Battery module, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a battery module, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The battery module comprises a skin plate, an end plate and a plurality of battery cells, and the plurality of battery cells are arranged along a first direction; the skin plates comprise a first skin plate and a second skin plate, and the first skin plate and the second skin plate are respectively adhered to two opposite sides of the plurality of battery cells along the second direction; the end plates comprise a first end plate and a second end plate, the first end plate and the second end plate are arranged on the two opposite sides of the battery cells in the first direction respectively, the first end plate is connected with the first skin plate and the second skin plate at the same time, and the second end plate is connected with the first skin plate and the second skin plate at the same time. The battery module can reduce the use amount of structural parts, improve the assembly efficiency and reduce the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery module, a battery pack and a new energy vehicle. Background Art

[0002] In the power battery industry, the current common battery module structure usually uses plastic parts, C-shaped irons, long screws and other structural parts to form a structural frame through welding and other methods, and then the battery cells are set in the frame structure. After the module is formed, it is placed in the battery shell for secondary fixation.

[0003] However, this frame structure has many structural parts, resulting in low assembly efficiency and increased costs. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module, a battery pack and a new energy vehicle, which can reduce the amount of structural parts, improve assembly efficiency and reduce costs.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a battery module, comprising:

[0007] A plurality of battery cells, wherein the plurality of battery cells are arranged along a first direction;

[0008] A skin plate, the skin plate comprising a first skin plate and a second skin plate, the first skin plate and the second skin plate are respectively bonded to two opposite sides of the plurality of battery cells along the second direction; and

[0009] An end plate, the end plate comprising a first end plate and a second end plate, the first end plate and the second end plate are respectively arranged on two opposite sides of the plurality of battery cells along the first direction, and the first end plate is connected to the first skin plate and the second skin plate at the same time, and the second end plate is connected to the first skin plate and the second skin plate at the same time;

[0010] The first direction and the second direction form an angle.

[0011] In an optional embodiment, the number of the second skin panels is multiple, the multiple second skin panels are spaced apart along the third direction, and are all bonded to the multiple battery cells; the battery module further comprises at least one thermal pad, the at least one thermal pad is bonded to a side of the multiple battery cells away from the first skin panel, and one thermal pad is provided between two adjacent second skin panels;

[0012] The first direction, the second direction and the third direction are perpendicular to each other.

[0013] In an optional embodiment, the battery module further includes a heating film, and the heating film is arranged between the first skin plate and the plurality of battery cells.

[0014] In an optional embodiment, the battery module further includes a first insulating plate and a second insulating plate, wherein the first insulating plate is disposed between the first end plate and the plurality of battery cells, and the second insulating plate is disposed between the second end plate and the plurality of battery cells.

[0015] In an optional embodiment, the battery module further includes a reinforcing plate, which is disposed between any two adjacent battery cells and located between the first skin plate and the second skin plate, and the reinforcing plate is simultaneously connected to the first skin plate and the second skin plate.

[0016] In an optional embodiment, the battery module further includes a third insulating plate, and the third insulating plate is provided between the reinforcing plate and two adjacent battery cells.

[0017] In an optional embodiment, the plurality of battery cells have positive electrode columns and negative electrode columns, the positive electrode columns and the negative electrode columns are respectively arranged on opposite sides of the plurality of battery cells along the third direction, and the positive electrode columns and the negative electrode columns of any two adjacent battery cells are staggered along the first direction;

[0018] The battery module further includes a plurality of first busbars and a plurality of second busbars, wherein the plurality of first busbars and the plurality of second busbars are arranged at intervals along the third direction, and the first busbars and the second busbars are both used to connect to the positive electrode column and the negative electrode column, so that the plurality of battery cells are sequentially connected in series;

[0019] The first direction, the second direction and the third direction are perpendicular to each other.

[0020] In an optional embodiment, the plurality of battery cells are further provided with a positive electrode adapter post and a negative electrode adapter post, the positive electrode adapter post and the positive electrode post are located on the same side, and the negative electrode adapter post and the negative electrode post are located on the same side; the battery module further comprises a flexible circuit board and a plurality of nickel collection sheets, the flexible circuit board is connected to the plurality of first bus bars, and the plurality of nickel collection sheets are connected to the plurality of second bus bars in a one-to-one correspondence; or, the flexible circuit board is connected to the plurality of second bus bars, and the plurality of nickel collection sheets are connected to the plurality of first bus bars in a one-to-one correspondence;

[0021] Wherein, the collection nickel sheet is used to be connected to the positive electrode adapter post or the negative electrode adapter post to transmit the positive electrode signal or the negative electrode signal of the battery cell to the flexible circuit board.

[0022] In a second aspect, the utility model provides a battery pack, comprising the battery module described in any one of the aforementioned embodiments.

[0023] In a third aspect, the utility model provides a new energy vehicle, comprising the battery pack described in the aforementioned embodiment.

[0024] The beneficial effects of the embodiments of the utility model include:

[0025] The battery module includes a skin plate, an end plate and a plurality of battery cells, wherein the plurality of battery cells are arranged in a first direction; the skin plate includes a first skin plate and a second skin plate, wherein the first skin plate and the second skin plate are respectively bonded to two opposite sides of the plurality of battery cells along a second direction; the end plate includes a first end plate and a second end plate, wherein the first end plate and the second end plate are respectively arranged on two opposite sides of the plurality of battery cells along the first direction, and the first end plate is simultaneously connected to the first skin plate and the second skin plate, and the second end plate is simultaneously connected to the first skin plate and the second skin plate. In other words, the battery cells can be fixed in the first direction by the first end plate and the second end plate, and the battery cells can be fixed in the second direction by bonding the first skin plate and the second skin plate to both sides of the battery cells, and the connection between the skin plate and the end plate further stabilizes the battery cells, thereby simplifying the overall structure of the battery module, reducing the amount of structural parts, and correspondingly reducing the welding operation steps in the prior art, thereby improving assembly efficiency and reducing costs.

[0026] The battery pack includes a battery module and has all the beneficial effects of the battery module.

[0027] The new energy vehicle includes a battery pack, which has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;

[0030] Figure 2 A schematic structural diagram of a battery module from a first perspective provided by an embodiment of the utility model;

[0031] Figure 3 An exploded view of a battery module provided by an embodiment of the utility model;

[0032] Figure 4A schematic diagram of the arrangement of multiple battery cells provided in an embodiment of the utility model;

[0033] Figure 5 for Figure 2 A partial enlarged view of the middle A;

[0034] Figure 6 A schematic diagram of partial assembly of multiple battery cells and multiple second bus bars provided in an embodiment of the utility model;

[0035] Figure 7 A schematic structural diagram of a battery module from a second viewing angle provided by an embodiment of the utility model;

[0036] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0037] Fig. 9 A flexible circuit board is provided in an embodiment of the utility model.

[0038] Icons: 1000-new energy vehicle; 1100-battery pack; 100-battery module; 10-battery cell; 11-positive pole; 12-negative pole; 13-positive adapter pole; 14-negative adapter pole; 20-skin plate; 21-first skin plate; 22-second skin plate; 30-end plate; 31-first end plate; 32-second end plate; 40-thermal pad; 50-heating film; 61-first insulating plate; 62-second insulating plate; 63-third insulating plate; 70-reinforcement plate; 71-first fixing protrusion; 72-second fixing protrusion; 81-first bus; 82-second bus; 83-collection nickel sheet; 90-flexible circuit board; 91-circuit board body; 92-first connection end; 93-second connection end; 1200-vehicle body. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] As described in the background technology, the current common battery module structure usually uses plastic parts, C-shaped irons, long screws and other structural parts to form a structural frame through welding and other methods, and then the battery cells are arranged in the frame structure to form a module and then placed in the battery shell for secondary fixation; however, this frame structure has many structural parts, resulting in low assembly efficiency and increased costs.

[0046] Based on this, please refer to Figure 1-Figure 9 The embodiments of the present invention provide a battery module 100, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, they can reduce the amount of structural parts, improve assembly efficiency, and reduce costs.

[0047] It should be noted that the first direction mentioned in the following content is Figure 1-Figure 9 The X direction is shown in the figure, and the second direction is Figure 1-Figure 9 The Z direction is shown in the figure, and the third direction is Figure 1-Figure 9 The battery module 100, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0048] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200 . The battery pack 1100 is installed on the vehicle body 1200 , thereby providing electric energy for the vehicle body 1200 to realize various functions of the vehicle body 1200 .

[0049] Specifically, this embodiment provides a battery pack 1100, which includes a battery housing and a battery module 100. The battery module 100 is disposed in the battery housing. The battery module 100 serves as an energy source to provide electrical energy to a vehicle body 1200, thereby achieving normal operation of the new energy vehicle 1000. For those skilled in the art, the battery pack 1100 may also include other components such as a battery management system, which will not be described in detail in this embodiment.

[0050] Please refer to Figure 2 and Figure 3 , Figure 2 A schematic structural diagram of a battery module 100 provided in this embodiment from a first perspective, Figure 3 The exploded view of the battery module 100 provided in this embodiment is combined with Figure 2 and Figure 3 The battery module 100 includes a skin plate 20, an end plate 30 and a plurality of battery cells 10, and the plurality of battery cells 10 are arranged along a first direction; the skin plate 20 includes a first skin plate 21 and a second skin plate 22, and the first skin plate 21 and the second skin plate 22 are respectively bonded to the two opposite sides of the plurality of battery cells 10 along a second direction; the end plate 30 includes a first end plate 31 and a second end plate 32, and the first end plate 31 and the second end plate 32 are respectively arranged on the two opposite sides of the plurality of battery cells 10 along the first direction, and the first end plate 31 is connected to the first skin plate 21 and the second skin plate 22 at the same time, and the second end plate 32 is connected to the first skin plate 21 and the second skin plate 22 at the same time; wherein the first direction forms an angle with the second direction.

[0051] That is to say, the battery cell 10 can be fixed in the first direction by the first end plate 31 and the second end plate 32, and the battery cell 10 can be fixed in the second direction by bonding the first skin plate 21 and the second skin plate 22 to the two sides of the battery cell 10, and the connection between the skin plate 20 and the end plate 30 further stabilizes the battery cell 10, so that the overall structure of the battery module 100 is simple, the amount of structural parts is reduced, and the welding operation steps in the prior art are correspondingly reduced, thereby improving assembly efficiency and reducing costs.

[0052] It should be noted that the first skin plate 21 and the second skin plate 22 can be bonded and fixed to the battery cell 10 by applying structural adhesive. It is easy to understand that this method of bonding and fixing only on the two sides of the battery cell 10 is lower in cost than the operation of gluing the entire battery cell in the prior art, and can be convenient for disassembly, maintenance and replacement at a later time.

[0053] In order to facilitate heat dissipation of the battery cell 10, please combine Figure 3 There are multiple second skin plates 22, which are spaced apart along the third direction and bonded to multiple battery cells 10; the battery module 100 also includes at least one thermal pad 40, which is bonded to one side of the multiple battery cells 10 away from the first skin plate 21, and a thermal pad 40 is provided between two adjacent second skin plates 22; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0054] like Figure 3 As shown, the second skin plate 22 and the thermal pad 40 are arranged in sequence in the third direction, and while fixing the battery cell 10, the thermal pad 40 contacts the battery cell 10 for heat conduction and heat dissipation. It can be understood that the thermal pad 40 and the battery cell 10 can be coated with thermal conductive glue to further improve the heat conduction and fixation effect. The thermal pad 40 can contact the liquid cooling pipe in the battery pack 1100, so that the heat of the battery cell 10 is taken away by the liquid cooling pipe to achieve heat dissipation.

[0055] It should be noted that, in this embodiment, the number of the second skin panels 22 is four, the number of the thermal pads 40 is three, and a thermal pad 40 is provided between two adjacent second skin panels 22. Of course, in other embodiments, the number of the second skin panels 22 and the thermal pads 40 is not limited thereto, and needs to be selected and determined according to actual design requirements.

[0056] Furthermore, in order to facilitate heating of the battery cells 10, the battery module 100 further includes a heating film 50, which is disposed between the first skin plate 21 and the plurality of battery cells 10. The heating film 50 is connected to the heating device in the battery pack 1100 or the vehicle body 1200, thereby heating the plurality of battery cells 10, so that the battery cells 10 can work continuously and stably.

[0057] It should be noted that in order to improve the overall structural strength of the battery module 100, in the present embodiment, the first end plate 31 and the second end plate 32 are both metal structures. Therefore, in order to improve the insulation effect, the battery module 100 also includes a first insulating plate 61 and a second insulating plate 62. The first insulating plate 61 is arranged between the first end plate 31 and the plurality of battery cells 10, and the second insulating plate 62 is arranged between the second end plate 32 and the plurality of battery cells 10.

[0058] Please continue to combine Figure 3 In order to further improve the overall structural strength of the battery module 100, the battery module 100 also includes a reinforcing plate 70. The reinforcing plate 70 is arranged between any two adjacent battery cells 10 and is located between the first skin plate 21 and the second skin plate 22. The reinforcing plate 70 is connected to the first skin plate 21 and the second skin plate 22 at the same time.

[0059] It should be noted that, in this embodiment, the reinforcing plate 70 is located in the middle of the plurality of battery cells 10, and the plurality of battery cells 10 can be divided into two groups of battery cells 10 of substantially the same number, which are respectively fixed to the first end plate 31 and the second end plate 32, thereby further improving the structural stability of the battery module 100. Of course, in some other embodiments, the reinforcing plate 70 can also be located at other positions in the plurality of battery cells 10, and its specific setting position needs to be determined according to actual design requirements.

[0060] To improve the insulation effect, the battery module 100 further includes a third insulation plate 63 . A third insulation plate 63 is disposed between the reinforcing plate 70 and two adjacent battery cells 10 .

[0061] Please refer to Figure 4 , Figure 4 The schematic diagram of the arrangement of multiple battery cells 10 provided in this embodiment, combined with Figure 4 The plurality of battery cells 10 have positive poles 11 and negative poles 12, which are respectively arranged on opposite sides of the plurality of battery cells 10 along the third direction, and the positive poles 11 and negative poles 12 of any two adjacent battery cells 10 are arranged in a staggered arrangement along the first direction. In other words, the plurality of positive poles 11 and negative poles 12 located on the same side are arranged in a staggered arrangement along the first direction, which can be conveniently connected to the bus bar to realize the overall series connection of the plurality of battery cells 10.

[0062] Specifically, Figure 3 As shown, the battery module 100 further includes a plurality of first bus bars 81 and a plurality of second bus bars 82 ( Figure 6 For further information, please refer to Figure 5 and Figure 6 , Figure 5 for Figure 2 A partial enlarged view of point A in the middle. Figure 6 A partial assembly diagram of multiple battery cells 10 and multiple second bus bars 82 provided in this embodiment; Figure 3 , Figure 5 and Figure 6 In this embodiment, a plurality of first bus bars 81 and a plurality of second bus bars 82 are spaced apart along a third direction, and the first bus bars 81 and the second bus bars 82 are both used to connect to the positive electrode column 11 and the negative electrode column 12 so that the plurality of battery cells 10 are connected in series in sequence.

[0063] Combination Figure 5 and Figure 6 , it can be explained by taking three adjacent battery cells 10 as an example: for the convenience of explanation, the three adjacent battery cells 10 are sequentially called the first battery cell 10, the second battery cell 10 and the third battery cell 10, the positive electrode column 11 of the second battery cell 10 in the middle is connected to the negative electrode column 12 of the first battery cell 10 through the first bus 81, and the negative electrode column 12 of the second battery cell 10 on the other side is connected to the positive electrode column 11 of the third battery cell 10 through the second bus 82; thus, through this sequential connection method, the overall series connection of multiple batteries is realized.

[0064] Please continue to combine Figure 3 In order to realize the signal collection of multiple battery cells 10, the battery module 100 also includes a flexible circuit board 90 and multiple nickel sheets 83. Further, in order to facilitate signal collection and reduce manufacturing difficulty and cost, please refer to Figure 7 and Figure 8 , Figure 7 A schematic diagram of the structure of the battery module 100 provided in this embodiment from a second viewing angle, Figure 8 for Figure 7 The local enlarged picture of B in the middle, combined with Figure 5-Figure 8 The multiple battery cells 10 are also provided with a positive electrode adapter post 13 and a negative electrode adapter post 14. The positive electrode adapter post 13 and the positive electrode post 11 are located on the same side, and the negative electrode adapter post 14 and the negative electrode post 12 are located on the same side. The nickel sheet 83 is used to connect with the positive electrode adapter post 13 or the negative electrode adapter post 14 to transmit the positive electrode signal or the negative electrode signal of the battery cell 10 to the flexible circuit board 90.

[0065] It should be noted that a positive electrode transfer post 13 and a negative electrode transfer post 14 are provided on opposite sides of each battery cell 10, and the collection nickel sheet 83 is connected to the bus and the positive electrode transfer post 13 at the same time. In this way, the positive electrode signal of the battery cell 10 can be transmitted to the negative electrode transfer post 14 through the positive electrode transfer post 13, and then connected to the negative electrode transfer post 14 through the flexible circuit board 90. In addition, the flexible circuit board 90 can also be connected to the bus located on the negative electrode transfer post 14 to transfer the signal on one side to the other side, thereby realizing the collection of the positive and negative signals of the battery cell 10 on the same side, thereby reducing the difficulty of signal collection and the corresponding assembly difficulty, thereby further improving the assembly efficiency and reducing the cost.

[0066] It should be pointed out that the positive electrode adapter post 13 and the negative electrode adapter post 14 can be understood as two interconnected conductors or wires, thereby realizing signal transfer.

[0067] Please combine Figure 5 and Figure 8 It should also be noted that, in this embodiment, the flexible circuit board 90 is connected to a plurality of first bus bars 81, and a plurality of collection nickel sheets 83 are connected to a plurality of second bus bars 82 in a one-to-one correspondence. Taking one of the battery cells 10 as an example, the positive pole 11 of the battery cell 10 is connected to the first bus bar 81, and the negative pole 12 is connected to the second bus bar 82; the collection nickel sheet 83 is connected to the first bus bar 81 and the positive transfer pole 13 at the same time, and the flexible circuit board 90 is connected to the negative transfer pole 14 on the other side of the battery cell 10, so as to realize the transfer of the positive signal of the battery cell 10 to the other side; at the same time, the flexible circuit board 90 is connected to the second bus bar 82, so as to realize the collection of the negative and positive signals of the battery cell 10 on the same side.

[0068] Of course, in other embodiments, the flexible circuit board 90 can also be connected to multiple second bus bars 82, and multiple collection nickel sheets 83 can be connected one-to-one with multiple first bus bars 81. In addition, for signal transfer, the negative electrode signal of the battery cell 10 can also be transferred to the positive electrode, as long as the signal collection on the same side can be achieved.

[0069] Specifically, please refer to Fig. 9 , Fig. 9 The schematic diagram of the structure of the flexible circuit board 90 provided in this embodiment, combined with Fig. 9 The flexible circuit board 90 includes a circuit board body 91, a plurality of first connection ends 92 and a plurality of second connection ends 93, wherein the plurality of first connection ends 92 and the plurality of second connection ends 93 are spaced apart from each other on the circuit board body 91 along a first direction; in this embodiment, the flexible circuit board 90 includes a circuit board body 91, a plurality of first connection ends 92 and a plurality of second connection ends 93, wherein the plurality of first connection ends 92 and the plurality of second connection ends 93 are spaced apart from each other along a first direction on the circuit board body 91; Figure 8 and Fig. 9 The first connection end 92 is connected to the second bus bar 82 , and the second connection end 93 is connected to the positive electrode transfer post 13 or the negative electrode transfer post 14 of the battery cell 10 .

[0070] Please combine Figure 2 and Figure 7 In order to further fix the reinforcing plate 70 in the battery shell of the battery pack 1100, the reinforcing plate 70 is provided with a first fixing protrusion 71 and a second fixing protrusion 72 at both ends along the third direction, respectively. The first fixing protrusion 71 and the second fixing protrusion 72 are used to connect with the battery shell, thereby facilitating the fixation of the battery module 100 and avoiding interference with other components such as the battery cell 10 during the installation process.

[0071] In summary, an embodiment of the utility model provides a battery module 100, a battery pack 1100 and a new energy vehicle 1000, wherein the battery module 100 includes a skin plate 20, an end plate 30 and a plurality of battery cells 10, wherein the plurality of battery cells 10 are arranged along a first direction; the skin plate 20 includes a first skin plate 21 and a second skin plate 22, wherein the first skin plate 21 and the second skin plate 22 are respectively bonded to two opposite sides of the plurality of battery cells 10 along a second direction; the end plate 30 includes a first end plate 31 and a second end plate 32, wherein the first end plate 31 and the second end plate 32 are respectively arranged on two opposite sides of the plurality of battery cells 10 along the first direction, and the first end plate 31 is connected to the first skin plate 21 and the second skin plate 22 at the same time, and the second end plate 32 is connected to the first skin plate 21 and the second skin plate 22 at the same time. That is to say, the battery cell 10 can be fixed in the first direction by the first end plate 31 and the second end plate 32, and the battery cell 10 can be fixed in the second direction by bonding the first skin plate 21 and the second skin plate 22 to the two sides of the battery cell 10, and the connection between the skin plate 20 and the end plate 30 further stabilizes the battery cell 10, so that the overall structure of the battery module 100 is simple, the amount of structural parts is reduced, and the welding operation steps in the prior art are correspondingly reduced, thereby improving assembly efficiency and reducing costs.

[0072] The battery pack 1100 includes the battery module 100 , and has all the functions and beneficial effects of the battery module 100 .

[0073] The new energy vehicle 1000 includes a battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0074] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery module, characterized in that: include: A plurality of battery cells (10), wherein the plurality of battery cells (10) are arranged in an array along a first direction; A skin plate (20), the skin plate (20) comprising a first skin plate (21) and a second skin plate (22), the first skin plate (21) and the second skin plate (22) being respectively bonded to two opposite sides of the plurality of battery cells (10) along a second direction; and An end plate (30), the end plate (30) comprising a first end plate (31) and a second end plate (32), the first end plate (31) and the second end plate (32) being respectively arranged on two opposite sides of the plurality of battery cells (10) along the first direction, and the first end plate (31) being connected to both the first skin plate (21) and the second skin plate (22), and the second end plate (32) being connected to both the first skin plate (21) and the second skin plate (22); The first direction and the second direction form an angle.

2. The battery module according to claim 1, characterized in that: There are a plurality of second skin plates (22), the plurality of second skin plates (22) are arranged at intervals along the third direction, and are all bonded to the plurality of battery cells (10); the battery module (100) further comprises at least one thermally conductive pad (40), the at least one thermally conductive pad (40) is bonded to a side of the plurality of battery cells (10) away from the first skin plate (21), and one thermally conductive pad (40) is provided between two adjacent second skin plates (22); The first direction, the second direction and the third direction are perpendicular to each other.

3. The battery module according to claim 1, characterized in that: The battery module (100) further comprises a heating film (50), wherein the heating film (50) is arranged between the first skin plate (21) and the plurality of battery cells (10).

4. The battery module according to claim 1, characterized in that: The battery module (100) further comprises a first insulating plate (61) and a second insulating plate (62), wherein the first insulating plate (61) is arranged between the first end plate (31) and the plurality of battery cells (10), and the second insulating plate (62) is arranged between the second end plate (32) and the plurality of battery cells (10).

5. The battery module according to claim 1, characterized in that: The battery module (100) further comprises a reinforcing plate (70), wherein the reinforcing plate (70) is arranged between any two adjacent battery cells (10) and is located between the first skin plate (21) and the second skin plate (22), and the reinforcing plate (70) is connected to both the first skin plate (21) and the second skin plate (22).

6. The battery module according to claim 5, characterized in that: The battery module (100) further comprises a third insulating plate (63), and the third insulating plate (63) is provided between the reinforcing plate (70) and two adjacent battery cells (10).

7. The battery module according to claim 1, characterized in that: The plurality of battery cells (10) have positive electrode columns (11) and negative electrode columns (12), the positive electrode columns (11) and the negative electrode columns (12) are respectively arranged on two opposite sides of the plurality of battery cells (10) along a third direction, and the positive electrode columns (11) and the negative electrode columns (12) of any two adjacent battery cells (10) are arranged in a staggered manner along the first direction; The battery module (100) further comprises a plurality of first busbars (81) and a plurality of second busbars (82), wherein the plurality of first busbars (81) and the plurality of second busbars (82) are arranged at intervals along the third direction, and the first busbars (81) and the second busbars (82) are both used to connect to the positive electrode column (11) and the negative electrode column (12), so that the plurality of battery cells (10) are sequentially connected in series; The first direction, the second direction and the third direction are perpendicular to each other.

8. The battery module according to claim 7, characterized in that: The plurality of battery cells (10) are further provided with a positive electrode transfer column (13) and a negative electrode transfer column (14), wherein the positive electrode transfer column (13) and the positive electrode column (11) are located on the same side, and the negative electrode transfer column (14) and the negative electrode column (12) are located on the same side; the battery module (100) further comprises a flexible circuit board (90) and a plurality of nickel collection sheets (83), wherein the flexible circuit board (90) is connected to the plurality of first bus bars (81), and the plurality of nickel collection sheets (83) are connected to the plurality of second bus bars (82) in a one-to-one correspondence; or, the flexible circuit board (90) is connected to the plurality of second bus bars (82), and the plurality of nickel collection sheets (83) are connected to the plurality of first bus bars (81) in a one-to-one correspondence; The acquisition nickel sheet (83) is used to connect to the positive electrode transfer post (13) or the negative electrode transfer post (14) to transmit the positive electrode signal or the negative electrode signal of the battery cell (10) to the flexible circuit board (90).

9. A battery pack, characterized in that: A battery module (100) comprising any one of claims 1 to 8.

10. A new energy vehicle, characterized in that: Includes the battery pack (1100) as claimed in claim 9.

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