Explosion-proof battery assembly of new energy automobile

Abstract

The invention provides a new energy automobile explosion-proof battery assembly, and relates to the technical field of new energy batteries, the new energy automobile explosion-proof battery assembly comprises an outer frame, a battery is arranged in the outer frame, a top plate is arranged on the top of the battery, side plates are arranged on the two sides of the battery, and the outer frame is composed of the top plate and the side plates; the connecting assemblies are arranged on the two sides of the outer frames, each connecting assembly at least comprises a connecting sleeve rod and a connecting sleeve ring, and the connecting assemblies are used for connecting the adjacent outer frames to complete multi-battery assembly. According to the battery assembly, through the design of double half-piece isolation pieces of the isolation assembly, only the heat dissipation openings are released to dissipate heat in a normal state, and the half pieces with the anti-explosion isolation pieces are unfolded in an abnormal state to form a physical anti-explosion barrier of the battery; meanwhile, the unhooking assembly triggers the disengaging action by means of the hydro-thermal expansion triggering design, dependence on an electric control system is not needed, battery abnormity can still be responded in time and the abnormal battery can be separated in the circuit failure scene, and other batteries in the battery pack are prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy battery, in particular to a new energy vehicle explosion-proof battery assembly. BACKGROUND

[0002] With the transformation of global energy structure and the promotion of the "double carbon" target, new energy vehicles have become the core direction of the development of the automobile industry, and the safety, endurance and service life of power batteries, as the core power source of new energy vehicles, directly determine the comprehensive performance of the vehicle.

[0003] In the current mainstream power battery (such as lithium ion battery), during the charging and discharging process, affected by material properties, use environment (high temperature, low temperature), charging and discharging rate and aging degree, internal thermal runaway problems are prone to occur, which may cause battery bulging, fire and even explosion, not only threatening the life safety of the driver and passenger, but also restricting the market acceptance of new energy vehicles.

[0004] Although the existing new energy vehicle battery assembly has been equipped with basic protection structure (such as metal shell, cooling fan), there are still obvious technical shortcomings: on the one hand, most battery explosion-proof schemes adopt integrated sealing design, which can block the explosion impact to a certain extent, but sacrifices the cooling efficiency under normal conditions, causing the battery to be in a high temperature environment for a long time, accelerating the aging of the battery and increasing the risk of thermal runaway, on the other hand, most batteries adopt passive explosion-proof scheme, which is difficult to effectively reduce damage in time when the battery state is abnormal. SUMMARY

[0005] The present application aims to solve the shortcomings in the background art and provide a new energy vehicle explosion-proof battery assembly to solve the difficulty of balancing cooling and explosion-proof of existing new energy battery packs and provide an active explosion-proof scheme to reduce damage in abnormal conditions.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme, a new energy vehicle explosion-proof battery assembly, comprising: an outer frame, the outer frame is internally provided with a battery, the top of the battery is provided with a top plate, both sides of the battery are provided with side plates, and the outer frame is composed of the top plate and the side plates; a connecting assembly, the connecting assembly is arranged on both sides of the outer frame, the connecting assembly at least includes a connecting sleeve rod and a connecting sleeve ring, for connecting adjacent outer frames to complete multi-battery assembly; an unhooking assembly, the unhooking assembly is arranged on the top plate, the unhooking assembly at least includes a power pipe, a piston and a fastener, for controlling the automatic unhooking of the connecting assembly; a partition assembly, the partition assembly is arranged on the side plate, the partition assembly at least includes a separation sheet, for wrapping the battery to prevent explosion.

[0007] Further, the connecting assembly comprises connecting sockets provided on both sides of the top plate, and connecting sleeves provided in the connecting sockets.

[0008] Further, the unhooking assembly comprises a power pipe provided in the top plate, water filled in the power pipe, driving pipes provided at both ends of the power pipe, and a communication pipe provided between the power pipe and the driving pipes; a fastener slidingly connected to the connecting socket, the fastener comprising upper and lower clamping plates, the clamping plates being slidingly connected to the connecting sleeves, the connecting sleeve being located between the two clamping plates; a limiting spring provided on the top of the fastener, the top of the limiting spring being connected to the inner wall of the connecting socket; a piston provided in the driving pipe, the top of the piston being connected to the bottom of the fastener; and separation springs provided on both sides of the top plate.

[0009] Further, the partition assembly comprises accommodating cavities provided on both sides of the side plate, driving motors provided in the accommodating cavities, and winding rods connected to the driving motors; an isolation sheet provided between the two winding rods; and a trigger block provided on the top of the connecting socket, the trigger block being signal connected to the driving motor.

[0010] Further, the top plate and the side plate are provided in a concave shape.

[0011] Further, the connecting assembly further comprises a foolproof opening provided on one side of the top plate, and a foolproof block provided on the other side of the top plate, the foolproof opening and the foolproof block being clamped with each other.

[0012] Further, a limiting groove is provided on the inner wall of the connecting socket, and a limiting block is provided on one side of the fastener, the limiting block being slidingly connected to the limiting groove.

[0013] Further, the isolation sheet is divided into two halves, one half of the isolation sheet being provided with an explosion-proof isolation sheet, and the other half of the isolation sheet being provided with a heat dissipation opening.

[0014] Further, a plurality of traction strips are provided in the heat dissipation opening, and the plurality of traction strips are equidistantly distributed.

[0015] The new energy automobile explosion-proof battery assembly has the following beneficial effects: The application has the advantages that through the "double half-piece isolation piece" design of the partition assembly, only the heat dissipation with the heat dissipation port is released in the normal state, and the half piece with the explosion-proof isolation piece is unfolded to form a physical explosion-proof barrier of the battery in the abnormal state; meanwhile, the unhooking assembly is triggered to separate by using the "hydrothermal expansion trigger" design, does not need to rely on the electric control system, and can still respond to the battery abnormality and separate the abnormal battery in time in the circuit failure scene, and prevent damage to the remaining batteries in the group. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application.

[0017] Figure 2 It is a sectional view of the overall structure of the application.

[0018] Figure 3 It is a schematic diagram of the use of the isolation piece of the application.

[0019] Figure 4 It is a front view of the overall structure of the application.

[0020] Figure 5 It is a schematic diagram of the fastener structure of the application.

[0021] Figure 6 It is a schematic diagram of the isolation piece structure of the application.

[0022] Figure 7 It is a schematic diagram of the multi-main frame connection of the application.

[0023] Figure 8 It is an enlarged schematic diagram of A in the application. Figure 2

[0024] Figures 1-8 In the application: 100 - outer frame; 110 - battery; 120 - top plate; 130 - side plate; 200 - connecting assembly; 210 - connecting bayonet; 211 - connecting sleeve rod; 220 - connecting sleeve ring; 230 - foolproof opening; 231 - foolproof block; 300 - unhooking assembly; 310 - power pipe; 311 - communication pipe; 320 - drive pipe; 321 - piston; 330 - fastener; 331 - clamping plate; 332 - movable opening; 333 - limiting block; 334 - limiting spring; 340 - limiting groove; 350 - separation spring; 400 - partition assembly; 410 - containing cavity; 411 - drive motor; 412 - winding rod; 420 - isolation piece; 421 - explosion-proof isolation piece; 430 - heat dissipation port; 431 - traction strip; 440 - trigger block. DETAILED DESCRIPTION

[0025] ​The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] This application provides an explosion-proof battery assembly for new energy vehicles. This assembly utilizes a "double half-cell separator" design in its partition component. Under normal conditions, only the half-cell with heat dissipation vents is released for heat dissipation, while in abnormal conditions, the half-cell with the explosion-proof separator unfolds, forming a physical explosion-proof barrier for the battery. Simultaneously, the release component employs a "hydrothermal expansion trigger" design to initiate the release action, eliminating reliance on the electronic control system. Even in circuit failure scenarios, it can promptly respond to battery anomalies and separate the faulty battery, preventing damage to other batteries in the assembly. The following provides a detailed description of this explosion-proof battery assembly for new energy vehicles. It should be noted that the order of description in the following embodiments is not intended to limit the preferred order of the embodiments.

[0028] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Please see Figures 1-8 middle Example 1 This embodiment provides an explosion-proof battery assembly for new energy vehicles, comprising: an outer frame 100, a battery 110 disposed inside the outer frame 100, a top plate 120 on the top of the battery 110, and side plates 130 on both sides of the battery 110; the outer frame 100 being composed of the top plate 120 and the side plates 130; a connecting assembly 200 disposed on both sides of the outer frame 100, the connecting assembly including at least a connecting sleeve 211 and a connecting collar 220, used to connect adjacent outer frames 100 to complete the assembly of multiple batteries 110; a release assembly 300 disposed on the top plate 120, the release assembly including at least a power pipe 310, a piston 321 and a fastener 330, used to control the automatic release of the connecting assembly 200; and a partition assembly 400 disposed on the side plates 130, the partition assembly including at least a partition sheet 420, used to enclose the battery 110 for explosion protection. The outer frame 100 is composed of a U-shaped top plate 120 and a side plate 130. The battery 110 is first embedded inside the outer frame 100, and the top plate 120 and the side plate 130 form a preliminary wrapping and protection for the battery 110. When multiple batteries need to be assembled, the adjacent outer frames 100 are connected and fixed by the connecting components 200 on both sides of the outer frame 100, using the cooperation of the connecting sleeve 211 and the connecting collar 220. If the battery 110 malfunctions, such as overheating or bulging, the release assembly 300 on the top plate 120 is activated. Through the linkage control of the power pipe 310 and piston 321, the fastener 330 is activated, causing the connecting assembly 200 to automatically release. At the same time, the partition assembly 400 on the side plate 130 unfolds the isolation plate 420 to wrap the individual malfunctioning battery 110, achieving explosion-proof protection.

[0030] The connecting component 200 includes: connecting slots 210 opened on both sides of the top plate 120, with connecting sleeves 211 inside the connecting slots 210; and connecting collars 220 sleeved on the connecting sleeves 211 between the two outer frames 100. First, pre-set connecting slots 210 on both sides of the top plate 120, and fix connecting sleeves 211 inside the connecting slots 210; when assembling adjacent outer frames 100, align the connecting sleeves 211 of the two outer frames 100, and then put the connecting collar 220 on the two aligned connecting sleeves 211 from the outside. Through the binding effect of the connecting collar 220, the adjacent outer frames 100 are kept in a fixed connection state; when disassembling, simply remove the connecting collar 220 to release the connection of the two connecting sleeves 211 and separate the outer frames 100. The built-in design of the connecting bayonet 210 and the connecting sleeve 211 prevents the exposed connection structure from being damaged, thus improving connection stability; the sleeve-type connection method of the connecting collar 220 is simple to operate, requires no complicated tools, and greatly improves the efficiency of multi-battery assembly and disassembly.

[0031] The unhooking assembly 300 includes: a power pipe 310 located inside the top plate 120, the power pipe 310 being filled with water; drive pipes 320 located at both ends of the power pipe 310, with a connecting pipe 311 between the power pipe 310 and the drive pipe 320; a fastener 330 slidably connected to the connecting slot 210, the fastener 330 consisting of two clamping plates 331, the clamping plates 331 being slidably connected to the connecting sleeve rod 211, and a connecting collar 220 located between the two clamping plates 331; a limiting spring 334 located at the top of the fastener 330, the top of the limiting spring 334 being connected to the inner wall of the connecting slot 210; a piston 321 located inside the drive pipe 320, the top of the piston 321 being connected to the bottom of the fastener 330; and separation springs 350 located on both sides of the top plate 120. Under normal conditions, the water inside the power pipe 310 remains stable, the piston 321 inside the drive pipe 320 is in the initial position, and the fastener 330, under the elastic force of the limiting spring 334, clamps the connecting collar 220 onto the connecting sleeve rod 211 through the upper and lower clamping plates 331, ensuring that the connecting assembly 200 does not come loose. When the battery 110 overheats abnormally, the heat is transferred to the power pipe 310 inside the top plate 120, causing the water inside the pipe to expand due to heat. The water then flows into the drive pipe 320 through the connecting pipe 311, pushing the piston 321 to move upward. The piston 321 drives the fastener 330 to slide upward against the elastic force of the limiting spring 334, causing the clamp 331 to disengage from the connecting collar 220 and releasing the restraint on the connecting collar 220. At the same time, the separation springs 350 on both sides of the top plate 120 release their elastic force, pushing the adjacent outer frames 100 to separate from each other, completing the automatic release. The release mechanism utilizes the thermal expansion properties of water to trigger the release, eliminating the need for additional electronic control components, resulting in a more timely response and high reliability unaffected by circuit failures. The limiting spring 334 ensures that the connecting collar 220 is clamped under normal conditions, while the separation spring 350 assists in the separation of the outer frame, thus improving the release efficiency through a dual function. The clamp-type structure of the fastener 330 provides a more stable restraint on the connecting collar 220, preventing accidental release caused by vehicle bumps.

[0032] The connecting bayonet 210 has a limiting groove 340 on its inner wall, and a limiting block 333 is provided on one side of the fastener 330. The limiting block 333 is slidably connected to the limiting groove 340. The limiting groove 340 is vertically provided on the inner wall of the connecting bayonet 210, and the limiting block 333 is fixed on one side of the fastener 330 to ensure that the size of the limiting block 333 matches the width of the limiting groove 340. When assembling the fastener 330, the limiting block 333 is aligned with the limiting groove 340 and inserted, so that the fastener 330 is slidably connected in the connecting bayonet 210 through the cooperation of the limiting block and the limiting groove. When the unhooking assembly is activated, the piston 321 pushes the fastener 330 to slide up and down, and the limiting block 333 slides synchronously along the limiting groove 340 to limit the sliding direction of the fastener 330 and prevent the fastener 330 from horizontally shifting or rotating.

[0033] The partition assembly 400 includes: receiving cavities 410 opened on both sides of the side plate 130, a drive motor 411 inside the receiving cavity 410, and a winding rod 412 connected to the drive motor 411; an isolation plate 420 disposed between the two winding rods 412; and a trigger block 440 disposed at the top of the connecting bayonet 210, and the trigger block 440 is signal connected to the drive motor 411. Under normal conditions: The partition assembly 400 consists of a half-piece with an explosion-proof partition 421 and a half-piece with a heat dissipation vent 430, both of which are wound up on a winding rod 412 within the receiving cavity 410. The drive motor 411 controls the winding rod 412 to maintain a specific angle, releasing only the half-piece with the heat dissipation vent 430, so that the heat dissipation vent 430 is precisely aligned with the surface of the battery 110. The heat dissipation vent 430 allows air circulation between the battery 110 and the outside environment, ensuring normal heat dissipation requirements. At this time, the half-piece with the explosion-proof partition 421 is still wound up and does not contact the battery.

[0034] When the connecting component 200 is disengaged, the trigger block 440 at the top of the connecting bayonet 210 senses the displacement signal of the fastener 330 and transmits the abnormal signal to the drive motor 411 in the receiving cavity 410. The drive motor 411 starts and drives the winding rod 412 to rotate in the opposite direction. On the one hand, it rewinds the half with the heat dissipation vent 430 into the receiving cavity 410. On the other hand, it releases the half with the explosion-proof partition 421 at the same time, so that the explosion-proof partition 421 gradually unfolds from the side plate 130 and adheres to the surface of the battery 110. After the half with the explosion-proof partition 421 completely covers the battery 110, the drive motor 411 stops working. The explosion-proof partition 421 remains in close contact with the battery, forming a physical explosion-proof barrier to block the shock wave, flame or electrolyte leakage that may be caused by battery abnormality.

[0035] The top plate 120 and the side plate 130 are both designed in a U-shape. The U-shape design effectively increases the surface area of ​​the top plate 120 and the side plate 130, making heat dissipation more effective and avoiding the problem of heat accumulation inside the battery 110.

[0036] The connecting component 200 also includes: a foolproof opening 230 on one side of the top plate 120, and a foolproof block 231 on the other side of the top plate 120. The foolproof opening 230 and the foolproof block 231 are interlocked. The foolproof opening 230 is machined on one side of the top plate 120, and the foolproof block 231 is integrally formed on the other side to ensure that the shape and size of the foolproof opening 230 and the foolproof block 231 are completely matched. When assembling adjacent outer frames 100, if the foolproof block 231 of the top plate of the left outer frame is aligned with the foolproof opening 230 of the top plate of the right outer frame, the foolproof block 231 can be smoothly inserted into the foolproof opening 230. At this time, the connecting sleeve 211 is also aligned synchronously, which facilitates the subsequent installation of the connecting collar 220. If the assembly direction is incorrect, the foolproof block 231 will abut against the surface of the top plate 120 and cannot be interlocked, prompting the operator to adjust the assembly direction.

[0037] The isolation sheet 420 is divided into two halves. One half of the isolation sheet 420 is provided with an explosion-proof isolation sheet 421, and the other half of the isolation sheet 420 is provided with a heat dissipation vent 430. The isolation sheet 420 is designed as two independently controlled halves. The explosion-proof isolation sheet 421 is attached to the inside of one half, and the heat dissipation vents 430 are evenly distributed on the other half. Each half corresponds to a winding rod 412, which is independently driven by a drive motor 411. Under normal conditions, the drive motor 411 controls the winding rod of the half corresponding to the heat dissipation vent 430 to rotate, releasing the half and aligning the heat dissipation vent 430 with the battery 110. At the same time, it controls the winding rod of the half corresponding to the explosion-proof isolation sheet 421 to remain locked, so that the explosion-proof isolation sheet 421 is wound into the receiving cavity 410, and the battery 110 is cooled under normal conditions through the heat dissipation vent 430.

[0038] The heat dissipation vent 430 is equipped with multiple traction bars 431, which are equidistantly distributed among each other. When the battery 110 malfunctions, the drive motor 411 rewinds half of the heat dissipation vent 430, and the traction bars 431 bend and deform synchronously with the spacer, conforming to the curvature of the winding rod 412, ensuring that the half of the heat dissipation vent 430 can be quickly retracted into the receiving cavity 410.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0040] The above provides a detailed description of an explosion-proof battery assembly for new energy vehicles provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An explosion-proof battery assembly for new energy vehicles, characterized in that, include: An outer frame (100) is provided inside the outer frame (100), a battery (110) is provided on the top of the battery (110), a top plate (120) is provided on the top of the battery (110), and side plates (130) are provided on both sides of the battery (110). The outer frame (100) is composed of the top plate (120) and the side plates (130). A connecting component (200) is provided on both sides of the outer frame (100). The connecting component includes at least a connecting sleeve (211) and a connecting collar (220) for connecting adjacent outer frames (100) to complete the assembly of multiple batteries (110). A release assembly (300) is provided on the top plate (120). The release assembly (300) includes at least a power pipe (310), a piston (321), and a fastener (330) for controlling the automatic release of the connecting assembly (200). A partition assembly (400) is disposed on the side plate (130), and the partition assembly (400) includes at least a separator (420) for enclosing the battery (110) to prevent explosion.

2. The explosion-proof battery assembly for new energy vehicles according to claim 1, characterized in that, The connection component (200) includes: Connection slots (210) are provided on both sides of the top plate (120), and a connecting sleeve (211) is provided inside the connection slots (210). A connecting collar (220) is fitted onto the connecting sleeve (211) between the two outer frames (100).

3. The explosion-proof battery assembly for new energy vehicles according to claim 2, characterized in that, The unhooking assembly (300) includes: A power pipe (310) is provided inside the top plate (120), and the power pipe (310) is filled with water; A drive pipe (320) is provided at both ends of the power pipe (310), and a connecting pipe (311) is provided between the power pipe (310) and the drive pipe (320). A fastener (330) is slidably connected to the connecting bayonet (210). The fastener (330) consists of two clamping plates (331), and the clamping plates (331) are slidably connected to the connecting sleeve (211). The connecting collar (220) is located between the two clamping plates (331). A limiting spring (334) is provided on the top of the fastener (330), and the top of the limiting spring (334) is connected to the inner wall of the connecting bayonet (210); A piston (321) is disposed inside the drive tube (320), and the top of the piston (321) is connected to the bottom of the fastener (330); Separation springs (350) are provided on both sides of the top plate (120).

4. The explosion-proof battery assembly for new energy vehicles according to claim 2, characterized in that, The partition assembly (400) includes: The accommodating cavities (410) are opened on both sides of the side plate (130), and the accommodating cavities (410) are equipped with drive motors (411), and the drive motors (411) are connected to winding rods (412). A spacer (420) is provided between the two winding rods (412); A trigger block (440) is provided on the top of the connection bayonet (210), and the trigger block (440) is signal connected to the drive motor (411).

5. The explosion-proof battery assembly for new energy vehicles according to claim 1, characterized in that, Both the top plate (120) and the side plate (130) are arranged in a U-shape.

6. The explosion-proof battery assembly for new energy vehicles according to claim 2, characterized in that, The connecting assembly (200) further includes: a foolproof opening (230) provided on one side of the top plate (120), a foolproof block (231) provided on the other side of the top plate (120), and the foolproof opening (230) and the foolproof block (231) engaging with each other.

7. The explosion-proof battery assembly for new energy vehicles according to claim 3, characterized in that, A limiting groove (340) is provided on the inner wall of the connecting bayonet (210), and a limiting block (333) is provided on one side of the fastener (330), and the limiting block (333) is slidably connected to the limiting groove (340).

8. The explosion-proof battery assembly for new energy vehicles according to claim 4, characterized in that, The isolation plate (420) is divided into two halves. One half of the isolation plate (420) is provided with an explosion-proof partition (421), and the other half of the isolation plate (420) is provided with a heat dissipation vent (430).

9. The explosion-proof battery assembly for new energy vehicles according to claim 8, characterized in that, The heat dissipation vent (430) is provided with multiple traction bars (431), and the multiple traction bars (431) are distributed at equal intervals.

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