Sampling circuit board, battery and electric device

Abstract

The invention relates to a sampling circuit board, a battery and an electric device. The sampling circuit board is used for being connected with a single battery and comprises a board body, a connecting structure and an adapter. The connecting structure comprises a protective structure and a switching part, the protective structure is provided with a head end connected with the plate body and a tail end arranged relative to the head end, and the protective structure extends between the head end and the tail end in a non-linear mode. And the switching parts are connected between the tail ends of the corresponding protection structures and the plate body. And the adapting pieces are arranged on the corresponding adapting parts and are used for being electrically connected with the corresponding battery monomers. Therefore, the displacement generated when the battery monomers are expanded can be absorbed or transferred by utilizing the protection structure which is arranged in a non-linear extending manner, even the displacement generated when the battery monomers are expanded can be better absorbed or transferred due to deformation of the protection structure, so that the risk that the adapter is broken or falls off from the plate body can be reduced; and the sampling reliability of the sampling circuit board is improved.

Description

Technical Field

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

[0002] In the related art, in order to ensure the safe operation of the battery, a sampling circuit board is usually used to sample information such as the voltage and / or temperature of the battery cell.

[0003] However, traditional sampling circuit boards have a high risk of sampling failure. Summary of the Invention

[0004] Based on this, it is necessary to provide a sampling circuit board, a battery and an electrical device to address the problem of high risk of sampling failure of traditional sampling circuit boards.

[0005] According to a first aspect of the present application, a sampling circuit board is provided for connecting a battery cell. The sampling circuit board includes a board body, a connecting structure, and an adapter. The connecting structure includes a protective structure and an adapter portion. The protective structure has a head end connected to the board body and a terminal end disposed relative to the head end. The protective structure extends nonlinearly between the head end and the terminal end, and the adapter portion is connected between the terminal end of the corresponding protective structure and the board body. The adapter portion is disposed on the corresponding adapter portion and is used to electrically connect to the corresponding battery cell.

[0006] In the technical solution of the present application, since the protective structure is extended in a non-linear shape between the head end and the tail end, when the battery cell expands, the adapter connected to the battery cell and provided on the corresponding adapter portion will transfer the displacement generated by the expansion of the battery cell to the corresponding adapter portion, and then to the corresponding protective structure. The protective structure extending in a non-linear shape can be used to absorb or transfer the displacement generated by the expansion of the battery cell, and even the protective structure can be deformed in multiple directions or the protective structure has a tendency to deform in a linear shape, so that the protective structure can better absorb or transfer the displacement generated by the expansion of the battery cell, thereby reducing the risk of the adapter breaking or falling off the board, and improving the sampling reliability of the sampling circuit board.

[0007] In one embodiment, the protective structure extends in a curved manner between the head and tail ends. This curved arrangement reduces stress concentration on the protective structure, thereby increasing its strength and toughness and allowing it to better absorb or divert displacement caused by expansion of the battery cells.

[0008] In one embodiment, the head end and the tail end are spaced apart along the longitudinal extension direction of the board; and / or, the head end and the tail end are spaced apart along a first direction; the first direction intersects the longitudinal extension direction of the board and is parallel to the plane of the top surface of the board. When the battery cell expands, the protective structure can deform along the first direction and along the longitudinal extension direction of the board, effectively absorbing the displacement caused by the battery cell expansion, thereby better reducing the risk of the adapter breaking or falling off the board, and thus improving the sampling reliability of the sampling circuit board.

[0009] In one embodiment, the protective structure includes at least two deformable parts arranged along a first direction, and connecting parts respectively connected to the two adjacent deformable parts. The first direction intersects with the longitudinal extension direction of the plate body and is parallel to the plane where the top surface of the plate body is located. Since at least two deformable parts are arranged in the first direction, and two adjacent deformable parts are connected by the connecting part, when the battery cell expands, the adapter connected to the battery cell and provided on the corresponding protective structure will be displaced more in the longitudinal extension direction of the plate body, which can drive the at least two deformable parts to expand or contract along the longitudinal extension direction of the plate body, and can well absorb the displacement generated by the expansion of the battery cell, thereby better reducing the risk of the adapter breaking or falling off the plate body, thereby improving the sampling reliability of the sampling circuit board.

[0010] In one embodiment, the protective structure includes at least three deformable portions arranged along a first direction, with two adjacent connecting portions located at opposite ends of the corresponding deformable portions along the longitudinal extension direction of the plate. Because the two adjacent connecting portions are located at opposite ends of the corresponding deformable portions along the longitudinal extension direction of the plate, the protective structure can be substantially S-shaped. This improves the strength of the protective structure, facilitates expansion or contraction of the protective structure along the longitudinal extension direction of the plate when the battery cells expand, and increases the deformation of the protective structure along the longitudinal extension direction of the plate. This facilitates the application of the sampling circuit board in scenarios with large expansion displacement, effectively reduces the risk of the adapter breaking or falling off the plate, and thereby improves the sampling reliability of the sampling circuit board.

[0011] In one embodiment, the connecting portion extends in a curved manner from one end of an adjacent deformable portion to the same end of another adjacent deformable portion along the longitudinal extension direction of the board. This curved transition between adjacent deformable portions reduces stress concentration in the protective structure, improves its strength and toughness, and allows the protective structure to better absorb displacement caused by battery cell expansion. This further reduces the risk of the adapter breaking or falling off the board, thereby improving the sampling reliability of the sampling circuit board.

[0012] In one embodiment, the protective structure includes at least three deformable portions arranged along a first direction, with two adjacent connecting portions having different bending directions. The different bending directions of the two adjacent connecting portions improve the strength and toughness of the protective structure while also making it easier to expand or contract the protective structure along the longitudinal extension of the board when the battery cell expands. This also increases the deformation of the protective structure along the longitudinal extension of the board, facilitating the application of the sampling circuit board in scenarios with large expansion displacements. This effectively reduces the risk of the adapter breaking or falling off the board, thereby improving the sampling reliability of the sampling circuit board.

[0013] In one embodiment, at least two deformable portions are spaced apart along the first direction. This allows two adjacent deformable portions to be better connected via the arc-shaped transition of the connecting portion. Furthermore, it provides space for the deformable portions to deform, allowing the protective structure to better absorb or transfer the displacement caused by battery cell expansion. This reduces the risk of the adapter breaking or falling off the board, thereby improving the sampling reliability of the sampling circuit board.

[0014] In one embodiment, the deformable portion extends longitudinally along the longitudinal direction of the plate. When a battery cell expands, the adapter connected to the battery cell and disposed on the corresponding protective structure will displace more in the longitudinal direction of the plate. Therefore, the deformable portion extending longitudinally along the longitudinal direction of the plate can better absorb the displacement caused by the battery cell expansion, thereby further reducing the risk of the adapter breaking or falling off the plate, thereby improving the sampling reliability of the sampling circuit board.

[0015] In one embodiment, the sampling circuit board includes multiple connection structures and multiple adapters corresponding to the connection structures. Along the longitudinal extension of the board, a protective structure of a given connection structure is connected to an adapter portion, and the adapter is mounted on the adapter portion of the corresponding connection structure. Each protective structure can absorb the displacement caused by the expansion of the corresponding battery cell, reducing the risk of the corresponding adapter breaking or falling off the board, thereby further improving the sampling reliability of the sampling circuit board.

[0016] In one embodiment, a sampling circuit board includes two sets of connection structure groups spaced apart along a first direction, and two sets of adapter assemblies corresponding one-to-one to the two connection structure groups. The connection structure groups include a plurality of protective structures spaced apart along the longitudinal extension direction of the board body, and a plurality of adapter portions disposed one-to-one on one side of the plurality of protective structures along the longitudinal extension direction of the board body. The adapter assembly includes a plurality of adapter components, with the adapter components of the connection structure groups corresponding one-to-one to the adapter components of the corresponding adapter assemblies. The first direction intersects the longitudinal extension direction of the board body and is parallel to the plane of the top surface of the board body. The plurality of protective structures of the connection structure groups are spaced apart along the longitudinal extension direction of the board body, and the plurality of adapter portions of the connection structure groups are also spaced apart along the longitudinal extension direction of the board body. This facilitates the spaced-apart arrangement of the plurality of battery cells along the longitudinal extension direction of the board body, allowing the adapter components on the plurality of adapter portion protective structures to be electrically connected to the corresponding battery cells. This facilitates the sampling circuit board in collecting voltage / current signals from the plurality of battery cells while also optimizing the layout of the sampling circuit board and the plurality of battery cells.

[0017] In one embodiment, the sampling circuit board further includes a weak portion provided on the board body and corresponding to the adapter portion, wherein the weak portion is connected between the side of the corresponding adapter portion away from the adjacent end and the board body. On the one hand, the protective structure can be used to absorb or transfer the displacement generated when the battery cell expands, thereby reducing the risk of the adapter breaking or falling off the board body, thereby improving the sampling reliability of the sampling circuit board. On the other hand, since the adapter is connected to the weak portion on the side away from the protective structure, the displacement generated when the battery cell expands can also be transferred to the weak portion, and the weak portion can also be used to absorb or transfer the displacement generated when the battery cell expands. For example, the displacement generated when the battery cell expands can cause cracks to form on the weak portion or even cause the weak portion to separate from the board body, while the adapter can still be well connected to the board body through the corresponding protective structure, which is conducive to better reducing the risk of the adapter breaking or falling off the board body, thereby improving the sampling reliability of the sampling circuit board.

[0018] In some embodiments, along the longitudinal extension direction of the plate body, the weak portion is connected between a side of the corresponding transition portion away from the adjacent end and the plate body.

[0019] In one embodiment, the weak portion has a dimension of 0.6 mm to 1.2 mm along a first direction that intersects the longitudinal extension of the plate and is parallel to the plane of the plate's top surface. Setting the dimension of the weak portion along the first direction within an appropriate range not only reduces its width, but also allows it to break or detach from the plate under a predetermined external force, thereby facilitating the use of the weak portion to absorb or transfer displacement caused by battery cell expansion.

[0020] In one embodiment, along the first direction, the size of the weak portion is 0.8 mm-1.0 mm.

[0021] In one embodiment, the plate body includes a first lifting portion corresponding to the weak portion, and the weak portion is connected between the corresponding first lifting portion and the corresponding transition portion along the longitudinal extension direction of the plate body. The first lifting portion can be used to exert a certain lifting force on the transition portion, thereby improving the horizontality of the transition portion relative to the horizontal plane, reducing the possibility of misalignment of the transition member on the transition portion during connection to the corresponding battery cell, thereby facilitating a better connection between the transition member on the transition portion and the corresponding battery cell.

[0022] In one embodiment, the plate body further includes a second lifting portion corresponding to the protective structure, with a head end and a tail end spaced apart along the longitudinal extension direction of the plate body. The second lifting portion is connected to the head end of the corresponding protective structure, the tail end of the protective structure is connected to one end of the corresponding adapter portion, and the other end of the adapter portion is connected to the corresponding first lifting portion via a corresponding weakened portion. The first and second lifting portions can be used to lift opposite sides of the adapter portion along the longitudinal extension direction of the plate body, respectively, to improve the levelness of the adapter portion relative to the horizontal plane, thereby reducing the possibility of misalignment of the adapter portion on the adapter portion during connection to the corresponding battery cell, thereby facilitating better connection of the adapter portion on the adapter portion to the corresponding battery cell.

[0023] In one embodiment, two slots are defined between the first lifting portion, the corresponding weak portion, and the corresponding transition portion. The two slots have two side walls disposed opposite each other along a first direction with the corresponding weak portion as the slot bottom walls. The first direction intersects the longitudinal extension of the plate and is parallel to the plane of the top surface of the plate. Because the two slots have two side walls disposed opposite each other along the first direction with the corresponding weak portion as the slot bottom walls, the weak portion is located between the two slots, making it easier for the weak portion to break or detach from the plate under a predetermined external force, thereby facilitating the use of the weak portion to absorb or transfer displacement caused by expansion of the battery cell.

[0024] In one embodiment, the bottom walls of the two empty slots are recessed toward each other along a first direction. The weak portion located at the bottom wall of the empty slot has a smaller dimension along the first direction, which facilitates the weak portion breaking or detaching from the plate under a predetermined external force, thereby facilitating the use of the weak portion to absorb or transfer displacement caused by expansion of the battery cell.

[0025] In one embodiment, the sidewalls of the empty slots include a converging portion, which gradually decreases in size along the radial direction of the slot opening as it approaches the other empty slot along a first direction. This converging portion is equivalent to forming a pointed tip on the slot wall, facilitating easier rupture or separation of the weak portion from the plate under a predetermined external force, thereby facilitating the use of the weak portion to absorb or transfer displacement caused by expansion of the battery cell.

[0026] In one embodiment, the board body, protective structure, transition portion, and weak portion are an integrated structure. The board body, protective structure, transition portion, and weak portion can be formed in one piece, for example, using a corresponding mold to form the board body, protective structure, transition portion, and weak portion in one piece, thereby improving the production efficiency of the sampling circuit board.

[0027] In one embodiment, the weak portion is configured to be at least partially detached from the board under a predetermined external force. The board and the protective structure can be formed in an integral manner, which can improve the production efficiency of the sampling circuit board.

[0028] In one embodiment, the sidewall of the transition portion on the same side along the first direction is flush with the sidewall of the corresponding protective structure on the same side along the first direction; the first direction intersects the longitudinal extension direction of the plate body and is parallel to the plane of the top surface of the plate body. This facilitates forming the transition portion and protective structure on the plate body by means of openings, reduces the difficulty of manufacturing the transition portion and protective structure, and also helps to reduce the size occupied by the transition portion and protective structure along the first direction.

[0029] In one embodiment, the plate body, the protective structure and the transition portion are an integrated structure.

[0030] According to a second aspect of the present application, a battery is provided, comprising a sampling circuit board according to any of the aforementioned embodiments and a battery cell, wherein the battery cell is electrically connected to a corresponding adapter. The sampling circuit board is electrically connected to the battery cell via its adapter, and while the sampling circuit board can be used to collect information such as the voltage and / or temperature of the battery cell, it can also reduce the risk of the adapter breaking or falling off the board when the battery cell expands, thereby improving the sampling reliability of the sampling circuit board.

[0031] In one embodiment, the battery further includes a bus and a wiring harness board, wherein the bus corresponds to the battery cell and is electrically connected to the corresponding battery cell. The bus and the sampling circuit board are both arranged on the wiring harness board, and the battery cell is electrically connected to the corresponding adapter through the corresponding bus. In this way, on the one hand, the sampling circuit board can be used to collect information such as the voltage and / or temperature of the battery cell, while also reducing the risk of the adapter breaking or falling off the board when the battery cell expands, thereby improving the sampling reliability of the sampling circuit board. On the other hand, the bus and the sampling circuit board are both arranged on the wiring harness board to facilitate the electrical connection between the bus and the corresponding adapter.

[0032] According to a third aspect of the present application, there is provided an electrical device comprising a battery according to any one of the above embodiments.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. Furthermore, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 A structural schematic diagram of a vehicle according to an embodiment of the present application is shown.

[0036] Figure 2 A schematic diagram of the partial structure of a battery according to an embodiment of the present application is shown.

[0037] Figure 3 An exploded schematic diagram of a sampling circuit board, a bus bar, and a wiring harness board according to an embodiment of the present application is shown.

[0038] Figure 4 A schematic structural diagram of a sampling circuit board according to an embodiment of the present application is shown.

[0039] Figure 5 Shown Figure 4 An enlarged schematic diagram of point A.

[0040] Figure 6 A schematic structural diagram of a sampling circuit board and a bus bar according to an embodiment of the present application is shown.

[0041] Figure 7 Shown Figure 6 An enlarged schematic diagram of point B.

[0042] 1. Vehicle;

[0043] 10. Battery;

[0044] 100. Sampling circuit board;

[0045] 110, plate body; 111, first lifting portion; 112, second lifting portion; 113, first arc-shaped connecting portion;

[0046] 120, protective structure; 121, deformation portion; 122, connection portion; 1221, first connection section; 1222, second connection section;

[0047] 130. Transfer unit;

[0048] 140, adapter;

[0049] 150. Weakness;

[0050] 160, second arc-shaped connecting portion;

[0051] k, empty slot; k1, slot bottom wall; k2, convergent portion;

[0052] 200, busbar; 201, hole;

[0053] 300, wiring harness plate; 301, card block; 302, window.

[0054] 20. Motor;

[0055] 30. Controller. DETAILED DESCRIPTION

[0056] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0057] In the description of this application, it should be understood that if the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 this application.

[0058] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0059] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0062] During use, traditional sampling circuit boards are electrically connected to battery cells through adapters. However, battery cells expand during use, causing relative displacement between the adapters and the sampling circuit board, which in turn leads to a higher risk of the adapters breaking or falling off, and a higher risk of sampling failure of the traditional sampling circuit board.

[0063] In order to solve the problem of high risk of sampling failure in traditional sampling circuit boards, the present application designs a sampling circuit board, which includes a board body and a protective structure provided on the board body, and an adapter is provided on the corresponding protective structure. The protective structure can be used to absorb or transfer the displacement generated when the battery cell connected to the adapter expands, thereby reducing the risk of the adapter breaking or falling off the board body, and improving the sampling reliability of the sampling circuit board.

[0064] The sampling circuit board, battery and / or electrical device disclosed in the embodiments of the present application can be used, but is not limited to, in electrical devices such as vehicles, ships or aircraft. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship and a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy and an electric airplane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc. The power supply system of the electrical device can be composed of the electrode piece, the electrode assembly, the battery cell and / or the battery disclosed in the present application, so that it is convenient to provide electric drive for the electrical device and the service life of the electrical device can be increased.

[0065] Figure 1 A structural schematic diagram of a vehicle 1 according to an embodiment of the present application is shown. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is provided inside the vehicle 1. For example, a battery 10 may be provided at the bottom, front or rear of the vehicle 1. The battery 10 may be used to power the vehicle 1. For example, the battery 10 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, such as for the working power requirements during the start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 may not only be used as an operating power source for the vehicle 1, but may also be used as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 1.

[0066] A motor 20 and a controller 30 may also be provided inside the vehicle 1 . The controller 30 is used to control the battery 10 to supply power to the motor 20 , for example, to meet the power requirements for starting, navigating, and driving the vehicle 1 .

[0067] Figure 2 FIG. 1 shows a partial structural diagram of a battery 10 according to an embodiment of the present application. Figure 3 An exploded schematic diagram of a sampling circuit board 100 , a bus bar 200 and a wiring harness board 300 according to an embodiment of the present application is shown.

[0068] A battery 10 provided in one embodiment of the present application includes a sampling circuit board 100, a bus 200 and a wiring harness board 300. The sampling circuit board 100 and the bus 200 are both arranged on the wiring harness board 300, and the battery cells are electrically connected to the sampling circuit board 100 through the corresponding bus 200. In this way, information such as the voltage and / or temperature of the battery cells can be sampled through the sampling circuit board 100.

[0069] Figure 4 FIG. 1 shows a schematic structural diagram of a sampling circuit board 100 according to an embodiment of the present application. Figure 5 Shown Figure 4 An enlarged schematic diagram of point A.

[0070] See also Figure 4 and Figure 5 The sampling circuit board 100 in one embodiment of the present application includes a board body 110 , a connecting structure and an adapter 140 .

[0071] The plate 110 may be in a long strip shape and extend along the arrangement direction of the plurality of battery cells of the battery 10 .

[0072] The connecting structure includes a protective structure 120 and a transition portion 130 . The protective structure 120 has a head end 1201 connected to the plate body 110 and a tail end 1202 arranged relative to the head end 1201 . The protective structure 120 extends non-linearly between the head end 1201 and the tail end 1202 .

[0073] The protective structure 120 is a structure disposed on the plate 110 that absorbs or transfers the displacement generated by the expansion of the battery cells. For example, the protective structure 120 can be a deformable structure, such as an elastically deformable structure or an inelastically deformable structure.

[0074] The head end 1201 of the protective structure 120 refers to the starting end of the protective structure 120 , and the tail end 1202 of the protective structure 120 refers to the tail end of the protective structure 120 .

[0075] The protective structure 120 extends non-linearly between the head end 1201 and the tail end 1202. In other words, the protective structure 120 is non-linear. The protective structure 120 may extend in a curved manner between the head end 1201 and the tail end 1202, or may extend in a zigzag manner between the head end 1201 and the tail end 1202.

[0076] The adapter portion 130 is connected between the end 1202 of the corresponding protection structure 120 and the plate body 110 . The adapter 140 is disposed on the corresponding adapter portion 130 and is used to be electrically connected to the corresponding battery cell.

[0077] The sampling circuit board 100 can be electrically connected to the battery cell through its adapter 140 to collect information such as the voltage and / or temperature of the battery cell.

[0078] Since the protective structure 120 is extended in a non-linear shape between the head end 1201 and the tail end 1202, when the battery cell expands, the adapter 140 connected to the battery cell and provided on the corresponding adapter part 130 will transfer the displacement generated by the expansion of the battery cell to the corresponding adapter part 130, and then transfer it to the corresponding protective structure 120. The protective structure 120 extending in a non-linear shape can be used to absorb or transfer the displacement generated by the expansion of the battery cell, and even the protective structure 120 can be deformed in multiple directions or the protective structure 120 has a tendency to deform in a linear shape, so that the protective structure can better absorb or transfer the displacement generated by the expansion of the battery cell, thereby reducing the risk of the adapter 140 breaking or falling off the board body 110, and improving the sampling reliability of the sampling circuit board 100.

[0079] In some embodiments, the protective structure 120 extends in a curved manner between a head end 1201 and a tail end 1202 .

[0080] Since the protective structure 120 is bent and extended between the head end 1201 and the tail end 1202, stress concentration in the protective structure 120 can be reduced, thereby improving the strength and toughness of the protective structure 120, so as to better utilize the protective structure 120 to absorb or transfer the displacement generated by the expansion of the battery cell.

[0081] In some embodiments, the head end 1201 and the tail end 1202 of the protective structure 120 are along the longitudinal extension direction F of the plate body 110. 纵 Interval settings.

[0082] When the battery cell expands, the adapter 140 connected to the battery cell and disposed on the corresponding protective structure 120 will expand more in the longitudinal extension direction F of the plate 110. 纵 Therefore, the head end 1201 and the tail end 1202 of the protective structure 120 are displaced along the longitudinal extension direction F of the plate body 110. 纵 The spacing arrangement allows the protective structure 120 to better extend along the longitudinal extension direction F of the plate body 110 when the battery cell expands. 纵 The deformation can better absorb the displacement caused by the expansion of the battery cell, thereby better reducing the risk of the adapter 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0083] In other embodiments, the head end 1201 and the tail end 1202 of the protective structure 120 are spaced apart along the first direction F1, and the first direction F1 is parallel to the longitudinal extension direction F1 of the plate body 110. 纵 They intersect with each other and are parallel to the plane where the top surface of the plate 110 is located.

[0084] For example, the first direction F1 is parallel to the longitudinal extension direction F of the plate 110. 纵 They are perpendicular to each other, and the first direction F1 is parallel to the width direction of the plate 110 .

[0085] When the battery cell expands, the protective structure 120 can better deform along the first direction F1 and can also deform along the longitudinal extension direction F 纵 The deformation can effectively absorb the displacement caused by the expansion of the battery cell, thereby better reducing the risk of the adapter 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0086] In some other embodiments, the head end 1201 and the tail end 1202 of the protective structure 120 are along the longitudinal extension direction F of the plate body 110. 纵 The plurality of electrodes are arranged at intervals and are arranged at intervals along the first direction F1.

[0087] In this way, when the battery cell expands, the protective structure 120 can better extend along the first direction F1 and the longitudinal extension direction F of the plate body 110. 纵 The adapter 140 can be deformed in multiple directions, thereby better absorbing the displacement caused by the expansion of the battery cell, thereby better reducing the risk of the adapter 140 breaking or falling off the board 110, and thus improving the sampling reliability of the sampling circuit board 100.

[0088] In some embodiments, the protective structure 120 includes at least two deformation portions 121 arranged along a first direction F1, and a connecting portion 122 respectively connected to the two adjacent deformation portions 121. The first direction F1 intersects with the longitudinal extension direction of the plate body 110 and is parallel to the plane where the top surface of the plate body 110 is located.

[0089] The deformable portion 121 refers to a portion of the protective structure 120 that can be deformed. The deformable portion 121 can be bent or stretched.

[0090] The connecting portion 122 refers to a portion of the protective structure 120 used to connect two adjacent deformable portions 121 . Of course, the connecting portion 122 may also be deformed.

[0091] The protective structure 120 may include two deformation parts 121 , or may include three or more deformation parts 121 , which is not specifically limited herein.

[0092] Since at least two deformable portions 121 are arranged in the first direction F1 and two adjacent deformable portions 121 are connected by the connecting portion 122, when the battery cell expands, the adapter 140 connected to the battery cell and provided on the corresponding protective structure 120 will be more extended in the longitudinal extension direction F1 of the plate body 110. 纵The displacement can drive at least two deformation parts 121 to move along the longitudinal extension direction F of the plate body 110. 纵 Expanding or folding the adapter 140 can effectively absorb the displacement caused by the expansion of the battery cell, thereby better reducing the risk of the adapter 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0093] In some embodiments, the protective structure 120 includes at least three deformable portions 121 arranged along the first direction F1 , and two adjacent connecting portions 122 are located at opposite ends of the corresponding deformable portion 121 along the longitudinal extension direction of the plate body 110 .

[0094] The protective structure 120 may include three deformation parts 121 , or may include more than three deformation parts 121 , which is not specifically limited here.

[0095] Since the two adjacent connecting portions 122 are located at the corresponding deformation portion 121 along the longitudinal extension direction F of the plate body 110 纵 The opposite ends of the plate 110 make the protective structure 120 roughly S-shaped, so that the strength of the protective structure 120 can be improved, and the protective structure 120 can be more easily driven along the longitudinal extension direction F of the plate 110 when the battery cell expands. 纵 The protective structure 120 can be expanded or folded to improve the longitudinal extension direction F of the plate 110. 纵 The deformation amount is conducive to applying the sampling circuit board 100 to usage scenarios with large expansion displacement, better reducing the risk of the adapter 140 breaking or falling off the board body 110, and thus improving the sampling reliability of the sampling circuit board 100.

[0096] In some embodiments, the connecting portion 122 is bent and extended from one end of an adjacent deformable portion 121 to the same end of another adjacent deformable portion 121 along the longitudinal extension direction of the plate body 110 .

[0097] It can be understood that the connecting portion 122 is arranged to extend in a curved manner from one end to the other end, so that the two adjacent deformation portions 121 can transition in a curved shape, which can reduce the stress concentration in the protective structure 120, better improve the strength and toughness of the protective structure 120, and better utilize the protective structure 120 to absorb the displacement generated when the battery cell expands, thereby better reducing the risk of the adapter 140 breaking or falling off the board body 110, and thereby improving the sampling reliability of the sampling circuit board 100.

[0098] In some embodiments, the connecting portion 122 is bent and extended in an arc shape from one end of an adjacent deformable portion 121 to the same end of another adjacent deformable portion 121 along the longitudinal extension direction of the plate body 110 .

[0099] Specifically, the connecting portion 122 includes two first connecting segments 1221 respectively connected to two adjacent deformation portions 121, and a second connecting segment 1222 connected between the two first connecting segments 1221. Along the longitudinal extension direction of the plate body 110, the second connecting segment 1222 is recessed relative to the first connecting segment 1221 toward a side away from the adjacent deformation portion 121.

[0100] The first connecting segment 1221 refers to a segment of the connecting portion 122 used to connect adjacent deformable portions 121 , and the second connecting segment 1222 refers to a segment of the connecting portion 122 connected between two first connecting segments 1221 .

[0101] Since the second connecting segment 1222 is recessed relative to the first connecting segment 1221 toward a side away from the adjacent deformable portion 121 , the second connecting segment 1222 refers to an arcuate segment on the connecting portion 122 connected between the two first connecting segments 1221 .

[0102] It can be understood that the two adjacent deformation parts 121 are connected in an arc-shaped transition, which can improve the strength and toughness of the protective structure 120, and can better utilize the protective structure 120 to absorb the displacement generated when the battery cell expands, thereby better reducing the risk of the adapter 140 breaking or falling off the board body 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0103] In some embodiments, the protective structure 120 includes at least three deformable portions 121 arranged along the first direction F1 , and the bending directions of two adjacent connecting portions 122 are different.

[0104] by Figure 5 The embodiment shown in the figure is used as an example for explanation. The protective structure 120 includes three deformable parts 121 arranged along the first direction F1, and one connecting part 122 is arranged along the longitudinal extension direction F1 of the plate body 110. 纵 The other connecting portion 122 is bent to the left along the longitudinal extension direction F of the plate body 110. 纵 Bend to the right.

[0105] Since the bending directions of the two adjacent connecting portions 122 are different, the strength and toughness of the protective structure 120 can be improved, and the protective structure 120 can be more easily driven along the longitudinal extension direction F of the plate body 110 when the battery cell expands. 纵 The protective structure 120 can be expanded or folded to improve the longitudinal extension direction F of the plate 110. 纵 The deformation amount is conducive to applying the sampling circuit board 100 to usage scenarios with large expansion displacement, better reducing the risk of the adapter 140 breaking or falling off the board body 110, and thus improving the sampling reliability of the sampling circuit board 100.

[0106] In some embodiments, at least two deformation portions 121 are spaced apart along the first direction F1 .

[0107] On the one hand, the two adjacent deformable parts 121 can be better connected through the arc-shaped transition of the connecting part 122; on the other hand, a certain space can be provided for the deformation of the deformable part 121, which is conducive to better utilizing the protective structure 120 to absorb or transfer the displacement generated when the battery cell expands, thereby reducing the risk of the adapter 140 breaking or falling off the board body 110, and improving the sampling reliability of the sampling circuit board 100.

[0108] In some embodiments, the distance between two adjacent deformation portions 121 along the first direction F1 is 0.1 mm-0.6 mm. For example, the distance between two adjacent deformation portions 121 along the first direction F1 is D1, and D1 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm.

[0109] Setting the distance between two adjacent deformable portions 121 along the first direction F1 within a suitable range can not only enable the two adjacent deformable portions 121 to be better connected through the arc-shaped transition of the connecting portion 122; it can also provide a certain space for the deformable portions 121 to deform, which is conducive to better utilizing the protective structure 120 to absorb or transfer the displacement generated by the expansion of the battery cell, and can also reduce the size occupied by the protective structure 120 along the first direction F1.

[0110] In some embodiments, the deformation portion 121 is longitudinally extended along the longitudinal extension direction of the plate body 110 .

[0111] When the battery cell expands, the adapter 140 connected to the battery cell and disposed on the corresponding protective structure 120 will expand more in the longitudinal extension direction F of the plate 110. 纵 Therefore, the deformation portion 121 extending longitudinally along the longitudinal extension direction of the plate body 110 can better absorb the displacement generated when the battery cell expands, thereby better reducing the risk of the adapter 140 breaking or falling off the plate body 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0112] In some embodiments, the sampling circuit board 100 includes multiple connection structures and multiple adapters 140 corresponding to the multiple connection structures. Along the longitudinal extension direction of the board body 110, the protective structure 120 of the same connection structure is connected to the adapter 130. The adapter 140 is disposed on the corresponding adapter 130.

[0113] Since the adapter 140 is electrically connected to the corresponding battery cell and the adapter 140 corresponds one-to-one to the connection structure, the protective structure 120 of each connection structure can be used to absorb the displacement generated by the corresponding battery cell when it expands, thereby reducing the risk of the corresponding adapter 140 breaking or falling off the board 110, thereby better improving the sampling reliability of the sampling circuit board 100.

[0114] In some embodiments, the sampling circuit board 100 includes two groups of connection structure groups arranged at intervals along the first direction F1, and two groups of adapter assemblies corresponding one-to-one to the two groups of connection structure groups. The connection structure groups include a plurality of protective structures 120 arranged on the board body 110 at intervals along the longitudinal extension direction of the board body 110, and a plurality of adapter portions 130 corresponding one-to-one to one side of the plurality of protective structures 120 along the longitudinal extension direction of the board body 110. The adapter assembly includes a plurality of adapter parts 140. The adapter parts 130 of the connection structure groups are arranged one-to-one in correspondence with the adapter parts 140 of the corresponding adapter assemblies. The first direction F1 intersects with the longitudinal extension direction of the board body 110 and is parallel to the plane where the top surface of the board body 110 is located.

[0115] The multiple protective structures 120 of the connection structure group are arranged at intervals along the longitudinal extension of the board 110, and the multiple adapters 130 of the connection structure group are also arranged at intervals along the longitudinal extension of the board 110. This facilitates the arrangement of multiple battery cells along the longitudinal extension of the board 110. This allows the adapters 140 on the multiple adapters 130 to be electrically connected to the corresponding battery cells, facilitating the sampling circuit board 100 to collect voltage / current signals from the multiple battery cells while also optimizing the layout of the sampling circuit board 100 and the multiple battery cells. Furthermore, the adapters 130 are connected to the corresponding protective structures 120 along the longitudinal extension of the board 110. This allows the corresponding protective structures 120 to better absorb the displacement caused by the expansion of the battery cells connected to the adapters 140 on the corresponding adapters 130, thereby reducing the risk of the adapters 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0116] In some embodiments, the adapter 140 may protrude from the plate 110 along the first direction F1 , thereby facilitating electrical connection between the adapter 140 and the corresponding battery cell.

[0117] In some embodiments, the sampling circuit board 100 further includes a weak portion 150 disposed on the board body 110 and corresponding to the transition portion 130 . The weak portion 150 is connected between a side of the corresponding transition portion 130 away from the adjacent end 1202 and the board body 110 .

[0118] The weak portion 150 refers to a structure on the sampling circuit board 100 that can be broken or at least partially separated from the board body 110 under a predetermined external force.

[0119] In this manner, on the one hand, the protective structure 120 can be used to absorb or transfer the displacement caused by battery cell expansion, thereby reducing the risk of adapter 140 breaking or falling off the board 110 and improving the sampling reliability of the sampling circuit board 100. On the other hand, because the weak portion 150 is connected between the side of the corresponding adapter portion 130 away from the adjacent end 1202 and the board 110, the displacement caused by battery cell expansion can be transferred to the weak portion 150. Furthermore, the weak portion 150 can be used to absorb or transfer the displacement caused by battery cell expansion. For example, the displacement caused by battery cell expansion may cause cracks in the weak portion 150 or even cause it to fall off the board 110. However, the adapter 140 can still be well connected to the board 110 through the corresponding protective structure 120. This further reduces the risk of adapter 140 breaking or falling off the board 110 and improves the sampling reliability of the sampling circuit board 100.

[0120] In some embodiments, along the longitudinal extension direction of the plate body 110 , the weak portion 150 is connected between the plate body 110 and a side of the corresponding transition portion 130 away from the adjacent end 1202 .

[0121] When the battery cell expands, the adapter 140 connected to the battery cell and disposed on the corresponding protective structure 120 will expand more in the longitudinal extension direction F of the plate 110. 纵 Therefore, the weak portion 150 is connected to the side of the corresponding adapter 130 away from the adjacent end 1202 and the board body 110 along the longitudinal extension direction of the board body 110, which is conducive to better utilizing the weak portion 150 to absorb or transfer the displacement generated when the battery cell expands, thereby better reducing the risk of the adapter 140 breaking or falling off the board body 110, and improving the sampling reliability of the sampling circuit board 100.

[0122] In some embodiments, along the first direction F1 , the size of the weak portion 150 is 0.6 mm-1.2 mm. The first direction F1 intersects with the longitudinal extension direction of the plate 110 and is parallel to the plane where the top surface of the plate 110 is located.

[0123] The dimension of the weak portion 150 along the first direction F1 is the width of the weak portion 150 . For example, the width of the weak portion 150 is D2 , which may be 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, or 1.2 mm.

[0124] Setting the size of the weak portion 150 along the first direction F1 within a suitable range is beneficial for reducing the width of the weak portion 150 so that the weak portion 150 can break or detach from the plate 110 under a preset external force, making it easier to use the weak portion 150 to absorb or transfer the displacement caused by the expansion of the battery cell.

[0125] In some embodiments, along the first direction F1 , the size of the weak portion 150 is 0.8 mm-1.0 mm.

[0126] Illustratively, D2 may be 0.8 mm, 0.9 mm, or 1.0 mm.

[0127] In this way, the weak portion 150 can be easily broken or separated from the plate 110 under a predetermined external force, so that the weak portion 150 can be used to absorb or transfer the displacement generated when the battery cell expands.

[0128] In some embodiments, the plate body 110 includes a first lifting portion 111 corresponding to the weak portion 150 , and along the longitudinal extension direction of the plate body 110 , the weak portion 150 is connected between the corresponding first lifting portion 111 and the corresponding transition portion 130 .

[0129] The first lifting portion 111 can be used to form a certain lifting force on the adapter portion 130, thereby improving the horizontality of the adapter portion 130 relative to the horizontal plane, and reducing the possibility of the adapter 140 on the adapter portion 130 being misaligned during the process of connecting to the corresponding battery cell, thereby facilitating better connection of the adapter 140 on the adapter portion 130 to the corresponding battery cell.

[0130] In some embodiments, the plate body 110 further includes a second lifting portion 112 corresponding to the protective structure 120, with the head end 1201 and the tail end 1202 extending along the longitudinal direction F of the plate body 110. 纵 The second lifting portion 112 is connected to the head end 1201 of the corresponding protective structure 120 , the end 1202 of the protective structure 120 is connected to one end of the corresponding adapter portion 130 , and the other end of the adapter portion 130 is connected to the corresponding first lifting portion 111 through the corresponding weak portion 150 .

[0131] In this embodiment, the head end and the tail end are along the longitudinal extension direction F of the plate body 110. 纵 They are arranged at intervals and arranged at intervals along the first direction F1.

[0132] The first lifting portion 111 and the second lifting portion 112 can be used to lift the adapter portion 130 along the longitudinal extension direction F of the plate body 110. 纵On opposite sides of the adapter 130, the levelness of the adapter 130 relative to the horizontal plane is improved, which can reduce the possibility of the adapter 140 on the adapter 130 being misaligned during the process of connecting to the corresponding battery cell, thereby facilitating a better connection between the adapter 140 on the adapter 130 and the corresponding battery cell.

[0133] In some embodiments, the plate body 110 further includes a first arc-shaped connecting portion 113 corresponding to the second lifting portion 112 and the protective structure 120 respectively, and the first arc-shaped connecting portion 113 is connected between the corresponding second lifting portion 112 and the head end 1201 of the corresponding protective structure 120.

[0134] In this way, the first arc-shaped connecting portion 113 can be used to form an arc-shaped transition connection between the second lifting portion 112 and the corresponding protective structure 120, which can reduce the possibility of stress concentration between the second lifting portion 112 and the corresponding protective structure 120, thereby improving the overall strength and toughness of the sampling circuit board 100, and thereby improving the sampling reliability of the sampling circuit board 100.

[0135] In some embodiments, the sampling circuit board 100 further includes a second arc-shaped connecting portion 160 corresponding to the transition portion 130 and the protective structure 120 , respectively. The second arc-shaped connecting portion 160 is connected between the corresponding transition portion 130 and the end 1202 of the corresponding protective structure 120 .

[0136] In this way, the second arc-shaped connecting portion 160 can be used to form an arc-shaped transition connection between the corresponding adapter portion 130 and the corresponding protective structure 120, thereby reducing the possibility of stress concentration between the corresponding adapter portion 130 and the corresponding protective structure 120, thereby improving the overall strength and toughness of the sampling circuit board 100, and thereby improving the sampling reliability of the sampling circuit board 100.

[0137] In other embodiments, the board body 110 further includes a first arcuate connecting portion 113 corresponding to the second lifting portion 112 and the protective structure 120, respectively. The first arcuate connecting portion 113 is connected between the corresponding second lifting portion 112 and the head end 1201 of the corresponding protective structure 120. The sampling circuit board 100 further includes a second arcuate connecting portion 160 corresponding to the adapter portion 130 and the protective structure 120, respectively. The second arcuate connecting portion 160 is connected between the corresponding adapter portion 130 and the tail end 1202 of the corresponding protective structure 120.

[0138] In this way, the possibility of stress concentration between the second lifting portion 112 and the corresponding protective structure 120 can be reduced, and the possibility of stress concentration between the corresponding adapter portion 130 and the corresponding protective structure 120 can be reduced, thereby improving the overall strength and toughness of the sampling circuit board 100, and thereby improving the sampling reliability of the sampling circuit board 100.

[0139] In some embodiments, two empty grooves k are defined between the first lifting portion 111, the corresponding weak portion 150 and the corresponding transition portion 130. The two empty grooves k are arranged with two side walls as groove bottom walls k1 opposite to each other along the first direction F1 with the corresponding weak portion 150. The first direction F1 intersects with the longitudinal extension direction of the plate body 110 and is parallel to the plane where the top surface of the plate body 110 is located.

[0140] Since the two empty slots k are provided with two side walls as the slot bottom walls k1 opposite to each other along the first direction F1 with the corresponding weak portions 150, the weak portion 150 is located between the two empty slots k, making it easier for the weak portion 150 to break or detach from the plate body 110 under a preset external force, thereby facilitating the use of the weak portion 150 to absorb or transfer the displacement generated by the expansion of the battery cell.

[0141] In some embodiments, the groove bottom walls k1 of the two empty grooves k are recessed toward the sides close to each other along the first direction F1.

[0142] It can be understood that the size of the weak portion 150 at the bottom wall k1 of the empty groove k along the first direction F1 is smaller, which is conducive to the weak portion 150 breaking or detaching from the plate body 110 under a preset external force, and facilitates the use of the weak portion 150 to absorb or transfer the displacement generated by the expansion of the battery cell.

[0143] In some embodiments, the sidewall of the slot k includes a convergent portion k2 , and along the first direction F1 toward the side close to another slot k, the convergent portion k2 gradually decreases in size along the radial direction of the slot opening of the slot k.

[0144] This is equivalent to using the convergent portion k2 to form a pointed end on the wall of the slot k, which is beneficial for the weak portion 150 to break or separate from the plate 110 more easily under a preset external force, and facilitates the use of the weak portion 150 to absorb or transfer the displacement generated by the expansion of the battery cell.

[0145] In some embodiments, the weak portion 150 is configured to be at least partially detached from the plate body 110 under a predetermined external force.

[0146] In this way, the weak portion 150 can be effectively utilized to absorb or transfer the displacement generated by the expansion of the battery cell, thereby reducing the risk of the adapter 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0147] In some embodiments, the side wall of the adapter portion 130 on the same side of the first direction F1 is flush with the side wall of the corresponding protective structure 120 on the same side of the first direction F1, and the first direction F1 intersects with the longitudinal extension direction of the plate body 110 and is parallel to the plane where the top surface of the plate body 110 is located.

[0148] It is convenient to form the adapter portion 130 and the protective structure 120 on the plate body 110 by opening holes, which reduces the processing difficulty of the adapter portion 130 and the protective structure 120 and is also beneficial to reduce the occupied size of the adapter portion 130 and the protective structure 120 along the first direction F1.

[0149] In some embodiments, the plate body 110 , the protective structure 120 , and the transition portion 130 are an integrated structure.

[0150] In this way, the board body 110 , the protective structure 120 and the transition portion 130 can be formed in an integrated manner, which can improve the manufacturing efficiency of the sampling circuit board 100 .

[0151] In some embodiments, the plate body 110 , the protective structure 120 , the transition portion 130 , and the weak portion 150 are an integrated structure.

[0152] In this way, the board body 110, the protective structure 120, the transition portion 130 and the weak portion 150 can be formed in an integrally formed manner, for example, by using a corresponding mold to integrally form the board body 110, the protective structure 120, the transition portion 130 and the weak portion 150, thereby improving the production efficiency of the sampling circuit board 100.

[0153] In some embodiments, the adapter 140 is welded to the corresponding adapter portion 130 .

[0154] In this way, the overall structural strength of the sampling circuit board 100 can be improved, and the integrity of the adapter 140 and the corresponding adapter portion 130 can be improved, making it easier for the sampling circuit board 100 to be electrically connected to the battery cell through its adapter 140 .

[0155] In some embodiments, the plate body 110 , the protective structure 120 , the transition portion 130 , the weak portion 150 , and the second arc-shaped connecting portion 160 are an integrated structure.

[0156] In this way, the board body 110 , the protective structure 120 , the transition portion 130 , the weak portion 150 and the second arc-shaped connecting portion 160 can be formed in an integrated manner, thereby improving the manufacturing efficiency of the sampling circuit board 100 .

[0157] In some embodiments, the sampling circuit board 100 includes a board body 110 , a protective structure 120 , an adapter 140 , and a weak portion 150 .

[0158] On the one hand, the protective structure 120 extending in a non-linear shape can be used to absorb or transfer the displacement generated by the expansion of the battery cell. On the other hand, the weak portion 150 can be used to absorb or transfer the displacement generated by the expansion of the battery cell, thereby reducing the risk of the adapter 140 breaking or falling off the board 110, thereby improving the sampling reliability of the sampling circuit board 100.

[0159] An embodiment of the present application provides a battery 10 , including the sampling circuit board 100 of any of the above embodiments and a battery cell, wherein the battery cell is electrically connected to a corresponding adapter 140 .

[0160] The sampling circuit board 100 is electrically connected to the battery cell through its adapter 140. The sampling circuit board 100 can be used to collect information such as the voltage and / or temperature of the battery cell. At the same time, when the battery cell expands, the risk of the adapter 140 breaking or falling off the board 110 is reduced, thereby improving the sampling reliability of the sampling circuit board 100.

[0161] In some embodiments, see Figure 2 , and refer to Figure 6 and Figure 7 The battery 10 also includes a busbar 200 and a wiring harness board 300. The busbar 200 corresponds to the battery cell and is electrically connected to the corresponding battery cell. The busbar 200 and the sampling circuit board 100 are both provided on the wiring harness board 300, and the battery cell is electrically connected to the corresponding adapter 140 via the corresponding busbar 200.

[0162] This allows the sampling circuit board 100 to collect information such as the voltage and / or temperature of the battery cells while also reducing the risk of the adapter 140 breaking or falling off the board 110 when the battery cells expand, thereby improving the sampling reliability of the sampling circuit board 100. Furthermore, the busbar 200 and the sampling circuit board 100 are both located on the wiring harness board 300, facilitating electrical connection between the busbar 200 and the corresponding adapter 140.

[0163] In some embodiments, the busbar 200 is snap-connected to the wiring harness plate 300 .

[0164] Specifically, one of the busbar 200 and the wiring harness plate 300 is provided with a card block 301, and the other of the busbar 200 and the wiring harness plate 300 is provided with a card hole 201 adapted to the card block 301. For example, Figure 3 As shown, a clamping block 301 is provided on the wiring harness plate 300 , and a clamping hole 201 is provided on the busbar 200 . The clamping block 301 can be clamped into the corresponding clamping hole 201 , thereby clamping the busbar 200 into the wiring harness plate 300 .

[0165] Before the bus 200 is electrically connected to the corresponding adapter 140, the bus 200 can be fixed to the wiring harness plate 300 by a snap-fit ​​method, which can effectively prevent the bus 200 from shifting before being welded to the corresponding adapter 140, thereby improving the welding accuracy between the bus 200 and the corresponding adapter 140.

[0166] In some embodiments, the plate body 110 is snapped or bonded to the wiring harness plate 300 .

[0167] Before the bus 200 is electrically connected to the corresponding adapter 140, the board body 110 can be fixed to the wiring harness board 300 by clamping or bonding. This can effectively prevent the sampling circuit board 100 from shifting before welding to the corresponding bus 200, thereby improving the welding accuracy between the bus 200 and the corresponding adapter 140.

[0168] In some embodiments, the material of the wiring harness plate 300 is an insulating material, for example, the material of the wiring harness plate 300 is plastic.

[0169] In some embodiments, a window 302 for the busbar 200 to pass through is provided on the wiring harness plate 300 along the thickness direction of the wiring harness plate 300 , so that the portion of the busbar 200 passing through the window 302 is connected to the pole of the corresponding battery cell.

[0170] In some embodiments, the sampling circuit board 100 is disposed in the middle area of ​​the wiring harness board 300 along the first direction F1. The adapter 140 can protrude from the board body 110 along the first direction F1. The plurality of bus bars 200 are located on opposite sides of the sampling circuit board 100 along the first direction F1.

[0171] The first direction F1 may be parallel to the width direction of the wiring harness plate 300 . That is, the sampling circuit board 100 is disposed in the middle area of ​​the wiring harness plate 300 along the width direction of the wiring harness plate 300 .

[0172] In this way, the adapter 140 of the sampling circuit board 100 is conveniently electrically connected to the corresponding battery cells, thereby facilitating the sampling circuit board 100 to collect information such as voltage and / or temperature of multiple battery cells.

[0173] An embodiment of the present application provides an electrical device, including the battery 10 described above.

[0174] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0175] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A sampling circuit board for connecting battery cells, characterized in that: The sampling circuit board comprises: Plate(110); A connecting structure, comprising a protective structure (120) and a transition portion (130), wherein the protective structure (120) has a head end (1201) connected to the plate body (110) and a tail end (1202) arranged relative to the head end (1201); the protective structure (120) is arranged to extend in a non-linear shape between the head end (1201) and the tail end (1202); the transition portion (130) is connected between the tail end (1202) of the corresponding protective structure (120) and the plate body (110); and The adapter (140) is provided on the corresponding adapter portion (130) and is used for electrically connecting to the corresponding battery cell.

2. The sampling circuit board according to claim 1, characterized in that: The protective structure (120) is arranged to extend in a curved manner between the head end (1201) and the tail end (1202).

3. The sampling circuit board according to claim 1, characterized in that: The head end (1201) and the tail end (1202) are spaced apart along the longitudinal extension direction of the plate body (110); and / or The head end (1201) and the tail end (1202) are spaced apart along a first direction; the first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

4. The sampling circuit board according to any one of claims 1 to 3, characterized in that: The protective structure (120) comprises at least two deformable portions (121) arranged along a first direction, and a connecting portion (122) respectively connected to two adjacent deformable portions (121); The first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

5. The sampling circuit board according to claim 4, characterized in that: The protective structure (120) comprises at least three deformation portions (121) arranged along the first direction; Two adjacent connecting portions (122) are located at opposite ends of the corresponding deformation portion (121) along the longitudinal extension direction of the plate body (110).

6. The sampling circuit board according to claim 4, characterized in that: The connecting portion (122) is bent and extended from one end of an adjacent deformable portion (121) to the same end of another adjacent deformable portion (121) along the longitudinal extension direction of the plate body (110).

7. The sampling circuit board according to claim 6, characterized in that: The protective structure (120) comprises at least three deformation portions (121) arranged along the first direction; The bending directions of the two adjacent connecting portions (122) are different.

8. The sampling circuit board according to claim 4, characterized in that: At least two of the deformation portions (121) are arranged at intervals along the first direction.

9. The sampling circuit board according to claim 4, characterized in that: The deformation portion (121) is longitudinally extended along the longitudinal extension direction of the plate body (110).

10. The sampling circuit board according to any one of claims 1 to 3, characterized in that: The sampling circuit board includes a plurality of the connection structures and a plurality of adapters (140) corresponding one-to-one to the plurality of the connection structures; Along the longitudinal extension direction of the plate body (110), the protective structure (120) of the same connecting structure is connected to the transition portion (130); The adapter (140) is arranged on the corresponding adapter portion (130) of the connection structure.

11. The sampling circuit board according to claim 10, characterized in that: The sampling circuit board includes two groups of connection structure groups arranged at intervals along a first direction, and two groups of adapter components corresponding to the two groups of connection structure groups one by one; The connecting structure group comprises a plurality of protective structures (120) arranged on the plate body (110) at intervals along the longitudinal extension direction of the plate body (110), and a plurality of adapters (130) arranged on one side of the plurality of protective structures (120) in a one-to-one correspondence along the longitudinal extension direction of the plate body (110); The adapter assembly comprises a plurality of adapter parts (140), and the adapter parts (130) of the connection structure group are arranged in a one-to-one correspondence with the adapter parts (140) of the corresponding adapter assembly; The first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

12. The sampling circuit board according to any one of claims 1 to 3, characterized in that: The sampling circuit board further includes a weak portion (150) corresponding to the transition portion (130), and the weak portion (150) is connected between a side of the corresponding transition portion (130) away from the adjacent end (1202) and the board body (110).

13. The sampling circuit board according to claim 12, characterized in that: Along the longitudinal extension direction of the plate body (110), the weak portion (150) is connected between the side of the corresponding transition portion (130) away from the adjacent end (1202) and the plate body (110).

14. The sampling circuit board according to claim 13, characterized in that: Along the first direction, the size of the weak portion (150) is 0.6 mm to 1.2 mm; The first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

15. The sampling circuit board according to claim 14, characterized in that: Along the first direction, the size of the weak portion (150) is 0.8 mm to 1.0 mm.

16. The sampling circuit board according to claim 13, characterized in that: The plate body (110) includes a first lifting portion (111) corresponding to the weak portion (150), and along the longitudinal extension direction of the plate body (110), the weak portion (150) is connected between the corresponding first lifting portion (111) and the corresponding transition portion (130).

17. The sampling circuit board according to claim 16, characterized in that: The plate body (110) further includes a second lifting portion (112) corresponding to the protective structure (120); The head end (1201) and the tail end (1202) are spaced apart along the longitudinal extension direction of the plate body (110); The second lifting portion (112) is connected to the head end (1201) of the corresponding protective structure (120), the end (1202) of the protective structure (120) is connected to one end of the corresponding transition portion (130), and the other end of the transition portion (130) is connected to the corresponding first lifting portion (111) through the corresponding weak portion (150).

18. The sampling circuit board according to claim 16, characterized in that: Two empty slots (k) are defined between the first lifting portion (111), the corresponding weak portion (150) and the corresponding transition portion (130), and the two empty slots (k) have two side walls arranged opposite to each other along the first direction with the corresponding weak portion (150) as slot bottom walls (k1); The first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

19. The sampling circuit board according to claim 18, characterized in that: The groove bottom walls (k1) of the two empty grooves (k) are recessed toward the sides close to each other along the first direction.

20. The sampling circuit board according to claim 18, wherein: The groove side wall of the empty groove (k) includes a convergent portion (k2), and along the first direction toward the side close to the other empty groove (k), the convergent portion (k2) gradually decreases in size along the radial direction of the groove opening of the empty groove (k).

21. The sampling circuit board according to claim 12, wherein: The plate body (110), the protective structure (120), the transition portion (130) and the weak portion (150) are an integrated structure.

22. The sampling circuit board according to claim 12, characterized in that: The weak portion (150) is configured to be at least partially detached from the plate body (110) under a preset external force.

23. The sampling circuit board according to any one of claims 1 to 3, characterized in that: The side wall of the transition portion (130) on the same side in the first direction is flush with the side wall of the corresponding protective structure (120) on the same side in the first direction; The first direction intersects with the longitudinal extension direction of the plate body (110) and is parallel to the plane where the top surface of the plate body (110) is located.

24. The sampling circuit board according to any one of claims 1 to 3, characterized in that: The plate body (110), the protective structure (120) and the transition portion (130) are an integrated structure.

25. A battery, characterized in that: include: The sampling circuit board according to any one of claims 1 to 24; and A battery cell, wherein the battery cell is electrically connected to the corresponding adapter (140).

26. The battery according to claim 25, characterized in that The battery further comprises: a busbar (200), corresponding to the battery cells and electrically connected to the corresponding battery cells; and A wiring harness plate (300), the busbar (200) and the sampling circuit board are both arranged on the wiring harness plate (300), and the battery cells are electrically connected to the corresponding adapter (140) through the corresponding busbar (200).

27. An electrical device, characterized in that: Comprising a battery as claimed in claim 25 or 26.

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