Battery pack connecting structure and vehicle

Abstract

The embodiment of the invention provides a battery pack connecting structure and a vehicle. Relates to the technical field of vehicles. The battery pack connecting structure comprises a battery pack, a first connecting assembly, a second connecting assembly and a control assembly, wherein a mounting beam is arranged on the battery pack; the first connecting assembly is used for being connected with a vehicle body, the second connecting assembly comprises a connecting piece and an adjusting piece, the connecting piece is connected with the mounting beam, the adjusting piece is arranged on the connecting piece, and the adjusting piece is detachably connected with the first connecting assembly so that the battery pack can be connected to the bottom of the vehicle body; the control assembly penetrates through the connecting piece to be inserted into the adjusting piece so as to fix the adjusting piece, and the control assembly is configured to be separated from the adjusting piece when the battery pack is subjected to thermal runaway, so that the battery pack is separated from the automobile body. According to the battery pack connecting structure, the harm of the battery pack to people in the automobile during thermal runaway is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a battery pack connection structure and a vehicle. Background Technology

[0002] Against the backdrop of energy transition and increasing environmental awareness, electric vehicles have emerged as a prominent option. They convert electrical energy into kinetic energy through an electric motor, enabling the vehicle to move.

[0003] In related technologies, battery packs are typically installed at the bottom of the vehicle. This makes full use of the space under the vehicle chassis and avoids encroaching on the interior passenger space and trunk space. The connection between the battery pack and the vehicle body is usually achieved using bolts, which secure the battery pack to the bottom of the vehicle body with multiple bolts.

[0004] However, in the event of thermal runaway of the battery pack, the internal temperature of the battery pack rises sharply, which can easily lead to the battery pack catching fire or even exploding, seriously endangering the safety of people in the car. Summary of the Invention

[0005] This application provides a battery pack connection structure and a vehicle to solve the problem that the safety of people in a vehicle will be seriously endangered when the battery pack is in a thermal runaway state.

[0006] In a first aspect, embodiments of this application provide a battery pack connection structure, including:

[0007] A battery pack, on which a mounting beam is provided;

[0008] A first connecting component, used for connecting to the vehicle body.

[0009] The second connecting assembly includes a connector and an adjusting member. The connector is connected to the mounting beam, and the adjusting member is disposed on the connector and detachably connected to the first connecting assembly so that the battery pack is connected to the bottom of the vehicle body.

[0010] A control component, which passes through the connector and is inserted into the adjuster to secure the adjuster, is configured to detach from the adjuster in the event of thermal runaway of the battery pack, thereby detaching the battery pack from the vehicle body.

[0011] In one possible implementation, the connector includes a connecting seat and a fixing seat, the fixing seat being connected to the mounting beam, the connecting seat being connected to the fixing seat, the connecting seat extending above the mounting beam and being inserted into the first connecting assembly, and the adjusting member being disposed within the connecting seat.

[0012] In one possible implementation, the adjusting member includes an adjusting block and a limiting block. A limiting groove is provided on the connecting seat, the limiting block is slidably disposed on the limiting groove, the adjusting block is slidably disposed within the connecting seat, the adjusting block abuts against the limiting block, a fixing groove is provided on the adjusting block, the control component is inserted into the fixing groove, and the limiting block is configured such that when the control component is inserted into the fixing groove, the limiting block partially slides out of the limiting groove and engages with the first connecting component.

[0013] In one possible implementation, the adjusting member further includes an adjusting shaft, a connecting sleeve, and a fixing nut. The adjusting shaft is disposed within the connecting seat, the fixing nut is threaded onto the bottom of the connecting seat, the connecting sleeve is rotatably disposed on the fixing nut, the adjusting shaft is connected to the connecting sleeve, and the adjusting shaft is configured to move along the connecting seat so that the adjusting shaft abuts against the adjusting block and pushes the adjusting block to move.

[0014] In one possible implementation, when the control component is inserted into the fixed slot, there is a gap between the adjusting shaft and the adjusting block.

[0015] In one possible implementation, a first elastic element is provided inside the connecting seat, one end of which abuts against the top of the connecting seat and the other end of which abuts against the adjusting block, so that the adjusting block has a tendency to move toward the adjusting shaft.

[0016] In one possible implementation, the control component includes an electromagnetic drive, a guide rod, and a fixing block. The electromagnetic drive is connected to the guide rod, the guide rod is connected to the fixing block, and the fixing block is inserted into the adjusting member. The electromagnetic drive is configured such that, in the event of thermal runaway of the battery pack, the electromagnetic drive pushes the guide rod to break, and the adjusting member pushes the fixing block out of the connector under the action of gravity.

[0017] In one possible implementation, the end of the fixing block near the adjusting member is conical, and the adjusting member abuts against the conical surface of the fixing block.

[0018] Secondly, this application provides a vehicle including a body, a control system, and a battery pack connection structure disposed at the bottom of the body. The control system is connected to a control component in the battery pack connection structure. When the battery pack experiences thermal runaway, the control system adjusts the action of the control component to separate the battery pack from the body.

[0019] In one possible implementation, the control system includes a control component, a temperature sensor, and a pressure sensor. The control component is electrically connected to the control component, the temperature sensor, and the pressure sensor, respectively. The temperature sensor and the pressure sensor are both disposed within the battery pack to detect the temperature and pressure within the battery pack, respectively. When the temperature detected by the temperature sensor is greater than a preset temperature and / or the pressure detected by the pressure sensor is greater than a preset pressure, the control component controls the control component to operate.

[0020] This application provides a battery pack connection structure and a vehicle. The battery pack connection structure includes a mounting beam on the battery pack, a first connection assembly connected to the vehicle body, and a second connection assembly including a connector and an adjusting member. The connector is connected to the mounting beam, and the adjusting member is disposed on the connector. The adjusting member is detachably connected to the first connection assembly so that the battery pack is connected to the bottom of the vehicle body. A control assembly passes through the connector and is inserted into the adjusting member to fix the adjusting member. The control assembly is configured to separate from the adjusting member when the battery pack experiences thermal runaway, so that the adjusting member separates from the first connection assembly under the action of gravity, thereby causing the battery pack to actively detach from the vehicle body and throw the battery pack out. The vehicle body moves away from the battery pack under the action of inertia, reducing the harm caused to the occupants by the thermal runaway of the battery pack and effectively isolating the risk. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 An exploded view of the battery pack connection structure provided in this application;

[0023] Figure 2 A cross-sectional view of the connection component of the second connection assembly in the battery pack connection structure provided in this application;

[0024] Figure 3 A schematic diagram of the structure of the second connecting component in the battery pack connection structure provided in this application;

[0025] Figure 4 A schematic diagram of the first connecting component in the battery pack connection structure provided in this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Battery pack; 110. Mounting beam; 111. Mounting hole;

[0028] 200. First connecting component; 210. Connecting inner cylinder; 220. Connecting outer cylinder;

[0029] 300. Second connecting assembly; 310. Connector; 311. Connecting seat; 312. Fixing seat; 313. Limiting groove; 314. Limiting ring; 320. Adjusting component; 321. Adjusting block; 322. Limiting block; 323. Fixing groove; 324. Adjusting shaft; 325. Connecting sleeve; 326. Fixing nut; 330. First elastic element; 340. Second elastic element;

[0030] 400. Control component; 410. Electromagnetic drive component; 420. Guide rod; 430. Fixing block.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] In electric vehicles, the battery pack is typically installed at the bottom of the car. This makes full use of the chassis space and avoids encroaching on the interior passenger and trunk space. The battery pack is usually connected to the car body using bolts, securing it to the bottom of the vehicle with multiple bolts. However, during vehicle operation, when the battery pack experiences thermal runaway conditions such as over-discharge, short circuit, or high temperature, or when the vehicle is impacted and the battery pack experiences thermal runaway, the internal temperature of the battery pack rises sharply, which can easily lead to a fire or even an explosion, seriously endangering the safety of the occupants of the vehicle.

[0034] This application provides a battery pack connection structure and a vehicle. The battery pack connection structure includes a mounting beam on the battery pack, a first connection assembly connected to the vehicle body, and a second connection assembly including a connector and an adjusting member. The connector is connected to the mounting beam, and the adjusting member is disposed on the connector and detachably connected to the second connection assembly, so that the battery pack is connected to the bottom of the vehicle body. A control assembly passes through the connector and is inserted into the adjusting member to fix the adjusting member. The control assembly is configured to separate from the adjusting member when the battery pack experiences thermal runaway, so that the adjusting member separates from the first connection assembly under the action of gravity, thereby causing the battery pack to actively detach from the vehicle body and eject the battery pack. The vehicle body moves away from the battery pack under the action of inertia, reducing the harm caused to the occupants by the thermal runaway of the battery pack and effectively isolating the risk.

[0035] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0036] This application provides a battery pack connection structure, referring to... Figure 1 and Figure 2 The battery pack connection structure includes a battery pack 100, a first connection component 200, a second connection component 300, and a control component 400.

[0037] The battery pack 100 is provided with a mounting beam 110. The mounting beam 110 is used for detachable connection to the bottom of the vehicle body, so that the battery pack 100 serves as part of the vehicle body's floor.

[0038] The bottom of the battery pack 100 serves as part of the vehicle's floor, allowing the battery pack 100 to separate from the vehicle body from the bottom, thus enabling the battery pack 100 to detach actively.

[0039] For example, refer to Figure 1 Two mounting beams 110 are provided, and the two mounting beams 110 are arranged on both sides of the battery pack 100 along the length direction of the battery pack 100. In this application, the length direction of the battery pack 100 is the length direction of the vehicle body. In other embodiments, the mounting beams 110 may also be arranged around the battery pack 100.

[0040] The first connecting assembly 200 is used for connection to the vehicle body. The second connecting assembly 300 includes a connector 310 and an adjusting member 320. The connector 310 is connected to the mounting beam 110, and the adjusting member 320 is disposed on the connector 310 and detachably connected to the first connecting assembly 200 to connect the battery pack 100 to the bottom of the vehicle body. A control assembly 400 passes through the connector 310 and is inserted into the adjusting member 320 to secure the adjusting member 320. The control assembly 400 is configured to disengage from the adjusting member 320 in the event of thermal runaway of the battery pack 100, thereby detaching the battery pack 100 from the vehicle body.

[0041] During driving, when the battery pack 100 is subjected to thermal runaway conditions such as collision, over-discharge, short circuit, or high temperature, the control component 400 is activated to cause the adjustment component 320 to separate from the first connection component 200 under the action of gravity. This causes the battery pack 100 to actively detach from the vehicle body and be thrown out. The vehicle body moves away from the battery pack 100 under the action of inertia, reducing the harm caused to the occupants by the thermal runaway of the battery pack 100 and effectively isolating the risk.

[0042] For example, multiple connection structures can be provided on the same mounting beam 110. In this embodiment, five connection structures are provided on the mounting beam 110 to improve connection strength and enhance the stability of the battery pack 100 installation.

[0043] For example, the battery pack 100 includes a top cover, a middle frame, a bottom plate, and a cell structure. The top cover is fixed to the top of the middle frame by bolts, and the bottom plate is fixed to the bottom of the middle frame by bolts. The cell structure of the battery pack 100 is installed in the mounting cavity formed by the top cover, the middle frame, and the bottom plate. A mounting beam 110 is provided on the middle frame.

[0044] For example, the mounting beam 110 is integrally formed with the middle frame. In other examples, the mounting beam 110 may also be welded to the middle frame.

[0045] In one possible implementation, the connector 310 includes a connector 311 and a fixing seat 312. The fixing seat 312 is connected to the mounting beam 110, and the connector 311 is connected to the fixing seat 312. The connector 311 extends above the mounting beam 110 and is inserted into the first connecting assembly 200. The adjusting member 320 is disposed in the connector 311.

[0046] For example, a limiting ring 314 is provided on the connecting seat 311, and the limiting ring 314 is integrally formed with the connecting seat 311. The limiting ring 314 is provided on the outer side wall of the connecting seat 311, and the limiting ring 314 abuts against the upper surface of the mounting beam 110. The connecting seat 311 is a cylindrical part so that the limiting ring 314 abuts against the upper surface of the mounting beam 110 to limit the position of the connecting seat 311.

[0047] For example, the fixing seat 312 is connected to the mounting beam 110, and the fixing seat 312 is snapped into the connecting seat 311. The fixing seat 312 is installed in the mounting hole 111 of the mounting beam 110. The fixing seat 312 has a supporting step. One end of the connecting seat 311 passes through the fixing seat 312 and is connected to the first connecting assembly 200. A portion of the connecting seat 311 abuts against the supporting step of the fixing seat 312. The upper top of the fixing seat 312 abuts against the limiting ring 314. The connecting seat 311 is supported by the side wall of the fixing seat 312 to improve the support strength.

[0048] For example, the connecting seat 311 has a receiving cavity, and the adjusting member 320 is located in the receiving cavity. The mounting beam 110 has a mounting hole 111, and the connecting seat 311 passes through the mounting hole 111. A portion of the connecting seat 311 extends through the mounting hole 111 to the top of the mounting beam 110 and connects with the first connecting assembly 200. The first connecting assembly 200 is fixed to the vehicle body, and a portion of the connecting seat 311 is located in the mounting hole 111 and fixedly connected to the mounting beam 110, thereby realizing the connection between the battery pack 100 and the vehicle body.

[0049] For example, refer to Figure 1 and Figure 4 The first connecting assembly 200 may include a connecting inner cylinder 210, which has a connecting cavity. The bottom of the connecting cavity is open to allow the top of the connecting seat 311 to be inserted into the connecting cavity. The bottom diameter of the connecting cavity is smaller than the top diameter of the connecting cavity, so that the sidewall of the connecting cavity is inclined. The adjusting member 320 abuts against the inclined surface of the connecting cavity to snap the connecting seat 311 into the connecting inner cylinder 210.

[0050] For example, the first connecting component 200 may further include a connecting outer cylinder 220, which is fixedly sleeved on the connecting inner cylinder 210. The connecting outer cylinder 220 is used to connect with the vehicle body, and the bottom of the connecting inner cylinder 210 is supported on the bottom wall of the connecting outer cylinder 220 to support the connecting inner cylinder 210.

[0051] For example, the connecting outer cylinder 220 can be welded and fixed to the vehicle body.

[0052] In some other examples, the connecting outer cylinder 220 may also have connecting ears on both sides, and the two connecting ears are fixed to the connection point of the vehicle body by bolts.

[0053] In one possible implementation, refer to Figure 2 and Figure 3 The adjusting component 320 includes an adjusting block 321 and a limiting block 322. A limiting groove 313 is provided on the connecting seat 311. The limiting block 322 is slidably disposed on the limiting groove 313. The adjusting block 321 is slidably disposed in the connecting seat 311. The adjusting block 321 abuts against the limiting block 322. A fixing groove 323 is provided on the adjusting block 321. The control component 400 is inserted into the fixing groove 323. The limiting block 322 is configured such that when the control component 400 is inserted into the fixing groove 323, the limiting block 322 partially slides out of the limiting groove 313 and engages with the first connecting component 200.

[0054] The detachable connection between the first connecting component 200 and the second connecting component 300 is achieved through the cooperation of the adjusting block 321 and the limiting block 322. The limiting block 322 slides within the limiting groove 313, and a stable connection is achieved through the snap-fit ​​between the limiting block 322 and the first connecting component 200. This not only improves the adaptability and precision of installation, but also enhances the reliability of the connection, ensuring the stability of the battery pack 100 during vehicle operation.

[0055] For example, the outer wall of the adjusting block 321 is provided with a slope, which abuts against the limiting block 322. The adjusting block 321 is conical, with a sloped side wall, and the top diameter of the adjusting block 321 is smaller than the bottom diameter. After the sloped side wall of the adjusting block 321 abuts against the limiting block 322, the position of the limiting block 322 can be adjusted by sliding the adjusting block 321, so as to move the limiting block 322 out of or into the connecting seat 311, thereby realizing the connection and disconnection between the adjusting member 320 and the first connecting assembly 200.

[0056] For example, the adjusting block 321 can be a frustum, and the limiting block 322 abuts against the side wall of the frustum.

[0057] For example, multiple limit blocks 322 can be provided; specifically, the number of limit blocks 322 can be set to 3 or 4. Limiting grooves 313 correspond one-to-one with limit blocks 322, and the limiting grooves 313 are evenly distributed along the circumference of the connecting seat 311. Limiting blocks 322 are evenly distributed circumferentially within the corresponding limiting grooves 313 on the connecting seat 311.

[0058] For example, the limiting block 322 can be a steel ball.

[0059] In one possible implementation, the diameter of the steel ball is larger than the diameter of the limiting groove 313 on the side closest to the first connecting assembly 200. Furthermore, the diameter of the limiting groove 313 is larger than the radius of the steel ball. This prevents the steel ball from completely moving out of the connecting seat 311 from the limiting groove 313, while allowing the steel ball to partially engage with the first connecting assembly 200.

[0060] For example, the steel ball abuts against the bottom slope of the inner side of the connecting inner cylinder 210 to achieve a detachable connection between the first connecting assembly 200 and the second connecting assembly 300.

[0061] In one possible implementation, refer to Figure 2 and Figure 3 The adjusting component 320 also includes an adjusting shaft 324, a connecting sleeve 325, and a fixing nut 326. The adjusting shaft 324 is disposed inside the connecting seat 311, the fixing nut 326 is threaded onto the bottom of the connecting seat 311, the connecting sleeve 325 is rotatably disposed on the fixing nut 326, the adjusting shaft 324 is connected to the connecting sleeve 325, and the adjusting shaft 324 is configured to move along the connecting seat 311 so that the adjusting shaft 324 abuts against the adjusting block 321 and pushes the adjusting block 321 to move.

[0062] For example, the bottom of the adjusting block 321 is provided with an arc-shaped protrusion, and the top of the adjusting shaft 324 is provided with an arc-shaped groove. The arc-shaped groove and the arc-shaped protrusion are adapted to abut against each other to increase the contact area between the adjusting block 321 and the adjusting shaft 324. This prevents the adjusting block 321 from obstructing the adjusting shaft 324 during rotation and also has a certain guiding function to prevent the possible deviation between the adjusting shaft 324 and the adjusting block 321.

[0063] For example, the connecting sleeve 325 is rotatably connected to the fixing nut 326, the bottom of the adjusting shaft 324 extends through the connecting seat 311 into the connecting sleeve 325, the adjusting shaft 324 is threaded into the connecting seat 311, the top of the adjusting shaft 324 is evenly provided with vertical first limiting strips in the circumferential direction, the connecting sleeve 325 is also provided with vertical second limiting strips, the adjusting shaft 324 is slidably inserted into the connecting sleeve 325, the first limiting strips and the second limiting strips abut against each other, so that the connecting sleeve 325 and the adjusting shaft 324 are relatively fixed in the circumferential direction and can slide relative to each other in the axial direction, and there is a gap between the bottom wall of the connecting sleeve 325 and the bottom of the adjusting shaft 324 to provide the moving space of the adjusting shaft 324.

[0064] For example, the connection between the connecting sleeve 325 and the fixing nut 326 is set as an inclined surface, and the diameter of the upper end of the inclined surface is larger than the diameter of the lower end of the inclined surface, so as to snap the connecting sleeve 325 onto the fixing nut 326. The portion of the connecting sleeve 325 outside the fixing nut 326 is polygonal prism-shaped to facilitate the rotation of the connecting sleeve 325.

[0065] In one possible implementation, when the control component 400 is inserted into the fixed slot 323, there is a gap between the adjusting shaft 324 and the adjusting block 321.

[0066] During installation, rotating the connecting sleeve 325 causes the adjusting shaft 324 to rotate. The adjusting shaft 324 moves upward through the threaded connection with the connecting seat 311, so that the adjusting shaft 324 abuts against the adjusting block 321. Further rotating the connecting sleeve 325 pushes the adjusting block 321 upward, causing the adjusting block 321 to push the limiting block 322 outward toward the outside of the connecting seat 311 and engage with the connecting inner cylinder 210 fixed on the vehicle body, thereby connecting the battery pack 100 to the vehicle body. After the limiting block 322 moves into place, the fixing block 430 passes through the connecting seat 311 and inserts into the fixing groove 323, fixing the adjusting block 321. Then, rotating the connecting sleeve 325 again moves the adjusting shaft 324 downward, creating a gap between the adjusting shaft 324 and the adjusting block 321.

[0067] At this time, the weight of the battery pack 100 acts on the limiting block 322. The limiting block 322 abuts against the adjusting block 321 along the circumference of the connecting seat 311. The weight of the battery pack 100 is supported by the connecting seat 311. As the main force-bearing structure, the adjusting block 321 basically does not bear the weight of the battery pack 100 in the vertical direction. Even during vehicle bumps, the adjusting block 321 will not cause the fixing block 430 to be pushed out of the fixing groove 323.

[0068] In one possible implementation, refer to Figure 2 and Figure 3 The connecting seat 311 is provided with a first elastic member 330. One end of the first elastic member 330 abuts against the top of the connecting seat 311, and the other end abuts against the adjusting block 321, so that the adjusting block 321 has a tendency to move toward the adjusting shaft 324.

[0069] For example, the first elastic element 330 is a spring. When the spring is compressed, the first elastic element 330 can drive the adjusting block 321 to have a downward tendency. This is so that in the event of thermal runaway of the battery pack 100, the spring drives the adjusting block 321 downward, causing the steel ball to move back into the connecting seat 311 under the influence of the battery pack 100's gravity.

[0070] In one possible implementation, the control assembly 400 includes an electromagnetic drive 410, a guide rod 420, and a fixing block 430. The electromagnetic drive 410 is connected to the guide rod 420, and the guide rod 420 is connected to the fixing block 430. The fixing block 430 is inserted into the adjusting member 320. The electromagnetic drive 410 is configured such that, in the event of thermal runaway of the battery pack 100, the electromagnetic drive 410 pushes the guide rod 420 to break, and the adjusting member 320 pushes the fixing block 430 out of the connecting member 310 under the action of gravity.

[0071] For example, the electromagnetic drive 410 is mounted on the connecting seat 311, and the guide rod 420 is a thin rod with both ends connected to the fixing block 430 and the electromagnetic drive 410, respectively. When the battery pack 100 experiences thermal runaway, the electromagnetic drive 410 pushes the guide rod 420 toward the connecting seat 311. The guide rod 420 breaks under pressure, releasing the fixing block 430. The fixing block 430 moves out of the fixing groove 323 under the weight of the adjusting block 321 and the elastic force of the first elastic member 330, thereby causing the adjusting block 321 to lose its fixation. The adjusting block 321 moves downward so that the steel ball returns to the connecting seat 311, thereby separating the first connecting assembly 200 from the second connecting assembly 300 and detaching the battery pack 100.

[0072] For example, the electromagnetic drive 410 can be an electromagnetic solenoid valve. The drive end of the electromagnetic solenoid valve is connected to the guide rod 420, and the electromagnetic force of the solenoid valve drives the guide rod 420 to move, thereby breaking the guide rod 420.

[0073] In one possible implementation, the end of the fixing block 430 near the adjusting member 320 is conical, and the adjusting member 320 abuts against the conical surface of the fixing block 430.

[0074] For example, the cylindrical surface on the fixed block 430 abuts against the adjusting block 321, so that the adjusting block 321 can push the fixed block 430 after the guide rod 420 breaks under the action of gravity and elasticity.

[0075] For example, the guide rod 420 is provided with a fracture groove. When the guide rod 420 is pushed by the electromagnetic drive 410, the guide rod 420 fractures at the fracture groove. This facilitates the determination of the fracture location and the maximum pressure that causes the fracture.

[0076] For example, a second elastic element 340 is also sleeved on the adjusting shaft 324. The second elastic element 340 is disposed at the bottom of the adjusting shaft 324 and is used to drive the adjusting shaft 324 to slide toward the connecting sleeve 325.

[0077] For example, the second elastic element 340 can be a spring, with the bottom of the second elastic element 340 connected to the connecting sleeve 325 and the top of the second elastic element 340 connected to the adjusting shaft 324.

[0078] In other examples, a gas-driven structure can be used instead of the electromagnetic drive component 410 to cause the guide rod 420 to break. A compressed gas storage device is connected to the gas-driven structure via a pipe, and the piston or pneumatic component of the gas-driven structure is connected to the guide rod 420. After receiving a signal from the vehicle control system, the triggering device controls the gas-driven structure to actuate, causing the compressed gas to be released instantaneously into the drive mechanism. The drive mechanism converts the gas pressure into mechanical force, rapidly pushing the guide rod 420 to break along the fracture groove, achieving rapid separation of the battery pack 100 from the vehicle body. This ensures efficient and reliable disconnection of the battery pack 100 from the vehicle body in emergency situations, protecting the safety of the occupants.

[0079] In other examples, the first connecting component 200 and the second connecting component 300 can also be magnetic connection structures. Magnetic connection enables the connection between the first connecting component 200 and the second connecting component 300, achieving a detachable connection between the battery pack 100 and the vehicle body. When the battery pack 100 experiences thermal runaway, the magnetic connection structure demagnetizes under the high temperatures generated by the thermal runaway, thereby detaching the first connecting component 200 and the second connecting component 300, and achieving active detachment of the battery pack 100.

[0080] This application embodiment also provides a vehicle, including a body, a control system, and a battery pack connection structure disposed at the bottom of the body. The control system is connected to a control component 400 in the battery pack connection structure. When the battery pack 100 experiences thermal runaway, the control system adjusts the action of the control component 400 to separate the battery pack 100 from the body.

[0081] For example, the control unit can be the vehicle's infotainment computer. The control unit may also include a power supply, which is a separate 12V battery, electrically connected to both the infotainment computer and the control unit 400 to supply power to both.

[0082] In one possible implementation, the control system includes a controller, a temperature sensor, and a pressure sensor. The controller is electrically connected to the control assembly 400, the temperature sensor, and the pressure sensor, respectively. The temperature sensor and the pressure sensor are both located inside the battery pack 100 to detect the temperature and pressure inside the battery pack 100, respectively. When the temperature detected by the temperature sensor is greater than a preset temperature and / or the pressure detected by the pressure sensor is greater than a preset pressure, the controller controls the control assembly 400 to operate.

[0083] For example, both the temperature sensor and the pressure sensor are electrically connected to the control unit, and both the temperature sensor and the pressure sensor can be used individually as conditions for determining thermal runaway.

[0084] For example, in order to improve the accuracy of thermal runaway judgment and reduce the possibility of misjudgment, the controller will only control the battery pack 100 to separate from the vehicle body through the control component 400 when the temperature of the battery pack 100 is greater than the preset temperature and the voltage of the battery pack 100 is greater than the preset voltage.

[0085] For example, to ensure a smoother detachment of the battery pack 100, when an abnormal signal (such as excessive temperature or abnormal voltage) is detected in the battery pack 100, the sensor quickly transmits the signal to the controller. Upon receiving the signal, the controller immediately initiates the detachment procedure, gradually increasing the current supplied to the control component 400 to smoothly enhance the magnetic force and avoid impact caused by sudden changes in magnetic force. As the magnetic force increases, the battery valve pushes the guide rod 420 forward, and the guide rod 420 breaks at a preset fracture groove, causing the adjusting component 320 to lose its support and detach from the vehicle body along with the battery pack 100. The entire detachment process proceeds smoothly, and the battery pack 100 ultimately lands smoothly or is caught by a safety recovery device, ensuring the safety of the vehicle and passengers while reducing the impact on the surrounding environment.

[0086] The control component 400 in this application has an extremely fast response time, with a time of ≤100ms from detecting the thermal runaway signal to complete detachment, faster than passive mechanical fixation, enabling rapid response to emergencies. During detachment, its impact force is ≤500N, lower than the extremely high impact force of explosive bolt separation, effectively protecting the integrity of the vehicle structure and battery pack 100. Simultaneously, through the connection method of the first connecting component 200 and the second connecting component 300, its maximum load-bearing capacity is ≥1000N, which can stably fix the battery pack 100 under normal conditions and maintain high reliability even after multiple cycle tests, resulting in a long service life. Compared with passive mechanical fixation, this improves the reliability of the battery pack 100 connection.

[0087] This application provides a vehicle in which a battery pack 100 is mounted on a mounting beam 110, a first connecting assembly 200 is connected to the vehicle body, and a second connecting assembly 300 includes a connector 310 and an adjusting member 320. The connector 310 is connected to the mounting beam 110, and the adjusting member 320 is disposed on the connector 310 and detachably connected to the second connecting assembly 300, so that the battery pack 100 is connected to the bottom of the vehicle body. A control assembly 400 passes through the connector 310 and is inserted into the adjusting member 320 to fix the adjusting member 320. The control assembly 400 is configured to separate from the adjusting member 320 when the battery pack 100 experiences thermal runaway, so that the battery pack 100 actively detaches from the vehicle body and is thrown out. The vehicle body moves away from the battery pack 100 under inertia, reducing the harm caused to the occupants by the thermal runaway of the battery pack 100 and effectively isolating the risk.

[0088] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack connection structure characterized by comprising: The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body.

2. The battery pack connection structure according to claim 1, characterized by, The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body.

3. The battery pack connection structure according to claim 2, characterized by The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body.

4. The battery pack connection structure according to claim 3, characterized by The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body. The utility model relates to a battery pack (100) is connected to the bottom of the vehicle body, and the control assembly (400) is separated from the adjusting piece (320) when the battery pack (100) is thermal runaway, so that the battery pack (100) is separated from the vehicle body.

5. The battery pack connection structure according to claim 4, characterized by When the control assembly (400) is inserted into the fixing groove (323), the adjusting shaft (324) and the adjusting block (321) have a spacing.

6. The battery pack connection structure according to claim 4, characterized by The connecting seat (311) is provided with a first elastic member (330), one end of the first elastic member (330) abuts against the top of the connecting seat (311), and the other end abuts against the adjusting block (321), so that the adjusting block (321) has a tendency to move towards the adjusting shaft (324).

7. The battery pack connection structure according to any one of claims 1 to 6, characterized by, The control assembly (400) comprises an electromagnetic driving member (410), a guide rod (420) and a fixing block (430), the electromagnetic driving member (410) is connected with the guide rod (420), the guide rod (420) is connected with the fixing block (430), the fixing block (430) is inserted into the adjusting member (320), and the electromagnetic driving member (410) is configured to push the guide rod (420) to break when the battery pack (100) occurs thermal runaway, and the adjusting member (320) pushes the fixing block (430) to move out of the connecting member (310) under the action of gravity.

8. The battery pack connection structure according to claim 7, characterized by, One end of the fixing block (430) close to the adjusting member (320) is conical, and the adjusting member (320) abuts against the conical surface of the fixing block (430).

9. A vehicle characterized by comprising: A vehicle body, a control system and a battery pack connecting structure as claimed in any one of claims 1-8 arranged at the bottom of the vehicle body, the control system is connected with the control assembly (400) in the battery pack connecting structure, and when the battery pack (100) occurs thermal runaway, the control system adjusts the action of the control assembly (400) to separate the battery pack (100) from the vehicle body.

10. The vehicle of claim 9, wherein, The control system comprises a control member, a temperature sensor and a pressure sensor, the control member is electrically connected with the control assembly (400), the temperature sensor and the pressure sensor, the temperature sensor and the pressure sensor are arranged in the battery pack (100) to detect the temperature and the pressure in the battery pack (100) respectively, when the detected temperature of the temperature sensor is greater than a preset temperature and / or the detected pressure of the pressure sensor is greater than a preset pressure, the control member controls the action of the control assembly (400).

Images