CN215771460U

CN215771460U - Battery pack

Info

Publication number: CN215771460U
Application number: CN202121990507.8U
Authority: CN
Inventors: 舒元茂; 尤悦丘; 郑卫鑫; 鲁志佩; 孙华军
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-08
Anticipated expiration: 2031-08-23

Abstract

The utility model relates to a battery pack, this battery pack include tray (101) and locate a plurality of groups of batteries in tray (101), be provided with crossbeam (102) in tray (101), crossbeam (102) are located two between the group of batteries, battery pack still includes fuse (2), fuse (2) are used for establishing ties and are located two of crossbeam (102) both sides the group of batteries and with crossbeam (102) heat conduction is connected. Through above-mentioned technical scheme, the produced heat of fuse can in time be conducted to the battery package that this disclosure provided to can improve the life of fuse.

Description

Battery pack

Technical Field

The present disclosure relates to the field of battery technology, and in particular, to a battery pack.

Background

In the battery pack, the fuses are generally installed in a distribution box and connected in series in the whole circuit, wherein the distribution box is assembled and combined by an upper cover, a bottom cover and a front panel to form a closed installation space for installing the fuses.

The fuse can generate heat when using, can produce higher heat if the battery package voltage is unstable, and the block terminal is made by the plastic material and the fuse is located inclosed space, therefore difficult rapid transfer heat and lead to heat accumulation around the fuse in the short time. Heat accumulation in the distribution box can not only affect the service life of the fuse, but also accelerate the damage or aging of other parts in the distribution box.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a battery package, this battery package can in time conduct the produced heat of fuse to can improve the life of fuse.

In order to achieve the above object, the present disclosure provides a battery pack, which includes a tray and a plurality of battery packs disposed in the tray, wherein a cross beam is disposed in the tray, the cross beam is disposed between two battery packs, and the battery pack further includes a fuse, the fuse is disposed in series between two battery packs disposed on two sides of the cross beam and in thermal contact with the cross beam.

Optionally, a heat conducting fin is disposed between the fuse and the cross beam, and two opposite sides of the heat conducting fin are respectively attached to the fuse and the cross beam.

Optionally, the beam is a metal piece and is provided with an accommodating groove, and the fuse is arranged in the accommodating groove.

Optionally, the battery pack further comprises a fixing seat, the fuse is detachably mounted on the cross beam through the fixing seat, an opening is formed in the fixing seat, and the heat conducting strip penetrates through the opening to be attached to the cross beam.

Optionally, the fixing seat includes a bottom plate and a plurality of side plates connected to the bottom plate, and the bottom plate is mounted on the cross beam and encloses an accommodating space for accommodating the fuse together with the side plates.

Optionally, the positive terminal and the negative terminal of fuse are connected with anodal copper bar and negative pole copper bar respectively, and two of relative setting seted up respectively on the curb plate and be used for dodging anodal copper bar with dodging of negative pole copper bar groove.

Optionally, a first mounting groove and a second mounting groove are arranged on the bottom plate, a first fastener penetrates through the positive ends of the positive copper bar and the fuse to be fastened in the first mounting groove, and a second fastener penetrates through the negative ends of the negative copper bar and the fuse to be fastened in the second mounting groove.

Optionally, a first connecting hole is formed in the fixing seat, a first mounting hole is formed in the cross beam, and a third fastener penetrates through the first connecting hole to be in threaded connection with the first mounting hole.

Optionally, the battery pack further comprises a sealing cover and an access cover, the sealing cover is packaged on the tray, the fuse is located under the access opening, and the access cover is detachably mounted on the sealing cover to cover the access opening.

Optionally, sealed lid with be provided with linking bridge and sealing strip between the access cover, the linking bridge set firmly in sealed lid is provided with the holding tank, the sealing strip is located the linking bridge with between the access cover and hold in the holding tank, the access cover pass through linking bridge detachably install in sealed lid.

Through above-mentioned technical scheme, the battery package that this disclosure provided is through being connected fuse and crossbeam heat conduction, can be with produced heat of fuse to crossbeam quick conduction through this kind of mode to can increase the heat radiating area of fuse, utilize the coefficient of heat conductivity of crossbeam to be greater than the characteristics of the coefficient of heat conductivity of air, avoid the fuse to pile up in the use around the heat, and then can prevent that the fuse from damaging, improve the life of fuse, also can reduce the number of times that the fuse maintained or changed from this.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a battery pack provided in an embodiment of the present disclosure;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a partial perspective exploded view of a battery pack provided by an embodiment of the present disclosure;

fig. 4 is a partial cross-sectional view of a battery pack provided by an embodiment of the present disclosure, showing a fuse detachably mounted to a cross member;

fig. 5 is a schematic perspective view of a fixing seat in a battery pack provided in an embodiment of the present disclosure.

Description of the reference numerals

101-a tray; 102-a beam; 103-a sealing cover; 104-access cover; 105-a connecting bracket; 106-sealing strip; 107-second connection hole; 108-a receiving groove; 109-a second mounting hole; 2-a fuse; 3-a heat conducting sheet; 4-fixing the base; 401-a backplane; 402-side plate; 403-opening; 404-avoidance slot; 405-a first mounting groove; 406-a second mounting groove; 407-a first connection aperture; 5-positive copper bar; 6-negative electrode copper bar; 7-a first fastener; 8-a second fastener; 9-a third fastener; 10-fourth fastener.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "upper and lower" generally means "upper and lower" opposed to each other in the gravity direction when the respective components are in the use state, unless otherwise specified. In addition, the terms "first," "second," "third," "fourth," and the like as used herein are intended to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

According to the specific embodiment of the present disclosure, referring to fig. 1 to 5, a battery pack is provided, which includes a tray 101 and a plurality of battery packs disposed in the tray 101, a cross beam 102 is disposed in the tray 101, the cross beam 102 is disposed between two of the battery packs, and the battery pack further includes a fuse 2, and the fuse 2 is configured to connect two of the battery packs disposed at two sides of the cross beam 102 in series and is thermally connected to the cross beam 102. Wherein, the group battery includes a plurality of battery of arranging in proper order.

Through above-mentioned technical scheme, the battery package that this disclosure provided is through being connected fuse 2 and crossbeam 102 heat conduction, can be with produced heat rapid conduction of fuse 2 to crossbeam 102 through this kind of mode, with the heat radiating area that can increase fuse 2, the coefficient of heat conductivity that utilizes crossbeam 102 is greater than the characteristics of the coefficient of heat conductivity of air, it piles up to avoid fuse 2 in the use around the heat, and then can prevent fuse 2 from damaging, improve the life of fuse 2, from this also can reduce the number of times that fuse 2 maintained or changed.

It should be explained here that a "thermally conductive connection" is to be understood as meaning that the fuse 2 is in direct contact with the cross beam 102, in which case the heat generated by the fuse 2 is dissipated directly via the cross beam 102; alternatively, a heat conductive member may be provided between the fuse 2 and the cross member 102, and in this case, the heat generated by the fuse 2 may be transmitted to the cross member 102 through the heat conductive member to be dissipated.

In some embodiments, a heat conductive sheet 3 may be disposed between the fuse 2 and the cross beam 102, and opposite sides of the heat conductive sheet 3 are respectively attached to the fuse 2 and the cross beam 102, in which case, heat generated by the fuse 2 is conducted to the cross beam 102 through the heat conductive sheet 3 to achieve rapid heat dissipation of the fuse 2.

Wherein opposite sides of the thermally conductive sheet 3 may be in direct contact with or bonded to the fuse 2 and the cross member 102, respectively. In some embodiments, the heat conducting sheet 3 may be fixed at the bottom of the fuse 2 in an adhesive manner and is a heat conducting silicone sheet, the heat conducting coefficient of the heat conducting silicone sheet is 2-5W/m.k, the cross beam 102 may be a metal piece, such as an aluminum profile, and the heat conducting coefficient of the cross beam 102 is 237W/m.k, and the heat conducting coefficient of the cross beam 102 is far greater than the heat conducting coefficient of air, such as 0.03W/m.k, so that heat generated by the fuse 2 can be timely conducted to the cross beam 102, thereby preventing the fuse 2 from accumulating around heat in the using process, and further improving the service life of the fuse 2. In addition, the beam 102 may be made of other materials with high thermal conductivity, which is not limited in this disclosure.

In the specific embodiment provided by the present disclosure, referring to fig. 3 and 4 in combination, the cross beam 102 is provided with the accommodating groove 108, and the fuse 2 is disposed in the accommodating groove 108, so that the space occupied by the fuse 2 in the height direction of the battery pack can be reduced, which is beneficial to reducing the volume of the battery pack.

In the specific embodiment provided by the present disclosure, the battery pack may further include a fixing seat 4, and the fuse 2 is detachably mounted on the cross beam 102 through the fixing seat 4, so as to reliably fix the fuse 2 on the cross beam 102, wherein an opening 403 is provided on the fixing seat 4, and the heat conducting strip 3 passes through the opening 403 to be attached to the cross beam 102, thereby achieving a close contact between the heat conducting strip 3 and the cross beam 102, and facilitating conduction of heat generated by the fuse 2 to the cross beam 102.

In the specific embodiment provided by the present disclosure, referring to fig. 5, the fixing base 4 may include a bottom plate 401 and a plurality of side plates 402 connected to the bottom plate 401, the bottom plate 401 is mounted to the cross beam 102 and encloses an accommodating space for accommodating the fuse 2 together with the plurality of side plates 402, wherein the fuse 2 is detachably connected to the bottom plate 401 of the fixing base 4, and the fuse 2 is limited by the plurality of side plates 402 to reliably fix the fuse 2 in the accommodating space. The fixing base 4 may be an integrally formed part. Alternatively, the bottom plate 401 and the side plate 402 are separately manufactured and then coupled to form the fixing base 4.

In the specific implementation way that this disclosure provided, combine to refer to and show in fig. 3 and fig. 4, the positive terminal and the negative pole end of fuse 2 are connected with anodal copper bar 5 and negative pole copper bar 6 respectively, for the ease of being connected of anodal copper bar 5 and negative pole copper bar 6 and group battery, offer respectively on two curb plates 402 of the relative setting of fixing base 4 and be used for dodging anodal copper bar 5 and the dodging groove 404 of negative pole copper bar 6, so that anodal copper bar 5 and negative pole copper bar 6 can stretch out from the accommodation space that fixing base 4 formed, thereby be connected with the group battery, in order to realize the series connection of fuse 2 and group battery.

In the specific embodiment provided by the present disclosure, referring to fig. 4, a first mounting groove 405 and a second mounting groove 406 are provided on the bottom plate 401, the first fastening member 7 is fastened to the first mounting groove 405 through the positive terminal of the positive copper bar 5 and the fuse 2, and the second fastening member 8 is fastened to the second mounting groove 406 through the negative copper bar 6 and the negative terminal of the fuse 2, so that the fuse 2 is detachably connected to the fixing base 4, and in case the fuse 2 needs to be replaced or maintained, the fuse 2 can be detached from the fixing base 4 by unscrewing the first fastening member 7 and the second fastening member 8. The first fastening member 7 may be configured as any suitable fastening member such as a bolt, a screw, a pin, and the like, and the present disclosure is not particularly limited thereto. Likewise, the second fastener 8 may be configured as any suitable fastening member such as a bolt, a screw, a pin, etc., and the present disclosure is not particularly limited thereto.

In the specific embodiment provided by the present disclosure, the fixing base 4 is provided with a first connecting hole 407, the cross beam 102 is provided with a first mounting hole, and the third fastening member 9 passes through the first connecting hole 407 to be in threaded connection with the first mounting hole, so as to achieve the detachable connection between the fixing base 4 and the cross beam 102. The third fastening member 9 may be configured as any suitable fastening member such as a bolt, a screw, a pin, etc., and the present disclosure is not particularly limited thereto.

In the specific embodiment provided by the present disclosure, referring to fig. 1 and 2, the battery pack further includes a sealing cover 103 and an access cover 104, the sealing cover 103 is enclosed in the tray 101 and provided with an access opening, the fuse 2 is located right below the access opening, and the access cover 104 is detachably mounted to the sealing cover 103 to cover the access opening. In the battery package normal use in-process, if fuse 2 damages and when needing the maintenance to be changed, can dismantle fuse 2 through dismantling access cover 104 in order to expose the access hole like this, and need not pull down sealed lid 103 from tray 101 in order to maintain or change fuse 2, convenient operation and to a great extent have improved the efficiency of maintenance, inspection and change fuse 2.

In the specific embodiment provided by the present disclosure, a connecting bracket 105 and a sealing strip 106 are arranged between the sealing cover 103 and the access cover 104, the connecting bracket 105 is fixedly arranged on the sealing cover 103 and is provided with a receiving groove, the sealing strip 106 is arranged between the connecting bracket 105 and the access cover 104 and is received in the receiving groove, and the access cover 104 is detachably mounted on the sealing cover 103 through the connecting bracket 105, so that the sealing between the access cover 104 and the sealing cover 103 can be realized through the sealing strip 106, and liquid or dust is better prevented from entering the inside of the tray 101 body.

In the specific embodiment provided by the present disclosure, the access cover 104 is provided with a second connecting hole 107, the connecting bracket 105 is provided with a second mounting hole 109, and the fourth fastener 10 passes through the second connecting hole 107 to be screwed with the second mounting hole 109, so as to realize the detachable connection of the access cover 104 and the connecting bracket 105. The fourth fastener 10 may be configured as any suitable fastening member such as a bolt, a screw, a pin, etc., and the present disclosure is not particularly limited thereto.

In the embodiments provided by the present disclosure, the connecting bracket 105 may be welded to the sealing cover 103 to be fixedly connected with the sealing cover 103.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a battery pack, this battery pack includes tray (101) and locates a plurality of groups of batteries in tray (101), be provided with crossbeam (102) in tray (101), crossbeam (102) are located two between the group of batteries, its characterized in that, battery pack still includes fuse (2), fuse (2) are used for establishing ties and are located two of crossbeam (102) both sides the group of batteries and with crossbeam (102) heat conduction is connected.

2. The battery pack according to claim 1, wherein a heat conductive sheet (3) is provided between the fuse (2) and the cross member (102), and opposite sides of the heat conductive sheet (3) are attached to the fuse (2) and the cross member (102), respectively.

3. The battery pack according to claim 1, wherein the beam (102) is a metal member and a receiving groove (108) is provided on the beam (102), and the fuse (2) is disposed in the receiving groove (108).

4. The battery pack according to claim 2, further comprising a fixing base (4), wherein the fuse (2) is detachably mounted on the cross member (102) through the fixing base (4), the fixing base (4) is provided with an opening (403), and the heat-conducting fin (3) passes through the opening (403) to be attached to the cross member (102).

5. The battery pack according to claim 4, wherein the fixing base (4) comprises a bottom plate (401) and a plurality of side plates (402) connected to the bottom plate (401), and the bottom plate (401) is mounted to the cross member (102) and encloses a receiving space for receiving the fuse (2) together with the plurality of side plates (402).

6. The battery pack according to claim 5, wherein the positive terminal and the negative terminal of the fuse (2) are respectively connected with a positive copper bar (5) and a negative copper bar (6), and the two oppositely arranged side plates (402) are respectively provided with an avoidance groove (404) for avoiding the positive copper bar (5) and the negative copper bar (6).

7. The battery pack according to claim 6, wherein the base plate (401) is provided with a first mounting groove (405) and a second mounting groove (406), a first fastening member (7) is fastened to the first mounting groove (405) through the positive end of the positive copper bar (5) and the fuse (2), and a second fastening member (8) is fastened to the second mounting groove (406) through the negative end of the negative copper bar (6) and the fuse (2).

8. The battery pack according to claim 4, wherein the fixing base (4) is provided with a first coupling hole (407), the cross member (102) is provided with a first mounting hole, and a third fastener (9) passes through the first coupling hole (407) to be threadedly coupled with the first mounting hole.

9. The battery pack according to any one of claims 1 to 8, further comprising a sealing cover (103) and an access cover (104), the sealing cover (103) being sealed to the tray (101) and being provided with an access opening, the fuse (2) being located directly below the access opening, the access cover (104) being detachably mounted to the sealing cover (103) to cover the access opening.

10. The battery pack according to claim 9, wherein a connecting bracket (105) and a sealing strip (106) are provided between the sealing cover (103) and the access cover (104), the connecting bracket (105) is fixedly attached to the sealing cover (103) and provided with a receiving groove, the sealing strip (106) is located between the connecting bracket (105) and the access cover (104) and received in the receiving groove, and the access cover (104) is detachably mounted to the sealing cover (103) through the connecting bracket (105).