Battery pack with anti-collision function for electric self-unloading truck

Abstract

This invention provides a new energy battery pack with anti-collision function, including a mounting frame fixedly connected to an AGV and used to support battery modules; the battery module includes a battery body and several avoidance components; several triggering components are provided on the mounting frame; the triggering components are used to trigger the avoidance components to lift the battery body when the AGV collides with a protrusion, so that the battery body is away from the protrusion; the avoidance components are provided with positioning components, which are used to fix the position of the avoidance components after the battery body is lifted. Through the linkage of the triggering components and the avoidance components, efficient protection of the AGV battery body is achieved. When a collision occurs, the trigger plate first bears the horizontal extrusion force of the protrusion, and through the rigid transmission between the connecting block and the control plate, the impact force is synchronously transmitted to the tilt control groove and the return spring. The control groove is used to convert the horizontal movement into vertical lifting, so that the battery body can quickly move away from the danger zone.

Description

Technical Field

[0001] This invention relates to the field of energy storage batteries, and in particular to a battery pack for an electric dump truck with anti-collision function. Background Technology

[0002] In energy storage systems, the battery pack serves as the core power source, and its safety performance directly affects the operational safety of electric dump trucks. During operation, the battery pack of an electric dump truck is typically rigidly connected to the chassis and arranged flush with it. However, this battery pack design still has certain drawbacks: Electric dump trucks mostly operate on construction sites, where the road conditions are not flat. If the height of a protrusion is slightly higher than the ground clearance of the chassis and is in the blind spot of the sensor detection, although the electric dump truck will pass over the protrusion after the front of the truck collides with it, the bottom of the battery pack will directly collide and scrape against the protrusion. Since most existing battery packs use a fixed guard plate structure, the collision and scraping force of the protrusion along the direction of the electric dump truck's travel will directly act on the bottom of the battery pack. The guard plate can only withstand the impact through its rigid material. When the bottom guard plate is collided, scratched, or worn by the protrusion, the protrusion will further intrude and directly scrape the battery shell, which may puncture the battery shell and cause electrolyte leakage, internal short circuit, or even thermal runaway. Summary of the Invention

[0003] In view of the problems in the above or existing technology, when the bottom protective plate of the battery pack is hit, scratched or worn by protrusions, the protrusions will further invade and directly scratch the battery casing, which may puncture the battery casing and cause electrolyte leakage, internal short circuit or even thermal runaway, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a battery pack for an electric dump truck with anti-collision function.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a battery pack for an electric dump truck with anti-collision function, comprising, Mounting bracket for fixed connection with electric dump truck and for carrying battery modules; The battery module includes a battery body and several obstacle avoidance components; The mounting bracket is equipped with several triggering components; the triggering components are used to trigger the avoidance components to lift the battery body when the electric dump truck collides with a protrusion, so that the battery body is away from the protrusion. The avoidance component is equipped with a positioning component, which is used to fix the position of the avoidance component after the battery body is lifted. The positioning component is also equipped with an unlocking component for releasing the avoidance component after a collision occurs.

[0006] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, the avoidance component includes a column fixedly installed on the mounting frame, a sliding sleeve slidably installed on the outside of the column, and an ear plate fixedly installed on the side of the sliding sleeve near the battery body.

[0007] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, the triggering component includes a guide rod fixedly installed on the inner wall of the mounting frame, a control plate slidably installed on the outer side of the guide rod, a control rod fixedly installed on the outer side of the sliding sleeve, and a plurality of control slots that slide and cooperate with the corresponding control rods on the control plate.

[0008] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, wherein: damping springs are fixedly installed between the control board and the inner walls on both sides of the mounting bracket; several connecting blocks are fixedly installed on the control board; a limiting groove is provided on the mounting bracket to slide with the corresponding connecting block; and a trigger plate is installed at the bottom of the multiple connecting blocks.

[0009] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, the positioning component includes a mounting plate fixedly installed on the outside of the sliding sleeve, a hollow rod fixedly installed on the mounting plate, and a cone fixedly installed on the hollow rod.

[0010] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, wherein: a plurality of positioning cylinders corresponding to the cone are fixedly installed on the inner wall of the mounting bracket, a plurality of extension cylinders are fixedly installed on the outer side of the positioning cylinders, and a wedge block is fixedly installed on the inner wall of the extension cylinders by means of a reset spring.

[0011] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, the unlocking component includes a sliding groove through a hollow rod, a U-shaped frame slidably installed in the sliding groove, and a butterfly platform fixedly installed on the U-shaped frame.

[0012] As a preferred embodiment of the electric dump truck battery pack with anti-collision function of the present invention, wherein: an unlocking rod that slides through the mounting plate is fixedly installed on the U-shaped frame, a second reset spring is fixedly installed on the mounting plate, and the two corresponding unlocking rods are connected by a connecting plate, and the connecting plate is fixedly connected to the second reset spring.

[0013] The beneficial effects of the electric dump truck battery pack with anti-collision function of the present invention are as follows: By linking the triggering and avoidance components, efficient protection of the battery body of the electric dump truck is achieved. When a collision occurs, the triggering plate first bears the horizontal extrusion force of the protrusion and simultaneously triggers the avoidance component, allowing the battery body to quickly move away from the danger zone. At the same time, the cone and wedge locking mechanism of the positioning component ensures that the battery body remains suspended when the protrusion scrapes the triggering plate, preventing the protrusion from further intruding and directly scraping the battery body shell after the triggering plate is damaged. This eliminates the risk of electrolyte leakage, internal short circuit, or even thermal runaway caused by shell puncture. Furthermore, the triggering plate, as a "sacrificial protective plate," adopts a detachable design and can be replaced separately after wear, significantly reducing maintenance costs compared to the replacement cost of only damaging the battery body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a diagram showing the state of the invention when it is installed on an electric dump truck.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the guide rod, control plate, control groove, control rod, and damping spring of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the column, sliding sleeve, and ear plate of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the mounting plate, hollow rod, frustum, and extension cylinder of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the battery body, connecting block, column and sliding sleeve of the present invention.

[0021] In the diagram: 1. Mounting bracket; 2. Battery module; 21. Battery body; 22. Avoidance assembly; 221. Column; 222. Sliding sleeve; 223. Ear plate; 23. Trigger assembly; 231. Guide rod; 232. Control board; 233. Control groove; 234. Control rod; 235. Damping spring; 236. Limit groove; 237. Connecting block; 238. Trigger plate; 24. Positioning assembly; 241. Mounting plate; 242. Hollow rod; 243. Cone; 244. Extension cylinder; 245. Reset spring one; 246. Wedge block; 247. Positioning cylinder; 25. Unlocking assembly; 251. Slide groove; 252. U-shaped frame; 253. Butterfly platform; 254. Unlocking rod; 255. Reset spring two; 26. Connecting plate. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Reference Figure 1 and Figure 2 This embodiment provides a battery pack for an electric dump truck with anti-collision function, which can achieve the effect of quickly lifting the battery body 21 away from the danger zone when a collision occurs. It includes a mounting frame 1 fixedly connected to the electric dump truck and used to support the battery module 2. The battery module 2 includes the battery body 21 and a plurality of rectangularly distributed avoidance components 22. The mounting frame 1 is provided with a plurality of triggering components 23. The triggering components 23 are used to trigger the avoidance components 22 to lift the battery body 21 when the electric dump truck collides with a protrusion, so that the battery body 21 is away from the protrusion. The avoidance components 22 are provided with positioning components 24. The positioning components 24 are used to fix the position of the avoidance components 22 after the battery body 21 is lifted. The positioning components 24 are provided with unlocking components 25 for releasing the fixation of the avoidance components 22 after a collision occurs.

[0024] Reference Figure 2 , Figure 3 and Figure 4 The obstacle avoidance component 22 includes a column 221 fixedly mounted on the mounting frame 1 and perpendicular to the ground. A sliding sleeve 222 is slidably mounted on the outside of the column 221. An ear plate 223 is fixedly mounted on the side of the sliding sleeve 222 near the battery body 21. During installation, the battery body 21 is pushed into the mounting frame 1 from below and the threaded hole on the bottom edge of the battery body 21 is aligned with the threaded hole on the ear plate 223. Then, the battery body 21 and the ear plate 223 are threadedly fixed by bolts. At this time, the bottom surface of the battery body 21 is flush with the bottom surface of the mounting frame 1.

[0025] It should be noted that the above-mentioned installation process of the battery body 21 is one part of the battery swapping process of electric dump trucks in the prior art. The complete battery swapping process also includes the removal of the old battery, disconnection / connection of electrical interfaces, etc. This is common knowledge to those skilled in the art, so it will not be described in detail in this application.

[0026] It should be noted that the inner wall of the sliding sleeve 222 and the contact surface with the column 221 are coated with polytetrafluoroethylene to reduce the coefficient of friction and improve service life. A limiting plate is set on the top of the column 221 to limit the sliding range of the sliding sleeve 222. A silicone pad is provided on the contact surface between the sliding sleeve 222 and the mounting bracket 1. After the sliding sleeve 222 is knocked down and reset, the silicone pad absorbs high-frequency vibration through viscoelastic deformation when the battery body 21 is hit, thereby reducing the impact force on the battery body 21 and protecting the internal cells of the battery body 21 from mechanical stress damage.

[0027] Reference Figure 2 and Figure 3 The triggering component 23 includes a guide rod 231 fixedly installed on the inner wall of the mounting frame 1 and arranged horizontally. A control plate 232 is slidably installed on the outer side of the guide rod 231. A control rod 234 is fixedly installed on the side of the sliding sleeve 222 near the control plate 232. Several control slots 233 are provided on the control plate 232 to slide and cooperate with the corresponding control rod 234.

[0028] It should be noted that the control rod 234 is vertically fixed to the sliding sleeve 222, and the control rod 234 is embedded in the control groove 233 of the control plate 232. The control groove 233 is inclined. When the control plate 232 slides horizontally towards the side closer to the control rod 234, the control rod 234 moves upward along the inclined section of the control groove 233, pushing the sliding sleeve 222 to rise vertically along the column 221.

[0029] Reference Figure 2 , Figure 3 and Figure 6 Damping springs 235 are fixedly installed between the control plate 232 and the inner walls on both sides of the mounting bracket 1. The outer side of the guide rod 231 is sleeved on the damping spring 235. Two symmetrical connecting blocks 237 are fixedly installed at the bottom of the control plate 232. The mounting bracket 1 is provided with a limiting groove 236 that slides with the corresponding connecting block 237. A trigger plate 238 is installed at the bottom of multiple connecting blocks 237.

[0030] It should be noted that the trigger plate 238 and the connecting block 237 are quickly connected by a bolt assembly (not shown in the figure), as detailed below: Countersunk bolt holes are machined on the top of the trigger plate 238, and through holes are opened at the bottom of the corresponding connecting block 237. The bolts are locked through the holes with hexagonal socket head cap screws. The bolt length must ensure that the head does not exceed the surface of the trigger plate 238 to avoid scratching ground obstacles.

[0031] The connection method between the trigger plate 238 and the connecting block 237 is common knowledge to those skilled in the art, and therefore will not be described in detail in this application.

[0032] During operation, when the electric dump truck collides with a protruding object on the ground, the top of the protrusion first contacts the trigger plate 238 installed at the bottom of the electric dump truck. Because the height of the protrusion matches the clearance at the bottom of the electric dump truck chassis, the protrusion applies a horizontal compressive force to the trigger plate 238 along the direction of travel. This, in turn, causes the connecting block 237 to move synchronously via the trigger plate 238, which in turn moves the control plate 232 synchronously and compresses (and stretches) the damping spring 235 sleeved on the outside of the guide rod 231, thus deflecting the impact of the protrusion. The impact energy is converted into spring potential energy, preventing the impact energy from being directly transmitted to the battery body 21. At the same time, it provides pre-stored power for subsequent reset. Meanwhile, the control rod 234 moves vertically upward along the inner wall of the inclined control groove 233 on the control plate 232, converting the horizontal displacement of the control plate 232 into the vertical lifting action of the sliding sleeve 222 along the column 221. Finally, the ear plate 223 drives the battery body 21 to move away from the protrusion until the positioning component 24 positions the avoidance component 22 (at this time, the control rod 234 moves to the inclined end of the control groove 233).

[0033] When the protrusion continues to press the trigger plate 238, it can no longer move the trigger plate 238, and will therefore pass over the trigger plate 238, causing scratches on the bottom of the trigger plate 238. At this time, because the battery body 21 is already away from the protrusion on the ground, it can avoid collision and scratches to the outer shell of the battery body 21.

[0034] It should be noted that when an electric dump truck collides with a protrusion on the ground, if the avoidance component 22 is not installed, the protrusion will first scrape the battery guard plate after lifting the chassis of the electric dump truck. Once the guard plate is damaged due to its rigidity and impact resistance, the protrusion will directly scrape the battery casing, or even puncture the casing, causing electrolyte leakage. However, with the avoidance component 22 installed, the trigger plate 238 will first bear the horizontal pressure of the protrusion. The avoidance component 22 is triggered by the trigger component 23, which allows the battery body 21 to quickly move away from the danger zone (away from the protrusion). At the same time, the positioning component 24 locks the lifting position, preventing the battery body 21 from falling back when the protrusion continues to scrape the trigger plate 238. Thus, physical isolation is achieved through active lifting, preventing the protrusion from further intruding and directly scraping the casing of the battery body 21 after the trigger plate 238 is damaged. This eliminates the risk of electrolyte leakage, internal short circuit, or even thermal runaway caused by casing puncture.

[0035] Reference Figure 1 , Figure 4 and Figure 5The positioning assembly 24 includes a mounting plate 241 fixedly installed on the side of the sliding sleeve 222 near the inner wall of the mounting frame 1. A hollow rod 242 is fixedly installed on the mounting plate 241. A truncated cone 243 is fixedly installed on the end of the hollow rod 242 away from the mounting plate 241. A plurality of positioning cylinders 247 corresponding to the truncated cone 243 are fixedly installed on the inner wall of the mounting frame 1. Two mutually symmetrical extension cylinders 244 are fixedly installed on the outer side of the positioning cylinders 247. A wedge block 246 cooperating with the truncated cone 243 is fixedly installed on the inner wall of the extension cylinder 244 near the positioning cylinder 247 by a return spring 245.

[0036] Reference Figure 4 and Figure 5 The unlocking component 25 includes a slide groove 251 that runs through the hollow rod 242. A U-shaped frame 252 is slidably installed in the slide groove 251. A butterfly platform 253 that cooperates with the cone 243 is fixedly installed on the side of the U-shaped frame 252 near the cone 243.

[0037] Reference Figure 4 and Figure 5 An unlocking rod 254 that slides through the mounting plate 241 is fixedly installed on the side of the U-shaped frame 252 away from the butterfly stage 253. A second reset spring 255 that is sleeved on the outside of the unlocking rod 254 is fixedly installed on the side of the mounting plate 241 away from the butterfly stage 253. The two unlocking rods 254 are connected by a connecting plate 26, and the connecting plate 26 is fixedly connected to the second reset spring 255.

[0038] During use, when the sliding sleeve 222 is driven by the trigger component 23 to rise vertically along the column 221, the mounting plate 241 moves upward simultaneously, causing the hollow rod 242 and the top cone 243 to insert into the positioning cylinder 247 on the inner wall of the mounting bracket 1. The conical surface of the cone 243 first squeezes the wedge block 246, causing the wedge block 246 to compress the return spring 245 outward and slide along the extension cylinder 244. When the cone 243 is fully inserted into the positioning cylinder 247, the wedge block 246, under the elastic force of the return spring 245, gets stuck in the annular groove of the cone 243, forming a mechanical lock. This ensures that the sliding sleeve 222 and the battery body 21 are stably maintained in the raised position, preventing the battery body 21 from falling back due to the avoidance component 22 causing the protrusion to cross the edge of the trigger plate 238 and scrape the bottom of the trigger plate 238. At this time, the control rod 234 moves synchronously to the end of the inclined section of the control groove 233, and the horizontal sliding of the trigger component 23 is limited.

[0039] The locking mechanism of the cone 243 and wedge block 246 of the positioning component 24 ensures that the battery body 21 remains suspended when the protrusion scrapes the trigger plate 238, thus avoiding secondary collisions. The trigger plate 238, as a "sacrificial protective plate", can be disassembled and replaced separately, and the maintenance cost is significantly reduced compared to the replacement cost when only the battery body 21 is damaged.

[0040] When the collision ends and reset is required, the operator pulls the connecting plate 26 with external force, causing the unlocking rod 254 to slide towards the side closer to the cone 243 and compress the second reset spring 255. This pushes the U-shaped frame and the butterfly platform 253 towards the cone 243. The inclined surface of the butterfly platform 253 near the cone 243 compresses the wedge block 246, overcoming the elastic force of the first reset spring 245 and causing the wedge block 246 to retract into the extension cylinder 244. Then, the butterfly platform 253 continues to move and will completely fit against the cone 243. Next, the operator releases the connecting plate 26, and the second reset spring 255 releases its elastic potential energy, driving the unlocking rod 254 to reset away from the cone 243. At this time, the reverse inclined surface of the butterfly platform 253 away from the cone 243 (at a symmetrical angle with the inclined surface closer to the cone) compresses the outer side of the wedge block 246 again, causing the wedge block 246 to retract into the extension cylinder 244. 46 is fully retracted into the extension tube 244, and then the mating butterfly platform 253 and cone platform 243 successively pass over the wedge block 246 to reset. Then, the wedge block 246 returns to its initial state under the action of the first reset spring 245, and the butterfly platform 253 resets and disengages from the cone platform 243 under the action of the second reset spring 255. At the same time, the unlocked sliding sleeve 222 moves the mounting sleeve closer to the mounting bracket 1 under the gravity of the battery body 21. During this process, the damping spring 235 gradually releases its elastic potential energy, causing the control plate 232 to move synchronously to reset through the connecting block 237 and the trigger plate 238. At the same time, the sliding sleeve 222 will also squeeze the control groove 233 during the movement, further providing driving force for the reset of the control plate 232, until the sliding sleeve 222 falls on the mounting bracket 1 to complete the reset process.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A battery pack for an electric dump truck with anti-collision function, characterized in that: include, Mounting bracket (1) for connection to electric dump truck and for carrying battery module (2); The battery module (2) includes a battery body (21) and several avoidance components (22); The mounting bracket (1) is provided with several triggering components (23); the triggering components (23) are used to trigger the avoidance components (22) to lift the battery body (21) when the electric dump truck collides with the protrusion, so that the battery body (21) is away from the protrusion; The avoidance component (22) is provided with a positioning component (24), which is used to fix the position of the avoidance component (22) after the battery body (21) is lifted. The positioning component (24) is provided with an unlocking component (25) for releasing the avoidance component (22) after a collision occurs.

2. The energy storage battery pack with anti-collision function as described in claim 1, characterized in that: The avoidance component (22) includes a column (221) fixedly installed on the mounting bracket (1), a sliding sleeve (222) slidably installed on the outside of the column (221), and an ear plate (223) fixedly installed on the side of the sliding sleeve (222) near the battery body (21).

3. The energy storage battery pack with anti-collision function as described in claim 2, characterized in that: The triggering component (23) includes a guide rod (231) fixedly installed on the inner wall of the mounting bracket (1), a control plate (232) slidably installed on the outer side of the guide rod (231), a control rod (234) fixedly installed on the outer side of the sliding sleeve (222), and a plurality of control slots (233) slidably engaged with the corresponding control rods (234) on the control plate (232).

4. The energy storage battery pack with anti-collision function as described in claim 3, characterized in that: Damping springs (235) are fixedly installed between the control plate (232) and the inner walls on both sides of the mounting bracket (1). Several connecting blocks (237) are fixedly installed on the control plate (232). The mounting bracket (1) is provided with a limiting groove (236) that slides with the corresponding connecting block (237). A trigger plate (238) is installed at the bottom of the multiple connecting blocks (237).

5. The new energy battery pack with anti-collision function as described in claim 3, characterized in that: The positioning component (24) includes a mounting plate (241) fixedly installed on the outside of the sliding sleeve (222), a hollow rod (242) fixedly installed on the mounting plate (241), and a truncated cone (243) fixedly installed on the hollow rod (242).

6. The energy storage battery pack with anti-collision function as described in claim 5, characterized in that: The mounting bracket (1) has several positioning cylinders (247) corresponding to the truncated cone (243) fixedly installed on its inner wall. Several extension cylinders (244) are fixedly installed on the outer side of the positioning cylinders (247). The inner wall of the extension cylinders (244) is fixedly installed with wedge blocks (246) by a reset spring (245).

7. The energy storage battery pack with anti-collision function as described in claim 5, characterized in that: The unlocking component (25) includes a groove (251) extending through the hollow rod (242), a U-shaped frame (252) slidably installed in the groove (251), and a butterfly platform (253) fixedly installed on the U-shaped frame (252).

8. The energy storage battery pack with anti-collision function as described in claim 7, characterized in that: The U-shaped frame (252) is fixedly installed with an unlocking rod (254) that slides through the mounting plate (241). The mounting plate (241) is fixedly installed with a second reset spring (255). The two unlocking rods (254) are connected by a connecting plate (26). The connecting plate (26) is fixedly connected to the second reset spring (255).

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