A power battery box structure for electric vehicle

Abstract

The utility model discloses a power battery box structure of an electric vehicle, comprising a fixed frame and a partition a installed inside the fixed frame, a plurality of partitions b are fixedly connected equidistantly from front to back near the right side inside the partition a, a battery block is arranged near the left side inside the fixed frame, a plurality of battery groups are arranged equidistantly on the right side of the battery block, a charging port is arranged near the left side on the front end outer wall of the fixed frame, a plurality of the partitions a are arranged inside with wiring harnesses for current to pass through, a plurality of the wiring harnesses are arranged on the left and right end outer walls for transmitting electricity, a plurality of the battery blocks and battery groups are fixedly connected with terminals on the left and right end outer walls for abutting with the connectors for charging operations, a top cover is arranged on the upper side of the fixed frame, and a rubber sleeve, a filling sheet, filling gas and fire extinguishing dust are installed to reduce the spread speed of flame, reduce the harm caused by fire, and thus reduce the risk of fire.

Description

Technical Field

[0001] The utility model belongs to the technical field related to automobile battery boxes, and specifically relates to a power battery box structure of an electric vehicle. Background Art

[0002] The power battery box is usually composed of an integral shell structure. In order to avoid short circuit and mutual interference between battery cells, the battery box usually also includes an isolation structure to effectively isolate and fix the power battery. However, when a fire occurs during the use of the car battery box, the flame generated by the battery combustion cannot be extinguished or slowed down in time, causing the fire to spread, accelerate damage to the vehicle and even endanger personal safety. Utility Model Content

[0003] The utility model aims to provide an electric vehicle power battery box structure to solve the problem that when a fire occurs in the automobile battery box during use, the flame generated by the battery combustion cannot be extinguished or mitigated in time.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric vehicle power battery box structure, comprising a fixed frame and a partition a installed inside the fixed frame;

[0005] A plurality of partitions b are fixedly connected to the interior of the partition a near the right side from front to back at equal distances;

[0006] A battery block is arranged inside the fixing frame near the left side;

[0007] A plurality of battery packs are arranged equidistantly on the right side of the battery block, a charging port is arranged on the front outer wall of the fixing frame near the left side, a plurality of the partitions a are arranged inside with wiring harnesses for current to pass through, a plurality of the wiring harnesses are arranged on the left and right outer walls for transmitting power, a terminal is fixedly connected to the left and right outer walls of the battery block and the battery pack for abutting against the connector for charging operation, and a top cover is arranged on the upper side of the fixing frame;

[0008] A plurality of rubber sleeves are equidistantly arranged on the lower side of the top cover from left to right, fire extinguishing dust is arranged inside the plurality of rubber sleeves, filling gas is arranged inside the plurality of rubber sleeves, and filling pieces are arranged inside the outer walls of the lower ends of the plurality of rubber sleeves.

[0009] Preferably, the outer walls of the lower ends of the plurality of rubber sleeves are provided with nozzles which pass through from top to bottom for adding fire extinguishing dust and filling gas into the rubber sleeves, and the filling pieces and the nozzles are fixedly connected by adhesive.

[0010] Preferably, an extension cover is fixedly connected to the outer wall of the upper end of the top cover, and a baffle is provided on the inner wall of the lower end of the top cover to limit the position of the rubber sleeve.

[0011] Preferably, a plurality of openings are equidistantly provided inside the upper outer wall of the baffle from left to right for the ejected fire extinguishing dust and filling gas to pass through, and the lower outer wall of the baffle is provided with fixing screws b that penetrate upward into the top cover near the left and right sides respectively to limit the position of the baffle.

[0012] Preferably, a downwardly opening threaded hole b is provided between the lower end outer wall of the baffle and the inner part of the upper end inner wall of the top cover for the fixing screw b to pass through, and the filling gas is carbon dioxide gas.

[0013] Preferably, the fire extinguishing dust can be made of materials such as carbonates and silicates, and the plurality of rubber sleeves and the extension covers are fixedly connected by adhesives.

[0014] Preferably, a detector is provided on the right side of the charging port to detect the temperature during charging, and a base is fixedly connected to the outer wall of the lower end of the fixing frame to support the battery pack and the battery block.

[0015] Preferably, a heat dissipation net is provided inside the front end outer wall of the fixing frame, and a plurality of threaded holes a opening upward are provided on the upper end outer walls of the base, the fixing frame and the top cover.

[0016] Preferably, the outer wall of the upper end of the top cover is provided with a plurality of fixing screws a which penetrate downward into the threaded hole a to limit the position of the top cover, and a power-off switch is provided inside the detector.

[0017] Compared with the prior art, the utility model provides an electric vehicle power battery box structure, which has the following beneficial effects:

[0018] By installing rubber sleeves, filling sheets, filling gas and fire extinguishing dust, when the battery pack and battery block inside the fixed frame catch fire, the high temperature of the burning flame will dissolve the filling sheet and the rubber sleeve, and the filling gas and fire extinguishing dust inside the dissolved rubber sleeve will spray out to extinguish the flames emitted by the battery pack and battery block inside the fixed frame. If the fire is large, the spread of the flame will be reduced, reducing the harm caused by the fire, thereby reducing the risk of fire. No human intervention is required, avoiding the possibility of fire extinguishing delays due to human factors, and playing a role in timely fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the structure of a power battery box of an electric vehicle.

[0020] Figure 2 It is a schematic diagram of the partial structure of the partition a area in a top view of the utility model.

[0021] Figure 3 It is a schematic diagram of the partial structure of the extended cover area in a side view of the present invention.

[0022] Figure 4 It is a schematic diagram of the partial structure of the rubber sleeve area in a side view section of the utility model.

[0023] In the figure: 1. base; 2. threaded hole a; 3. heat dissipation net; 4. fixing screw a; 5. fixing frame; 6. top cover; 7. extension cover; 8. battery pack; 9. battery block; 10. partition a; 11. detector; 12. charging port; 13. connector; 14. wiring harness; 15. partition b; 16. terminal; 17. filling gas; 18. rubber sleeve; 19. fire extinguishing dust; 20. through port; 21. baffle; 22. fixing screw b; 23. threaded hole b; 24. filling piece; 25. nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-3 The electric vehicle power battery box structure shown includes a fixing frame 5 and a partition a10 installed inside the fixing frame 5;

[0026] A plurality of partitions b15 are fixedly connected to the inside of the partition a10 near the right side from front to back at equal intervals;

[0027] A battery block 9 is arranged inside the fixing frame 5 near the left side;

[0028] A plurality of battery packs 8 are arranged equidistantly on the right side of the battery block 9, a charging port 12 is arranged near the left side of the front outer wall of the fixing frame 5, a plurality of partitions a10 are provided with wiring harnesses 14 inside for current to pass through, and connectors 13 are arranged on the left and right outer walls of the plurality of wiring harnesses 14 for transmitting power, and terminals 16 are fixedly connected to the left and right outer walls of the battery block 9 and the battery pack 8 for abutting against the connectors 13 for charging operation, and a top cover 6 is arranged on the upper side of the fixing frame 5. When assembling the automobile battery, the battery block 9 and the battery pack 8 are placed on the partitions a10 and b10, respectively. The battery installation is completed by inserting the terminals 16 at the left and right ends of the battery pack 8 and the battery block 9 into the connector 13 inside the partition a15, and then fixing the top cover 6. When the battery is powered on, the charging line and the charging port 12 are connected, and the external charger is inserted into the charging end of the charging line. The power is guided to the inside of the charging port 12 through the charging line, and then the power is shunted through the wiring harness 14, and the power is transmitted to the connector 13 respectively, and then transmitted to the terminal 16 to charge the battery pack 8 and the battery block 9;

[0029] A plurality of rubber sleeves 18 are equidistantly arranged from left to right on the lower side of the top cover 6, and fire extinguishing dust 19 is arranged inside the plurality of rubber sleeves 18, and filling gas 17 is arranged inside the plurality of rubber sleeves 18. A filling piece 24 is arranged inside the outer wall of the lower end of the plurality of rubber sleeves 18. When the battery pack 8 and the battery block 9 inside the fixed frame 5 catch fire, the temperature of the flame is greater than the melting point of the rubber sleeve 18, thereby dissolving the small rubber sleeve 18. After dissolution, the filling gas 17 and the fire extinguishing dust 19 will be sprayed outward to perform a fire extinguishing operation and reduce the speed of the flame spread.

[0030] like Figure 3 and Figure 4 As shown, the lower outer walls of the multiple rubber sleeves 18 are provided with nozzles 25 that pass through from top to bottom. Fire extinguishing dust 19 and filling gas 17 are added to the rubber sleeves 18. The filling piece 24 and the nozzles 25 are fixedly connected with an adhesive. The upper outer wall of the top cover 6 is fixedly connected with the extension cover 7. The lower inner wall of the top cover 6 is provided with a baffle 21 to limit the position of the rubber sleeve 18.

[0031] When the rubber sleeve 18 is filled with the fire extinguishing dust 19 and the filling gas 17 , the dust is added into the rubber sleeve 18 through the nozzle 25 , and then the nozzle 25 is filled with the filling piece 24 through the adhesive to seal the rubber sleeve 18 .

[0032] like Figure 3 and Figure 4As shown, a plurality of openings 20 are equidistantly provided inside the upper outer wall of the baffle 21 from left to right for the ejected fire extinguishing dust 19 and the filling gas 17 to pass through, and a fixing screw b22 penetrating upwardly into the interior of the top cover 6 is provided on the lower outer wall of the baffle 21 and near the left and right sides respectively to limit the position of the baffle 21, and a downwardly opening threaded hole b23 is provided between the lower outer wall of the baffle 21 and the inner wall of the upper end of the top cover 6 for the fixing screw b22 to pass through, the filling gas 17 is carbon dioxide gas, and the fire extinguishing dust 19 can be made of carbonate, silicate and other materials, and a plurality of rubber sleeves 18 and the extension cover 7 are fixedly connected by an adhesive.

[0033] When placing multiple rubber sleeves, first stick the multiple rubber sleeves 18 to the inner wall of the upper end of the extension cover 7, and move the baffle 21 to the lower side of the multiple rubber sleeves 18, and then insert the fixing screw b22 into the threaded hole b23 for rotational threaded connection to limit the position of the baffle 21. After the rubber sleeve 18 is dissolved, the internal filling gas 17 and fire extinguishing dust 19 can be sprayed out through the opening 20 onto the battery pack 8 and the battery block 9.

[0034] like Figure 1 and Figure 2 As shown, a detector 11 is provided on the right side of the charging port 12 to detect the temperature during charging, the lower outer wall of the fixed frame 5 is fixedly connected to the base 1 to support the battery pack 8 and the battery block 9, a heat dissipation net 3 is provided inside the front outer wall of the fixed frame 5, and the upper outer walls of the base 1, the fixed frame 5 and the top cover 6 are all provided with a plurality of threaded holes a2 opening upward.

[0035] During charging, the temperature of the charging port 12 can be detected by the detector 11, and the position of the battery pack 8 and the battery block 9 can be lifted by the base 1 to prevent the battery pack 8 and the battery block 9 from slipping out of the fixed frame 5. During charging and use, heat dissipation can be performed through the heat dissipation net 3.

[0036] like Figure 1 As shown, the outer wall of the upper end of the top cover 6 is provided with a plurality of fixing screws a4 penetrating downwardly into the threaded hole a2 to limit the position of the top cover 6, and a power-off knife is provided inside the detector 11.

[0037] When installing the top cover 6, the fixing screw a4 can be penetrated downward to screw into the threaded hole a2 to limit the position of the top cover 6. When installing the base 1, the external fixing bolt can be inserted into the threaded hole a2 to connect it to the vehicle. When the detector 11 detects that the temperature is too high, it will cut off the power through the power-off switch to temporarily stop the charging operation. After waiting for the temperature to drop, the switch will be retracted to continue charging.

[0038] The implementation principle of this embodiment is as follows: when assembling the automobile battery, the battery block 9 and the battery group 8 are respectively placed in the partition formed by the partition a10 and the partition b15, and the terminals 16 at the left and right ends of the battery group 8 and the battery block 9 are respectively inserted into the connector 13 inside the partition a10 to complete the installation of the battery, and then the top cover 6 is fixed. When the battery is powered on, the charging line and the charging port 12 are connected, and the external charger is inserted into the charging terminal at the end of the charging line. The power is guided to the inside of the charging port 12 through the charging line, and then the power is diverted through the wiring harness 14, and the power is transmitted to the connector 13 respectively, and then transmitted to the terminal 16 to charge the battery group 8 and the battery block 9. When the battery group 8 and the battery block 9 inside the fixing frame 5 catch fire, the temperature of the flame is greater than the melting point of the rubber sleeve 18, thereby dissolving the small rubber sleeve 18. After dissolution, the filling gas 17 and the fire extinguishing dust 19 will be sprayed outward to perform a fire extinguishing operation and reduce the speed of flame spread.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power battery box structure for an electric vehicle, comprising a fixing frame (5) and a partition a (10) installed inside the fixing frame (5); A plurality of partitions b (15) are fixedly connected to the interior of the partition a (10) near the right side at equal intervals from front to back; A battery block (9) is arranged inside the fixing frame (5) near the left side; A plurality of battery packs (8) are arranged equidistantly on the right side of the battery block (9); a charging port (12) is arranged on the front outer wall of the fixing frame (5) near the left side; a plurality of the partitions a (10) are provided with wiring harnesses (14) inside for current to pass through; a plurality of the wiring harnesses (14) are provided with connectors (13) on the left and right outer walls for transmitting power; a terminal (16) is fixedly connected to the left and right outer walls of the battery block (9) and the battery pack (8) for abutting against the connector (13) for charging operation; a top cover (6) is provided on the upper side of the fixing frame (5); Features: A plurality of rubber sleeves (18) are arranged equidistantly from left to right on the lower side of the top cover (6), fire extinguishing dust (19) is arranged inside the plurality of rubber sleeves (18), filling gas (17) is arranged inside the plurality of rubber sleeves (18), and a filling piece (24) is arranged inside the lower end outer wall of the plurality of rubber sleeves (18).

2. The electric vehicle power battery box structure according to claim 1, characterized in that: The lower outer walls of the plurality of rubber sleeves (18) are each provided with a nozzle (25) that passes through from top to bottom. Fire extinguishing dust (19) and filling gas (17) are added into the rubber sleeve (18), and the filling piece (24) and the nozzle (25) are fixedly connected by an adhesive.

3. The electric vehicle power battery box structure according to claim 1, characterized in that: The upper outer wall of the top cover (6) is fixedly connected to an extension cover (7), and the lower inner wall of the top cover (6) is provided with a baffle (21) to limit the position of the rubber sleeve (18).

4. The electric vehicle power battery box structure according to claim 3, characterized in that: The upper outer wall of the baffle (21) is provided with a plurality of openings (20) equidistantly from left to right for the ejected fire extinguishing dust (19) and filling gas (17) to pass through, and the lower outer wall of the baffle (21) is provided with fixing screws b (22) penetrating upwards into the interior of the top cover (6) near the left and right sides respectively to limit the position of the baffle (21).

5. The electric vehicle power battery box structure according to claim 3, characterized in that: A threaded hole b (23) opening downward is provided between the lower outer wall of the baffle (21) and the inner wall of the upper inner wall of the top cover (6) for the fixing screw b (22) to pass through, and the filling gas (17) is carbon dioxide gas.

6. The electric vehicle power battery box structure according to claim 1, characterized in that: The fire extinguishing dust (19) can be made of carbonate or silicate materials, and the plurality of rubber sleeves (18) and the extension cover (7) are fixedly connected by an adhesive.

7. The electric vehicle power battery box structure according to claim 1, characterized in that: A detector (11) is provided on the right side of the charging port (12) to detect the temperature during charging, and a base (1) is fixedly connected to the outer wall of the lower end of the fixing frame (5) to support the battery pack (8) and the battery block (9).

8. The electric vehicle power battery box structure according to claim 7, characterized in that: A heat dissipation net (3) is provided inside the front end outer wall of the fixing frame (5), and a plurality of threaded holes a (2) opening upward are provided on the upper end outer walls of the base (1), the fixing frame (5) and the top cover (6).

9. The electric vehicle power battery box structure according to claim 8, characterized in that: The upper outer wall of the top cover (6) is provided with a plurality of fixing screws a (4) penetrating downward into the threaded hole a (2) to limit the position of the top cover (6), and a power-off switch is provided inside the detector (11).

Images