Acquisition assembly of battery device and battery device

Abstract

The embodiment of the utility model provides an acquisition assembly of a battery device and the battery device, and the acquisition assembly comprises a circuit board which is used for acquiring the state information of the battery device. And the buckling piece is arranged on the battery device. The first collecting piece is partially arranged in the buckling piece and used for connecting the circuit board and the buckling piece, the buckling piece comprises a fixing part and a base, a protruding part is arranged on the portion, close to the first end, of the fixing part, the base comprises a clamping part, and the first end of the fixing part is connected with the base in a pivoted mode; and the second end part, far away from the first end part, of the fixing part is clamped with the clamping part, so that the bulge part tightly presses the first collecting piece. The reliability and the stability of the connection between the acquisition assembly and the battery device are improved while the detachable connection between the acquisition assembly and the battery device is realized.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a collection component of a battery device and a battery device. Background Art

[0002] As the world increases its support for the development of new energy technologies, various technologies related to energy storage have been widely used. In order to meet the demand for large-capacity energy storage devices, it is necessary to monitor the energy storage devices through acquisition components. Therefore, how to stably and reliably monitor the energy storage devices through acquisition components is an urgent problem to be solved. Utility Model Content

[0003] The embodiment of the present application provides a collection component of a battery device and a battery device, aiming to achieve a detachable connection between the collection component and the battery device by setting a snap-on part on the battery device, while improving the reliability and stability of the connection between the collection component and the battery device.

[0004] In a first aspect, the present application provides a collection component for a battery device, comprising: a circuit board, the circuit board is used to collect status information of the battery device; a snap-on component, the snap-on component is arranged on the battery device; a first collection component, the first collection component is partially arranged in the snap-on component, and is used to connect the circuit board and the snap-on component, wherein the snap-on component comprises a fixing portion and a base, the fixing portion is provided with a protrusion near the first end, the base comprises a clamping portion, the first end of the fixing portion is pivotally connected to the base, and the second end of the fixing portion away from the first end is clamped with the clamping portion, so that the protrusion is pressed tightly against the first collection component.

[0005] In the technical solution of the embodiment of the present application, part of the first collection member is arranged in the snap-on member, and the first collection member and the snap-on member are detachably connected by snapping the fixing portion of the snap-on member with the base. In the event of a circuit board failure, the detachable connection can be quickly replaced. In addition, the first end of the fixing portion of the snap-on member is pivotally connected to the base. When the fixing portion pivots toward the base, the second end of the fixing portion away from the first end is snapped with the snap-on member, and the raised portion of the fixing portion presses the first collection member tightly, which can reduce the lateral movement or falling off of the first collection member, thereby improving the reliability and stability of the connection between the collection component and the battery device.

[0006] In some embodiments, the base includes a receiving groove and an elastic component, the elastic component and the clamping portion are received in the receiving groove, one end of the elastic component abuts against the inner wall of the receiving groove, and the other end abuts against the clamping portion, wherein when the second end of the fixing portion is clamped with the clamping portion, the elastic component is in a compressed state.

[0007] In the technical solution of the embodiment of the present application, an elastic component is arranged on the base, and the elastic action of the elastic component enables the second end of the fixing part and the clamping part to be clamped more flexibly, thereby improving the reliability of the clamping between the second end of the fixing part and the clamping part.

[0008] In some embodiments, a first receiving groove and a second receiving groove are respectively provided on both sides of the base, the clamping portion includes a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are respectively accommodated in the first receiving groove and the second receiving groove, the first collecting piece is located between the first receiving groove and the second receiving groove, the clamping portion includes a first clamping portion and a second clamping portion, wherein the second end of the fixing portion is clamped with the first clamping portion and the second clamping portion.

[0009] In the technical solution of the embodiment of the present application, by arranging elastic components and accommodating grooves on both sides of the base, the second end of the fixing part and the clamping part can be clamped more flexibly through the elastic action of the elastic components on both sides, thereby improving the reliability of the clamping between the second end of the fixing part and the clamping part.

[0010] In some embodiments, a matching portion is provided at one end of the clamping portion away from the accommodating groove, and a hooking portion is provided at the second end of the fixing portion, wherein the hooking portion is hooked with the matching portion, and the contact surface between the matching portion and the hooking portion is an inclined surface.

[0011] In the technical solution of the embodiment of the present application, by providing a matching portion on the clamping portion and providing a hooking portion on the second end of the fixing portion, a stronger fixing effect can be provided during the clamping process between the clamping portion and the fixing portion, thereby ensuring the stability of the connection between the clamping portion and the fixing portion and reducing the relative movement or falling off between the two. In addition, the contact surface between the matching portion and the hooking portion is set as an inclined surface. When the clamping portion and the fixing portion are clamped together, the inclined surface design can increase the contact area between the two, thereby improving the strength and stability of the clamping.

[0012] In some embodiments, the first acquisition member is a nickel strip.

[0013] In the technical solution of the embodiment of the present application, the nickel strip has a high electrical conductivity, and the first collecting member is set as the nickel strip, which can effectively collect the status information of the battery device and improve the accuracy of the status information. In addition, the nickel strip is easy to weld between the first collecting member and the circuit board.

[0014] In some embodiments, a recessed portion is provided on one side of the first collecting member away from the base, the raised portion cooperates with the recessed portion, and the second end of the fixing portion is clamped with the base so that the raised portion presses tightly against the recessed portion.

[0015] In the technical solution of the embodiment of the present application, by providing a recessed portion on the first collecting member, during the pivoting process of the fixing portion, the raised portion and the recessed portion can cooperate to achieve more stable pressing of the first collecting member.

[0016] In some embodiments, a protrusion is provided on the first surface of the fixing portion facing the base, and when the fixing portion is configured to be pressed tightly against the first collecting member, a second surface of the fixing portion away from the base is parallel to the base.

[0017] In the technical solution of the embodiment of the present application, when the fixing part is configured to be pressed tightly against the first collecting piece, the second surface of the fixing part away from the base is parallel to the base, so that the fixing part can be tightly pressed against the first collecting piece, thereby improving the strength and stability of the clamping between the fixing part and the first collecting piece.

[0018] In some embodiments, the base includes a receiving portion for partially receiving the first collecting member, the first end of the fixing portion is fixedly connected to the inner wall of the receiving portion via a pin, and the cross-sectional shape of the protrusion perpendicular to the pin is an arc.

[0019] In the technical solution of the embodiment of the present application, the arc-shaped design of the cross-sectional shape of the protrusion perpendicular to the pin shaft can make the protrusion produce smooth linear or rotational motion during the pressing process, reduce impact and vibration, and improve the stability of the fixing part during mechanical movement. In addition, the arc-shaped design can reduce the friction and wear between the protrusion and the base, thereby extending the service life of the mechanical parts.

[0020] In some embodiments, the base is welded to the busbar of the battery device, and the first collecting member is welded to the circuit board.

[0021] In the technical solution of the embodiment of the present application, the base is welded to the bus, that is, the circuit board is connected to the bus of the battery device through the first collecting component. The bus is the collection point of the positive or negative pole of the battery device. The first collecting component is arranged on the bus to centrally collect the total voltage of the battery device, which is convenient for overall monitoring.

[0022] In a second aspect, a battery device is provided, comprising a plurality of battery cells and a collection component according to the first aspect or any one embodiment of the first aspect, wherein the collection component is used to collect status information of the plurality of battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A partial structural schematic diagram of a battery device according to an embodiment of the present application is shown.

[0024] Figure 2 A schematic diagram of a collection component of a battery device provided in an embodiment of the present application is shown.

[0025] Figure 3 A schematic diagram of a collection component of another battery device provided in an embodiment of the present application is shown.

[0026] Figure 4A schematic diagram of a collection component of another battery device provided in an embodiment of the present application is shown.

[0027] Figure 5 An enlarged view of a collection component of another battery device provided in an embodiment of the present application is shown.

[0028] Figure 6 An enlarged view of a collection component of another battery device provided in an embodiment of the present application is shown.

[0029] Figure 7 A schematic diagram of the cross-sectional structure of a collection component of another battery device provided in an embodiment of the present application along the X direction is shown.

[0030] Figure 8 A schematic diagram of a collection component of another battery device provided in an embodiment of the present application is shown.

[0031] Fig. 9 A schematic diagram of a collection component of another battery device provided in an embodiment of the present application is shown.

[0032] Fig.10 A schematic diagram of a collection component of another battery device provided in an embodiment of the present application is shown.

[0033] Reference numerals: battery device 10 , battery cell 12 .

[0034] The housing 11 comprises a first housing portion 111 and a second housing portion 112 .

[0035] Collection component 20.

[0036] Circuit board 21 and first collecting component 22 .

[0037] The buckle 23.

[0038] The fixing portion 231 , the protruding portion 2311 , and the hooking portion 2312 .

[0039] Base 232 , accommodating portion 2321 , elastic component 2322 , accommodating groove 2324 .

[0040] The clamping portion 2323 and the matching portion 23231 .

[0041] Electrical switching unit 24. DETAILED DESCRIPTION

[0042] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0046] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0047] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0048] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0049] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, it is mentioned that the method may also include step (c), which means that step (c) can be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0050] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0051] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0052] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0053] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0054] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0055] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0056] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0057] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0058] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0059] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0060] The embodiment of the present application provides an energy storage device, including one or more battery clusters (Battery Cluster) to increase the voltage and capacity of the energy storage device. The battery cluster may include multiple battery devices, and the multiple battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0061] The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low power consumption and provide electrical energy to relevant users or electrical equipment during peak power consumption. The energy storage system provided in the embodiment of the present application can be any power system that requires the use of an energy storage device.

[0062] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0063] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters, wherein the battery clusters are housed in the cabinet.

[0064] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0065] As an example, the thermal management module may include a liquid cooling unit that provides cooling liquid for regulating the temperature of the battery cells to each battery device through a pipeline.

[0066] As an example, the main control module can be used as a battery management unit of a battery cluster to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The main control module includes a slave battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch and other modules.

[0067] As an example, the master control module can be used as a battery management unit of an energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), Ethernet ETH (EtherNet, ETH) and a fiber optic conversion module.

[0068] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., which are used to detect, alarm or extinguish fire in the energy storage system.

[0069] As an example, the power distribution device may be used to distribute power to the power modules of the energy storage device.

[0070] In some embodiments, the energy storage system may include one or more energy storage devices 1 and a power converter 2 (Power Converter System, PCS for short), and the power converter 2 is used to connect between the power generation device 3 and the energy storage device 1. The power generation device 3 is used to generate electric energy, and the electric energy generated by the power generation device 3 can be stored in the energy storage device 1 through the power converter 2. As an example, the power generation device 3 can specifically be a solar panel, a hydropower generation device, a thermal power generation device, a wind power generation device, etc. Among them, the specific type of the power generation device 3 is not limited in this application.

[0071] In the process of collecting battery information of energy storage devices, a circuit board, such as a flexible printed circuit (FPC), is usually used as a battery information collection component. The circuit board is connected to the battery through a collection component to collect battery information. In the process of collecting battery information through a circuit board and a collection component, the collection component is usually welded to the battery and the circuit board respectively. Under this connection method, if an abnormality occurs in the voltage fuse or temperature sampling point on the circuit board, the abnormality can only be tested point by point through flying wires, or the entire test battery must be replaced, which is costly and causes a certain amount of battery waste.

[0072] In order to alleviate the above problems, the collection piece and the battery device are detachably connected in the form of a buckle. With this design, if the voltage fuse or temperature sampling point in the circuit board is abnormal, the circuit board and the battery can be separated by removing the buckle, and the circuit board and the collection piece can be directly replaced, which can reduce costs and reduce battery waste. During the detachable connection between the collection piece and the battery device, if the connection between the two is not firm, they will slide left and right or fall off.

[0073] Based on the above considerations, in order to solve the problem of detachable connection between the collection piece and the battery device while improving the reliability and stability of the connection between the collection component and the battery device, the present application proposes a collection component for the battery device, which includes: a circuit board, which is used to collect status information of the battery device; a snap-on component, which is arranged on the battery device; a first collection piece, which is partially arranged in the snap-on component and is used to connect the circuit board and the snap-on component, wherein the snap-on component includes a fixing portion and a base, the fixing portion is provided with a protruding portion near the first end, the base includes a snap-on portion, the first end of the fixing portion is pivotally connected to the base, and the second end of the fixing portion away from the first end is snap-on to the snap-on portion, so that the protruding portion presses the first collection piece tightly.

[0074] By arranging part of the first collection member in the snap-fit ​​member, the first collection member and the snap-fit ​​member are detachably connected by snapping the fixing part of the snap-fit ​​member with the base, so that a quick replacement can be achieved in the event of a circuit board failure. In addition, the first end of the fixing part of the snap-fit ​​member is pivotally connected to the base, and when the fixing part pivots toward the base, the second end of the fixing part away from the first end is snapped with the snap-fit ​​part, and the raised part of the fixing part presses the first collection member tightly, so that the first collection member can be reduced from lateral movement or falling off, thereby improving the reliability and stability of the connection between the collection component and the battery device.

[0075] Figure 1 FIG. 1 is a schematic diagram showing a partial structure of a battery device 10 according to an embodiment of the present application. Figure 1 As shown, the battery device 10 of the embodiment of the present application may include a plurality of battery cells 12 to meet different power requirements. The shape of the battery cell 12 of the embodiment of the present application may be set according to the actual application. For example, the battery cell 12 may be as follows: Figure 1 The cylindrical shape shown, or it can also be different from Figure 1 The rectangular parallelepiped or other shapes shown are not limited to the embodiments of the present application.

[0076] It should be understood that Figure 1As shown, the battery device 10 of the embodiment of the present application may further include a box body 11, which may be used to accommodate a plurality of battery cells 12. The interior of the box body 11 of the embodiment of the present application is a hollow structure, and a plurality of battery cells 12 are accommodated in the box body 11. The box body 11 may include two parts, which are respectively referred to as a first box body part 111 and a second box body part 112, and the first box body part 111 and the second box body part 112 are buckled together. The shapes of the first box body part 111 and the second box body part 112 may be determined according to the shapes of the components accommodated inside. For example, they may be determined according to the shape of the combination of the plurality of battery cells 12 accommodated inside. At least one of the first box body part 111 and the second box body part 112 has an opening. For example, as Figure 1 As shown, the first box body 111 and the second box body 112 can both be hollow cuboids and each have an open face, the opening of the first box body 111 and the opening of the second box body 112 are arranged opposite to each other, and the first box body 111 and the second box body 112 are buckled together to form a box body 11 with a closed chamber, which can be used to accommodate multiple battery cells 12. Multiple battery cells 12 are connected in parallel, in series, or in mixed combination and placed in the box body 11 formed by the first box body 111 and the second box body 112 buckled together.

[0077] For example, different from Figure 1 As shown, only one of the first box body 111 and the second box body 112 may be a hollow cuboid with an opening, while the other is in a plate shape to cover the opening. Taking the second box body 112 as a hollow cuboid with an opening and the first box body 111 as a plate, the first box body 111 covers the opening of the second box body 112 to form a box body 11 with a closed chamber, which can be used to accommodate multiple battery cells 12.

[0078] Figure 2 A schematic diagram of a collection component 20 of a battery device provided in an embodiment of the present application is shown.

[0079] According to some embodiments of the present application, referring to Figure 2 , and please refer to Figures 3 to 7 , Figure 3 A schematic diagram of another collection component 20 of a battery device provided in an embodiment of the present application is shown. Figure 4 A schematic diagram of another collection component 20 of a battery device provided in an embodiment of the present application is shown. Figure 5 and Figure 6 The enlarged views of the collection component 20 of another battery device provided in the embodiment of the present application are shown respectively, Figure 7A schematic diagram of the cross-sectional structure of another battery device collection component 20 provided in an embodiment of the present application along the X direction is shown. The present application provides a battery device collection component 20, the collection component 20 includes a circuit board 21, the circuit board 21 is used to collect the status information of the battery device. A snap-on 23, the snap-on 23 is arranged on the battery device. A first collection component 22, the first collection component 22 is partially arranged in the snap-on 23, and is used to connect the circuit board 21 and the snap-on 23, wherein the snap-on 23 includes a fixing portion 231 and a base 232, the fixing portion 231 is provided with a protruding portion 2311 near the first end, the base 232 includes a snap-on portion 2323, the first end of the fixing portion 231 is pivotally connected to the base 232, and the second end of the fixing portion 231 away from the first end is snap-on with the snap-on portion 2323, so that the protruding portion 2311 is pressed tightly against the first collection component 22.

[0080] As shown in the figure, the Y direction in the figure is the length direction of the buckle 23, the X direction in the figure is the width direction of the buckle 23, and the Z direction in the figure is the thickness direction of the buckle 23.

[0081] It should be understood that the battery device in the embodiment of the present application can be Figure 1 The battery device 10 in.

[0082] like Figure 2 As shown, the first acquisition component 22 is used to connect the circuit board 21 and the snap-on component 23, or it can be described as the first acquisition component 22 is used to connect the circuit board 21 and the battery device, and the connection between the first acquisition component 22 and the circuit board 21 and the battery device can be conductive, and the circuit board 21 collects status information of the battery device through the first acquisition component 22, wherein the status information can be one or more of the temperature information, voltage information or current information of the battery device, and the present application does not impose any limitation on this.

[0083] The circuit board 21 may be an FPC. The following embodiments are all described by taking the FPC as an example, and the present application does not impose any limitation on this.

[0084] like Figures 2 to 7 As shown, the first end of the fixing portion 231 is pivotally connected to the base 232, that is, the first end of the fixing portion 231 is connected to the base 232 via a pivot or axis, hinge or bearing, etc., so that the fixing portion 231 and the base 232 can rotate freely within a certain range while keeping other types of movement (such as translation) restricted.

[0085] like Figure 7 As shown, a protrusion 2311 is disposed near the first end of the fixing portion 231 . More specifically, the protrusion 2311 is disposed on a surface of the fixing portion 231 near the base 232 .

[0086] When the fixing portion 231 approaches the base 232, the second end of the fixing portion 231 away from the first end is engaged with the clamping portion 2323. At this time, the protrusion 2311 of the fixing portion 231 is constantly squeezing the first collecting piece 22. When the second end of the fixing portion 231 away from the first end is engaged with the clamping portion 2323, the protrusion 2311 presses the first collecting piece 22 tightly.

[0087] Optionally, the protrusion 2311 may also be disposed between the first end and the second end of the fixing portion 231 , so as to press the first collecting member 22 during the pivoting process, and the present application does not impose any limitation on this.

[0088] In the embodiment of the present application, part of the first collection member 22 is disposed in the clamping portion 2323, and the first collection member 22 and the clamping member 23 are detachably connected by clamping the fixing portion 231 of the clamping portion 2323 and the base 232. In the event of a circuit board failure, the detachable connection can be quickly replaced. In addition, the first end of the fixing portion 231 of the clamping member 23 is pivotally connected to the base 232. When the fixing portion 231 pivots toward the base 232, the second end of the fixing portion 231 away from the first end is clamped to the clamping portion 2323, and the protrusion 2311 of the fixing portion 231 presses the first collection member 22, reducing the lateral movement or falling off of the first collection member 22, thereby improving the reliability and stability of the connection between the collection assembly 20 and the battery device.

[0089] According to some embodiments of the present application, optionally, please continue to refer to Figures 5 to 7 The base 232 includes a receiving groove 2324 and an elastic component 2322. The elastic component 2322 and the clamping portion 2323 are received in the receiving groove 2324. One end of the elastic component 2322 abuts against the inner wall of the receiving groove 2324, and the other end abuts against the clamping portion 2323. When the second end of the fixing portion 231 is clamped with the clamping portion 2323, the elastic component 2322 is in a compressed state.

[0090] The base 232 includes a receiving groove 2324 and an elastic component 2322, and the receiving groove 2324 and the elastic component 2322 can be arranged away from the pivotal connection end of the fixing portion 231 and the base 232, wherein the elastic component 2322 and the clamping portion 2323 are accommodated in the receiving groove 2324, and the receiving groove 2324 can be one or more, for example, the receiving groove 2324 can be one, and is arranged on the left side or right side of the base 232 (any side along the X direction in the figure). The elastic component 2322 can be a spring, a diaphragm, etc., and this application does not impose any limitation on this.

[0091] In the embodiment of the present application, when the elastic component 2322 is configured in a compressed state, the second end of the fixing portion 231 pushes the clamping portion 2323 to achieve the clamping connection between the fixing portion 231 and the clamping portion 2323, so that the protrusion 2311 presses the first collecting member 22. When the elastic component 2322 is configured in a non-compressed state, that is, when the elastic component 2322 gradually returns to its original state, the fixing portion 231 and the clamping portion 2323 are disengaged.

[0092] Optionally, when the elastic component 2322 is in a non-compressed state, the second end of the fixing portion 231 pushes the clamping portion 2323 to achieve clamping between the fixing portion 231 and the clamping portion 2323 .

[0093] In an embodiment of the present application, an elastic component 2322 is provided on the base 232. The elastic action of the elastic component 2322 enables the second end of the fixing portion 231 and the clamping portion 2323 to be clamped more flexibly, thereby improving the reliability of the clamping between the second end of the fixing portion 231 and the clamping portion 2323.

[0094] According to some embodiments of the present application, optionally, please continue to refer to Figures 5 to 7 The base 232 is provided with a first receiving groove and a second receiving groove on both sides, respectively. The clamping part 2323 includes a first clamping part and a second clamping part, which are respectively received in the first receiving groove and the second receiving groove. The first collecting member 22 is located between the first receiving groove and the second receiving groove, wherein the second end of the fixing part 231 is clamped with the first clamping part and the second clamping part. The base 232 is provided with receiving grooves 2324 on both sides. By providing receiving grooves on both sides of the base 232 to accommodate the elastic component 2322 and the clamping part 2323, the two sides of the second end of the fixing part 231 can be buckled with the clamping part 2323 to achieve a more secure buckling.

[0095] In addition, when there are two accommodating grooves 2324, the process of buckling the fixing portion 231 and the clamping portion 2323 by configuring the elastic components 2322 on both sides in a compressed state is the same as that in the above embodiment, and the present application will not repeat it here.

[0096] In the embodiment of the present application, elastic components 2322 and receiving grooves 2324 are provided on both sides of the base 232, so that the second end of the fixing portion 231 and the clamping portion 2323 can be clamped more flexibly through the elastic action of the elastic components 2322 on both sides, thereby improving the reliability of the clamping between the second end of the fixing portion 231 and the clamping portion 2323.

[0097] According to some embodiments of the present application, optionally, reference may be made to Figures 5 to 7A matching portion 23231 is provided at one end of the clamping portion 2323 away from the accommodating groove 2324, and a hooking portion 2312 is provided at the second end of the fixing portion 231, wherein the hooking portion 2312 is hooked with the matching portion 23231, and the contact surface between the matching portion 23231 and the hooking portion 2312 is an inclined surface.

[0098] The second end of the fixing portion 231 is provided with a hooking portion 2312. Figure 6 As shown, the shape of the hooking portion 2312 can be similar to a hook, and the matching portion 23231 is used to hook with the hooking portion 2312 when the elastic component is in a compressed state.

[0099] The contact surface between the matching portion 23231 and the hooking portion 2312 can be designed as an inclined surface. When the matching portion 23231 and the hooking portion 2312 are clamped together, the inclined surface design can increase the contact area between the two, thereby improving the strength and stability of the clamping. It should be understood that in the embodiment of the present application, the contact surface between the matching portion 23231 and the hooking portion 2312 can also be designed into other shapes, such as a curved surface, etc., and the present application does not make any limitation on this.

[0100] In the embodiment of the present application, by providing the matching portion 23231 on the clamping portion 2323 and providing the hooking portion 2312 on the second end of the fixing portion 231, a stronger fixing effect can be provided during the clamping of the clamping portion 2323 and the fixing portion 231, thereby ensuring the stability of the connection between the clamping portion 2323 and the fixing portion 231 and reducing the relative movement or falling off between the two. In addition, the contact surface of the matching portion 23231 and the hooking portion 2312 is set as an inclined surface. When the clamping portion 2323 and the fixing portion 231 are clamped together, the inclined surface design can increase the contact area between the two, thereby improving the strength and stability of the clamping.

[0101] According to some embodiments of the present application, optionally, the first collecting member 22 is a nickel strip.

[0102] Nickel strips have high electrical conductivity, and setting the first collecting member 22 as a nickel strip can effectively collect the status information of the battery device and improve the accuracy of the status information. In addition, the nickel strips facilitate welding between the first collecting member 22 and the circuit board 21.

[0103] It should be understood that the first collecting member may also be made of other materials with good conductivity, such as copper and iron, etc., and the present application does not impose any limitation on this.

[0104] Figure 8 A schematic diagram of a collection component 20 of another battery device provided in an embodiment of the present application is shown.

[0105] According to some embodiments of the present application, optionally, a recessed portion 221 is provided on one side of the first collecting member 22 away from the base 232 , the raised portion 2311 cooperates with the recessed portion 221 , and the second end of the fixing portion 231 is clamped with the base 232 so that the raised portion 2311 presses tightly against the recessed portion 221 .

[0106] Part of the first collecting member 22 is disposed in the base 232. When the first collecting member 22 is provided with a recessed portion 221 on a side away from the base 232, during the pivoting process of the protruding portion 2311, when the protruding portion 2311 rotates toward the base 232, the cooperation between the protruding portion 2311 and the recessed portion 221 can provide more precise positioning, thereby ensuring the alignment of the protruding portion 2311 with the recessed portion 221. In addition, the recessed portion 221 can better capture the protruding portion to provide a stronger holding force, thereby preventing the first collecting member 22 from loosening under vibration or impact.

[0107] According to some embodiments of the present application, optionally, continue to refer to Figures 2 to 8 The fixing portion 231 is provided with a protrusion 2311 on the first surface facing the base 232 , and when the fixing portion 231 is configured to be pressed tightly against the first collecting member 22 , the second surface of the fixing portion 231 away from the base 232 is parallel to the base 232 .

[0108] The first surface is the lower surface of the fixing portion 231 facing the base 232 (the first surface along the Z direction in the figure), and the second surface is the upper surface of the fixing portion 231 away from the base 232 .

[0109] When the fixing portion 231 is configured to be pressed tightly against the first collecting piece 22, the second surface of the fixing portion 231 away from the base 232 is parallel to the base 232, that is, there is no gap between the fixing portion 231 and the first collecting piece 22. More specifically, the first surface of the fixing portion 231 and the upper surface of the first collecting piece 22 (the surface provided with the recessed portion 221) are pressed tightly without any gap.

[0110] In the embodiment of the present application, when the fixing portion 231 is configured to be pressed tightly against the first collecting piece 22, the second surface of the fixing portion 231 away from the base 232 is parallel to the base 232, so that the fixing portion 231 can be tightly pressed against the first collecting piece 22, thereby improving the strength and stability of the clamping between the fixing portion 231 and the first collecting piece 22.

[0111] According to some embodiments of the present application, optionally, reference may be made to Figures 2 to 8 The base 232 includes a receiving portion 2321, which is used to partially receive the first collecting member 22. The first end of the fixing portion 231 is fixedly connected to the inner wall of the receiving portion 2321 through a pin, and the cross-sectional shape of the protrusion 2311 perpendicular to the pin is an arc.

[0112] The arc-shaped design of the cross-sectional shape of the protrusion 2311 perpendicular to the pin shaft can make the protrusion 2311 produce smooth linear or rotational motion during the pressing process, reduce impact and vibration, and improve the stability of the fixing part 231 during mechanical movement. In addition, the arc-shaped design can reduce the friction and wear between the protrusion 2311 and the base 232, thereby extending the service life of the mechanical parts.

[0113] It should be understood that in the embodiment of the present application, the cross-sectional shape of the protrusion 2311 perpendicular to the pin shaft can also be designed to be other shapes, such as a rectangle, an irregular shape, etc., and the present application does not impose any limitation on this.

[0114] According to some embodiments of the present application, optionally, the dimension of the protrusion 2311 along the pin axis direction is the same as the dimension of the accommodation portion 2321 along the pin axis direction.

[0115] The dimension of the protrusion 2311 along the pin axis direction is the same as the dimension of the accommodation portion 2321 along the pin axis direction, which can increase the contact area between the protrusion 2311 and the first collecting member 22 during the contact process.

[0116] Optionally, the size of the protrusion 2311 along the pin axis direction may be different from the size of the accommodation portion 2321 along the pin axis direction. For example, the size of the protrusion 2311 along the pin axis direction is smaller than the size of the accommodation portion 2321 along the pin axis direction. The protrusion 2311 may also press the first collecting member 22 during the pivoting process.

[0117] Fig. 9 and Fig.10 Schematic diagrams of another collection component 20 of a battery device provided in an embodiment of the present application are respectively shown.

[0118] According to some embodiments of the present application, optionally, reference Fig. 9 and Fig.10 The base 232 is welded on the bus of the battery device, and the first collecting member 22 is welded on the circuit board 21 .

[0119] The battery device also includes an electrical adapter 24, wherein the electrical adapter 24 can be a bus, and the base 232 is welded to the bus, that is, the circuit board 21 is connected to the bus of the battery device through the first collection component 22. The bus is the collection point of the positive or negative pole of the battery device. The first collection component 22 is set on the bus to centrally collect the total voltage of the battery device, which is convenient for overall monitoring.

[0120] It should be understood that the base 232 can be welded to any part of the battery device as long as it can be electrically connected and can measure the status information of the battery device, such as voltage information, and the present application does not impose any limitation on this.

[0121] According to some embodiments of the present application, optionally, the collection component 20 also includes a temperature collector and a second collection component, the temperature collector is arranged on the battery device and connected to the second collection component, and the second collection component is connected to the circuit board 21 for collecting temperature information.

[0122] like Fig.10 As shown, by arranging a temperature collector on the battery device and connecting the temperature collector to the circuit board 21 via a second collecting component, the temperature information of the battery device can be effectively measured.

[0123] According to some embodiments of the present application, optionally, continue to refer to Fig. 9 and Fig.10 The second collecting component includes a first component and a second component, wherein the first component is connected to the temperature collector, the second component is connected to the circuit board 21, and the first component and the second component are detachably connected.

[0124] The first component and the second component in the second collecting member are detachably connected, and when the temperature of the battery device is abnormal, the first component and the second component can be detached to improve convenience.

[0125] According to some embodiments of the present application, the present application further provides a battery device, including a plurality of battery cells, and a collection component of any of the above schemes, wherein the collection component is used to collect status information of the plurality of battery cells.

[0126] According to some embodiments of the present application, the present application also provides an energy storage device, including a battery device according to any of the above schemes, and the battery device is used to store or provide electrical energy.

[0127] According to some embodiments of the present application, the present application also provides an energy storage system, including a power conversion device and an energy storage device of any of the above schemes, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0128] According to some embodiments of the present application, see Figures 2 to 9The present application provides a collection component of a battery device, the collection component includes a circuit board 21, the circuit board 21 is used to collect status information of the battery device; a snap-on component 23, the snap-on component 23 is arranged on the battery device. A first collection component 22, the first collection component 22 is partially arranged in the snap-on component 23, and is used to connect the circuit board 21 and the snap-on component 23, wherein the snap-on component 23 includes a fixing portion 231 and a base 232, the fixing portion 231 is provided with a protrusion 2311 near the first end, the base 232 includes a snap-on component 2323, the first end of the fixing portion 231 is pivotally connected to the base 232, and the second end of the fixing portion 231 away from the first end is snap-on with the snap-on component 2323, so that the protrusion 2311 is pressed tightly against the first collection component 22. Part of the first collection member 22 is arranged in the clamping portion 2323, and the first collection member 22 and the clamping member 23 are detachably connected by clamping the fixing portion 231 of the clamping portion 2323 and the base 232. In the event of a circuit board failure, the detachable connection can be quickly replaced. In addition, the first end of the fixing portion 231 of the clamping member 23 is pivotally connected to the base 232. When the fixing portion 231 pivots toward the base 232, the second end of the fixing portion 231 away from the first end is clamped to the clamping portion 2323, and the protrusion 2311 of the fixing portion 231 presses the first collection member 22, reducing the lateral movement or falling off of the first collection member 22, thereby improving the reliability and stability of the connection between the collection assembly 20 and the battery device.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A collection component of a battery device, characterized in that: include: A circuit board (21), the circuit board (21) being used to collect status information of the battery device; A snap fastener (23), the snap fastener (23) being arranged on the battery device; a first collecting member (22), wherein the first collecting member (22) is partially disposed in the buckle member (23) and is used to connect the circuit board (21) and the buckle member (23); The fastener (23) comprises a fixing portion (231) and a base (232); a protrusion (2311) is provided at a first end of the fixing portion (231) close to the fixing portion (231); the base (232) comprises a clamping portion (2323); the first end of the fixing portion (231) is pivotally connected to the base (232); a second end of the fixing portion (231) away from the first end is clamped to the clamping portion (2323), so that the protrusion (2311) presses the first collecting member (22).

2. The collection component according to claim 1, characterized in that: The base (232) comprises a receiving groove (2324) and an elastic component (2322); the elastic component (2322) and the clamping portion (2323) are received in the receiving groove (2324); one end of the elastic component (2322) abuts against an inner wall of the receiving groove (2324), and the other end abuts against the clamping portion (2323); Wherein, when the second end of the fixing portion (231) is engaged with the engaging portion (2323), the elastic component (2322) is in a compressed state.

3. The collection component according to claim 2, characterized in that: A first receiving groove and a second receiving groove are respectively provided on both sides of the base (232); the clamping portion (2323) comprises a first clamping portion and a second clamping portion; the first clamping portion and the second clamping portion are respectively received in the first receiving groove and the second receiving groove; the first collecting member (22) is located between the first receiving groove and the second receiving groove; Wherein, the second end portion of the fixing portion (231) is clamped with the first clamping portion and the second clamping portion.

4. The collection assembly according to claim 2 or 3, characterized in that: A matching portion (23231) is provided at one end of the clamping portion (2323) away from the accommodating groove (2324). The second end portion of the fixing portion (231) is provided with a hooking portion (2312). Wherein, the hooking portion (2312) is hooked with the matching portion (23231), and the contact surface between the matching portion (23231) and the hooking portion (2312) is an inclined surface.

5. The collection assembly according to any one of claims 1 to 3, characterized in that: The first collecting member (22) is a nickel strip.

6. The collection assembly according to any one of claims 1 to 3, characterized in that: A recessed portion (221) is provided on a side of the first collecting member (22) away from the base (232). The raised portion (2311) cooperates with the recessed portion (221), and the second end portion of the fixing portion (231) and the base (232) are snap-fitted, so that the raised portion (2311) is tightly pressed against the recessed portion (221).

7. The collection assembly according to any one of claims 1 to 3, characterized in that: The fixing portion (231) is provided with the protruding portion (2311) facing the first surface of the base (232), The fixing portion (231) is configured such that when the fixing portion (231) is tightly pressed against the first collecting member (22), a second surface of the fixing portion (231) away from the base is parallel to the base (232).

8. The collection assembly according to any one of claims 1 to 3, characterized in that: The base (232) comprises a receiving portion (2321), the receiving portion (2321) being used to partially receive the first collecting member (22), the first end portion of the fixing portion (231) being fixedly connected to the inner wall of the receiving portion (2321) via a pin shaft, The cross-sectional shape of the protrusion (2311) perpendicular to the pin shaft is an arc.

9. The collection assembly according to any one of claims 1 to 3, characterized in that: The base (232) is welded on the busbar of the battery device, and the first collecting component (22) is welded on the circuit board (21).

10. A battery device, characterized in that: The invention comprises a plurality of battery cells and a collection component according to any one of claims 1 to 9, wherein the collection component is used for collecting status information of the plurality of battery cells.

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