provided in some embodiments of the present application. Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA.

[0064] Continue to refer Figures 2 to 4 An embodiment of the present application provides a battery device 2, which includes a box body 10, a battery cell assembly 200 and a busbar component 30. A channel 11 is opened inside the box body 10, and the channel 11 extends along a first direction X. One end of the box body 10 along the first direction X has a first opening 12a, and the first opening 12a connects the channel 11 and the external environment of the battery device 2.

[0065] The battery cell assembly 200 includes at least one battery cell 20, which is housed within the channel 11. The battery cell assembly 200 is configured to move along a first direction X to enter or exit the channel 11 through the first opening 12a. The battery cell 20 includes an electrode terminal 21. A current collector 30 is disposed within and connected to the housing 10. The current collector 30 includes a conductive portion 32 that is exposed to the channel 11. The electrode terminal 21 and the conductive portion 32 are detachably connected.

[0066] The battery cell assembly 200 includes a first state and a second state. In the first state, the electrode terminal 21 is electrically connected to the conductive part 32. In the second state, the electrode terminal 21 is separated from the conductive part 32. The battery cell assembly 200 can switch between the first state and the second state by moving along the channel 11.

[0067] The battery device 2 may include one or more battery cell assemblies 200 for providing voltage and capacity.

[0068] The battery cell assembly 200 may include a plurality of battery cells 20, which are connected in series, in parallel, or in parallel via a busbar 30. Parallel connection means that the plurality of battery cells 20 are connected in both series and parallel.

[0069] The battery cell 20 may be a secondary battery. A secondary battery is a type of battery that can be recharged to activate active materials after the battery cell 20 is discharged and can be used continuously.

[0070] As an example, the battery cell 20 can be a lithium-ion battery cell 20, a sodium-ion battery cell 20, a sodium-lithium-ion battery cell 20, a lithium metal battery cell 20, a sodium metal battery cell 20, a lithium-sulfur battery cell 20, a magnesium-ion battery cell 20, a nickel-hydrogen battery cell 20, a nickel-cadmium battery cell 20, a lead-acid battery cell 20, etc.

[0071] As an example, the battery cell 20 may be a prismatic battery cell, a soft-pack battery cell, or a battery cell of another shape. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal battery cells. Polygonal battery cells are, for example, hexagonal battery cells.

[0072] The battery cell assembly 200 is typically formed by arranging a plurality of battery cells 20. As an example, the battery cell assembly 200 may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 with a cable tie.

[0073] The battery device 2 may be a battery pack, which includes a case 10 and one or more battery cell assemblies 200 . The battery cell assemblies 200 are housed in the case 10 .

[0074] The first opening 12 a can be understood as the channel 11 being formed on the end surface of the box body 10 along the first direction X and open to the outside.

[0075] As an example, one end of the box body 10 along the first direction X has a first opening 12a, that is, one end of the channel 11 along the first direction X can communicate with the external environment, and the other end of the channel 11 along the first direction X is closed.

[0076] As an example, the box body 10 has a first opening 12a at one end along the first direction X and a second opening 12b at the other end. That is, both ends of the channel 11 along the first direction X can communicate with the external environment.

[0077] The busbar component 30 is used to collect the output power of the plurality of battery cells 20 .

[0078] The confluence member 30 may be detachably connected to the housing 10 or integrally mounted on the housing 10. The confluence member 30 may be directly connected to the housing 10 or secured to the housing 10 via other components. For example, the confluence member 30 and the housing 10 may be connected by, but is not limited to, welding, bolting, clamping, riveting, or bonding.

[0079] The detachable connection between the electrode terminal 21 and the current collecting component 30 can be achieved by, but is not limited to, plug-in connection, snap-on connection, spring compression connection, or magnetic attraction.

[0080] Through the above technical solution, when the battery cell 20 needs to be replaced, the battery cell 20 can be directly slid into or out of the channel 11 along the first direction X through the first opening 12a, without having to disassemble the entire battery device 2 or perform complicated disassembly operations, thereby significantly improving the modularity and maintainability of the battery device 2. In addition, the installation and removal of the battery cell 20 by sliding along the channel 11 effectively reduces the difficulty of operation.

[0081] For example, when a battery cell 20 of the battery device 2 fails, the connection between the electrode terminal 21 of the failed battery cell 20 and the busbar 30 can be disconnected, and the failed battery cell 20 can be directly slid out of the channel 11 along the first direction X through the first opening 12a, and the failed battery cell 20 can be repaired or replaced with a new battery cell 20. Then, the repaired battery cell 20 or the new battery cell 20 can be slid into the channel 11 along the first direction X, and the electrode terminals 21 of the battery cell 20 can be connected to the busbar 30.

[0082] It should be noted that the electrode terminals 21 of the battery cells 20 can be separated from the busbar 30 while the battery cells 20 are sliding out of the channel 11 along the first direction X. For example, the electrode terminals 21 and the busbar 30 are detachably connected by plugging, snapping, or magnetic attraction. Alternatively, the connection between the electrode terminals 21 of the battery cells 20 and the busbar 30 can be first disconnected, i.e., the electrode terminals 21 are separated from the conductive portion 32, and then the battery cells 20 are slid out of the channel 11 along the first direction X. For example, the electrode terminals 21 and the busbar 30 are detachably connected by a switchable lock.

[0083] Similarly, the electrode terminals 21 of the battery cells 20 may be connected to the busbar 30 while the battery cells 20 are sliding into the channel 11 along the first direction X. For example, the electrode terminals 21 and the busbar 30 may be removably connected by plugging, snapping, or magnetic attraction. Alternatively, the battery cells 20 may be first slid into the channel 11 along the first direction X, and then the electrode terminals 21 of the battery cells 20 may be connected to the busbar 30. For example, the electrode terminals 21 and the busbar 30 may be removably connected by a switchable lock.

[0084] In some embodiments, the battery cell 20 includes a shell 22 and an electrode assembly, the electrode assembly is accommodated in the shell 22, the electrode terminal 21 is disposed in the shell 22, and at least part of the electrode terminal 21 is located outside the shell 22, and the electrode terminal 21 is electrically connected to the electrode tab of the electrode assembly.

[0085] Figure 5 This is a schematic front view of a battery cell of a battery device provided in some embodiments of the present application. Figure 6 This is a schematic top view of a battery cell of a battery device provided in some embodiments of the present application. Figure 7 This is a side view of another battery device provided in some embodiments of the present application. Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along FF.

[0086] Continue to refer Figures 5 to 8 In some embodiments, the housing 22 includes a first sidewall 221 and a second sidewall 222 that face each other along a first direction X. The first sidewall 221 faces the first opening 12a, and the second sidewall 222 faces away from the first opening 12a. The electrode terminal 21 can be disposed on the second sidewall 222, and the busbar 30 is disposed opposite the electrode terminal 21 along the first direction X.

[0087] Exemplarily, the busbar member 30 is directed along the first direction X toward the electrode terminal 21 .

[0088] In some embodiments, the housing 22 further includes a third sidewall 223 and a fourth sidewall 224 that are opposite to each other along the second direction Y. The third sidewall 223 is connected between the first sidewall 221 and the second sidewall 222, and the fourth sidewall 224 is connected between the first sidewall 221 and the second sidewall 222. The first direction X intersects the second direction Y. The electrode terminal 21 may be disposed on at least one of the third sidewall 223 and the fourth sidewall 224, and the busbar 30 is disposed opposite the electrode terminal 21 along the second direction Y.

[0089] Exemplarily, the busbar member 30 is directed along the second direction Y toward the electrode terminal 21 .

[0090] In some embodiments, the electrode terminal 21 is disposed on the third sidewall 223 .

[0091] For example, the electrode terminal 21 may include a positive terminal and a negative terminal, both of which are disposed on the third sidewall 223 , and the busbar 30 faces the positive terminal and the negative terminal along the second direction Y.

[0092] In some embodiments, the electrode terminal 21 is disposed on the fourth sidewall 224 .

[0093] Illustratively, the electrode terminal 21 may include a positive terminal and a negative terminal, both of which are disposed on the fourth sidewall 224 , and the busbar 30 faces the positive terminal and the negative terminal along the second direction Y.

[0094] In some embodiments, the electrode terminal 21 is disposed on the third sidewall 223 and the fourth sidewall 224 .

[0095] For example, the electrode terminal 21 may include a positive terminal and a negative terminal, one of which is disposed on the third side wall 223, and the other of which is disposed on the fourth side wall 224. The busbar component 30 may include a first busbar portion and a second busbar portion, each disposed on either side of the battery cell 20 along the second direction Y. The first busbar portion is disposed opposite the positive terminal along the second direction Y and faces the positive terminal along the second direction Y. The second busbar portion is disposed opposite the negative terminal along the second direction Y and faces the negative terminal along the second direction Y.

[0096] In some embodiments, the first direction X is perpendicular to the second direction Y.

[0097] In some embodiments, the housing 22 further includes a fifth sidewall 225 and a sixth sidewall 226 that are opposite to each other along a third direction Z. The fifth sidewall 225 is connected between the first sidewall 221 and the second sidewall 222, and the sixth sidewall 226 is connected between the first sidewall 221 and the second sidewall 222. The fifth sidewall 225 is connected between the third sidewall 223 and the fourth sidewall 224, and the sixth sidewall 226 is connected between the third sidewall 223 and the fourth sidewall 224. The first direction X and the second direction Y are perpendicular to the third direction Z. The electrode terminal 21 may be disposed on at least one of the fifth sidewall 225 and the sixth sidewall 226, and the busbar 30 is disposed opposite the electrode terminal 21 along the third direction Z.

[0098] Illustratively, the bus member 30 faces the electrode terminal 21 along the third direction Z.

[0099] In some embodiments, the electrode terminal 21 is disposed on the fifth sidewall 225 .

[0100] Illustratively, the electrode terminal 21 may include a positive terminal and a negative terminal, both of which are disposed on the fifth sidewall 225 , and the busbar component 30 faces the positive terminal and the negative terminal along the third direction Z.

[0101] like Figures 7 and 8 As shown, in some embodiments, the electrode terminal 21 is disposed on the sixth side wall 226 .

[0102] Illustratively, the electrode terminal 21 may include a positive terminal and a negative terminal, both of which are disposed on the sixth side wall 226 , and the busbar component 30 faces the positive terminal and the negative terminal along the third direction Z.

[0103] As an example, the dimensions of the conductive part 32 of the busbar component 30 along the third direction Z can be reasonably set so that after the battery cell 20 enters the channel 11 and reaches the preset position, the conductive part 32 and the electrode terminal 21 can abut against each other, and there is a certain extrusion force between the conductive part 32 and the electrode terminal 21 in the third direction Z to improve the electrical connection reliability between the conductive part 32 and the electrode terminal 21.

[0104] As another example, magnetic attraction can also be used to achieve the connection between the conductive part 32 and the electrode terminal 21, so that after the battery cell 20 enters the channel 11 and reaches the preset position, the conductive part 32 and the electrode terminal 21 can be magnetically attracted to each other to improve the electrical connection reliability between the conductive part 32 and the electrode terminal 21.

[0105] In some embodiments, the electrode terminal 21 is disposed on the fifth sidewall 225 and the sixth sidewall 226 .

[0106] For example, the electrode terminal 21 may include a positive terminal and a negative terminal, one of which is disposed on the fifth side wall 225, and the other of which is disposed on the sixth side wall 226. The busbar component 30 may include a first busbar portion and a second busbar portion, each disposed on either side of the battery cell 20 along the third direction Z. The first busbar portion is disposed opposite the positive terminal along the third direction Z and faces the positive terminal along the third direction Z. The second busbar portion is disposed opposite the negative terminal along the third direction Z and faces the negative terminal along the third direction Z.

[0107] In some embodiments, a sliding portion is provided on the side of the shell 22 facing away from the electrode assembly, and the sliding portion extends along the first direction X. The inner wall of the channel 11 is provided with a mating portion corresponding to the sliding portion, and the sliding portion and the mating portion cooperate to realize the movable setting of the battery cell 20 along the first direction X.

[0108] As an example, the sliding portion is a slider, and the matching portion is a sliding groove.

[0109] As another example, the sliding portion is a sliding groove, and the matching portion is a slider.

[0110] The cooperation between the sliding portion and the matching portion can not only improve the sliding stability of the battery cell 20 during installation and removal, but also play a certain positioning role during the installation of the battery cell 20, thereby reducing the difficulty of assembly.

[0111] In some embodiments, the busbar assembly 30 further includes an insulating portion 31 connected to the housing 10. A groove 33 is provided on a side of the insulating portion 31 facing the electrode terminal 21. A conductive portion 32 is disposed within the groove 33. At least a portion of the electrode terminal 21 is inserted into the groove 33 and contacts the conductive portion 32.

[0112] As an example, a portion of the conductive portion 32 is exposed in the groove 33, and the other portion is covered by the insulating portion 31. That is, the conductive portion 32 and the insulating portion 31 are formed by an in-mold insert.

[0113] The electrode terminal 21 may be partially inserted into the groove 33 and the other part may be located outside the groove 33 ; the electrode terminal 21 may also be fully inserted into the groove 33 .

[0114] The insulating portion 31 is responsible for electrical isolation and structural support, and the conductive portion 32 is responsible for collecting the output power of the plurality of battery cells 20 .

[0115] Optionally, the conductive portion 32 may be, but is not limited to, a plate-shaped structure, a sheet-shaped structure, or an elastic reed-shaped structure.

[0116] The above technical solution realizes a detachable connection between the electrode terminal 21 and the busbar component 30 by plugging, has a simple structure, is easy to assemble, and helps to improve the installation and disassembly efficiency of the battery cell 20.

[0117] Figure 9 This is a side view of another battery device provided in some embodiments of the present application. Figure 10 for Figure 9 Schematic diagram of the cross-section structure along BB, Figure 11 for Figure 10 Schematic diagram of the local enlarged structure at H, Figure 12 for Figure 11 Schematic diagram of the local split structure shown.

[0118] Continue to refer Figures 9 to 12 In some embodiments, the current collecting component 30 further includes a first clamping portion 34, which is disposed on the insulating portion 31 and located within the groove 33. The electrode terminal 21 is provided with a second clamping portion 35 corresponding to the first clamping portion 34, and the first clamping portion 34 is configured to engage with the second clamping portion 35.

[0119] The first clamping portion 34 can be detachably connected to the insulating portion 31 or integrally provided on the insulating portion 31. The first clamping portion 34 can be directly connected to the insulating portion 31 or secured to the insulating portion 31 by other components. As an example, the connection between the first clamping portion 34 and the insulating portion 31 can be, but is not limited to, bolting, clamping, riveting, or bonding.

[0120] The second clamping portion 35 can be detachably connected to the electrode terminal 21 or integrally provided on the electrode terminal 21. The second clamping portion 35 can be directly connected to the electrode terminal 21 or secured to the electrode terminal 21 by other components. As an example, the connection between the second clamping portion 35 and the electrode terminal 21 can be, but is not limited to, bolting, clamping, riveting, or bonding.

[0121] The first clamping portion 34 corresponds to the second clamping portion 35 in the sense that the first clamping portion 34 and the second clamping portion 35 are adapted to each other in terms of position, structure, shape and size.

[0122] Exemplarily, one of the first clamping portion 34 and the second clamping portion 35 is a clamping block, and the other of the first clamping portion 34 and the second clamping portion 35 is a clamping slot.

[0123] The above technical solution can improve the reliability of the connection between the electrode terminal 21 and the current collecting component 30 by introducing the snap-fitting cooperation between the first snap-fitting portion 34 and the second snap-fitting portion 35 .

[0124] In some embodiments, the first clamping portion 34 and the insulating portion 31 are integrally formed. This simplifies the manufacturing process by eliminating the need for an additional connection process. Furthermore, the integral structure of the first clamping portion 34 and the insulating portion 31 provides greater structural strength than would be achieved by an additional connection process.

[0125] In some embodiments, the second clamping portion 35 and the electrode terminal 21 are integrally formed. This simplifies the manufacturing process by eliminating the need for an additional connection process. Furthermore, the integral structure of the second clamping portion 35 and the electrode terminal 21 provides greater structural strength than would be achieved by an additional connection process.

[0126] Figure 13 This is a side view of another battery device provided in some embodiments of the present application. Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure along CC.

[0127] Continue to refer Figures 13 and 14 In some embodiments, the battery device 2 further includes a baffle 40 , which is detachably connected to the box body 10 and closes the first opening 12 a .

[0128] For example, the baffle 40 may be, but is not limited to, connected to the box body 10 in a detachable manner by means of bolt connection, plug connection, or snap connection.

[0129] As an example, the baffle 40 is connected to the box body 10 by bolts.

[0130] Optionally, the baffle 40 may be made of, but is not limited to, stainless steel, aluminum, aluminum alloy, polycarbonate, polypropylene, polyethylene, rubber or other materials.

[0131] The above technical solution introduces the baffle 40 , which can protect the battery cells 20 , thereby reducing the risk of external impurities invading the channel 11 and damaging the battery cells 20 , thereby improving the reliability of the battery device 2 .

[0132] In some embodiments, the baffle 40 is rotatably connected to the housing 10, and the baffle 40 can close and open the first opening 12a by rotating itself. In other words, the baffle 40 is a flip-type structure.

[0133] Illustratively, the rotation axis of the baffle 40 is perpendicular to the first direction X, and the rotation axis of the baffle 40 may be parallel to the second direction Y or the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0134] In some embodiments, the battery device 2 further includes a buffer member 50 , which is disposed between the baffle 40 and the battery cell 20 . The elastic modulus of the buffer member 50 is smaller than that of the baffle 40 .

[0135] The buffer member 50 may be fixed to the baffle 40. The buffer member 50 may be detachably connected to the baffle 40 or integrally provided on the baffle 40. The buffer member 50 may be directly connected to the baffle 40 or secured to the baffle 40 via other components. For example, the buffer member 50 and the baffle 40 may be connected by, but is not limited to, bolting, plugging, or bonding.

[0136] The buffer member 50 may also be fixed to the battery cell 20. The buffer member 50 may be removably connected to the battery cell 20. The buffer member 50 may be directly connected to the battery cell 20 or secured to the battery cell 20 via other components. For example, the buffer member 50 and the battery cell 20 may be connected by, but is not limited to, bolting, plugging, or bonding.

[0137] Of course, the buffer member 50 may also be fixedly connected neither to the baffle 40 nor to the battery cell 20 . In the battery device 2 , the buffer member 50 is relatively fixed by the squeezing force between the baffle 40 and the battery cell 20 .

[0138] Optionally, the buffer member 50 may be, but is not limited to, a sheet-like structure or a block-like structure.

[0139] Optionally, the buffer member 50 may be made of, but not limited to, foam, rubber, polyurethane foam, or expandable polypropylene.

[0140] The buffer member 50 of the above-described technical solution acts as a protective barrier, preferentially deforming and absorbing energy when the battery device 2 is subjected to external impact or vibration. This effectively reduces the peak impact force transmitted to the battery cells 20, reducing the impact energy directly acting on the battery cells 20, thereby minimizing the risk of damage to the battery cells 20 and further improving the reliability of the battery device 2. Furthermore, the introduction of the buffer member 50 reduces friction between the baffle 40 and the battery cells 20, reducing the risk of scratches on the battery cells 20 by the baffle 40 during assembly and disassembly.

[0141] As an example, the elastic modulus of the buffer member 50 and the baffle 40 can be tested with reference to the national standard GBT22315-2008 “Test method for elastic modulus and Poisson's ratio of metallic materials”.

[0142] In some embodiments, the battery device 2 further includes a sealing ring, which is disposed between the baffle 40 and the box body 10 to improve the sealing performance of the battery device 2 .

[0143] In some embodiments, there are multiple channels 11 and multiple battery cell assemblies 200 . Multiple channels 11 are arranged at intervals along the second direction Y. The first direction X intersects the second direction Y. At least one battery cell assembly 200 is arranged in each channel 11 .

[0144] For example, the number of channels 11 may be two, three, four, eight or more, and the number of battery cell assemblies 200 in each channel 11 may be one, two, three, four or more.

[0145] As an example, the number of channels 11 is eight, a battery cell assembly 200 is disposed in each channel 11 , and each battery cell assembly 200 includes four battery cells 20 .

[0146] The above technical solution enables the battery cell assembly 200 in each channel 11 to have an independent plugging and unplugging path, and will not interfere with the battery cell assemblies 200 in other channels 11 during assembly and disassembly, thereby further improving the maintainability of the battery device 2.

[0147] In some embodiments, the first direction X is perpendicular to the second direction Y.

[0148] In some embodiments, each battery cell assembly 200 includes a plurality of battery cells 20 . In each battery cell assembly 200 , the plurality of battery cells 20 are arranged along the second direction Y, and the electrode terminals 21 of the plurality of battery cells 20 all face the busbar 30 .

[0149] The above technical solution helps to reduce the number of channels 11 to a certain extent, thereby simplifying the overall structural complexity of the housing 10. Furthermore, this reduction in the number of channels 11 helps to improve the utilization efficiency of the internal space of the housing 10, accommodating more battery cells 20 within a limited volume and increasing the energy density of the battery device 2. At the same time, this arrangement still maintains good maintainability. Thus, the above technical solution achieves a good balance between maintainability, structural complexity, and energy density of the battery device 2.

[0150] In some embodiments, in each battery cell assembly 200 , any two adjacent battery cells 20 are fixedly connected.

[0151] Exemplarily, there are eight channels 11 , and a battery cell assembly 200 is disposed in each channel 11 . Each battery cell assembly 200 includes four battery cells 20 . The four battery cells 20 are arranged and fixed to form an independent module.

[0152] As an example, in each of the battery cell assemblies 200 , any two adjacent battery cells 20 are bonded and connected.

[0153] The above technical solution can effectively suppress the relative displacement caused by vibration or impact during transportation, installation or operation by fixedly connecting adjacent battery cells 20, thereby reducing the risk of contact sliding, friction or surface scratches between adjacent battery cells 20.

[0154] In some embodiments, a heat shield is provided between any two adjacent battery cells 20, and the battery cells on both sides of the heat shield can be connected to the heat shield respectively. Optionally, the battery cells 20 are bonded to the heat shield.

[0155] In some embodiments, the box body 10 includes a first wall 14, which is arranged opposite to the first opening 12a along the first direction X. The busbar component 30 is connected to the side of the first wall 14 facing the battery cell assembly 200, and the electrode terminal 21 is detachably connected to the side of the conductive part 32 facing away from the first wall 14.

[0156] Exemplarily, the above structure can be understood as a single-sided first opening 12a structure of the box body 10, that is, the end of the channel 11 away from the first wall 14 along the first direction X can be connected to the external environment, and the end of the channel 11 close to the first wall 14 along the first direction X is closed.

[0157] The first wall 14 of the battery cell assembly 200 can not only provide a mounting base for the busbar component 30 , but also provide a firm support force during the process of connecting the busbar component 30 to the electrode terminal 21 , thereby effectively reducing the risk of damage to the busbar component 30 during the installation and disassembly of the battery cell assembly 200 .

[0158] Figure 15 A schematic diagram of the exploded structure of another battery device provided in some embodiments of the present application.

[0159] Continue to refer Figure 15 In some embodiments, the housing further has a second opening 12b. The first opening 12a and the second opening 12b are respectively disposed at opposite ends of the housing 10 along the first direction X. The second opening 12b connects the channel 11 with the external environment of the battery device 2. Multiple battery cell assemblies 200 are disposed within each channel 11. The multiple battery cell assemblies 200 within the same channel 11 include a first battery cell assembly 200a and a second battery cell assembly 200b. The first battery cell assembly 200a and the second battery cell assembly 200b are disposed opposite each other along the first direction X.

[0160] The first battery cell assembly 200a is configured to move along a first direction X to enter or exit the channel 11 through the first opening 12a. The second battery cell assembly 200b is configured to move along the first direction X to enter or exit the channel 11 through the second opening 12b. A busbar assembly 30 is disposed within the channel 11, with the first and second battery cell assemblies 200a, 200b located on opposite sides of the busbar assembly 30 along the first direction X. The electrode terminals 21 of the first and second battery cell assemblies 200a, 200b are both detachably connected to the conductive portion 32.

[0161] Exemplarily, the above structure can be understood as a double-sided opening structure of the box body 10 , that is, both ends of the channel 11 along the first direction X can be in communication with the external environment.

[0162] The busbar component 30 is located in the middle area of the channel 11 , and the first battery cell assembly 200 a and the second battery cell assembly 200 b are detachably connected to the busbar component 30 from opposite sides of the busbar component 30 along the first direction X.

[0163] The above technical solution provides a first opening 12a and a second opening 12b at both ends of the housing 10 in the first direction X, allowing the first battery cell assembly 200a and the second battery cell assembly 200b to be independently removed and installed from different directions. This double-sided opening structure can reduce the travel and operational interference required to remove and install the battery cells 20, effectively reducing maintenance difficulties, especially when the channel 11 is long or contains a large number of battery cells 20.

[0164] In some embodiments, the housing 10 includes a first wall 14 , the first wall 14 is located between the first battery cell assembly 200 a and the second battery cell assembly 200 b , and the busbar 30 is connected to opposite sides of the first wall 14 along the first direction X.

[0165] In some embodiments, each first battery cell assembly 200 a includes a plurality of first battery cells, and the plurality of first battery cells are arranged along the second direction Y.

[0166] In some embodiments, in each first battery cell assembly 200 a , any two adjacent first battery cells are fixedly connected.

[0167] In some embodiments, each second battery cell assembly 200 b includes a plurality of second battery cells, and the plurality of second battery cells are arranged along the second direction Y.

[0168] In some embodiments, in each second battery cell assembly 200 b , any two adjacent second battery cells are fixedly connected.

[0169] In some embodiments, the busbar assembly 30 includes a first busbar assembly 30a and a second busbar assembly 30b, which are arranged along a first direction X. The first busbar assembly 30a faces the first battery cell assembly 200a along the first direction X, and the second busbar assembly 30b faces the second battery cell assembly 200b along the first direction X. The electrode terminals 21 of the first battery cell assembly 200a are detachably connected to the conductive portions 32 of the first busbar assembly 30a, and the electrode terminals 21 of the second battery cell assembly 200b are detachably connected to the conductive portions 32 of the second busbar assembly 30b.

[0170] The first busbar 30a is used to collect the output power of the plurality of first battery cells in the first battery cell assembly 200a, and the second busbar 30b is used to collect the output power of the plurality of second battery cells in the second battery cell assembly 200b.

[0171] The first busbar component 30a and the second busbar component 30b are independently configured, and the first busbar component 30a and the second busbar component 30b are respectively connected to the first battery cell assembly 200a and the second battery cell assembly 200b, so that the battery device 2 can achieve partition control, segmented maintenance and local replacement during operation, which can improve the operating stability and maintainability of the battery device 2.

[0172] In some embodiments, the first busbar 30 a and the second busbar 30 b are spaced apart along the first direction X.

[0173] In some embodiments, the first busbar component 30 a and the second busbar component 30 b are connected, which can improve the stability of the first busbar component 30 a and the second busbar component 30 b.

[0174] In some embodiments, the battery device 2 further includes a heat exchange component 60 , which is connected between the battery cell 20 and the inner wall of the channel 11 .

[0175] For example, the heat exchange component 60 can be thermally conductively connected (e.g., bonded) to at least a portion of the battery cell 20. A heat exchange medium flows within the heat exchange body and exchanges heat with the battery cell 20 through its sidewalls. When the temperature of the battery cell 20 is too high, the heat exchange component 60 can cool the battery cell 20. When the temperature of the battery cell 20 is too low, the heat exchange component 60 can keep the battery cell 20 warm, thereby extending the service life of the battery cell 20.

[0176] As an example, a medium flow channel is opened inside the heat exchange component 60, and the medium flow channel is used to accommodate the heat exchange medium.

[0177] The medium flow channel inside the heat exchange component 60 may extend along a straight line or a curve, and the selection may be made according to the actual application environment.

[0178] In some examples, the heat exchange component 60 contacts the sidewall of the battery cell 20 with the largest area to improve the heat exchange efficiency of the battery.

[0179] Alternatively, the heat exchange medium may be a liquid, which may include but is not limited to water, ethylene glycol, and a mixture of water and ethylene glycol.

[0180] The heat exchange component 60 may be fixed to the housing 10 or detachably connected to the housing 10. The heat exchange component 60 may be directly connected to the housing 10 or secured to the housing 10 via other components. For example, the heat exchange component 60 and the housing 10 may be connected by, but is not limited to, bolting, plugging, or bonding.

[0181] The heat exchange component 60 may also be fixed to the battery cell 20. The heat exchange component 60 may be detachably connected to the battery cell 20. The heat exchange component 60 may be directly connected to the battery cell 20 or secured to the battery cell 20 via other components. For example, the connection between the heat exchange component 60 and the battery cell 20 may include, but is not limited to, bolting, plugging, or bonding.

[0182] Of course, the heat exchange component 60 may be fixedly connected neither to the baffle 40 nor to the battery cell 20 . In the battery device 2 , the heat exchange component 60 is relatively fixed by the squeezing force between the baffle 40 and the battery cell 20 .

[0183] The above technical solution introduces the heat exchange component 60 so that the heat generated by the battery cell 20 can be quickly transferred to the box 10 or the external cooling structure, thereby reducing heat accumulation and reducing the risk of thermal runaway caused by local temperature rise.

[0184] In some embodiments, the heat exchange component 60 is a plate-shaped structure.

[0185] In some embodiments, the housing 10 includes a bottom wall located on one side of the housing 10 along the third direction Z. The battery cells 20 are supported on the bottom wall. The first direction X and the second direction Y are perpendicular to the third direction Z. The heat exchange component 60 is connected between the battery cells 20 and the bottom wall.

[0186] In some embodiments, there are multiple channels 11 and multiple heat exchange components 60 , and the multiple heat exchange components 60 and the multiple channels 11 are arranged in a one-to-one correspondence.

[0187] Figure 16 This is a schematic top view of another battery device provided in some embodiments of the present application. Figure 17 for Figure 16 Schematic diagram of the cross-sectional structure along EE.

[0188] Continue to refer Figures 16 and 17 In some embodiments, the box body 10 is further provided with a pressure relief channel 13 , which connects the channel 11 with the external environment.

[0189] Exemplarily, the pressure relief channel 13 may be, but is not limited to, a straight, curved, or bifurcated channel.

[0190] When the battery cell 20 releases gas due to a fault or thermal runaway during normal operation or charging and discharging, the pressure relief channel 13 can provide a quick and effective release path, avoiding the risk of expansion, cracking or even explosion of the box 10 due to internal pressure accumulation, significantly improving the reliability of the battery device 2.

[0191] Figure 18 A schematic top view of a battery device is provided in some embodiments of the present application.

[0192] Continue to refer Figure 18 In some embodiments, the pressure relief channel 13 forms a first hole on the outer wall of the housing 10. The battery device 2 further includes a seal 70 connected to the housing 10 and sealing the first hole. The seal 70 is configured to release the seal on the first hole when the pressure in the channel 11 reaches a preset threshold.

[0193] Exemplarily, the first hole can be understood as an outlet of the pressure relief channel 13 , which is used to release gas from the interior of the box body 10 to the external environment when the gas pressure in the channel 11 increases abnormally.

[0194] The sealing member 70 may be detachably connected to the housing 10 or integrally provided on the housing 10. The sealing member 70 may be directly connected to the housing 10 or secured to the housing 10 by other components. For example, the sealing member 70 may be connected to the housing 10 by, but is not limited to, snap-fitting, plug-fitting, or bonding.

[0195] Optionally, the sealing member 70 may be, but is not limited to, a sheet-like structure, a cap-like structure, or a film-like structure.

[0196] Seal 70 is designed to automatically release its seal on the first hole when the pressure within channel 11 reaches a preset threshold, thereby opening the pressure relief path. This "release" can manifest as a diaphragm rupture, rubber valve detachment, or sealing layer springing open, and the specific design is determined by the operating environment.

[0197] In other words, the pressure relief channel 13 and the seal 70 together constitute a passively triggered pressure relief unit, which enables the battery device 2 to release the internal pressure in a timely manner when encountering dangers such as gas expansion and thermal runaway, thereby reducing the risk of structural damage or explosion of the battery device 2 and improving the reliability of the battery device 2.

[0198] The preset threshold can be a specific value or a value range, and can be set according to the actual application environment.

[0199] Optionally, the sealing member 70 may be a pressure relief valve, a pressure relief diaphragm, an elastic rubber plug or an elastic rubber pad, etc.

[0200] The above technical solution introduces the seal 70. When the battery device 2 is operating normally, the seal 70 can seal the pressure relief channel 13 to reduce the risk of external impurities entering the pressure relief channel 13 and causing the pressure relief channel 13 to be blocked, thereby further improving the reliability of the battery device 2.

[0201] According to some embodiments of the present application, the present application further provides an electrical device, comprising a battery device 2 according to any of the above solutions, wherein the battery device 2 is used to store or provide electrical energy.

[0202] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution. All technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0203] To better understand the battery device 2 provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned battery device 2 in actual application is provided herein for illustration.

[0204] An embodiment of the present application provides a battery device 2, which includes a case 10, a battery cell assembly 200 and a busbar component 30. A channel 11 is provided inside the case 10, and the channel 11 extends along a first direction X. One end of the case 10 along the first direction X has a first opening 12a, and the first opening 12a connects the channel 11 and the external environment of the battery device.

[0205] The battery cell assembly 200 includes at least one battery cell 20, which is housed within the channel 11. The battery cell assembly 200 is configured to move along a first direction X to enter or exit the channel 11 through the first opening 12a. The battery cell 20 includes an electrode terminal 21. A busbar assembly 30 is disposed within the housing 10 and fixedly connected thereto. The busbar assembly 30 includes an insulating portion 31 and a conductive portion 32. The insulating portion 31 has a groove 33 on the side facing the electrode terminal 21. The insulating portion 31 is connected to the housing 10, while the conductive portion 32 is exposed to the channel 11 and disposed within the groove 33. At least a portion of the electrode terminal 21 is inserted into the groove 33 and contacts the conductive portion 32.

[0206] The battery cell assembly 200 includes a first state and a second state. In the first state, the electrode terminal 21 is electrically connected to the conductive part 32. In the second state, the electrode terminal 21 is separated from the conductive part 32. The battery cell assembly 200 can switch between the first state and the second state by moving along the channel 11.

[0207] The baffle 40 is detachably connected to the housing 10 and closes the first opening 12a. The buffer 50 is disposed between the baffle 40 and the battery cell 20, and the buffer 50 has a smaller elastic modulus than the baffle 40. The heat exchange component 60 is connected between the battery cell 20 and the inner wall of the channel 11.

[0208] Through the above technical solution, when the battery cell 20 needs to be replaced, the battery cell 20 can be directly slid into or out of the channel 11 along the first direction X through the first opening 12a, without having to disassemble the entire battery device 2 or perform complicated disassembly operations, thereby significantly improving the modularity and maintainability of the battery device 2. In addition, the installation and removal of the battery cell 20 by sliding along the channel 11 effectively reduces the difficulty of operation.

[0209] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0210] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: a box body, wherein a channel is formed inside the box body, the channel extending along a first direction, and one end of the box body along the first direction has a first opening, the first opening connecting the channel and the external environment of the battery device; a battery cell assembly comprising at least one battery cell, the battery cell assembly being accommodated in the channel, the battery cell assembly being configured to be movable along the first direction to enter or exit the channel through the first opening, the battery cell comprising an electrode terminal; a current collecting component disposed in the box body and connected to the box body, the current collecting component including a conductive portion exposed to the channel, the electrode terminal being detachably connected to the conductive portion; The battery cell assembly includes a first state and a second state. In the first state, the electrode terminal is electrically connected to the conductive part. In the second state, the electrode terminal is separated from the conductive part. The battery cell assembly can switch between the first state and the second state by moving along the channel.

2. The battery device according to claim 1, wherein: The current collecting component further includes an insulating portion connected to the box body, and a groove is provided on a side of the insulating portion facing the electrode terminal; The conductive portion is disposed in the groove, and at least a portion of the electrode terminal is inserted into the groove and contacts the conductive portion.

3. The battery device according to claim 2, characterized in that The confluence component further includes a first clamping portion, which is provided on the insulating portion and located in the groove; The electrode terminal is provided with a second clamping portion corresponding to the first clamping portion, and the first clamping portion is used for clamping and matching with the second clamping portion.

4. The battery device according to claim 1, wherein: The battery device further includes a baffle, which is detachably connected to the box body and closes the first opening.

5. The battery device according to claim 4, characterized in that The battery device further includes a buffer member disposed between the baffle and the battery cell, wherein the buffer member has an elastic modulus smaller than that of the baffle.

6. The battery device according to claim 1, wherein: There are a plurality of channels and a plurality of battery cell assemblies, and the plurality of channels are spaced apart along a second direction, and the first direction intersects the second direction; At least one battery cell assembly is disposed in each of the channels.

7. The battery device according to claim 6, characterized in that Each of the battery cell assemblies includes a plurality of the battery cells. In each of the battery cell assemblies, the plurality of battery cells are arranged along the second direction, and the electrode terminals of the plurality of battery cells all face the busbar.

8. The battery device according to claim 7, characterized in that In each of the battery cell assemblies, any two adjacent battery cells are fixedly connected.

9. The battery device according to claim 1, wherein: The box body includes a first wall, which is arranged opposite to the first opening along the first direction. The busbar component is connected to the side of the first wall facing the battery cell assembly, and the electrode terminal is detachably connected to the side of the conductive part facing away from the first wall.

10. The battery device according to claim 1, wherein: The box body has a second opening, the first opening and the second opening are respectively arranged at two ends of the box body along the first direction, and the second opening communicates with the channel and the external environment of the battery device; A plurality of battery cell assemblies are arranged in each of the channels, and the plurality of battery cell assemblies located in the same channel include a first battery cell assembly and a second battery cell assembly, wherein the first battery cell assembly and the second battery cell assembly are arranged opposite to each other along the first direction; The first battery cell assembly is configured to be movable along the first direction to enter or exit the channel from the first opening, and the second battery cell assembly is configured to be movable along the first direction to enter or exit the channel from the second opening; The busbar component is arranged in the channel, the first battery cell assembly and the second battery cell assembly are respectively located on two opposite sides of the busbar component along the first direction, and the electrode terminals of the first battery cell assembly and the electrode terminals of the second battery cell assembly are both detachably connected to the conductive part.

11. The battery device according to claim 10, characterized in that The confluence component includes a first confluence component and a second confluence component, and the first confluence component and the second confluence component are arranged along the first direction; The first busbar is oriented toward the first battery cell assembly along the first direction, and the second busbar is oriented toward the second battery cell assembly along the first direction; The electrode terminal of the first battery cell assembly is detachably connected to the conductive portion of the first busbar, and the electrode terminal of the second battery cell assembly is detachably connected to the conductive portion of the second busbar.

12. The battery device according to claim 1, wherein: The battery device further includes a heat exchange component connected between the battery cell and an inner wall of the channel.

13. The battery device according to claim 1, wherein: The box body is further provided with a pressure relief channel, which connects the channel with the external environment.

14. The battery device according to claim 13, wherein: The pressure relief channel forms a first hole on the outer wall surface of the box body; The battery device further includes a sealing member connected to the case and sealing the first hole. The sealing member is configured to release the sealing of the first hole when the pressure in the channel reaches a preset threshold.

15. An electrical device, characterized in that: The battery device comprises the battery device according to any one of claims 1 to 14, wherein the battery device is used to store or provide electrical energy.

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