Designated driving vehicle with middle battery compartment and battery transverse and horizontal quick assembling and disassembling structure
By using a centrally located battery compartment and a horizontally oriented quick-release battery structure in electric vehicles, along with quick-release pins and buttons, the problems of unstable center of gravity and high frictional resistance caused by battery placement are solved. This enables rapid disassembly of the battery pack and improves its stability, thereby enhancing the convenience and comfort of using electric vehicles.
Patent Information
- Application Number
- CN202520857444.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Existing electric vehicle battery layout schemes have problems such as a rearward center of gravity leading to increased vehicle length, instability, high frictional resistance, and difficulty in battery removal, which affect driving stability and ride comfort.
It adopts a centrally located battery compartment and a horizontal quick-release battery structure. The battery pack can be quickly disassembled and installed through quick-release pins and button design. The battery pack is placed at the bottom of the seat cushion. Combined with shock-absorbing springs and guide groove design, the center of gravity distribution is optimized and friction resistance is reduced.
It improves the driving stability and ride comfort of electric vehicles, simplifies the battery pack disassembly process, reduces the size of the vehicle after folding, making it easier to carry and store, and improving ease of use.
Smart Images

Figure CN223972656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric bicycle technology, specifically to a vehicle with a centrally located battery compartment and a horizontally oriented quick-loading and unloading structure for batteries. Background Technology
[0002] Currently, there are two main battery placement options for electric vehicles on the market: one is to place the battery above the rear wheel. This design makes the vehicle shorter and easier to fold, but the rearward center of gravity makes it more susceptible to damage when going over bumps, and the front wheel may lift up when starting or climbing, affecting control and safety. The other option is to place the battery in the seat area. The advantage is a more stable center of gravity, which improves driving safety, but the disadvantages are increased vehicle length and reduced ground clearance, which may lead to decreased passability and lower seat height, affecting comfort and passenger legroom. Both mainstream placement options have their advantages and disadvantages. A third option that has recently been introduced to the market is to place the battery squarely under the seat cushion, consisting of a battery compartment, seat cushion, and battery. The battery is removed by sliding it backward through the battery compartment and battery rails. However, the friction resistance during removal is high, making it inconvenient to remove, and it has not yet fully balanced vehicle stability, passability, and passenger comfort. Summary of the Invention
[0003] The purpose of this invention is to provide a vehicle with a centrally located battery compartment and a horizontally oriented quick-loading and unloading structure for batteries, in order to solve the problems of traditional electric vehicles having a long body length, a rearward center of gravity, and high frictional resistance.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A vehicle is provided with a centrally located battery compartment and a horizontally oriented quick-release battery structure. The vehicle includes a body, a frame, a seat compartment snapped onto the frame, a battery pack inside the seat compartment, and a seat cushion. Quick-release pins are symmetrically arranged on the frame, passing through the frame and connecting to the seat compartment. A button is slidably mounted on one side of each quick-release pin, and steel balls are symmetrically arranged on the other side. A pull lug is rotatably mounted on the outer side of the button on each quick-release pin. A shock-absorbing spring is located between the end of the frame and the body. Pressing the button and pulling the pull lug disengages the quick-release pin from the seat compartment, allowing the seat compartment to be lifted for replacement. The bottom of the seat compartment has symmetrically arranged guide grooves, each corresponding to a quick-release pin. Limiting pieces are provided at the connection points between the seat compartment and the quick-release pins, each limiting piece having a pin fixing hole in the center.
[0006] As a preferred option for a vehicle with a centrally located battery compartment and a horizontally oriented quick-loading and unloading structure for batteries, the seat compartment is symmetrically provided with several heat dissipation holes.
[0007] As a preferred solution for a vehicle with a centrally located battery compartment and a horizontally oriented quick-release battery structure, a return spring is provided at the connection point between the quick-release pin and the button. The button can push the steel ball outward under the action of the return spring, thereby fixing the seat compartment.
[0008] The beneficial effects of this utility model are:
[0009] By placing the battery pack at the bottom of the seat, the vehicle length is not increased, the center of gravity distribution is optimized, and driving stability is improved. At the same time, the quick-release seat compartment can be quickly removed along with the battery pack. It can be directly snapped on and off or slid off and off, avoiding the seat being too high and resulting in an excessively large folded size. This makes it easy to carry and store, and improves the overall convenience and comfort of use.
[0010] 2. The quick-release seat compartment solves the problems of sliding and pulling out the seat, which has high frictional resistance, long extraction time, and is inconvenient. Over time, the sliding rails are easily damaged by friction. The quick-release function allows for a two-second press and pull-out, making it convenient to use and quick to extract, and making it easy to store in the trunk space of a car. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0012] Figure 1 This is a three-dimensional structural diagram of a vehicle with a centrally located battery compartment and a horizontally oriented quick-loading and unloading structure for the battery, as described in one embodiment of this utility model.
[0013] Figure 2 This is a schematic diagram of the seating area and battery pack of a vehicle with a centrally located battery compartment and a horizontally oriented quick-loading and unloading structure, as described in one embodiment of this utility model.
[0014] Figure 3 This is a schematic diagram of the seat and quick-release pin portion of a vehicle with a centrally located battery compartment and a horizontally oriented quick-release battery structure, as described in an embodiment of this utility model.
[0015] Figure 4 This is a schematic diagram of the button and limiting piece structure of the valet vehicle with a centrally located battery compartment and a horizontally quick-loading and unloading structure for the battery, as described in one embodiment of this utility model.
[0016] Figure 5 This is a schematic diagram of the guide groove and pin fixing hole of the vehicle with the centrally located battery compartment and the horizontally quick-loading and unloading structure of the battery as described in one embodiment of this utility model.
[0017] In the picture:
[0018] 1. Body; 2. Frame; 3. Seat compartment; 31. Guide groove; 4. Battery pack; 5. Seat cushion; 6. Quick release pin; 7. Button; 8. Pull lug; 9. Shock absorber spring; 10. Limiting plate; 101. Pin fixing hole; 11. Heat dissipation hole. Detailed Implementation
[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] like Figure 1 and Figure 2As shown, this utility model provides a technical solution: a vehicle with a centrally located battery compartment and a horizontally oriented quick-release battery structure, including a vehicle body 1. The middle and handlebars of the vehicle body 1 are foldable. A frame 2 is installed on the top of the vehicle body 1. A seat compartment 3 is snap-fitted onto the top of the frame 2. A battery pack 4 is installed inside the seat compartment 3 and secured to the seat compartment 3 by a lock integrated with the battery pack 4. A seat cushion 5 is installed on the top of the seat compartment 3. A quick-release pin 6 is symmetrically installed on the left and right sides of the frame 2. The quick-release pin 6 passes through the frame 2 and connects and secures to the seat compartment 3. Each of the right-side quick-release pins 6 has a button 7 slidably mounted on its front side. A steel ball is symmetrically mounted on the rear end of each of the left and right quick-release pins 6. A pull lug 8 is rotatably mounted on the outer side of each button 7 on each of the left and right quick-release pins 6. A set of shock-absorbing springs 9 is installed between the bottom end of the frame 2 and the rear wheel of the body 1 to cushion the frame 2 and reduce vibrations during riding. When disassembly or replacement is required, simply press the button 7 while pulling the pull lug 8 forward to disengage the quick-release pin 6 from the seat 3, then lift the seat 3 for replacement. It can also be directly... Inside the seat compartment 3, unlock the battery pack 4 and then pull it out to the left. The vehicle then places the battery pack 4 in the seat compartment 3 at the bottom of the seat cushion 5. This avoids increasing the length of the vehicle body 1 by using a rear-mounted battery pack 4, optimizes the center of gravity distribution of the vehicle body 1, and improves the driving stability of the vehicle. Simultaneously, the battery pack 4 automatically locks when it slides into place. The seat compartment 3, equipped with quick-release pins 6, has a quick-release function, allowing for rapid removal of the battery pack 4 along with the vehicle, achieving one-second separation of the vehicle and battery. This solves problems such as the excessive height of the seat cushion 5 and its large size after folding. This also avoids wear and tear on the battery pack 4 caused by repeated replacement of the battery pack 4 by the seat compartment 3. After the seat compartment 3, battery pack 4 and seat cushion 5 are quickly removed, the folding height of the vehicle is significantly reduced, the empty vehicle weight is controlled within 18 kg, and the folding size is more compact (height only 65-70 cm, width 28-37 cm). The battery pack 4 is available in 30A, 35A, 40A, 50A, 58A and 65A options, and the vehicle can freely switch between front-wheel drive, rear-wheel drive and dual-wheel drive modes, making it easy to carry and store the vehicle, and improving the overall convenience and comfort of use.
[0024] like Figure 2 , Figure 4 and Figure 5As shown, the bottom of the seat compartment 3 is symmetrically provided with multiple guide grooves 31. There are four guide grooves 31 in total, and they are symmetrical to each other. The guide grooves 31 on the left and right sides correspond to the quick-release pins 6 on the left and right sides, respectively, so that the quick-release pins 6 can be snapped and fixed in the guide grooves 31. A limiting piece 10 is installed at the connection between the seat compartment 3 and the quick-release pin 6. There are four limiting pieces 10 in total, and each limiting piece 10 has a pin fixing hole 101 in the middle, which is used to cooperate with the quick-release pin 6 to further tighten and fix the seat compartment 3. Multiple heat dissipation holes 11 are symmetrically provided on the front and back of the seat compartment 3, so that the battery pack 4 can quickly dissipate heat to the outside when in use. A return spring is installed at the connection between the quick-release pin 6 and the button 7. The button 7 can push the steel ball outward under the action of the return spring, thereby fixing the seat compartment 3.
[0025] Working principle: When in use, install the frame 2 on the vehicle body 1, then push the battery pack 4 into the left side of the seat compartment 3 and fix it in the seat compartment 3. Then install the seat cushion 5. Next, align the guide groove 31 of the seat compartment 3 with the hollow shaft from top to bottom and install it on the frame 2. By pressing the buttons 7 on both sides at the same time, the return spring is compressed, causing the steel ball to retract inward. At this time, insert the quick release pin 6 into the slot of the seat compartment 3. Release the button 7, and the return spring will return to its original position, pushing the steel ball outward to fix the seat compartment 3. With the help of the limiting piece 10, the seat compartment 3 is fixed on the frame 2. When it is time to fold and store after use, press the buttons 7 on both sides at the same time, and pull the pull tab 8 forward to retract the steel ball inward. Then pull the quick release pin 6 forward to remove the seat compartment 3 from the frame 2 and store it. When only the battery pack 4 needs to be replaced, release the lock at the connection between the battery pack 4 and the seat compartment 3 to remove the battery pack 4 for replacement.
[0026] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.
Claims
1. A taxi of a middle battery compartment and a battery horizontal fast dismounting structure, characterized in that, Including car body (1), car body (1) is provided with frame (2), frame (2) is provided with seat bin (3) in clamping type, seat bin (3) is provided with battery pack (4) in, seat bin (3) is provided with seat cushion (5), frame (2) is provided with quick release pin (6) symmetrically, quick release pin (6) is connected with seat bin (3) through frame (2), one side of quick release pin (6) is provided with button (7) in sliding mode, the other side of quick release pin (6) is provided with steel ball symmetrically, the outside of button (7) on quick release pin (6) is provided with pull ear (8) in rotation mode, damping spring (9) is arranged between the end of frame (2) and car body (1), press button (7) and then pull pull ear (8) make quick release pin (6) and seat bin (3) separate and then lift seat bin (3) and change, the bottom of seat bin (3) is provided with guide slot (31) symmetrically, the guide slot with (31) quick release pin (6) one to one, the connecting place of seat bin (3) and quick release pin (6) is provided with limit sheet (10), a bolt fixing hole (101) is formed in the middle of limit sheet (10).
2. The intermediate battery compartment and battery horizontal quick-mounting and dismounting structure's chauffeur car according to claim 1, characterized in that, The seat bin (3) is provided with a plurality of heat dissipation holes (11) symmetrically.
3. The intermediate battery compartment and battery horizontal quick-mounting and dismounting structure's chauffeur car according to claim 1, characterized in that, The connecting place of button (7) in quick release pin (6) is provided with return spring, button (7) can push steel ball outward under the action of return spring and then fix seat bin (3).