CN210897471U

CN210897471U - Battery module casing and battery module

Info

Publication number: CN210897471U
Application number: CN201922361780.3U
Authority: CN
Inventors: 沙建荣; 刘献华
Original assignee: Farasis Energy Ganzhou Co Ltd; Farasis Energy Zhenjiang Co Ltd
Current assignee: Farasis Energy Ganzhou Co Ltd; Farasis Energy Zhenjiang Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-06-30
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a battery technology field specifically relates to a battery module casing and battery module. The battery module shell comprises a shell body, a cavity for installing the electric core group (6) is formed in the shell body, and the end face, close to the lug of the electric core group (6), of the shell body is provided with a glue filling opening (5) for filling glue. The utility model discloses a battery module casing can guarantee the moisture resistance of devices such as module utmost point ear and reduce extravagantly.

Description

Battery module casing and battery module

Technical Field

The utility model relates to a battery technology field specifically relates to a battery module casing and battery module.

Background

At present unilateral utmost point ear soft-packaged electrical core side heating module is all from being located a plurality of encapsulating mouths of module bottom (devices such as utmost point ear are located the module top) and will glue through the rubber tube and pour into inside the module to will glue from the module bottom through pressure and irritate to the module top, the inside air of module passes through a plurality of exhaust hole discharges at module top. Because the module is vertically placed on the encapsulating vehicle, the bottom of the module faces downwards, and the top of the module faces upwards. During glue pouring operation, workers need to bend to the position below the glue pouring vehicle for inserting and pulling the rubber pipes, and the operation difficulty is high. And because the connector is many, the pipe is long, a large amount of glue remains in the rubber tube, cause glue and waste of rubber tube, waste cost. On the other hand, as the glue is fed from the bottom of the module through a plurality of glue filling ports, the glue feeding speed of each pipe is inconsistent, and the glue amount observed in the vent holes at the top of the module is inconsistent, some positions at the top of the module are not glued, so that devices or lugs on the sampling PCB cannot be covered, and the moisture resistance cannot be ensured; also, glue is accumulated at some positions, which results in excessive glue and waste of cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the encapsulating mouth encapsulating from the module bottom that exists among the prior art and leading to the device such as utmost point ear at module top easily to glue the volume and distribute unevenly, lead to the not good or extravagant technical problem of humidity resistance, provide a battery module casing and battery module, this module casing and module can guarantee the humidity resistance of device such as module utmost point ear and reduce extravagantly.

In order to achieve the above object, the utility model provides an aspect provides a battery module casing, it includes the shell body, this internal cavity that is used for installing the electric core group that is formed with of shell, the shell body is close to be provided with the encapsulating mouth that is used for the encapsulating on the terminal surface of the utmost point ear of electric core group.

Preferably, the shell body sets up to be used for installing the unilateral electric core group who goes out utmost point ear, the shell body includes top cap, bottom plate, first end plate, second end plate, front bezel and back plate, the top cap is close to the utmost point ear setting of electric core group, the bottom plate is kept away from utmost point ear setting, the front bezel with the back plate is close to respectively outmost two electric core settings in the electric core group, first end plate with the second end plate set up respectively in two tip of electric core group, the encapsulating mouth set up in on the top cap.

Preferably, the glue filling port is one, and the glue filling port is arranged at a position of the top cover close to the first end plate.

Preferably, the glue filling opening is arranged in the middle of the top cover in the width direction.

Preferably, the case body is provided with an exhaust hole for exhausting air.

Preferably, the exhaust hole is provided on the second end plate.

Preferably, the number of the exhaust holes is one, and the exhaust holes are arranged on the second end plate close to the bottom plate.

Preferably, the exhaust hole is formed in the bottom plate at a position close to the second end plate.

Preferably, the shell body is provided with an electric core group with two side lugs, the shell body comprises a top cover and a bottom plate which are respectively close to the two side lugs of the electric core group, and the top cover and the bottom plate are both provided with glue filling ports.

The utility model discloses the second aspect provides a battery module, it includes as above battery module casing and set up in a plurality of electric core groups in the cavity.

According to the technical scheme, the glue filling port is arranged corresponding to the devices such as the lugs of the electric core group, so that the glue filling port and the devices such as the lugs of the electric core group can be arranged upwards during glue filling, and in the process of cementing, the side surface and the bottom are naturally infiltrated through a flow channel formed by a gap between the electric core and the electric core through the flowing capacity and the gravity action of glue per se, so that the structural strength is not influenced; meanwhile, the device such as the lug at the top can be well soaked, and the moisture resistance is improved; the glue at the top of the module can be prevented from being accumulated, and the waste is reduced.

Drawings

Fig. 1 is a cross-sectional view of one embodiment of a battery module according to the present invention;

fig. 2 is a top view of an embodiment of a battery module housing of the present invention;

fig. 3 is a front view of the battery module case shown in fig. 2;

fig. 4 is a side view of the battery module case shown in fig. 2.

Description of the reference numerals

1-a top cover; 2-a bottom plate; 3-a first end plate; 4-a second end plate; 5-glue pouring opening; 6-electric core group; 7-front plate; 8-air vent.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the terms of orientation such as "upper, lower, left, right" and the like are generally used in accordance with the orientation shown in the corresponding drawings.

As shown in fig. 2-4, an aspect of the present invention provides a battery module casing, the battery module casing includes a shell body, a cavity for installing the electric core assembly 6 is formed in the shell body, the shell body is close to the glue filling opening 5 for filling glue is provided on the terminal surface of the electrode ear of the electric core assembly 6. The battery cell group 6 is composed of a plurality of stacked battery cells. The electric core group 6 can be a single-side lug outlet or a double-side lug outlet.

Because the glue filling port 5 and the polar lug and other devices of the electric core group 6 are correspondingly arranged, the glue filling port 5 and the polar lug and other devices of the electric core group 6 can be upwards arranged (namely, a top glue filling mode is adopted, and meanwhile, the polar lug and other devices are positioned at the top) during glue filling, and in the glue solidification process, a flow channel formed by a gap between the electric core and the electric core can form natural infiltration of the side surface and the bottom through the flowing capacity and the gravity action of glue, so that the structural strength can be ensured not to be influenced; meanwhile, the device such as the lug at the top can be well soaked, and the moisture resistance is improved; the glue at the top of the module can be prevented from being accumulated, and the waste is reduced. Due to the design of glue pouring at the top, the rubber tube can be conveniently inserted and connected, and the working efficiency is improved.

As an embodiment, the shell body sets up to be used for installing unilateral electric core group 6 who goes out utmost point ear, the shell body includes top cap 1, bottom plate 2, first end plate 3, second end plate 4, front bezel 7 and back plate, top cap 1 is close to the utmost point ear setting of electric core group 6, bottom plate 2 is kept away from utmost point ear setting, front bezel 7 with the back plate is close to respectively two outermost electric cores in electric core group 6 set up, first end plate 3 with second end plate 4 set up respectively in two tip of electric core group 6, encapsulating mouth 5 set up in on top cap 1. Namely, the glue filling port 5 is arranged corresponding to the tab and other devices. As shown in fig. 1, the top cover 1 is located at the upper side, the bottom plate 2 is located at the lower side, the first end plate 3 is located at the left side, and the second end plate 4 is located at the right side. The electric core group 6 is set as five groups, and the first end plate 3 and the second end plate 4 are arranged at two ends of the five groups of electric core group 6 along the length direction. During the encapsulating, glue gets into the inside of battery module from encapsulating mouth 5 and flows to the distal end, has guaranteed that upper portion device and utmost point ear can both obtain better infiltration, can advance gluey volume through control, makes the upper surface of gluing and the bottom contact of PCB board, accomplishes PCB board top and glues fewly or do not have to reduce the volume of gluing. In practical application, no matter how the battery module is placed, the glue filling port 5 is arranged at the position corresponding to the tab and other devices, and the top glue filling mode can be realized.

In one embodiment, the glue filling opening 5 is provided in one, and the glue filling opening 5 is provided at a position of the top cover 1 close to the first end plate 3. Because the mode that the battery module can adopt the top encapsulating, glue can realize nature infiltration through self flow property and action of gravity, consequently can set up the quantity of encapsulating mouth 5 less to make the quantity of rubber tube less, the inside remaining glue volume of rubber tube reduces, has reduced the waste, reduce cost, can also reduce the use amount of plug simultaneously.

In one embodiment, the glue filling opening 5 is disposed in the middle of the top cover 1 in the width direction. Such a design prevents the glue entering from the glue pouring port 5 from flowing in only one side in the width direction of the top cover 1.

In one embodiment, the housing body is provided with an exhaust hole 8 for exhausting air. The design of exhaust hole 8 can make battery module be better at encapsulating in-process exhaust effect. In actual operation, the glue discharged from the air vent 8 can be regarded as a glue filling stopping signal, and the glue filling time can also be determined by timing. When the exhaust hole 8 is not provided, the exhaust can be performed through the gap of the case body itself.

In one embodiment, the exhaust hole 8 is disposed on the second end plate 4.

In one embodiment, the number of the exhaust holes 8 is one, and the exhaust holes 8 are disposed on the second end plate 4 near the bottom plate 2. Such design can cooperate with the encapsulating mouth 5 that sets up in top cap 1 and be close to the position department of first end plate 3, makes glue from the encapsulating mouth 5 entering at left side top, and the air is discharged from the exhaust hole 8 of right side bottom, and is better at encapsulating in-process exhaust effect. Avoid exhaust hole 8 to set up in the position department that is nearer apart from encapsulating mouth 5, the condition of being glued the shutoff very easily.

In one embodiment, the exhaust hole 8 is disposed on the bottom plate 2 near the second end plate 4. Such design can cooperate with the encapsulating mouth 5 that sets up in top cap 1 and be close to the position department of first end plate 3, makes glue from the encapsulating mouth 5 entering at left side top, and the air is discharged from the exhaust hole 8 of right side bottom, and is better at encapsulating in-process exhaust effect. Avoid exhaust hole 8 to set up in the position department that is nearer apart from encapsulating mouth 5, the condition of being glued the shutoff very easily.

As an implementation mode, the shell body is provided with the electric core group 6 used for installing the two-side lug, the shell body comprises a top cover 1 and a bottom plate 2 which are respectively close to the two-side lug of the electric core group 6, and the top cover 1 and the bottom plate 2 are both provided with the glue filling port 5. The design can select a mode of top glue pouring from the corresponding end face with the glue pouring opening 5 according to actual requirements. In practical application, the air can be exhausted through the exhaust holes 8 during glue pouring, and the air can also be exhausted through gaps existing in the shell body.

As shown in fig. 1, the second aspect of the present invention provides a battery module, which includes the battery module casing and a plurality of battery cell packs 6 disposed in the cavity. As shown in FIG. 1, the electric core groups 6 are arranged into five groups, and the five groups of electric core groups 6 are arranged side by side. Each group of the electric core group 6 is composed of a plurality of stacked electric cores.

In actual operation, glue from battery module top cap 1 (plastic part) on lie in the encapsulating mouth 5 entering battery module inside of left end, the air is discharged from the exhaust hole 8 that lies in battery module right side bottom. Glue with the help of the flowing ability of self and the action of gravity of self, through the runner that the clearance between electric core and the electric core formed, glue from encapsulating mouth 5's near-end to the distal end of all directions flow direction encapsulating mouth 5, form the natural infiltration of side and bottom, make inside all having of whole battery module glue and fill, guarantee that structural strength is not influenced, reach the effect of protection components and parts. By the design, the upper device and the electrode lugs of the battery core group can be soaked, and the reliability of the moisture resistance of the battery module is ensured. The top glue filling mode can also reduce the number of glue filling openings 5 and the number of the rubber tubes, so that the residual glue amount in the rubber tubes is less, the waste is reduced, the cost is saved, and the using amount of the rubber plugs can be reduced. Simultaneously, due to the design of glue pouring at the top, the rubber tube is convenient to connect and plug, the operation amount at the bottom of the module is greatly reduced, the operation difficulty of workers is reduced, and the working efficiency is improved. The glue feeding amount can be controlled to enable the upper surface of the glue to extend to the bottom of the PCB, so that less glue or no glue is arranged on the top of the PCB, the using amount of the glue is reduced on the premise of ensuring the structural strength, the cost is saved, and the weight is reduced.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the utility model, the technical scheme of the utility model can be simply modified, for example, the number of the glue filling openings 5 and the exhaust holes 8 can be set to be multiple; the exhaust holes 8 are not arranged, and the exhaust can be carried out only through the gaps of the shell body; it is also possible to arrange the glue filling opening 5 close to the second end plate 4, the air vent 8 close to the first end plate 3, etc. Including any combination of specific features, which is not otherwise described herein, in order to avoid unnecessary repetition. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a battery module casing, its characterized in that, includes the shell body, this internal cavity that is used for installing electric core group (6) that is formed with of shell, the shell body is close to be provided with encapsulating mouth (5) that are used for the encapsulating on the terminal surface of the utmost point ear of electric core group (6).

2. The battery module casing of claim 1, wherein the casing body is provided with an electric core group (6) for installing a single-side tab, the casing body comprises a top cover (1), a bottom plate (2), a first end plate (3), a second end plate (4), a front plate (7) and a rear plate, the top cover (1) is close to the tab of the electric core group (6), the bottom plate (2) is far away from the tab, the front plate (7) and the rear plate are respectively close to two outermost electric core settings in the electric core group (6), the first end plate (3) and the second end plate (4) are respectively arranged at two ends of the electric core group (6), and the glue filling port (5) is arranged on the top cover (1).

3. The battery module housing according to claim 2, wherein the glue filling opening (5) is provided in one piece, and the glue filling opening (5) is provided in the top cover (1) at a position close to the first end plate (3).

4. The battery module housing according to claim 3, wherein the glue filling port (5) is provided at a middle portion in a width direction of the top cover (1).

5. The battery module case according to claim 3, wherein the case body is provided with a vent hole (8) for exhausting air.

6. The battery module case according to claim 5, wherein the vent hole (8) is provided on the second end plate (4).

7. The battery module case according to claim 6, wherein the vent hole (8) is provided in one piece, and the vent hole (8) is provided in the second end plate (4) at a position close to the bottom plate (2).

8. The battery module case according to claim 5, wherein the vent hole (8) is provided at a position of the bottom plate (2) adjacent to the second end plate (4).

9. The battery module shell according to claim 1, wherein the shell body is provided with a cell group (6) with two side tabs, the shell body comprises a top cover (1) and a bottom plate (2) which are respectively arranged close to the two side tabs of the cell group (6), and the top cover (1) and the bottom plate (2) are both provided with the glue filling port (5).

10. A battery module comprising a battery module housing according to any one of claims 1 to 9 and a plurality of battery cell packs (6) disposed in the cavity.