Temperature-switch-controlled electric two-three-wheel lithium battery heating system
By integrating a temperature switch and a heating film onto the hardware board, the problem of the hardware board being too simple to heat up is solved, achieving both low-temperature charging performance and cost advantages.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING DAXIN NEW ENERGY AUTOMOBILE IND CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing technology, software boards are expensive and have complex functions, while hardware boards have simple functions and cannot realize heating functions, which leads to risks in low-temperature charging of lithium batteries.
The hardware board design adopts a temperature switch control, which controls the heating film through temperature changes to realize the heating function of the lithium battery. The fuse and the charging port are connected in parallel, and the heating circuit is controlled by the temperature switch.
This achieves cost advantages for the hardware board while meeting the heating requirements for low-temperature charging of lithium batteries, thus reducing costs and improving safety.
Smart Images
Figure CN224264099U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric lithium-ion tricycle technology, and in particular to a temperature-controlled electric two- and three-wheeled lithium battery heating system. Background Technology
[0002] In existing technologies, during the design of lithium batteries for electric two- and three-wheeled vehicles, the characteristics of lithium iron phosphate batteries mean that low-temperature charging can lead to lithium plating on the negative electrode, which poses a risk of reduced cycle life and internal short circuits. Therefore, current market solutions mainly employ thermal management methods such as PTC heating or liquid circulation to heat the battery and ensure the charging temperature of the lithium battery.
[0003] Currently, the lithium battery control systems for second- and third-generation vehicles mainly employ a protection board solution. Protection boards are primarily divided into two types: software boards and hardware boards.
[0004] The software board can easily control the heating film, but it is relatively expensive.
[0005] The hardware board is relatively inexpensive, but because its functions are simple, it cannot perform heating.
[0006] Therefore, this application proposes a temperature-controlled electric two- and three-wheeled lithium battery heating system to solve the above problems. Utility Model Content
[0007] The purpose of this invention is to address the shortcomings of existing technologies where software boards can easily control the heating film but are expensive, while hardware boards are cheaper but lack heating functionality due to their limited functionality. Therefore, this invention proposes a temperature-controlled electric two- and three-wheeled lithium battery heating system.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A temperature-controlled electric two- or three-wheeled lithium battery heating system, including a lithium battery hardware board protection plate;
[0010] A lithium battery module, wherein the lithium battery module is disposed within a lithium battery hardware board protective plate.
[0011] As a preferred embodiment of this utility model, heating films are provided on both sides of the lithium battery module.
[0012] As a preferred embodiment of this utility model, a fuse is provided inside the lithium battery hardware board protection plate.
[0013] As a preferred embodiment of this utility model, the lithium battery hardware board guard plate is provided with a discharge port and a charging port. The negative electrode of the lithium battery module is electrically connected to the discharge port through the lithium battery hardware board guard plate. The positive electrode of the lithium battery module is connected in parallel with the discharge port and the charging port through a fuse.
[0014] As a preferred embodiment of this utility model, a temperature switch is provided inside the lithium battery hardware board protection plate. Beneficial effects
[0015] 1. By using a temperature switch to control the heating circuit based on temperature changes, the heating circuit can be switched on and off, replacing the method of software board chip identifying temperature control. This enables the hardware board to meet the purpose of heating during lithium battery charging.
[0016] 2. The lithium battery charging and heating is completed by using a temperature switch and a hardware board, which achieves both the cost advantage of the hardware board and the effect of low-temperature charging of the lithium battery.
[0017] In this invention, the heating film is controlled by a temperature switch based on a hardware board, thereby achieving both the function of charging and heating and the goal of cost reduction. Attached Figure Description
[0018] Figure 1 This is a circuit diagram of the heating system of this utility model.
[0019] In the diagram: 1. Lithium battery hardware board protection plate; 2. Lithium battery module; 3. Heating film; 4. Temperature switch; 5. Discharge port; 6. Charging port; 7. Fuse. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example
[0021] Reference Figure 1 A temperature-controlled electric two- or three-wheeled lithium battery heating system, comprising a lithium battery hardware board protection plate 1;
[0022] Lithium battery module 2 is installed inside the lithium battery hardware board cover 1.
[0023] As a preferred embodiment of this utility model, heating films 3 are provided on both sides of the lithium battery module 2.
[0024] As a preferred embodiment of this utility model, the lithium battery hardware board guard plate 1 is provided with a fuse 7.
[0025] As a preferred embodiment of this utility model, the lithium battery hardware board guard plate 1 is provided with a discharge port 5 and a charging port 6. The negative terminal of the lithium battery module 2 is electrically connected to the discharge port 5 through the lithium battery hardware board guard plate 1, and the positive terminal of the lithium battery module 2 is connected in parallel with the discharge port 5 and the charging port 6 through the fuse 7.
[0026] As a preferred embodiment of this utility model, a temperature switch 4 is provided inside the lithium battery hardware board protection plate 1. The installation position of the temperature switch 4 must be close to the location of the module cell.
[0027] The working principle of this utility model is as follows: In actual operation, when the ambient temperature inside the battery box drops below 0°C, the temperature switch 4 closes, connecting the charging and heating circuit. If the battery is in a discharging state at this time, the heating circuit does not work. If the battery is in a charging state, because the lithium battery hardware board 1 is designed with a logic that prohibits charging below 0°C, the C-circuit of the lithium battery hardware board 1 is not closed, and the lithium battery module 2 cannot be charged. However, the power from the charger will first supply power to the heating film 3 due to the low-temperature closure of the temperature switch 4. When the heating film 3 works, the ambient temperature inside the battery box reaches above 0°C. The lithium battery hardware board 1 recognizes that the ambient temperature has reached above 0°C and will turn on the MOS transistor at C-, connecting the charging circuit. At this time, the circuit of heating and charging simultaneously is entered until the heating film 3 works and the ambient temperature inside the battery box reaches above 10°C. Then, the temperature switch 4 opens, the heating film 3 stops heating, and the production enters the normal charging mode that only charges the lithium battery module 2. Thus, the temperature switch 4 completes the purpose of using the hardware board to realize the control circuit for charging and heating the lithium battery module 2.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A temperature-controlled electric two- or three-wheeled vehicle lithium battery heating system, characterized in that, include Lithium battery hardware board protection plate (1); The lithium battery module (2) is disposed inside the lithium battery hardware board guard plate (1).
2. The temperature switch-controlled electric two- or three-wheeled lithium battery heating system according to claim 1, characterized in that, Heating films (3) are provided on both sides of the lithium battery module (2).
3. The temperature switch-controlled electric two- or three-wheeled lithium battery heating system according to claim 1, characterized in that, The lithium battery hardware board guard plate (1) is equipped with a fuse (7).
4. The temperature switch-controlled electric two- or three-wheeled lithium battery heating system according to claim 3, characterized in that, The lithium battery hardware board guard plate (1) is provided with a discharge port (5) and a charging port (6). The negative electrode of the lithium battery module (2) is electrically connected to the discharge port (5) through the lithium battery hardware board guard plate (1). The positive electrode of the lithium battery module (2) is connected in parallel with the discharge port (5) and the charging port (6) through a fuse (7).
5. A temperature-controlled electric two- or three-wheeled lithium battery heating system according to claim 1, characterized in that, The lithium battery hardware board guard plate (1) is equipped with a temperature switch (4).