Battery module and vehicle

Abstract

The invention discloses a battery module and a vehicle, and relates to the technical field of vehicle-mounted power systems. The battery module comprises a single battery, an FPC (Flexible Printed Circuit), a connecting sheet and a connecting bar; the FPC is fixed on the surface of the single battery and is electrically connected with the single battery, the FPC is provided with a connecting part, a first gap, a second gap, a first through hole and a second through hole, the first gap and the first through hole are located at the first side of the connecting part, the first gap is located at the edge of the FPC, the second gap and the second through hole are located at the second side of the connecting part, the second gap is located at the edge of the FPC, and the first through hole is located at the second side of the connecting part. The second side is opposite to the first side; the two ends of the connecting piece are fixedly connected with the connecting part and the connecting bar respectively. According to the invention, the possibility of loosening between the FPC and the connecting sheet can be reduced, and the possibility of disconnection between the single battery and the BMS can be further reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle power systems, and particularly to a battery module and a vehicle. Background Art

[0002] In new energy vehicles, FPC (Flexible Printed Circuit) is often used to achieve electrical connection between a battery module and a BMS (Battery Manage System).

[0003] Among them, the battery module includes a connection row and nickel sheets. The connection row is used to achieve electrical connection between multiple single cells and the BMS. The nickel sheets are located between the FPC and the connection row, and are respectively welded and fixed to the FPC and the connection row.

[0004] The FPC is often pasted on the surface of the single cell. When the single cell expands due to heat, the FPC will also deform with the single cell, resulting in the part where the FPC is connected to the nickel sheet being torn by other parts, which may cause the FPC and the nickel sheet to become loose, thereby causing the connection between the corresponding single cell and the BMS to be disconnected. Summary of the Invention

[0005] Embodiments of the present disclosure provide a battery module and a vehicle, which can solve the above technical problems existing in the related art. The technical solutions are as follows:

[0006] In a first aspect, a battery module is provided. The battery module includes single cells, an FPC, connection pieces, and a connection row;

[0007] The FPC is fixed on the surface of the single cell and is electrically connected to the single cell. The FPC has a connection portion, a first notch, a second notch, a first through hole, and a second through hole. The first notch and the first through hole are located on a first side of the connection portion. The first notch is located at the edge of the FPC. The second notch and the second through hole are located on a second side of the connection portion. The second notch is located at the edge of the FPC. The second side is a side opposite to the first side;

[0008] Both ends of the connection piece are fixedly connected to the connection portion and the connection row respectively.

[0009] In some possible implementation manners, the battery module further includes a third through hole and a fourth through hole;

[0010] The third through hole is located on a side of the first through hole away from the first notch. At least a part of the third through hole extends along a specified direction. The specified direction is a direction in which the first side approaches or departs from the second side;

[0011] The fourth through-hole is located on a side of the second through-hole away from the second notch, and at least a part of the fourth through-hole extends in a specified direction.

[0012] In some possible implementation manners, at least a part of the third through-hole extends in a direction from the first side away from the second side, and at least a part of the fourth through-hole extends in a direction from the second side away from the first side.

[0013] In some possible implementation manners, a cross-section of an end of the third through-hole away from the first through-hole is circular; and / or,

[0014] A cross-section of an end of the fourth through-hole away from the second through-hole is circular.

[0015] In some possible implementation manners, a distance between the first notch and the first through-hole is less than a distance between the first through-hole and the third through-hole, and a distance between the second notch and the second through-hole is less than a distance between the second through-hole and the fourth through-hole.

[0016] In some possible implementation manners, a distance between the first notch and the first through-hole is 0.2 to 0.5 times a distance between the first through-hole and the third through-hole; and / or,

[0017] A distance between the second notch and the second through-hole is 0.2 to 0.5 times a distance between the second through-hole and the fourth through-hole.

[0018] In some possible implementation manners, the FPC has a first wire, a second wire, and a third wire. The first wire, the second wire, and the third wire are all used to connect the connection piece and the single cell. At least a part of the first wire extends toward the first side and is partially located between the first through-hole and the third through-hole. At least a part of the second wire extends toward the second side and is partially located between the second through-hole and the fourth through-hole. The third wire extends toward a third side of the connection portion, and the third side is a side adjacent to both the first side and the second side.

[0019] In some possible implementation manners, the FPC further has a fourth wire. The fourth wire connects the first wire, the second wire, and the third wire and is used to connect to the single cell.

[0020] In some possible implementation manners, the FPC further has a fuse. The fuse is located between the fourth wire and the single cell.

[0021] In some possible implementation manners, the connection portion has a vent hole. The vent hole communicates with the connection piece.

[0022] In a second aspect, a vehicle is provided, which includes the battery module provided by the first aspect and its possible implementation manners.

[0023] The beneficial effects brought by the technical solutions provided by the present disclosure at least include:

[0024] When the deformation of the FPC caused by the thermal expansion of the single battery reaches a certain degree, the connecting ribs between the first notch and the first through hole and / or the connecting ribs between the second notch and the second through hole will be torn, so that the connection between the connecting part and other parts of the FPC on the first side and / or the second side can be disconnected. In this way, the possibility of the connecting part being torn by other parts of the FPC can be reduced, so that the possibility of the connecting part being loosened from the connecting piece can be reduced, and further the possibility of the disconnection of the connection between the single battery and the BMS can be reduced.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of a battery module provided by an embodiment of the present disclosure;

[0028] Figure 2 is a partial schematic diagram of a battery module provided by an embodiment of the present disclosure;

[0029] Figure 3 is a schematic internal structure diagram of a battery module provided by an embodiment of the present disclosure;

[0030] Figure 4 is a partial schematic diagram of the internal structure of a battery module provided by an embodiment of the present disclosure.

[0031] REFERENCE SIGNS:

[0032] 1, FPC;

[0033] 11, connecting part; 111, ventilation hole;

[0034] 121, first notch; 122, second notch; 131, first through hole; 132, second through hole; 133, third through hole; 134, fourth through hole;

[0035] 141. First wire; 142. Second wire; 143. Third wire; 144. Fourth wire;

[0036] 15. Fuse;

[0037] 2. Connecting piece;

[0038] 3. Connecting row. Detailed implementation manner

[0039] To make the purpose, technical solution and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0040] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments may be combined with each other. The following will describe the present disclosure in detail with reference to the drawings and in combination with the embodiments.

[0041] In the battery module of a new energy vehicle, FPC is often used to realize the electrical connection between the single battery and the BMS.

[0042] Among them, the battery module includes a connecting row and nickel sheets. The connecting row is used to realize the electrical connection between multiple single batteries and the BMS. The nickel sheets are located between the FPC and the connecting row and are welded and fixed to the FPC and the connecting row respectively.

[0043] The FPC is often pasted on the surface of the single battery. When the single battery expands due to heat, the FPC will also deform with the single battery, resulting in the part where the FPC is connected to the nickel sheet being torn by other parts, which may cause the FPC and the nickel sheet to become loose, thereby causing the connection between the corresponding single battery and the BMS to be disconnected.

[0044] To solve the above technical problems, the embodiments of the present disclosure provide a battery module. As shown in Figure 1 、 Figure 2 , the battery module includes a single battery, FPC1, connecting piece 2 and connecting row 3. FPC1 is fixed on the surface of the single battery and is electrically connected to the single battery. FPC1 has a connecting portion 11, a first notch 121, a second notch 122, a first through hole 131 and a second through hole 132. The first notch 121 and the first through hole 131 are located on the first side of the connecting portion 11, and the first notch 121 is located at the edge of FPC1; the second notch 122 and the second through hole 132 are located on the second side of the connecting portion 11, the second notch 122 is located at the edge of FPC1, and the second side is the side opposite to the first side. The two ends of the connecting piece 2 are fixedly connected to the connecting portion 11 and the connecting row 3 respectively.

[0045] Thus, when the single cell expands due to heat and causes the deformation of the FPC1 to reach a certain degree, the connecting ribs between the first notch 121 and the first through hole 131 and / or the connecting ribs between the second notch 122 and the second through hole 132 will be torn, so that the connection between the connecting portion 11 and other parts of the FPC1 on the first side and / or the second side can be disconnected. In this way, the possibility of the connecting portion 11 being torn by other parts of the FPC1 can be reduced, so that the possibility of the disconnection between the connecting portion 11 and the connecting piece 2 can be reduced, and further the possibility of the disconnection between the single cell and the BMS can be reduced.

[0046] Among them, the connecting piece 2 is made of a metal such as copper or nickel, and the connecting row 3 is made of a metal such as copper or nickel.

[0047] Since the connecting piece 2 and the connecting row 3 are entirely made of metal, the connecting piece 2 and the connecting row 3 can be connected by laser welding to improve the connection strength between the connecting piece 2 and the connecting row 3. In contrast, since the structural strength of the FPC1 is relatively fragile, in order to avoid damaging the FPC1 during the connection between the connecting piece 2 and the connecting portion 11, the connecting piece 2 and the connecting portion 11 can be connected by soldering. However, this will result in a relatively low connection strength between the connecting piece 2 and the connecting portion 11. Therefore, the connecting portion 11 and the connecting piece 2 are relatively easy to become loose. In the embodiment of the present disclosure, by providing the first notch 121, the first through hole 131, the second notch 122, and the second through hole 132, the possibility of the connecting portion 11 being torn by other parts of the FPC1 can be reduced, so that the possibility of the disconnection between the connecting portion 11 and the connecting piece 2 can be reduced, and further the possibility of the disconnection between the single cell and the BMS can be reduced.

[0048] Among them, the battery module further includes a bus bar and a connecting wire. The plurality of connecting rows 3 are respectively connected to the plurality of single cells and are all connected to the bus bar. The bus bar transmits the information in the entire battery module to the BMS through the connecting wire.

[0049] In some embodiments, the battery module further includes a third through hole 133 and a fourth through hole 134. The third through hole 133 is located on the side of the first through hole 131 away from the first notch 121, and at least a part of the third through hole 133 extends along a specified direction, and the specified direction is the direction in which the first side approaches or departs from the second side; the fourth through hole 134 is located on the side of the second through hole 132 away from the second notch 122, and at least a part of the fourth through hole 134 extends along the specified direction.

[0050] If the deformation of the single cell is too large, after the connecting rib between the first notch 121 and the first through hole 131 is torn, the connecting rib between the first through hole 131 and the third through hole 133 will also be torn, so as to further weaken the connection between the connecting portion 11 and other parts of the FPC1 on the first side, and reduce the possibility that the connecting portion 11 is torn by other parts of the FPC1 on the first side and the connecting piece 2 is separated. At the same time, since at least part of the second through hole 132 extends along the specified direction, after the connecting rib between the first through hole 131 and the third through hole 133 is torn, the constraint of part of the other parts of the FPC1 on the connecting portion 11 can be released in the direction perpendicular to the first direction, so as to further reduce the possibility that the connecting portion 11 is torn by other parts of the FPC1.

[0051] Similarly, if the deformation of the single cell is too large, after the connecting rib between the second notch 122 and the second through hole 132 is torn, the connecting rib between the second through hole 132 and the fourth through hole 134 will also be torn, so as to further weaken the connection between the connecting portion 11 and other parts of the FPC1 on the second side, and reduce the possibility that the connecting portion 11 is torn by other parts of the FPC1 on the second side and the connecting piece 2 is separated. At the same time, since at least part of the second through hole 132 extends along the specified direction, after the connecting rib between the second through hole 132 and the fourth through hole 134 is torn, the constraint of part of the other parts of the FPC1 on the connecting portion 11 can be released in the direction perpendicular to the first direction, so as to further reduce the possibility that the connecting portion 11 is torn by other parts of the FPC1.

[0052] It can be seen that with such a setting, the present disclosure can reduce the possibility that the connecting portion 11 is torn by other parts of the FPC1 in multiple directions.

[0053] In some embodiments, at least part of the third through hole 133 extends in the direction from the first side away from the second side, and at least part of the fourth through hole 134 extends in the direction from the second side away from the first side.

[0054] Among them, the "at least part of the third through hole 133" mentioned here in "at least part of the third through hole 133 extends in the direction from the first side away from the second side" refers to the "at least part of the third through hole 133" mentioned in "at least part of the third through hole 133 extends along the specified direction" above; similarly, the "at least part of the fourth through hole 134" mentioned here in "at least part of the fourth through hole 134 extends in the direction from the second side away from the first side" refers to the "at least part of the fourth through hole 134" mentioned in "at least part of the fourth through hole 134 extends along the specified direction".

[0055] Among them, when the connecting rib between the first through hole 131 and the third through hole 133 or the connecting rib between the second through hole 132 and the fourth through hole 134 is torn, if the third through hole 133 and the fourth through hole 134 extend in opposite directions, the connection strength between the connecting portion 11 and other parts of the FPC1 in this direction will be too low, so that the part will be torn, and then the possibility of the connecting portion 11 being completely separated from other parts of the FPC1 will be caused, so that the electrical connection between the connecting portion 11 and other parts of the FPC1 will be completely disconnected. Therefore, extending at least part of the third through hole 133 in the direction away from the second side along the first side and extending at least part of the fourth through hole 134 in the direction away from the first side along the second side can reduce the possibility of disconnection between other parts of the FPC1 and the connecting portion 11.

[0056] In some embodiments, a cross-section of an end of the third through hole 133 away from the first through hole 131 is circular.

[0057] In this way, when the connecting rib between the first through hole 131 and the third through hole 133 is torn, even if the FPC1 is torn at the end of the third through hole 133 away from the first through hole 131, since the cross-section of the end of the third through hole 133 away from the first through hole 131 is circular, the stress of the FPC1 in this position can be dispersed, thereby reducing the possibility of the FPC1 being torn at this position, thereby reducing the possibility of the internal circuit structure of the FPC1 being damaged due to excessive tearing of the FPC1.

[0058] In some embodiments, the cross-section of the end of the fourth through hole 134 away from the second through hole 132 is circular.

[0059] In this way, when the connecting rib between the second through hole 132 and the fourth through hole 134 is torn, even if the FPC1 is torn at the end of the fourth through hole 134 away from the second through hole 132, since the cross-section of the end of the fourth through hole 134 away from the second through hole 132 is circular, the stress of the FPC1 in this position can be dispersed, thereby reducing the possibility of the FPC1 being torn at this position, thereby reducing the possibility of the internal circuit structure of the FPC1 being damaged due to excessive tearing of the FPC1.

[0060] In some embodiments, the distance between the first notch 121 and the first through hole 131 is smaller than the distance between the first through hole 131 and the third through hole 133 .

[0061] Thus, if the deformation of the single cell is small, the connecting ribs between the first notch 121 and the first through hole 131 and the connecting ribs between the first through hole 131 and the third through hole 133 will not be torn; as the deformation of the single cell gradually increases, the connecting ribs between the first through hole 131 and the third through hole 133 may be torn, and the connecting rib structure between the first through hole 131 and the third through hole 133 has a high strength and can remain intact before the deformation of the single cell reaches a certain degree; as the deformation of the single cell increases to a certain degree, the connecting ribs between the first through hole 131 and the third through hole 133 and the connecting ribs between the first through hole 131 and the third through hole 133 will both be torn. Thus, with such a setting, it is possible to perform multi-stage buffering on other parts of the FPC1 and the connecting portion 11 when the battery is deformed, thereby being able to ensure the integrity of the FPC1 as much as possible.

[0062] In some embodiments, the distance between the second notch 122 and the second through hole 132 is less than the distance between the second through hole 132 and the fourth through hole 134.

[0063] Similar to the above description, with such a setting, it is possible to perform multi-stage buffering on other parts of the FPC1 and the connecting portion 11 when the battery is deformed, thereby being able to ensure the integrity of the FPC1 as much as possible.

[0064] In some embodiments, the distance between the first notch 121 and the first through hole 131 is 0.2 to 0.5 times the distance between the first through hole 131 and the third through hole 133.

[0065] Among them, if the distance between the first notch 121 and the first through hole 131 is less than 0.2 times the distance between the first through hole 131 and the third through hole 133, the strength of the connecting rib between the first notch 121 and the first through hole 131 is too low, and it will be torn even when the deformation of the single cell is small, which will result in a poor multi-stage buffering effect; if the distance between the first notch 121 and the first through hole 131 is greater than 0.2 times the distance between the first through hole 131 and the third through hole 133, the strength of the connecting rib between the first notch 121 and the first through hole 131 is too high, and when it is torn, the deformation of the single cell is relatively close to the above-mentioned certain degree, which will also result in a poor multi-stage buffering effect. Thus, setting the distance between the first notch 121 and the first through hole 131 to 0.2 to 0.5 times the distance between the first through hole 131 and the third through hole 133 can effectively ensure the multi-stage buffering effect achieved by the connecting rib between the first notch 121 and the first through hole 131 and the connecting rib between the first through hole 131 and the third through hole 133.

[0066] Optionally, the distance between the first notch 121 and the first through hole 131 is 0.3 times the distance between the first through hole 131 and the third through hole 133.

[0067] In some embodiments, the distance between the second notch 122 and the second through hole 132 is 0.2 to 0.5 times the distance between the second through hole 132 and the fourth through hole 134.

[0068] Similar to the above description, setting the distance between the second notch 122 and the second through hole 132 to be 0.2 to 0.5 times the distance between the second through hole 132 and the fourth through hole 134 can effectively ensure the multi-stage buffering effect achieved by the connecting ribs between the second notch 122 and the second through hole 132 and the connecting ribs between the second through hole 132 and the fourth through hole 134.

[0069] In some embodiments, as shown in Figure 3 、 Figure 4 , the FPC 1 has a first wire 141, a second wire 142, and a third wire 143. The first wire 141, the second wire 142, and the third wire 143 are all used to connect the connecting piece 2 and the single cell. At least part of the first wire 141 extends toward the first side and is partially located between the first through hole 131 and the third through hole 133; at least part of the second wire 142 extends toward the second side and is partially located between the second through hole 132 and the fourth through hole 134; the third wire 143 extends toward the third side of the connecting portion 11, and the third side is a side adjacent to both the first side and the second side.

[0070] If the connecting ribs between the first through hole 131 and the third through hole 133 and the connecting ribs between the second through hole 132 and the fourth through hole 134 are both torn, and the connection position between the third side of the connecting portion 11 and other parts of the FPC 1 is not torn, then the first wire 141 and the second wire 142 are disconnected, and the third wire 143 is not disconnected. At this time, the connecting piece 2 can still remain connected to the single cell.

[0071] If the connecting ribs between the first through hole 131 and the third through hole 133 and the connection position between the third side of the connecting portion 11 and other parts of the FPC 1 are both torn, and the connecting ribs between the second through hole 132 and the fourth through hole 134 are not torn, then the first wire 141 and the third wire 143 are disconnected, and the second wire 142 is not disconnected. At this time, the connecting piece 2 can still remain connected to the single cell. If the connecting ribs between the second through hole 132 and the fourth through hole 134 and the connection position between the third side of the connecting portion 11 and other parts of the FPC 1 are both torn, and the connecting ribs between the first through hole 131 and the third through hole 133 are not torn, then the second wire 142 and the third wire 143 are disconnected, and the first wire 141 is not disconnected. At this time, the connecting piece 2 can still remain connected to the single cell.

[0072] That is to say, as long as one of the connecting ribs between the first through hole 131 and the third through hole 133, the connecting ribs between the second through hole 132 and the fourth through hole 134, and the connecting part 11 at the third side of the connecting part 11 between the FPC1 and other parts of the FPC1 is not torn, the connecting piece 2 can still be connected to the single battery, thereby avoiding the possibility of the disconnection between the single battery and the BMS when the single battery is deformed.

[0073] In some embodiments, the FPC1 further has a fourth wire 144, and the fourth wire 144 connects the first wire 141, the second wire 142, and the third wire 143 and is used to connect to the single battery.

[0074] In this way, the fourth wire 144 can gather the first wire 141, the second wire 142, and the third wire 143 to avoid the possibility that the first wire 141, the second wire 142, and the third wire 143 are respectively connected to the internal circuit structure of the FPC1, resulting in the redundancy of the internal lines of the FPC1, and can avoid the excessive length of the first wire 141, the second wire 142, and the third wire 143, thereby reducing the cost of the FPC1.

[0075] In some embodiments, the FPC1 further has a fuse 15, and the fuse 15 is located between the fourth wire 144 and the single battery.

[0076] Among them, since the fourth wire 144 connects the first wire 141, the second wire 142, and the third wire 143, the current flowing through the fourth wire 144 is relatively large. By setting the fuse 15, the circuit can be disconnected in time when the current in the fourth wire 144 is too large to ensure the safety of the battery module during use.

[0077] In some embodiments, the connecting part 11 has a vent hole 111, and the vent hole 111 communicates with the connecting piece 2.

[0078] Among them, the vent hole 111 is mainly used to ventilate the connecting part 11 when the connecting piece 2 is connected to the connecting part 11 to ensure the stability of the air pressure at this position of the connecting piece 2, so as to ensure that the solder can be evenly arranged between the connecting part 11 and the connecting piece 2.

[0079] Based on the same concept, the embodiments of the present disclosure also provide a vehicle, and the vehicle includes the battery module provided above.

[0080] The embodiments of the present disclosure do not limit the types of the electric vehicle. For example, the electric vehicle can be, for example but not limited to, a BEV (Battery Electric Vehicle, pure electric vehicle), a PHEV (Plug-in Hybrid Electric Vehicle, plug-in hybrid electric vehicle), or an HEV (Hybrid Electric Vehicle, hybrid electric vehicle).

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or their combinations.

[0082] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0083] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present disclosure; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0084] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways, and corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0085] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the scope of protection of the present disclosure.

[0086] The above are only the preferred embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A battery module, characterized in that: The battery module comprises a single battery, an FPC (1), a connecting sheet (2) and a connecting bar (3); The FPC (1) is fixed to the surface of the single cell and is electrically connected to the single cell. The FPC (1) comprises a connecting portion (11), a first notch (121), a second notch (122), a first through hole (131) and a second through hole (132). The first notch (121) and the first through hole (131) are located on a first side of the connecting portion (11). The first notch (121) is located on an edge of the FPC (1). The second notch (122) and the second through hole (132) are located on a second side of the connecting portion (11). The second notch (122) is located on the edge of the FPC (1). The second side is a side opposite to the first side. The two ends of the connecting piece (2) are respectively fixedly connected to the connecting portion (11) and the connecting row (3).

2. The battery module according to claim 1, characterized in that: The battery module further comprises a third through hole (133) and a fourth through hole (134); The third through hole (133) is located on a side of the first through hole (131) away from the first notch (121), and at least a portion of the third through hole (133) extends along a specified direction, wherein the specified direction is a direction in which the first side approaches or deviates from the second side; The fourth through hole (134) is located on a side of the second through hole (132) away from the second notch (122), and at least a portion of the fourth through hole (134) extends along a specified direction.

3. The battery module according to claim 2, characterized in that: At least a portion of the third through hole (133) extends in a direction from the first side away from the second side, and at least a portion of the fourth through hole (134) extends in a direction from the second side away from the first side.

4. The battery module according to claim 2, characterized in that: The cross section of the end of the third through hole (133) away from the first through hole (131) is circular; and / or, The cross section of the end of the fourth through hole (134) away from the second through hole (132) is circular.

5. The battery module according to claim 2, characterized in that: The distance between the first notch (121) and the first through hole (131) is smaller than the distance between the first through hole (131) and the third through hole (133), and the distance between the second notch (122) and the second through hole (132) is smaller than the distance between the second through hole (132) and the fourth through hole (134).

6. The battery module according to claim 5, characterized in that: The distance between the first notch (121) and the first through hole (131) is 0.2 to 0.5 times the distance between the first through hole (131) and the third through hole (133); and / or, The distance between the second notch (122) and the second through hole (132) is 0.2 to 0.5 times the distance between the second through hole (132) and the fourth through hole (134).

7. The battery module according to claim 2, characterized in that: The FPC (1) comprises a first conductive wire (141), a second conductive wire (142) and a third conductive wire (143); the first conductive wire (141), the second conductive wire (142) and the third conductive wire (143) are all used to connect the connecting piece (2) and the single battery; at least part of the first conductive wire (141) extends toward the first side and is partially located between the first through hole (131) and the third through hole (133); at least part of the second conductive wire (142) extends toward the second side and is partially located between the second through hole (132) and the fourth through hole (134); the third conductive wire (143) extends toward a third side of the connecting portion (11); the third side is a side adjacent to both the first side and the second side.

8. The battery module according to claim 7, characterized in that: The FPC (1) further comprises a fourth wire (144), wherein the fourth wire (144) connects the first wire (141), the second wire (142) and the third wire (143), and is used to be connected to the single battery.

9. The battery module according to claim 8, characterized in that: The FPC (1) further comprises a fuse (15), wherein the fuse (15) is located between the fourth wire (144) and the single battery.

10. A vehicle, characterized in that: The vehicle comprises the battery module according to any one of claims 1-9.

Images