CN219133839U

CN219133839U - Battery pack of vehicle and vehicle

Info

Publication number: CN219133839U
Application number: CN202320284333.6U
Authority: CN
Inventors: 卞伟勇; 郭永兴; 章驰威
Original assignee: Jiangsu Yaoning New Energy Innovation Technology Co ltd
Current assignee: Jiangsu Yaoning New Energy Innovation Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-06
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a battery pack of a vehicle, which at least comprises: the battery box body is arranged on a chassis frame of the vehicle; the maintenance hole is arranged on the battery box body and is exposed outside the vehicle body; the maintenance cover body is detachably arranged in the maintenance hole; and the battery management device is arranged in the battery box body and is fixed on the maintenance cover body. The utility model provides a battery pack of a vehicle and the vehicle, which can improve the maintenance convenience and safety of the battery pack.

Description

Battery pack of vehicle and vehicle

Technical Field

The utility model relates to the field of lithium batteries, in particular to a battery pack of a vehicle and the vehicle.

Background

In a new energy vehicle, a power battery pack is composed of a large number of unit batteries. The structural design of the power battery pack covers multiple aspects of electricity, heat/flow, machines and the like, and the integrated design is needed. In a new energy vehicle, a battery pack is enclosed inside a vehicle body, and a battery management system is installed inside the battery pack.

The battery management system requires periodic maintenance. In the regular maintenance, a plurality of components are also required to be removed to remove the battery management system from the vehicle body for maintenance, so that the maintenance of the battery management system is difficult.

Disclosure of Invention

The utility model aims to provide a battery pack of a vehicle and the vehicle, which can improve the maintenance convenience and safety of the battery pack.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model provides a battery pack of a vehicle, at least comprising:

a battery box body mounted on a chassis frame of the vehicle;

the maintenance hole is arranged on the battery box body and is exposed outside the vehicle body of the vehicle;

the maintenance cover body is detachably arranged in the maintenance hole; and

and the battery management device is arranged in the battery box body and is fixed on the maintenance cover body.

In one embodiment of the present utility model, the maintenance cover has an area larger than an area of the battery management device.

In one embodiment of the utility model, the battery box comprises a lower box body, and the lower box body is detachably mounted on the chassis frame.

In an embodiment of the present utility model, a partition plate is fixed in the lower case, and divides the lower case into an electrical case and a battery cell case.

In one embodiment of the utility model, the electrical box is internally provided with electrical components and the battery management device.

In one embodiment of the utility model, the service hole is provided at the bottom of the electrical cabinet.

In an embodiment of the utility model, the maintenance cover body comprises a cover plate, and the cover plate is embedded and fixed in the maintenance hole.

In one embodiment of the present utility model, a limiting frame is disposed on the cover plate, and the battery management device is mounted in the limiting frame.

In an embodiment of the utility model, the maintenance cover body comprises a sealing gasket, and the sealing gasket is sleeved outside the limiting frame.

The present utility model provides a vehicle comprising a battery pack of a vehicle as defined in any one of the above.

As described above, the present utility model provides a battery pack for a vehicle and a vehicle, which can remove an electric part without disassembling the battery pack when the electric part fails inside the battery pack, and then replace the electric part. The battery pack of the vehicle can be replaced and maintained by lifting the vehicle and disassembling the maintenance cover body without disassembling the chassis and various parts of the vehicle, the disassembling and maintenance process is simple and convenient, the air tightness of the battery pack can be ensured, the maintenance safety performance is high, and the safety of the battery pack can be improved.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view illustrating a structure of a battery pack according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a lower case according to an embodiment of the utility model.

Fig. 3 is a schematic structural view of a chassis frame according to an embodiment of the present utility model.

Fig. 4 is a schematic top view of a partition according to an embodiment of the utility model.

Fig. 5 is a schematic structural view of a maintenance cover according to an embodiment of the utility model.

In the figure: 1. a battery pack; 10. a battery case; 100. a lower box body; 101. a maintenance hole; 102. a first separator; 103. an electric cabinet; 104. a cell box; 1041. a second separator; 200. an electric component 200; 201. a battery management device; 300. a battery cell; 400. an upper case cover; 20. maintaining the cover body; 21. a cover plate; 22. a limit frame; 221. a mounting groove; 23. a sealing gasket; 30. a chassis frame; 31. a stiffening beam; 32. and (5) positioning the plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 3, in a new energy vehicle, a battery management system (BatteryManagement System, BMS) may be used to intelligently manage and maintain each battery cell, prevent the battery from being overcharged and overdischarged, extend the service life of the battery, and monitor the state of the battery. The battery management system comprises a battery management unit, a control module, a display module, a wireless communication module, electrical equipment, a battery pack for supplying power to the electrical equipment, an acquisition module for acquiring battery information of the battery pack and the like. The battery management unit is connected with the wireless communication module and the display module respectively through communication interfaces, the output end of the acquisition module is connected with the input end of the battery management unit, the output end of the battery management unit is connected with the input end of the control module, the battery management unit is connected with the battery pack and the electrical equipment respectively, and the battery management unit is connected with the server end through the wireless communication module. Multiple modules, in a battery management system may be packaged as a unitary battery management device 201. The battery management device 201 is mounted in a battery pack.

Referring to fig. 1 to 3, the present utility model provides a battery pack 1 for a vehicle, the battery pack 1 including a battery case 10, a maintenance cover 20, and a battery management device 201. Wherein the battery case 10 is mounted on a chassis frame 30 of the vehicle. The battery case 10 is provided with a maintenance hole 101, and the maintenance hole 101 is exposed to the outside of the vehicle body. Wherein, the maintenance cover 20 is detachably installed in the maintenance hole 101. Wherein, the maintenance cover 20 is fixed with a maintenance battery management device 201, and the battery management device 201 is installed in the battery case 10. In the present embodiment, various electrical devices and battery cell modules are mounted in the battery case 10. The battery management device 201 may be connected to the electrical equipment and cell modules through communication ports and communication harnesses. When the battery management device 201 needs to be maintained, the vehicle can be jacked up by the jacking equipment, and then the maintenance cover 20 positioned at the bottom of the vehicle is detached, and the battery management device 201 can be detached from the battery box 10 and the vehicle body at the same time of detaching the maintenance cover 20. The battery management device 201 can be used for maintenance on the basis of not disassembling other devices of the vehicle, so that not only is the maintenance efficiency high, but also the vehicle battery core is not affected, and the electricity is subjected to water vapor interference in the maintenance process, so that the maintenance safety is high.

Referring to fig. 1 to 3, in an embodiment of the present utility model, a battery case 10 includes a lower case 100 and an upper case cover 400, wherein the lower case 100 is detachably mounted on a chassis frame 30, and the upper case cover 400 is detachably coupled to the lower case 100. In the present embodiment, the lower case 100 is embedded in the chassis frame 30. For example, the chassis frame 30 may be square, the chassis frame 30 is fixed with a reinforcing beam 31, and a positioning plate 32 is provided at a side of the chassis frame 30. Wherein the chassis frame 30, the reinforcement beam 31, and the positioning plate 32 are detachably connected with the battery case 10. In the present embodiment, the chassis frame 30 and the battery case 10 may be detachably coupled by a coupling member such as a bolt, a screw, and a rivet. In the present embodiment, the battery case 10 and the chassis frame 30 may be connected by a plurality of connection members. Wherein the plurality of connectors includes a first connector and a second connector. Wherein the first connector connects the lower case 100 and the upper case cover 400, and the second connector may connect the chassis frame 30, the lower case 100 and the upper case cover 400. In the present embodiment, the maintenance hole 101 is provided on the lower case 100, and after the battery case 10 and the chassis frame 30 are connected, the maintenance hole 101 is located in the square hole of the chassis frame 30. After the chassis frame 30 is mounted to the vehicle body, the service hole 10 is exposed to the outside of the vehicle body. The present utility model is not limited in size and shape to the lower case 100 and the upper case cover 400. In the present embodiment, the lower case 100 may have a box shape and the upper case cover 400 may have a plate shape. In other embodiments of the present utility model, the upper case cover 400 may be box-shaped.

Referring to fig. 1, 4 and 5, in an embodiment of the utility model, a first partition 102 is fixed in a lower case 100, and the first partition 102 divides the lower case into an electrical case 103 and a cell case 104. In the present embodiment, the electrical component 200 is installed in the electrical box 103, and the battery cell box 104 is installed with the battery cell and/or the battery module formed by stacking the battery cells. The electrical component 200 includes components such as a battery management device 201, electrical components, connectors, and high and low voltage harnesses. Among the electrical components are relays, contactors, fuses, sensors and pre-charge resistors, etc. In the present embodiment, the top surface of the first partition 102 is flush with the top surface of the lower case 100, and when the upper case cover 400 is fixed, the upper case cover 400 and the first partition 102 may be connected with a connection member such as a bolt screw. A plurality of second partitions 1041 may be fixed in the cell box 104, and the second partitions 1041 divide the cell box 104 into, for example, a plurality of compartments, and in this embodiment, the second partitions 1041 divide the cell box 104 into, for example, 2 compartments. Wherein, the top surface of the second partition 1041 is flush with the top surface of the first partition 102, and the second partition 1041 and the upper case cover 400 may be detachably connected by a connection member such as a bolt and a screw. The first separator 102 may isolate the electrical compartment 103 from the cell compartment 104 to ensure maintenance of the battery management device 201. In this embodiment, a plurality of battery cells and/or battery modules are mounted in the battery cell compartment 104. Whether the power battery can well fix the position of the battery core 300 and protect the battery core from deformation with the performance being damaged, how to meet the requirements of current carrying performance, how to meet the control of the temperature of the battery core 300, whether the battery can be powered off when serious abnormality occurs, whether the transmission of thermal runaway can be avoided, and the like are all criteria for judging the quality of the power battery module. Therefore, the battery cell 300 is fixed and provided with a sealing structure by the case plate of the battery case 10, so that a part of the electric components 200 and the battery cell 300 are separated to facilitate good operation of the battery pack 1.

Referring to fig. 1, 4 and 5, in an embodiment of the present utility model, a maintenance hole 101 is provided at the bottom of an electrical cabinet 103. In the present embodiment, the width of the service hole 101 is larger than the width of the electric cabinet 103. The maintenance hole 101 is provided with a cover plate 21, and the cover plate 21 closes the maintenance hole 101 in the maintenance hole 101. When the low-voltage electric component 200 or the battery management device 201 needs to be maintained, the cover plate 201 can be directly detached, and the electric cabinet 103 can be opened so as to detach the electric component 200. In the present embodiment, the battery management device 201 is fixed to the cover plate 21, and the electrical components may be electrically connected to the battery management device 201 through the harness and the connector port. Wherein the cover 21 is plugged into the service hole 101. In the present embodiment, the cover 21 and the lower case 100 may be coupled by screws or rivets. When the battery management device 201 needs to be repaired, a connector such as a screw or a rivet is removed, and the cover 21 is removed. In this embodiment, explosion-proof valves may be installed in the electrical cabinet 103 and the electrical core cabinet 104 to ensure the tightness of the two cabinets and to improve the safety of the battery pack 1 during operation. The maintenance hole 101 has a small area, the disassembly box has a small area, and the air tightness of the electric box 103 is less affected than the lower box 100 and the chassis 30.

Referring to fig. 1, 4 and 5, in an embodiment of the present utility model, a limiting frame 22 is fixed on the cover 21. The battery management device 201 is mounted on the cover plate 21, and the battery management device 201 is mounted in the stopper frame 22. In the present embodiment, the limiting frame 22 may be square, and the mounting groove 221 is formed between the frame body of the limiting frame 22 and the cover plate 21. The battery management device 201 is mounted in the mounting groove 221, and the frame body of the limiting frame 22 is attached to the outer wall of the battery management device 201 to limit the battery management device 201. In the present embodiment, the battery management device 201 may be connected to the cap plate 21 by a connection member such as a bolt and a screw to fix the battery management device 201. The battery management device 201 can be removed at the same time as the cover 21 is removed.

Referring to fig. 1, 4 and 5, in an embodiment of the utility model, the maintenance cover 20 includes a sealing pad 23, and the sealing pad 23 is sleeved outside the limiting frame 22. Specifically, the gasket 23 is attached to the cover plate 21, and the gasket 23 is attached to the outside of the stopper frame 22. In the present embodiment, the gasket 23 may be ring-shaped, and the shape of the gasket 23 is adapted to the stopper frame 22. A gasket 23 is connected between the cover plate 21 and other components in the lower case 100 to ensure that the cover plate 21 seals the electric cabinet 103. The gasket 23 may be replaced when repairing the battery management device 201 to ensure that the electrical cabinet 103 is always in a good seal. The gasket 23 may be used as a spacer of the connector to ensure the fixing stability of the connector.

The utility model provides a battery pack of a vehicle, which comprises a battery box body, a maintenance hole, a maintenance cover body and a battery management device. Wherein the battery box is mounted on a chassis frame of the vehicle. The maintenance hole is arranged on the battery box body, and the maintenance hole is exposed outside the vehicle body of the vehicle. The maintenance lid detachably installs in the maintenance hole. The battery management device is installed in the battery box body, and the battery management device is fixed on the maintenance cover body. Wherein the area of the maintenance cover body is larger than the area of the battery management device. In this embodiment, the battery case includes a lower case detachably mounted on the chassis frame. A partition board is fixed in the lower box body, and divides the lower box body into an electric box chamber and an electric core box chamber. An electric component and a battery management device are arranged in the electric box. The maintenance hole sets up in the bottom of electric box room. In this embodiment, the maintenance cover includes a cover plate, and the cover plate is embedded and fixed in the maintenance hole. The cover plate is provided with a limiting frame, and the battery management device is fixed on the limiting frame. The maintenance lid includes sealed pad, and sealed pad cup joints in spacing frame outside.

According to the battery pack of the vehicle and the vehicle, when the low-voltage electric component in the battery pack fails, the electric component can be taken out without disassembling the battery pack, and then the low-voltage electric component is replaced. The battery pack of the vehicle can be replaced and maintained by lifting the vehicle and disassembling the maintenance cover body without disassembling the chassis and various parts of the vehicle, the disassembling and maintenance process is simple and convenient, the air tightness of the battery pack can be ensured, the maintenance safety performance is high, and the safety of the battery pack can be improved.

The embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The examples are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A battery pack for a vehicle, comprising at least:

a battery box body mounted on a chassis frame of the vehicle;

the maintenance cover body is detachably arranged in the maintenance hole; and

2. The vehicle battery pack of claim 1, wherein the maintenance cover has an area greater than an area of the battery management device.

3. The vehicle battery pack of claim 1, wherein the battery compartment includes a lower compartment removably mounted to the chassis frame.

4. A vehicle battery pack according to claim 3, wherein a partition is fixed in the lower case, and the partition divides the lower case into an electric case and a battery cell case.

5. The vehicle battery pack of claim 4, wherein the electrical compartment houses electrical components and the battery management device.

6. The vehicle battery pack of claim 4, wherein the service hole is provided at a bottom of the electric box.

7. The vehicle battery pack of claim 1, wherein the service cover includes a cover plate that is secured in the service hole.

8. The vehicle battery pack of claim 7, wherein the cover plate is provided with a stopper frame, and the battery management device is mounted in the stopper frame.

9. The vehicle battery pack of claim 8, wherein the service cover includes a gasket that is sleeved outside the restraint frame.

10. A vehicle comprising a battery pack of a vehicle according to any one of claims 1 to 9.