Battery assembly, first connecting structure, battery and electric equipment

Abstract

The utility model provides a battery assembly, a first connecting structure, a battery and electric equipment. The battery assembly comprises a first battery module and a second battery module, the two CMCs are connected with the first battery module and the second battery module respectively, the first battery module comprises a first repeating unit, the first repeating unit comprises battery monomers arranged in the first direction, and the second battery module is located on one side, in the first direction, of the first battery module. The second battery module comprises second repeating units, each second repeating unit comprises battery monomers arranged in the first direction, and the terminal arrangement mode of the battery monomers in at least one second repeating unit and the terminal arrangement mode of the battery monomers in at least one first repeating unit are arranged in a mirroring mode relative to a reference line extending in the first direction; therefore, the two CMCs are connected with the first battery module and the second battery module in the same manner, so that the two CMCs which are positioned on the two sides of the battery assembly and are respectively connected with the first battery module and the second battery module can be commonly used, and the preparation cost of the battery is saved.

Description

Technical Field

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

[0002] As electric vehicle technology becomes increasingly sophisticated, electric vehicles are getting closer to people's lives. At the same time, electric vehicles have higher and higher performance requirements for the batteries that provide energy to them. At present, in order to increase the energy storage capacity of the battery, at least two battery cells are usually set in the battery. In order to monitor the operating status of each battery cell, the status signal of the battery cell is transmitted to the CMC (Cell Monitoring Circuit; Battery Monitoring Unit) through a circuit board or wiring harness for collection.

[0003] However, in the prior art, CMCs located at different positions of the box body cannot be used interchangeably, resulting in increased battery costs, which urgently needs improvement. Utility Model Content

[0004] In view of the above problems, the present application provides a battery assembly, a first connection structure, a battery and an electrical device, which can achieve the common use of CMCs located at different positions of a box, so as to reduce the CMC preparation cost and reduce the battery cost.

[0005] In a first aspect, the present application provides a battery assembly, comprising: a first battery module, comprising a first repeating unit, the first repeating unit comprising a plurality of battery cells arranged along a first direction; a second battery module, located on one side of the first battery module in the first direction, the second battery module comprising a second repeating unit, the second repeating unit comprising a plurality of battery cells arranged along the first direction; wherein the terminal arrangement of the battery cells in at least one second repeating unit is mirrored with respect to the terminal arrangement in at least one first repeating unit with respect to a reference line extending along the first direction.

[0006] In the scheme of the embodiment of the present application, the battery assembly includes a first battery module and a second battery module. When CMCs are respectively arranged on both sides of the first direction of the battery assembly, the two CMCs are respectively connected to the first battery module and the second battery module. The first battery module includes a first repeating unit, and the first repeating unit includes a plurality of battery cells arranged along the first direction. The second battery module is located on one side of the first battery module in the first direction. The second battery module includes a second repeating unit, and the second repeating unit includes a plurality of battery cells arranged along the first direction. The terminal arrangement mode of the battery cells in at least one second repeating unit is mirrored with the terminal arrangement mode in at least one first repeating unit about a reference line extending along the first direction, so that the connection form of the two CMCs and the first battery module and the second battery module is the same, so that the two CMCs located on both sides of the battery assembly, respectively, and the first battery module and the second battery module can be used in common, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0007] In some embodiments, a first repeating unit is disposed in the first battery module, a second repeating unit is disposed in the second battery module, and the terminal arrangement of the battery cells in the second repeating unit is mirrored with respect to the reference line as that of the terminals in the first repeating unit.

[0008] In the technical solution of the embodiment of the present application, a first repeating unit is arranged in the first battery module, and a second repeating unit is arranged in the second battery module. The terminal arrangement of the battery cells in the second repeating unit is mirrored with the terminal arrangement in the first repeating unit about a reference line, so that the CMC structures connected to the first battery module and the second battery module are the same, and the two CMCs are universal, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0009] In some embodiments, the first battery module includes a plurality of first repeating units arranged along the second direction, the second battery module includes a plurality of second repeating units arranged along the second direction, and the number of the first repeating units is the same as the number of the second repeating units, and the terminal arrangement of the battery cells of the nth first repeating unit in the positive direction of the second direction in the first battery module and the terminal arrangement of the battery cells of the nth second repeating unit in the negative direction of the second direction in the second battery module are mirrored about the reference line.

[0010] In the technical solution of the embodiment of the present application, the first battery module includes a plurality of first repeating units arranged along the second direction, the second battery module includes a plurality of second repeating units arranged along the second direction, and the number of the first repeating units is the same as the number of the second repeating units. By making the terminal arrangement mode of the battery cells of the nth first repeating unit in the positive direction of the second direction in the first battery module and the terminal arrangement mode of the battery cells of the nth second repeating unit in the negative direction of the second direction in the second battery module mirror-set about the reference line, so that the CMC structures connected to the first battery module and the second battery module are the same, the two CMCs are universal, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0011] In the second aspect, the present application provides a first connection structure for connecting to a battery assembly of an embodiment of the first aspect, the first connection structure comprising a first connector and a second connector arranged along a first direction, the first connector being connected to a first repeating unit, the second connector being connected to a second repeating unit, the first connector comprising a first segment and a second segment arranged along a positive direction of the second direction, the second connector comprising a first segment and a second segment arranged along a negative direction of the second direction, the first segment and the second segment both comprising a plurality of connection portions arranged along the second direction, the connection portions being connected to terminals, and in the first connector and the second connector connected to the first repeating unit and the second repeating unit which are arranged in a mirror image along a reference line with respect to the arrangement of the terminals, the connection portion arrangement mode of the first segment of the first connector is the same as the connection portion arrangement mode of the first segment of the second connector, and the connection portion arrangement mode of the second segment of the first connector is the same as the connection portion arrangement mode of the second segment of the second connector.

[0012] In the scheme of the embodiment of the present application, the first connection structure is connected to the battery assembly, the first connection structure includes a first connection member and a second connection member arranged along a first direction, the first connection member and the second connection member are respectively connected to the first repeating unit and the second repeating unit, the first connection member includes a first segment and a second segment arranged along a positive direction of the second direction, the second connection member includes a first segment and a second segment arranged along a negative direction of the second direction, the first segment and the second segment both include a plurality of connection parts arranged along the second direction, the connection parts are connected to the terminals, the terminals of the repeating units are connected to the CMC through the connection parts, and the arrangement of the terminals is about the mirror image along the reference line. For example, in the first connector and the second connector connecting the first repeating unit and the second repeating unit, the connection part arrangement mode of the first segment of the first connector is the same as the connection part arrangement mode of the first segment of the second connector, and the connection part arrangement mode of the second segment of the first connector is the same as the connection part arrangement mode of the second segment of the second connector, so that the structures of the first connector and the second connector are the same, and the structures of the two CMCs respectively connected to the first connector and the second connector are the same, so that the two CMCs respectively connected to the first battery module and the second battery module can be used interchangeably, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0013] In some embodiments, along the second direction, a bending section is provided between the first section and the second section, and the first section and the second section are bendably provided around the bending section.

[0014] In the technical solution of the embodiment of the present application, a bending section is arranged between the first segment and the second segment along the second direction, and the first segment and the second segment are bendable around the bending section. By folding the first segment and the second segment in the first connector and the second connector, the arrangement of the connecting parts in the first connector and the second connector is adjusted, so that two CMCs respectively connected to the first connector and the second connector can be used interchangeably, thereby reducing the preparation cost of the CMC and reducing the preparation cost of the battery.

[0015] In some embodiments, a dimension of the bending segment in the second direction is greater than or equal to 2 mm.

[0016] In the technical solution of the embodiment of the present application, the length of the bending section in the second direction is greater than or equal to 2 mm, so as to improve the problem that the spacing between the first segment and the second segment is too low due to the small size of the bending section, resulting in accidental contact between the first segment and the second segment, and causing failure of the first connection structure, thereby improving the reliability of the battery.

[0017] In some embodiments, a dimension of the bending segment in the first direction is smaller than a dimension of the first segment in the first direction.

[0018] In the technical solution of the embodiment of the present application, the size of the bending section in the first direction is smaller than the size of the first segment in the first direction, so that an avoidance space is formed on one side of the bending section in the first direction. The avoidance space can reduce the difficulty of connecting the first connector or the second connector and the CMC, reduce the probability of interference between the first connector or the second connector and the CMC, and improve the practicability of the first connector or the second connector.

[0019] In some embodiments, the first connector and the second connector both include a folded state, and the first connector and the second connector are configured so that in the folded state, the first segment and the second segment are stacked along a third direction, and the first direction, the second direction and the third direction intersect with each other, and the first connecting structure also includes a support member, and in the folded state, the support member abuts between the first segment and the second segment.

[0020] In the technical solution of the embodiment of the present application, when the first connecting member and the second connecting member are in a folded state, a support member is arranged between the first segment and the second segment, and the distance between the first segment and the second segment is limited by the support member to improve the problem of damage to the first connecting member or the second connecting member due to bending of the first connecting member or the second connecting member, thereby improving the service life of the first connecting structure.

[0021] In a third aspect, the present application provides a battery, comprising a battery assembly according to the first aspect embodiment and a first connection structure according to the second aspect embodiment, wherein a plurality of terminals are provided on the first repeating unit and the second repeating unit, and the terminals and the connection parts are electrically connected.

[0022] In the technical solution of the embodiment of the present application, the battery includes a battery assembly and a first connecting structure, the connecting part of the first connecting structure is electrically connected to the terminal on the battery assembly, so that the connecting parts located at the first connecting member and the second connecting member are arranged in the same manner, and the CMC is connected to the first connecting member or the second connecting member so that the two CMCs located on both sides of the battery assembly can be used interchangeably, thereby reducing the preparation cost of the CMC and saving the preparation cost of the battery.

[0023] In some embodiments, the battery also includes a second connecting structure connected to the first connecting structure, and the two second connecting structures are respectively arranged on both sides of the battery assembly in the first direction. A slot is arranged on the second connecting structure, and two sub-slots are arranged in the slot. The first segment and the second segment are respectively inserted into a sub-slot.

[0024] In the technical solution of the embodiment of the present application, the two second connecting structures are respectively arranged on both sides of the battery assembly in the first direction, and a slot is provided on the second connecting structure. Two sub-slots are provided in the slot, and the first segment and the second segment are respectively inserted into a sub-slot. The connection parts of the first connecting structure in the sub-slots corresponding to the two second connecting structures are arranged in the same way, so that the two second connecting structures can be used interchangeably and the preparation cost of the battery can be reduced.

[0025] In some embodiments, the first connector and the second connector both include a folded state, and the first connector and the second connector are configured such that in the folded state, the first segment and the second segment are stacked along a third direction, the first direction, the second direction and the third direction intersect each other, and two sub-slots located in the same slot are arranged along the third direction.

[0026] In the technical solution of the embodiment of the present application, two sub-slots in the same slot in the second connection structure are arranged along the third direction to match the first segment and the second segment stacked along the third direction, thereby improving the connection reliability of the first connection structure and the second connection structure.

[0027] In a fourth aspect, the present application provides an electrical device, comprising the battery of the above-mentioned third aspect embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 A schematic diagram of the structure of a vehicle provided in one embodiment of the present application;

[0030] Figure 2 An exploded schematic diagram of a battery provided in one embodiment of the present application;

[0031] Figure 3 A schematic diagram of the structure of a battery module in a battery provided in an embodiment of the present application;

[0032] Figure 4 An exploded view of a battery assembly provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application;

[0035] Figure 7A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0040] Fig.12 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0041] Fig.13 A schematic diagram of a portion of the structure of a battery provided in an embodiment of the present application;

[0042] Fig.14 A schematic structural diagram of a first connecting member or a second connecting member of a first connecting structure provided in an embodiment of the present application;

[0043] Fig.15 A front view of a first connecting member or a second connecting member of a first connecting structure provided in an embodiment of the present application;

[0044] Fig.16 An exploded view of a battery provided in an embodiment of the present application;

[0045] Fig.17 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0046] Fig.18 A schematic diagram of the structure of the plug-in portion of the battery provided in an embodiment of the present application.

[0047] Description of reference numerals:

[0048] 1. Vehicle; 2. Battery; 101. Motor; 102. Controller; 202. Box; 2021. First box portion; 2022. Second box portion; 3. Battery cell;

[0049] 4. Battery assembly; 41. First battery module; 42. Second battery module; 411. First repeating unit; 421. Second repeating unit; 43. Terminal; 44. Battery module;

[0050] 5. First connection structure; 51. First connection member; 52. Second connection member; 531. First segment; 532. Second segment; 54. Connection portion; 533. Bending segment; 55. Support member;

[0051] 6. Second connection structure; 61. Slot; 611. Sub-slot; 62. Plug-in portion. DETAILED DESCRIPTION

[0052] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0053] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0054] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0055] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0059] As electric vehicle technology continues to improve, electric vehicles are getting closer and closer to people's lives. At the same time, electric vehicles have higher and higher performance requirements for the batteries that provide energy to them. At present, in order to increase the energy storage capacity of the battery, at least two battery cells are usually provided in the battery. In order to monitor the operating status of each battery cell, the status signal of the battery cell is transmitted to the CMC (Cell Monitoring Circuit; battery monitoring unit) for collection through a circuit board or wiring harness. In different types of battery boxes, the CMC is located in different positions of the box, and the CMCs located in different positions of the box cannot be universal.

[0060] This is because the two CMCs are arranged on both sides of the battery assembly in the first direction, and each CMC is connected to a battery module respectively. In the two battery modules arranged along the first direction in the battery assembly, the arrangement of the terminals connected between the battery cells and the CMCs is different. In order to adapt to the different arrangements of the terminals, the connection structures of the CMCs on both sides of the battery assembly are also different, which makes the CMCs on both sides of the battery assembly incompatible with each other.

[0061] Based on the above problems, the present application provides a battery assembly, which includes a first battery module and a second battery module. When CMCs are respectively arranged on both sides of the first direction of the battery assembly, the two CMCs are respectively connected to the first battery module and the second battery module. The first battery module includes a first repeating unit, which includes a plurality of battery cells arranged along the first direction. The second battery module is located on one side of the first battery module in the first direction. The second battery module includes a second repeating unit, which includes a plurality of battery cells arranged along the first direction. The terminal arrangement of the battery cells in at least one second repeating unit is mirrored to the terminal arrangement in at least one first repeating unit with respect to a reference line extending along the first direction, so that the connection form of the two CMCs and the first battery module and the second battery module is the same, so that the two CMCs located on both sides of the battery assembly, respectively, and the first battery module and the second battery module can be used interchangeably, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0062] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0063] The battery mentioned in the embodiments of the present application refers to a single physical module including one or at least two battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or at least two battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0064] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0065] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0066] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1 provided for some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 2 is provided inside the vehicle 1, and the battery may be provided at the bottom, head or tail of the vehicle 1. Battery 2 may be used to power the vehicle 1, for example, battery 2 may be used as an operating power source for the vehicle 1. Vehicle 1 may also include a controller 102 and a motor 101, and the controller 102 is used to control the battery to power the motor 101, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0067] In some embodiments of the present application, the battery can be used not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0068] In order to meet different power requirements, the battery 2 may include at least two battery cells, and the battery cell refers to the smallest unit that constitutes a battery module or a battery pack. At least two battery cells can be connected in series and / or in parallel via electrode terminals for application in various applications. The battery 2 mentioned in the present application includes a battery module or a battery pack. Among them, at least two battery cells can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. In the embodiment of the present application, at least two battery cells can directly constitute a battery pack, or they can first constitute a battery module, and the battery module can then constitute a battery pack.

[0069] Figure 2 An exploded schematic diagram of a battery provided in accordance with an embodiment of the present application.

[0070] like Figure 2 As shown, the battery includes a battery case 202 and a battery cell (not shown), and the battery cell is accommodated in the battery case 202 .

[0071] The battery box 202 may be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres. The battery box 202 may be made of alloy materials such as aluminum alloy, iron alloy, polymer materials such as polycarbonate, polyisocyanurate foam plastic, or composite materials such as glass fiber and epoxy resin.

[0072] The battery case 202 is used to accommodate battery cells, and the battery case 202 can be of various structures. In some embodiments, the battery case 202 can include a first case portion 2021 and a second case portion 2022, the first case portion 2021 and the second case portion 2022 cover each other, and the first case portion 2021 and the second case portion 2022 jointly define a storage space for accommodating the battery cells 3. The second case portion 2022 can be a hollow structure with one end open, the first case portion 2021 is a plate-like structure, and the first case portion 2021 covers the open side of the second case portion 2022 to form a battery case 202 with a storage space; the first case portion 2021 and the second case portion 2022 can also be hollow structures with one side open, and the open side of the first case portion 2021 covers the open side of the second case portion 2022 to form a battery case 202 with a storage space. Of course, the first box body 2021 and the second box body 2022 can be in various shapes, such as a cylinder, a cuboid, etc.

[0073] In order to improve the sealing performance after the first box body 2021 and the second box body 2022 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 2021 and the second box body 2022 .

[0074] Assuming that the first box body portion 2021 covers the top of the second box body portion 2022 , the first box body portion 2021 can also be referred to as an upper box cover, and the second box body portion 2022 can also be referred to as a lower box cover.

[0075] In the battery 2, there can be one or at least two battery cells. At least two battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. At least two battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by at least two battery cells is accommodated in the battery box 202; of course, at least two battery cells can also be connected in series, in parallel, or in a mixed connection to form a battery module 44, and at least two battery modules 44 are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the battery box 202.

[0076] Figure 3 A schematic diagram of the structure of a battery module in a battery provided in an embodiment of the present application.

[0077] In some embodiments, Figure 2 and Figure 3 As shown, at least two battery cells 3 are first connected in series or in parallel or in mixed series to form a battery module 44. At least two battery modules 44 are then connected in series or in parallel or in mixed series to form a whole, and are accommodated in the battery box 202.

[0078] At least two battery cells 3 in the battery module 44 may be electrically connected via a busbar component to achieve parallel connection, series connection, or mixed connection of at least two battery cells 3 in the battery module 44 .

[0079] In the present application, the battery cell 3 may include a lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell 3 may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. The battery cell 3 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this. However, for the sake of simplicity, the following embodiments are all described using square battery cells as an example.

[0080] See also Figure 4 , Figure 5 and Figure 6 , Figure 4 An exploded view of a battery assembly provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application; Figure 6 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application.

[0081] First, as Figures 4 to 6 As shown, the present application provides a battery assembly 4, which includes a first battery module 41 and a second battery module 42, the first battery module 41 includes a first repeating unit 411, the first repeating unit 411 includes a plurality of battery cells 3 arranged along a first direction X; the second battery module 42 is located on one side of the first battery module 41 in the first direction X, the second battery module 42 includes a second repeating unit 421, the second repeating unit 421 includes a plurality of battery cells 3 arranged along the first direction X; wherein the arrangement of the terminals 43 of the battery cells 3 in at least one second repeating unit 421 and the arrangement of the terminals 43 in at least one first repeating unit 411 are mirrored with respect to a reference line extending along the first direction X.

[0082] In the solution of the embodiment of the present application, the battery assembly 4 includes a first battery module 41 and a second battery module 42. When CMCs are respectively arranged on both sides of the first direction X of the battery assembly 4, the two CMCs are respectively connected to the first battery module 41 and the second battery module 42. The first battery module 41 includes a first repeating unit 411, and the first repeating unit 411 includes a plurality of battery cells 3 arranged along the first direction X. The second battery module 42 is located on one side of the first battery module 41 in the first direction X. The second battery module 42 includes a second repeating unit 421, and the second repeating unit 4 21 includes a plurality of battery cells 3 arranged along a first direction X, and an arrangement mode of terminals 43 of the battery cells 3 in at least one second repeating unit 421 and an arrangement mode of terminals 43 in at least one first repeating unit 411 are mirror-set with respect to a reference line extending along the first direction X, so that the connection forms of the two CMCs and the first battery module 41 and the second battery module 42 are the same, so that the two CMCs located on both sides of the battery assembly 4, respectively, and the first battery module 41 and the second battery module 42 can be used interchangeably, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0083] The battery assembly 4 is contained in a battery box (not shown), and the battery assembly 4 includes a first battery module 41 and a second battery module 42 arranged along a first direction X. According to actual needs, one battery assembly 4 or at least two battery assemblies 4 connected in parallel with each other can be arranged in the box. The embodiment of the present application takes one battery assembly 4 as an example.

[0084] Specifically, each of the first repeating unit 411 and the second repeating unit 421 includes at least two battery cells 3 arranged along the first direction X and connected in series with each other. Two adjacent battery cells 3 in the first direction X are connected by a conductive component. The conductive component is electrically connected to the CMC. Exemplarily, one end of the conductive component is connected to the positive output terminal of one battery cell 3, and the other end of the conductive component is connected to the negative output terminal of another battery cell 3. Exemplarily, the conductive component is a copper bar or an aluminum bar. Several terminals 43 are provided in the first repeating unit 411 and the second repeating unit 421, and the CMC is connected to the battery cell 3 through the terminal 43 so that the CMC can monitor the status of the first repeating unit 411 and the second repeating unit 421. Specifically, the terminal 43 can be provided on the conductive component. In order to indicate that there are differences between the terminals 43, they are distinguished and marked by a, b, c...f; A, B, C...F in the accompanying drawings. The same terminal 43 is marked the same, and different terminals 43 are marked differently.

[0085] In the same battery assembly 4 , the number of repeating units provided in the first battery module 41 and the second battery module 42 is the same, and the number of battery cells 3 provided in each repeating unit is the same.

[0086] Specifically, the repeating unit includes a first repeating unit 411 located in the first battery module 41 and a second repeating unit 421 located in the second battery module 42. Figure 6 As shown, the first battery module 41 includes a first repeating unit 411, and the second battery module 42 includes a second repeating unit 421. The first repeating unit 411 and the second repeating unit 421 have the same structure, that is, the type and quantity of the terminals 43 in the first repeating unit 411 and the second repeating unit 421 are the same, but the arrangement of the terminals 43 is mirrored with respect to the reference line extending along the first direction X; Figure 5 As shown, the first battery module 41 includes a plurality of second repeating units 421, and the second battery module 42 includes a plurality of second repeating units 421. Then, each first repeating unit 411 and each second repeating unit 421 in the first battery module 41 and the second battery module 42 corresponds to each other one by one, and the type and quantity of the terminals 43 in the corresponding first repeating units 411 and the second repeating units 421 are the same, but the arrangement of the terminals 43 is mirrored about the reference line extending along the first direction X. However, in the first battery module 41 or the second battery module 42, the structures of each first repeating unit 411 or the second repeating unit 421 are the same or different.

[0087] “The arrangement of the terminals 43 of the battery cells 3 in at least one second repeating unit 421 and the arrangement of the terminals 43 in at least one first repeating unit 411 are mirrored about a reference line extending in the first direction X” means that the types and quantities of the terminals 43 in the first repeating units 411 and the second repeating units 421 corresponding to each other in the first battery module 41 and the second battery module 42 are the same, that is, the types and quantities marked in the drawings are the same. In the corresponding first repeating units 411 and the second repeating units 421, the arrangement of the terminals 43 in the first repeating unit 411, that is, the arrangement of the marks in the first direction X and the second direction Y in the drawings, are mirrored about a reference line extending in the first direction X. In the drawings, a reference line S is shown for ease of understanding. The reference line is a virtual line and does not need to be reflected in the actual product.

[0088] Or intuitively, in the first repeating unit 411 and the second repeating unit 421 corresponding to each other, the first repeating unit 411 and the second repeating unit 421 both include a first terminal column and a second terminal column arranged opposite to each other in the second direction Y, and the types, quantities and arrangement of the terminals 43 of the first terminal column in the first repeating unit 411 and the second repeating unit 421 in the first terminal column are the same in the first direction X, and the same is true for the second terminal column. When the first battery module 41 includes a plurality of first repeating units 411 and the second battery module 42 includes a plurality of second repeating units 421, in the first repeating unit 411 and the second repeating unit 421 corresponding to each other, along the second direction Y, the two second terminal columns are located between the two first terminal columns; when the first battery module 41 and the second battery module 42 include one first repeating unit 411 and one second repeating unit 421, the first terminal column and the second terminal column are arranged alternately in the first direction X.

[0089] In some embodiments, Figure 4 and Figure 6 As shown, a first repeating unit 411 is provided in the first battery module 41, and a second repeating unit 421 is provided in the second battery module 42. The arrangement of the terminals 43 of the battery cells 3 in the second repeating unit 421 is mirrored with the arrangement of the terminals 43 in the first repeating unit 411 about the reference line.

[0090] In these embodiments, a first repeating unit 411 is provided in the first battery module 41, and a second repeating unit 421 is provided in the second battery module 42. By making the arrangement of the terminals 43 of the battery cells 3 in the second repeating unit 421 mirror the arrangement of the terminals 43 in the first repeating unit 411 about the reference line, the CMC structures connected to the first battery module 41 and the second battery module 42 are the same, and the two CMCs are universal, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0091] Exemplarily, the reference line may be located in the middle of the battery assembly 4 in the second direction Y. The arrangement of the terminals 43 in the first terminal columns of the first repeating unit 411 and the second repeating unit 421 is mirrored about the reference line, and the arrangement of the terminals 43 in the second terminal column is similar.

[0092] In some embodiments, Figure 4 and Figure 5As shown, the first battery module 41 includes a plurality of first repeating units 411 arranged along the second direction Y, the second battery module 42 includes a plurality of second repeating units 421 arranged along the second direction Y, and the number of the first repeating units 411 is the same as the number of the second repeating units 421, and the arrangement mode of the terminals 43 of the battery cells 3 of the nth first repeating unit 411 in the first battery module 41 in the positive direction Y1 of the second direction, and the arrangement mode of the terminals 43 of the battery cells 3 of the nth second repeating unit 421 in the second battery module 42 in the negative direction Y2 of the second direction are mirrored about the reference line.

[0093] In these embodiments, the first battery module 41 includes a plurality of first repeating units 411 arranged along the second direction Y, the second battery module 42 includes a plurality of second repeating units 421 arranged along the second direction Y, and the number of the first repeating units 411 is the same as the number of the second repeating units 421. By making the arrangement mode of the terminals 43 of the battery cells 3 of the nth first repeating unit 411 in the first battery module 41 on the positive direction Y1 of the second direction and the arrangement mode of the terminals 43 of the battery cells 3 of the nth second repeating unit 421 in the second battery module 42 on the negative direction Y2 of the second direction mirror-set about the reference line, the CMC structures connected to the first battery module 41 and the second battery module 42 are the same, and the two CMCs are universal, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0094] When the first battery module 41 includes a plurality of first repeating units 411 and the second battery module 42 includes a plurality of second repeating units 421, the nth first repeating unit 411 in the positive direction Y1 of the second direction in the first battery module 41 and the nth second repeating unit 421 in the negative direction Y2 of the second direction in the second battery module 42 are arranged correspondingly. The positive direction Y1 of the second direction and the negative direction Y2 of the second direction are arranged oppositely.

[0095] For example, along the positive direction Y1 of the second direction, the first repeating unit 411 in the first battery module 41 is the first unit, the second unit and the third unit in sequence; the second repeating unit 421 in the second battery module 42 is the fourth unit, the fifth unit and the sixth unit in sequence. Then the first unit corresponds to the sixth unit, the second unit corresponds to the fifth unit, and the third unit corresponds to the fourth unit.

[0096] Please also read Figures 7 to 13 . Second, such as Figures 7 to 13As shown, the present application provides a first connection structure 5, the first connection structure 5 is used to connect with the battery assembly 4 of the first aspect embodiment, the first connection structure 5 includes a first connection member 51 and a second connection member 52 arranged along the first direction X, the first connection member 51 is connected to the first repeating unit 411, the second connection member 52 is connected to the second repeating unit 421, the first connection member 51 includes a first segment 531 and a second segment 532 arranged along the positive direction Y1 of the second direction, the second connection member 52 includes a first segment 531 and a second segment 532 arranged along the negative direction Y2 of the second direction, the first segment 531 and the second segment 532 Each segment 532 includes a plurality of connecting portions 54 arranged along the second direction Y, and the connecting portions 54 are connected to the terminal 43. In the first connector 51 and the second connector 52 connected to the first repeating unit 411 and the second repeating unit 421 which are arranged in a manner mirrored with the terminal 43 along the reference line, the arrangement manner of the connecting portion 54 of the first segment 531 of the first connector 51 is the same as the arrangement manner of the connecting portion 54 of the first segment 531 of the second connector 52, and the arrangement manner of the connecting portion 54 of the second segment 532 of the first connector 51 is the same as the arrangement manner of the connecting portion 54 of the second segment 532 of the second connector 52.

[0097] In the scheme of the embodiment of the present application, the first connecting structure 5 is connected to the battery assembly 4, and the first connecting structure 5 includes a first connecting member 51 and a second connecting member 52 arranged along the first direction X, and the first connecting member 51 and the second connecting member 52 are respectively connected to the first repeating unit 411 and the second repeating unit 421, and the first connecting member 51 includes a first segment 531 and a second segment 532 arranged along the positive direction Y1 of the second direction, and the second connecting member 52 includes a first segment 531 and a second segment 532 arranged along the negative direction Y2 of the second direction, and the first segment 531 and the second segment 532 both include a plurality of connecting portions 54 arranged along the second direction Y, and the connecting portion 54 is connected to the terminal 43, and the terminal 43 of the repeating unit is connected to the CMC through the connecting portion 54, and the arrangement method with the terminal 43 is about the arrangement method along the reference direction. In the first connector 51 and the second connector 52 connected by the first repeating unit 411 and the second repeating unit 421 which are set in a mirror image, the arrangement mode of the connecting portion 54 of the first segment 531 of the first connector 51 is the same as the arrangement mode of the connecting portion 54 of the first segment 531 of the second connector 52, and the arrangement mode of the connecting portion 54 of the second segment 532 of the first connector 51 is the same as the arrangement mode of the connecting portion 54 of the second segment 532 of the second connector 52, so that the structures of the first connector 51 and the second connector 52 are the same, and the structures of the two CMCs respectively connected to the first connector 51 and the second connector 52 are the same, so that the two CMCs respectively connected to the first battery module 41 and the second battery module 42 can be used interchangeably, so as to reduce the preparation cost of the CMC and save the preparation cost of the battery.

[0098] The first connection structure 5 may be a printed circuit board or a flexible circuit board or a flexible wiring harness, and a detection circuit arranged on the printed circuit board or the flexible circuit board and composed of a metal conductive foil, the metal conductive foil may be a copper foil or an aluminum foil. The first connection structure 5 is provided with a plurality of connection parts 54, and the connection parts 54 may be metal foil exposed on the printed circuit board or the flexible circuit board.

[0099] Among them, Figure 7 To Attachment Fig.13 The first connector 51 and the second connector 52 are connected to the first repeating unit 411 and the second repeating unit 421 respectively, and each connecting portion 54 is connected to each terminal 43. To facilitate the distinction and identification of each connecting portion 54, the connecting portion 54 is marked by the terminal 43 to which it is connected. For example, the connecting portion 54 marked as A indicates that the connecting portion 54 is connected to the terminal 43 marked as A.

[0100] The number of the first connectors 51 and the second connectors 52 in the first connection structure 5 matches the number of the first repeating units 411 and the second repeating units 421 in the battery assembly 4. Each first connection structure 5 is connected to one battery assembly 4, one first connector 51 is connected to the first repeating unit 411, one second connector 52 is connected to the second repeating unit 421, the first connector 51 and the second connector 52 each include a first segment 531 and a second segment 532, the first segment 531 and the second segment 532 are respectively connected to one terminal column, and the connecting portion 54 is connected to the terminal 43.

[0101] “In the first connector 51 and the second connector 52 connected to the first repeating unit 411 and the second repeating unit 421 arranged in a mirror image along the reference line in the arrangement of the terminal 43” means that the first connector 51 and the second connector 52 connected to the first repeating unit 411 and the second repeating unit 421 arranged in correspondence with each other correspond to each other. In the first connector 51 and the second connector 52 corresponding to each other, the type, quantity and arrangement of the connecting parts 54 in the two first segments 531 and the type, quantity and arrangement of the connecting parts 54 in the second direction Y are the same, and the type, quantity and arrangement of the connecting parts 54 in the two second segments 532 are the same.

[0102] In some embodiments, Figure 7As shown, the first battery module 41 in the battery assembly 4 includes two first repeating units 411, and the second battery module 42 includes two second repeating units 421. The first repeating unit 411 and the second repeating unit 421 each include a battery cell 3. Two terminals 43 are provided in one battery cell 3, and the two terminals 43 are respectively provided at the positive output end and the negative output end of the battery cell 3. Each battery cell 3 is connected to a first connector 51 or a second connector 52. In the first connection structure 5, a connecting portion 54 is provided on each of the first segment 531 and the second segment 532.

[0103] In some embodiments, Figure 8 As shown, the first battery module 41 in the battery assembly 4 includes two first repeating units 411, and the second battery module 42 includes two second repeating units 421. The first repeating unit 411 and the second repeating unit 421 each include two battery cells 3, and the two battery cells 3 are arranged along the first direction X and connected in series. Three terminals 43 are provided in a first repeating unit 411 or a second repeating unit 421, one terminal 43 is provided at the positive output end of one battery cell 3, and the other terminal 43 is provided at the negative output end of another battery cell 3, and one terminal 43 simultaneously connects in series the positive output ends and the negative output ends of two battery cells 3 connected in series. The first connector 51 is connected to the first repeating unit 411, and the second connector 52 is connected to the second repeating unit 421. Two connecting parts 54 are provided in the first segment 531, and one connecting part 54 is provided in the second segment 532, and each connecting part 54 is connected to the terminal 43.

[0104] In some embodiments, Fig. 9 As shown, the first battery module 41 in the battery assembly 4 includes two first repeating units 411, and the second battery module 42 includes two second repeating units 421. The first repeating unit 411 and the second repeating unit 421 each include three battery cells 3, and the three battery cells 3 are arranged along the first direction X and connected in series. Four terminals 43 are provided in a first repeating unit 411 or a second repeating unit 421, one terminal 43 is provided at the positive output end of a battery cell 3, and the other terminal 43 is provided at the negative output end of another battery cell 3, and the two terminals 43 are respectively connected in series to three of the battery cells 3. Each first repeating unit 411 or a second repeating unit 421 is connected to a first connector 51 or a second connector 52, and two connecting parts 54 are respectively provided on the first segment 531 and the second segment 532, and each connecting part 54 is correspondingly connected to each terminal 43.

[0105] In some embodiments, Fig.10As shown, the first battery module 41 in the battery assembly 4 includes two first repeating units 411, and the second battery module 42 includes two second repeating units 421. The first repeating unit 411 and the second repeating unit 421 each include four battery cells 3, and the four battery cells 3 are arranged along the first direction X and connected in series. Five terminals 43 are provided in a first repeating unit 411 or a second repeating unit 421, one terminal 43 is provided at the positive output end of one battery cell 3, and another terminal 43 is provided at the negative output end of another battery cell 3, and the three terminals 43 are respectively connected in series to four of the battery cells 3. The first connector 51 is connected to the first repeating unit 411, and the second connector 52 is connected to the second repeating unit 421. Three connecting portions 54 are provided in the first segment 531, and two connecting portions 54 are provided in the second segment 532, and each connecting portion 54 is connected to the terminal 43.

[0106] In some embodiments, Fig.11 As shown, the first battery module 41 in the battery assembly 4 includes two first repeating units 411, and the second battery module 42 includes two second repeating units 421. The first repeating unit 411 and the second repeating unit 421 each include five battery cells 3, and the five battery cells 3 are arranged along the first direction X and connected in series. Six terminals 43 are provided in a first repeating unit 411 or a second repeating unit 421, one terminal 43 is provided at the positive output end of a battery cell 3, and another terminal 43 is provided at the negative output end of another battery cell 3, and the four terminals 43 are respectively connected in series with five of the battery cells 3. Each first repeating unit 411 or a second repeating unit 421 is connected to a first connector 51 or a second connector 52, and three connecting parts 54 are respectively provided on the first segment 531 and the second segment 532, and each connecting part 54 is correspondingly connected to each terminal 43.

[0107] In some embodiments, Fig.12 As shown, the first battery module 41 in the battery assembly 4 includes a first repeating unit 411 , and the second battery module 42 includes a second repeating unit 421 . One or at least two battery cells 3 are arranged along the first direction X in the first repeating unit 411 or the second repeating unit 421 .

[0108] In some embodiments, Fig.13 As shown, the first battery module 41 in the battery assembly 4 includes three first repeating units 411, and the second battery module 42 includes three second repeating units 421. One or at least two battery cells 3 are arranged along the first direction X in the first repeating unit 411 or the second repeating unit 421.

[0109] Therefore, in actual application, the user can set the structure of the battery assembly 4 by himself, such as setting one or at least two first repeating units 411 or second repeating units 421 in a battery assembly 4, and setting one or at least two battery cells 3 in a first repeating unit 411 or second repeating unit 421.

[0110] Optionally, the first segment 531 and the second segment 532 have the same size in the second direction Y.

[0111] Optionally, the first segment 531 and the second segment 532 located on a first connector 51 or a second connector 52 are separately arranged, and the arrangement direction of each first segment 531 and the second segment 532 can be adjusted individually to facilitate the connection between each first connector 51 or the second connector 52 and the CMC.

[0112] Optionally, the first segment 531 and the second segment 532 located on a first connecting member 51 or a second connecting member 52 are integrally arranged and movably connected, so as to facilitate adjustment of the arrangement direction of each first segment 531 and the second segment 532 and facilitate connection between each first connecting member 51 or the second connecting member 52 and the CMC.

[0113] In some embodiments, Fig.13 As shown, along the second direction Y, a bending section 533 is provided between the first section 531 and the second section 532 , and the first section 531 and the second section 532 are bendably provided around the bending section 533 .

[0114] In these embodiments, along the second direction Y, a bending section 533 is provided between the first section 531 and the second section 532, and the first section 531 and the second section 532 are bendable around the bending section 533. By folding the first section 531 and the second section 532 in the first connector 51 and the second connector 52, the arrangement of the connecting portion 54 in the first connector 51 and the second connector 52 is adjusted, so that the two CMCs respectively connected to the first connector 51 and the second connector 52 can be used interchangeably, thereby reducing the preparation cost of the CMC and the preparation cost of the battery.

[0115] The first segment 531 and the second segment 532 are bendable around the bending segment 533, and the arrangement of the connecting portion 54 of the first segment 531 and the second segment 532 is changed by adjusting the different folding modes of the first segment 531 and the second segment 532 in the first connector 51 and the second connector 52. Specifically, the first connector 51 and the second connector 52 include a first surface and a second surface that are oppositely arranged in the thickness direction thereof, and the first segment 531 in the first connector 51 is located at a side of the second segment 532 where the first surface is arranged, and the first segment 531 in the second connector 52 is located at a side of the second segment 532 where the second surface is arranged.

[0116] Optionally, the bending section 533 is made of different materials from the first section 531 and the second section 532 , and the bending section 533 is made of a flexible material to facilitate deformation of the bending section 533 .

[0117] In some embodiments, Fig.11 As shown, the dimension L1 of the bending section 533 in the second direction Y is greater than or equal to 2 mm.

[0118] In these embodiments, the length L1 of the bending section 533 in the second direction Y is greater than or equal to 2 mm, so as to improve the problem that the spacing between the first segment 531 and the second segment 532 is too low due to the size of the bending section 533 being too low, resulting in accidental contact between the first segment 531 and the second segment 532, causing failure of the first connecting structure 5, thereby improving the reliability of the battery.

[0119] Exemplarily, a dimension L1 of the bending section 533 in the second direction Y is 2 mm or 2.5 mm.

[0120] See also Fig.14 , Fig.14 A schematic structural diagram of a first connecting member or a second connecting member of a first connecting structure provided in an embodiment of the present application.

[0121] In some embodiments, Fig.13 and Fig.14 As shown, a dimension L3 of the bending segment 533 in the first direction X is smaller than a dimension L2 of the first segment 531 in the first direction X.

[0122] In these embodiments, a dimension L3 of the bending section 533 in the first direction X is smaller than a dimension L2 of the first segment 531 in the first direction X, so that an avoidance space is formed on one side of the bending section 533 in the first direction X. The avoidance space can reduce the difficulty of connecting the first connector 51 or the second connector 52 and the CMC, reduce the probability of interference between the first connector 51 or the second connector 52 and the CMC, and improve the practicability of the first connector 51 or the second connector 52.

[0123] The dimension L3 of the bending section 533 in the first direction X is smaller than the dimension L2 of the first connecting member 51 and the second connecting member 52 in the first direction X, so that the bending section 533 is recessed along the first direction X to provide an avoidance space, so that when the first connecting member 51 and the second connecting member 52 are connected to the slot 61 (not shown) on the CMC, the bending section 533 will not enter the slot 61 of the CMC, thereby reducing the problem of difficulty in connecting the first connecting structure 5 and the CMC due to interference between the bending section 533 and the CMC.

[0124] See also Fig.15 , Fig.15A front view of a first connecting member or a second connecting member of a first connecting structure provided in an embodiment of the present application.

[0125] In some embodiments, Fig.13 and Fig.15 As shown, the first connecting member 51 and the second connecting member 52 both include a folded state. The first connecting member 51 and the second connecting member 52 are configured so that in the folded state, the first segment 531 and the second segment 532 are stacked along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect with each other. The first connecting structure 5 also includes a supporting member 55. In the folded state, the supporting member 55 abuts between the first segment 531 and the second segment 532.

[0126] In these embodiments, when the first connecting member 51 and the second connecting member 52 are in a folded state, a support member 55 is provided between the first segment 531 and the second segment 532, and the support member 55 is used to limit the distance between the first segment 531 and the second segment 532, so as to improve the problem of damage to the first connecting member 51 or the second connecting member 52 due to bending of the first connecting member 51 or the second connecting member 52, thereby improving the service life of the first connecting structure 5.

[0127] Optionally, the support member 55 is foam, which provides support and cushioning for the first segment 531 and the second segment 532 .

[0128] Optionally, the support member 55 is bonded to one of the first segment 531 or the second segment 532 to improve the connection reliability between the support member 55 and the first connecting member 51 or the second connecting member 52 .

[0129] See also Fig.16 and Fig.17 , Fig.16 An exploded view of a battery provided in an embodiment of the present application; Fig.17 A schematic diagram of the structure of a battery provided in an embodiment of the present application.

[0130] Thirdly, Fig.11 , Fig.16 and Fig.17 As shown, the present application provides a battery 2, including a battery assembly 4 of the first aspect embodiment and a first connection structure 5 of the second aspect embodiment, a plurality of terminals 43 are provided on the first repeating unit 411 and the second repeating unit 421, and the terminals 43 and the connecting part 54 are electrically connected.

[0131] In the technical solution of the embodiment of the present application, the battery 2 includes a battery assembly 4 and a first connecting structure 5, and the connecting portion 54 of the first connecting structure 5 is electrically connected to the terminal 43 on the battery assembly 4, so that the connecting portion 54 located at the first connecting member 51 and the second connecting member 52 are arranged in the same manner, and the CMC is connected to the first connecting member 51 or the second connecting member 52, so that the two CMCs located on both sides of the battery assembly 4 can be used interchangeably, thereby reducing the preparation cost of the CMC and saving the preparation cost of the battery 2.

[0132] The connecting portion 54 of the first connecting member 51 or the second connecting member 52 in the first connecting structure 5 is connected to the terminal 43 of the first repeating unit 411 or the second repeating unit 421 in the battery assembly 4. The number of the connecting portions 54 matches the number of the terminals 43. Alternatively, the number of the connecting portions 54 is greater than the number of the terminals 43, and only some of the connecting portions 54 are connected to the terminals 43.

[0133] See also Fig.18 , Fig.18 A schematic diagram of the structure of the plug-in portion of the battery provided in an embodiment of the present application.

[0134] In some embodiments, Fig.11 and Figures 16 to 18 As shown, the battery 2 also includes a second connecting structure 6 connected to the first connecting structure 5. The two second connecting structures 6 are respectively arranged on both sides of the battery assembly 4 in the first direction X. A slot 61 is arranged on the second connecting structure 6. Two sub-slots 611 are arranged in the slot 61. The first segment 531 and the second segment 532 are respectively inserted into a sub-slot 611.

[0135] In these embodiments, the two second connecting structures 6 are respectively arranged on both sides of the battery assembly 4 in the first direction X, and a slot 61 is provided on the second connecting structure 6. Two sub-slots 611 are provided in the slot 61. The first segment 531 and the second segment 532 are respectively inserted into a sub-slot 611, and the connecting parts 54 of the first connecting structure 5 in the sub-slots 611 corresponding to the two second connecting structures 6 are arranged in the same manner, so that the two second connecting structures 6 can be used interchangeably, thereby reducing the preparation cost of the battery 2.

[0136] The second connection structure 6 is used to collect status information of the battery assembly 4, such as the temperature or voltage of the battery assembly 4. Exemplarily, the second connection structure 6 is a CMC. The first connection structure 5 is connected between the battery assembly 4 and the second connection structure 6, so that the first connection structure 5, the second connection structure 6 and the battery assembly 4 form a detection loop.

[0137] The two second connection structures 6 are respectively arranged on both sides of the battery assembly 4 in the first direction X, which means that the two second connection structures 6 are arranged between the two battery assemblies 4, or the two second connection structures 6 are respectively arranged between the two battery assemblies 4 and the wall panels of the box 202 of the battery 2.

[0138] Optionally, the second connection structure 6 includes a main body and an inserting portion 62 , the inserting portion 62 is provided with a slot 61 , and the main body and the inserting portion 62 are detachably connected.

[0139] In some embodiments, Figures 16 to 18 As shown, the first connecting member 51 and the second connecting member 52 both include a folded state. The first connecting member 51 and the second connecting member 52 are configured to be in the folded state, the first segment 531 and the second segment 532 are stacked along the third direction Z, and the two sub-slots 611 located in the same slot 61 are arranged along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0140] In these embodiments, two sub-slots 611 in the same slot 61 in the second connection structure 6 are arranged along the third direction Z to match the first segment 531 and the second segment 532 stacked along the third direction Z, thereby improving the connection reliability of the first connection structure 5 and the second connection structure 6.

[0141] Optionally, the two first sub-slots 611 have the same shape.

[0142] In a fourth aspect, the present application provides an electrical device, comprising the battery 2 of the above-mentioned third aspect embodiment.

[0143] In some embodiments, Figures 1 to 18 As shown, the battery 2 includes a battery assembly 4, a first connection structure 5 and a second connection structure 6.

[0144] The battery assembly 4 includes a first battery module 41 and a second battery module 42, the first battery module 41 includes a first repeating unit 411, the first repeating unit 411 includes a plurality of battery cells 3 arranged along a first direction X; the second battery module 42 is located on one side of the first battery module 41 in the first direction X, the second battery module 42 includes a second repeating unit 421, the second repeating unit 421 includes a plurality of battery cells 3 arranged along the first direction X; wherein the arrangement mode of the terminals 43 of the battery cells 3 in at least one second repeating unit 421 and the arrangement mode of the terminals 43 in at least one first repeating unit 411 are mirrored with respect to a reference line extending along the first direction X;

[0145] The first connection structure 5 includes a first connection member 51 and a second connection member 52 arranged along the first direction X, the first connection member 51 is connected to the first repeating unit 411, the second connection member 52 is connected to the second repeating unit 421, the first connection member 51 includes a first segment 531 and a second segment 532 arranged along the positive direction Y1 of the second direction, the second connection member 52 includes a first segment 531 and a second segment 532 arranged along the negative direction Y2 of the second direction, and the first segment 531 and the second segment 532 each include a plurality of connection portions arranged along the second direction Y. 54, the connecting portion 54 is connected to the terminal 43, in the first connector 51 and the second connector 52 connected to the first repeating unit 411 and the second repeating unit 421 which are arranged in a mirror image along the reference line with respect to the arrangement of the terminal 43, the arrangement of the connecting portion 54 of the first segment 531 of the first connector 51 is the same as the arrangement of the connecting portion 54 of the first segment 531 of the second connector 52, and the arrangement of the connecting portion 54 of the second segment 532 of the first connector 51 is the same as the arrangement of the connecting portion 54 of the second segment 532 of the second connector 52,

[0146] A bending section 533 is provided between the first section 531 and the second section 532. The first section 531 and the second section 532 are bendable around the bending section 533. The first connecting member 51 and the second connecting member 52 both include a folded state. The first connecting member 51 and the second connecting member 52 are configured such that in the folded state, the first section 531 and the second section 532 are stacked along the third direction Z. The first direction X, the second direction Y and the third direction Z intersect each other. The first connecting structure 5 further includes a supporting member 55. In the folded state, the supporting member 55 abuts between the first section 531 and the second section 532.

[0147] The two second connection structures 6 are respectively arranged on both sides of the battery assembly 4 in the first direction X. The second connection structure 6 is provided with a slot 61. The slot 61 is provided with two sub-slots 611. The first segment 531 and the second segment 532 are respectively inserted into one of the sub-slots 611.

[0148] In the scheme of the embodiment of the present application, the battery 2 includes a battery assembly 4 and a first connecting structure 5, and the connecting portion 54 of the first connecting structure 5 is electrically connected to the terminal 43 on the battery assembly 4, so that the connecting portion 54 located at the first connecting member 51 and the second connecting member 52 are arranged in the same manner, and the CMC is connected to the first connecting member 51 or the second connecting member 52, so that the two CMCs located on both sides of the battery assembly 4 can be used interchangeably, thereby reducing the preparation cost of the CMC and saving the preparation cost of the battery 2.

[0149] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, 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 assembly, characterized in that: include: A first battery module, comprising a first repeating unit, wherein the first repeating unit comprises a plurality of battery cells arranged along a first direction; A second battery module, located at one side of the first battery module in the first direction, the second battery module comprising a second repeating unit, the second repeating unit comprising a plurality of battery cells arranged along the first direction; The arrangement of terminals of the battery cells in at least one of the second repeating units and the arrangement of terminals in at least one of the first repeating units are mirror images with respect to a reference line extending along the first direction.

2. The battery assembly according to claim 1, characterized in that: The first battery module is provided with a first repeating unit, the second battery module is provided with a second repeating unit, and the terminal arrangement of the battery cells in the second repeating unit is mirrored with the terminal arrangement in the first repeating unit about the reference line.

3. The battery assembly according to claim 1, characterized in that: The first battery module includes a plurality of the first repeating units arranged along a second direction, the second battery module includes a plurality of the second repeating units arranged along the second direction, and the number of the first repeating units is the same as the number of the second repeating units, The terminal arrangement of the battery cells of the nth first repeating unit in the positive direction of the second direction in the first battery module and the terminal arrangement of the battery cells of the nth second repeating unit in the negative direction of the second direction in the second battery module are mirrored about the reference line.

4. A first connection structure, used to connect with the battery assembly according to any one of claims 1 to 3, characterized in that: The first connection structure includes a first connection member and a second connection member arranged along a first direction, the first connection member is connected to the first repeating unit, the second connection member is connected to the second repeating unit, the first connection member includes a first segment and a second segment arranged along a positive direction of the second direction, the second connection member includes a first segment and a second segment arranged along a negative direction of the second direction, the first segment and the second segment each include a plurality of connection portions arranged along the second direction, the connection portions are connected to the terminals, In the first connector and the second connector connected to the first repeating unit and the second repeating unit mirrored along the reference line with respect to the arrangement of the terminals, the arrangement of the connecting portion of the first segment of the first connector is the same as the arrangement of the connecting portion of the first segment of the second connector, and the arrangement of the connecting portion of the second segment of the first connector is the same as the arrangement of the connecting portion of the second segment of the second connector.

5. The first connection structure according to claim 4, characterized in that: Along the second direction, a bending section is arranged between the first section and the second section, and the first section and the second section are bendably arranged around the bending section.

6. The first connection structure according to claim 5, characterized in that: The dimension of the bending section in the second direction is greater than or equal to 2 mm.

7. The first connection structure according to claim 5, characterized in that: A size of the bending segment in the first direction is smaller than a size of the first segment in the first direction.

8. The first connection structure according to claim 5, characterized in that: The first connecting member and the second connecting member both include a folded state, and the first connecting member and the second connecting member are configured such that in the folded state, the first segment and the second segment are stacked along a third direction, and the first direction, the second direction and the third direction intersect each other. The first connecting structure further includes a supporting member, and in the folded state, the supporting member abuts between the first segment and the second segment.

9. A battery, characterized in that: comprising the battery assembly according to any one of claims 1 to 3 and the first connection structure according to any one of claims 4 to 8, A plurality of terminals are provided on the first repeating unit and the second repeating unit, and the terminals are electrically connected to the connecting portion.

10. The battery according to claim 9, characterized in that The battery also includes a second connecting structure connected to the first connecting structure, and two second connecting structures are respectively arranged on both sides of the battery assembly in the first direction. The second connecting structure is provided with a slot, and two sub-slots are provided in the slot. The first segment and the second segment are respectively inserted into one of the sub-slots.

11. The battery according to claim 10, characterized in that The first connecting member and the second connecting member both include a folded state, and the first connecting member and the second connecting member are configured such that in the folded state, the first segment and the second segment are stacked along a third direction, and the first direction, the second direction and the third direction intersect each other. The two sub-slots located in the same slot are arranged along the third direction.

12. An electrical equipment, characterized in that: A battery comprising any one of claims 9 to 11.

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