Battery module

1. A battery module, comprising:

a plurality of mono-batteries arranged side by side;

two end plates positioned at two opposite ends of the plurality of mono-batteries in an arrangement direction of the plurality of mono-batteries respectively;

two side plates positioned at a front side and a rear side of the plurality of mono-batteries respectively and securely connected to the two end plates to form a frame;

a bottom plate positioned under the plurality of mono-batteries and securely connected to the two end plates and the two side plates;

a plurality of insulating spacers provided on each side plate, each insulating spacer extending in an up-down direction, and the two adjacent insulating spacers on each side plate receiving one side of one corresponding mono-battery in a front-rear direction, so that the two adjacent mono-batteries being spaced apart from each other by the two insulating spacers which are respectively provided on the two side plates, and each end plate and the corresponding mono-battery being spaced apart from each other by the two insulating spacers which are respectively provided on the two side plate; and

a plurality of insulating bonding materials, each insulating bonding material being provided between the two adjacent insulating spacers on each side plate, so as to bond one side surface of one corresponding mono-battery in the front-rear direction.

2. The battery module according to claim 1 , wherein

each end plate is provided with through-holes which extend in the up-down direction;

both ends of the bottom plate in the arrangement direction of the plurality of mono-batteries are provided with corresponding penetrating holes;

a plurality of battery modules are connected together by screws which each pass through the through-hole of corresponding end plate and the penetrating hole of the bottom plate of each battery module, so as to form a battery pack.

3. The battery module according to claim 1 , wherein

each side plate is provided with a plurality of positioning holes;

each insulating spacer has a protrusion;

the protrusion of each insulating spacer is inserted and fixed to the positioning hole of the side plate, so that each insulating spacer is fixed to the corresponding side plate.

4. The battery module according to claim 3 , wherein each protrusion of each insulating spacer is fixed to one positioning hole of the side plate by hot riveting.

5. The battery module according to claim 1 , wherein each side plate and the plurality of insulating spacers provided on each side plate are integrally formed.

6. The battery module according to claim 1 , wherein the insulating bonding material provided between the two adjacent insulating spacers does not extend beyond the two adjacent insulating spacers in the up-down direction.

7. The battery module according to claim 1 , wherein the insulating bonding material provided between the two adjacent insulating spacers extends beyond the two adjacent insulating spacers in the up-down direction.

8. The battery module according to claim 1 , wherein each side plate may have a bottom portion which is bent and extends to under the plurality of mono-batteries.

9. The battery module according to claim 8 , wherein the insulating bonding material provided between the two adjacent insulating spacers further extends onto the bent bottom portion of the side plate and is bonded to the corresponding one mono-battery from under the corresponding one mono-battery.

10. The battery module according to claim 1 , wherein each end plate, each side plate and the bottom plate are metal plates respectively.

11. The battery module according to claim 2 , wherein each end plate, each side plate and the bottom plate are metal plates respectively.