Battery module

1. A battery module, comprising:

battery box elements;

a reinforcing member, which is attached to an end portion of at least two of the battery box elements and is directly connected with the at least two of the battery box elements, wherein the reinforcing member is formed by a metal material;

a collection element and bus bars, wherein the collection element and the bus bars are both connected to the battery box elements;

an end plate, which is arranged on one side of the reinforcing member facing away from the battery box elements;

a side plate, which is arranged on a side portion of the battery box elements, wherein the side portion of the battery box elements is a large surface of the battery box elements; and

an insulating member, which is located between the reinforcing member and the end plate, and covering the end portion of the battery box elements,

wherein when each of the battery box elements is a cuboid as a whole, the battery box elements comprise two large surfaces and four small surfaces, and the end portion of the at least two of the battery box elements is the small surface of the battery box elements,

wherein the reinforcing member comprises two fixing plate segments and a connection plate segment, the two fixing plate segments are respectively connected to the battery box elements, and the end plate and the reinforcing member are independent structures,

wherein the connection plate segment comprises:

a first connection plate segment, wherein both ends of the first connection plate segment are respectively connected to the two fixing plate segments, and the first connection plate segment and the side plate are connected; and

a second connection plate segment, wherein the second connection plate segment is arranged on the first connection plate segment, and is extended toward a direction along which the battery box elements point at the end plate, and the second connection plate segment and the end plate are connected,

wherein the reinforcing member is welded to the side plate through the first connection plate segment,

wherein the reinforcing member is welded to the end plate through the second connection plate segment,

wherein the reinforcing member is engaged with the battery box elements,

wherein the two fixing plate segments are arranged at intervals, and the two fixing plate segments are respectively engaged with the battery box elements,

wherein each of the battery box elements is provided with a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion are arranged at intervals, and the fixing plate segment is engaged between the first positioning portion and the second positioning portion, and

wherein a thickness of the fixing plate segment is less than or equal to a height of the first positioning portion, and less than or equal to a height of the second positioning portion.

2. The battery module according to claim 1 ,

wherein the reinforcing member is formed with an avoiding space, and the avoiding space can avoid the collection element and the bus bars.

3. The battery module according to claim 2 , wherein the avoiding space is formed between the two fixing plate segments.

4. The battery module according to claim 3 , wherein the avoiding space is formed between the two fixing plate segments and the connection plate segment.

5. The battery module according to claim 4 , wherein there are two connection plate segments, and the avoiding space is formed between the two fixing plate segments and the two connection plate segments.

6. The battery module according to claim 5 , wherein the number of the side plates is two, and the two side plates are arranged opposite to each other; the number of the reinforcing members is two, and the two reinforcing members are arranged opposite to each other; the number of the end plates is two, and the two end plates are arranged opposite to each other; and the two side plates, the two reinforcing members, and the two end plates constitute a frame contains and clamps the battery box elements.

7. The battery module according to claim 2 , wherein at least one of the collection element and the bus bars is engaged with the battery box elements.

8. The battery module according to claim 1 , wherein the insulating member is connected to the battery box elements; and

the insulating member is connected to the end plate.

9. The battery module according to claim 8 , wherein the insulating member is engaged with the battery box elements; and

the insulating member is engaged with the end plate.

10. The battery module according to claim 9 , further comprising:

a side plate, which is arranged on a side portion of the battery box elements, wherein the side portion of the battery box elements is a large surface of the battery box elements;

wherein the number of the insulating members is two, and the two insulating members are arranged opposite to each other; the number of the side plate is two, and the two side plates are arranged opposite to each other; the number of the reinforcing member is two, and the two reinforcing members are arranged opposite to each other; the number of the end plate is two, and the two end plates are arranged opposite to each other; and the two side plates, the two reinforcing members, and the two end plates constitute a frame contains and clamps the battery box elements in the battery module.

11. The battery module according to claim 1 , wherein a surface of the reinforcing member is provided with an insulating layer.