CN-224232837-U - Battery module and battery pack

CN224232837UCN 224232837 UCN224232837 UCN 224232837UCN-224232837-U

Abstract

The utility model discloses a battery module and a battery pack, wherein the battery module comprises a battery box and a plurality of electric cores, the inner bottom surface of the battery box is fixedly connected with a plurality of prismatic pipes which are made of high heat conduction materials and face up and down, the upper ends of the prismatic pipes are propped against the inner top surface of the battery box, the bottom surface and the top surface of the battery box are respectively provided with a plurality of through holes which are respectively communicated with the corresponding prismatic pipes, and the side surface of each electric core is fixedly connected to the side surface of the prismatic pipe in a bonding way. According to the utility model, the prismatic tube is arranged in the battery box, the side faces of the battery cells are fixedly connected to the side faces of the prismatic tube in a bonding mode, through holes communicated with the prismatic tube are formed in the bottom face and the top face of the battery box, and heat generated by each battery cell can be transferred to the prismatic tube through the side faces during charging and discharging and then emitted to the outside from the prismatic tube, so that each battery cell can be effectively radiated. Meanwhile, the upper end of the prismatic tube is propped against the inner top surface of the battery box, so that the structural strength of the battery box in the vertical direction can be greatly enhanced, and the compressive capacity of the battery box is improved.

Inventors

WANG KUN
CHEN WEIWEN
RAO HUABING

Assignees

惠州市乐亿通科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250416

Claims (8)

1. A battery module comprises a battery box and a plurality of electric cores and is characterized in that the inner bottom surface of the battery box is fixedly connected with a plurality of prismatic pipes which are made of high heat conduction materials and face upwards and downwards, the upper ends of the prismatic pipes are propped against the inner top surface of the battery box, a plurality of through holes which are respectively communicated with the corresponding prismatic pipes are formed in the bottom surface and the top surface of the battery box, and the side surfaces of each electric core are fixedly connected to the side surfaces of the prismatic pipes in a bonding mode.
2. The battery module of claim 1, wherein the battery case comprises a bottom case and an upper cover, the prismatic tube is welded and fixed on the inner bottom surface of the bottom case, and the upper cover is detachably and fixedly connected to the opening of the bottom case.
3. The battery module of claim 1, wherein the distance between any two adjacent prismatic tubes is the same.
4. The battery module of claim 1, wherein the through holes are identical in shape and size to the prismatic tube in cross section.
5. The battery module of claim 1, wherein the prismatic tube is a regular prismatic tube, and the width of the side surface of the prismatic tube is not smaller than the width of the side surface of the battery cell.
6. A battery module as set forth in claim 1, wherein the outer peripheries of the plurality of cells around each prismatic tube are further pinched with a steel band.
7. A battery pack, which is characterized by comprising at least two battery modules according to any one of claims 1 to 6, wherein locking structures are arranged around the battery box, and at least two battery modules are stacked up and down in an aligned manner and are detachably locked and fixed through the locking structures.
8. The battery pack according to claim 7, wherein the locking structure is a plurality of groups of lugs arranged around the battery box, each group of lugs comprises an upper lug and a lower lug which are respectively close to the top surface and the bottom surface of the battery box, lock holes are formed in the upper lug and the lower lug, the lock hole of the lower lug of the upper battery module is aligned with the lock hole axis of the upper lug of the lower battery module, and screw nuts penetrating through the two lock holes are detachably and fixedly connected.

Description

Battery module and battery pack Technical Field The utility model relates to the field of batteries, in particular to a battery module, and further relates to a battery pack. Background The battery module is widely applied to modern life, in particular to the new energy automobile industry as an electric storage unit. For example, the chinese patent document with the name of waterproof type nickel-metal hydride battery pack, entitled CN222735168U, discloses a conventional common battery module structure, and the main structure includes a housing assembly and nickel-metal hydride batteries disposed in an inner cavity of the housing assembly, where the nickel-metal hydride batteries are arranged in a row by a plurality of electric cores in a sequence, and the arrangement is a conventional common arrangement mode. However, the arrangement mode has poor heat dissipation, so that heat generated during charge and discharge of the middle battery core is not effectively dissipated, the temperature distribution of the whole battery is greatly different, and adverse effects are caused on the aspects of consistency, charge and discharge characteristics, service life and the like of the battery. In addition, the shell component of the battery is poor in structural strength in the vertical direction, structural deformation and even short circuit are easy to occur when the battery is pressed, and certain potential safety hazards exist. Disclosure of utility model In order to solve the defects in the prior art, the utility model provides the battery module with good heat dissipation and high structural strength. The utility model adopts the technical scheme that: The utility model provides a battery module, includes battery box and a plurality of electric core, the interior bottom surface fixedly connected with of battery box is many and be made by high heat conduction material and be about towards prismatic pipe, the upper end of prismatic pipe supports the interior top surface of battery box, a plurality of through-holes that communicate with corresponding prismatic pipe respectively are all seted up to the bottom surface and the top surface of battery box, every the side of electric core is all laminated fixed connection on the side of prismatic pipe. According to the further improved technical scheme, the battery box comprises a bottom box and an upper cover, the prismatic tube is welded and fixed on the inner bottom surface of the bottom box, and the upper cover is detachably and fixedly connected to the opening of the bottom box. According to a further improved technical scheme, the distances between any two adjacent prismatic pipes are the same. In the technical proposal of further improvement, the shape of the through hole and the prismatic tube the cross sections are identical in shape and uniform in size. According to the further improved technical scheme, the prismatic tube is a regular prismatic tube, and the width of the side face of the prismatic tube is not smaller than that of the side face of the battery cell. According to a further improved technical scheme, the peripheries of the plurality of electric cores around each prismatic tube are also banded with steel bands. The battery pack comprises at least two battery modules according to any one of the technical schemes, locking structures are arranged on the periphery of the battery box, and at least two battery modules are stacked in an up-down alignment mode and can be detachably locked and fixed through the locking structures. According to the further improved technical scheme, the locking structure is a plurality of groups of lugs arranged around the battery box, each group of lugs comprises an upper lug and a lower lug which are respectively close to the top surface and the bottom surface of the battery box, lock holes are formed in the upper lug and the lower lug, the lock holes of the lower lugs of the upper battery module are aligned with the lock hole axes of the upper lugs of the lower battery module, and screw nuts penetrating through the two lock holes are detachably and fixedly connected. The battery box has the beneficial effects that the prismatic tube is arranged in the battery box, the side faces of the battery cores are fixedly connected to the side faces of the prismatic tube in a bonding mode, through holes communicated with the prismatic tube are formed in the bottom face and the top face of the battery box, heat generated by each battery core during charging and discharging can be transferred to the prismatic tube through the side faces and then emitted to the outside from the prismatic tube, and therefore each battery core can be effectively radiated. Meanwhile, the upper end of the prismatic tube is propped against the inner top surface of the battery box, so that the structural strength of the battery box in the vertical direction can be greatly enhanced, and the compressive capacity of the battery box is improved. Drawings Fig. 1