Battery cell fixing assembly, battery module and electric vehicle

Abstract

The embodiment of the utility model provides a battery cell fixing assembly, a battery module and an electric vehicle, and relates to the technical field of batteries. The battery cell fixing assembly comprises a first battery cell fixing bracket and a second battery cell fixing bracket, wherein the first battery cell fixing bracket is provided with a first battery cell clamping groove; a second battery cell clamping groove is formed in the second battery cell fixing bracket; the first battery cell clamping groove is used for clamping one end of at least one layer of battery cell, and the second battery cell clamping groove is used for clamping the other end of the at least one layer of battery cell, so that the first battery cell fixing bracket and the second battery cell fixing bracket are jointly used for clamping the at least one layer of battery cell. A positive electrode outlet groove and a negative electrode outlet groove are formed in one side, far away from the first battery cell clamping groove, of the first battery cell fixing bracket; or one side, far away from the first battery cell clamping groove, of the first battery cell fixing bracket is provided with a positive electrode outlet groove, and one side, far away from the second battery cell clamping groove, of the second battery cell fixing bracket is provided with a negative electrode outlet groove. The structure of the battery module is reduced, the installation process is simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery core fixing component, a battery module and an electric vehicle. Background Art

[0002] New energy vehicles are receiving more and more attention from the society, especially electric vehicles, and power battery modules are an important component of electric vehicles.

[0003] However, current battery modules have many parts, complex structures, high costs, and are also complex and time-consuming to install. Utility Model Content

[0004] The utility model provides a battery core fixing component, a battery module and an electric vehicle, which can simplify the installation structure of the battery module and reduce the cost.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the utility model provides a battery core fixing assembly, which includes:

[0007] A first battery cell fixing bracket, wherein the first battery cell fixing bracket is provided with a first battery cell holding groove;

[0008] A second battery cell fixing bracket, wherein the second battery cell fixing bracket is provided with a second battery cell holding groove; the first battery cell holding groove is used to clamp one end of at least one layer of battery cells, and the second battery cell holding groove is used to clamp the other end of the at least one layer of battery cells, so that the first battery cell fixing bracket and the second battery cell fixing bracket are used together to clamp the at least one layer of battery cells;

[0009] A positive electrode outlet groove and a negative electrode outlet groove are formed on a side of the first battery cell fixing bracket away from the first battery cell holding groove; or, a positive electrode outlet groove is formed on a side of the first battery cell fixing bracket away from the first battery cell holding groove, and a negative electrode outlet groove is formed on a side of the second battery cell fixing bracket away from the second battery cell holding groove; the positive electrode outlet groove is used to install a positive current collecting plate, and the negative electrode outlet groove is used to install a negative current collecting plate.

[0010] In an optional embodiment, a first slot is formed on the side wall of the positive electrode outlet slot, and the first slot is used to install a first current collecting plate gasket; a second slot is formed on the side wall of the negative electrode outlet slot, and the second slot is used to install a second current collecting plate gasket.

[0011] In an optional embodiment, the bottom wall of the positive electrode outlet slot is provided with a first protrusion, and the first protrusion is used to support the first current collecting plate gasket; the bottom wall of the negative electrode outlet slot is provided with a second protrusion, and the second protrusion is used to support the second current collecting plate gasket.

[0012] In an optional embodiment, the battery cell fixing assembly also includes a positive electrode outlet cover plate and a negative electrode outlet cover plate, the positive electrode outlet cover plate is detachably connected to the first battery cell fixing bracket, and the positive electrode outlet cover plate is used to cover the positive electrode outlet groove; the negative electrode outlet cover plate is detachably connected to the first battery cell fixing bracket or the second battery cell fixing bracket, and the negative electrode outlet cover plate is used to cover the negative electrode outlet groove.

[0013] In an optional embodiment, the positive electrode outlet cover plate is snap-connected to the first battery cell fixing bracket, and / or the negative electrode outlet cover plate is snap-connected to the first battery cell fixing bracket or the second battery cell fixing bracket.

[0014] In an optional embodiment, the number of the first battery cell holding grooves and the number of the second battery cell holding grooves are both multiple, the first battery cell holding grooves correspond to the second battery cell holding grooves one by one, and each of the first battery cell holding grooves and the corresponding second battery cell holding grooves are used together to clamp a layer of the battery cells.

[0015] In an optional embodiment, the battery cell fixing assembly further includes a keel, one end of the keel is connected to the first battery cell fixing bracket, the other end of the keel is connected to the second battery cell fixing bracket, and the keel is used to space the two adjacent layers of the battery cells.

[0016] In an optional embodiment, the battery cell fixing assembly further includes a first clamping plate and a second clamping plate, the first clamping plate is used to connect to the top of the battery cell, the second clamping plate is used to connect to the bottom of the battery cell, and the first clamping plate and the second clamping plate are used together to clamp all the battery cells;

[0017] The first clamping plate and the second clamping plate are both provided with a plurality of explosion-proof valve avoidance holes.

[0018] An embodiment of the utility model further provides a battery module, comprising a battery cell fixing assembly, a positive current collecting plate, a negative current collecting plate and a plurality of battery cells in any of the above embodiments, wherein the plurality of battery cells are arranged in an array to form at least one layer of battery cells side by side; one end of the at least one layer of battery cells is connected to the first battery cell clamping groove, and the other end of the at least one layer of battery cells is connected to the second battery cell clamping groove, so that the first battery cell fixing bracket and the second battery cell fixing bracket are used together to clamp the at least one layer of battery cells;

[0019] The positive current collecting plate is connected to the anode of one of the battery cells, and part of the positive current collecting plate is installed in the positive electrode outlet slot; the negative current collecting plate is connected to the cathode of one of the battery cells, and part of the negative current collecting plate is installed in the negative electrode outlet slot.

[0020] An embodiment of the utility model further provides an electric vehicle, comprising a vehicle body and the battery module in the above embodiment, wherein the battery module is arranged in the vehicle body.

[0021] The beneficial effects of a battery cell fixing assembly, a battery module and an electric vehicle according to the embodiment of the utility model include:

[0022] The battery cell fixing assembly includes a first battery cell fixing bracket and a second battery cell fixing bracket, wherein the first battery cell fixing bracket is provided with a first battery cell clamping groove; the second battery cell fixing bracket is provided with a second battery cell clamping groove; the first battery cell clamping groove is used to clamp one end of at least one layer of battery cells, and the second battery cell clamping groove is used to clamp the other end of at least one layer of battery cells, so that the first battery cell fixing bracket and the second battery cell fixing bracket are used together to clamp at least one layer of battery cells. By providing the first battery cell fixing bracket and the second battery cell fixing bracket, the structural design of the end plates on both sides of the battery module and the upper and lower cover plates can be eliminated, and all battery cells can be clamped and fixed only by the first battery cell fixing bracket and the second battery cell fixing bracket to form a battery module. The installation structure of the battery module is reduced, the installation process is simplified, and the production cost is reduced. A positive electrode outlet slot and a negative electrode outlet slot are provided on the side of the first battery cell fixing bracket away from the first battery cell holding slot; or, a positive electrode outlet slot is provided on the side of the first battery cell fixing bracket away from the first battery cell holding slot, and a negative electrode outlet slot is provided on the side of the second battery cell fixing bracket away from the second battery cell holding slot; the positive electrode outlet slot is used to install a positive electrode collector plate, and the negative electrode outlet slot is used to install a negative electrode collector plate. By providing the positive electrode outlet slot and the negative electrode outlet slot, it is also convenient to lead out the positive and negative electrodes after the collector plate is connected to all the battery cells, which is convenient for the electrical connection of the battery module, thereby simplifying the structure of the battery module and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a first battery module provided in an embodiment of the present utility model;

[0025] Figure 2 An exploded schematic diagram of a first battery module provided in an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of a second battery module provided in an embodiment of the present utility model;

[0027] Figure 4A schematic diagram of a first battery cell fixing bracket provided in an embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of a second battery cell fixing bracket provided in an embodiment of the utility model.

[0029] Icons: 1000-battery module; 100-battery cell fixing assembly; 110-first battery cell fixing bracket; 111-first battery cell holding groove; 112-positive electrode outlet groove; 1121-first slot; 1122-first protrusion; 113-mounting hole; 120-second battery cell fixing bracket; 121-second battery cell holding groove; 122-negative electrode outlet groove; 1221-second slot; 1222-second protrusion; 130-positive electrode outlet cover; 140-negative electrode outlet cover; 150-keel; 160-first splint; 161-explosion-proof valve avoidance hole; 170-second splint; 200-positive electrode current collector; 300-negative electrode current collector; 400-battery cell; 500-current collector gasket; 510-first current collector gasket; 520-second current collector gasket. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model 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. Therefore, it cannot be understood as a limitation on the present utility model.

[0034] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] As the current social energy crisis becomes increasingly serious, new energy vehicles are receiving more and more attention from the society, especially electric vehicles, and power battery modules are an important part of electric vehicles. However, the current battery modules have many parts, complex structures, high costs, and complex installation, which takes a long time.

[0037] Based on this, please refer to Figure 1 , Figure 2 and Figure 3 The battery cell fixing assembly 100 provided in the embodiment of the utility model can effectively improve the above-mentioned technical problems. The battery cell fixing assembly 100 can simplify the installation structure of the battery module 1000 and reduce the cost. The battery cell fixing assembly 100 is applied to the battery module 1000, and the battery module 1000 having the battery cell fixing assembly 100 also has the same function. The battery module 1000 can be applied to electric vehicles and other equipment, and the electric vehicles and other equipment having the battery module 1000 also have the above-mentioned functions.

[0038] The electric vehicle includes a vehicle body and a battery module 1000 . The battery module 1000 is disposed in the vehicle body. The battery module 1000 provides electric energy for the vehicle body to realize various functions of the vehicle body.

[0039] The structure of the battery module 1000 is described in detail below.

[0040] Figure 1 A schematic diagram of a first battery module 1000 provided in an embodiment of the present utility model; Figure 2 This is an exploded schematic diagram of a first battery module 1000 provided in an embodiment of the present utility model;

[0041] Figure 3 Schematic diagram of a second battery module 1000 provided in an embodiment of the present utility model, as shown Figure 1 , Figure 2 and Figure 3 As shown, the battery module 1000 includes a cell fixing assembly 100, a positive current collector plate 200, a negative current collector plate 300 and a plurality of cells 400, wherein the plurality of cells 400 are arranged in an array to form at least one layer of cells 400 in parallel; one end of at least one layer of cells 400 is connected to the first cell clamping groove 111, and the other end of at least one layer of cells 400 is connected to the second cell clamping groove 121, so that the first cell fixing bracket 110 and the second cell fixing bracket 120 are used together to clamp at least one layer of cells 400. The positive current collector plate 200 is connected to the anode of one cell 400, and part of the positive current collector plate 200 is installed in the positive outlet groove 112; the negative current collector plate 300 is connected to the cathode of the cell 400, and part of the negative current collector plate 300 is installed in the negative outlet groove 122.

[0042] Specifically, any two adjacent cells 400 are connected in series or in parallel through a current collector plate, and then all the current collector plates are connected through an FPC board (flexible circuit board), one end of the negative current collector plate 300 is connected to the FPC board, and the other end of the negative current collector plate 300 is located in the negative electrode outlet slot 122, which is used to connect to the negative electrode of an external power supply. One end of the positive current collector plate 200 is connected to the anode of a certain cell 400, and the other end of the positive current collector plate 200 is located in the positive electrode outlet slot 112, which is used to connect to the positive electrode of an external power supply to form a loop. In addition, in addition to using an FPC board to connect all the current collector plates, a wiring harness collection connection can also be used.

[0043] The battery module 1000 of this embodiment may also include a wiring harness plug-in, which is installed on the first battery cell fixing bracket 110 and connected to the positive electrode current collecting plate 200. By adding a wiring harness plug-in, the wiring harness can be easily connected and disconnected without welding or cutting the wiring harness, which can save time and labor costs and improve work efficiency. And the contact points provided by the wiring harness plug-in usually have good electrical connection performance. They can ensure the transmission of current and accurate transmission of signals, reduce resistance and signal interference, maintain the stability of the connection, and effectively prevent contact loosening and jitter.

[0044] In order to reduce the number of mounting structural components of the battery module 1000, reduce costs, and simplify the installation process, the battery cell fixing assembly 100 in this embodiment includes a first battery cell fixing bracket 110 and a second fixing bracket. The first battery cell fixing bracket 110 is provided with a first battery cell holding groove 111; the second battery cell fixing bracket 120 is provided with a second battery cell holding groove 121; the first battery cell holding groove 111 is used to clamp one end of at least one layer of battery cells 400, and the second battery cell holding groove 121 is used to clamp the other end of at least one layer of battery cells 400, so that the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 are used together to clamp at least one layer of battery cells 400. A positive electrode outlet groove 112 and a negative electrode outlet groove 122 are provided on a side of the first battery cell fixing bracket 110 away from the first battery cell holding groove 111; or, a positive electrode outlet groove 112 is provided on a side of the first battery cell fixing bracket 110 away from the first battery cell holding groove 111, and a negative electrode outlet groove 122 is provided on a side of the second battery cell fixing bracket 120 away from the second battery cell holding groove 121; the positive electrode outlet groove 112 is used to install the positive current collecting plate 200, and the negative electrode outlet groove 122 is used to install the negative current collecting plate 300.

[0045] That is, when the positive current collector plate 200 and the negative current collector plate 300 are located at the two ends of the same layer of battery cells 400, a positive electrode outlet slot 112 and a negative electrode outlet slot 122 are provided on the first battery cell fixing bracket 110. When the positive current collector plate 200 and the negative current collector plate 300 are located at the two ends of the same layer of battery cells 400, a positive electrode outlet slot 112 is provided on the first battery cell fixing bracket 110, and a negative electrode outlet slot 122 is provided on the second battery cell fixing bracket 120. The position setting of the positive electrode outlet slot 112 and the negative electrode outlet slot 122 can be determined according to the way of electrical connection (wiring harness collection or PFC collection) between the multiple battery cells 400, and is not limited here. Multiple battery cells 400 are bonded side by side along the first direction to form a layer of battery cells 400, and multiple layers of battery cells 400 are arranged side by side along the second direction to form multiple layers of battery cells 400, and the first direction is perpendicular to the second direction. One end of a layer of battery cells 400 refers to one end along the arrangement direction of the multiple battery cells 400 in each layer of battery cells 400 , that is, one end along the first direction.

[0046] By providing the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120, the structural design of the end plates on both sides and the upper and lower cover plates of the battery module 1000 can be eliminated, and all the battery cells 400 can be clamped and fixed only by the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 to form the battery module 1000. The installation structure of the battery module 1000 is reduced, the installation process is simplified, and the production cost is reduced. By providing the positive electrode outlet groove 112 and the negative electrode outlet groove 122, it is also convenient to lead out the positive and negative electrodes after the current collector is connected to all the battery cells 400, which is convenient for the electrical connection of the battery module 1000, thereby simplifying the structure of the battery module 1000 and reducing the production cost.

[0047] In order to limit the spacing between two adjacent layers of battery cells 400, please refer to Figure 2 The battery cell fixing assembly 100 in this embodiment further includes a keel 150, one end of which is connected to the first battery cell fixing bracket 110, and the other end of which is connected to the second battery cell fixing bracket 120. The keel 150 is used to space two adjacent layers of battery cells 400. The keel 150 in this embodiment is serpentine-shaped. Of course, the keel 150 can also be in other shapes. For example, when installing square battery cells, the keel 150 can be in a straight plate shape.

[0048] To ensure installation, in order to protect the battery 400, please continue to refer to Figure 2 , and combined with Figure 1 and Figure 3 The battery cell fixing assembly 100 in this embodiment also includes a first clamping plate 160 and a second clamping plate 170. The first clamping plate 160 is used to connect with the top of the battery cell 400, and the second clamping plate 170 is used to connect with the bottom of the battery cell 400. The first clamping plate 160 and the second clamping plate 170 are used together to insulate and protect all the battery cells 400. By setting the first clamping plate 160 and the second clamping plate 170, the battery cell 400 can be protected to prevent the battery cell 400 from directly contacting the external environment, thereby effectively preventing the battery module 1000 from short circuits and other problems. The first clamping plate 160 and the second clamping plate 170 in this embodiment are made of insulating materials such as plastic, have good insulation properties, and can prevent the battery cell 400 from short circuiting with the external circuit. In addition, the first clamping plate 160 and the second clamping plate 170 also play a role of fixing and sealing. The top of the battery cell 400 refers to the end of the battery cell 400 with the pole ear, and the bottom of the battery cell 400 refers to the end of the battery cell 400 away from the pole ear. The first clamping plate 160 and the second clamping plate 170 are connected to the battery cell 400 by bonding. Of course, other connection methods may also be used, which are not limited here.

[0049] In order to ensure the safety performance of the battery module 1000, the first clamping plate 160 and the second clamping plate 170 in this embodiment are both provided with a plurality of explosion-proof valve avoidance holes 161, so that when the battery module 1000 is in abnormal conditions, such as overcharge, over discharge, short circuit, etc., the normal operation of the explosion-proof valve of the battery cell 400 is not affected, so that the battery current can be cut off in time to avoid accidents such as fire and explosion of the battery, and ensure personal and property safety. It can also reduce the pressure burden of the battery, avoid damage caused by excessive pressure on the battery, and thus extend the service life of the battery.

[0050] In order to make the positive electrode current collecting plate 200 and the negative electrode current collecting plate 300 more firmly connected at the positive electrode outlet groove 112 and the negative electrode outlet groove 122, respectively, please refer to Figure 4 and Figure 5 , and combined with Figure 2 , Figure 4It is a schematic diagram of a first battery cell fixing bracket 110 provided in an embodiment of the utility model; Figure 5 Schematic diagram of the second battery cell fixing bracket 120 provided in the embodiment of the utility model. In this embodiment, the side wall of the positive electrode outlet slot 112 is provided with a first card slot 1121, and the first card slot 1121 is used to install the first collector plate gasket 510; the side wall of the negative electrode outlet slot 122 is provided with a second card slot 1221, and the second card slot 1221 is used to install the second collector plate gasket 520. That is, two slots are respectively provided on the two side walls of the positive electrode outlet slot 112, and the openings of the two slots are opposite to each other, forming the first card slot 1121. Two slots are also respectively provided on the two side walls of the negative electrode outlet slot 122, and the openings of the two slots are opposite to each other, forming the second card slot 1221. The two slots in this embodiment are rectangular slots. Of course, the shape and depth of the slot can be determined according to the collector plate gasket 500 used, as long as the collector plate gasket 500 can be stably installed, and its shape and depth are not limited here.

[0051] Please continue reading Figure 4 and Figure 5 In order to improve the structural stability of the current collector plate gasket 500 after installation, the bottom wall of the positive electrode outlet slot 112 in this embodiment is provided with a first protrusion 1122, and the first protrusion 1122 is used to support the first current collector plate gasket 510; the bottom wall of the negative electrode outlet slot 122 is provided with a second protrusion 1222, and the second protrusion 1222 is used to support the second current collector plate gasket 520. The first protrusion 1122 and the second protrusion 1222 each have a supporting plane, and the supporting plane abuts against the current collector plate gasket 500. The first protrusion 1122 and the second protrusion 1222 play a supporting role on the current collector plate gasket 500 to ensure its installation stability.

[0052] In order to protect the connection between the positive electrode current collecting plate 200 and the negative electrode current collecting plate 300 and the external power source, please refer to Figure 4 and Figure 5 , and combined with Figure 2 The battery cell fixing assembly 100 in this embodiment also includes a positive electrode outlet cover plate 130 and a negative electrode outlet cover plate 140. The positive electrode outlet cover plate 130 is detachably connected to the first battery cell fixing bracket 110, and the positive electrode outlet cover plate 130 is used to cover the positive electrode outlet groove 112; the negative electrode outlet cover plate 140 is detachably connected to the first battery cell fixing bracket 110 or the second battery cell fixing bracket 120, and the negative electrode outlet cover plate 140 is used to cover the negative electrode outlet groove 122.

[0053] Specifically, the positive electrode outlet cover plate 130 in this embodiment is snap-connected with the first battery cell fixing bracket 110, and / or the negative electrode outlet cover plate 140 is snap-connected with the first battery cell fixing bracket 110 or the second battery cell fixing bracket 120. A snap groove and / or a snap structure are provided on both the positive electrode outlet cover plate 130 and the negative electrode outlet cover plate 140, and correspondingly, a snap structure and a snap groove matching the snap groove and the snap structure are provided on the first battery cell fixing bracket 110 and the second fixing bracket. In this embodiment, a snap block is provided on the top surface of the first snap groove 1121 or the second snap groove 1221, and the snap block is spaced apart from the side wall of the first battery cell holding groove 111 or the second battery cell holding groove 121. A snap groove is provided on the other side wall of the first battery cell holding groove 111 or the second battery cell holding groove 121 away from the snap block. One end of the cover plate is provided with a snap groove, which is snapped with the snap block, and the other end of the cover plate is snapped into the snap groove, and this end of the cover plate has a bending design to achieve snap connection with the snap groove. Of course, other snap connection structures can also be used to achieve snap connection between the positive electrode outlet cover plate 130 and the first battery cell fixing bracket 110, and / or the negative electrode outlet cover plate 140 and the first battery cell fixing bracket 110 or the second battery cell fixing bracket 120, which are not limited here.

[0054] In addition, the positive electrode outlet cover plate 130 and the first battery cell fixing bracket 110 may also be connected in a detachable manner such as bolt connection, and the negative electrode outlet cover plate 140 and the first battery cell fixing bracket 110 or the second battery cell 400 may also be fixed in a detachable manner such as bolt connection, which is not limited here. It only needs to protect the positive electrode current collecting plate 200 and the negative electrode current collecting plate 300, and the positive and negative electrodes can be exposed when external wiring is required.

[0055] See also Figure 4 and Figure 5 , and combined with Figure 1 and Figure 3 In this embodiment, the number of the first battery cell holding groove 111 and the second battery cell holding groove 121 are both multiple, and the first battery cell holding groove 111 corresponds to the second battery cell holding groove 121 one by one. Each first battery cell holding groove 111 and the corresponding second battery cell holding groove 121 are used together to clamp a layer of battery cells 400. The number of the first battery cell holding groove 111 and the second battery cell holding groove 121 is determined according to the number of layers of battery cells 400 that need to be installed and fixed. In this embodiment, the battery cell fixing assembly 100 is used to install cylindrical battery cells 400, so the first battery cell holding groove 111 and the second battery cell holding groove 121 are arc-shaped. Of course, when installing square battery cells 400, the first battery cell holding groove 111 and the second battery cell holding groove 121 can be designed to be square. The shape and number of the first battery cell holding groove 111 and the second battery cell holding groove 121 are designed according to the number of battery cells 400 and the adaptability of the battery cells 400 in series and parallel, and are not limited here.

[0056] Please continue reading Figure 4 and Figure 5 The first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 are further provided with mounting holes 113, and the mounting holes 113 are used to connect with an external shell, such as a shell of an electric vehicle.

[0057] According to a battery cell fixing assembly 100 provided in this embodiment, the installation process is as follows:

[0058] A plurality of battery cells 400 are bonded side by side in a first direction to form a layer of battery cells 400, and a plurality of battery cells 400 are arranged side by side in a second direction to form a multi-layer battery cell 400, and the first direction is perpendicular to the second direction. The first battery cell holding groove 111 clamps one end of at least one layer of battery cells 400, and the second battery cell holding groove 121 clamps the other end of at least one layer of battery cells 400, so that the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 jointly clamp at least one layer of battery cells 400. The plurality of battery cells 400 are connected in series or in parallel through current collectors, and then all current collectors are connected through wiring harnesses or FPC boards. The positive current collector 200 is connected to the anode of a battery cell 400, and part of the positive current collector 200 is installed in the positive outlet groove 112; the negative current collector 300 is connected to the cathode of the battery cell 400, and part of the negative current collector 300 is installed in the negative outlet groove 122 to form a loop.

[0059] In summary, the battery cell fixing assembly 100 includes a first battery cell fixing bracket 110 and a second battery cell fixing bracket 120. The first battery cell fixing bracket 110 is provided with a first battery cell holding groove 111; the second battery cell fixing bracket 120 is provided with a second battery cell holding groove 121; the first battery cell holding groove 111 is used to clamp one end of at least one layer of battery cells 400, and the second battery cell holding groove 121 is used to clamp the other end of at least one layer of battery cells 400, so that the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 are used together to clamp at least one layer of battery cells 400. The first battery cell fixing bracket 110 is provided with a positive electrode outlet groove 112 and a negative electrode outlet groove 122 on a side away from the first battery cell holding groove 111; or, the first battery cell fixing bracket 110 is provided with a positive electrode outlet groove 112 on a side away from the first battery cell holding groove 111, and the second battery cell fixing bracket 120 is provided with a negative electrode outlet groove 122 on a side away from the second battery cell holding groove 121. The positive electrode outlet groove 112 is used to install the positive electrode collector plate 200, and the negative electrode outlet groove 122 is used to install the negative electrode collector plate 300. By setting the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120, the structural design of the end plates on both sides of the battery module 1000 and the upper and lower cover plates can be eliminated, and all the battery cells 400 can be clamped and fixed only by the first battery cell fixing bracket 110 and the second battery cell fixing bracket 120 to form the battery module 1000. The installation structure of the battery module 1000 is reduced, the installation process is simplified, and the production cost is reduced. By setting the positive electrode outlet groove 112 and the negative electrode outlet groove 122, it is also convenient to lead out the positive and negative electrodes after the collector plate is connected to all the battery cells 400, which is convenient for the electrical connection of the battery module 1000, thereby simplifying the structure of the battery module 1000 and reducing the production cost.

[0060] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell fixing assembly, characterized in that: include: A first battery cell fixing bracket (110), wherein the first battery cell fixing bracket (110) is provided with a first battery cell holding groove (111); A second battery cell fixing bracket (120), wherein the second battery cell fixing bracket (120) is provided with a second battery cell holding groove (121); the first battery cell holding groove (111) is used to clamp one end of at least one layer of battery cells (400), and the second battery cell holding groove (121) is used to clamp the other end of the at least one layer of battery cells (400), so that the first battery cell fixing bracket (110) and the second battery cell fixing bracket (120) are used together to clamp the at least one layer of battery cells (400); A positive electrode outlet groove (112) and a negative electrode outlet groove (122) are provided on a side of the first battery cell fixing bracket (110) away from the first battery cell holding groove (111); or, a positive electrode outlet groove (112) is provided on a side of the first battery cell fixing bracket (110) away from the first battery cell holding groove (111), and a negative electrode outlet groove (122) is provided on a side of the second battery cell fixing bracket (120) away from the second battery cell holding groove (121); the positive electrode outlet groove (112) is used to install a positive electrode current collecting plate (200), and the negative electrode outlet groove (122) is used to install a negative electrode current collecting plate (300).

2. The battery cell fixing assembly according to claim 1, characterized in that: A first card slot (1121) is provided on the side wall of the positive electrode outlet slot (112), and the first card slot (1121) is used to install a first current collecting plate gasket (510); a second card slot (1221) is provided on the side wall of the negative electrode outlet slot (122), and the second card slot (1221) is used to install a second current collecting plate gasket (520).

3. The battery cell fixing assembly according to claim 2, characterized in that: The bottom wall of the positive electrode outlet slot (112) is provided with a first protrusion (1122), and the first protrusion (1122) is used to support the first current collecting plate gasket (510); the bottom wall of the negative electrode outlet slot (122) is provided with a second protrusion (1222), and the second protrusion (1222) is used to support the second current collecting plate gasket (520).

4. The battery cell fixing assembly according to claim 1, characterized in that: The battery cell fixing assembly (100) further comprises a positive electrode outlet cover plate (130) and a negative electrode outlet cover plate (140); the positive electrode outlet cover plate (130) is detachably connected to the first battery cell fixing bracket (110), and the positive electrode outlet cover plate (130) is used to cover the positive electrode outlet slot (112); the negative electrode outlet cover plate (140) is detachably connected to the first battery cell fixing bracket (110) or the second battery cell fixing bracket (120), and the negative electrode outlet cover plate (140) is used to cover the negative electrode outlet slot (122).

5. The battery cell fixing assembly according to claim 4, characterized in that: The positive electrode outlet cover plate (130) is snap-connected to the first battery cell fixing bracket (110), and / or the negative electrode outlet cover plate (140) is snap-connected to the first battery cell fixing bracket (110) or the second battery cell fixing bracket (120).

6. The battery cell fixing assembly according to claim 1, characterized in that: The number of the first battery cell holding grooves (111) and the number of the second battery cell holding grooves (121) are both multiple, the first battery cell holding grooves (111) and the second battery cell holding grooves (121) correspond one to one, and each of the first battery cell holding grooves (111) and the corresponding second battery cell holding grooves (121) are used together to clamp a layer of the battery cells (400).

7. The battery cell fixing assembly according to claim 6, characterized in that: The battery cell fixing assembly (100) further comprises a keel (150), one end of the keel (150) being connected to the first battery cell fixing bracket (110), and the other end of the keel (150) being connected to the second battery cell fixing bracket (120), and the keel (150) being used to space two adjacent layers of the battery cells (400).

8. The battery cell fixing assembly according to claim 1, characterized in that: The battery cell fixing assembly (100) further comprises a first clamping plate (160) and a second clamping plate (170), wherein the first clamping plate (160) is used to connect to the top of the battery cell (400), and the second clamping plate (170) is used to connect to the bottom of the battery cell (400), and the first clamping plate (160) and the second clamping plate (170) are used together to insulate and protect all the battery cells (400); The first clamping plate (160) and the second clamping plate (170) are both provided with a plurality of explosion-proof valve avoidance holes (161).

9. A battery module, characterized in that: The invention comprises a battery cell fixing assembly (100) according to any one of claims 1 to 8, a positive current collecting plate (200), a negative current collecting plate (300), a plurality of current collecting plates and a plurality of battery cells (400), wherein the plurality of battery cells (400) are arranged in an array to form at least one layer of battery cells (400) arranged side by side; one end of the at least one layer of battery cells (400) is connected to the first battery cell holding groove (111), and the other end of the at least one layer of battery cells (400) is connected to the second battery cell holding groove (121), so that the first battery cell fixing bracket (110) and the second battery cell fixing bracket (120) are used together to clamp the at least one layer of battery cells (400); The positive electrode current collecting plate (200) is connected to the anode of one of the battery cells (400), and part of the positive electrode current collecting plate (200) is installed in the positive electrode outlet slot (112); the negative electrode current collecting plate (300) is connected to the cathode of one of the battery cells (400), and part of the negative electrode current collecting plate (300) is installed in the negative electrode outlet slot (122).

10. An electric vehicle, characterized in that: It comprises a vehicle body and the battery module (1000) according to claim 9, wherein the battery module (1000) is arranged in the vehicle body.

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