TW201947797A - Battery unit, battery module and car - Google Patents

Abstract

The present disclosure relates to the field of batteries, and discloses a battery unit, a battery module, and an automobile, wherein the battery unit includes a casing, a cover plate, a pole, and a pole core, and the expansion end of the pole core is provided with a pole fitting region and The expansion area, the cover plate includes a first plate covering the top surface of the expansion area, a second plate covering the pole fitting area, and a third plate connecting the first plate and the second plate. According to the above technical solution, in some end faces of the pole core body, a pole fitting region corresponding to the pole column and a expansion region protruding from the pole fitting region are respectively disposed, thereby increasing in a limited space near the pole column. The volume of the pole core body increases the battery capacity, and the multi-stage structure formed on the cover plate to match the expansion end of the pole core body simplifies the structure.

Description

Battery unit, battery module and automobile

Cross-reference to related applications

This application requires a Chinese patent application filed on January 8, 2018 with the application number 201810015504.9, a Chinese patent application filed on January 8, 2018 with the application number 201810016060.0, and an application filed on January 8, 2018 with the application number 201810015506.8 Chinese patent application, Chinese patent application filed on January 8, 2018 with application number 201810016052.6, Chinese patent application filed on January 8, 2018 with application number 201810015502.X, and application number submitted on January 8, 2018 Chinese patent application 201810016520.X, Chinese patent application filed on January 8, 2018 with application number 201810015503.4, Chinese patent application filed on January 8, 2018 with application number 201810016056.4, and submitted on May 17, 2018 Priority of Chinese patent application with application number 201810476328.9.

The disclosure relates to the field of batteries, and in particular, to a battery unit, a battery module, and an automobile.

With the development of science and technology, various electronic devices and electric tools have been widely used, such as mobile phones and electric vehicles. As the core component, the performance of the battery has an important impact on the overall performance and user experience. In particular, the battery capacity determines The overall battery life is also an important concern for users.

The battery includes a casing and a pole center disposed in the shell. The volume of the battery cell determines the pole center volume to a certain extent and is an important determinant of battery capacity. In electronic devices and power tools, the installation environment of the battery is basically determined. Due to the size of the space occupied by the battery, the overall volume of the battery is difficult to increase without restriction, and the capacity of the battery is therefore also limited.

The purpose of this disclosure is to provide a battery unit to increase battery capacity in the presence of space constraints.

In order to achieve the above object, the present disclosure provides a battery unit, which is characterized in that the battery unit includes a casing, a cover plate, a pole, and a pole core. The casing has an opening, and the opening is sealed by the cover. The pole ECG is electrically connected and extends through the cover plate. The pole core includes a pole center body with a dilated end, the expanded end is provided with a pole adaption area and an extension along the pole relative to the pole adaption area. The expansion area protruding in the direction, the pole fitting area is recessed with respect to the expansion area to form a pole installation space, the pole is at least partially disposed in the pole installation space, and the cover plate includes a sequential connection along the length direction The plurality of plates includes a first plate covering the top surface of the expansion area, a second plate covering the pole fitting area, and a first plate connecting the first plate and the second plate. Three plates.

Preferably, the casing includes a plurality of side plates, and the side plates, the first plate member and the third plate member surround a volume expansion cavity for accommodating the volume expansion area.

Preferably, the capacity expansion end is provided with one pole adaption area located in the middle and two capacity expansion areas respectively located on two sides of the pole adaptation area, and the two ends of the second plate in the length direction pass through the expansion area respectively. The third plate is connected to two of the first plates.

Preferably, the capacity expansion end is provided with one of the capacity expansion area in the middle and two pole fitting areas on two sides of the capacity expansion area, respectively, and two ends of the first plate in the length direction pass through the third and third areas respectively. The plate is connected to two of the second plates.

Preferably, the two second plates are coplanar.

Preferably, the capacity expansion end is provided with three capacity expansion areas and two pole adaption areas, and between two adjacent capacity expansion areas is provided with the pole adaption area, and the cover plate is provided with three of the first plates, Two of the second plates and four of the third plates, and the second plate is disposed between two adjacent first plates.

Preferably, the pole is connected to the pole core body and extends through the second plate.

Preferably, the pole core includes a pole ear connected to the pole body, and the pole ear is connected to the pole.

Preferably, the battery unit includes an inner lead piece provided on an inner surface of the cover plate, the pole is connected to the inner lead piece, and the pole is connected to the pole ear through the inner lead piece.

Preferably, the pole ear is disposed in the pole adaption area.

Preferably, the pole ear is integrally formed with the pole core body.

In addition, the disclosure also provides a battery module, wherein the battery module includes the battery unit described in the above scheme.

In addition, the disclosure also provides an automobile, wherein the automobile includes at least one battery module according to the above solution.

According to the above technical solution, in some end faces of the pole core body, a pole fitting area corresponding to the pole and an expansion area protruding relative to the pole fitting area are respectively provided, thereby increasing in a limited space near the pole. The volume of the polar core body increases the battery capacity, and the cover plate is formed with a multi-segment structure matching the expansion end of the polar core body, which simplifies the structure.

The specific implementation of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the disclosure, and are not intended to limit the disclosure.

The present disclosure provides a battery unit, wherein the battery unit includes a case 3, a cover plate 4, a pole 5 and a pole core. The case 3 has an opening 32, and the opening 32 is closed by the cover 4 and the pole 5 It is electrically connected to the pole core and extends through the cover 4. The pole core includes a pole core body 1 with a dilation end 11. The dilation end 11 is provided with a pole adaption region 112 and is opposite to the pole adaption region. 112 is an expansion area 111 protruding along the extending direction of the pole 5, the pole adaptation area 112 is recessed relative to the expansion area 111 to form a pole installation space, and the pole 5 is at least partially disposed on the pole In the installation space, the cover plate 4 includes a plurality of plates sequentially connected along the length direction. The plurality of plates include a first plate 41 covering the top surface of the expansion area 111 and a second plate covering the pole fitting area 112. A plate 42 and a third plate 43 connecting the first plate 41 and the second plate 42.

In this solution, the cover plate 4 and the shell 3 together form a housing for accommodating the pole center, wherein the cover plate 4 is used to install the pole 5. The pole center includes a pole center body 1, and one end of the pole center body 1 is a capacity expansion end 11. The capacity expansion end 11 is provided with a pole fitting area 112 and a capacity expansion area 111, and the capacity expansion area 111 projects relative to the pole fitting area 112. In order to achieve capacity expansion, the space formed by the pole adaption region 112 being recessed compared to the capacity expansion region 111 is the pole installation space, and at least a part of the pole 5 is located in the pole installation space.

In the disclosure concept of this solution, the end of the pole 5 where the pole 5 is mounted is expanded, that is, the capacity expansion end. In the expanded end, the area that cooperates with the pole 5 (that is, the pole adaptation area 112) is limited by the pole 5. It cannot protrude outward, and there is available space in other areas because it is not occupied by the pole 5. Therefore, the core body 1 in this part of the area is set to protrude outward, that is, the expansion area 111. The drop space formed by the expansion area 111 and the pole adaption area 112 is the pole installation space for installing the pole 5. Of course, the pole 5 can be all installed in the pole installation space or only a part of it The installation space.

In order to cooperate with the enlarged end 11 of the pole core body 1, the cover plate 4 for mounting the pole 5 is also roughly formed into a shape corresponding to the enlarged end 11. As shown in FIG. 1, FIG. 2, and FIG. 3, the cover plate 4 includes a plurality of plates along the length direction. The first plate 41 can be used to cover the top surface of the expansion area 111, and the second plate 42 can be used to cover the pole adaptation area 112. The distribution area 112 has a height drop, and a third plate 43 connecting the first plate 41 and the second plate 42 is also provided. The multi-segment structure of the cover plate 4 is relatively simple and convenient for processing and manufacturing.

In addition, the casing 3 includes a plurality of side plates, and the side plates and the first plate member 41 and the third plate member 43 surround a volume expansion cavity that accommodates the volume expansion area 111. The plurality of side plates of the casing 3 are plate portions that are engaged with the edges of the cover plate 4. The cover plate 4 is formed in a multi-segment structure. Therefore, the upper edges of the side plates need to be matched with the shape of the cover plate 4 to be joined to each other to achieve sealing. The first plate 41 and the third plate 43 protruding from the second plate 42 and the side plate form a cavity structure, that is, the expansion cavity, and the expansion cavity can accommodate at least a part of the expansion area 111.

According to an embodiment of the present disclosure, the capacity expansion end 11 is provided with one pole adaption region 112 and two capacity expander regions 111 respectively located on two sides of the pole adaption region. The second plate 42 extends along the The two ends in the length direction are respectively connected to the two first plates 41 through the third plate 43. The expansion end 11 is provided with a pole adapting area 112 and two expansion areas 111. Correspondingly, the cover plate 4 is provided with a second plate 42 and two first plates 41, and the two first plates are connected by two third plates 43. The plate 41 is connected to both ends of the second plate 42 so that the shape of the cover plate 4 corresponds to the shape of the enlarged end 11.

According to an embodiment of the present disclosure, the capacity expansion end 11 is provided with one of the capacity expansion area 111 and two pole adaptation areas 112 located on both sides of the capacity expansion area 111 in the middle. The first plate 41 is along the length direction. The two ends are connected to two second plates 42 through two third plates 43 respectively. As shown in FIG. 1, FIG. 2, and FIG. 3, the expansion area 111 is disposed at the middle position of the expansion end 11, and pole pole adaptation areas 112 are respectively disposed on both sides thereof. Accordingly, the cover plate 4 is disposed in the middle. The first plate 41 and the third plate 43 on both sides, and the two second plates 42 are connected to the two ends of the first plate 41 through the two third plates 43.

Further, the two second plates 42 are coplanar. The second and second plates 42 correspond to the pole adapting region 112 of the pole core body 1. The poles adapting region 112 is an area restricted by the poles and has the same height. Therefore, the second and second plates 42 can be set as Have the same height, that is, coplanar setting.

According to an embodiment of the present disclosure, the expansion end 11 is provided with three of the expansion area 111 and two of the pole-fitting area 112, and between the two adjacent expansion areas 111 is provided with the pole-fitting area 111 and the cover. The plate 4 is provided with three first plate members 41, two second plate members 42, and four third plate members 43. A second plate member 42 is provided between two adjacent first plate members 41. The expansion area 111 and the pole adaptation area 112 are alternately arranged in a straight direction. Correspondingly, the cover plate 4 is provided with three first plates 41 and two second plates 42, and the second plate 42 is provided adjacent to two The first plates 41 are alternately arranged, that is, the two ends of the second plates 42 are connected to the first plates 41 through the third plates 43 respectively.

The pole 5 is connected to the pole core body 1 and extends through the second plate 42. The poles 5 extend to the outside through the second plate 42 to be connected to external electrical equipment.

In addition, the pole center includes a pole ear 2 connected to the pole body 1, and the pole ear 2 is connected to the pole 5. The pole center may include two pole tabs 2 respectively corresponding to the positive electrode and the negative pole. The pole tabs 2 are electrically connected to the pole core body 1, and the pole posts 5 are respectively connected to the pole electrodes 2.

In addition, the battery unit includes an inner lead-out piece 6 provided on the inner side of the cover plate 4. The pole 5 is connected to the inner lead-out piece 6. The pole 5 is connected to the pole lug 2 through the inner lead-out piece 6. Specifically, the inner lead-out piece 6 is disposed on the inner side of the second plate member 42. The pole 5 passes through the second plate member 42 to connect the inner lead-out piece 6, and is electrically connected to the pole ear 2 through the inner lead-out piece 6.

In addition, the pole ear 2 is disposed in the pole-fitting area 112. The pole 2 can be connected to the pole adaption region 112 and all set in the pole adaption region 112, or can be connected to the expansion area 111 or other positions of the pole center body 1 and extended to the pole adaption region 112, so that Connected to the pole 5.

Preferably, the pole tab 2 is integrally formed with the pole core body 1. The pole ear 2 and the pole core body 1 are integrally formed from a material made of the pole core, and the pole ear 2 includes a pole pole as a positive electrode and a negative pole. Of course, in other embodiments, the pole tabs 2 can also be fabricated and connected to the pole core body 1 separately.

In addition, the disclosure also provides a battery module, wherein the battery module includes the battery unit described in the above scheme. The battery module may include a plurality of the battery cells, and the plurality of battery cells are connected in series or parallel to supply power.

In addition, the disclosure also provides an automobile, wherein the automobile includes at least one battery module according to the above solution.

The preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, but the present disclosure is not limited thereto. Within the scope of the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present disclosure no longer provides various possible combinations. Explained separately. However, these simple variations and combinations should also be regarded as the content disclosed in this disclosure, which all belong to the protection scope of this disclosure.

1‧‧‧Big Heart Subject

2‧‧‧ pole

3‧‧‧ shell

4‧‧‧ cover

5‧‧‧pole

6‧‧‧ inner lead

11‧‧‧Capacity expansion

111‧‧‧Expansion area

112‧‧‧Pole Adapter

32‧‧‧ opening

41‧‧‧First plate

42‧‧‧Second plate

43 ‧‧‧ third plate

FIG. 1 is a perspective view of a battery unit according to an embodiment of the disclosure;

FIG. 2 is an exploded view of the battery unit according to the embodiment of the disclosure, wherein the pole center is not shown;

FIG. 3 is a perspective view of a cover plate according to an embodiment of the disclosure;

FIG. 4 is a polar center perspective view according to an embodiment of the disclosure.

Claims (13)

A battery unit is characterized in that the battery unit includes a housing, a cover plate, a pole post, and a pole core. The housing has an opening, the opening is closed by the cover plate, the pole post and the pole ECG. Connected and extending through the cover plate, the pole center includes a pole center body having a capacity expansion end, the capacity expansion end is provided with a pole adaption area and is convex along the extension direction of the pole relative to the pole adaption area. An expansion area is formed, the pole adaption area is recessed with respect to the expansion area to form a pole installation space, the pole is at least partially disposed in the pole installation space, and the cover plate includes a series of connecting in order along the length direction. A plurality of plates, the plurality of plates including a first plate covering the top surface of the expansion area, a second plate covering the pole adapting area, and a connection between the first plate and the second plate A third plate. The battery unit according to item 1 of the scope of patent application, wherein the casing includes a plurality of side plates, and the side plates and the first plate and the third plate enclose an expansion cavity that accommodates the expansion area. The battery cell according to item 2 of the scope of patent application, wherein the capacity expansion terminal is provided with one of the pole-fitting areas and two of the capacity-fitting areas respectively located on both sides of the pole-fitting areas, and the second The two ends of the plate in the length direction are respectively connected to the two first plates through the third plate. The battery cell according to item 2 or item 3 of the patent application scope, wherein the capacity expansion terminal is provided with one of the capacity expansion area in the middle and two pole adaption areas respectively located on both sides of the capacity expansion area. Two ends of a plate member along the length direction are connected to the second plate member through the two third plate members, respectively. The battery cell according to item 4 of the scope of patent application, wherein the two second plates are disposed on the same plane. The battery cell according to any one of claims 2 to 5 in the scope of the patent application, wherein the expansion end is provided with three expansion areas and two pole adaption areas, and two adjacent expansion areas are provided between the expansion ends. There is a pole adapting area. The cover plate is provided with three of the first plate, two of the second plate, and four of the third plate. The second plate is provided between two adjacent first plates. Pieces. The battery cell according to any one of claims 2 to 6, wherein the pole is connected to the core body and extends through the second plate. The battery cell according to item 7 of the scope of patent application, wherein the pole core includes a pole ear connected to the pole body, and the pole ear is connected to the pole post. The battery cell according to item 8 of the patent application scope, wherein the battery cell includes an inner lead-out piece disposed on an inner surface of the cover plate, the pole is connected to the inner lead-out piece, and the pole post passes through the inner lead-out piece Connect to this pole. The battery unit according to item 8 or item 9 of the scope of patent application, wherein the pole ear is disposed in the pole adaption area. The battery cell according to any one of claims 8 to 10 in the scope of patent application, wherein the pole tab is integrally formed with the pole core body. A battery module is characterized in that the battery module includes the battery cell according to any one of the first to eleventh patent applications. An automobile is characterized in that the automobile includes at least one battery module according to item 12 of the scope of patent application.