New energy vehicle power supply circuit system
By designing a new energy vehicle power supply circuit system and using a high-voltage inverter to convert the 220V high-voltage circuit into a 12V low-voltage power supply, the problem that the new energy vehicle power supply circuit design is not suitable for meeting the power supply needs of the vehicle equipment, and more stable Powered by the equipment in the car.
Patent Information
- Application Number
- CN202421052669.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The power supply circuit design of new energy vehicles is not suitable for meeting the efficient power supply needs of in-vehicle equipment, especially the 12/24V low-voltage power withdrawal method from the main battery in the engine compartment cannot effectively meet the power supply needs of in-vehicle equipment.
A new energy vehicle power supply circuit system was designed, and the 220V high-voltage circuit of the original vehicle was converted into a 12V low-voltage power supply using a high-voltage inverter, and the CDU power distribution system was used to connect the DC-DC converter, dual battery isolator, and a secondary battery was installed. The group and ACC power cord switch work together to ensure stable power supply in the vehicle equipment.
The power supply circuit system can more adaptive and more stable power supply to the vehicle equipment, meet the power supply needs of the vehicle equipment, and avoid the shortcomings of traditional power supply methods.
Smart Images
Figure CN222452146U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical vehicle electronics, and in particular to a new energy vehicle power supply circuit system. Background Art
[0002] The power supply circuit of new energy vehicles is the core component of the entire vehicle electrical system. It is responsible for transmitting electrical energy from batteries or other energy sources to various components of the vehicle, such as the electric drive system, auxiliary electrical appliances, etc.
[0003] Ordinary new energy vehicles usually draw power from the 12 / 24V low-voltage main battery in the engine compartment, which is not conducive to meeting the power supply needs of in-vehicle equipment. Summary of the invention
[0004] The utility model aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the utility model proposes a new energy vehicle power supply circuit system.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A new energy vehicle power supply circuit system is proposed, including a high-voltage inverter, wherein the input end of the high-voltage inverter is connected to the original vehicle 220V socket, the output end of the high-voltage inverter is connected to the input end of the CDU power distribution system, the output end of the high-voltage inverter is respectively connected to the input end of the DC-DC converter and one end of the dual-battery isolator, the output end of the DC-DC converter is connected to the air-conditioning equipment circuit, the other end of the dual-battery isolator is respectively connected to the input end of the additional auxiliary battery pack and the input end of the ACC power line switch, the output end of the additional auxiliary battery pack is grounded, and the output end of the ACC power line switch is connected to the power supply equipment in the vehicle.
[0007] Furthermore, specifically, a leakage switch is also provided between the high-voltage inverter and the original vehicle 220V socket.
[0008] Furthermore, specifically, an FU fuse is provided between the power supply and any device of the circuit.
[0009] Further, specifically, the air conditioning equipment circuit includes:
[0010] An electric compressor, whose input end is connected to the positive pole of the CDU power distribution system, and whose output end is connected to the negative pole of the CDU power distribution system. The electric compressor is controlled and operated by an air-conditioning control system. The input end of the air-conditioning control system is connected to the positive pole of the DC-DC converter, and the output end of the air-conditioning control system is connected to the negative pole of the DC-DC converter. The air-conditioning control system is also connected to a condenser, an evaporator and a PTC heating device. The input end of the PTC heating device is connected to the positive pole of the CDU power distribution system, and the output end of the PTC heating device is connected to the negative pole of the CDU power distribution system.
[0011] Further, specifically, the CDU power distribution system outputs 12V DC on the dual-battery isolator side, and the additional auxiliary battery pack includes two batteries of model 12V / 80AH connected in series.
[0012] Furthermore, an ammeter is also provided at the grounding point of the additional auxiliary battery pack.
[0013] Furthermore, the access mode of the ACC power line switch is that when the ACC signal is connected, the ACC power line switch is closed and supplies power to the power supply equipment in the vehicle; when the ACC signal is not connected, the ACC power line switch is disconnected, and the connected disinfection lamp is lit.
[0014] The beneficial effect of the utility model is as follows: a power supply circuit system for a medical vehicle is proposed, which is based on a CDU power distribution system. Different from the ordinary 12 / 24V low-voltage power supply from the main battery in the engine compartment, this circuit draws power from the original 220V high-voltage circuit of the new energy vehicle chassis, and converts it into a 12V low-voltage power supply for the auxiliary battery and the equipment in the vehicle. It can provide power for the equipment in the vehicle more adaptably and stably, and meet the power supply needs of the equipment in the vehicle as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.
[0016] Figure 1 It is a circuit schematic diagram of the power supply circuit system of the medical vehicle of the utility model;
[0017] Figure 2 This is a circuit schematic diagram of the first part of the in-vehicle power supply device in an example of the power supply circuit system of the medical vehicle of the utility model;
[0018] Figure 3This is a schematic diagram of the second part of the circuit of the in-vehicle power supply device in an example of the utility model medical vehicle power supply circuit system;
[0019] Figure 4 It is a schematic diagram of a complete power supply circuit system of the medical vehicle power supply circuit system of the utility model in an example. DETAILED DESCRIPTION
[0020] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.
[0021] Reference Figure 1 ,
[0022] Embodiment 1. The utility model proposes a new energy vehicle power supply circuit system, including a high-voltage inverter, wherein the input end of the high-voltage inverter is connected to the original vehicle 220V socket, the output end of the high-voltage inverter is connected to the input end of the CDU power distribution system, the output end of the high-voltage inverter is respectively connected to the input end of the DC-DC converter and one end of the dual-battery isolator, the output end of the DC-DC converter is connected to the air-conditioning equipment circuit, the other end of the dual-battery isolator is respectively connected to the input end of the additional auxiliary battery pack and the input end of the ACC power line switch, the output end of the additional auxiliary battery pack is grounded, and the output end of the ACC power line switch is connected to the power supply equipment in the vehicle.
[0023] In this embodiment 1, based on the CDU power distribution system, unlike the ordinary 12 / 24V low-voltage power supply from the main battery in the engine compartment, this circuit draws power from the original 220V high-voltage circuit of the new energy vehicle chassis, and converts it into 12V low-voltage power to supply the auxiliary battery and the equipment in the vehicle. It can provide power for the equipment in the vehicle more adaptably and stably, and meet the power supply needs of the equipment in the vehicle as much as possible.
[0024] As a preferred implementation mode of the present utility model, specifically, a leakage switch is further provided between the high-voltage inverter and the original vehicle 220V socket.
[0025] In this preferred embodiment, a leakage switch is set between the high-voltage inverter and the original vehicle 220V socket. When a line fault occurs, the change in the induced current causes a tripping action to prevent people from direct or indirect electric shock.
[0026] As a preferred implementation mode of the present utility model, specifically, an FU fuse is provided between the power supply and any circuit equipment.
[0027] In this preferred embodiment, an FU fuse is added between the power supply and any device in the circuit, so as to fully protect the device from overcurrent.
[0028] As a preferred embodiment of the present utility model, specifically, the air conditioning equipment circuit includes:
[0029] An electric compressor, whose input end is connected to the positive pole of the CDU power distribution system, and whose output end is connected to the negative pole of the CDU power distribution system. The electric compressor is controlled and operated by an air-conditioning control system. The input end of the air-conditioning control system is connected to the positive pole of the DC-DC converter, and the output end of the air-conditioning control system is connected to the negative pole of the DC-DC converter. The air-conditioning control system is also connected to a condenser, an evaporator and a PTC heating device. The input end of the PTC heating device is connected to the positive pole of the CDU power distribution system, and the output end of the PTC heating device is connected to the negative pole of the CDU power distribution system.
[0030] As a preferred embodiment of the present utility model, specifically, the CDU power distribution system outputs 12V DC on the dual-battery isolator side, and the additional auxiliary battery pack includes two batteries of model 12V / 80AH connected in series.
[0031] As a preferred embodiment of the present utility model, an ammeter is also provided at the grounding point of the additional auxiliary battery pack.
[0032] As a preferred embodiment of the present utility model, the access method of the ACC power line switch is that when the ACC signal is connected, the ACC power line switch is closed and supplies power to the power supply equipment in the vehicle; when the ACC signal is not connected, the ACC power line switch is disconnected, and the connected disinfection lamp is lit.
[0033] Specifically, when applying, refer to Figure 2 , Figure 3 as well as Figure 4 , where the dotted line part is the interception line of the part that is intercepted because the figure is too large. The new energy vehicle power supply circuit system proposed by the utility model, after being applied to the specific circuit system of the new energy vehicle, can provide power for the in-vehicle equipment more adaptably and stably, and meet the power supply needs of the in-vehicle equipment as much as possible.
[0034] The above specific structures and dimensional data are specific descriptions of the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present invention. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A new energy vehicle power supply circuit system, characterized in that: It includes a high-voltage inverter, the input end of the high-voltage inverter is connected to the original vehicle 220V socket, the output end of the high-voltage inverter is connected to the input end of the CDU power distribution system, the output end of the high-voltage inverter is respectively connected to the input end of the DC-DC converter and one end of the dual-battery isolator, the output end of the DC-DC converter is connected to the air-conditioning equipment circuit, the other end of the dual-battery isolator is respectively connected to the input end of the auxiliary battery pack and the input end of the ACC power line switch, the output end of the auxiliary battery pack is grounded, and the output end of the ACC power line switch is connected to the power supply equipment in the vehicle.
2. A new energy vehicle power supply circuit system according to claim 1, characterized in that: Specifically, a leakage switch is also provided between the high-voltage inverter and the original vehicle 220V socket.
3. A new energy vehicle power supply circuit system according to claim 1, characterized in that: Specifically, an FU fuse is provided between the power supply and any device of the circuit.
4. A new energy vehicle power supply circuit system according to claim 1, characterized in that: Specifically, the air conditioning equipment circuit includes: An electric compressor, whose input end is connected to the positive pole of the CDU power distribution system, and whose output end is connected to the negative pole of the CDU power distribution system. The electric compressor is controlled and operated by an air-conditioning control system. The input end of the air-conditioning control system is connected to the positive pole of the DC-DC converter, and the output end of the air-conditioning control system is connected to the negative pole of the DC-DC converter. The air-conditioning control system is also connected to a condenser, an evaporator and a PTC heating device. The input end of the PTC heating device is connected to the positive pole of the CDU power distribution system, and the output end of the PTC heating device is connected to the negative pole of the CDU power distribution system.
5. A new energy vehicle power supply circuit system according to claim 1, characterized in that: Specifically, the CDU power distribution system outputs 12V DC on the dual-battery isolator side, and the additional auxiliary battery pack includes two batteries of model 12V / 80AH connected in series.
6. A new energy vehicle power supply circuit system according to claim 5, characterized in that: An ammeter is also provided at the grounding point of the auxiliary battery pack.
7. A new energy vehicle power supply circuit system according to claim 1, characterized in that: The access mode of the ACC power line switch is that when the ACC signal is connected, the ACC power line switch is closed and supplies power to the power supply equipment in the vehicle; when the ACC signal is not connected, the ACC power line switch is disconnected, and the connected disinfection lamp is lit.