CN108899886A - A kind of electric motor coach prevents the device and its working method of reverse power connection - Google Patents
A kind of electric motor coach prevents the device and its working method of reverse power connection Download PDFInfo
- Publication number
- CN108899886A CN108899886A CN201810861805.3A CN201810861805A CN108899886A CN 108899886 A CN108899886 A CN 108899886A CN 201810861805 A CN201810861805 A CN 201810861805A CN 108899886 A CN108899886 A CN 108899886A
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- China
- Prior art keywords
- diode
- ecu
- power supply
- electric motor
- prevents
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses devices and its working method that a kind of electric motor coach prevents reverse power connection, it includes power supply that wherein electric motor coach, which prevents the device of reverse power connection, first diode, second diode, third diode, 4th diode and ECU, first diode, the second diode, third diode and the 4th diode combinations become rectifier bridge, and the rectified bridge of electric current is powered to ECU unit.
Description
Technical field：
The present invention relates to devices and its working method that a kind of electric motor coach prevents reverse power connection.
Background technique：
With the development of science and technology, the ECU number that integral new-energy passenger is included is more and more, cost is higher and higher therewith.By
In car wiring be one wire system the reason of, the reversal connection of electric power polarity may cause the damage of ECU motherboard power supply module, even more serious
The case where lead to ECU and harness short-circuit fire, driver and passenger are damaged.
Summary of the invention：
The present invention is to provide a kind of electric motor coach in order to solve the above-mentioned problems of the prior art to prevent reverse power connection
Device and its working method.
The present invention adopts the following technical scheme that：A kind of electric motor coach prevents the device of reverse power connection, including power supply, and the one or two
Pole pipe, the second diode, third diode, the 4th diode and ECU, first diode, the second diode, third diode
And the 4th diode combinations become rectifier bridge, the rectified bridge of electric current give ECU unit power supply.
The present invention also adopts the following technical scheme that：A kind of electric motor coach prevents the working method of the device of reverse power connection, packet
Include following steps：
When I end of power supply is anode, and II end of power supply is cathode, electric current flows into ECU, the electricity of ECU outflow through first diode
It flows through the 4th diode and flows into II end of power supply, forming circuit, if this ECU is resistance sense component, the second diode plays afterflow two
The effect of pole pipe；
When I end of power supply is cathode, and II end of power supply is anode, electric current flows into ECU, the electricity of ECU outflow through third diode
It flows through the second diode and flows into I end of power supply, forming circuit, if this ECU is resistance sense component, the 4th diode plays two pole of afterflow
The effect of pipe.
The present invention has the advantages that：On the basis of existing car strand design, increases component and protect safely
The redundancy of shield improves the serious forgiveness of strand design, reduces because losing caused by harness mistake.The invention is easy to operate, uses
It is convenient.
Detailed description of the invention：
Fig. 1 is the schematic diagram for the device that electric motor coach of the present invention prevents reverse power connection.
Specific embodiment：
The present invention will be further described below with reference to the drawings.
As shown in Figure 1, electric motor coach of the present invention prevents the device of reverse power connection, including power supply, and first diode 1, second
Diode 2, third diode 3, the 4th diode 4 and ECU.Wherein electric power polarity is uncertain, and four diode combinations become whole
Bridge is flowed, the rectified bridge of electric current is powered to ECU unit.
Electric motor coach of the present invention prevents the working method of the device of reverse power connection, includes the following steps：
When I end of power supply is anode, and II end of power supply is cathode, electric current flows into ECU, the electricity of ECU outflow through first diode 1
It flows through the 4th diode 4 and flows into II end of power supply, forming circuit.If this ECU is resistance sense component, the second diode 2 plays afterflow
The effect of diode；
When I end of power supply is cathode, and II end of power supply is anode, electric current flows into ECU, the electricity of ECU outflow through third diode 3
It flows through the second diode 2 and flows into I end of power supply, forming circuit.If this ECU is resistance sense component, the 4th diode 4 plays afterflow two
The effect of pole pipe.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (2)
1. the device that a kind of electric motor coach prevents reverse power connection, it is characterised in that：Including power supply, first diode (1), the two or two
Pole pipe (2), third diode (3), the 4th diode (4) and ECU, first diode (1), the second diode (2), the three or two
Pole pipe (3) and the 4th diode (4) are combined into rectifier bridge, and the rectified bridge of electric current is powered to ECU unit.
2. the working method that a kind of electric motor coach prevents the device of reverse power connection, it is characterised in that：Include the following steps：
When I end of power supply is anode, and II end of power supply is cathode, electric current flows into ECU, the electric current of ECU outflow through first diode (1)
II end of power supply, forming circuit are flowed into through the 4th diode (4), if this ECU is resistance sense component, the second diode (2) rises continuous
Flow the effect of diode；
When I end of power supply is cathode, and II end of power supply is anode, electric current flows into ECU, the electric current of ECU outflow through third diode (3)
I end of power supply, forming circuit are flowed into through the second diode (2), if this ECU is resistance sense component, the 4th diode (4) plays afterflow
The effect of diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861805.3A CN108899886A (en) | 2018-08-01 | 2018-08-01 | A kind of electric motor coach prevents the device and its working method of reverse power connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861805.3A CN108899886A (en) | 2018-08-01 | 2018-08-01 | A kind of electric motor coach prevents the device and its working method of reverse power connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108899886A true CN108899886A (en) | 2018-11-27 |
Family
ID=64352947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810861805.3A Pending CN108899886A (en) | 2018-08-01 | 2018-08-01 | A kind of electric motor coach prevents the device and its working method of reverse power connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108899886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
-
2018
- 2018-08-01 CN CN201810861805.3A patent/CN108899886A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination |