Trailer replaceable battery compartment of new energy automobile
By designing a battery compartment for new energy vehicles with a towable wheel set, replaceable battery, multiple sealing and shock absorption mechanisms, the problems of inconvenience in carrying external batteries, safety hazards and poor adaptability to charging environments have been solved, achieving convenient movement, rapid charging and safety protection, and improving range.
Patent Information
- Application Number
- CN202511150422.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2025-11-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing external batteries for new energy vehicles suffer from problems such as inconvenience in carrying, cumbersome connection, significant safety hazards, susceptibility to damage, and poor adaptability to charging environments, especially causing severe range anxiety in outdoor scenarios.
A replaceable battery compartment for new energy vehicles has been designed. It adopts a towable wheel set for easy movement, and is equipped with a replaceable battery design, a multi-sealing structure, a status monitoring function and a shock absorption mechanism. Combined with a sunshade mechanism, it can improve portability, safety and adaptability.
It achieves convenient portability and docking, rapid power replenishment, enhanced safety protection, extended battery life, and improved adaptability to charging environments, alleviating range anxiety and providing reliable energy security for outdoor travel.
Smart Images

Figure CN120921891A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of new energy vehicle technology, specifically to a replaceable battery compartment for new energy vehicle trailers. Background Technology
[0002] With the popularization of new energy vehicles, range anxiety has become a core pain point for users, especially in long-distance travel or outdoor scenarios, where the problem of insufficient charging infrastructure coverage is prominent. Traditional external backup batteries are mostly portable or fixed installation type, which have problems such as inconvenience in carrying and complicated docking, and are also heavy and difficult for a single person to operate.
[0003] In existing replaceable battery solutions, the batteries lack effective sealing protection and are susceptible to corrosion from rain and dust, posing safety hazards. During the charging process, the charging port is exposed to direct sunlight or rain and snow, which not only affects charging efficiency but may also shorten the life of the equipment.
[0004] In addition, when a vehicle is towing an external battery, road bumps can cause the battery to vibrate violently, damaging internal components and reducing battery life. At the same time, traditional battery compartments lack real-time status monitoring functions, making it difficult for users to keep track of the battery status and further increasing the risk of use. Therefore, there is a need for an external battery solution that takes into account portability, safety and adaptability. Summary of the Invention
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this invention provides a replaceable battery compartment for new energy vehicles, solving several core problems associated with external batteries in new energy vehicles. Firstly, traditional external batteries are inconvenient to carry; the towable design with wheels makes docking and movement more convenient, easily solving the carrying problem. Secondly, the low charging efficiency is addressed by the replaceable battery design, which simplifies loading and unloading, significantly shortens charging time, and effectively alleviates range anxiety. Thirdly, safety hazards are mitigated by the multi-layered sealing structure and status monitoring function, enhancing safety protection and reducing usage risks. Fourthly, battery damage is addressed by the shock absorption mechanism, which uses springs and hydraulic rods to buffer bumps, protecting the battery and extending its lifespan. Fifthly, poor adaptability to charging environments is addressed by the sunshade mechanism, which expands the area and locks easily, enhancing adaptability to different charging environments, improving the user experience, and providing reliable energy security for outdoor travel.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the present invention provides the following technical solution: a replaceable battery compartment for new energy vehicles, comprising: a battery compartment body, a status display screen located near the left side of the front end of the battery compartment body, a charging port located near the center of the front end of the battery compartment body, a charger located inside the charging port, a storage area located near the right side of the front end of the battery compartment body, a battery placed inside the storage area, a right-opening cover located at the front end of the storage area, a first fixing member fixedly connected to the bottom of the battery compartment body near the right end, a second fixing member fixedly connected to the lower end of the first fixing member, a sunshade mechanism located at the front end of the charging port, and a shock-absorbing protection mechanism located at the bottom of the second fixing member;
[0009] The shock absorption protection mechanism includes:
[0010] The support slide rail is fixedly connected to the bottom of the second fixing member;
[0011] The first slider, the inner wall of the supporting slide rail is slidably connected to the first slider;
[0012] A connecting rod is fixedly connected between the two first sliders;
[0013] The hydraulic rod is fixedly connected to the connecting rod at its bottom.
[0014] The sunshade mechanism includes:
[0015] The front end of the charging port is hinged to the upward-opening sunshade.
[0016] The first sliding groove is located inside the sunshade cover;
[0017] The slide plate has its interior connected to the slide plate via the first groove.
[0018] Preferably, a first sealing ring is fixedly connected to the outer side of the cover plate, and the outer surface of the first sealing ring is tightly fitted to the inner sidewall of the storage area.
[0019] Preferably, the bottom of the battery compartment is provided with two large wheels near the left side, and the number of the large wheels is symmetrically distributed. The right end of the second fixing member is fixedly connected to a towing connector.
[0020] Preferably, the upper end of the hydraulic rod is hinged to the bottom of the second fixing member, and a small wheel is installed at the bottom of the connecting rod.
[0021] Preferably, a first guide rod is vertically fixedly connected inside the support slide rail, the outer surface of the first guide rod is slidably connected to the first slider, a first spring is sleeved on the outer side of the first guide rod, the top of the first spring is tightly fitted with the second fixing member, and the bottom of the first spring is tightly fitted with the first slider.
[0022] Preferably, there are two first slide grooves distributed front to back, and two slide plates corresponding one-to-one with the first slide grooves.
[0023] Preferably, a second guide rod is fixedly connected to the rear inner wall of the first slide groove, and a second spring is sleeved on the outer surface of the second guide rod. The front end of the second spring is tightly fitted with the slide plate, and the rear end of the second spring is tightly fitted with the rear inner wall of the first slide groove.
[0024] Preferably, a second sealing ring is fixedly connected to the outer side of the slide plate, and the outer surface of the second sealing ring is tightly fitted to the inner sidewall of the charging port.
[0025] Preferably, a second slide groove is provided at the bottom of the slide plate near the outer side, a third spring is fixedly connected to the top inner wall of the second slide groove, a second slider is slidably connected to the inner wall of the second slide groove, the bottom of the third spring is tightly fitted with the second slider, a limiting member is fixedly connected to the bottom of the second slider, a limiting hole is provided at the bottom of the sunshade, and the lower end of the limiting member passes through the second slide groove and is inserted into the limiting hole.
[0026] (III) Beneficial Effects
[0027] This invention provides a replaceable battery compartment for towed vehicles in new energy vehicles. It has the following beneficial effects:
[0028] This new energy vehicle features a replaceable battery compartment with a towable design and wheels, making docking and movement convenient and solving the problem of carrying traditional external batteries. The replaceable battery design makes it easy to put in and take out, shortens charging time, and alleviates range anxiety. Multiple sealing structures and status monitoring functions enhance safety and reduce usage risks. The shock absorption mechanism uses springs and hydraulic rods to buffer bumps, protect the battery, and extend its life. The sunshade mechanism can be expanded and locked easily, enhancing adaptability to charging environments and improving the user experience. Overall, it has significant advantages in range efficiency, safety, and adaptability, providing reliable energy security for outdoor travel. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the internal structure of the present invention;
[0030] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0031] Figure 3 This is a front view of the present invention;
[0032] Figure 4 This is a schematic diagram of the shock absorption and protection structure of the present invention;
[0033] Figure 5 This is a schematic diagram of the retractable sunshade of the present invention;
[0034] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.
[0035] The components include: 1. Battery compartment; 2. Status display screen; 3. Large wheels; 4. First fixing component; 5. Second fixing component; 6. Trailer connector; 7. Charging port; 8. Sunshade cover; 9. Charger; 10. Storage area; 11. Battery; 12. Cover plate; 13. First sealing ring; 14. Second sealing ring; 15. Support rail; 16. First slider; 17. Hydraulic rod; 18. Connecting rod; 19. Small wheels; 20. First guide rod; 21. First spring; 22. Slide plate; 23. First slide groove; 24. Second spring; 25. Second guide rod; 26. Second slide groove; 27. Third spring; 28. Second slider; 29. Limiting component; 30. Limiting hole. Detailed Implementation
[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0037] like Figure 1-6 As shown, this embodiment of the invention provides a replaceable battery compartment for a new energy vehicle trailer, including a battery compartment body 1, a status display screen 2 disposed near the left side of the front end of the battery compartment body 1, a charging port 7 disposed near the middle of the front end of the battery compartment body 1, a charger 9 disposed inside the charging port 7, a storage compartment 10 disposed near the right side of the front end of the battery compartment body 1, a battery 11 disposed inside the storage compartment 10, a cover 12 that opens to the right disposed at the front end of the storage compartment 1, a first fixing member 4 fixedly connected to the bottom of the battery compartment body 1 near the right end, a second fixing member 5 fixedly connected to the lower end of the first fixing member 4, a sunshade mechanism disposed at the front end of the charging port 7, and a shock absorption protection mechanism disposed at the bottom of the second fixing member 5.
[0038] A first sealing ring 13 is fixedly connected to the outer side of the cover plate 12. The outer surface of the first sealing ring 13 is tightly fitted to the inner side wall of the storage area 10. Two large wheels 3 are provided near the left side of the bottom of the battery compartment 1. The large wheels 3 are symmetrically distributed and bear the main load. A towing connector 6 is fixedly connected to the right end of the second fixing member 5. The towing connector 6 is connected to the hook at the rear of the car.
[0039] Vibration damping and protection mechanisms include:
[0040] The bottom of the second fixing member 5 is fixedly connected to the support slide rail 15.
[0041] The first slider 16 is slidably connected to the inner wall of the support rail 15.
[0042] The connecting rod 18 is fixedly connected to the two first sliders 16.
[0043] Hydraulic rod 17, the bottom of which is fixedly connected to connecting rod 18.
[0044] The upper end of the hydraulic rod 17 is hinged to the bottom of the second fixing member 5. A small wheel 19 is installed at the bottom of the connecting rod 18. The first guide rod 20 is vertically fixed inside the support slide rail 15. The outer surface of the first guide rod 20 is slidably connected to the first slider 16. A first spring 21 is sleeved on the outer side of the first guide rod 20. The top of the first spring 21 is tightly fitted to the second fixing member 5, and the bottom of the first spring 21 is tightly fitted to the first slider 16.
[0045] Shading mechanisms include:
[0046] The front end of the sunshade 8 and the charging port 7 are hinged to the upward-opening sunshade 8.
[0047] The first slide groove 23 is located inside the sunshade cover 8.
[0048] The inside of the first groove 23 is slidably connected to the slide plate 22.
[0049] There are two first slide grooves 23, distributed front and back. There are two slide plates 22, each corresponding to one of the first slide grooves 23. A second guide rod 25 is fixedly connected to the rear inner wall of the first slide groove 23. A second spring 24 is sleeved on the outer surface of the second guide rod 25. The front end of the second spring 24 is in close contact with the slide plate 22, and the rear end of the second spring 24 is in close contact with the rear inner wall of the first slide groove 23. A second sealing ring 14 is fixedly connected to the outer side of the slide plate 22. The outer surface of the second sealing ring 14 is in close contact with the inner surface of the charging port 7. The sidewalls fit tightly together, acting as a waterproof seal. A second slide groove 26 is provided at the bottom of the slide plate 22 near the outer side. A third spring 27 is fixedly connected to the top inner wall of the second slide groove 26. A second slider 28 is slidably connected to the inner wall of the second slide groove 26. The bottom of the third spring 27 fits tightly with the second slider 28. A limiting member 29 is fixedly connected to the bottom of the second slider 28. A limiting hole 30 is provided at the bottom of the sunshade 8. The lower end of the limiting member 29 passes through the second slide groove 26 and is inserted into the limiting hole 30.
[0050] Working Principle: This new energy vehicle towable replaceable battery compartment focuses on towing portability, battery 11 replacement, and safety protection. Its functions are achieved through the coordinated operation of various mechanisms. The entire unit serves as an external replaceable battery 11 supplementary device, connected to the rear hook of the vehicle via the towing connector 6 at the right end of the second fixing component 5. The large wheel 3 on the left side of the bottom of the battery compartment 1 bears the main load, while the small wheel 19 at the bottom of the second fixing component 5 assists in steering and shock absorption, ensuring smooth movement during towing. The battery 11 is stored in the storage area 10 on the right side of the front of the battery compartment 1. The cover 12 opens to the right; when closed, the outer first sealing ring 13 fits tightly against the inner wall of the storage area 10, achieving a waterproof and dustproof seal. Opening the cover 12 allows for quick access to and from the battery 11 without complex disassembly. The status display screen 2 shows real-time information such as battery power and temperature, allowing users to easily monitor the battery's status.
[0051] During charging, the charger 9 inside the charging port 7 can be connected to an external power source to charge the battery 11 in the storage compartment 10. The sunshade 8 hinged at the front end of the charging port 7 can be opened upwards to block sunlight and rain. The sliding plate 22 inside can slide outwards along the first sliding groove 23. It is guided by the second guide rod 25 and reset by the second spring 24 to expand the sunshade area. When the sunshade 8 is closed and the sliding plate 22 is reset, the second sealing ring 14 on the outside of the sliding plate 22 fits tightly against the inner wall of the charging port 7 to strengthen the seal. The locking and unfolding of the sliding plate 22 is achieved by a limiting mechanism. The third spring 27 in the second sliding groove 26 at the bottom pushes the second slider 28 and the limiting member 29 downwards. A limiting hole 30 is provided at the bottom of the sunshade 8. When the sunshade 8 is closed, the lower end of the limiting member 29 passes through the second sliding groove 26 and is inserted into the limiting hole 30 to lock the sliding plate 22.
[0052] When the skateboard 22 needs to be unfolded, press the limiting member 29 into the sunshade 8. The second slider 28 compresses the third spring 27 and slides upward along the second slide groove 26, causing the limiting member 29 to disengage from the limiting hole 30, thereby unfolding the skateboard 22. When towing, the shock absorption protection mechanism plays a role. The support slide rail 15 at the bottom of the second fixing member 5 provides a vertical sliding track for the first slider 16. The first guide rod 20 restricts its sliding direction. The first spring 21 on the outside of the first guide rod 20 is always in a compressed state. When the road bumps cause the small wheel 19 to vibrate upward, the first slider 16 slides upward along the support slide rail 15 to compress the first spring 21. The elastic potential energy of the first spring 21 absorbs part of the vibration energy. At the same time, the upper end of the hydraulic rod 17 is hinged to the bottom of the second fixing member 5 and the lower end is fixed to the connecting rod 18. It extends and retracts with the first slider 16. The hydraulic oil damping effect slows down the vibration speed and avoids secondary vibration caused by the rebound of the first spring 21. The combination of the buffer of the first spring 21 and the damping of the hydraulic rod 17 ensures the stability of the battery 11.
[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A replaceable battery compartment for a new energy vehicle trailer, characterized in that, include: A battery compartment (1) is provided with a status display screen (2) near the left side of the front end of the battery compartment (1), a charging port (7) is provided near the middle of the front end of the battery compartment (1), a charger (9) is provided inside the charging port (7), a storage area (10) is provided near the right side of the front end of the battery compartment (1), a battery (11) is placed inside the storage area (10), a cover (12) that opens to the right is provided at the front end of the storage area (10), a first fixing member (4) is fixedly connected to the bottom of the battery compartment (1) near the right end, a second fixing member (5) is fixedly connected to the lower end of the first fixing member (4), a sunshade mechanism is provided at the front end of the charging port (7), and a shock absorption protection mechanism is provided at the bottom of the second fixing member (5). The shock absorption protection mechanism includes: Support slide rail (15), the bottom of the second fixing member (5) is fixedly connected to the support slide rail (15); The first slider (16) is slidably connected to the inner wall of the supporting slide rail (15); The connecting rod (18) is fixedly connected between the two first sliders (16); Hydraulic rod (17), the bottom of hydraulic rod (17) is fixedly connected to connecting rod (18); The sunshade mechanism includes: The front end of the charging port (7) is hinged to the upward-opening sunshade (8); The first groove (23) is located inside the sunshade (8); The slide plate (22) is slidably connected to the interior of the first groove (23).
2. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: The outer side of the cover plate (12) is fixedly connected with a first sealing ring (13), and the outer surface of the first sealing ring (13) is tightly fitted with the inner wall of the storage place (10).
3. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: The bottom of the battery compartment (1) is provided with two large wheels (3) near the left side. The number of large wheels (3) is two and they are symmetrically distributed. The right end of the second fixing member (5) is fixedly connected to a towing connector (6).
4. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: The upper end of the hydraulic rod (17) is hinged to the bottom of the second fixing member (5), and a small wheel (19) is installed at the bottom of the connecting rod (18).
5. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: The support slide rail (15) is vertically fixedly connected to a first guide rod (20). The outer surface of the first guide rod (20) is slidably connected to the first slider (16). A first spring (21) is sleeved on the outer side of the first guide rod (20). The top of the first spring (21) is tightly fitted with the second fixing member (5), and the bottom of the first spring (21) is tightly fitted with the first slider (16).
6. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: There are two first slide grooves (23) distributed front and back, and there are two slide plates (22) that correspond one-to-one with the first slide grooves (23).
7. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: A second guide rod (25) is fixedly connected to the rear inner wall of the first slide groove (23). A second spring (24) is sleeved on the outer surface of the second guide rod (25). The front end of the second spring (24) is tightly fitted with the slide plate (22), and the rear end of the second spring (24) is tightly fitted with the rear inner wall of the first slide groove (23).
8. The replaceable battery compartment for new energy vehicle trailers according to claim 1, characterized in that: The outer side of the slide plate (22) is fixedly connected with a second sealing ring (14), and the outer surface of the second sealing ring (14) is tightly fitted with the inner sidewall of the charging port (7).
9. The replaceable battery compartment for a new energy vehicle trailer according to claim 1, characterized in that: The bottom of the slide plate (22) is provided with a second slide groove (26) near the outer side. A third spring (27) is fixedly connected to the top inner wall of the second slide groove (26). A second slider (28) is slidably connected to the inner wall of the second slide groove (26). The bottom of the third spring (27) is tightly fitted with the second slider (28). A limiting member (29) is fixedly connected to the bottom of the second slider (28). A limiting hole (30) is provided at the bottom of the sunshade (8). The lower end of the limiting member (29) passes through the second slide groove (26) and is inserted into the limiting hole (30).