CN209955769U - High-voltage interlocking loop of electric automobile - Google Patents
High-voltage interlocking loop of electric automobile Download PDFInfo
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- CN209955769U CN209955769U CN201920049822.7U CN201920049822U CN209955769U CN 209955769 U CN209955769 U CN 209955769U CN 201920049822 U CN201920049822 U CN 201920049822U CN 209955769 U CN209955769 U CN 209955769U
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- air conditioner
- contactor
- voltage interlocking
- voltage
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Abstract
The utility model discloses an electric automobile high-voltage interlocking loop, which comprises a main high-voltage interlocking loop and an air conditioner high-voltage interlocking loop connected with the high-voltage interlocking loop through a CAN bus; the main high-voltage interlocking loop is provided with a main high-voltage interlocking switch, an air conditioner high-voltage interlocking switch and a first maintenance interlocking switch which are connected in series; an air conditioner electric compressor interlocking switch, an air conditioner PTC heater interlocking switch and a second maintenance interlocking switch which are mutually connected in series are arranged on the air conditioner high-voltage interlocking loop; the utility model discloses circuit design is simple, and is with low costs, and the security is high.
Description
Technical Field
The utility model relates to an electric automobile high pressure interlocking return circuit.
Background
At present, a high-voltage interlocking loop is an important system for realizing high-voltage safety of an electric automobile. The interlocking switches are connected in series with the control circuit to form a loop, and if more than one of the switches is disconnected, the controller can automatically cut off the high-voltage circuit, so that the safety is ensured. There are two types of interlock switches: one is for the high-voltage component assembly, install in positions such as high-pressure socket connector, high-pressure assembly cover, etc., under the normal operating condition, the interlock switch is closed, if the operating personnel pulls out the high-pressure socket connector or opens the high-pressure assembly cover under the situation of not breaking the high voltage electricity, will cut off the high-pressure circuit automatically; the other type is an interlocking switch for maintenance and detection, which is arranged near a related line and is convenient to operate, and when high-voltage power failure is needed, the interlocking switch can be directly pulled out under the power-off condition so as to detect and maintain the vehicle. However, the existing mode is complex in design, high in cost and incapable of guaranteeing safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric automobile high pressure interlocking return circuit to the defect that prior art exists.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: a high-voltage interlocking loop of an electric automobile comprises a main high-voltage interlocking loop and an air conditioner high-voltage interlocking loop connected with the high-voltage interlocking loop through a CAN bus; the main high-voltage interlocking loop is provided with a main high-voltage interlocking switch, an air conditioner high-voltage interlocking switch and a first maintenance interlocking switch which are connected in series; an air conditioner electric compressor interlocking switch, an air conditioner PTC heater interlocking switch and a second maintenance interlocking switch which are mutually connected in series are arranged on the air conditioner high-voltage interlocking loop;
the main high-voltage interlocking loop comprises a power battery assembly, and the positive end of the power battery assembly is connected with the input end of the air conditioner high-voltage interlocking loop through a positive contactor; the negative end of the power battery assembly is connected with the output end of the air conditioner high-voltage interlocking loop through a negative contactor;
the air conditioner high-voltage interlocking loop comprises a main contactor, a pre-charging resistor, a pre-charging contactor, an air conditioner electric compressor contactor and an air conditioner PTC heater contactor; the pre-charging resistor is connected with the pre-charging contactor in series and then is connected with the main contactor in parallel; the input of main contactor with anodal contactor is connected, the output of main contactor passes through air conditioner electric compressor contactor with air conditioner electric compressor's control input end is connected, the output of main contactor passes through air conditioner PTC heater contactor with air conditioner PTC heater's control input end is connected.
The utility model has the advantages that: the utility model discloses circuit design is simple, and is with low costs, and the security is high.
Drawings
Fig. 1 is a schematic block diagram of the system of the present invention.
Fig. 2 is a schematic diagram of the system control of the present invention.
Detailed Description
Fig. 1 shows that an electric vehicle high-voltage interlock loop is disclosed, which comprises a main high-voltage interlock loop 10 and an air conditioner high-voltage interlock loop 20 connected with the high-voltage interlock loop 10 through a CAN bus; the main high-voltage interlocking loop 10 is provided with a main high-voltage interlocking switch 11, an air conditioner high-voltage interlocking switch 12 and a first maintenance interlocking switch 13 which are connected in series; an air conditioner electric compressor interlocking switch 21, an air conditioner PTC heater interlocking switch 22 and a second maintenance interlocking switch 23 which are mutually connected in series are arranged on the air conditioner high-voltage interlocking loop 20;
the main high-voltage interlocking loop 10 comprises a power battery assembly (in fig. 1, a first power battery 3 and a second power battery 3 which are connected in series with each other), and the positive end of the power battery assembly is connected with the input end of an air conditioner high-voltage interlocking loop 20 through a positive contactor 4; the negative end of the power battery assembly is connected with the output end of the air conditioner high-voltage interlocking loop through a negative contactor 1;
the air conditioner high-voltage interlocking loop 20 comprises a main contactor 5, a pre-charging resistor 6, a pre-charging contactor 7, an air conditioner electric compressor contactor 8 and an air conditioner PTC heater contactor 9; the pre-charging resistor 6 and the pre-charging contactor 7 are connected in series and then are connected in parallel with the main contactor 5; the input of main contactor 5 with anodal contactor 4 is connected, the output of main contactor 5 passes through air conditioner electric compressor contactor 8 with air conditioner electric compressor's control input end is connected, the output of main contactor 5 passes through air conditioner PTC heater contactor 9 with air conditioner PTC heater's control input end is connected.
As shown in fig. 2, the control principle is as follows: the main high-voltage interlocking loop 10 and the air conditioner high-voltage interlocking loop 20 are arranged as two high-voltage interlocking loops; the main high-voltage interlocking loop 10 controls the positive contactor, the negative contactor, the main contactor and the pre-charging contactor, and as long as 1 or more of the main high-voltage interlocking switch 11, the air-conditioning high-voltage interlocking switch 12 and the first maintenance interlocking switch 13 are disconnected, the main high-voltage interlocking loop 10 controls the positive contactor, the negative contactor, the main contactor and the pre-charging contactor to be disconnected, the whole automobile has no high voltage, the electric automobile cannot be powered on to run and charged, and an air-conditioning refrigeration and heating system cannot work. The air conditioner high-voltage interlocking loop 20 controls an air conditioner electric compressor contactor and an air conditioner PTC heater contactor, and as long as 1 or more of the air conditioner electric compressor interlocking switch 21, the air conditioner PTC heater interlocking switch 22 and the second maintenance interlocking switch 23 are disconnected, the air conditioner high-voltage interlocking loop 20 controls the air conditioner electric compressor contactor and the air conditioner PTC heater contactor to be disconnected, the air conditioner cannot be started for refrigeration or heating, but the electric automobile is not influenced to be electrified and driven and charged, and an instrument can report air conditioner high-voltage fault information and needs to be maintained as soon as possible.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (1)
1. The high-voltage interlocking circuit of the electric automobile is characterized by comprising a main high-voltage interlocking circuit and an air conditioner high-voltage interlocking circuit, wherein the air conditioner high-voltage interlocking circuit is connected with the high-voltage interlocking circuit through a CAN bus; the main high-voltage interlocking loop is provided with a main high-voltage interlocking switch, an air conditioner high-voltage interlocking switch and a first maintenance interlocking switch which are connected in series; an air conditioner electric compressor interlocking switch, an air conditioner PTC heater interlocking switch and a second maintenance interlocking switch which are mutually connected in series are arranged on the air conditioner high-voltage interlocking loop;
the main high-voltage interlocking loop comprises a power battery assembly, and the positive end of the power battery assembly is connected with the input end of the air conditioner high-voltage interlocking loop through a positive contactor; the negative end of the power battery assembly is connected with the output end of the air conditioner high-voltage interlocking loop through a negative contactor;
the air conditioner high-voltage interlocking loop comprises a main contactor, a pre-charging resistor, a pre-charging contactor, an air conditioner electric compressor contactor and an air conditioner PTC heater contactor; the pre-charging resistor is connected with the pre-charging contactor in series and then is connected with the main contactor in parallel; the input of main contactor with anodal contactor is connected, the output of main contactor passes through air conditioner electric compressor contactor with air conditioner electric compressor's control input end is connected, the output of main contactor passes through air conditioner PTC heater contactor with air conditioner PTC heater's control input end is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049822.7U CN209955769U (en) | 2019-01-13 | 2019-01-13 | High-voltage interlocking loop of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049822.7U CN209955769U (en) | 2019-01-13 | 2019-01-13 | High-voltage interlocking loop of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209955769U true CN209955769U (en) | 2020-01-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920049822.7U Withdrawn - After Issue CN209955769U (en) | 2019-01-13 | 2019-01-13 | High-voltage interlocking loop of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209955769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693544A (en) * | 2019-01-13 | 2019-04-30 | 无锡商业职业技术学院 | A kind of electric automobile high-voltage interlocking loop |
-
2019
- 2019-01-13 CN CN201920049822.7U patent/CN209955769U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693544A (en) * | 2019-01-13 | 2019-04-30 | 无锡商业职业技术学院 | A kind of electric automobile high-voltage interlocking loop |
| CN109693544B (en) * | 2019-01-13 | 2023-12-08 | 无锡商业职业技术学院 | High-voltage interlocking loop of electric automobile |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Kunshan Youke automobile design Service Co.,Ltd. Assignor: WUXI INSTITUTE OF COMMERCE Contract record no.: X2021320010001 Denomination of utility model: A high voltage interlock circuit for electric vehicle Granted publication date: 20200117 License type: Common License Record date: 20210125 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200117 Effective date of abandoning: 20220530 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200117 Effective date of abandoning: 20220530 |