Battery, power consuming device, method of manufacturing battery, and apparatus

Abstract

The application provides a battery, a power utilization device, a battery manufacturing method and equipment. The battery comprises a box body, a battery cell group, an end plate, an electric energy leading-out element and / or a sampling unit. The box body comprises a side wall for enclosing a containing cavity. The battery cell group is arranged in the containing cavity and comprises a plurality of battery cells which are arranged in layers. The end plate is arranged in the containing cavity and located between the battery cell group and the side wall. The electric energy leading-out element is used for leading out electric energy of the battery cell group. The electric energy leading-out element comprises a first section, a second section and a third section which are connected in sequence. The second section is embedded in the end plate. The first section and the third section extend from the end plate. The first section is electrically connected with the battery cell group. The sampling unit is used for collecting signals of the battery cell group. The sampling unit penetrates the end plate. One end of the sampling unit is connected with the battery cell group. In the technical scheme of the application, the battery structure has high integration, which is beneficial to improving the space utilization of the battery, thereby improving the energy density of the battery and improving the connection stability of the electric energy leading-out element and the sampling unit.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery, an electrical device, a method for manufacturing the battery, and equipment. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] Improving battery energy density is an important direction for the development of the battery industry. However, the low space utilization rate of existing batteries seriously affects the improvement of battery energy density. Summary of the Invention

[0004] This application provides a battery, an electrical device, a method for manufacturing the battery, and an apparatus. The battery can effectively improve space utilization and is beneficial to increasing the energy density of the battery.

[0005] This application provides a battery, comprising: a housing including sidewalls for enclosing and forming a receiving cavity; a battery cell group disposed within the receiving cavity and including a plurality of battery cells, the plurality of battery cells being stacked; an end plate disposed within the receiving cavity and located between the battery cell group and the sidewalls; a power lead-out member for leading out power from the battery cell group, the power lead-out member including a first segment, a second segment, and a third segment connected in sequence, the second segment being embedded in the end plate, the first segment and the third segment extending out from the end plate, the first segment being electrically connected to the battery cell group; and / or a sampling unit for acquiring signals from the battery cell group, the sampling unit penetrating the end plate, one end of the sampling unit being connected to the battery cell group.

[0006] In the above technical solution, the battery's power lead-out components are embedded in the end plate and / or the sampling unit penetrates the end plate. This eliminates the need to reserve wiring space between the end plate and the casing wall for the power lead-out components and the sampling unit, which helps improve the battery's space utilization and thus increases its energy density. In addition, the integration of the power lead-out components and / or sampling unit into the end plate allows the end plate to limit and secure the power lead-out components and / or sampling unit, effectively improving the connection stability of the power lead-out components and sampling unit. This reduces the risk of connection interruption due to shaking, vibration, etc., thereby reducing the risk of short circuits and fires caused by broken power lead-out components, which helps improve the stability of battery performance.

[0007] In some embodiments, the first segment extends from the top of the end plate to be electrically connected to the battery cell assembly.

[0008] In the above technical solution, the first section of the power lead-out component extends from the top of the end plate. In order to facilitate assembly and maintenance, the current collector of the existing battery cells is located at the top of the overall battery structure. The first section of the power lead-out component of this application extends from the top of the end plate, which facilitates shortening the connection path with the battery cells and makes assembly and maintenance easier.

[0009] In some embodiments, the third segment extends from the bottom of the end plate.

[0010] In the above technical solution, the first section of the power lead-out component extends from the top of the end plate, and the third section extends from the bottom of the end plate. This allows the power lead-out component to extend along the thickness direction of the end plate, avoiding it occupying the space between the side wall of the enclosure and the end plate. No wiring space needs to be reserved between the end plate and the side wall of the enclosure, thus effectively improving the space utilization within the enclosure. Furthermore, this arrangement prevents positional interference between the end plate and the side wall of the enclosure when the end plate is placed downwards into the enclosure during battery assembly.

[0011] In some embodiments, the enclosure further includes a bottom wall, the side walls surround the bottom wall, the bottom wall has a through hole, and the third segment extends from the through hole to lead electrical energy to the outside of the enclosure.

[0012] In the above technical solution, the third section extends from the through hole in the bottom wall of the casing, facilitating the formation of the battery's power lead-out section to draw the battery's power to the outside of the casing to power the electrical device. The through hole in the bottom wall of the casing facilitates the insertion of the power lead-out component, improving the ease of battery assembly.

[0013] In some embodiments, the battery further includes an insulating member disposed between the wall of the through hole and the power lead-out member, for insulating and isolating the wall of the through hole and the power lead-out member.

[0014] In the above technical solution, an insulating component is installed between the wall of the through hole of the enclosure and the power lead-out component to form an insulating protection between the enclosure and the power lead-out component, thereby preventing short circuits between the power lead-out component and the enclosure, ensuring the insulation of the enclosure, and reducing the risk of leakage current in the enclosure.

[0015] In some embodiments, the insulating element is integrally formed with the end plate.

[0016] In the above technical solution, the insulation component and the end plate are integrally formed, which is conducive to improving the convenience of battery assembly. Compared with the method of separate insulation components, the structure of the insulation component being integrally formed into the end plate has higher error prevention performance. It can effectively prevent the risk of missing insulation components due to omissions in the assembly process, which is conducive to simplifying the assembly process and reducing the assembly defect rate and rework rate.

[0017] In some embodiments, the end plate and the power lead-out component are injection molded as a single unit.

[0018] In the above technical solution, the end plate and the power lead are injection molded as a single unit. The power lead has conductive properties. Integrating the power lead with the end plate through injection molding allows the injection-molded portion of the end plate to directly provide insulation and protection for the power lead, preventing short circuits. In addition, the end plate provides a firm limiting effect on the power lead, further improving the stability of the power lead connection. Simultaneously, after the single injection molding, the connection between the power lead and the end plate is sealed. When high-temperature and high-pressure gases are generated inside the battery, the gases cannot directly impact the power lead, thus effectively avoiding the risk of the high-temperature and high-pressure gases melting the power lead and causing a short circuit or fire, which is beneficial to improving the battery's safety performance.

[0019] In some embodiments, the power lead is detachably connected to the end plate, and the power lead is bent at least twice in its extending direction.

[0020] In the above technical solution, the power lead is detachably connected to the end plate. The end plate and the power lead can be manufactured separately and then assembled, which reduces the manufacturing difficulty. The structure of the power lead, which bends at least twice, gives it at least two bending angles. When high-temperature, high-pressure gas is generated inside the battery, the bending of the power lead increases the gas flow resistance, preventing gas from flowing along the gap between the power lead and the end plate. This effectively avoids the risk of the high-temperature, high-pressure gas melting the power lead, causing a short circuit or fire, thus improving the battery's safety performance.

[0021] In some embodiments, the bending angle of the power lead is 40° to 130°. Batteries typically use conductive metal as the power lead. If the bending angle is too small, it can easily affect the structural strength of the power lead, posing a risk of breakage. Conversely, if the bending angle is too large, it fails to effectively impede airflow. This embodiment controls the bending angle of the power lead between 40° and 130°, which helps to ensure the structural strength of the power lead while providing good gas impediment.

[0022] In some embodiments, the end plate includes: an end plate body having a first side facing the battery cell group and a second side facing away from the battery cell group, the first side abutting against the battery cell group; a plurality of first reinforcing ribs formed on the second side and abutting against the sidewall, the plurality of first reinforcing ribs being spaced apart in a vertical direction; wherein the second segment penetrates through the plurality of first reinforcing ribs.

[0023] In the above technical solution, the end plate includes an end plate body and reinforcing ribs formed on the end plate body. The reinforcing ribs effectively improve the structural strength of the end plate and enhance its resistance to deformation. Furthermore, compared to increasing the overall thickness of the end plate to increase its strength, the reinforcing ribs reduce the overall weight and material loss of the end plate while maintaining its structural strength, which helps reduce the weight and material cost of the battery. Moreover, the power lead penetrating multiple first reinforcing ribs reduces the difficulty of assembling the power lead with the end plate. In the implementation mode of "power lead detachably mounted on the end plate," the multiple first reinforcing ribs form multiple limiting parts for the power lead, facilitating its fixation and bending. Simultaneously, the power lead penetrating multiple first reinforcing ribs allows for direct observation of its status on the end plate, facilitating maintenance.

[0024] In some embodiments, the power lead-out member is detachably disposed on the end plate, and each of the first reinforcing ribs is provided with a clearance opening for avoiding the power lead-out member.

[0025] In the above technical solution, each first reinforcing rib is provided with a clearance opening for avoiding the power lead-out component. During assembly, the power lead-out component can be assembled onto the end plate by passing through the clearance opening of each first reinforcing rib in sequence, which helps to reduce the difficulty of assembly operations. In addition, the clearance opening can be staggered to give the power lead-out component a bending angle, which is convenient to implement and highly practical.

[0026] In some embodiments, the battery further includes an output electrode, one end of which is electrically connected to the battery cell group for outputting the electrical energy of the battery cell group, and the other end of which is electrically connected to the first segment.

[0027] In the above technical solution, the battery is equipped with an output terminal. One end of the output terminal is electrically connected to the battery cell assembly, and the other end is connected to the first section of the power lead-out component, which improves the modular assembly degree of the battery and facilitates battery maintenance.

[0028] In some embodiments, the battery further includes: a high-voltage distribution box disposed outside the housing, wherein the third section extends out of the housing to connect with the high-voltage distribution box.

[0029] In the above technical solution, the third section of the power lead-out component extends out of the box and connects to the high-voltage distribution box. During the charging and discharging process of the battery, the high-voltage distribution box plays a role in protecting the power battery system and power transmission and distribution.

[0030] In some embodiments, the end plate is provided with a channel through which the sampling unit passes, the channel extending from the top to the bottom of the end plate.

[0031] In the above technical solution, the end plate is provided with a channel, and the sampling unit can be confined to the end plate by passing through the channel. The sampling unit can be easily and quickly integrated into the end plate without changing the structure of the sampling unit. The operation is simple and feasible, and it is easy to add, remove or adjust the sampling unit, making it highly practical.

[0032] In some embodiments, one end of the sampling unit extends from the top of the end plate to connect with the battery cell assembly, and the other end of the sampling unit extends from the bottom of the end plate and passes through the housing to lead the signal to the outside of the housing.

[0033] In the above technical solution, one end of the sampling unit extends from the top of the end plate to connect with the battery cell assembly, and the other end of the sampling unit extends from the bottom of the end plate and passes through. This structure can effectively avoid the sampling unit occupying the space between the side wall of the box and the end plate, effectively saving space inside the box and thus improving the space utilization rate inside the box.

[0034] In some embodiments, the sampling unit includes: a sampling unit body; and a shielding portion formed on and protruding from the outer peripheral surface of the sampling unit body, the shielding portion being used to cover the gap between the sampling unit body and the inner wall of the channel.

[0035] In the above technical solution, the sampling unit includes a sampling unit body and a shielding part. The shielding part is used to cover the gap between the sampling unit body and the inner wall of the channel. When high-temperature and high-pressure gas is generated in the battery, the shielding part can effectively prevent the gas from flowing along the gap between the sampling unit and the end plate, thereby reducing the risk of high-temperature and high-pressure gas damaging the sampling unit, and preventing high-temperature and high-pressure gas from flowing through the gap between the sampling unit and the end plate in the box, affecting the normal directional discharge of gas in the battery.

[0036] Secondly, this application provides an electrical device including a battery as described in any of the above embodiments, wherein the battery is used to provide electrical energy.

[0037] Thirdly, this application provides a method for manufacturing a battery, comprising: providing a housing, the housing including sidewalls for enclosing and forming a receiving cavity; providing a battery cell assembly, the battery cell assembly including a plurality of battery cells stacked together; providing an end plate and a power lead-out member, the power lead-out member including a first segment, a second segment, and a third segment connected in sequence, the second segment being embedded in the end plate, and the first segment and the third segment extending out from the end plate; disposing the battery cell assembly in the receiving cavity; disposing the end plate and the power lead-out member in the receiving cavity, with the end plate positioned between the battery cell assembly and the sidewalls; and electrically connecting the first segment to the battery cell assembly.

[0038] Fourthly, this application provides a battery manufacturing apparatus, comprising: a providing module for providing a housing, a battery cell assembly, an end plate, and a power lead-out component, wherein the housing includes a sidewall for enclosing and forming a receiving cavity, the battery cell assembly includes a plurality of battery cells stacked together, and the power lead-out component includes a first segment, a second segment, and a third segment connected in sequence, the second segment being embedded in the end plate, and the first segment and the third segment extending out from the end plate; and an assembly module for placing the battery cell assembly in the receiving cavity, placing the end plate and the power lead-out component in the receiving cavity, and positioning the end plate between the battery cell assembly and the sidewall, and electrically connecting the first segment to the battery cell assembly. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0040] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0041] Figure 2 Exploded views of a battery from a first-view perspective provided for some embodiments of this application;

[0042] Figure 3 Exploded views of a battery from a second perspective, provided for some embodiments of this application;

[0043] Figure 4 for Figure 2 A magnified view of part A shown;

[0044] Figure 5 for Figure 3 A magnified view of part B shown;

[0045] Figure 6 Axonometric view of an end plate provided in some embodiments of this application from a first perspective;

[0046] Figure 7 Axonometric view of an end plate provided in some embodiments of this application from a second perspective;

[0047] Figure 8 This is a schematic diagram showing the state of the sampling unit penetrating the end plate in some embodiments of this application;

[0048] Figure 9 for Figure 8 The diagram shows the mating structure of the sampling unit penetrating the end plate;

[0049] Figure 10 Partial front cross-sectional view of a battery provided for some embodiments of this application;

[0050] Figure 11 for Figure 10 The top view shown;

[0051] Figure 12 This is a schematic diagram of the end plate structure provided in some embodiments of this application;

[0052] Figure 13 A schematic flowchart illustrating a battery manufacturing method provided in some embodiments of this application;

[0053] Figure 14 A schematic block diagram of a battery manufacturing apparatus provided for some embodiments of this application;

[0054] The accompanying drawings are not drawn to scale.

[0055] Marking Explanation: 1000 - Vehicle; 100 - Battery; 10 - Battery Cell Pack; 11 - Battery Cell; 20 - Housing; 21 - Side Wall; 211 - Receptacle; 212 - Exhaust Port; 22 - Top Wall; 23 - Bottom Wall; 231 - Through Hole; 232 - Through Slot; 30 - End Plate; 31 - End Plate Body; 311 - First Surface; 312 - Second Surface; 32 - First Reinforcing Rib; 321 - Top Reinforcing Rib; 3211 - First Opening; 322 - Middle Reinforcing Rib; 3221 - Second Opening; 323 - Bottom Reinforcing Rib; 324 - Clearance Opening; 33 - Second Reinforcing Rib; 34 - Channel; 35 - Flow Guide 351-Vertical channel; 352-Horizontal channel; 40-Power lead-out component; 41-First section; 42-Second section; 43-Third section; 44-Bending angle; 50-Sampling unit; 51-Sampling unit body; 52-Shielding part; 60-Insulating component; 70-Output pole; 80-High voltage distribution box; 90-Pressure relief mechanism; 200-Controller; 300-Motor; 2000-Manufacturing equipment; 2100-First supply device; 2200-Second supply device; 2300-Third supply device; 2400-First assembly device; 2500-Second assembly device; 2600-Third assembly device. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] 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.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0060] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0061] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0062] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0063] 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," and "circumferential" 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 are not intended to 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.

[0064] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "set," "install," "connect," "join," and "fix" 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, an electrical connection, or a signal 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0065] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0066] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0067] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. The battery may include a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0068] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated negative current collector protrudes beyond the coated one, serving as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be a wound structure or a stacked structure, and the embodiments of this application are not limited to these.

[0069] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used 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 power battery applications, market demand is also constantly increasing.

[0070] In existing battery technology, an expansion beam is typically installed at the front of the battery casing to support the end plate. Sufficient space needs to be reserved between the expansion beam and the battery casing frame to form the installation area for the battery's output components. This structure results in low battery space utilization, severely impacting the improvement of battery energy density.

[0071] Based on the above problems, in order to improve the energy density of the battery, the applicant provides a battery comprising a casing, a battery cell assembly, an end plate, power lead-out components, and / or sampling units. The power lead-out components are embedded in the end plate, that is, the battery lead-out units are embedded in the end plate. This eliminates the need to reserve wiring space for the battery lead-out units between the end plate and the casing wall, which is beneficial to improving the space utilization of the battery and thus increasing the energy density of the battery. In addition, the power lead-out components and / or sampling units are integrated into the end plate, so that the end plate limits and secures the power lead-out components and / or sampling units, effectively improving the connection stability of the power lead-out components and sampling units, reducing the risk of connection interruption due to shaking, vibration, etc., thereby reducing the risk of short circuits and fires caused by broken power lead-out components, which is beneficial to improving the stability of battery performance.

[0072] The batteries disclosed in this application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft. The power system of such electrical equipment can be composed using the batteries disclosed in this application, which can effectively improve the battery's lifespan and performance.

[0073] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0074] The batteries described in the embodiments of this application are not limited to the electrical devices described above, but can also be applied to all electrical devices that use batteries. However, for the sake of brevity, the following embodiments use a vehicle as an example of an electrical device according to an embodiment of this application.

[0075] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0076] In some other embodiments, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0077] In this application, the battery mentioned in the embodiments refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. Multiple battery cells can be connected in series, parallel, or a combination thereof to directly form a battery. A combination thereof means that multiple battery cells are connected in both series and parallel configurations. Alternatively, multiple battery cells can first be connected in series, parallel, or a combination thereof to form a battery cell group, and then multiple battery cell groups can be connected in series, parallel, or a combination thereof to form a battery.

[0078] Please refer to Figure 2 and Figure 3 and further refer to Figure 4 and Figure 5 , Figure 2 Exploded views of a battery from a first-view perspective, provided for some embodiments of this application. Figure 3 Exploded views of a battery from a second perspective, provided in some embodiments of this application. Figure 4 for Figure 2 A magnified view of part A shown below. Figure 5 for Figure 3 The diagram shows a partial enlarged view of part B. Some embodiments of this application provide a battery 100, which includes a housing 20, a battery cell pack 10, an end plate 30, a power lead-out component 40, and / or a sampling unit 50. The housing 20 includes a sidewall 21 for enclosing and forming a receiving cavity 211. The battery cell pack 10 is disposed within the receiving cavity 211 and includes multiple battery cells 11 arranged in a stacked manner. The end plate 30 is disposed within the receiving cavity 211 and located between the battery cell pack 10 and the sidewall 21. The power lead-out component 40 is used to lead out the electrical energy from the battery cell pack 10. The power lead-out component 40 includes a first segment 41, a second segment 42, and a third segment 43 connected sequentially. The second segment 42 is embedded in the end plate 30, and the first segment 41 and the third segment 43 extend from the end plate 30. The first segment 41 is electrically connected to the battery cell pack 10.

[0079] The sampling unit 50 is used to collect signals from the battery cell pack 10. The sampling unit 50 passes through the end plate 30, and one end of the sampling unit 50 is connected to the battery cell pack 10.

[0080] The housing 20 provides a space for the battery cell pack 10, serving to store and protect it. The housing 20 can be a cuboid, cylinder, or elliptical cylinder, etc. The housing 20 includes sidewalls 21 that enclose and form a cavity 211. The sidewalls 21 can have various structures depending on the shape of the housing 20; for example, please refer to... Figure 2 , Figure 2 The exploded view of the battery 100 provided in some embodiments of this application shows that the housing 20 may include a top wall 22, a side wall 21 and a bottom wall 23. The top wall 22 and the bottom wall 23 are disposed opposite to each other. The side wall 21 surrounds the bottom wall 23 and is a hollow structure with openings at both ends. The inner cavity of the side wall 21 forms a receiving cavity 211. The side wall 21 connects the top wall 22 and the bottom wall 23. The side wall 21, the top wall 22 and the bottom wall 23 together define a receiving space that can accommodate the battery cell pack 10.

[0081] In some embodiments, the top wall 22 and the side wall 21 can be integrally formed to form a housing, one end of which has an opening. The bottom wall 23 is separately disposed from the side wall 21, and the bottom wall 23 forms a cover structure. The bottom wall 23 covers the opening of the housing to enclose the battery cell pack 10 inside the housing.

[0082] In other embodiments, the bottom wall 23 and the side wall 21 may be integrally formed to form a housing, with an opening at one end of the housing. The top wall 22 and the side wall 21 may be separately provided, with the top wall 22 forming a cover structure. The top wall 22 covers the opening of the housing to enclose the battery cell pack 10 inside the housing.

[0083] For example, such as Figure 2 As shown, the housing 20 may include a separate top wall 22, a bottom wall 23 and a side wall 21. The side wall 21 forms a shell with openings at both ends. The bottom wall 23 and the top wall 22 respectively cover the two openings of the shell to form a closed space for accommodating the battery cell pack 10.

[0084] The shell formed by the side walls 21 can be rectangular, square, or other shapes, and the box 20 can be made of metal materials, such as aluminum, aluminum alloy, or nickel-plated steel. In some embodiments of this application, the box 20 can be hexahedral, and the top wall 22 and bottom wall 23 can be square or rectangular plate structures.

[0085] Specifically, the width of the housing 20 extends along the first direction X, the length extends along the second direction Y, and the height extends along the third direction Z. Along the third direction Z, the top wall 22 is located above the side wall 21, and the bottom wall 23 is located below the side wall 21.

[0086] The battery cell group 10 is disposed within the accommodating cavity 211. The battery cell group 10 comprises multiple battery cells 11, which can be connected in series, parallel, or a combination thereof (a combination means that multiple battery cells 11 are connected in both series and parallel) to form the battery cell group 10. The battery cell group 10 is disposed within the accommodating cavity 211 of the housing 20. Alternatively, the battery 100 may also comprise multiple battery cell groups 10, which can then be connected in series, parallel, or a combination thereof to form the battery 100. In other words, the accommodating cavity 211 can contain a single battery cell group 10 or multiple battery cell groups 10. Each battery cell 11 can be a secondary battery 100 or a primary battery 100; it can also be a lithium-sulfur battery 100, a sodium-ion battery 100, or a magnesium-ion battery 100, but is not limited to these. The battery cell 11 can be cylindrical, flat, cuboid, or other shapes.

[0087] The end plate 30 is used as a limiting component and fastener for the battery cell group 10, so as to fasten and limit the multiple battery cells 11 of the battery cell group 10, and to restrict the movement of the battery cell group 10 within the housing 20.

[0088] The end plate 30 can be made of plastic materials such as nylon, nylon and fiberglass, or conventional metal materials such as aluminum and aluminum alloy. The end plate 30 can be an injection molded part or a die-cast part.

[0089] In some embodiments of this application, a plurality of battery cells 11 of the battery cell pack 10 are arranged along the length direction (second direction Y) of the housing 20, and end plates 30 are disposed at both ends of the battery cell pack 10 along the second direction Y and located between the battery cell pack 10 and the side wall 21.

[0090] The power lead-out component 40 is used to lead out the power of the battery cell pack 10. It is understood that the power lead-out component 40 should be conductive, and the material of the power lead-out component 40 can be a metal material with good conductivity.

[0091] The "second segment 42 of the power lead-out component 40 is embedded in the end plate 30" can be implemented in various ways. For example, the power lead-out component 40 can be integrally formed with the end plate 30, or the power lead-out component 40 can be detachably assembled to the end plate 30. The detachable nature of the end plate 30 and the power lead-out component 40 can also be varied, such as: the end plate 30 can be provided with a slot, into which the power lead-out component 40 snaps into and engages with the end plate 30; the power lead-out component 40 can be bonded to the end plate 30 with adhesive; or the power lead-out component 40 can be fixed to the end plate 30 with fasteners, etc.

[0092] This application does not limit the number of power lead-out components 40. One power lead-out component 40 or multiple power lead-out components 40 can be embedded on an end plate 30.

[0093] The sampling unit 50 is used to collect signals from the battery cell group 10, including but not limited to the collection of voltage signals, temperature signals and other signals from the battery cell group 10. The sampling unit 50 can be connected to the control system of the battery 100, so that the control system of the battery 100 can collect and monitor information such as voltage and temperature of the battery 100.

[0094] It is understandable that there are multiple ways to implement the sampling unit 50 through the end plate 30. The sampling unit 50 and the end plate 30 can be movably coupled or fixed in relative position. Specifically, the sampling unit 50 can be integrally formed with the end plate 30, or it can be separately set from the end plate 30 and fixed to the end plate 30 by means of snap-fit, screw-fit, adhesive, etc., or a channel 34 is provided in the end plate 30 for the sampling unit 50 to pass through, so that the sampling unit 50 passes through the end plate 30 through the channel 34.

[0095] Similarly, this application embodiment does not limit the type and number of sampling units 50. The battery 100 may include one sampling unit 50 passing through the end plate 30, or it may include multiple sampling units 50 passing through the end plate 30.

[0096] The power lead-out component 40 of the battery 100 is embedded in the end plate 30, and the sampling unit 50 passes through the end plate 30. This eliminates the need for pre-reserved wiring space for the power lead-out component 40 and the sampling unit 50 between the end plate 30 and the wall of the housing 20, which improves the space utilization of the battery 100 and thus increases its energy density. In addition, the integration of the power lead-out component 40 and / or the sampling unit 50 into the end plate 30 allows the end plate 30 to limit and secure the power lead-out component 40 and / or the sampling unit 50, effectively improving the connection stability of the power lead-out component 40 and the sampling unit 50. This reduces the risk of connection interruption due to shaking, vibration, etc., thereby reducing the risk of short circuits and fires caused by the breakage of the power lead-out component 40 connection and improving the stability of the battery 100's performance.

[0097] The first section 41 and the third section 43 of the power lead-out component 40 extend from the end plate 30 to form free connection ends. The direction of the first section 41 and the third section 43 extending from the end plate 30 can be flexibly set according to the overall structure of the battery 100. For example, the extension position of the first section 41 can be close to the power output part of the battery cell group 10, and the extension position of the third section 43 can be close to the channel 34 on the housing 20 that communicates with the outside of the battery 100.

[0098] In some embodiments, a first segment 41 extends from the top of the end plate 30 to be electrically connected to the battery cell pack 10, and a third segment 43 extends from the bottom of the end plate 30.

[0099] In a conventional battery 100, for ease of assembly and maintenance, the busbar of the battery cell group 10 is located at the top of the overall battery 100 structure. The first segment 41 of the power lead-out component 40 of this application extends from the top of the end plate 30, which facilitates shortening the connection path for electrical connection with the battery cell group 10. In the assembly process of the battery 100 in the prior art, the end plate 30 needs to be moved downwards and installed into the housing 20. The first segment 41 and the third segment 43 extend from the top and bottom of the end plate 30, respectively, which can effectively avoid interference with the assembly of the end plate 30 and avoid the power lead-out component 40 occupying space inside the battery 100 housing.

[0100] Understandably, in order to draw the electrical energy of the battery cell pack 10 out of the battery 100, the third section 43 of the power lead-out component 40 extends from the bottom of the end plate 30 and can pass through the housing 20 to draw the electrical energy of the battery cell pack 10 out of the battery 100.

[0101] In some embodiments, please refer to Figure 2 and Figure 5 The enclosure 20 also includes a bottom wall 23, and side walls 21 surround the bottom wall 23. The bottom wall 23 is provided with a through hole 231, and a third section 43 extends out from the through hole 231 to lead electrical energy to the outside of the enclosure 20.

[0102] The shape of the through hole 231 can be set to match the cross-section of the third segment 43. The through hole 231 can be clearance fit with the third segment 43 or interference fit with the third segment 43. When the third segment 43 is interference fit with the through hole 231, the through hole 231 plays a limiting and fixing role on the third segment 43, further improving the connection stability of the power lead-out component 40.

[0103] It is understandable that the power lead 40 has conductive properties. When the power lead 40 is interference-fitted with the through hole 231, the hole wall of the through hole 231 can be made of insulating material so that the power lead 40 is insulated from the housing 20.

[0104] The third section 43 extends from the through hole 231 in the bottom wall 23 of the housing 20, facilitating the extraction of electrical energy from the battery 100 to the outside of the housing 20 to power electrical devices. The through hole 231 in the bottom wall 23 of the housing 20 facilitates the insertion of the power extraction component 40, improving the ease of battery 100 assembly.

[0105] In some embodiments, please continue to refer to Figure 5 The battery 100 also includes an insulating member 60, which is disposed between the hole wall of the through hole 231 and the power lead-out member 40, for insulating and isolating the hole wall of the through hole 231 and the power lead-out member 40.

[0106] Because the third segment 43 of the power lead-out component 40 passes through the through hole 231 and exits the housing 20, the insulating component 60 is disposed between the hole wall of the through hole 231 and the third segment 43 of the power lead-out component 40. The insulating component 60 achieves the purpose of insulating the power lead-out component 40 from the housing 20 by limiting the contact between the power lead-out component 40 and the hole wall of the through hole 231.

[0107] There are various implementation structures for the insulating member 60. For example, the insulating member 60 can be an independent structure. The insulating member 60 can be formed on the outer peripheral surface of the third segment 43 of the power lead-out member 40 and protrude from the outer peripheral surface of the third segment 43 of the power lead-out member 40. The relative position of the insulating member 60 and the power lead-out member 40 is fixed. After the third segment 43 of the power lead-out member 40 passes through the through hole 231, the insulating member 60 passes through the through hole 231 and isolates the power lead-out member 40 and the hole wall of the through hole 231.

[0108] In some other embodiments, the insulating element 60 may also be formed on the hole wall. For example, the insulating element 60 may be an annular structure. The insulating element 60 passes through the through hole 231 and is fixedly connected to the housing 20. The outer peripheral wall of the insulating element 60 abuts against the inner peripheral wall of the through hole 231. The power lead-out element 40 passes through the inner cavity of the insulating element 60. The peripheral wall of the insulating element 60 isolates the power lead-out element 40 from the hole wall of the through hole 231.

[0109] The insulating component 60 can be made of any one or more conventional insulating materials, such as plastic, rubber, ceramics, etc.

[0110] In some embodiments, the gap between the power lead-out member 40 and the through hole 231 can be sealed by the insulating member 60. For example, when the insulating member 60 is formed on the outer peripheral surface of the power lead-out member 40, the outer peripheral surface of the power lead-out member 40 can be interference-fitted with the hole wall of the through hole 231, so that the insulating member 60 can simultaneously seal the gap between the power lead-out member 40 and the through hole 231 while isolating the power lead-out member 40 and the through hole 231. This structure can prevent impurities from entering the battery 100 housing 20 through the gap between the through hole 231 and the power lead-out member 40, and can also prevent the high temperature and high pressure gas generated in the housing 20 from flowing out of the battery 100 housing 20 along the power lead-out member 40 through the through hole 231.

[0111] The insulating component 60 and the through hole 231 can be either clearance fit or interference fit. When the insulating component 60 and the through hole 231 are interference fit, not only can the relative positions of the power lead-out component 40 and the housing 20 be fixed, but the gap between the power lead-out component 40 and the through hole 231 can also be sealed.

[0112] An insulating component 60 is provided between the wall of the through hole 231 of the enclosure 20 and the power lead-out component 40 to form an insulating protection between the enclosure 20 and the power lead-out component 40, thereby preventing short circuit between the power lead-out component 40 and the enclosure 20, ensuring the insulation of the enclosure 20, and reducing the risk of leakage of the enclosure 20.

[0113] In some embodiments, please refer to Figure 4 The insulating component 60 and the end plate 30 are integrally formed.

[0114] It is understandable that the insulating component 60 is disposed between the hole wall of the through hole 231 and the power lead-out component 40. The insulating component 60 is integrally formed with the end plate 30, so the third section 43 of the power lead-out component 40 passes through the insulating component 60.

[0115] The integral molding of the insulating component 60 with the end plate 30 improves the ease of battery 100 assembly. Compared to a separate insulating component 60, the integral molding of the insulating component 60 with the end plate 30 provides higher error prevention, effectively preventing the risk of omitting the insulating component 60 due to missed assembly steps during battery 100 assembly. This simplifies the assembly process and reduces assembly defect and rework rates. Furthermore, the integral molding of the insulating component 60 with the end plate 30 reinforces and provides comprehensive insulation protection for the power lead-out component 40, resulting in high insulation reliability.

[0116] In some embodiments, please refer to Figure 6 , Figure 6 The image shows an isometric view of the end plate 30 provided in some embodiments of this application, wherein the end plate 30 and the power lead-out member 40 are injection molded as a single unit.

[0117] It is understood that the power lead-out component 40 includes a first segment 41, a second end and a third segment 43 connected in sequence. The second segment 42 is embedded in the end plate 30. In this embodiment, the end plate 30 and the power lead-out component 40 are injection molded as one piece, which means that the second segment 42 of the power lead-out component 40 and the end plate 30 are injection molded as one piece.

[0118] Specifically, the end plate 30 should include an injection-molded portion, which encloses the second segment 42 of the power lead-out component 40, so that the end plate 30 and the second segment 42 are injection molded as a single unit. The overall structure of the end plate 30 can be entirely injection molded, or it can be integrally molded from a metal part and the injection-molded portion, with the plastic portion of the end plate 30 enclosing the second segment 42.

[0119] The power lead 40 is conductive. Injection molding the power lead 40 and end plate 30 together allows the injection-molded portion of the end plate 30 to directly insulate and protect the power lead 40, preventing short circuits. Furthermore, the end plate 30 provides a secure limit to the power lead 40, further improving the stability of the connection. Simultaneously, the integral injection molding seals the connection between the power lead 40 and the end plate 30. When high-temperature, high-pressure gas is generated inside the battery 100, the gas cannot directly impact the power lead 40, effectively preventing the risk of short circuits and fires caused by the melting of the power lead 40 by the high-temperature, high-pressure gas. This improves the safety performance of the battery 100.

[0120] In some embodiments, please refer to Figure 8 , Figure 8 The above is a schematic diagram of the state of the sampling unit 50 passing through the end plate 30 provided in some embodiments of this application. The power lead 40 is detachably connected to the end plate 30. In the extension direction of the power lead 40, the power lead 40 is bent at least twice.

[0121] As mentioned above, there are several ways to detach the end plate 30 and the power lead-out component 40. For example, the end plate 30 can be provided with a slot, and the power lead-out component 40 can be inserted into the slot and connected to the end plate 30; the power lead-out component 40 can be glued to the end plate 30 with adhesive; the power lead-out component 40 can be fixed to the end plate 30 with fasteners, etc.

[0122] Since the power lead-out component 40 is detachably connected to the end plate 30, there must be a gap at the connection between the power lead-out component 40 and the end plate 30. When high-temperature and high-pressure gas is generated inside the battery 100, the high-temperature and high-pressure gas may flow through the gap between the end plate 30 and the power lead-out component 40 along the power lead-out component 40, which poses a risk of melting the power lead-out component 40 and has a significant safety hazard.

[0123] In this embodiment, the power lead-out member 40 is bent at least twice, so that the extension direction of the power lead-out member 40 is changed at least twice. By changing the extension direction of the power lead-out member 40, the risk of gas flowing along the power lead-out member 40 is effectively reduced.

[0124] The power lead-out component 40 can be bent multiple times, that is, two, three, four, or even more times. For an example, please refer to... Figure 7 The power lead-out component is bent twice at 40 degrees.

[0125] The power lead 40 is detachably connected to the end plate 30. The end plate 30 and the power lead 40 can be manufactured separately and then assembled, which helps to reduce the difficulty of the process and the production cost. The structure of the power lead 40 being bent at least twice gives it at least two bending angles 44, which changes the extension direction of the power lead 40 twice. When high-temperature and high-pressure gas is generated inside the battery 100, the bending of the power lead 40 helps to increase the gas flow resistance and prevent the gas from flowing along the gap between the power lead 40 and the end plate 30. This effectively avoids the risk of the high-temperature and high-pressure gas melting the power lead 40 and causing a short circuit or fire in the battery 100, thus improving the safety performance of the battery 100.

[0126] In some embodiments, the bending angle 44 of the power lead-out component 40 is 40° to 130°. That is, the power lead-out component 40 is bent to form a bending angle 44, and the bending angle 44 is 40° to 130°. In some embodiments, the bending angle 44 of the power lead-out component 40 is 75° to 100°.

[0127] For example, such as Figure 7 As shown, the bending angle of the power lead-out component 40 is 44 degrees, which is 90°.

[0128] In battery 100, conductive metal is generally used as the power lead 40. If the bending angle of 44 degrees is too small, it can easily affect the structural strength of the power lead 40, posing a risk of breakage. If the bending angle of 44 degrees is too large, it will not effectively impede airflow. In this embodiment, the bending angle of 44 degrees of the power lead 40 is controlled between 40° and 130°, which is beneficial for ensuring the structural strength of the power lead 40 while providing good impediment to high-temperature and high-pressure gases. Controlling the bending angle of 44 degrees of the power lead 40 between 75° and 100° can further improve the impediment effect to high-temperature and high-pressure gases.

[0129] In some embodiments, please continue to refer to Figure 6 and Figure 7 The end plate 30 includes an end plate body 31 and a plurality of first reinforcing ribs 32. The end plate body 31 has a first surface 311 facing the battery cell assembly 10 and a second surface 312 facing away from the battery cell assembly 10. The first surface 311 abuts against the battery cell assembly 10. The plurality of first reinforcing ribs 32 are formed on the second surface 312 and abut against the side wall 21. The plurality of first reinforcing ribs 32 are spaced apart in the vertical direction. The second segment 42 passes through the plurality of first reinforcing ribs 32.

[0130] The function of the first reinforcing rib 32 is to improve the structural strength of the end plate body 31. The first reinforcing rib 32 can be a strip-like structure or a plate-like structure, and can be a planar structure or a curved structure. For example, Figure 6 As shown, the first reinforcing rib 32 has a planar plate-like structure. The first reinforcing rib 32 and the end plate body 31 can be integrally formed, or they can be assembled by welding, screwing, or other methods.

[0131] In some embodiments, the end plate 30 may further include a plurality of second reinforcing ribs 33, which are formed on the second surface 312 and abut against the side wall 21. The plurality of second reinforcing ribs 33 are intersected with the plurality of first reinforcing ribs 32, and each second reinforcing rib 33 extends in the vertical direction.

[0132] Similar to the first reinforcing rib 32, the second reinforcing rib 33 can be a strip-like structure or a plate-like structure; it can be a planar structure or a curved structure, for example, as shown in... Figure 6 and Figure 7 As shown, based on the first reinforcing rib 32 being a planar plate-shaped embodiment, the second reinforcing rib 33 is also a planar plate-shaped structure.

[0133] The end plate 30 includes a first reinforcing rib 32 and a second reinforcing rib 33 that is offset from the first reinforcing rib 32. The first reinforcing rib 32 and the second reinforcing rib 33 form a mesh structure, which is beneficial to further improve the structural strength of the end plate 30.

[0134] It is understandable that since the second segment 42 passes through multiple first reinforcing ribs 32, the multiple first reinforcing ribs 32 must be made of insulating material at least at the points where they contact the second segment 42, in order to ensure the insulation between the power lead-out component 40 and the end plate 30. In order to simplify the manufacturing process, the first reinforcing ribs 32 can all be made of insulating material, or even the first reinforcing ribs 32 and the end plate body 31 can both be made of insulating material.

[0135] Based on the implementation of "the end plate 30 and the power lead-out component 40 are injection molded into one piece", the power lead-out component 40 can be integrally molded with multiple first reinforcing ribs 32.

[0136] Based on the embodiment in which "the power lead-out member 40 is detachably connected to the end plate 30", the power lead-out member 40 can be detachably connected to a plurality of first reinforcing ribs 32.

[0137] The end plate 30 includes an end plate body 31 and reinforcing ribs formed on the end plate body 31. The reinforcing ribs effectively improve the structural strength of the end plate 30 and enhance its resistance to deformation. Furthermore, compared to increasing the overall thickness of the end plate 30 to increase its strength, the reinforcing ribs reduce the overall weight and material loss of the end plate 30 while maintaining its structural strength, which helps to reduce the weight and material cost of the battery 100.

[0138] Furthermore, the power lead-out component 40 passes through multiple first reinforcing ribs 32, which helps to reduce the difficulty of assembling the power lead-out component 40 and the end plate 30. In the implementation mode of "power lead-out component 40 being detachably mounted on end plate 30", the multiple first reinforcing ribs 32 form multiple limiting parts for the power lead-out component 40, which facilitates the fixing and bending of the power lead-out component 40. At the same time, the power lead-out component 40 passes through multiple first reinforcing ribs 32, which makes it easy to observe the state of the power lead-out component 40 on the end plate 30 and facilitates maintenance.

[0139] In some embodiments, please refer to Figure 7 , Figure 7 The second-view axonometric view of the end plate 30 provided in some embodiments of this application shows that the power lead-out member 40 is detachably disposed on the end plate 30, and each first reinforcing rib 32 is provided with a clearance opening 324 for avoiding the power lead-out member 40.

[0140] Each first reinforcing rib 32 has a clearance opening 324 for avoiding the power lead-out component 40. During assembly, the power lead-out component 40 can be assembled onto the end plate 30 by passing through the clearance opening 324 of each first reinforcing rib 32 in sequence, which helps to reduce the difficulty of assembly. In addition, the clearance opening 324 can be staggered to give the power lead-out component 40 a bending angle, which is convenient to implement and highly practical.

[0141] In some other embodiments, the power lead-out member 40 can also penetrate the end plate 30 through the mounting channel provided on the first reinforcing rib 32. Specifically, each first reinforcing rib 32 can be provided with an opening, and multiple openings are interconnected to form a mounting channel that penetrates multiple first reinforcing ribs 32. The second segment 42 of the power lead-out member 40 passes through the mounting channel, thereby allowing the power lead-out member 40 to penetrate the end plate 30.

[0142] In some embodiments, the power lead-out member 40 may include a power lead-out member 40 body and a flange formed on the outer peripheral surface of the power lead-out member 40 body and protruding from the outer peripheral surface of the body. When the second segment 42 is inserted into the mounting channel, the flange is used to cover the gap between the opening and the power lead-out member. The flange provides a limiting function for the position of the power lead-out member 40 in the mounting channel. At the same time, the flange can also prevent the high-temperature and high-pressure gas in the battery 100 from flowing along the mounting channel, thus preventing the high-temperature and high-pressure gas from damaging the power lead-out member 40.

[0143] In some embodiments, the battery 100 may further include an output electrode 70, one end of which is electrically connected to the battery cell group 10 for outputting the electrical energy of the battery cell group 10, and the other end of which is electrically connected to the first segment 41.

[0144] The output terminal 70 can be located on the end plate 30, or it can be located in other structures within the battery 100, for example, such as... Figure 6 and Figure 7 As shown, the output pole 70 is located on the top reinforcing rib 321, and the connection between the first section 41 of the power lead-out component 40 and the output pole 70 can be achieved by screwing, welding, or other methods.

[0145] The battery 100 is equipped with an output terminal 70, which connects the battery cell group 10 and the power lead 40. This helps to improve the modularity of the battery 100 and facilitates the maintenance of the battery 100.

[0146] In some embodiments, please refer again Figure 2 and Figure 3 The battery 100 may also include a high-voltage distribution box 80, which is located outside the housing 20, with the third section 43 extending out of the housing 20 to connect to the high-voltage distribution box 80.

[0147] It is understood that the high-voltage distribution box 80 can be fixed to the outer wall of the enclosure 20 by means of screwing, riveting, welding, etc. In some embodiments, the high-voltage distribution box 80 can be sealed to the bottom wall 23 of the enclosure 20, and the inner cavity of the high-voltage distribution box 80 is connected to the through hole 231 on the bottom wall 23 of the enclosure 20. The power lead-out component 40 extends out of the enclosure 20 through the through hole 231 and directly enters the inner cavity of the high-voltage distribution box 80, thereby ensuring the sealing of the enclosure 20.

[0148] The third section 43 of the power lead-out component 40 extends out of the housing 20 and connects to the high-voltage distribution box 80. During the charging and discharging process of the battery 100, the high-voltage distribution box 80 plays a role in protecting the power battery 100 system and power transmission and distribution.

[0149] In some embodiments, please refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram showing the state of the sampling unit 50 penetrating the end plate 30 according to some embodiments of this application. Figure 9 for Figure 8 The diagram shows the mating structure of the sampling unit 50 through the end plate 30. The end plate 30 is provided with a channel 34 through which the sampling unit 50 passes, and the channel 34 extends from the top to the bottom of the end plate 30.

[0150] The end plate 30 is provided with a channel 34. The sampling unit 50 can be confined to the end plate 30 by passing through the channel 34. The sampling unit 50 can be easily and quickly integrated into the end plate 30 without changing the structure of the sampling unit 50. The operation is simple and feasible, and it is easy to add, remove or adjust the sampling unit 50, making it highly practical.

[0151] In some embodiments, one end of the sampling unit 50 extends from the top of the end plate 30 to connect with the battery cell group 10, and the other end of the sampling unit 50 extends from the bottom of the end plate 30 and passes through the housing 20 to lead the signal out to the outside of the housing 20.

[0152] Based on the implementation of "end plate 30 including end plate body 31 and multiple first reinforcing ribs 32", channel 34 can pass through multiple first reinforcing ribs 32, so that one end of sampling unit 50 extends from top reinforcing rib 321 to connect with battery cell group 10, and the other end of sampling unit 50 extends from bottom reinforcing rib 323 and passes through housing 20 to lead the signal to the outside of housing 20.

[0153] Meanwhile, the other end of the sampling unit 50 extends out of the housing 20 and can be directly connected to the control system of the power device, or it can be connected to a separate control system set up for the battery 100.

[0154] Understandably, please refer to this again. Figure 5 A through groove 232 can be provided on the bottom wall 23 of the housing 20 for the sampling unit 50 to pass through, and the other end of the sampling unit 50 passes through the through groove 232 and out of the bottom wall 23 of the housing 20.

[0155] In some embodiments, based on the implementation form that "the battery 100 includes a high-voltage distribution box 80, the high-voltage distribution box 80 is disposed outside the housing 20, and the third segment 43 extends out of the housing 20 to connect with the high-voltage distribution box 80", the control system of the battery 100 can be integrated into the housing of the high-voltage distribution box 80. That is, the third segment 43 of the power lead-out component 40 and one end of the sampling unit 50 are both connected to the housing of the high-voltage distribution box 80 after passing through the housing 20.

[0156] Similarly, the high-voltage distribution box 80 can be sealed to the bottom wall 23 of the enclosure 20. The inner cavity of the high-voltage distribution box 80 can be connected to the through groove 232 on the bottom wall 23 of the enclosure 20 through which the sampling unit 50 passes. After the sampling unit 50 extends out of the enclosure 20 through the through groove 232, it directly enters the inner cavity of the high-voltage distribution box 80, thereby ensuring the sealing of the enclosure 20.

[0157] In some embodiments, an insulating structure may also be provided between the sampling unit 50 and the groove wall of the through slot 232 of the housing 20, similar to the insulating member 60 between the power lead-out member 40 and the through hole 231. The insulating structure of the sampling unit 50 may be fixed to the sampling unit 50 or may cover the groove wall of the through slot 232. The insulating structure and material of the sampling unit 50 may refer to the implementation structure of the insulating member 60 of the power lead-out member 40, and will not be described in detail here.

[0158] In some embodiments, a sealing element may be provided at the connection between the sampling unit 50 and the housing 20 to achieve a sealed connection between the sampling unit 50 and the housing 20.

[0159] In some embodiments, the sampling unit 50 includes a sampling unit body 51 and a blocking portion 52. The blocking portion 52 is formed on the outer peripheral surface of the sampling unit body 51 and protrudes from the outer peripheral surface of the sampling unit body 51. The blocking portion 52 is used to cover the gap between the sampling unit body 51 and the inner wall of the channel 34.

[0160] For example, such as Figure 8 and Figure 9 As shown, one end of the sampling unit 50 extends from the top reinforcing rib 321 to connect with the battery cell assembly 10. The shielding part 52 is located above the top reinforcing rib 321. After the sampling unit 50 passes through multiple first reinforcing ribs 32, the shielding part 52 covers the gap between the sampling unit body 51 and the top reinforcing rib 321.

[0161] When high-temperature and high-pressure gas is generated inside the battery 100, the shielding part 52 can effectively prevent the gas from flowing along the gap between the sampling unit 50 and the end plate 30, thereby reducing the risk of high-temperature and high-pressure gas damaging the sampling unit 50, and preventing high-temperature and high-pressure gas from flowing through the gap between the sampling unit 50 and the end plate 30 in the housing 20, affecting the normal directional discharge of gas inside the battery 100.

[0162] Based on some embodiments of this application, please continue to refer to Figure 8 and Figure 9 and further refer to Figure 10 and Figure 11 , Figure 10 This is a partial front cross-sectional view of the battery 100 provided in some embodiments of this application. Figure 11 for Figure 10 The top view shown. The battery 100 may also include an exhaust port 212 and a flow channel 35.

[0163] Specifically, the side wall 21 of the housing 20 is provided with an exhaust port 212, and a flow guide channel 35 is provided on the end plate 30, connecting the exhaust port 212 and the accommodating cavity 211. This structure facilitates the improvement of space utilization within the battery housing 20 while ensuring the smooth flow of exhaust from the battery 100, and also provides directional guidance for the exhaust from the battery 100, thereby improving the controllability of the exhaust.

[0164] In some embodiments, the flow channel 35 may include a vertical channel 351 and a horizontal channel 352. The upper end of the vertical channel 351 is connected to the accommodating cavity 211, and one end of the horizontal channel 352 along the thickness direction of the end plate 30 is connected to the vertical channel 351, and the other end is connected to the exhaust port 212.

[0165] Since the upper end of the vertical channel 351 is connected to the accommodating cavity 211, the upper end of the end plate 30 corresponds to the direction of incoming gas when the gas is discharged from the box 20. Based on this, in the implementation of "the power lead-out component 40 is detachably installed on the end plate 30, each first reinforcing rib 32 is provided with a clearance opening 324 for avoiding the power lead-out component 40, and the power lead-out component 40 is bent at least twice in the extension direction", the clearance opening 324 of the top reinforcing rib 321 and the clearance opening 324 on the middle reinforcing rib 322 adjacent to the top reinforcing rib 321 can be staggered so that the power lead-out component 40 bends when passing through the top reinforcing rib 321, which facilitates blocking the gas from the upstream of the gas flow.

[0166] Based on the implementation mode of "end plate 30 includes end plate body 31 and multiple first reinforcing ribs 32, end plate body 31 has a first surface 311 facing the battery cell group 10 and a second surface 312 facing away from the battery cell group 10, the first surface 311 abuts against the battery cell group 10, multiple first reinforcing ribs 32 are formed on the second surface 312 and abut against the side wall 21, and multiple first reinforcing ribs 32 are spaced apart in the vertical direction", the multiple first reinforcing ribs 32 may include top reinforcing rib 321, middle reinforcing rib and bottom reinforcing rib 323, vertical channel 351 can penetrate at least the top reinforcing rib 321 in the vertical direction, horizontal channel 352 is formed between two adjacent first reinforcing ribs 32, the upper end of vertical channel 351 is connected to the exhaust gap, and horizontal channel 352 connects vertical channel 351 and exhaust port 212.

[0167] The phrase "vertical channel 351 at least penetrates the top reinforcing rib 321, and transverse channel 352 is formed between two adjacent first reinforcing ribs 32" indicates that the flow channel 35 can have various implementation structures. Specifically, the vertical channel 351 can penetrate only the top reinforcing rib 321, thus forming a transverse channel 352 between the top reinforcing rib 321 and the adjacent middle reinforcing rib 322; the vertical channel 351 can penetrate the top reinforcing rib 321 and some of the sequentially adjacent middle reinforcing ribs 322, thus forming a transverse channel 352 between any two first reinforcing ribs 321 and middle reinforcing ribs 322 connected to the vertical channel 351; or the vertical channel 351 can penetrate the top reinforcing rib 321 and all middle reinforcing ribs 322, thus forming a transverse channel 352 between any two adjacent first reinforcing ribs 321 and bottom reinforcing rib 323.

[0168] For example, if the vertical channel 351 passes through the top reinforcing rib 321 and all the middle reinforcing ribs 322, then a transverse channel 352 is formed between any two adjacent first reinforcing ribs 32 between the top reinforcing rib 321 and the bottom reinforcing rib 323.

[0169] In some embodiments, such as Figure 9 and Figure 10 As shown, the top reinforcing rib 321 is provided with a first opening 3211, and the middle reinforcing rib 322 is provided with a second opening 3221. The first opening 3211 and the second opening 3221 are connected to each other to form a vertical channel 351. The area of ​​the first opening 3211 is larger than the area of ​​the second opening 3221.

[0170] The shapes of the first opening 3211 and the second opening 3221 can be varied, such as rectangular, circular, elliptical, etc. The shapes of the first opening 3211 and the second opening 3221 can be the same or different. In the vertical direction, the projection of the second opening 3221 can fall completely into the projection of the first opening 3211, or the projection of the second opening 3221 can fall partially into the projection of the first opening 3211.

[0171] For example, please refer to Figure 9 The first opening 3211 and the second opening 3221 are both rectangular, and the projection of the second opening 3221 falls completely into the projection of the first opening 3211.

[0172] The top reinforcing rib 321 has a large first opening 3211, which can collect airflow and guide the gas to quickly enter the vertical channel 351.

[0173] Based on the implementation form that "the end plate 30 also includes a plurality of second reinforcing ribs 33, which are formed on the second surface 312 and abut against the side wall 21, and the plurality of second reinforcing ribs 33 are intersected with the plurality of first reinforcing ribs 32, and each second reinforcing rib 33 extends in the vertical direction", the vertical channel 351 can be located between any two adjacent second reinforcing ribs 33, or it can span one or more second reinforcing ribs 33.

[0174] In some embodiments, such as Figure 9 As shown, the vertical channel 351 is located between two adjacent second reinforcing ribs 33.

[0175] The vertical channel 351 is set between two adjacent second reinforcing ribs 33. The two adjacent second reinforcing ribs 33 play a role in intercepting and limiting the lateral flow of air, further improving the guiding effect of the guide channel 35 on the airflow.

[0176] In some embodiments, such as Figure 10 As shown, the battery 100 may also include a pressure relief mechanism 90, which is disposed on the side wall 21. One end of the pressure relief mechanism 90 is connected to the exhaust port 212. The pressure relief mechanism 90 is configured to release the internal pressure when the internal pressure of the battery 100 reaches a threshold.

[0177] The pressure relief mechanism 90 can adopt various implementation structures. The pressure relief mechanism 90 can be an explosion-proof valve installed on the side wall 21 and connected to the exhaust port 212, a balance valve installed on the side wall 21 and connected to the exhaust port 212, or a structurally weak area set on the side wall 21 of the housing 20. Of course, the structurally weak area can be integrally formed with the side wall 21 of the housing 20, or it can be separately set from the side wall 21 of the housing 20. For example, a separate carrier can be set, and the carrier has a structurally weak area. An installation part for the carrier is reserved on the side wall 21 of the housing 20, and the carrier carrying the weak area can be installed on the installation part of the side wall 21.

[0178] The battery 100 is equipped with a pressure relief mechanism 90 connected to the exhaust port 212. The pressure relief mechanism 90 effectively controls the discharge frequency of the battery 100. When the pressure relief mechanism 90 is in an unbraked state, it can effectively prevent dust, water stains and other impurities from entering the housing 20 through the exhaust port 212.

[0179] It is understandable that the relative positions of the power lead-out component 40, the current guiding channel 35, and the sampling unit 50 on the end plate 30 can be flexibly set according to the different connection positions of the actual battery 100.

[0180] For example, please refer to Figure 12 , Figure 12The diagram below shows the structure of the end plate 30 provided in some embodiments of this application. A flow channel 35 is provided on the same end plate 30, which passes through two sampling units 50 and has a power lead-out component 40 embedded therein. The two sampling units 50 are spaced apart and located on the end plate 30. The flow channel 35 is located between the two sampling units 50, and the power lead-out component 40 is located on one side of the two sampling units 50.

[0181] According to some embodiments of this application, please refer to Figures 2 to 11 This application provides a battery 100, which includes a housing 20, a battery cell pack 10, an end plate 30, and a power lead-out component 40. The housing 20 includes a bottom wall 23 and a side wall 21. The side wall 21 surrounds the bottom wall 23. The bottom wall 23 is provided with a through hole 231. The side wall 21 encloses and forms an accommodating cavity 211. The battery cell assembly 10 is disposed within the accommodating cavity 211 and includes multiple battery cells 11, which are stacked in layers. The end plate 30 is disposed within the accommodating cavity 211 and located between the battery cell assembly 10 and the side wall 21. The end plate 30 includes an end plate body 31 and multiple first reinforcing ribs 32. The end plate body 31 has a first surface 311 facing the battery cell assembly 10 and a second surface 312 facing away from the battery cell assembly 10. The first surface 311 abuts against the battery cell assembly 10, and the multiple first reinforcing ribs 32 are formed on the second surface 312 and abut against the side wall 21. The multiple first reinforcing ribs 32 are spaced apart in the vertical direction.

[0182] The power extraction component 40 is used to extract the power from the battery cell pack 10. The power extraction component 40 includes a first segment 41, a second segment 42, and a third segment 43 connected in sequence. The second segment 42 passes through and is integrally formed with the multiple first reinforcing ribs 32. The first segment 41 extends from the top of the multiple first reinforcing ribs 32 and is electrically connected to the battery cell pack 10. The third segment 43 extends from the bottom of the multiple first reinforcing ribs 32 and extends from the through hole 231 of the bottom wall 23 to extract the power to the outside of the housing 20.

[0183] According to some embodiments of this application, this application also provides an electrical device including a battery 100 of any of the above schemes, the battery 100 being used to provide electrical energy to the electrical device.

[0184] The electrical device can be any of the aforementioned devices or systems that use battery 100.

[0185] This application also provides a method for manufacturing a battery 100, please refer to... Figure 13 , Figure 13 This is a schematic flowchart of a method for manufacturing a battery 100 provided in some embodiments of this application. The manufacturing method includes:

[0186] S100: Provide a housing 20, the housing 20 including sidewalls 21 for enclosing and forming a receiving cavity 211;

[0187] S200: Provides a battery cell pack 10, which includes a plurality of battery cells 11, which are stacked in a layered arrangement;

[0188] S300: Provides an end plate 30 and a power lead-out component 40. The power lead-out component 40 includes a first segment 41, a second segment 42 and a third segment 43 connected in sequence. The second segment 42 is embedded in the end plate 30, and the first segment 41 and the third segment 43 extend out from the end plate 30.

[0189] S400: The battery cell pack 10, the end plate 30, and the power lead-out component 40 are disposed in the accommodating cavity 211, and the end plate 30 is located between the battery cell pack 10 and the side wall 21, and the first segment 41 is electrically connected to the battery cell pack 10.

[0190] It should be noted that the relevant structure of the battery 100 manufactured by the manufacturing method provided in the above embodiments can be found in the battery 100 provided in the foregoing embodiments, and will not be repeated here.

[0191] This application also provides a manufacturing apparatus 2000 for a battery 100, please refer to... Figure 14 , Figure 14 This is a schematic block diagram of a manufacturing apparatus 2000 for a battery 100100 provided in some embodiments of this application. The manufacturing apparatus 2000 includes a supply module and an assembly module. The assembly module may include a first supply device 2100, a second supply device 2200, and a third supply device 2300. The assembly module may include a first assembly device 2400, a second assembly device 2500, and a third assembly device 2600.

[0192] A first providing device 2100 provides a housing 20, which includes a sidewall 21 for enclosing and forming a receiving cavity 211. A second providing device 2200 provides a battery cell pack 10, which includes a plurality of battery cells 11 arranged in a stacked manner. A third providing device 2300 provides an end plate 30 and a power lead-out component 40, which includes a first segment 41, a second segment 42, and a third segment 43 connected in sequence. The second segment 42 is embedded in the end plate 30, and the first segment 41 and the third segment 43 extend out of the end plate 30. A first assembly device 2400 is used to place the battery cell pack 10 in the receiving cavity 211. A second assembly device 2500 is used to place the end plate 30 and the power lead-out component 40 in the receiving cavity 211, with the end plate 30 positioned between the battery cell pack 10 and the sidewall 21. A third assembly device 2600 is used to electrically connect the first segment 41 to the battery cell pack 10.

[0193] It should be noted that the relevant structure of the battery 100 manufactured by the manufacturing equipment 2000 provided in the above embodiments can be found in the battery 100 provided in the foregoing embodiments, and will not be repeated here.

[0194] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0195] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. 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, comprising: The enclosure includes sidewalls for enclosing and forming the receiving cavity; A battery cell assembly is disposed within the accommodating cavity and includes multiple battery cells, wherein the multiple battery cells are stacked in a layered arrangement. An end plate is disposed within the accommodating cavity and located between the battery cell assembly and the side wall; A power lead-out component for drawing power from the battery cell pack, the power lead-out component comprising a first segment, a second segment, and a third segment connected in sequence, the second segment being embedded in the end plate, the first segment and the third segment extending from the end plate, the first segment being electrically connected to the battery cell pack; and / or A sampling unit is used to collect signals from the battery cell group. The end plate is provided with a channel through which the sampling unit passes. The channel extends from the top to the bottom of the end plate. The sampling unit passes through the channel, and one end of the sampling unit is connected to the battery cell group.

2. The battery according to claim 1, wherein, The first segment extends from the top of the end plate to be electrically connected to the battery cell assembly.

3. The battery according to claim 1 or 2, wherein, The third segment extends from the bottom of the end plate.

4. The battery according to claim 3, wherein, The enclosure also includes a bottom wall, the side walls surround the bottom wall, the bottom wall is provided with a through hole, and the third section extends from the through hole to lead electrical energy to the outside of the enclosure.

5. The battery according to claim 4, wherein, The battery also includes: An insulating component is disposed between the wall of the through hole and the power lead-out component, for insulating and isolating the wall of the through hole and the power lead-out component.

6. The battery according to claim 5, wherein, The insulating component is integrally formed with the end plate.

7. The battery according to claim 1, wherein, The end plate and the power lead-out component are injection molded as a single unit.

8. The battery according to claim 1, wherein, The power lead is bent at least twice in the extending direction of the power lead.

9. The battery according to claim 8, wherein, The bending angle of the power lead-out component is 40° to 130°.

10. The battery according to any one of claims 1 to 9, wherein, The end plate includes: The end plate body has a first side facing the battery cell group and a second side facing away from the battery cell group, the first side abutting against the battery cell group; Multiple first reinforcing ribs are formed on the second surface and abut against the sidewall, and the multiple first reinforcing ribs are spaced apart in the vertical direction; The second segment extends through the plurality of first reinforcing ribs.

11. The battery according to claim 10, wherein, The power lead-out component is detachably mounted on the end plate, and each of the first reinforcing ribs has a clearance opening for avoiding the power lead-out component.

12. The battery according to any one of claims 1 to 9, wherein, The battery also includes: The output terminal has one end electrically connected to the battery cell group for outputting the electrical energy of the battery cell group, and the other end electrically connected to the first segment.

13. The battery according to any one of claims 1 to 9, wherein, The battery also includes: A high-voltage distribution box is disposed outside the enclosure, and the third section extends out of the enclosure to connect with the high-voltage distribution box.

14. The battery according to claim 1, wherein, One end of the sampling unit extends from the top of the end plate to connect with the battery cell assembly, and the other end of the sampling unit extends from the bottom of the end plate and passes through the housing to lead the signal to the outside of the housing.

15. The battery according to claim 1 or 14, wherein, The sampling unit includes: Sampling unit body; A blocking portion is formed on the outer peripheral surface of the sampling unit body and protrudes from the outer peripheral surface of the sampling unit body. The blocking portion is used to cover the gap between the sampling unit body and the inner wall of the channel.

16. An electrical device comprising a battery as claimed in any one of claims 1 to 15, the battery being used to provide electrical energy.

17. A method for manufacturing a battery, comprising: A housing is provided, the housing including sidewalls for enclosing and forming a receiving cavity; A battery cell assembly is provided, the battery cell assembly comprising a plurality of battery cells arranged in a stacked manner; An end plate and a power lead-out component are provided, the power lead-out component comprising a first segment, a second segment, and a third segment connected in sequence, the second segment being embedded in the end plate, and the first segment and the third segment extending out from the end plate; The battery cell assembly is disposed in the accommodating cavity; and / or, an end plate and a sampling unit are provided, the sampling unit being used to collect signals from the battery cell assembly, the end plate having a channel through which the sampling unit passes, the channel extending from the top to the bottom of the end plate, and the sampling unit passing through the channel; The end plate and the power lead-out component are disposed in the accommodating cavity, and the end plate is located between the battery cell group and the side wall; The first segment is electrically connected to the battery cell group; and / or, one end of the sampling unit is connected to the battery cell group.

18. A battery manufacturing apparatus, comprising: A module is provided for providing a power lead-out component and / or a sampling unit, as well as a housing, a battery cell assembly, and an end plate. The housing includes sidewalls for enclosing and forming an accommodating cavity. The battery cell assembly includes multiple battery cells stacked in a layered arrangement. The power lead-out component includes a first segment, a second segment, and a third segment connected in sequence. The second segment is embedded in the end plate, and the first and third segments extend out of the end plate. The sampling unit is used to collect signals from the battery cell assembly. The end plate is provided with a channel through which the sampling unit passes. The channel extends from the top to the bottom of the end plate. The sampling unit passes through the channel, and one end of the sampling unit is connected to the battery cell assembly. An assembly module is used to place the battery cell group in the accommodating cavity, place the power lead-out component and / or sampling unit and the end plate in the accommodating cavity, and position the end plate between the battery cell group and the side wall, electrically connect the first segment to the battery cell group, and / or connect one end of the sampling unit to the battery cell group.

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