Battery connection assembly, battery apparatus, electric apparatus, and energy storage apparatus

Abstract

The present application provides a battery connection assembly, a battery apparatus, an electric apparatus, and an energy storage apparatus. The battery apparatus comprises a battery cell assembly and a battery connection assembly, wherein the battery cell assembly comprises a battery cell provided with an electrode terminal; and the battery connection assembly comprises a sampling module, an insulating component, and a first busbar, wherein the sampling module is fixed to the insulating component and is connected to the first busbar, and the first busbar is detachably connected to the insulating component and connected to the electrode terminal. In the described structure, a first busbar being detachably connected to an insulating component allows for maintenance to be performed by replacing the first busbar upon the first busbar becoming damaged, eliminating the need to scrap the entire battery connection assembly. This reduces the likelihood that entire battery connection assemblies are scrapped, and helps reduce costs of battery apparatuses.

Description

Battery connection components, battery devices, electrical devices and energy storage devices Technical Field

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

[0002] Battery devices have advantages such as high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships and power tools.

[0003] As battery devices are used more and more in production and daily life, cost control of battery devices is receiving increasing attention, and how to reduce the cost of battery devices is becoming increasingly important to those skilled in the art.

[0004] Summary of the Invention

[0005] In view of the above problems, this application provides a battery connection assembly, a battery device, an electrical device, and an energy storage device, the battery device having a low cost.

[0006] In a first aspect, some embodiments of this application provide a battery device, which includes a battery cell assembly and a battery connection assembly. The battery cell assembly includes a battery cell having electrode terminals. The battery connection assembly includes a sampling component, an isolator, and a first busbar. The sampling component is fixed to the isolator and connected to the first busbar. The first busbar is detachably connected to the isolator and connected to the electrode terminals.

[0007] In the above structure, since the first busbar is detachably connected to the isolator, if the first busbar is damaged, it can be repaired by replacing the first busbar, without having to scrap the entire battery connection assembly. This reduces the possibility of scrapping the entire battery connection assembly and helps to reduce the cost of the battery device.

[0008] According to some embodiments of the battery device provided in this application, the battery connection assembly further includes a detachable rivet. The separator has a first connecting hole, and the first busbar has a second connecting hole. The detachable rivet passes through the first and second connecting holes to connect the first busbar and the separator. By passing the detachable rivet through the first and second connecting holes, not only can the first busbar and the separator be securely connected together by riveting, but the first busbar can also be easily removed from the separator by disassembling the detachable rivet, making the disassembly of the first busbar convenient.

[0009] According to some embodiments of the battery device provided in this application, the detachable rivet includes a plastic rivet. The plastic rivet can be installed without the need for installation tools; after pressing a finger into the mounting hole, its own elasticity allows it to expand and securely fasten the first busbar and the isolator. Furthermore, the plastic rivet can be easily deformed and removed by an operator.

[0010] According to some embodiments of the battery device provided in this application, the separator is provided with a first buckle, and the first busbar is provided with a first through hole extending along its own thickness direction. The first buckle passes through the first through hole, and at least a portion of the first buckle extends out of the first through hole and engages with the first busbar. By allowing the first buckle to pass through the first through hole and at least a portion of the first buckle to extend out of the first through hole and engage with the first busbar, the separator and the first busbar are detachably connected.

[0011] According to some embodiments of the present application, the battery device includes a main body and a connecting part that are interconnected. A sampling component is connected to the main body, and a first busbar is connected to the connecting part. The main body can protect and support the sampling component, and the connecting part can support and fix the first busbar, so that the first busbar is connected to the isolation component and together with the isolation component, they form an integral structure of the battery connection assembly, which facilitates the installation of the battery connection assembly as a whole structure.

[0012] According to some embodiments of the battery device provided in this application, the main body is provided with a receiving groove, in which at least a portion of the sampling component is located. The receiving groove is used to accommodate the sampling component, thereby enabling the sampling component to be better protected and secured.

[0013] According to some embodiments of the battery device provided in this application, the battery connection assembly further includes a connector, through which the sampling component is fixed to the isolator. The connector connects the sampling component to the isolator, thereby ensuring a secure fixation between the sampling component and the isolator.

[0014] According to some embodiments of the present application, the battery device includes a sampling assembly comprising an interconnected sampling harness and an adapter. The sampling harness is fixed to an isolation component and welded to a first busbar, which helps to improve the stability of the connection between the sampling harness and other harnesses or electronic devices.

[0015] According to some embodiments of the battery device provided in this application, the battery cell assembly includes a plurality of battery cells stacked along a first direction. The battery connection assembly further includes a plurality of second busbars connected to a separator. The plurality of second busbars are arranged along the first direction, and a first busbar is disposed on one side of the plurality of second busbars in the first direction. The first busbar is connected to a battery cell located at the end of the battery cell assembly, and the thickness of the second busbar is greater than the thickness of the first busbar. By setting the thickness of the second busbar to be greater than the thickness of the first busbar, the structural strength of the second busbar is greater than that of the first busbar, enabling the second busbar to better withstand the expansion force of the battery cell.

[0016] According to some embodiments of the battery device provided in this application, the second busbar has an arched structure that arches along a direction intersecting the first direction. By providing an arched structure that arches along a direction intersecting the first direction on the second busbar, the arched structure can stretch and deform to provide cushioning for the second busbar when the second busbar is subjected to a force in the first direction.

[0017] According to some embodiments of the battery device provided in this application, a second busbar is detachably connected to an isolator. This detachable connection allows the second busbar to be removed from the isolator, facilitating the replacement of the first busbar. This reduces the need for scrapping battery connection components and thus lowers the maintenance costs of the battery device.

[0018] According to some embodiments of the present application, the battery device is provided with a second buckle and a second busbar is provided with a second through hole extending along its own thickness direction. The second buckle passes through the second through hole, and at least part of the second buckle extends out of the second through hole and engages with the second busbar, so that the separator and the second busbar are detachably connected.

[0019] According to some embodiments of the present application, the battery device further includes an adapter. At least two battery cell assemblies are provided, and the at least two battery cell assemblies are arranged along a second direction. Each battery cell assembly is provided with a battery connection assembly on one side of a third direction. The first busbars of two adjacent battery connection assemblies are connected through the adapter. The third direction, the second direction, and the first direction are perpendicular to each other, so that the devices in the battery device can make full use of the space in the battery device housing, which is beneficial to improving space utilization.

[0020] According to some embodiments of the present application, the battery device is provided with a positioning post, the first busbar is provided with a first positioning hole, and the adapter is provided with a second positioning hole. The second positioning hole and the first positioning hole are correspondingly arranged along a third direction. The positioning post passes through the second positioning hole and the first positioning hole, so that the positioning post can position the first busbar and the adapter to each other, reduce the mutual misalignment between the two, and help improve the stability of the connection between the first busbar and the adapter.

[0021] According to some embodiments of the present application, the sampling component includes a circuit board, which is fixed to an isolator and connected to an electrode terminal through a first busbar, thereby realizing the electrical connection between the circuit board and the electrode terminal.

[0022] According to some embodiments of this application, the battery device includes a housing that houses a battery cell assembly and a battery connection assembly, and is capable of protecting the battery cell assembly and the battery connection assembly.

[0023] Secondly, some embodiments of this application provide a battery connection assembly, which includes an isolator, a sampling assembly, and a first busbar. The sampling assembly is fixed to the isolator, and the first busbar is detachably connected to the isolator and connected to the sampling assembly. The first busbar is used to connect to the electrode terminals of a battery cell.

[0024] Thirdly, some embodiments of this application provide an electrical device that includes a battery device provided by any of the above-described technical solutions, the battery device being used to provide electrical energy.

[0025] Fourthly, some embodiments of this application provide an energy storage device, which includes a housing and a battery device provided by any of the above-described technical solutions. The housing houses the battery device, and the battery device is used to store electrical energy.

[0026] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0027] This application provides a battery device including a battery cell assembly and a battery connection assembly. The battery cell assembly includes battery cells with electrode terminals. The battery connection assembly includes a sampling component, an isolator, and a first busbar. The sampling component is fixed to the isolator and connected to the first busbar, and the first busbar is detachably connected to the isolator and connected to the electrode terminals. In this structure, because the first busbar is detachably connected to the isolator, if the first busbar is damaged, it can be repaired by replacing the first busbar, without having to scrap the entire battery connection assembly. This reduces the possibility of scrapping the entire battery connection assembly and helps to reduce the cost of the battery device. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0029] Figure 1 is a schematic diagram of the vehicle structure provided in some embodiments of this application;

[0030] Figure 2 is a schematic diagram of the disassembled structure of a battery device provided in some embodiments of this application;

[0031] Figure 3 is a schematic diagram of the disassembled structure of a battery device provided in some other embodiments of this application;

[0032] Figure 4 is a front view of a battery connection assembly provided in some embodiments of this application;

[0033] Figure 5 is a left view of a battery connection assembly provided in some embodiments of this application;

[0034] Figure 6 is a schematic diagram of the structure of the first busbar of the battery connection assembly provided in some embodiments of this application;

[0035] Figure 7 is an enlarged view of point B in Figure 5 in some embodiments of this application;

[0036] Figure 8 is an enlarged view of point B in Figure 5 in some other embodiments of this application;

[0037] Figure 9 is an enlarged view of point A in Figure 4 in some embodiments of this application.

[0038] In the diagram: 1. Vehicle; 2. Battery unit; 3. Controller; 4. Motor; 5. Housing; 5a. First housing section; 5b. Second housing section; 5c. Receiving space; 6. Compartment; 7. Battery cell; 8. Battery cell assembly; 9. Battery connection assembly; 91. Sampling assembly; 911. Sampling harness; 912. Adapter; 92. Isolator; 921. Main body; 9211. Receiving slot; 922. Connecting part; 9221. First 9222, First buckle; 9223, Second buckle; 9224, Positioning post; 93, First busbar; 931, Second connecting hole; 932, First through hole; 933, First positioning hole; 94, Detachable rivet; 95, Connector; 96, Second busbar; 961, Arch structure; 962, Second through hole; 10, Adapter; 101, Second positioning hole; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0039] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0040] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0041] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, people are paying increasing attention to cost control.

[0046] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0047] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0048] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0049] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0050] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0051] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0052] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0053] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0054] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0055] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0056] The Cell Connection System (CCS) in a battery device mainly consists of signal acquisition components (such as flexible circuit boards and flexible flat cables), plastic structural components, and copper-aluminum busbars. The signal acquisition components, connected to the copper-aluminum busbars and plastic structural components, form the structural components for electrical connection and signal detection, enabling functions such as high-voltage series and parallel connection of individual battery cells, temperature acquisition, voltage acquisition, and overcurrent protection.

[0057] Currently, battery connection assemblies in battery devices are typically electrically connected to the electrode terminals of individual battery cells via busbars. However, due to their thinness, these busbars are prone to cracking or creases during transport. Furthermore, in existing technologies, the busbars and the separators in the battery connection assembly are usually fixed using thermal riveting, making disassembly difficult. This often necessitates the scrapping of the entire battery connection assembly for replacement. This significantly increases the production and maintenance costs of the battery device, hindering cost reduction.

[0058] To reduce the cost of battery devices, some embodiments of this application provide a battery device including a battery cell assembly and a battery connection assembly. The battery cell assembly includes battery cells with electrode terminals; the battery connection assembly includes a sampling component, an isolator, and a first busbar. The sampling component is fixed to the isolator and connected to the first busbar, and the first busbar is detachably connected to the isolator and connected to the electrode terminals. In the above structure, because the first busbar is detachably connected to the isolator, if the first busbar is damaged, it can be repaired by replacing the first busbar, reducing the possibility of scrapping the entire battery connection assembly and thus helping to reduce the cost of the battery device.

[0059] The battery connection component in the battery device described in this application can serve as a sampling component for collecting the operating status information of individual battery cells, or as a battery management component for intelligent management and maintenance of multiple battery cells. This battery connection component can be used, but is not limited to, in battery devices; it can also be used for information sampling in products such as vehicles, aircraft, ships, electronic devices, and power tools.

[0060] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, among others. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0061] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0062] Figure 1 is a schematic diagram of the structure of a vehicle provided in some embodiments of this application.

[0063] As shown in Figure 1, a battery device 2 is installed inside the vehicle 1. The battery device 2 can be located at the bottom, front, or rear 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 the operating power source for the vehicle 1.

[0064] The vehicle 1 may also 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, for the power needs of the vehicle 1 during starting, navigation and driving.

[0065] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0066] Figure 2 is a schematic diagram showing the disassembled structure of a battery device provided in some embodiments of this application. As shown in Figure 2, the battery device 2 includes a housing 5 and battery cells 7, with the battery cells 7 housed within the housing 5. The battery cell 7 can be the smallest unit that makes up a battery.

[0067] The housing 5 is used to house the battery cell 7, and the housing 5 can have various structures. In some embodiments, the housing 5 may include a first housing portion 5a and a second housing portion 5b, which overlap each other, and together define a housing space 5c for housing the battery cell 7. The second housing portion 5b may be a hollow structure with one end open, and the first housing portion 5a may be a plate-like structure, with the first housing portion 5a covering the open side of the second housing portion 5b to form a housing 5 with the housing space 5c; alternatively, both the first housing portion 5a and the second housing portion 5b may be hollow structures with one side open, with the open side of the first housing portion 5a covering the open side of the second housing portion 5b to form a housing 5 with the housing space 5c. Of course, the first housing portion 5a and the second housing portion 5b can be various shapes, such as cylinders, cuboids, etc.

[0068] To improve the sealing performance after the first housing part 5a and the second housing part 5b are connected, a sealing element, such as sealant or sealing ring, can also be provided between the first housing part 5a and the second housing part 5b.

[0069] Assuming that the first box section 5a covers the top of the second box section 5b, the first box section 5a can also be called the upper box cover, and the second box section 5b can also be called the lower box.

[0070] In the battery device 2, there can be one or more battery cells 7. If there are multiple battery cells 7, they can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells 7 are connected in both series and parallel. Multiple battery cells 7 can be directly connected in series, in parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 7 is housed in the housing 5. Alternatively, multiple battery cells 7 can first be connected in series, in parallel, or in a mixed manner to form a battery cell assembly, and then the multiple battery cell assemblies can be connected in series, in parallel, or in a mixed manner to form a whole assembly, which is then housed in the housing 5.

[0071] The battery cell 7 can be a cylindrical battery cell, a square battery cell, or a battery cell of other shapes.

[0072] Some embodiments of this application provide a battery device 2. Referring to FIG3, the battery device 2 includes a battery cell assembly 8 and a battery connection assembly 9. The battery cell assembly 8 includes a battery cell 7 having electrode terminals. Referring to FIG4 and FIG5, the battery connection assembly 9 includes a sampling component 91, an isolator 92 and a first busbar 93. The sampling component 91 is fixed to the isolator 92 and connected to the first busbar 93. The first busbar 93 is detachably connected to the isolator 92 and connected to the electrode terminals.

[0073] The battery cell 7 can be the smallest unit of the battery device 2 capable of charging and discharging, and the electrode terminals provided on it can be terminals for electrical connection to external devices. The battery connection assembly 9 can be a component used to realize the series and parallel connection of battery cells 7 in the battery cell assembly 8 and to perform functions such as temperature sampling and voltage sampling of battery cells 7.

[0074] The sampling component 91 can be a component used to electrically connect with the electrode terminals of the battery cell 7 to transmit signals such as temperature and voltage of the battery cell 7 to the outside. For example, the sampling component 91 may include a sampling harness 911, which transmits signals such as temperature and voltage of the battery cell 7 to the outside through electrical connection with the electrode terminals; it may also include a circuit board, which transmits signals such as temperature and voltage of the battery cell 7 to the outside through electrical connection with the electrode terminals.

[0075] The isolator 92 can be a component used to insulate the sampling assembly 91 from the battery cell 7, which can reduce the influence of the battery cell 7 on the transmitted signal in the sampling assembly 91. By disposing at least a portion of the isolator 92 between the sampling assembly 91 and the battery cell 7, the sampling assembly 91 can be protected by the isolator 92.

[0076] The sampling component 91 is fixed to the isolation component 92. This can mean that the sampling component 91 is connected to the isolation component 92 by connecting bolts, cable ties, or other connecting parts 95, or it can mean that the sampling component 91 is bonded to the isolation component 92 by adhesive. This can ensure that the sampling component 91 is well fixed, which is beneficial to improving the overall structural integrity of the battery connection component 9.

[0077] The first busbar 93 can be a component for connecting the electrode terminals to the sampling assembly 91, which can improve the stability of the connection between the sampling assembly 91 and the electrode terminals. Exemplarily, the first busbar 93 can be configured as a sheet structure, and the first busbar 93 can be connected to the electrode terminals more stably through a larger side, and the two are not easily separated.

[0078] The first busbar 93 is detachably connected to the isolator 92, allowing it to be easily removed and replaced. Because the first busbar 93 is relatively thin, it is prone to cracking or creases during the transportation or assembly of the battery connection assembly 9. Replacing the first busbar 93 reduces the scrapping of the battery connection assembly 9, minimizing unnecessary component waste and thus reducing production losses and lowering the production cost of the battery device 2. Furthermore, if the first busbar 93 is damaged by impact during transportation of the battery device 2, it can be repaired by replacement, again reducing the scrapping of the battery connection assembly 9 and minimizing unnecessary component waste, thereby lowering the maintenance cost of the battery device 2.

[0079] In the above structure, since the first busbar 93 is detachably connected to the isolator 92, the first busbar 93 can be repaired by replacing the first busbar 93 after it is damaged, without having to scrap the entire battery connection assembly 9. This reduces the possibility of scrapping the entire battery connection assembly 9 and helps to reduce the cost of the battery device 2.

[0080] In some embodiments, referring to Figures 6 and 7, the battery connection assembly 9 further includes a removable rivet 94, the separator 92 is provided with a first connection hole 9221, the first busbar 93 is provided with a second connection hole 931, and the removable rivet 94 passes through the first connection hole 9221 and the second connection hole 931 to connect the first busbar 93 and the separator 92.

[0081] The detachable rivet 94 refers to a rivet that can be easily removed after riveting. The first connecting hole 9221 refers to a hole-like structure that penetrates along the thickness direction of the spacer 92, and the second connecting hole 931 refers to a hole-like structure that penetrates along the thickness direction of the first busbar 93. By passing the detachable rivet 94 through the first connecting hole 9221 and the second connecting hole 931, not only can the first busbar 93 and the spacer 92 be firmly connected together by riveting, but the first busbar 93 can also be easily removed from the spacer 92 by removing the detachable rivet, making the removal of the first busbar 93 convenient.

[0082] For example, the first connecting hole 9221 can be formed by removing material from the separator 92 through drilling; or it can be manufactured simultaneously with the separator 92 by injection molding or other integral molding methods.

[0083] In some embodiments, the detachable rivet 94 includes a plastic rivet.

[0084] Plastic rivets can be made of plastic. They are typically made of nylon, which has good elasticity and memory properties. Installation does not require tools; simply press a finger into the mounting hole, and the rivet's elasticity allows it to expand and securely fasten the first manifold 93 and the separator 92. Furthermore, plastic rivets can be easily deformed and removed by an operator.

[0085] In some embodiments, referring to FIG8, the isolation member 92 is provided with a first buckle 9222, and the first busbar 93 is provided with a first through hole 932 extending along its own thickness direction. The first buckle 9222 passes through the first through hole 932, and at least a portion of the first buckle 9222 extends out of the first through hole 932 and engages with the first busbar 93.

[0086] The first latch 9222 can be a latch structure that protrudes from the isolator 92 toward the first busbar 93. The first through hole 932 can be a hole-like structure that extends along the thickness direction of the first busbar 93, and is used to pass through the first latch 9222. The first latch 9222 is elastic, and the first latch 9222 passes through the first through hole 932 and at least part of the first latch 9222 extends out of the first through hole 932 to engage with the first busbar 93, so that the isolator 92 and the first busbar 93 are detachably connected.

[0087] During assembly, the first snap fastener 9222 can be deformed to at least partially insert into the first through hole 932 and extend out of the first through hole 932, and under the action of elastic restoring force, it is locked onto the first busbar 93 and is not easy to disengage from the first through hole 932, so that the first snap fastener 9222 and the first busbar 93 are engaged; during disassembly, the first snap fastener 9222 is deformed under the action of the operator, the first snap fastener 9222 extending out of the first through hole 932 retracts into the first through hole 932 and disengages from the first through hole 932, so that the first busbar 93 can be removed from the isolation member 92.

[0088] For example, the first buckle 9222 can be manufactured simultaneously with the spacer 92 by means of injection molding or other integral molding, so that the overall structure formed by the first buckle 9222 and the spacer 92 has good structural strength.

[0089] In some embodiments, the isolation member 92 includes a main body portion 921 and a connecting portion 922 connected to each other, the sampling component 91 is connected to the main body portion 921, and the first busbar 93 is connected to the connecting portion 922.

[0090] The main body 921 and the connecting part 922 are two different parts of the isolator 92, which are connected to each other to form the overall structure of the isolator 92. The main body 921 can be a structure for fixing the sampling component 91, which can protect and support the sampling component 91. The connecting part 922 can be a structure for connecting the first busbar 93, which can support and fix the first busbar 93, so that the first busbar 93 is connected to the isolator 92, and together with the isolator 92, they form the overall structure of the battery connection assembly 9, which facilitates the installation of the battery connection assembly 9 as a whole structure.

[0091] For example, the first buckle 9222 and the first connecting hole 9221 in the above technical solution are both provided on the connecting part 922, so that the connecting part 922 can be connected to the first busbar 93.

[0092] In some embodiments, the main body 921 and the connecting part 922 are integrally formed. The main body 921 and the connecting part 922 can be manufactured by integral molding methods such as injection molding, so that the isolation member 92 can be manufactured as a whole and simultaneously. This not only makes the processing and manufacturing of the isolation member 92 convenient, but also gives the overall structure of the isolation member 92 good strength.

[0093] In some embodiments, the main body 921 is provided with a receiving groove 9211, in which at least a portion of the sampling component 91 is located.

[0094] The receiving groove 9211 can be a groove-shaped structure provided in the main body 921, which is used to receive the sampling component 91, so that the sampling component 91 can be better protected and fixed.

[0095] For example, the opening of the receiving groove 9211 is oriented away from the battery cell 7, so that the sampling component 91 can be easily connected to the side of the separator 92 away from the battery cell 7, which helps to reduce the impact of the battery cell 7 on the sampling component 91.

[0096] In some embodiments, the battery connection assembly 9 further includes a connector 95, through which the sampling assembly 91 is fixed to the isolator 92.

[0097] The connector 95 may be a device for connecting the sampling component 91 to the isolator 92 to securely fix the sampling component 91 to the isolator 92. Exemplarily, the connector 95 may include cable ties, by which the sampling component 91 is secured to the isolator 92; the connector 95 may also include connecting bolts, by which the sampling component 91 is fastened to the isolator 92.

[0098] In some embodiments, the sampling assembly 91 includes a sampling harness 911 and an adapter 912 connected to each other, the sampling harness 911 is fixed to the isolator 92, and the sampling harness 911 is soldered to the first bus 93.

[0099] The sampling harness 911 can be a harness structure in the sampling component 91 that is electrically connected to the electrode terminals. The adapter 912 can be an interface in the sampling component 91 that is connected to the sampling harness 911. It is used to connect the sampling harness 911 to other harnesses or electronic devices, which helps to improve the stability of the connection between the sampling harness 911 and other harnesses or electronic devices.

[0100] The welding of the sampling harness 911 to the first busbar 93 can mean that the wires of the sampling harness 911 are connected to the first busbar 93 by a conductive welding method such as soldering. Since welding can melt the materials together, it not only makes the connection between the sampling harness 911 and the first busbar 93 firm, but also helps to reduce the resistance value of the connection between the sampling harness 911 and the first busbar 93.

[0101] In some embodiments, the battery cell assembly 8 includes a plurality of battery cells 7 stacked along a first direction X, and the battery connection assembly 9 further includes a plurality of second busbars 96 connected to the separator 92. The plurality of second busbars 96 are arranged along the first direction X, and a first busbar 93 is disposed on one side of the plurality of second busbars 96 in the first direction X. The first busbar 93 is connected to the battery cell 7 located at the end of the battery cell assembly 8, and the thickness of the second busbar 96 is greater than the thickness of the first busbar 93.

[0102] Multiple battery cells 7 in the battery cell assembly 8 are stacked along the first direction X, so that the battery cell assembly 8 can form a module structure with a larger capacity.

[0103] The second busbar 96 can be a component used to connect the electrode terminals to the sampling assembly 91, which can improve the stability of the connection between the sampling assembly 91 and the electrode terminals. By providing multiple second busbars 96 and arranging them along the first direction X, the sampling assembly 91 can be electrically connected to multiple battery cells 7 through the multiple second busbars 96, enabling the sampling assembly 91 to successfully collect signals such as temperature and voltage from the multiple battery cells 7.

[0104] For example, the second busbar 96 can be configured as a sheet structure, and the second busbar 96 can be connected to the electrode terminal more stably through a larger side, and the two are not easily disconnected.

[0105] By placing the first busbar on one side of the plurality of second busbars 96 in the first direction X, the first busbar 93 is located in the end region of the separator 92 in the first direction X, which corresponds to the battery cell 7 at the end of the battery cell assembly 8 in the first direction X.

[0106] For example, the first busbars 93 are arranged in pairs, and the two first busbars 93 in each pair are arranged at a distance from each other along the first direction X. A plurality of second busbars 96 are arranged between the two first busbars 93 along the first direction X. The first busbars 93 are connected to the battery cell 7 at the end of the battery cell assembly 8 in the first direction X, and the second busbars 96 are connected to the battery cell 7 in the middle of the battery cell assembly 8.

[0107] Because the battery cells 7 in the battery cell assembly 8 will expand and deform during use, the battery cells 7 in the middle of the battery cell assembly 8 will exert a force on the second busbar 96. By setting the thickness of the second busbar 96 to be greater than the thickness of the first busbar 93, the structural strength of the second busbar 96 is greater than that of the first busbar 93, so that the second busbar 96 can better withstand the expansion force of the battery cells 7.

[0108] Since the thickness of the first busbar 93 is less than that of the second busbar 96, the first busbar 93 requires less material, resulting in a lower cost and thus reducing the cost of the battery device 2.

[0109] In some embodiments, the second busbar 96 is provided with an arched structure 961, which arches along a direction intersecting the first direction X.

[0110] The arched structure 961 can be a structure formed by bending on the second busbar 96, which can provide a buffer for the deformation of the second busbar 96. By providing an arched structure 961 that arches along the direction intersecting the first direction X on the second busbar 96, the arched structure 961 can provide a buffer for the second busbar 96 by stretching and deforming when the second busbar 96 is subjected to a force in the first direction X.

[0111] In some embodiments, the second busbar 96 is detachably connected to the isolator 92.

[0112] The second busbar 96 is detachably connected to the isolator 92, allowing the second busbar 96 to be removed from the isolator 92, which facilitates the replacement of the first busbar 93. This reduces the scrapping of the battery connection assembly 9 and thus lowers the maintenance cost of the battery device 2.

[0113] In some embodiments, the isolation member 92 is provided with a second buckle 9223, and the second busbar 96 is provided with a second through hole 962 extending along its own thickness direction. The second buckle 9223 passes through the second through hole 962, and at least a portion of the second buckle 9223 extends out of the second through hole 962 and engages with the second busbar 96.

[0114] The second latch 9223 may be a latch structure that protrudes from the isolator 92 toward the second busbar 96. The second through hole 962 may be a hole-like structure that extends along the thickness direction of the second busbar 96, for the second latch 9223 to pass through. The second latch 9223 is elastic, and the second latch 9223 passes through the second through hole 962 and at least part of the second latch 9223 extends out of the second through hole 962 to engage with the second busbar 96, so that the isolator 92 and the second busbar 96 are detachably connected.

[0115] During assembly, the second snap fastener 9223 can deform to at least partially insert into and protrude from the second through hole 962, and under the action of elastic restoring force, it is locked onto the second busbar 96 and is not easily dislodged from the second through hole 962, so that the second snap fastener 9223 is engaged with the second busbar 96; during disassembly, the second snap fastener 9223 is deformed under the action of the operator, the second snap fastener 9223 protruding from the second through hole 962 retracts into the second through hole 962 and dislodged from the second through hole 962, so that the second busbar 96 can be removed from the isolator 92.

[0116] For example, the second buckle 9223 can be manufactured simultaneously with the spacer 92 by means of injection molding or other integral molding, so that the overall structure formed by the second buckle 9223 and the spacer 92 has good structural strength.

[0117] In some embodiments, referring to FIG9, the battery device 2 further includes an adapter 10, at least two battery cell assemblies 8 are provided, the at least two battery cell assemblies 8 are arranged along the second direction Y, each battery cell assembly 8 is provided with a battery connection assembly 9 on the third direction Z side, and the first busbar 93 of two adjacent battery connection assemblies 9 are connected through the adapter 10.

[0118] By including at least two battery cell assemblies 8, the battery device 2 can have a larger capacity. Each battery cell assembly 8 has a corresponding battery connection assembly 9 on the third direction Z side, so that the battery cells 7 in each battery cell assembly 8 can have their temperature, voltage, and other signals collected by the battery connection assembly 9.

[0119] By arranging at least two battery cell assemblies 8 along the second direction Y, and placing the battery connection assembly 9 on the side of the battery cell assembly 8 in the third direction Z, with the third direction Z, the second direction Y, and the first direction X being perpendicular to each other, the devices in the battery device 2 can make full use of the space in the battery device 2 housing 5, which is beneficial to improving space utilization.

[0120] The adapter 10 can be a device for connecting two adjacent battery connection assemblies 9. By connecting the first busbars 93 of the two adjacent battery connection assemblies 9, the adapter 10 can electrically connect the battery cells 7 in the battery cell assembly 8 connected by the two adjacent battery connection assemblies 9, so as to realize the series connection, parallel connection or mixed connection of the battery cells 7 in the two battery cell assemblies 8. Mixed connection means that multiple battery cells 7 are connected in both series and parallel.

[0121] In some embodiments, the isolation member 92 is provided with a positioning post 9224, the first busbar 93 is provided with a first positioning hole 933, and the adapter 10 is provided with a second positioning hole 101. The second positioning hole 101 and the first positioning hole 933 are respectively arranged along the third direction Z, and the positioning post 9224 passes through the second positioning hole 101 and the first positioning hole 933.

[0122] The positioning post 9224 can be a structure provided on the isolator 92 for positioning the first busbar 93 and the adapter 10 to each other. The first positioning hole 933 can be a hole-like structure provided on the first busbar 93 that penetrates along the third direction Z, and the second positioning hole 101 can be a hole-like structure provided on the adapter 10 that penetrates along the third direction Z. By arranging the second positioning hole 101 and the first positioning hole 933 correspondingly along the third direction Z, and by having the positioning post 9224 pass through the second positioning hole 101 and the first positioning hole 933, the positioning post 9224 can position the first busbar 93 and the adapter 10 to each other, reducing mutual misalignment between the two and improving the stability of the connection between the first busbar 93 and the adapter 10.

[0123] In some embodiments, the sampling component 91 includes a circuit board, which is fixed to the isolator 92 and connected to the electrode terminals via a first bus 93.

[0124] The circuit board is connected to the electrode terminals via the first busbar 93. This means that the circuits in the circuit board are connected to the first busbar 93, and the first busbar 93 is connected to the electrode terminals, so that the circuit board is electrically connected to the electrode terminals via the first busbar 93.

[0125] The circuit board being fixed to the isolation component 92 can mean that the circuit board is connected to the isolation component 92 by connecting bolts, connecting pins, or other connecting components 95.

[0126] For example, the circuit board can be a printed circuit board or a flexible circuit board, and those skilled in the art can choose the form of the circuit board according to the actual situation.

[0127] In some embodiments, the battery device 2 includes a housing 5 that houses a battery cell assembly 8 and a battery connection assembly 9.

[0128] The housing 5 can be the external wall structure of the battery device 2, forming a receiving space 5c. The battery cell assembly 8 and the battery connection assembly 9 are disposed in the receiving space 5c and are protected by the housing 5.

[0129] Some embodiments of this application provide a battery connection assembly 9, which includes an isolator 92, a sampling assembly 91, and a first busbar 93. The sampling assembly 91 is fixed to the isolator 92; the first busbar 93 is detachably connected to the isolator 92 and connected to the sampling assembly 91, and the first busbar 93 is used to connect to the electrode terminals of the battery cell 7.

[0130] As described above, the first busbar 93 is detachably connected to the isolation member 92, so that if the first busbar 93 is damaged, it can be repaired by replacing the first busbar 93, without having to scrap the entire battery connection assembly 9, which reduces the possibility of scrapping the entire battery connection assembly 9 and helps to reduce the cost of the battery device 2.

[0131] Some embodiments of this application also provide an electrical device, which includes the battery device 2 provided by the above-described technical solution, and the battery device 2 is used to provide electrical energy.

[0132] Since the power device includes the battery device 2 provided by the above-described technical solution, the power device has a lower cost.

[0133] Some embodiments of this application also provide an energy storage device, which includes a housing 6 and a battery device 2 as provided in the foregoing technical solutions. The housing 6 houses the battery device 2, which is used to store electrical energy.

[0134] Since the energy storage device includes the battery device 2 provided by the above-mentioned technical solution, the energy storage device has a lower cost.

[0135] Some embodiments of this application provide a battery device 2, which includes a housing 5, a battery cell assembly 8, a battery connection assembly 9, and an adapter 10. The battery cell assembly 8, the battery connection assembly 9, and the adapter 10 are all housed in the housing 5. At least two battery cell assemblies 8 are provided along a second direction Y, and a battery connection assembly 9 is provided on one side of the third direction Z of each battery cell assembly 8. The battery cell assembly 8 includes a plurality of battery cells 7 stacked along a first direction X. The battery connection assembly 9 includes a sampling component 91, an isolator 92, a first busbar 93, and a second busbar 96. The first busbars 93 are arranged in pairs, and a plurality of second busbars 96 are arranged along the first direction X between the two pairs of first busbars 93. The sampling component 91 is fixed to the isolator 92 and connected to the first busbar 93 and the second busbar 96. The first busbar 93 and the second busbar 96 are detachably connected to the isolator 92 and connected to the electrode terminals.

[0136] In the above structure, since the first busbar 93 is detachably connected to the isolator 92, the first busbar 93 can be repaired by replacing the first busbar 93 after it is damaged, without having to scrap the entire battery connection assembly 9. This reduces the possibility of scrapping the entire battery connection assembly 9 and helps to reduce the cost of the battery device 2.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, comprising: Battery cell assembly, including battery cells with electrode terminals; A battery connection assembly includes a sampling component, an isolator, and a first busbar, wherein the sampling component is fixed to the isolator and connected to the first busbar, and the first busbar is detachably connected to the isolator and connected to the electrode terminals.

2. The battery device according to claim 1, wherein, The battery connection assembly further includes a detachable rivet, the isolator has a first connection hole, the first busbar has a second connection hole, and the detachable rivet passes through the first connection hole and the second connection hole to connect the first busbar and the isolator.

3. The battery device according to claim 2, wherein, The detachable rivets include plastic rivets.

4. The battery device according to claim 1, wherein, The isolation component is provided with a first buckle, and the first busbar is provided with a first through hole extending along its own thickness direction. The first buckle passes through the first through hole, and at least part of the first buckle extends out of the first through hole and engages with the first busbar.

5. The battery device according to any one of claims 1-4, wherein, The isolation component includes a main body and a connecting part that are connected to each other. The sampling component is connected to the main body, and the first busbar is connected to the connecting part.

6. The battery device according to claim 5, wherein, The main body is provided with a receiving groove, and at least a portion of the sampling components are located in the receiving groove.

7. The battery device according to any one of claims 1-6, wherein, The battery connection assembly further includes a connector, through which the sampling assembly is fixed to the isolator.

8. The battery device according to any one of claims 1-7, wherein, The sampling assembly includes interconnected sampling harnesses and adapters. The sampling harnesses are fixed to the isolator and welded to the first busbar.

9. The battery device according to any one of claims 1-8, wherein, The battery cell assembly includes a plurality of battery cells stacked along a first direction. The battery connection assembly also includes a plurality of second busbars connected to the separator. The plurality of second busbars are arranged along the first direction. The first busbar is disposed on one side of the plurality of second busbars in the first direction. The first busbar is connected to the battery cell located at the end of the battery cell assembly. The thickness of the second busbar is greater than the thickness of the first busbar.

10. The battery device according to claim 9, wherein, The second busbar has an arched structure, which arches out in a direction intersecting the first direction.

11. The battery device according to claim 9 or 10, wherein, The second busbar is detachably connected to the isolator.

12. The battery device according to any one of claims 9-11, wherein, The isolation component is provided with a second buckle, and the second busbar is provided with a second through hole extending along its own thickness direction. The second buckle passes through the second through hole, and at least part of the second buckle extends out of the second through hole and engages with the second busbar.

13. The battery device according to any one of claims 1-12, wherein, The battery device further includes an adapter. At least two battery cell assemblies are provided, and the at least two battery cell assemblies are arranged along the second direction. Each battery cell assembly is provided with a battery connection assembly on one side of the third direction. The first busbars of two adjacent battery connection assemblies are connected through the adapter. The third direction, the second direction, and the first direction are perpendicular to each other.

14. The battery device according to claim 13, wherein, The isolator is provided with a positioning post, the first busbar is provided with a first positioning hole, the adapter is provided with a second positioning hole, the second positioning hole and the first positioning hole are respectively arranged in the third direction, and the positioning post passes through the second positioning hole and the first positioning hole.

15. The battery device according to any one of claims 1-14, wherein, The sampling component includes a circuit board, which is fixed to the isolator and connected to the electrode terminal through the first busbar.

16. The battery device according to any one of claims 1-15, wherein, The battery device includes a housing that houses the individual battery cells and the battery connection assembly.

17. A battery connection assembly, comprising: Isolation components; The sampling component is fixed to the isolator. A first busbar is detachably connected to the isolator and to the sampling assembly, the first busbar being used to connect to the electrode terminals of a battery cell.

18. An electrical device comprising a battery device as described in any one of claims 1 to 16, the battery device being used to provide electrical energy.

19. An energy storage device, comprising: Warehouse body; The battery device according to any one of claims 1 to 16, wherein the housing contains the battery device, the battery device being used to store electrical energy.

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