CN218632382U

CN218632382U - Battery pack structure

Info

Publication number: CN218632382U
Application number: CN202222639208.0U
Authority: CN
Inventors: 文显亮; 李国伟; 林景水
Original assignee: Fujian Times Nebula Technology Co Ltd
Current assignee: Fujian Times Nebula Technology Co Ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-14
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a battery pack structure, which comprises a battery box body and an external insulation part; the external insulating part is positioned on one side of the battery box body, a first fixed seat is arranged on one side of the battery box body, and the external insulating part is connected with the battery box body through the first fixed seat; the external insulating part comprises a mounting groove, a battery management group and a high-voltage plug group, wherein the battery management group and the high-voltage plug group are fixed in the mounting groove. The condition of safety accidents such as short circuit, fire and the like caused by too short distance between the high-voltage connecting piece and the metal part is avoided, the battery management unit and the battery core form absolute insulation, and the high-voltage element is far away from the end plate, so that the safety of the battery pack is greatly improved.

Description

Battery pack structure

Technical Field

The utility model relates to an energy storage technology field especially relates to a battery package structure.

Background

With the rapid development of new energy industry, new energy automobiles and lithium battery energy storage are widely applied, but no matter the automobile and energy storage industry have higher and higher requirements on the endurance mileage and the charging and discharging multiplying power of batteries, however, high-multiplying-power charging and discharging can generate a large amount of heat to cause thermal runaway of battery cells, so that no matter the new energy automobiles or energy storage systems in the market have risks of safety accidents of uncontrolled ignition, for example, short circuit and ignition explosion occur in the assembling process of the battery cells, or in the driving process, the phenomena of battery connection and short circuit explosion occur in the batteries, because the existing electric box is used for providing energy density, the electric safety gap is limited, the high-voltage connecting piece is closer to the metal, and the short circuit problem and the accidents occur easily in the operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the safety accidents such as short circuit, fire and the like caused by too close distance between the high-voltage connecting piece and the metal part can be avoided.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a battery pack structure comprises a battery box body and an external insulating part;

the external insulating part is positioned on one side of the battery box body, a first fixed seat is arranged on one side of the battery box body, and the external insulating part is connected with the battery box body through the first fixed seat;

the external insulating part comprises a mounting groove, a battery management group and a high-voltage plug group, wherein the battery management group and the high-voltage plug group are fixed in the mounting groove.

Further, the mounting groove is a trapezoidal groove with a wide upper part and a narrow lower part.

Further, the high-voltage plug group is fixed on two sides of the battery management group.

Further, the battery management pack comprises a BMS, a BMS mounting bracket;

the high-voltage plug-in set comprises a high-voltage plug-in and an aluminum bar;

the BMS is fixed in the mounting groove through the BMS mounting bracket; the high-voltage connector is locked on the mounting groove through the aluminum row.

Furthermore, the aluminum bar is provided with three bending parts and two bolt holes, the first bending part and the second bending part form a step shape, the first bending part and the third bending part are connected with two adjacent side edges of the second bending part, the third bending part is connected with the first bending part, the first bending part is provided with a first bolt hole, and the third bending part is provided with a second bolt hole;

the aluminum bar is connected with the first fixing seat through a first bolt hole and is connected with the high-voltage connector through a second bolt hole.

Further, BMS installing support still includes limit baffle, BMS inlays to be located in the BMS installing support.

Furthermore, an extension frame is arranged on the limit baffle;

the BMS mounting bracket is connected with the first fixing seat through the extension frame.

Furthermore, reinforcing ribs are arranged between the extension frames.

Further, the device also comprises a module connecting part;

the module connecting part is located on the other side of the battery box body.

Further, the module connecting part comprises a module connecting aluminum bar and an electric core connecting aluminum bar;

the battery cell connecting aluminum bars are arranged among all battery cells of the battery cell module in the battery box body;

the module is connected aluminium ba one end with the battery box is interior to be kept away from the electricity core of external insulating part one side and is connected aluminium ba, the other end with the second fixing base of battery box opposite side is connected.

The beneficial effects of the utility model reside in that: the battery management unit is arranged in the external box body far away from the battery core, absolute insulation is formed, the high-voltage element is far away from the end plate, the problem that the high-voltage element is short-circuited with a metal conductor when being collided and assembled is effectively solved, and the safety of the battery pack is improved.

Drawings

Fig. 1 is a perspective exploded view of a battery pack structure according to an embodiment of the present invention;

fig. 2 is a side cross-sectional view of a battery pack structure according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a battery management assembly with an external insulation part of a battery pack structure according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a high-voltage connector assembly of an external insulation part of a battery pack structure according to an embodiment of the present invention;

fig. 5 is an internal top view of a battery pack structure according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a BMS and a BMS mounting bracket of a battery pack structure according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of an aluminum row of a high-voltage plug-in assembly of a battery pack structure according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a module connecting portion of a battery pack structure according to an embodiment of the present invention.

Description of the reference symbols: 1. a battery case; 2. mounting grooves; 3. a battery management group; 4. high-voltage connection plug group; 5. a module connecting part; 6. an electric core; 21. a first fixed seat; 31. BMS; 32. a BMS mounting bracket; 321. a limit baffle; 322. an extension frame; 41. a high voltage connector; 42. aluminum bars; 51. the module is connected with the aluminum bar; 52. the battery core is connected with the aluminum bar; 53. a second fixed seat.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, a battery pack structure includes a battery case and an external insulating part;

the external insulation part is positioned on one side of the battery box body, a first fixed seat is arranged on one side of the battery box body, and the external insulation part is connected with the battery box body through the first fixed seat;

From the above description, the beneficial effects of the utility model reside in that: and the battery management unit is arranged in an external box body far away from the battery core to form absolute insulation.

Further, the Battery Management group comprises a BMS (Battery Management System), a BMS mounting bracket;

As can be seen from the above description, the BMS is fixed by the mounting bracket, and the high-voltage element is far away from the end plate, so that the problem of short circuit with the metal conductor when high voltage is collided and assembled is effectively avoided.

As can be seen from the above description, on one hand, an installer can directly bolt and lock the aluminum row from the front side and the rear side of the box body by using a tool; on the other hand, the aluminum bar is formed by adopting the structural shape, so that the space for locking the high-voltage connector in the box body can be reserved, and the installation, replacement and maintenance are convenient.

Further, BMS installing support still includes limit baffle, the BMS inlays to be located in the BMS installing support.

Furthermore, an extension frame is arranged on the limiting baffle;

Furthermore, reinforcing ribs are arranged between the extension frames.

According to the BMS mounting bracket, the frame is attached to the BMS on the inner side of the BMS mounting bracket at least on the left side and the right side, and the space in the middle of the BMS mounting bracket is convenient for accommodating electrical devices on the BMS. The BMS may be directly put into the BMS mounting bracket from the top down and the BMS is further fixed on the mounting bracket by a screw lock. The reinforcing ribs between the extension frames may increase the stability of the BMS mounting bracket.

Further, the device also comprises a module connecting part; the module connecting part is located on the other side of the battery box body.

Further, the module connecting part comprises a module connecting aluminum bar and a battery core connecting aluminum bar;

As can be seen from the above description, the connection aluminum bar can play the role of switching and fixing the battery cell module.

The utility model provides an above-mentioned battery package structure can improve the security of battery package, explains through embodiment mode below:

example one

Referring to fig. 1 and 2, a battery pack structure includes a battery case 1 and an external insulating part;

the external insulation part is positioned on one side of the battery box body 1, a first fixed seat 21 is arranged on one side of the battery box body, and the external insulation part is connected with the battery box body 1 through the first fixed seat 21; the external insulation part comprises a mounting groove 2, a battery management group 3 and a high-voltage plug group 4.

Referring to fig. 3 and 4, the mounting groove 2 is a trapezoidal groove with a wide upper part and a narrow lower part. The battery management group 3 and the high-voltage plug group 4 are fixed in the mounting groove 2;

specifically, the battery management unit is arranged in an external box body far away from the battery core 6, absolute insulation is formed, the high-voltage element is far away from the end plate, and the problem that the high-voltage element is short-circuited with a metal conductor due to collision and assembly is effectively solved.

The battery management group 3 includes a BMS31, a BMS mounting bracket 32; the BMS31 is fixed in the mounting groove 2 by the BMS mounting bracket 32.

Specifically, because mounting groove 2 lower part is darker, and other parts in mounting groove 2 still, the unable fine installation of mounting groove 2 is directly put into to BMS31 fixed, therefore BMS installing support 32 can install BMS31 fixedly, avoids BMS31 and other parts to collide simultaneously.

Referring to FIG. 5, the high-voltage connector assembly 4 includes a high-voltage connector 41 and an aluminum row 42; the high-voltage connectors 41 are locked on the mounting groove 2 through the aluminum row 42, and the high-voltage connector groups 4 are fixed on two sides of the battery management group 3.

Specifically, BMS31 is fixed in the middle part of mounting groove 2, can follow the upper end and put into BMS installing support 32, and the high-pressure plug connector is fixed in both sides, and this overall arrangement is convenient to each independent installation of part and operation such as maintenance change.

Example two

The difference between the present embodiment and the first embodiment is that the structure of the aluminum row 42 is further defined:

referring to fig. 7, the aluminum bar 42 has three bending portions and two bolt holes, the first bending portion and the second bending portion form a step shape, the first bending portion and the third bending portion are connected to two adjacent sides of the second bending portion, the third bending portion is connected to the first bending portion, the first bending portion is provided with a first bolt hole, and the third bending portion is provided with a second bolt hole;

the aluminum bar 42 is bolted to the first fixing seat 21 through the first bolt hole and is bolted to the high-voltage connector 41 through the second bolt hole. On one hand, an installer can directly bolt and lock the aluminum row 42 from the front side and the rear side of the box body by using a tool; on the other hand, the aluminum bar 42 with the structure can reserve a space for locking the high-voltage connector 41 to the box body, and is convenient to install, replace and maintain.

EXAMPLE III

The present embodiment is different from the first embodiment in that the structure of the BMS mounting bracket 32 is further defined:

referring to fig. 6, the BMS mounting bracket 32 further includes a stopper 321, and the bmsx 31 is embedded in the BMS mounting bracket 32.

Specifically, because there may be some electrical parts on the face that BMS31 and BMS installing support 32 laminate, the inboard at least left and right sides (left side, right side, downside three sides are provided with the frame that is higher than the support middle part) of BMS installing support 32 is provided with the frame and laminates with BMS31, and the space at middle part is convenient for the holding of electrical parts on BMS 31.

An extension frame 322 is arranged on the limit baffle 321; the BMS mounting bracket 32 is connected with the first fixing base 21 by the extension brackets 322, and reinforcing ribs are provided between the extension brackets 322.

Specifically, the BMS mounting bracket 32 is provided with a limit stopper 321, the bmsx 31 can be directly put into the BMS mounting bracket 32 from the top down, and the BMS31 is further fixed on the mounting bracket by screw locking. Extend two extension frame 322 from BMS installing support 32's limit baffle 321, two are extended and are equipped with the strengthening rib between the frame 322, can increase BMS installing support 32's degree of stability, set up the mounting hole on the extension frame 322, and the screw will extend the frame 322 lock through the mounting hole and pay on the fixing base of box.

Example four

The difference between the present embodiment and the first embodiment is that the present embodiment further includes a module connecting portion; the module connecting portion is located at the other side of the battery case 1.

Referring to fig. 8, the module connecting portion includes a module connecting aluminum bar 51 and a cell connecting aluminum bar 52; the battery cell connecting aluminum bars 52 are arranged among the battery cells 6 of the battery cell module in the battery box body 1; the module is connected aluminium bar 51 one end and is connected with the electric core connection aluminium bar 52 of keeping away from external insulating part one side in the battery box 1, and the other end is connected with the second fixing base 53 of battery box 1 opposite side.

Specifically, because there are a plurality of modules in this embodiment, the modules need to be connected, so the aluminum bar of one of the modules and the module connection aluminum bar 51 are locked on the box body through bolts, which plays a role in switching on one hand and also plays a role in fixing on the other hand.

To sum up, the utility model provides a pair of battery package structure through setting up the battery management unit at the external box of keeping away from electric core, forms absolute insulation, makes high-voltage element keep away from the end plate, has effectively avoided high-voltage element to meet the problem that collision and assembly appear and metallic conductor short circuit, improves the security of battery package.

It should be noted that, for the sake of simplicity, the above-mentioned embodiments of the method are described as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the described order of actions, because some steps can be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that acts and modules are not necessarily required to practice the invention.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A battery pack structure is characterized by comprising a battery box body and an external insulating part;

2. The battery pack structure of claim 1, wherein: the mounting groove is a trapezoidal groove with a wide upper part and a narrow lower part.

3. The battery pack structure of claim 1, wherein: the high-voltage plug-in groups are fixed on two sides of the battery management group.

4. The battery pack structure of claim 1, wherein: the battery management group comprises a BMS and a BMS mounting bracket;

5. The battery pack structure of claim 4, wherein:

the aluminum bar is provided with three bending parts and two bolt holes, the first bending part and the second bending part form a step shape, the first bending part and the third bending part are connected with two adjacent side edges of the second bending part, the third bending part is connected with the first bending part, the first bending part is provided with a first bolt hole, and the third bending part is provided with a second bolt hole;

6. The battery pack structure of claim 4, wherein: BMS installing support still includes limit baffle, BMS inlays to be located in the BMS installing support.

7. The battery pack structure of claim 6, wherein: the limiting baffle is provided with an extending frame;

8. The battery pack structure of claim 7, wherein: and reinforcing ribs are arranged between the extension frames.

9. The battery pack structure of claim 1, wherein: the module connecting part is also included; the module connecting part is positioned on the other side of the battery box body.

10. The battery pack structure of claim 9, wherein: the module connecting part comprises a module connecting aluminum bar and a battery core connecting aluminum bar;

the module is connected aluminium ba one end with the battery cell connection aluminium ba that keeps away from external insulating part one side in the battery box is connected, the other end with the second fixing base of battery box opposite side is connected.