Battery sampler, battery pack and vehicle

Abstract

The embodiment of the utility model provides a battery sampler, a battery pack and a vehicle, and the battery sampler comprises a circuit board which is provided with two opposite side surfaces; the sampling component is arranged on one side surface of the circuit board; the connector and the sampling component are located on the same side face of the circuit board, the decoupling direction of the connector faces the direction of the opening, and the sampling component deviates from the decoupling path of the connector. After the battery sampler and the battery module are hoisted, the communication connection mode of the battery sampler is a convenient up-and-down connection mode and is not blocked, so that the direct connection of the wire harness and the connector can be realized, an adapter wire harness does not need to be additionally arranged, the influence of a narrow space is avoided, and the reliability of sampling communication is favorably improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery sampler, a battery pack and a vehicle. Background Art

[0002] The battery pack is an important part of the power battery system. The battery pack usually includes multiple battery modules, and each battery module includes multiple battery cells. In order to understand the real-time working status of the battery cells, the battery pack is also equipped with multiple battery samplers. The battery samplers are electrically connected to the battery cells to collect information such as the voltage, current, and temperature of the battery cells in the battery module.

[0003] During the battery pack assembly process, it is usually necessary to add an additional adapter harness to complete the electrical connection between the battery sampler and the battery module after hoisting, so as to realize the sampling communication of the battery pack. However, adding an adapter harness will increase the overall length of the harness and the number of transfers, which will reduce the reliability of sampling communication. Utility Model Content

[0004] The present application aims to provide a battery sampler, a battery pack and a vehicle to solve the problem that an adapter harness needs to be added during the existing battery pack assembly process, which increases the overall length of the harness and the number of adapters, resulting in reduced sampling communication reliability.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a battery sampler, which is applied to a battery pack, wherein the battery pack comprises a box body with an opening and a plurality of battery modules arranged in the box body, wherein the battery module comprises a plurality of battery cells, and the battery sampler is installed in a gap between a side wall of the box body and the battery module, and the battery sampler is used to be electrically connected to the battery cell, and the battery sampler comprises:

[0007] A circuit board having two opposite sides;

[0008] A sampling component, wherein the sampling component is arranged on one side surface of the circuit board;

[0009] and a connector, wherein the connector and the sampling component are located on the same side of the circuit board, the decoupling direction of the connector is toward the direction of the opening, and the sampling component deviates from the decoupling path of the connector.

[0010] Optionally, an extension portion extending toward the opening is provided on a side of the circuit board close to the opening, and the connector is provided at an end of the extension portion close to the opening.

[0011] Optionally, the battery pack further includes a cover plate that covers the opening;

[0012] There is a first gap between one side of the battery cell close to the cover plate and the cover plate;

[0013] There is a second gap between one side of the extension portion close to the cover plate and the cover plate, and the second gap is greater than or equal to the first gap.

[0014] Optionally, the length direction of the circuit board is the first direction;

[0015] There are two extension portions, and the two extension portions are arranged at intervals along the first direction;

[0016] There are two connectors, and one connector is arranged on one extension portion.

[0017] Optionally, the sampling component and the connector are arranged on the side of the circuit board facing away from the battery cell.

[0018] Optionally, the width direction of the circuit board is the second direction, the circuit board includes a first side and a second side arranged opposite to each other along the second direction, and the first side is close to the opening;

[0019] The battery sampler further includes two groups of conductive connection members, and the two groups of conductive connection members are respectively arranged on the first side and the second side, and the conductive connection members are used for electrically connecting with the battery cells.

[0020] Optionally, the length direction of the circuit board is the first direction, the first direction is perpendicular to the second direction, and a plurality of battery cells are arranged in sequence along the first direction;

[0021] The conductive connection member includes a plurality of first electrical connection pieces, the plurality of first electrical connection pieces are arranged at intervals along the first direction, and one first electrical connection piece is electrically connected to at least one battery cell.

[0022] Optionally, the first electrical connection piece is a nickel sheet.

[0023] In a second aspect, the present application also discloses a battery pack, and the battery pack includes: a box body, a plurality of battery modules, a wire harness, and the above-mentioned battery sampler;

[0024] The box body has an opening;

[0025] The battery module is arranged in the box body, and one battery module includes a plurality of battery cells;

[0026] The battery sampler is arranged in the gap between the side wall of the box body and the battery module, and the battery sampler is electrically connected to the battery cells;

[0027] The wire harness includes two ends disposed away from each other, and the two ends of the wire harness are respectively connected to the connectors of two adjacent battery samplers.

[0028] Optionally, the connector includes an insertion interface, and the insertion interface faces the opening;

[0029] The end of the wire harness is provided with an insertion terminal, and the insertion terminal is inserted into the insertion interface.

[0030] Optionally, the length direction of the circuit board is the first direction, and a plurality of the battery modules are arranged at intervals along the first direction;

[0031] The battery pack further includes a plurality of wire harness fixing brackets. One wire harness fixing bracket is disposed between two adjacent battery modules and is opposite to the position of the wire harness. The wire harness fixing bracket is connected to the bottom wall of the box body, and the wire harness fixing bracket is used to fix at least part of the wire harness.

[0032] Optionally, a wire groove is provided on one side of the wire harness fixing bracket close to the opening;

[0033] The wire harness includes a cable, and at least part of the cable is embedded in the wire groove.

[0034] In a third aspect, the present application also discloses a vehicle, and the vehicle includes the battery pack according to any one of the above.

[0035] In the embodiment of the present application, on the one hand, since the battery sampler is installed in the gap between the side wall of the box body and the battery module, the decoupling direction of the connector of the battery sampler faces the opening direction, that is, the installation direction of the circuit board is different from the decoupling direction of the connector and the decoupling direction of the connector faces the opening. In this way, after the battery sampler and the battery module are hoisted, the communication connection method of the battery sampler is a convenient up-and-down connection method, and the wire harness can be directly connected to the connector at the opening of the box body to achieve sampling communication, without adding a conversion wire harness, and is not affected by the narrow space, which is beneficial to improving the reliability of sampling communication. On the other hand, since the sampling component deviates from the decoupling path of the connector, that is, the connector will not be blocked during the connection or disconnection process, thereby improving the connection convenience of the connector and facilitating automatic assembly.

[0036] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0037] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0038] Figure 1 is a schematic structural diagram of a battery sampler provided by an embodiment of the present application;

[0039] Figure 2 is one of the schematic structural diagrams of a battery pack provided by an embodiment of the present application;

[0040] Figure 3 is another schematic structural diagram of a battery pack provided by an embodiment of the present application;

[0041] Figure 4 is Figure 3 a partial enlarged view of position A in

[0042] Figure 5 is a schematic structural diagram of a battery cell provided by an embodiment of the present application;

[0043] Figure 6 is a schematic structural diagram of a wire harness fixing bracket provided by an embodiment of the present application.

[0044] Reference numerals: 1. box body, 2. battery module, 21. battery cell, 211. pole column, 212. housing, 22. second electrical connection piece, 3. battery sampler, 31. circuit board, 311. extension part, 32. first electrical connection piece, 33. connector, 4. wire harness, 41. plug-in terminal, 42. cable, 5. wire harness fixing bracket, 51. wire groove, 52. avoidance groove, 521. buckle, X. first direction, Y. second direction, Z. third direction. Detailed Embodiments

[0045] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0046] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0047] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0048] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0049] Referring to Figure 1 , a schematic structural diagram of a battery sampler provided by an embodiment of the present application is shown. Referring to Figures 2 to 3 , a schematic structural diagram of a battery pack provided by an embodiment of the present application is shown. Referring to Figure 4 , shows Figure 3 a partial enlarged view of position A in Figure 5 , a schematic structural diagram of a battery cell provided by an embodiment of the present application is shown. Referring to Figure 6 , a schematic structural diagram of a wire harness fixing bracket provided by an embodiment of the present application is shown.

[0050] Currently, as Figures 2 to 3 shown, during the battery pack assembly process, usually multiple battery samplers 3 are respectively connected to multiple battery modules 2 and then hoisted into the box body 1, and after the hoisting is completed, a wire harness 4 is used to complete the electrical connection between the battery samplers 3, so as to realize the sampling communication of the battery pack. Specifically, as Figure 1As shown in the figure, the battery sampler 3 includes a connector 33. The connectors 33 of two adjacent battery samplers 3 are connected by a wire harness 4 to achieve electrical connection between the battery samplers 3. In the application scenario where the module is installed upright, since the battery sampler 3 is usually located between the battery module 2 and the side wall of the box body 1 after hoisting, the space is narrow and blocked by the box body 1 and / or other sampling components, making it inconvenient to connect the wire harness 4 to the connector 33. Therefore, a jumper wire harness needs to be additionally provided at the connector 33 of the battery sampler 3 before hoisting, and the jumper wire harnesses of two adjacent battery samplers 3 are connected by the wire harness 4 to achieve sampling communication.

[0051] As Figures 1 to 3 shown, the present application provides a battery sampler 3, which is applied to a battery pack. The battery pack includes a box body 1 with an opening and a plurality of battery modules 2 arranged in the box body 1. The battery module 2 includes a plurality of battery cells 21. The battery sampler 3 is installed in the gap between the side wall of the box body 1 and the battery module 2. The battery sampler 3 is used for electrically connecting with the battery cells 21. The battery sampler 3 includes: a circuit board 31, the circuit board 31 having two opposite sides; sampling components, the sampling components being arranged on one of the sides of the circuit board 31; and a connector 33, the connector 33 and the sampling components being located on the same side of the circuit board 31, the decoupling direction of the connector 33 facing the direction of the opening, and the sampling components deviating from the decoupling path of the connector 33.

[0052] In the embodiment of the present application, on the one hand, since the battery sampler 3 is installed in the gap between the side wall of the box body 1 and the battery module 2, the decoupling direction of the connector 33 of the battery sampler 3 faces the direction of the opening, that is, the installation direction of the circuit board 31 is different from the decoupling direction of the connector 33 and the decoupling direction of the connector 33 faces the opening. In this way, after the battery sampler 3 and the battery module 2 are hoisted, the communication connection method of the battery sampler 3 is a convenient up-and-down connection method. The wire harness 4 can be directly connected to the connector 33 at the opening of the box body 1 to achieve sampling communication, without the need to add a jumper wire harness, and is not affected by the narrow space, which is beneficial to improving the reliability of sampling communication. On the other hand, since the sampling components deviate from the decoupling path of the connector 33, that is, the connector 33 will not be blocked during the connection or disconnection process, thereby improving the connection convenience of the connector 33 and facilitating automatic assembly.

[0053] It should be noted that the circuit board 31 in the embodiments of the present application may adopt a printed circuit board, which has a relatively large stiffness and can reliably support the sampling components and the connector 33. In addition, the sampling components in the embodiments of the present application refer to the components related to sampling, including but not limited to hardware structures such as collectors, processors, balancing resistors, transformers, and capacitors, which can be selectively integrated on the circuit board 31 by those skilled in the art according to actual needs. Among them, the collector can be a voltage collector, a temperature collector, or other collection chips, etc., which is not limited herein, and those skilled in the art can adjust according to actual needs. It can be understood that when the collector is integrated on the circuit board 31, the structural stability of the collector can be enhanced. In addition, in the embodiments of the present application, the first direction X is the length direction of the battery pack, that is, the length direction of the circuit board 31; the second direction Y is the height direction of the battery pack, that is, the width direction of the circuit board 31; the third direction Z is the width direction of the battery pack, that is, the thickness direction of the circuit board 31, where the first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0054] In some alternative embodiments of the present application, an extension portion 311 extending in the opening direction is provided on the side of the circuit board 31 close to the opening of the box body 1, and the connector 33 is disposed at one end of the extension portion 311 close to the opening. In this way, the connector 33 can be made as close as possible to the opening of the box body 1, thereby further improving the connection convenience and reliability of the connector 33.

[0055] In some alternative embodiments of the present application, the battery pack further includes a cover plate (not shown in the drawings), the cover plate covers the opening; there is a first gap between the side of the battery cell 21 close to the cover plate and the cover plate; there is a second gap between the side of the extension portion 311 close to the cover plate and the cover plate, and the second gap is greater than or equal to the first gap.

[0056] In the embodiments of the present application, since there is a first gap between the side of the battery cell 21 close to the cover plate and the cover plate, and there is a second gap between the side of the extension portion 311 close to the cover plate and the cover plate, and the second gap is greater than or equal to the first gap. That is, the extension portion 311 is always within the projection range of the battery cell 21 in the third direction Z and will not protrude from the battery cell 21. In this way, during the assembly process of the cover plate and the box body 1, the extension portion 311 will not interfere with the cover plate, effectively avoiding damage to the extension portion 311 and being beneficial to improving the service life of the battery sampler 3.

[0057] In practical applications, two connectors 33 are provided on each circuit board 31 to realize the input and output of sampling information. Such as Figure 3As shown in the figure, the middle battery sampler 3 is connected to the two adjacent battery samplers 3 on its left and right through a wire harness 4. Specifically, each battery sampler 3 includes a first connector 33 and a second connector 33 arranged in sequence from left to right along the first direction X. The first connector 33 of the middle battery sampler 3 is connected to the second connector 33 of the battery sampler 3 on the left through the wire harness 4, and the second connector 33 of the middle battery sampler 3 is connected to the first connector 33 of the battery sampler 3 on the right through the wire harness 4. In addition, the two battery samplers 3 at both ends usually form a sampling loop by connecting to the main control board of the vehicle power distribution box through the wire harness 4. Among them, the main control board is used to collect, process, and transmit the sampling information.

[0058] In some alternative embodiments of the present application, as Figure 1 shown, the length direction of the circuit board 31 is the first direction X; there are two extension parts 311, and the two extension parts 311 are arranged at intervals along the first direction X; there are two connectors 33, and one connector 33 is arranged on one extension part 311.

[0059] In the embodiments of the present application, since two extension parts 311 are provided and the two extension parts 311 are arranged at intervals along the first direction X, by arranging one connector 33 on one extension part 311, the overall length of the wire harness 4 can be reduced, thereby reducing the risk of abnormal sampling communication and being beneficial to improving the reliability of sampling communication.

[0060] It should be noted that the embodiments of the present application do not limit the distance between the two extension parts 311, and those skilled in the art can adjust it according to actual needs. It can be understood that as the distance between the two extension parts 311 increases, that is, when the two extension parts 311 are arranged as close as possible to both ends of the circuit board 31 along the first direction X, the length of the wire harness 4 connecting two adjacent circuit boards 31 will also decrease accordingly, but other components in the battery pack, such as the explosion-proof valve of the battery cell 21, etc., need to be avoided. In addition, the embodiments of the present application do not limit the shape of the extension part 311. In one embodiment, as Figure 1 shown, the extension part 311 is generally rectangular.

[0061] In some alternative embodiments of the present application, the sampling components and the connector 33 are arranged on the side of the circuit board 31 facing away from the battery cell 21. In this way, during the assembly process of the battery sampler 3 and the battery module 2, interference between the sampling components, the connector 33 and the battery cell 21 can be effectively avoided.

[0062] It should be noted that the circuit board 31 and the extension portion 311 can be integrally formed or separately formed. It can be understood that when the circuit board 31 and the extension portion 311 are integrally formed, the overall structural strength can be improved and the processing cost of the battery sampler 3 can be reduced. In addition, a circuit is provided on the circuit board 31, and the connector 33 is electrically connected to the circuit, so as to realize the transmission of sampling information.

[0063] In some alternative embodiments of the present application, the width direction of the circuit board 31 is the second direction Y. The circuit board 31 includes a first side and a second side that are oppositely arranged along the second direction Y, and the first side is close to the opening; the battery sampler 3 further includes two sets of conductive connectors, and the two sets of conductive connectors are respectively arranged on the first side and the second side, and the conductive connectors are used for electrically connecting with the battery cell 21.

[0064] In the embodiments of the present application, since two sets of conductive connectors are provided, and the two sets of conductive connectors are respectively arranged on the first side and the second side of the circuit board 31 that are oppositely arranged along the second direction Y. In this way, through the electrical connection between the conductive connectors and the battery cell 21, information such as the voltage, current, and temperature of the battery cell 21 can be collected, so as to understand the real-time working state of the battery cell 21, which is beneficial to improving the use safety of the battery pack.

[0065] It should be noted that the conductive connectors in the embodiments of the present application are arranged on the circuit board 31 and electrically connected to the circuit board 31, so as to realize the transmission of sampling information.

[0066] In some alternative embodiments of the present application, the length direction of the circuit board 31 is the first direction X, the first direction X is perpendicular to the second direction Y, and multiple battery cells 21 are arranged in sequence along the first direction X; the conductive connectors include multiple first electrical connection pieces 32, the multiple first electrical connection pieces 32 are arranged at intervals along the first direction X, and one first electrical connection piece 32 is electrically connected to at least one battery cell 21.

[0067] In the embodiments of the present application, since each conductive connector includes multiple first electrical connection pieces 32 that are arranged at intervals along the first direction X, through the electrical connection between the first electrical connection pieces 32 and the battery cells 21, information such as the voltage, current, and temperature of the multiple battery cells 21 can be collected simultaneously, which is beneficial to comprehensively understanding the real-time working state of each battery cell 21 and further improving the use safety of the battery pack.

[0068] It should be noted that the first electrical connection piece 32 is a sheet-like structure with electrical conductivity, which can reduce the thickness of the battery sampler 3 along the third direction Z, facilitating the miniaturized design of the battery pack. In addition, in order to reliably connect the first electrical connection piece 32 to the battery cell 21, at least a part of the end of the first electrical connection piece 32 facing away from the circuit board 31 is usually bent towards the direction close to the battery cell 21, so as to connect the first electrical connection piece 32 to the battery cell 21. The first electrical connection piece 32 is usually electrically connected to the battery cell 21 by welding, such as laser welding. In one embodiment, the first electrical connection piece 32 is a nickel sheet, which has the advantages of low cost, mature welding process and not easy to rust, facilitating the reduction of the manufacturing cost and difficulty of the battery pack and improving the service life of the battery pack.

[0069] In specific applications, as Figure 5 shown, the battery cell 21 includes a housing 212 and a terminal 211. During the voltage acquisition process, the battery sampler 3 needs to simultaneously acquire the potentials at both ends of each battery cell 21, that is, the potentials at both ends of the battery cell 21 along the third direction Z to achieve voltage acquisition. Based on this, generally, the first electrical connection piece 32 of the conductive connection member close to the opening side of the box body 1 is electrically connected to the terminal 211 of the battery cell 21 to acquire the potential at one end of the battery cell 21. The first electrical connection piece 32 close to the bottom wall side of the box body 1 is electrically connected to the housing 212 of the battery cell 21, and the housing 212 has been connected in series with the potential at the other end of the battery cell 21 facing away from the terminal 211 to achieve equipotential, so that the potential at the other end of the battery cell 21 can be acquired, and then the voltage of the battery cell 21 can be acquired. In addition, as Figure 4 shown, the battery module 2 further includes a second electrical connection piece 22, and the second electrical connection piece 22 is used to connect the terminals 211 of two adjacent battery cells 21. In this case, the first electrical connection piece 32 of the conductive connection member close to the opening side of the box body 1 can be directly connected to the second electrical connection piece 22 to acquire the potential at one end of the battery cell 21.

[0070] In summary, the battery sampler provided by the embodiment of the present application has at least the following advantages:

[0071] In an embodiment of the present application, on the one hand, since the battery sampler is installed in the gap between the side wall of the box body and the battery module, the decoupling direction of the connector of the battery sampler faces the opening direction, that is, the installation direction of the circuit board is different from the decoupling direction of the connector and the decoupling direction of the connector faces the opening. In this way, after the battery sampler and the battery module are hoisted, the communication connection method of the battery sampler is a convenient up-and-down connection method, and the wire harness can be directly connected to the connector at the opening of the box body to achieve sampling communication, without adding additional wire harnesses, and is not affected by the narrow space, which is beneficial to improving the reliability of sampling communication. On the other hand, since the sampling components deviate from the decoupling path of the connector, that is, the connector will not be blocked during the connection or disconnection process, thereby improving the connection convenience of the connector and facilitating the realization of automatic assembly.

[0072] The present application also provides a battery pack, including: a box body 1, a plurality of battery modules 2, a wire harness 4, and the battery sampler 3 according to any one of the above embodiments; the box body 1 has an opening; the battery modules 2 are arranged in the box body 1, and one battery module 2 includes a plurality of battery cells 21; the battery sampler 3 is arranged in the gap between the side wall of the box body 1 and the battery module 2, and the battery sampler 3 is electrically connected to the battery cells 21; the wire harness 4 includes two ends arranged away from each other, and the two ends of the wire harness 4 are respectively connected to the connectors 33 of two adjacent battery samplers 3.

[0073] In an embodiment of the present application, due to the provision of the battery sampler 3, the communication connection method of the battery sampler 3 is a convenient up-and-down connection method and the connection process is not blocked. In this way, on the one hand, the wire harness 4 can be directly connected to the connector 33 at the opening of the box body 1 to achieve sampling communication, without adding additional wire harnesses, and is not affected by the narrow space, which is beneficial to improving the reliability of sampling communication and reducing the production cost of the battery pack. On the other hand, the connection or disconnection of the wire harness 4 and the connector 33 is not blocked, which is beneficial to improving the connection convenience of the connector 33, facilitating the realization of automatic assembly, and improving the production efficiency of the battery pack.

[0074] It should be noted that in the embodiments of the present application, the structure of the battery sampler is the same as that of the battery sampler described in any of the above embodiments, and its beneficial effects are also similar, which will not be elaborated here. In addition, in the embodiments of the present application, the assembly relationship between the plurality of battery samplers 3 and the plurality of battery modules 2 includes the following three situations: (1) one battery sampler 3 corresponds to one battery module 2; (2) one battery sampler 3 corresponds to at least two battery modules 2; (3) at least two battery samplers 3 correspond to one battery module 2. The embodiments of the present application do not limit the specific corresponding situation between the battery sampler 3 and the battery module 2, and those skilled in the art can adjust it according to actual needs.

[0075] In an embodiment of the present application, as Figures 2 to 3As shown in the figure, a battery module 2 includes a plurality of battery cells 21 arranged in sequence along the first direction X. A battery pack includes a plurality of battery modules 2 arranged at intervals along the first direction X. Among them, the battery cells 21 are square battery cells 21, specifically blade batteries, and the electrode posts 211 of the blade batteries face the side wall of the box body 1. In the embodiments of the present application, the number of battery modules 2 in a battery pack and the specific number of battery cells 21 in a battery module 2 are not limited, and those skilled in the art can adjust according to actual needs.

[0076] In some alternative embodiments of the present application, the connector 33 includes a socket, and the socket faces the opening; a plug terminal 41 is provided at the end of the wire harness 4, and the plug terminal 41 is inserted into the socket.

[0077] In the embodiments of the present application, since the socket of the connector 33 faces the opening, in this way, during the normal installation process of the battery module 2, by inserting the plug terminal 41 of the wire harness 4 along the second direction Y, that is, the height direction of the battery pack from top to bottom into the socket, a reliable connection between the connector 33 and the wire harness 4 can be achieved, which is beneficial to improving the connection convenience between the connector 33 and the wire harness 4.

[0078] It should be noted that the socket of the connector 33 can also face other directions, that is, the socket of the connector 33 and the plug terminal 41 of the wire harness 4 can also be inserted along other directions, which is not limited here, and those skilled in the art can adjust according to actual needs. In one of the embodiments, the socket of the connector 33 faces the side wall, and the socket of the connector 33 and the plug terminal 41 of the wire harness 4 are inserted from left to right or from right to left along the first direction X, that is, the length direction of the battery pack.

[0079] In some alternative embodiments of the present application, the length direction of the circuit board 31 is the first direction X, and a plurality of battery modules 2 are arranged at intervals along the first direction X; the battery pack further includes a plurality of wire harness fixing brackets 5, and one wire harness fixing bracket 5 is arranged between adjacent two battery modules 2 and is opposite to the position of the wire harness 4, and the wire harness fixing bracket 5 is connected to the bottom wall of the box body, and the wire harness fixing bracket 5 is used to fix at least part of the wire harness 4. In this way, by fixing the wire harness 4 with the wire harness fixing bracket 5, not only can the running direction of the wire harness 4 be restricted to avoid interference between the wire harness 4 and other components in the battery pack; but also the wire harness 4 can be prevented from being damaged during assembly and use, which is beneficial to improving the reliability of sampling communication. Among them, the bottom wall of the box body and the cover plate are arranged oppositely.

[0080] Specifically, as Figure 6 shown, a wire groove 51 is provided on the side of the wire harness fixing bracket 5 close to the opening; the wire harness 4 includes a cable 42, and at least part of the cable 42 is embedded in the wire groove 51. In this way, by providing the wire groove 51 on the side close to the opening and embedding the cable 42 of the wire harness 4 in the wire groove 51, the wire harness 4 can be fixed.

[0081] It should be noted that, in order to avoid interference between the wire harness fixing bracket 5 and the cover plate, generally, there is a third gap between the side of the wire harness fixing bracket 5 close to the cover plate and the cover plate, and the third gap is greater than or equal to the first gap.

[0082] In practical applications, in order to improve the structural strength of the box body 1, multiple cross beams are usually provided on the bottom wall of the box body 1, and the battery modules 2 are arranged to avoid the cross beams, that is, two adjacent battery modules 2 are usually located on both sides of a cross beam. Based on this, a notch is provided at the corresponding position of the cross beam for the wire harness fixing bracket 5, and a connecting portion with a certain height is reserved below the notch for connecting with the wire harness fixing bracket 5. A relief groove 52 extending in the third direction Z is provided on the side of the wire harness fixing bracket 5 close to the connecting portion, and the relief groove 52 is adapted to the connecting portion. One of a clamping groove or a buckle 521 is provided on the groove wall of the relief groove 52, and the other of the clamping groove or the buckle 521 is provided at the corresponding position of the connecting portion. When the wire harness fixing bracket 5 is installed on the cross beam of the bottom wall, the connecting portion is embedded in the relief groove 52, and the clamping groove is engaged with the buckle 521, so as to realize the reliable connection between the wire harness fixing bracket 5 and the bottom wall.

[0083] The following provides an example of the assembly process of the battery pack according to the embodiment of the present application:

[0084] 1. Connect the battery sampler 3 with the battery module 2 correspondingly;

[0085] 2. Place the box body 1 with its opening facing upwards;

[0086] 3. Lift and install the battery module 2 into the box body 1;

[0087] 4. Install the wire harness fixing bracket 5;

[0088] 5. Plug the wire harness 4 directly into the connectors 33 of two adjacent battery samplers 3;

[0089] 6. Install the cover plate at the opening of the box body 1, and thus complete the assembly of the battery pack.

[0090] The embodiment of the present application also provides a vehicle, and the vehicle includes the battery pack according to any one of the above embodiments.

[0091] It should be noted that in the embodiment of the present application, the structure of the battery pack is the same as that of the battery pack in any one of the above embodiments, and its beneficial effects are also similar, so details are not described herein.

[0092] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0093] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery sampler, applied to a battery pack, the battery pack comprising a box with an opening and a plurality of battery modules arranged in the box, the battery module comprising a plurality of battery cells, the battery sampler being installed in a gap between a side wall of the box and the battery module, the battery sampler being used to be electrically connected to the battery cells, characterized in that: The battery sampler comprises: A circuit board having two opposite sides; A sampling component, wherein the sampling component is arranged on one side surface of the circuit board; and a connector, wherein the connector and the sampling component are located on the same side of the circuit board, the decoupling direction of the connector is toward the direction of the opening, and the sampling component deviates from the decoupling path of the connector.

2. The battery sampler according to claim 1, characterized in that: An extension portion extending toward the opening is disposed on one side of the circuit board close to the opening, and the connector is disposed at one end of the extension portion close to the opening.

3. The battery sampler according to claim 2, characterized in that: The battery pack further includes a cover plate, and the cover plate covers the opening; A first gap is formed between a side of the battery cell close to the cover plate and the cover plate; A second gap is formed between the cover plate and a side of the extension portion close to the cover plate, and the second gap is greater than or equal to the first gap.

4. The battery sampler according to claim 2, characterized in that: The length direction of the circuit board is a first direction; There are two extending portions, and the two extending portions are spaced apart along the first direction; Two connectors are provided, and one connector is provided on one of the extension parts.

5. The battery sampler according to claim 1, characterized in that: The sampling component and the connector are arranged on a side of the circuit board that is away from the battery cell.

6. The battery sampler according to claim 1, characterized in that: The width direction of the circuit board is a second direction, the circuit board comprises a first side and a second side arranged opposite to each other along the second direction, and the first side is close to the opening; The battery sampler further includes two groups of conductive connectors, which are respectively arranged on the first side and the second side, and are used to be electrically connected to the battery cell.

7. The battery sampler according to claim 6, characterized in that: The length direction of the circuit board is a first direction, the first direction is perpendicular to the second direction, and the plurality of cells are arranged in sequence along the first direction; The conductive connecting member includes a plurality of first electrical connecting pieces, the plurality of first electrical connecting pieces are arranged at intervals along the first direction, and one of the first electrical connecting pieces is electrically connected to at least one of the battery cells.

8. The battery sampler according to claim 7, characterized in that: The first electrical connecting sheet is a nickel sheet.

9. A battery pack, characterized in that: The battery pack comprises: a box, a plurality of battery modules, a wiring harness and a battery sampler according to any one of claims 1 to 8; The box body has an opening; The battery module is arranged in the box, and one battery module includes a plurality of battery cells; The battery sampler is arranged in the gap between the side wall of the box and the battery module, and the battery sampler is electrically connected to the battery cell; The wiring harness comprises two ends which are arranged away from each other, and the two ends of the wiring harness are respectively connected to the connectors of two adjacent battery samplers.

10. The battery pack according to claim 9, characterized in that: The connector comprises an insertion port, and the insertion port faces the opening; A plug-in terminal is provided at the end of the wiring harness, and the plug-in terminal is plugged into the plug port.

11. The battery pack according to claim 9, characterized in that: The length direction of the circuit board is a first direction, and the plurality of battery modules are arranged at intervals along the first direction; The battery pack also includes a plurality of wire harness fixing brackets, one of which is disposed between two adjacent battery modules and opposite to the position of the wire harness, and the wire harness fixing bracket is connected to the bottom wall of the box body, and is used to fix at least a portion of the wire harness.

12. The battery pack according to claim 11, characterized in that: A wire groove is provided on one side of the wire harness fixing bracket close to the opening; The wiring harness includes a cable, at least a portion of which is embedded in the wire trough.

13. A vehicle, characterized in that: The vehicle comprises the battery pack according to any one of claims 9 to 12.

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