Battery sampling equipment, battery and electric equipment

Abstract

The utility model provides a battery sampling device, a battery and an electric device. The battery sampling device comprises a CMC acquisition board, a circuit board and a plurality of sampling pieces. The circuit board comprises a first flexible circuit board section which comprises a first acquisition circuit, and a plurality of sampling pieces are connected to the first flexible circuit board section and electrically connected with the first acquisition circuit; the hard circuit board section comprises a second acquisition circuit, the second acquisition circuit is provided with a first circuit connection area and a second circuit connection area, the hard circuit board section is fixedly connected with the first flexible circuit board section, and the first circuit connection area of the second acquisition circuit is electrically connected with the first acquisition circuit; and the second flexible circuit board section comprises a third acquisition circuit, the second flexible circuit board section is fixedly connected to the hard circuit board section, the third acquisition circuit is electrically connected with the second circuit connection area, and the second flexible circuit board section is electrically connected with the CMC acquisition board.

Description

Technical Field

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

[0002] A battery generally includes a battery pack having multiple battery cells. In order to monitor the stable operation of the battery, it is necessary to obtain the operating parameters of the battery pack, such as voltage, temperature, etc. In the related art, the battery sampling equipment used to collect the operating parameters of the battery pack generally includes a flexible printed circuit (FPC), multiple sampling pieces (such as nickel sheets) connected to the flexible printed circuit, a connector, and a CMC (Cell Module Controller) acquisition board. The sampling piece is connected to the battery pack to collect the operating parameter information of the battery pack, and is transmitted to the battery management system (BMS) through the flexible printed circuit, the connector, and the CMC acquisition board.

[0003] As the degree of battery integration increases, the number of battery cells integrated into the battery pack increases, and the number of operating parameters collected by the battery sampling equipment also increases accordingly. However, the size of the battery cells limits the width of the flexible circuit board. Under the requirement of ensuring the safe design distance of the collection lines, the flexible circuit board may need to integrate a large number of collection lines, but the width of the flexible circuit board is not enough to arrange all the collection lines.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of the present application is to provide a battery sampling device, a battery and an electrical device, aiming to solve the problem that a flexible circuit board needs to integrate a large number of acquisition circuits but the width of the flexible circuit board is not enough to arrange all the acquisition circuits.

[0006] In a first aspect, the present application provides a battery sampling device, including a CMC acquisition board, a circuit board, and a plurality of sampling pieces. The circuit board includes: a first flexible circuit board segment, including a first acquisition circuit, a plurality of sampling pieces are connected to the first flexible circuit board segment and electrically connected to the first acquisition circuit; a hard circuit board segment, including a second acquisition circuit, the second acquisition circuit having a first circuit connection area and a second circuit connection area, the hard circuit board segment is fixedly connected to the first flexible circuit board segment, and the first circuit connection area of ​​the second acquisition circuit is electrically connected to the first acquisition circuit; and a second flexible circuit board segment, including a third acquisition circuit, the second flexible circuit board segment is fixedly connected to the hard circuit board segment, and the third acquisition circuit is electrically connected to the second circuit connection area, and the second flexible circuit board segment is electrically connected to the CMC acquisition board.

[0007] Based on the battery sampling device provided by the present application, the circuit board includes a first flexible circuit board segment connected to multiple sampling pieces, a hard circuit board segment connected to the first flexible circuit board segment, and a second flexible circuit board segment electrically connected to the hard circuit board segment. The second flexible circuit board segment is electrically connected to the multiple sampling pieces through the hard circuit board segment and the first flexible circuit board segment, and is electrically connected to the CMC acquisition board, so that the information collected by the sampling piece can be transmitted to the CMC acquisition board through the first flexible circuit board segment, the hard circuit board segment and the second flexible circuit board segment. Due to the provision of a hard circuit board to connect the first flexible circuit board segment and the second flexible circuit board segment, the first flexible circuit board segment and the second flexible circuit board segment are smaller in length and width directions compared to the flexible circuit board of the prior art. During processing and manufacturing, the utilization rate of the overall material layout is improved, which is conducive to reducing processing costs and saving resources. In addition, even if the second flexible circuit board segment also includes two foldable parts, when the second flexible circuit board segment is electrically connected to the CMC acquisition board, for example, when the two parts are connected by a double connector or by welding, once the two parts are torn, only the second flexible circuit board segment can be replaced without replacing the entire circuit board, thereby saving production and maintenance costs. In addition, the hard circuit board segment and the second flexible circuit board segment can be designed universally, and an appropriate number of collection lines can be designed. When used for different types of batteries, if there are sufficient collection lines, only the first flexible circuit board segment needs to be designed, thereby simplifying the design and manufacturing process.

[0008] In some embodiments of the battery sampling device, the second acquisition circuit of the rigid circuit board segment includes at least two second circuit connection areas; the circuit board includes at least two second flexible circuit board segments, the at least two second flexible circuit board segments are arranged in layers and are respectively fixedly connected to the rigid circuit board segment, and the third acquisition circuits of the at least two second flexible circuit board segments are respectively electrically connected to the at least two second circuit connection areas.

[0009] The second acquisition circuit of the rigid circuit board segment includes at least two second circuit connection areas, and the provision of two or more second flexible circuit board segments is conducive to further solving the problem that the width of the flexible circuit board is insufficient to arrange all acquisition circuits. In addition, the width dimension of the second flexible circuit board can be further reduced, which is conducive to further improving the utilization rate of the overall material layout. When part of the second flexible circuit board segments among the two or more second flexible circuit board segments are torn, only the second flexible circuit board segment can be replaced without replacing the entire circuit board and all the second flexible circuit board segments, thereby further saving production and maintenance costs.

[0010] In some embodiments of the battery sampling device, at least two second circuit connection areas are arranged on opposite sides of the rigid circuit board segment in the thickness direction; at least two second flexible circuit board segments are respectively fixedly connected to opposite sides of the rigid circuit board segment in the thickness direction, and the third acquisition circuit of each second flexible circuit board segment is electrically connected to the second circuit connection area on the corresponding side.

[0011] At least two second circuit connection areas are arranged on opposite sides of the rigid circuit board segment in the thickness direction, at least two second flexible circuit board segments are respectively fixedly connected to opposite sides of the rigid circuit board segment in the thickness direction, and the third acquisition circuit of each second flexible circuit board segment is electrically connected to the second circuit connection area on the corresponding side, which is beneficial to reducing the size of the rigid circuit board segment when arranging second acquisition circuits with the same function and the same number of second circuit connection areas. The smaller size of the rigid circuit board segment facilitates a more reasonable arrangement of the position of the rigid circuit board segment in the battery, and the reasonable arrangement of the position of the rigid circuit board segment is beneficial to a more reasonable division and design of the first flexible circuit board segment and the second flexible circuit board segment.

[0012] In the battery sampling device of some embodiments, a connection portion between the first flexible circuit board segment and the rigid circuit board segment is sealed; and / or a connection portion between the second flexible circuit board segment and the rigid circuit board segment is sealed.

[0013] The connection part between the first flexible circuit board segment and the hard circuit board segment is sealed; and / or the connection part between the second flexible circuit board segment and the hard circuit board segment is sealed, which is beneficial to protect the connection part between the first flexible circuit board segment and the hard circuit board segment and / or the connection part between the second flexible circuit board segment and the hard circuit board segment to prevent short circuit.

[0014] In some embodiments of the battery sampling device, the first flexible circuit board segment, the rigid circuit board segment and the second flexible circuit board segment extend in the same direction and are arranged sequentially, and the first flexible circuit board segment and the second flexible circuit board segment are respectively connected to opposite ends of the rigid circuit board segment.

[0015] The first flexible circuit board segment, the rigid circuit board segment, and the second flexible circuit board segment extend in the same direction and are arranged sequentially, and the first flexible circuit board segment and the second flexible circuit board segment are respectively connected to opposite ends of the rigid circuit board segment, which facilitates the arrangement and mutual connection of the first acquisition circuit of the first flexible circuit board segment, the second acquisition circuit of the rigid circuit board segment, and the third acquisition circuit of the second flexible circuit board segment.

[0016] In the battery sampling device of some embodiments, the circuit board includes one or more second flexible circuit board segments, and at least one second flexible circuit board segment is a double-layer folded flexible circuit board segment.

[0017] At least one of the second flexible circuit board segments is a double-layer folded flexible circuit board segment, which is conducive to arranging more acquisition circuits within a limited width range.

[0018] In the battery sampling device of some embodiments, the circuit board includes one or more second flexible circuit board segments, and at least one second flexible circuit board segment is a single-layer flexible circuit board segment.

[0019] At least one second flexible circuit board segment is a single-layer flexible circuit board segment, and the second flexible circuit board segment does not need to be folded 180 degrees, which is convenient for processing and assembly and not easy to be damaged.

[0020] In the battery sampling device of some embodiments, the circuit board includes one or more second flexible circuit board segments, and at least one second flexible circuit board segment is a double-sided layered flexible circuit board segment.

[0021] At least one second flexible circuit board segment is a double-sided layered flexible circuit board segment, which is conducive to arranging more acquisition circuits within a limited width range without the need for the second flexible circuit board segment to be folded 180 degrees.

[0022] In some embodiments of the battery sampling device, the battery sampling device includes a connector, the connector is fixedly connected to the CMC acquisition board and electrically connected to the CMC acquisition board, and the second flexible circuit board segment is electrically connected to the CMC acquisition board through the connector.

[0023] The second flexible circuit board segment is electrically connected to the CMC acquisition board through a connector, that is, the second flexible circuit board segment can be electrically connected to the CMC acquisition board by plugging into the connector, which is beneficial for fast and accurate electrical connection between the circuit board and the CMC acquisition board.

[0024] In some embodiments of the battery sampling device, the battery sampling device comprises one or more connectors, wherein the connector comprises a double-row interface; and / or at least two connectors are arranged in layers.

[0025] The connector includes a double-row interface and / or at least two connectors arranged in layers, and the second flexible circuit board segment is electrically connected to the CMC acquisition board through at least one connector, which is conducive to arranging more acquisition lines within a limited width range. In addition, when the connector is damaged, the connector and the corresponding second flexible circuit board segment can be disassembled and replaced together without replacing all circuit boards and all connectors (if there are more than two connectors), thereby saving maintenance costs.

[0026] A second aspect of the present application provides a battery, comprising a battery pack having a plurality of battery cells and the battery sampling device of the first aspect of the present application, wherein the battery sampling device is configured to collect operating parameters of the battery pack.

[0027] The battery provided in the present application has the advantages of the battery sampling device provided in the present application.

[0028] In some embodiments of the battery, the battery further comprises a box body, the box body comprises a beam, the battery pack and the battery sampling device are arranged in the box body, and the rigid circuit board segment is fixed on the beam.

[0029] Fixing the rigid circuit board segment on the beam facilitates the circuit board to be stably connected to the battery pack and the CMC acquisition board, so that the battery sampling device can function stably.

[0030] A third aspect of the present application provides an electrical device, comprising the battery of the second aspect of the present application, and the battery is used to provide power to the electrical device.

[0031] The electrical equipment of the present application has the same advantages as the battery and leakage detection connector of the present application.

[0032] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of electrical equipment in some embodiments of the present application.

[0035] Figure 2 Schematic diagram of the exploded structure of batteries according to some embodiments of the present application.

[0036] Figure 3 This is a schematic diagram of the structure in which the battery collection device of some embodiments of the present application is installed on the beam of the battery box.

[0037] Figure 4 for Figure 3 Schematic diagram of the top view structure.

[0038] Figure 5 This is a schematic structural diagram of a battery collection device installed on a beam of a battery box according to other embodiments of the present application.

[0039] Figure 6 This is a schematic structural diagram of a battery collection device installed on a beam of a battery box according to other embodiments of the present application.

[0040] Figure 7 for Figure 6 Schematic diagram of the side structure.

[0041] Figure 8 A schematic diagram of the structure of a flexible circuit board of a battery collection device in related technology.

[0042] Fig. 9 for Figure 8 The schematic diagram of the layout of the flexible circuit board is shown. DETAILED DESCRIPTION

[0043] 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.

[0044] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0045] 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.

[0046] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0047] In the process of developing this application, the inventor discovered that the width of the flexible circuit board in the related art is not enough to arrange all the acquisition lines. Figure 8 Generally, a flexible circuit board 9 having a main body 91 and a branch 92 is used, which is L-shaped as a whole. There is a U-shaped notch between the main body 91 and the branch 92, and the branch 92 is folded 180 degrees at F to be parallel to the main body 91. Fig. 9When manufacturing the flexible circuit board 9, the overall material layout utilization rate is low, which wastes resources and increases costs. In addition, when the flexible circuit board is connected to the dual connector, the U-shaped notch portion where the branch portion 92 and the main body portion 91 are connected is easy to tear. Once the branch portion 92 and the main body portion 91 are torn, the flexible circuit board 9 will be scrapped and the circuit board 9 needs to be replaced as a whole, which increases production and maintenance costs.

[0048] Based on this, Figures 3 to 7 As shown, the present application proposes a battery sampling device 3, including a CMC acquisition board 33, a circuit board 31 and a plurality of sampling pieces 34, the circuit board 31 includes a first flexible circuit board segment 311 connected to the plurality of sampling pieces 34, a hard circuit board segment 312 connected to the first flexible circuit board segment 311 and a second flexible circuit board segment 313 electrically connected to the hard circuit board segment 312, the second flexible circuit board segment 313 is electrically connected to the plurality of sampling pieces 34 through the hard circuit board segment 312 and the first flexible circuit board segment 311, and is electrically connected to the CMC acquisition board 33, so that the information collected by the sampling piece 34 can be transmitted to the CMC acquisition board 33 through the first flexible circuit board segment 311, the hard circuit board segment 312 and the second flexible circuit board segment 313. Since the hard circuit board 312 is provided to connect the first flexible circuit board segment 311 and the second flexible circuit board segment 313, the first flexible circuit board segment 311 and the second flexible circuit board segment 313 are smaller in length and width directions compared to the flexible circuit board 9 of the prior art, and the utilization rate of the overall material layout is improved during processing and manufacturing, which is conducive to reducing processing costs and saving resources. In addition, even if the second flexible circuit board segment 313 also includes two foldable parts, when the second flexible circuit board segment 313 is electrically connected to the CMC acquisition board 33, for example, when connected through a double connector or through a welding connection, once the two parts are torn, only the second flexible circuit board segment 313 can be replaced without replacing the entire circuit board 31, thereby saving production and maintenance costs.

[0049] Furthermore, the present application provides a battery having the battery sampling device and an electrical device having the battery.

[0050] The battery is configured to provide electrical energy to electrical devices. Electrical devices may be, but are not limited to, mobile phones, portable devices, laptop computers, battery vehicles, electric vehicles, ships, spacecraft, electric toys, and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0051] The battery of the embodiment of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0052] In the present application, battery cells may include lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application. Battery cells may be flat, rectangular, or in other shapes, which are not limited in the embodiments of the present application. Battery cells are generally packaged as square battery cells and soft-pack battery cells, which are not limited in the embodiments of the present application.

[0053] like Figures 3 to 7 As shown, the battery sampling device 3 provided in the embodiment of the present application includes a CMC acquisition board 33, a circuit board 31 and a plurality of sampling pieces 34. The circuit board 31 includes: a first flexible circuit board segment 311, including a first acquisition circuit, a plurality of sampling pieces 34 are connected to the first flexible circuit board segment 311 and are electrically connected to the first acquisition circuit; a hard circuit board segment 312, including a second acquisition circuit, the second acquisition circuit has a first circuit connection area and a second circuit connection area, the hard circuit board segment 312 is fixedly connected to the first flexible circuit board segment 311, and the first circuit connection area of ​​the second acquisition circuit is electrically connected to the first acquisition circuit; and a second flexible circuit board segment 313, including a third acquisition circuit, the second flexible circuit board segment 313 is fixedly connected to the hard circuit board segment 312, and the third acquisition circuit is electrically connected to the second circuit connection area, and the second flexible circuit board segment 313 is electrically connected to the CMC acquisition board 33.

[0054] The hard circuit board segment 312 may be, for example, a printed circuit board (PCB), the first circuit connection area and the second circuit connection area may be, for example, pad areas; the sampling piece 34 may be, for example, a nickel sheet.

[0055] In the battery sampling device 3 of the embodiment of the present application, the circuit board 31 includes a first flexible circuit board segment 311 connected to a plurality of sampling pieces 34, a hard circuit board segment 312 connected to the first flexible circuit board segment 311, and a second flexible circuit board segment 313 electrically connected to the hard circuit board segment 312. The second flexible circuit board segment 313 is electrically connected to the plurality of sampling pieces 34 through the hard circuit board segment 312 and the first flexible circuit board segment 311, and is electrically connected to the CMC acquisition board 33, so that the information collected by the sampling piece 34 can be transmitted to the CMC acquisition board 33 through the first flexible circuit board segment 311, the hard circuit board segment 312, and the second flexible circuit board segment 313. Since the hard circuit board 312 is provided to connect the first flexible circuit board segment 311 and the second flexible circuit board segment 313, the first flexible circuit board segment 311 and the second flexible circuit board segment 313 are smaller in length and width directions compared to the flexible circuit board 9 of the prior art, and the utilization rate of the overall material layout is improved during processing and manufacturing, which is conducive to reducing processing costs and saving resources. In addition, even if the second flexible circuit board segment 313 also includes two foldable parts, when the second flexible circuit board segment 313 is electrically connected to the CMC acquisition board 33, for example, when the two parts are torn when connected by a double connector or by welding, only the second flexible circuit board segment 313 can be replaced without replacing the entire circuit board 31, thereby saving production and maintenance costs. In addition, the hard circuit board segment 312 and the second flexible circuit board segment 313 can be designed universally, and an appropriate number of acquisition lines can be designed. When used for different types of batteries, when the acquisition lines are sufficient, only the first flexible circuit board segment 311 needs to be designed, thereby simplifying the design and manufacturing process.

[0056] In the battery sampling device of some embodiments, the second acquisition circuit of the hard circuit board segment 312 includes at least two second circuit connection areas; the circuit board 31 includes at least two second flexible circuit board segments 313, the at least two second flexible circuit board segments 313 are arranged in layers and are respectively fixedly connected to the hard circuit board segment 312, and the third acquisition circuits of the at least two second flexible circuit board segments 313 are respectively electrically connected to the at least two second circuit connection areas.

[0057] The second acquisition circuit of the rigid circuit board segment 312 includes at least two second circuit connection areas, and the provision of two or more second flexible circuit board segments is conducive to further solving the problem that the width of the flexible circuit board is insufficient to arrange all acquisition circuits. In addition, the width dimension of the second flexible circuit board can be further reduced, which is conducive to further improving the utilization rate of the overall material layout. When part of the second flexible circuit board segments among the two or more second flexible circuit board segments are torn, only the second flexible circuit board segment can be replaced without replacing the entire circuit board and all the second flexible circuit board segments, thereby further saving production and maintenance costs.

[0058] like Figures 3 to 7 As shown, in some embodiments of the battery sampling device, at least two second circuit connection areas are arranged on opposite sides of the rigid circuit board segment 312 in the thickness direction; at least two second flexible circuit board segments 313 are respectively fixedly connected to opposite sides of the rigid circuit board segment 312 in the thickness direction, and the third acquisition circuit of each second flexible circuit board segment 313 is electrically connected to the second circuit connection area on the corresponding side.

[0059] At least two second circuit connection areas are arranged on opposite sides of the rigid circuit board segment 312 in the thickness direction, and at least two second flexible circuit board segments 313 are fixedly connected to opposite sides of the rigid circuit board segment 312 in the thickness direction, respectively, and the third acquisition circuit of each second flexible circuit board segment 313 is electrically connected to the second circuit connection area on the corresponding side, which is beneficial to reducing the size of the rigid circuit board segment 312 when arranging second acquisition circuits with the same function and the same number of second circuit connection areas. The smaller size of the rigid circuit board segment 312 facilitates a more reasonable arrangement of the position of the rigid circuit board segment 312 in the battery, and the reasonable arrangement of the position of the rigid circuit board segment 312 is beneficial to a more reasonable division and design of the first flexible circuit board segment 311 and the second flexible circuit board segment 313.

[0060] In the battery sampling device 3 of some embodiments, the connection between the first flexible circuit board segment 311 and the rigid circuit board segment 312 is sealed; and / or the connection between the second flexible circuit board segment 313 and the rigid circuit board segment 312 is sealed.

[0061] The sealing method may be, for example, by applying sealant to the connection between the first flexible circuit board segment 311 and the rigid circuit board segment 312 and / or to the connection between the second flexible circuit board segment 313 and the rigid circuit board segment 312 .

[0062] The connection portion between the first flexible circuit board segment 311 and the hard circuit board segment 312 is sealed; and / or the connection portion between the second flexible circuit board segment 313 and the hard circuit board segment 312 is sealed, which is beneficial to protect the connection portion between the first flexible circuit board segment 311 and the hard circuit board segment 312 and / or the connection portion between the second flexible circuit board segment 313 and the hard circuit board segment 312 to prevent short circuit.

[0063] like Figures 3 to 7 As shown, in some embodiments of the battery sampling device 3, the first flexible circuit board segment 311, the hard circuit board segment 312 and the second flexible circuit board segment 313 extend in the same direction and are arranged sequentially, and the first flexible circuit board segment 311 and the second flexible circuit board segment 313 are respectively connected to opposite ends of the hard circuit board segment 312.

[0064] The first flexible circuit board segment 311, the hard circuit board segment 312, and the second flexible circuit board segment 313 extend in the same direction and are arranged sequentially, and the first flexible circuit board segment 311 and the second flexible circuit board segment 313 are respectively connected to the opposite ends of the hard circuit board segment 312, which is beneficial to the arrangement and mutual connection of the first acquisition circuit of the first flexible circuit board segment 311, the second acquisition circuit of the hard circuit board segment 312, and the third acquisition circuit of the second flexible circuit board segment 313.

[0065] like Figure 3 and Figure 4 As shown, in the battery sampling device 3 of some embodiments, the circuit board 31 includes one or more second flexible circuit board segments 313 , and at least one second flexible circuit board segment 313 is a double-layer folded flexible circuit board segment 313A.

[0066] At least one second flexible circuit board segment 313 is a double-layer folded flexible circuit board segment 313A, which is conducive to arranging more acquisition circuits within a limited width range.

[0067] like Figure 5 As shown, in the battery sampling device 3 of some embodiments, the circuit board 31 includes one or more second flexible circuit board segments 313 , and at least one second flexible circuit board segment 313 is a single-layer flexible circuit board segment 313B.

[0068] At least one second flexible circuit board segment 313 is a single-layer flexible circuit board segment 313B, and the second flexible circuit board segment 313 does not need to be folded 180 degrees, which is convenient for processing and assembly and not easy to be damaged.

[0069] like Figure 6 and Figure 7 As shown, in the battery sampling device 3 of some embodiments, the circuit board 31 includes one or more second flexible circuit board segments 313 , and at least one second flexible circuit board segment 313 is a double-sided layered flexible circuit board segment 313C.

[0070] At least one second flexible circuit board segment 313 is a double-sided layered flexible circuit board segment 313C, which is conducive to arranging more acquisition circuits within a limited width range without the need for the second flexible circuit board segment 313 to be folded 180 degrees.

[0071] like Figures 3 to 7 As shown, in some embodiments of the battery sampling device 3, the battery sampling device 3 includes a connector 32, which is fixedly connected to the CMC acquisition board 33 and electrically connected to the CMC acquisition board 33; the second flexible circuit board segment 313 is electrically connected to the CMC acquisition board 33 through the connector 32.

[0072] The second flexible circuit board segment is electrically connected to the CMC acquisition board through a connector, that is, the second flexible circuit board segment can be electrically connected to the CMC acquisition board by plugging into the connector, which is beneficial for fast and accurate electrical connection between the circuit board and the CMC acquisition board.

[0073] In the battery sampling device of some embodiments, the battery sampling device 3 includes one or more connectors 32 , wherein the connector includes a double-row interface; and / or at least two connectors are arranged in layers.

[0074] The connector 32 includes a double-row interface and / or at least two connectors 32 are arranged in layers, and the second flexible circuit board segment 313 is electrically connected to the CMC acquisition board 33 through at least one connector 32, which is conducive to arranging more acquisition lines within a limited width range. In addition, when the connector 32 is damaged, the connector 32 and the corresponding second flexible circuit board segment 313 can be disassembled and replaced together without replacing all circuit boards and all connectors 32 (if there are more than two connectors 32), thereby saving maintenance costs.

[0075] like Figure 1 and Figure 2 As shown, the second aspect of the present application provides a battery B, including a battery pack 2 having a plurality of battery cells 20 and a battery sampling device 3 according to the first aspect of the present application, wherein the battery sampling device 3 is configured to collect operating parameters of the battery pack 2 .

[0076] The battery B provided in the present application has the advantages of the battery sampling device 3 provided in the present application.

[0077] like Figures 2 to 7 As shown, in some embodiments of the battery B, the battery further includes a box body 1 , the box body 1 includes a beam 13 , the battery pack 2 and the battery sampling device 3 are arranged in the box body 1 , and the hard circuit board segment 312 is fixed on the beam 13 .

[0078] Fixing the hard circuit board segment 312 on the beam 13 facilitates the circuit board 31 to be stably connected to the battery pack 2 and the CMC collection board 33, so that the battery sampling device 3 can function stably.

[0079] like Figure 1 As shown, the second aspect of the present application provides an electrical device, including the battery B of the first aspect of the present application, and the battery B is used to provide power to the electrical device.

[0080] The electrical equipment of the present application has the same advantages as the battery and leakage detection connector of the present application.

[0081] The following combination Figures 1 to 7 The battery sampling device 3, the battery B and the electrical equipment having the battery B in some embodiments of the present application are described in more detail.

[0082] In the following description of the embodiment, the first direction X refers to the length direction of the battery B, corresponding to Figure 2 The second direction Y is perpendicular to the first direction X and is the width direction of the battery B, corresponding to Figure 2 The third direction Z is perpendicular to the first direction X and the second direction Y and is the height direction of the battery B, corresponding to Figure 3 The up-down direction also corresponds to the thickness direction of the rigid circuit board segment 312 .

[0083] Please refer to Figure 1 . Figure 1 The schematic diagram of the structure of the electric device vehicle D provided in some embodiments of the present application. The vehicle D can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Figure 2 The vehicle D is provided with a battery B inside, and the battery B can be provided at the bottom, head or tail of the vehicle D. The battery B can be used for powering the vehicle D, for example, it can be used as an operating power source of the vehicle D.

[0084] In some embodiments of the present application, battery B can not only serve as an operating power source for vehicle D, but also serve as a driving power source for vehicle D, replacing or partially replacing fuel or natural gas to provide driving power for vehicle D.

[0085] Please refer to Figure 2 . Figure 2 The schematic diagram of the exploded structure of the battery B provided in some embodiments of the present application is as follows. The battery B is in the form of a battery pack, including a box body 1 and a battery cell 20 accommodated in the box body 1.

[0086] like Figure 2 As shown, the box body 1 includes a box shell 11, a box cover 12 buckled on the box shell 11, and a beam 13 arranged in the box shell 11. The box body 1 is used to provide a storage space for the battery cell 20. In the above embodiments, the box body 1 is a rectangular parallelepiped as a whole. In embodiments not shown in the figure, the box body 1 can also be other shapes, such as a cylinder. In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0087] The battery cell mainly includes a battery core, a shell and an end cap assembly. The battery core may include one or two or more electrode assemblies. The battery core is encapsulated in the housing space of the shell through the end cap of the end cap assembly, and the housing space is filled with electrolyte. The electrode assembly is arranged in the housing space of the shell. The electrode assembly is the component in the battery cell where the electrochemical reaction occurs.

[0088] In the battery B, there are multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 1.

[0089] like Figure 2 As shown, the battery B may be a battery pack 2 formed by connecting a plurality of battery cells 20 in series, in parallel or in mixed connection. The battery pack 2 may be in the form of a battery module. A plurality of battery packs 2 are then connected in series, in parallel or in mixed connection to form a whole, and are contained in the box 1. The beam 13 is used to divide the containing space into a plurality of subspaces, each of which can contain one or more battery packs 2. The battery B may also include other structures, for example, the battery B may also include a busbar component for realizing electrical connection between the plurality of battery cells 20.

[0090] Figures 3 to 7 In each of the illustrated embodiments, the battery sampling device 3 includes a circuit board 31 , a plurality of sampling components 34 , at least one connector 32 and a CMC acquisition board 33 .

[0091] Figures 3 to 7 In each of the illustrated embodiments, the circuit board 31 includes a first flexible circuit board segment 311, a rigid circuit board segment 312, and two second flexible circuit board segments 313. The first flexible circuit board segment 311 includes a first acquisition circuit. The rigid circuit board segment 312 is a printed circuit board, including a second acquisition circuit. The first end of the second acquisition circuit along the first direction X (corresponding to Figure 3 , Figures 5 to 7 The right end in the third direction Z (corresponding to Figure 3 , Figures 5 to 7 A first circuit connection area is provided on the upper side of the second acquisition circuit, and a portion of the second acquisition circuit away from the first end along the first direction X outside the first circuit connection area is divided into two circuit layers along the thickness direction of the hard circuit board segment 312, that is, the third direction Z. At the second end of the second acquisition circuit along the first direction X (corresponding to Figure 3 , Figures 5 to 7 ), each circuit layer has a second circuit connection area. The first end of the rigid circuit board segment 312 along the first direction X is fixedly connected to the first flexible circuit board segment 311, and the first circuit connection area of ​​the second acquisition circuit is electrically connected to the first acquisition circuit. Each second flexible circuit board segment 313 includes a third acquisition circuit. The two second flexible circuit board segments 313 are arranged in layers up and down along the third direction Z and are respectively fixedly connected to the opposite sides of the second end of the rigid circuit board segment 312 along the first direction X. And the third acquisition circuits of the two second flexible circuit board segments 313 are respectively electrically connected to the second circuit connection areas of the two circuit layers of the second acquisition circuit.

[0092] Figures 3 to 7 In each embodiment shown, a plurality of sampling members 34 are connected to the first flexible circuit board segment 311 and electrically connected to the first acquisition circuit, so that the two second flexible circuit board segments 313 are electrically connected to the plurality of sampling members 34 through the hard circuit board segment 312 and the first flexible circuit board segment 311. The sampling member 34 is a nickel sheet.

[0093] At least one connector 32 is fixedly connected to the CMC acquisition board 33 and is electrically connected to the CMC acquisition board 33 .

[0094] Figures 3 to 7 In the illustrated embodiment, the connector 32 includes a dual row interface. Figure 3 to Figure 4 and Figure 6 to Figure 7 In the illustrated embodiment, two connectors 32 are arranged in layers one above the other along the third direction Z. Figure 5 The illustrated embodiment includes a connector 32 .

[0095] Figures 3 to 7 In each of the illustrated embodiments, the two second flexible circuit board segments 313 are electrically connected to the CMC acquisition board 33 via at least one connector 32 .

[0096] The rigid circuit board segment 312 is detachably fixed to the top surface of the beam 13 by screws. The first flexible circuit board segment 311 and the two second flexible circuit board segments 313 are connected to the rigid circuit board segment 312 by welding to achieve fixed connection and electrical connection. The welding position is sealed by sealant. Figure 4 W represents the weld position. The weld positions of other embodiments are Figure 4 The corresponding embodiments are similar.

[0097] Figures 3 to 7 The main difference between the illustrated embodiments is that the second flexible circuit board segments 313 of the embodiments are different and the number of connectors connected to the second flexible circuit board segments 313 is correspondingly different. The difference is described in detail below.

[0098] Figure 3 and Figure 4 In the illustrated embodiment, the two second flexible circuit board segments 313 are both double-layer folded flexible circuit board segments 313A. The double-layer folded flexible circuit board segment 313A includes a main body 313A1 and a branch 313A2 that are folded 180 degrees to each other. Two connectors 32 are provided on the CMC acquisition board 33 and arranged in layers up and down. Each connector 32 includes an upper and lower double-row interface. The two double-layer folded flexible circuit board segments 313A are respectively connected to the two connectors 32. The main body 313A1 and the branch 313A2 of each double-layer folded flexible circuit board segment 313A are respectively connected to the upper and lower double-row interfaces of the corresponding connector 32.

[0099] Figure 5 In the embodiment shown, the two second flexible circuit board segments 313 are both single-layer flexible circuit board segments 313B. A connector 32 is provided on the CMC acquisition board 33, including upper and lower double-row interfaces, and the two single-layer flexible circuit board segments 313B are respectively connected to the upper and lower double-row interfaces of the corresponding connector 32.

[0100] Figure 6 and Figure 7 In the illustrated embodiment, the two second flexible circuit board segments 313 are both double-sided layered flexible circuit board segments 313C. The double-sided layered flexible circuit board segment 313C is a single layer at one end close to the rigid circuit board segment 312, and is divided into upper and lower layers 313C1 and 313C2 at one end close to the connector 32. Two connectors 32 are provided on the CMC acquisition board 33 and arranged in layers up and down. Each connector 32 includes upper and lower double-row interfaces, and the two double-sided layered flexible circuit board segments 313C are respectively connected to the two connectors 32. The upper and lower layers 313C1 and 313C2 of each double-sided layered flexible circuit board segment 313C are respectively connected to the upper and lower double-row interfaces of the corresponding connector 32.

[0101] This application Figures 3 to 7 In the corresponding embodiment, a second flexible circuit board segment 313 is provided on both sides of the rigid circuit board segment 312 in the thickness direction. In an embodiment not shown in the figure, at least part of the second circuit connection area of ​​the second acquisition circuit of the rigid circuit board segment 312 can be arranged at different positions on the same side of the rigid circuit board segment 312. The number of the second flexible circuit board segments 313 can be set to one or more as needed. Taking the arrangement of three second flexible circuit board segments 313 as an example, the three second flexible circuit board segments 313 can be arranged in layers and electrically connected to the three second circuit connection areas on the same side of the rigid circuit board segment 312, or they can be electrically connected to the two second circuit connection areas on one side and one second circuit connection area on the other side of the rigid circuit board segment 312.

[0102] In addition, the present application does not limit the number of first flexible circuit board segments included in the circuit board. For example, it may include only one first flexible circuit board segment, or it may include two or more first flexible circuit board segments in parallel. When it includes more than two first flexible circuit board segments, the first flexible circuit board segments may be arranged side by side or in a stacked manner.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution requested for protection in this application.

Claims

1. A battery sampling device (3), comprising: A CMC acquisition board (33), a circuit board (31) and a plurality of sampling components (34), wherein the circuit board (31) comprises: A first flexible circuit board segment (311) comprising a first acquisition circuit, wherein the plurality of sampling elements (34) are connected to the first flexible circuit board segment (311) and are electrically connected to the first acquisition circuit; a rigid circuit board segment (312), comprising a second acquisition circuit, the second acquisition circuit having a first circuit connection area and a second circuit connection area, the rigid circuit board segment (312) being fixedly connected to the first flexible circuit board segment (311), and the first circuit connection area of ​​the second acquisition circuit being electrically connected to the first acquisition circuit; and The second flexible circuit board segment (313) comprises a third acquisition circuit, the second flexible circuit board segment (313) is fixedly connected to the hard circuit board segment (312), the third acquisition circuit is electrically connected to the second circuit connection area, and the second flexible circuit board segment (313) is electrically connected to the CMC acquisition board (33).

2. The battery sampling device (3) according to claim 1, characterized in that: The second acquisition circuit of the hard circuit board segment (312) comprises at least two second circuit connection areas; The circuit board (31) comprises at least two of the second flexible circuit board segments (313), the at least two second flexible circuit board segments (313) being arranged in layers and respectively fixedly connected to the hard circuit board segment (312), and the third acquisition circuits of the at least two second flexible circuit board segments (313) being respectively electrically connected to the at least two second circuit connection areas.

3. The battery sampling device (3) according to claim 2, characterized in that: The at least two second circuit connection areas are arranged on two opposite sides of the rigid circuit board segment (312) in a thickness direction; The at least two second flexible circuit board segments (313) are respectively fixedly connected to two opposite sides of the rigid circuit board segment (312) in a thickness direction, and the third acquisition circuit of each second flexible circuit board segment (313) is electrically connected to the second circuit connection area on the corresponding side.

4. The battery sampling device (3) according to claim 1, characterized in that: The connection portion between the first flexible circuit board segment (311) and the hard circuit board segment (312) is sealed; and / or The connection portion between the second flexible circuit board segment (313) and the hard circuit board segment (312) is sealed.

5. The battery sampling device (3) according to claim 1, characterized in that: The first flexible circuit board segment (311), the hard circuit board segment (312) and the second flexible circuit board segment (313) extend in the same direction and are arranged in sequence; the first flexible circuit board segment (311) and the second flexible circuit board segment (313) are respectively connected to opposite ends of the hard circuit board segment (312).

6. The battery sampling device (3) according to claim 1, characterized in that: The circuit board (31) comprises one or more second flexible circuit board segments (313), and at least one of the second flexible circuit board segments (313) is a double-layer folded flexible circuit board segment (313A).

7. The battery sampling device (3) according to claim 1, characterized in that: The circuit board (31) comprises one or more second flexible circuit board segments (313), and at least one of the second flexible circuit board segments (313) is a single-layer flexible circuit board segment (313B).

8. The battery sampling device (3) according to claim 1, characterized in that: The circuit board (31) comprises one or more second flexible circuit board segments (313), and at least one of the second flexible circuit board segments (313) is a double-sided layered flexible circuit board segment (313C).

9. The battery sampling device (3) according to any one of claims 1 to 8, characterized in that: The battery sampling device (3) comprises a connector (32), wherein the connector (32) is fixedly connected to the CMC acquisition board (33) and is electrically connected to the CMC acquisition board (33); The second flexible circuit board segment (313) is electrically connected to the CMC acquisition board (33) via the connector (32).

10. The battery sampling device (3) according to claim 9, characterized in that: The battery sampling device (3) comprises one or more connectors (32), wherein: At least one of the connectors (32) comprises a double-row interface; and / or At least two of the connectors (32) are arranged in layers.

11. A battery (B), characterized in that: A battery pack (2) having a plurality of battery cells (20) and a battery sampling device (3) according to any one of claims 1 to 10, wherein the battery sampling device (3) is configured to collect operating parameters of the battery pack (2).

12. The battery (B) according to claim 11, characterized in that: It also comprises a box body (1), the box body (1) comprising a beam (13), the battery pack (2) and the battery sampling device (3) are arranged in the box body (1), and the hard circuit board segment (312) is fixed on the beam (13).

13. An electrical equipment, characterized in that: The invention comprises the battery (B) according to claim 11 or 12, wherein the battery (B) is used to provide power to the electrical device.

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