CN217768526U

CN217768526U - Battery module

Info

Publication number: CN217768526U
Application number: CN202220777673.8U
Authority: CN
Inventors: 李振华; 朱浩浩; 王平
Original assignee: Soundon New Energy Technology Co Ltd
Current assignee: Soundon New Energy Technology Co Ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-11-08
Anticipated expiration: 2032-04-01

Abstract

The utility model discloses a battery module, wherein, the battery module comprises a module outer frame and an electric core component; the module outer frame comprises a first end plate, a second end plate and a frame body, and the frame body, the first end plate and the second end plate are encircled to form a battery cell accommodating cavity; at least one surface of the outer surface of the frame body is provided with a heating film, and the contact surface of the heating film and the frame body is provided with a radiation layer; the electric core subassembly includes a plurality of soft-packaged electrical core, and is a plurality of soft-packaged electrical core arranges side by side at the interval in proper order in electric core holding intracavity. The utility model discloses simple structure, convenient to use not only can realize the quick even heating to electric core subassembly, can avoid soft-packaged electrical core to lead to electric core life-span to reduce because of local high temperature simultaneously.

Description

Battery module

Technical Field

The utility model relates to a laminate polymer battery technical field especially relates to a battery module.

Background

In the application of the new energy battery, the service temperature of the battery is a key parameter for the use of the battery module. Under a low-temperature environment, the concentration difference of the electrolyte becomes large, the polarization is enhanced, the internal resistance of the battery is increased, the charge and discharge capacity expressed by the single battery cell is remarkably reduced, and the capacity of the battery is difficult to normally exert. In order to avoid the influence of temperature on the performance of the battery, the battery core is often heated in a low-temperature environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery module, this battery module aims at solving current laminate polymer battery module heating efficiency low to and the inhomogeneous problem of heating temperature.

In order to achieve the above object, the utility model provides a battery module, wherein, battery module includes: the module outer frame and the electric core assembly;

the module outer frame comprises a first end plate, a second end plate and a frame body, and the frame body, the first end plate and the second end plate are encircled to form a battery cell accommodating cavity; at least one surface of the outer surface of the frame body is provided with a heating film, and the contact surface of the heating film and the frame body is provided with a radiation layer;

the electric core subassembly includes a plurality of soft-packaged electric core, and is a plurality of soft-packaged electric core arranges side by side at the interval in proper order in electric core holding intracavity.

Further, the soft-packaged battery cell is fixedly connected with the contact surface of the frame body through heat conducting glue.

Further, the heating film is arranged on the outer surface of the contact surface of the frame body and the electric core assembly.

Further, it is equipped with the heat preservation cotton to press from both sides between the adjacent soft packet of electricity core.

Furthermore, the frame body is a hollow rectangular shell with openings at two ends.

Further, the electric core accommodating cavity is matched with the electric core assembly.

Further, the heating film is a silica gel heating film.

Further, the radiation layer is made of radiation materials which are beneficial to heat transfer.

Further, the first end plate and the second end plate are detachably connected with the frame body.

In the above technical solution of the present invention, the battery module includes a module outer frame and a battery module assembly; the module outer frame comprises a first end plate, a second end plate and a frame body, and the frame body, the first end plate and the second end plate are encircled to form a battery cell accommodating cavity; at least one surface of the outer surface of the frame body is provided with a heating film, and the contact surface of the heating film and the frame body is provided with a radiation layer; the electric core subassembly includes a plurality of soft-packaged electric core, and is a plurality of soft-packaged electric core arranges side by side at the interval in proper order in electric core holding intracavity. The utility model discloses simple structure through hugging closely the setting at the framework surface and heating the membrane to and the radiation layer that sets up on the heating membrane, realize the even heating to the inside electric core subassembly of framework, fast, efficient, not only can realize the even heating to electric core subassembly, can avoid soft-packaged electric core to lead to electric core life-span to reduce because of local high temperature simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an assembly structure of a cell assembly in a battery module according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a single soft-packaged electrical core according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a frame body according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a heating film according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	First end plate	2	Second end plate
3	Frame body	4	Heating film
				5	Electricity core subassembly	6	Soft-packaged battery cell
7	Module outer frame	8	Radiation layer

The purpose of the present invention, its functional features and advantages will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper and lower … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

Moreover, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory or impossible to realize, the combination of the technical solutions should not exist, and the combination is not within the protection scope of the present invention.

Referring to fig. 1, according to an aspect of the present invention, the present invention provides a battery module, wherein the battery module includes: a module outer frame 7 and a cell assembly 5;

the module outer frame 7 comprises a first end plate 1, a second end plate 2 and a frame body 3, and the frame body 3, the first end plate 1 and the second end plate 2 are enclosed to form a battery cell accommodating cavity; at least one surface of the outer surface of the frame body 3 is provided with a heating film 4, and the contact surface of the heating film 4 and the frame body is provided with a radiation layer 8;

the battery pack assembly 5 comprises a plurality of soft-packaged battery cores 6, and is a plurality of the soft-packaged battery cores 6 are arranged side by side at intervals in sequence in the battery core accommodating cavity.

Specifically, in this embodiment, the first end plate 1 and the second end plate 2 are detachably connected to the frame body 3, the first end plate 1, the second end plate 2 and the frame body 3 are enclosed to form a cell accommodating cavity, the frame body 3 is a hollow rectangular casing with openings at two ends, the cell accommodating cavity is adapted to the cell assembly 5, the cell assembly 5 includes a plurality of soft-package cells 6, the adjacent soft-package cells 6 are sequentially arranged in the cell accommodating cavity at intervals side by side, and contact surfaces of the soft-package cells 6 and the frame body 3 are fixedly connected through a heat-conducting adhesive; it is a plurality of the clearance that forms between the soft-packaged electrical core 6 is filled and is equipped with the heat preservation cotton, makes laminating each other between the soft-packaged electrical core 6 through the heat preservation cotton, is favorable to thermal transmission, is favorable to the improvement of heating effect, simultaneously, is a plurality of press from both sides between the soft-packaged electrical core 6 and establish the heat preservation cotton, can be to its buffering of electric core, absorbing effect.

Specifically, in this embodiment, the surface of framework 3 simultaneously is equipped with heating film 4 at least, what heating film 4 adopted is that silica gel heating film 4, in this scheme, heating film 4 is located the framework with the surface of 5 contact surfaces of electric core subassembly, promptly framework 3 with the upper and lower surface of 5 contact surfaces of electric core subassembly is equipped with silica gel heating film 4, silica gel heating film 4 compress tightly the laminating in the upper and lower surface of framework 3, the heat that silica gel heating film 4 sent passes through framework 3 and heat-conducting glue, transmits extremely electric core subassembly 5 realizes the contact heating to electric core side, and heat transfer speed is fast, and heat transfer efficiency is high, can avoid electric core subassembly 5 local high temperature to lead to electric core life to reducing simultaneously.

Specifically, in this embodiment, a radiation layer 8 is disposed on a contact surface of the heating film 4 and the frame 3, and the radiation layer 8 is made of a radiation material that is favorable for heat transfer; through the lower surface direct spraying of heating film 4 radiation layer 8 can effectively radiate the produced heat of silica gel heating film 4, radiation layer 8's thermal radiation penetrable object surface to the high-efficient heating is a plurality of soft-packaged electrical core 6. The radiation layer 8 is made of radiation materials beneficial to heat transfer, and has the characteristics of uniform heat transfer temperature, light weight, good heat conduction and high reliability.

Specifically, in this embodiment, the at least one side of the surface of framework 3 sets up silica gel heating film 4 and is in heating film 4 with the contact surface of framework 3 is equipped with radiation layer 8, when the high-power heating of module, the temperature of silica gel heating film 4 risees rapidly, and its heat is through frame from top and bottom transmission to heat-conducting glue, heat-conducting glue with heat transmission extremely soft-packaged electrical core 6, through silica gel heating film 4 with 5 indirect contacts of electrical core subassembly, realize the contact heating to the electrical core side, simultaneously, combine radiation layer 8 is right the heat radiation of silica gel heating film 4 heats through heat radiation to the electricity core inside, not only can prevent 5 local high temperatures of electrical core subassembly, can be rapidly even realization simultaneously to the heating of electrical core subassembly 5, resume the charge-discharge performance of electrical core subassembly 5. Compared with the existing direct heating mode, the temperature of the soft-package battery cell 6 can be raised to the normal temperature only after more than half an hour in a low-temperature environment, and meanwhile, the service life of the battery cell or other safety problems can be influenced due to uneven heating of the soft-package battery cell 6; this application more can effectively avoid the problem that 6 heating inequality of laminate polymer core and laminate polymer battery module heating efficiency are low.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. The battery module is characterized by comprising a module outer frame and an electric core assembly;

the module outer frame comprises a first end plate, a second end plate and a frame body, and the frame body, the first end plate and the second end plate are arranged in a surrounding mode to form a battery cell accommodating cavity; at least one surface of the outer surface of the frame body is provided with a heating film, and the contact surface of the heating film and the frame body is provided with a radiation layer;

the electric core subassembly includes a plurality of soft-packaged electrical core, and is a plurality of soft-packaged electrical core arranges side by side at the interval in proper order in electric core holding intracavity.

2. The battery module according to claim 1, wherein the contact surface of the soft package battery cell and the frame body is fixedly connected through a heat-conducting adhesive.

3. The battery module according to claim 2, wherein the heating film is disposed on an outer surface of a contact surface of the frame body and the electric core assembly.

4. The battery module according to claim 2, characterized in that heat preservation cotton is clamped between the adjacent soft package battery cores.

5. The battery module as set forth in claim 3, wherein the frame is a hollow rectangular case having openings at both ends.

6. The battery module according to claim 1, wherein the cell accommodating cavity is adapted to the cell assembly.

7. The battery module according to claim 3, wherein the heating film is a silicone heating film.

8. The battery module according to claim 1, wherein the radiation layer is made of a radiation material for facilitating heat transfer.

9. The battery module as set forth in claim 1, wherein the first end plate and the second end plate are detachably connected to the frame body.