CN210535733U

CN210535733U - Battery module and power battery pack thereof

Info

Publication number: CN210535733U
Application number: CN201921794382.4U
Authority: CN
Inventors: 魏艳彬; 李卫华; 李晓磊; 张野
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-05-15
Anticipated expiration: 2029-10-23

Abstract

The utility model relates to a power battery wraps the manufacturing technology field, specifically relate to battery module and power battery wraps thereof, battery module wherein includes group battery (110), and tip on the width direction of group battery is equipped with end plate (120), is equipped with upper cover (140) in the top of group battery, is equipped with protection base (121) on the end plate, and the upper cover includes upper cover body (141), and the side integrated into one piece of upper cover body has protective cover (142), and the protective cover corresponds the setting with protection base and links to each other. The utility model discloses a side integrated into one piece at the upper cover body of battery module has the protective cover, makes the protective cover correspond the setting with the protection base that sets up on the end plate and links to each other, simple structure, compactness, dismantles convenient and low cost.

Description

Battery module and power battery pack thereof

Technical Field

The utility model relates to a power battery wraps the manufacturing technology field, specifically relates to battery module and power battery wraps thereof.

Background

The power battery pack provides an energy source for the electric automobile and is a very important system. The existing power battery pack is generally composed of a plurality of battery modules connected in series, wherein the output pole position of the battery module belongs to a high-voltage output pole, and the protection of the position is particularly important for the property and the service life of the power battery pack. Among the current battery module, the protection base and the protective cover of output utmost point position are two spare parts that set up respectively, connect through fixed knot structure again between two spare parts and fix together, and the mode of this kind of components of a whole that can function independently setting up and fixed connection that has now usually can lead to the connection between protection base and the protective cover fixed inseparable or in case difficult dismantlement again after the fastening assembly, not only can not play sufficient guard action to the output utmost point position of battery module, but also cause inconvenience for the change of battery module.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the components of a whole that can function independently structure that prior art exists protective effect is poor, dismantle inconvenient problem, provide battery module and power battery package, have the protective cover through the side integrated into one piece at the upper cover body of battery module, make the protective cover correspond the setting with the protection base that sets up on the end plate and link to each other, simple structure, compactness, dismantle convenient and low cost.

In order to achieve the above object, an aspect of the present invention provides a battery module, including the battery pack the ascending tip of width direction of battery pack is equipped with the end plate the top of battery pack is equipped with the upper cover, be equipped with the protection base on the end plate, the upper cover includes the upper cover body, the side integrated into one piece of upper cover body have be used for with the protection base corresponds the setting and continuous protective cover.

Preferably, the protective cover comprises a transition part formed by convexly bending along the side edge of the upper cover body, a cover body extending from the transition part and connecting parts arranged at two sides of the cover body; the protective base comprises an outer shell, and the top of the outer shell is provided with a first opening; the connecting part is used for being connected with the protection base and shielding the first opening.

Preferably, the connecting portion is a U-shaped member and includes a bottom wall, and a first side wall and a second side wall respectively extending and bending on two sides of the bottom wall, the first side wall is formed by extending and bending the cover body, and the top of the second side wall extends and bends to be a lap joint portion lap-jointed on the edge of the first opening of the protection base.

Preferably, a second opening is formed in the front side of the outer shell; the cover body is bent along one side far away from the transition part to form a baffle part; the protective cover is connected with the protective base and shields at least one part of the second opening.

Preferably, the end of the baffle portion has a rounded corner.

Preferably, a clamping hole is formed in the outer shell of the protection base; the outer surface of the second side wall of the connecting part is correspondingly provided with a clamping hook; the clamping hook is embedded in the clamping hole to enable the protective cover to be fixedly connected with the protective base.

Preferably, the first side wall and the bottom wall of the connecting part and the second side wall and the bottom wall of the connecting part are in arc transition.

Preferably, a bus bar support is arranged below the upper cover, a clamping groove is arranged on the peripheral edge of one of the upper cover and the bus bar support, and a buckle is correspondingly arranged on the peripheral edge of the other one of the bus bar support and the upper cover; the upper cover and the bus bar support are buckled through the buckles and are fixedly connected with each other in the clamping grooves.

Preferably, the clamping grooves and the buckles are arranged on the periphery of the upper cover or the bus bar support at equal intervals.

The utility model discloses the second aspect provides a power battery package, power battery package includes as above the battery module.

Through the technical scheme, the utility model discloses a side integrated into one piece at the upper cover body of battery module has the protective cover, makes the protective cover correspond with the protection base that sets up on the end plate and sets up and link to each other, and simple structure, compactness dismantle convenient and low cost.

Drawings

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

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic view of the upper cover of FIG. 1 with a protective cover integrally formed thereon;

FIG. 4 is a schematic view of a portion A of FIG. 3;

fig. 5 is a schematic view of a connection structure between a protection cover and a protection base according to an embodiment of the present invention;

FIG. 6 is a top view of FIG. 5;

fig. 7 is a schematic sectional view B-B of the protective cover and the protective base connected to each other in fig. 6.

Description of the reference numerals

100-cell 110 battery pack 120 end plate 121 protects base 1211 outer casing 1212, first opening 1213, second opening 1214 card hole 130, upper cover 141 of side plate 140, upper cover body 142, protective cover 1421 transition part 1422 cover 1423 connecting part 1424 bottom wall 1425 first side wall 1426, second side wall 1427 bridging part 1424 bottom wall 1425 first side wall 1427 bridging part 1428 baffle part 1429 card hole 143 card slot 150 bus bar support 151 buckle 152 output pole bus bar

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 use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.

As shown in fig. 1 and fig. 2, the present invention provides a battery module, which includes a battery pack 110 formed by stacking a plurality of battery cells 100 along a thickness direction, wherein in the embodiment shown in fig. 1, the stacked battery pack 110 is in a rectangular parallelepiped shape. An end plate 120 is arranged around the outer portion of the battery pack 110, the end plate 120 is arranged at two ends of the battery pack 110 in the width direction, and a protective base 121 is arranged on the end plate 120. In addition, an upper cover 140 is disposed above the battery pack 110, the upper cover 140 includes an upper cover body 141, a protective cover 142 is integrally formed on a side of the upper cover body 141, and the protective cover 142 is disposed corresponding to and connected to the protective base 121. That is to say, the utility model discloses a side integrated into one piece at the upper cover body 141 of battery module has protective cover 142, makes protective cover 142 correspond the setting with the protection base 121 that sets up on end plate 120 and links to each other, simple structure, compactness, dismantles convenient and low cost. As shown in fig. 1, side plates 130 are provided on both sides of the battery pack 110 in the longitudinal direction, in addition to the end plates 120. The end plates 120, the side plates 130, and the upper cover 140 together constitute a protective frame that is enclosed outside the battery pack 110.

As shown in fig. 1 to fig. 3 in combination with fig. 4 to fig. 7, the protecting cover 142 includes a transition portion 1421 formed by convexly bending along a side of the upper cover body 141, a cover body 1422 extending from the transition portion 1421, and connecting portions 1423 disposed at two sides of the cover body 1422. As shown in fig. 5, the protection base 121 includes an outer casing 1211, and a first opening 1212 is formed at a top of the outer casing 1211; the connecting portion 1423 is used for connecting with the protection base 121 and shielding the first opening 1212. More specifically, the connecting portion 1423 is a U-shaped member and includes a bottom wall 1424, and a first side wall 1425 and a second side wall 1426 respectively extending and bending on two sides of the bottom wall 1424, the first side wall 1425 is formed by extending and bending the cover 1422, and the top of the second side wall 1426 extends and bends to be a bridging portion 1427 bridging the edge of the first opening 1212 of the protection base 121. A second opening 1213 is opened at the front side of the outer casing 1211; a baffle part 1428 is formed by extending and bending along one side of the cover 1422 away from the transition part 1421; the protective cover 142 is connected to the protective base 121 and shields at least a portion of the second opening 1213. To facilitate assembly, the ends of the flapper portion 1428 are rounded. In order to facilitate the detachment operation, a fastening hole 1214 is formed in the outer shell 1211 of the protection base 121, a fastening hook 1429 is correspondingly disposed on the outer surface of the second sidewall 1426 of the connecting portion 1423, and the fastening hook 1429 is embedded in the fastening hole 1214 to connect and fix the protection cover 142 and the protection base 121. In order to facilitate the pressing and prevent the fracture during the detachment process, the first side wall 1425 and the bottom wall 1424 of the connecting portion 1423 and the second side wall 1426 and the bottom wall 1424 are in arc transition.

As shown in fig. 2, further, a bus bar support 150 is disposed below the upper cover 140, a slot 143 is disposed on the peripheral edge of the upper cover 140, and a buckle 151 is correspondingly disposed on the peripheral edge of the bus bar support 150; or, the peripheral edge of the upper cover 140 is provided with a buckle, and the peripheral edge of the busbar bracket 150 is correspondingly provided with a clamping groove; the upper cover 140 and the bus bar support 150 are fastened and fixed to each other in the locking groove 143 by the fastening 151. In order to ensure that the top cover 140 and the bus bar support 150 are connected tightly and uniformly, the number of the slots 143 and the catches 151 provided on the peripheral edge of the top cover 140 or the bus bar support 150 is plural. And may be equally spaced along the peripheral edge, typically without interference from other components.

The assembly process of the battery module provided in the embodiment shown in fig. 1 to 7 is such that: the battery pack 110 is formed by stacking a plurality of battery cells 100 along the thickness direction, the battery pack 110 is fixed by welding a front end plate 120, a rear end plate 120, a left side plate 130 and a right side plate 130 into a frame, a bus bar support 150 is further arranged on the battery pack 110, the bus bar support 150 is fixed on the battery pack 110 through the side plates 130, a positive protective base 121 and a negative protective base 121 of a battery module are fixed on the upper portions of the end plates 120, the battery pack 110 is converged together after being connected in series or in parallel and then output through an output electrode bus bar 152, the output electrode bus bar 152 is fixed between a protective cover 142 and the protective bases 121, an upper cover 140 is clamped and fixed with the bus bar support 150, and meanwhile, the protective cover 142 arranged on the upper cover 140 is clamped and fixed with.

As can be seen from the above, in the present invention, since the upper cover 140 and the protective cover 142 are integrated together and are molded integrally, the overall structure of the upper cover is compact and the processing process is simple, wherein the clamping grooves 143 respectively arranged in the length direction and the width direction of the upper cover 140 are connected with the corresponding buckles 151 arranged in the length direction and the width direction of the bus bar support 150 in a one-to-one manner, so as to fix the upper cover 140 and the bus bar support 150 together in a clamping manner. Meanwhile, two U-shaped connecting portions 1423 are disposed on two sides of the protective cover 142 integrally molded with the upper cover 140, and a hook 1429 is correspondingly disposed on an outer surface of the second sidewall 1426 of the U-shaped structure forming the connecting portion 1423. The two U-shaped connecting portions 1423 of the protecting cover 142 on the upper cover 140 are deformed inward and clamped at two sides of the protecting base 121 to realize the fixing and fastening in the X direction; meanwhile, a hook 1429 provided on the U-shaped connecting portion 1423 is engaged with the engaging hole 1214 of the protective base 121, so that the limiting and fixing in the Z direction are achieved.

When assembling or needing to be disassembled for replacement, the connecting portion 1423 of the U-shaped structure of the protecting cover 142 is pressed inward, and the pressing direction is shown by the arrow in fig. 7. The distance between the two ends of the protecting cover 142 is smaller than the distance in the length direction of the first opening 1212 formed by the outer casing 1211 of the protecting base 121, and the hooks 1429 on the connecting portions 1423 of the two U-shaped structures are away from the latching holes 1214 on the protecting base 121, so that the upper cover 140 can be removed upward from the protecting base 121.

Furthermore, the utility model also provides a power battery package, power battery package includes as above the battery module. That is to say, in the power battery pack provided by the present invention, the upper cover 140 of each battery module and the protective cover 142 are integrally molded, and the connecting portions 1423 of the U-shaped structures are disposed on both sides of the protective cover 142. The protecting cover 142 and the protecting base 121 are connected or disconnected by pressing the connecting part 1423 inward. For more details, reference is made to the foregoing, and further description is omitted here.

To sum up, the utility model provides a battery module and power battery package thereof through moulding plastics upper cover and protective cover as an organic whole, and compact structure and protective cover are difficult for droing, have improved the security of battery module and power battery package again when fixed inseparable, and processing technology is simple and low cost.

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. The technical concept of the present invention is within the scope of the present invention, which can be modified in a variety of ways, for example, the shape of the protection base can be other shapes instead of a rectangle, and the shape of the protection cover can be set correspondingly. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. 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, its characterized in that, includes group battery (110) the tip on the width direction of group battery (110) is equipped with end plate (120) the top of group battery (110) is equipped with upper cover (140), be equipped with protection base (121) on end plate (120), upper cover (140) are including upper cover body (141), the side integrated into one piece of upper cover body (141) be used for with protection base (121) correspond protection cover (142) that sets up and link to each other.

2. The battery module according to claim 1, wherein the protective cover (142) comprises a transition part (1421) formed by convexly bending along the side of the upper cover body (141), a cover body (1422) extending from the transition part (1421), and connecting parts (1423) arranged on two sides of the cover body (1422);

the protective base (121) comprises an outer shell (1211), and a first opening (1212) is formed in the top of the outer shell (1211);

the connecting part (1423) is used for connecting with the protective base (121) and shielding the first opening (1212).

3. The battery module according to claim 2, wherein the connecting part (1423) is a U-shaped member and comprises a bottom wall (1424) and a first side wall (1425) and a second side wall (1426) extending and bending on both sides of the bottom wall (1424), respectively, the first side wall (1425) is formed by extending and bending the cover body (1422), and the top of the second side wall (1426) is extended and bent to be a lap joint part (1427) overlapping the edge of the first opening (1212) of the protection base (121).

4. The battery module according to claim 2, wherein the front side of the outer case (1211) is opened with a second opening (1213); a baffle part (1428) is formed by extending and bending along one side of the cover body (1422) far away from the transition part (1421); the protective cover (142) is connected to the protective base (121) and shields at least a portion of the second opening (1213).

5. The battery module according to claim 4, wherein the ends of the baffle portions (1428) have rounded corners.

6. The battery module according to claim 3, wherein the outer casing (1211) of the protective base (121) is provided with a clamping hole (1214); a clamping hook (1429) is correspondingly arranged on the outer surface of the second side wall (1426) of the connecting part (1423); the clamping hook (1429) is embedded in the clamping hole (1214) to enable the protective cover (142) to be fixedly connected with the protective base (121).

7. The battery module according to claim 3, wherein the connecting portion (1423) has a circular arc transition between the first side wall (1425) and the bottom wall (1424), and between the second side wall (1426) and the bottom wall (1424).

8. The battery module according to claim 1, wherein a bus bar support (150) is arranged below the upper cover (140), a clamping groove (143) is formed in the peripheral edge of one of the upper cover (140) and the bus bar support (150), and a clamping buckle (151) is correspondingly formed in the peripheral edge of the other one of the bus bar support (150) and the upper cover (140); the upper cover (140) and the bus bar support (150) are buckled in the clamping groove (143) through the buckle (151) and are fixedly connected with each other.

9. The battery module according to claim 8, wherein the catching grooves (143) and the catching hooks (151) are provided at equal intervals around the peripheral edge of the upper cover (140) or the bus bar holder (150).

10. A power battery pack, characterized in that the power battery pack comprises the battery module according to any one of claims 1-9.