Battery module protection device

Abstract

The utility model relates to the technical field of battery module accessories, and particularly discloses a battery module protection device which comprises a protection armor plate arranged at the bottom of an automobile body, and the protection armor plate comprises a battery protection plate and a motor protection plate detachably connected with the battery protection plate. The motor protection plate is detachably connected with the bottom of the automobile body; a containing groove is fixedly connected to the side, close to the automobile body, of the battery protection plate, contact sponge is fixedly connected to the inner wall of the containing groove, a protection sponge set is arranged on the side, close to the battery module, of the bottom of the containing groove, and the containing groove is detachably connected with the side wall of the automobile body. The device solves the problem of abnormal sound of a traditional battery module protection device.

Description

Technical Field

[0001] The present application relates to the technical field of battery module accessories, and specifically discloses a battery module protection device. Background Art

[0002] In recent years, with the development of new energy vehicles and energy storage equipment, lithium-ion batteries have been widely used, and lithium-ion batteries are also constantly developing towards high energy density and large capacity, but at the same time, they are also accompanied by the continuous occurrence of safety accidents such as deflagration or explosion;

[0003] As we all know, the current new energy batteries are generally divided into ternary lithium batteries and lithium iron phosphate batteries. Lithium iron phosphate batteries are more stable, and ternary lithium batteries have higher unit density, but they are not as stable as lithium iron phosphate batteries.

[0004] With the development of technology, various car companies are promoting their own CTB technology, namely battery-body integration technology, which directly installs the battery module at the bottom of the vehicle body floor. After the battery-body integration, the stronger crossbeam can simplify the structural design of the vehicle body sill beam, reduce the weight of the vehicle, and greatly improve the safety performance;

[0005] However, the problem is that the battery module is directly installed at the bottom of the vehicle body floor. For some low-lying models, the battery module is easily scratched. This kind of scratch is okay for lithium iron phosphate batteries, because lithium iron phosphate batteries are stable enough. However, for ternary lithium batteries, there is a risk of uncontrolled fire. At present, the response method of most car companies is to thread a plastic baffle on the bottom of the vehicle body between the battery module and the ground. This method is desirable and conforms to the cost-effective principle of industrial production.

[0006] However, since there is more or less a certain gap between the battery module and the plastic baffle, the vehicle body will make abnormal noises under some special operating conditions, such as high-speed turning and bumpy roads. In addition, the plastic baffle is weathered during use. Therefore, there are certain technical problems in using the plastic baffle as a battery module protection device. In view of this, the inventor proposes a battery module protection device. Utility Model Content

[0007] The utility model aims to solve the problem of abnormal noise in the traditional battery module protection device.

[0008] In order to achieve the above purpose, the utility model provides the following basic solutions

[0009] A battery module protection device comprises a protective armor plate arranged at the bottom of a vehicle body, the protective armor plate comprises a battery protection plate and a motor protection plate detachably connected to the battery protection plate, and the motor protection plate is detachably connected to the bottom of the vehicle body;

[0010] The battery protection plate is fixedly connected to a receiving groove on one side close to the automobile body, a contact sponge is fixedly connected to the inner wall of the receiving groove, a protective sponge group is provided on the bottom of the receiving groove close to the battery module side, and the receiving groove is detachably connected to the side wall of the automobile body.

[0011] The principles and effects of this basic solution are:

[0012] 1. Compared with the prior art, the device has a simple structure and an ingenious design. The device is a car battery module protection device, including a battery protection board and a motor protection board. It can be applied to CTB models and can effectively protect the battery and motor of the car.

[0013] 2. Compared with the existing technology, it adopts non-destructive installation, has the characteristics of simple installation and convenient disassembly, and does not affect the overall structure of the vehicle chassis. Compared with the traditional plastic motor protection plate, the cost increase is within a controllable range, but the protection capability is greatly improved.

[0014] 3. Compared with the prior art, the device adopts a detachable connection on the motor protection board and the battery protection board, and fixes the battery protection board by fixing the motor protection board. The battery protection board can be reasonably disassembled by disassembling the motor protection board, making the installation and disassembly of the battery protection board simpler and more convenient.

[0015] 4. Compared with the prior art, a battery protection plate is fixedly connected to a receiving groove on one side close to the automobile body, a contact sponge is fixedly connected to the inner wall of the receiving groove, and a protective sponge group is provided at the bottom of the receiving groove close to the battery module side. A contact sponge and a protective sponge group are provided to solve the gap problem between the traditional plastic protection plate and the bottom of the automobile body, thereby compensating for this gap problem and ultimately solving the problem of abnormal noise in the traditional battery module protection device.

[0016] 5. Compared with the prior art, although the CTB body integration technology is adopted to protect the battery module by utilizing the strength of the body, in order to protect the battery module, this case further provides a receiving groove, so that the part of the body carrying the battery module is completely protected by the receiving groove, which can further improve the strength of the battery module.

[0017] Furthermore, plug blocks are provided at both ends of the battery protection board, and slots are provided at positions corresponding to the slots of the motor protection board, and the slots are detachably connected to the plug blocks, thereby realizing detachable connection between the motor protection board and the battery protection board.

[0018] Furthermore, threaded holes are arranged around the motor protection plate, screws are threadedly connected to the threaded holes, and the screws are connected to the bottom of the automobile body.

[0019] Furthermore, the battery protection plate and the motor protection plate are both metal plates, and the metal plates are stainless steel plates. The metal plates are used instead of traditional plastic plates, which has a longer service life.

[0020] Furthermore, connection holes are provided around the receiving groove, and the connection holes are used to connect the receiving groove with the automobile body outside the battery module.

[0021] Furthermore, the protective sponge group includes connecting glue, shock-absorbing sponge and fire-proof sponge from the inside to the outside.

[0022] Furthermore, the shock-absorbing sponge is specifically a high-resilience shock-proof sponge, and the material of the fire-proof sponge is polyurethane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a battery module protection device proposed in an embodiment of the present application is shown;

[0025] Figure 2 A schematic plan view of a battery module protection device proposed in an embodiment of the present application is shown;

[0026] Figure 3 A schematic structural diagram of a protective sponge group in a battery module protection device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] The figure marks in the drawings of the specification include: automobile body 1, battery module 2, motor protection plate 3, threaded hole 4, battery protection plate 5, accommodating groove 6, connecting hole 7, plug block 8, contact sponge 9, connecting glue 10, shock-absorbing sponge 11, and fire-proof sponge 12.

[0029] Implementation example Figure 1 , Figure 2 and Figure 3 As shown:

[0030] A battery module protection device, comprising a protective armor plate arranged at the bottom of a car body 1, the protective armor plate comprising a battery protection plate 5 and a motor protection plate 3 detachably connected to the battery protection plate 5, the motor protection plate 3 being detachably connected to the bottom of the car body 1;

[0031] Specifically: plug blocks 8 are provided at both ends of the battery protection board 5, and slots are provided at positions corresponding to the slots on the motor protection board 3, and the slots are detachably connected to the plug blocks 8.

[0032] The purpose is that the battery protection board 5 can be naturally disassembled by disassembling the motor protection board 3, and the installation of the motor protection board 3 can correspond to the installation of the battery protection board 5, so that the whole device is convenient to install and disassemble. Figure 1 and Figure 2 As shown, threaded holes 4 are provided around the motor protection plate 3, screws are connected to the inner threads of the threaded holes 4, and the screws are connected to the bottom of the automobile body 1. The battery protection plate 5 and the motor protection plate 3 are both metal plates, and the metal plates are stainless steel plates.

[0033] A receiving groove 6 is fixedly connected to the upper side of the battery protection plate 5 near the automobile body 1, and a contact sponge 9 is fixedly connected to the inner wall of the receiving groove 6. A protective sponge group is provided at the bottom of the receiving groove 6 near the battery module 2. The receiving groove 6 is detachably connected to the side wall of the automobile body 1, and connecting holes 7 are provided around the receiving groove 6. The connecting holes 7 are used to connect the receiving groove 6 to the automobile body 1 outside the battery module 2.

[0034] The automobile body 1 and the battery module 2 are both wrapped by the accommodating groove 6. The purpose of adopting the form of wrapping with the accommodating groove 6 is: although the CTB body integration technology is adopted and the strength of the body is used to protect the battery module 2, in this case, in order to protect the battery module 2, a accommodating groove 6 is provided, and the part of the body carrying the battery module 2 is completely protected by the accommodating groove 6, which can further improve the strength of the battery module 2.

[0035] The protective sponge group includes, from the inside to the outside, a connecting glue 10, a shock-absorbing sponge 11 and a fire-proof sponge 12. The shock-absorbing sponge 11 is specifically a high-resilience shock-proof sponge, and the material of the fire-proof sponge 12 is polyurethane.

[0036] The bottom of the battery module 2 is in contact with the protective sponge group. The connecting glue 10 is used to ensure the connectivity of the shock-absorbing sponge 11 and the fire-proof sponge 12. The shock-absorbing sponge 11 is used to reduce the metal resonance phenomenon. The fire-proof sponge 12 can slow down the fire when the battery module 2 catches fire accidentally. The overall design of the protective sponge group is to avoid the problem of gap between the traditional plastic protective plate and the traditional CTB body integration of the battery module 2. The protective sponge group is used to fill the gap, thereby reducing or alleviating the problem of abnormal noise in the traditional battery module 2 protection device.

[0037] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A battery module protection device, characterized in that: It includes a protective armor plate arranged at the bottom of the automobile body, the protective armor plate includes a battery protection plate and a motor protection plate detachably connected to the battery protection plate, and the motor protection plate is detachably connected to the bottom of the automobile body; The battery protection plate is fixedly connected to a receiving groove on one side close to the automobile body, a contact sponge is fixedly connected to the inner wall of the receiving groove, a protective sponge group is provided on the bottom of the receiving groove close to the battery module side, and the receiving groove is detachably connected to the side wall of the automobile body.

2. A battery module protection device according to claim 1, characterized in that: Insert blocks are arranged at both ends of the battery protection board, and slots are opened at positions corresponding to the slots on the motor protection board, and the slots are detachably connected to the insert blocks.

3. A battery module protection device according to claim 2, characterized in that: The motor protection plate is provided with threaded holes around its periphery, the threaded holes are threadedly connected with screws, and the screws are connected to the bottom of the automobile body.

4. A battery module protection device according to claim 2 or 3, characterized in that: The battery protection plate and the motor protection plate are both metal plates, and the metal plates are stainless steel plates.

5. A battery module protection device according to claim 1, characterized in that: The accommodating groove is provided with connecting holes around it, and the connecting holes are used to connect the accommodating groove with the automobile body outside the battery module.

6. A battery module protection device according to claim 1, characterized in that: The protective sponge group includes connecting glue, shock-absorbing sponge and fireproof sponge from inside to outside.

7. A battery module protection device according to claim 6, characterized in that: The shock-absorbing sponge is specifically a high-resilience shock-proof sponge, and the material of the fire-proof sponge is polyurethane.

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