CN110514998A - New-energy automobile charge protection device relay on-off detection system and method - Google Patents
New-energy automobile charge protection device relay on-off detection system and method Download PDFInfo
- Publication number
- CN110514998A CN110514998A CN201910927618.5A CN201910927618A CN110514998A CN 110514998 A CN110514998 A CN 110514998A CN 201910927618 A CN201910927618 A CN 201910927618A CN 110514998 A CN110514998 A CN 110514998A
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- Prior art keywords
- relay
- pole
- triode
- protection device
- new
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The present invention relates to the new-energy automobile charge protection device relay on-off detection systems and method of circuit detection technique field, based on the double relay charging unit comprising the pole L relay and the pole N relay.The first feed circuit is set between the input terminal of the pole L relay and the output end of the pole N relay, the second feed circuit is set between the input terminal of the pole N relay and the output end of the pole L relay.By the conducting and cut-off that detect this two sections of circuits, so that it may judge the on-off of two relays.To reach self detection relay failure of system, increase the safety of user.
Description
Technical field
The present invention relates to circuit detection technique fields, and in particular to the inspection of new-energy automobile charge protection device relay on-off
Examining system and method.
Background technique
As new-energy automobile is more more and more universal, the security requirement of charging gun and charging pile is higher and higher.Charging gun
There are two relays in control panel in box and charging pile, control the on-off in two circuits L, N respectively.
Existing technology is simply by the on-off of control system control relay, and there is no the reality for being directed to each relay
On-off result carries out inspection verifying, cannot not only accomplish to position oneself failure in this way, or even bring centainly to the safety of user
Hidden danger.Once relay breaks down, if it is normal ON is unable to, then can not charge normal；If it is sticking together not
It can disconnect, then can bring the danger of electric shock to user.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art and defect, provide a kind of new-energy automobile charge protection device
Relay on-off detection system and method, can be for the method that on-off result is individually detected in two circuits L, N.
The purpose of the present invention is achieved through the following technical solutions:
New-energy automobile charge protection device relay on-off detection system, pair comprising the pole L relay and the pole N relay
Relay charging unit, in the pole L, the output end of the input terminal of relay and the pole N relay accesses the first feed circuit, In
The output end of the pole L relay and the input terminal of the pole N relay access the second feed circuit.
Specifically, the component in first feed circuit includes first diode, the first photoelectrical coupler and first
Triode, the input terminal of the pole L relay are electrically connected with the anode of first diode, and the cathode of the first diode passes through
The joint face of first photoelectrical coupler is electrically connected with the output end of the pole N relay, the output face of first photoelectrical coupler with
The base stage of first triode is electrically connected, and the emitter of first triode is electrically connected with MCU.
Specifically, the component in second feed circuit includes the second diode, the second photoelectrical coupler and second
Triode, the input terminal of the pole N relay are electrically connected with the anode of the secondth diode, and the cathode of second diode is logical
The joint face for crossing the second photoelectrical coupler is electrically connected with the output end of the pole L relay, the output face of second photoelectrical coupler
It is electrically connected with the base stage of first triode, the emitter of first triode is electrically connected with CPU.
Specifically, the collector setting biasing circuit of first triode is connected with base stage, and external electricity is accessed simultaneously
Pressure, the emitter ground connection of first triode, while being electrically connected with MCU.
Specifically, the collector setting biasing circuit of second triode is connected with base stage, and external electricity is accessed simultaneously
Pressure, the emitter ground connection of second triode, while being electrically connected with MCU.
Specifically, first feed circuit and the second feed circuit also include several protective resistances.
New-energy automobile charge protection device relay on-off detection method, utilizes the new-energy automobile charge protection
The on-off of device relay on-off detection system detection double relay charging unit.
The present invention includes the following advantages and benefits compared with prior art:
(1) the present invention provides the methods that can be directed to two circuits L, N and individually detect on-off result.Inside control panel
The on-off in the circuit will be detected by photoelectrical coupler and triode at single relay circuit per relay design all the way.To
Reach the detection whether good purpose of relay on-off.
(2) through the invention, control system can know exactly which whether the on-off of relay is good, to improve product
Self detectability, and provide the user with maximum safety guarantee.The art of this patent is applicable not only to automobile charge protection
Device is equally applicable to the charge protection device of battery truck etc. product, is readily applicable to other and needs double relay control
The protective device of energization.
Detailed description of the invention
Fig. 1 is circuit connection diagram of the invention.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is provided with, even
Connect " etc., it shall be understood in a broad sense；Term " first, second " is used for description purposes only, and is not understood to indicate or imply opposite
Importance.
As shown in Figure 1, specific implementation process of the invention is as follows:
The present invention relates to the new-energy automobile charge protection device relay on-off detection system of circuit detection technique field,
It is the double relay charging unit of the pole the N relay PL2 based on the pole the L relay PL1 and the control pole N that are provided with the control pole L
Connecting and disconnecting of the circuit detection system.In two relays, the pole the L relay both ends of the control pole L are respectively input terminal L_in and output
Hold L_out；The pole the N relay both ends for controlling the pole N are respectively input terminal N_in and output end N_out, between L_in and N_out
Design the first feed circuit, the second feed circuit designed between N_in and L_out, by detect the conducting in this two sections of circuits with
Cut-off, so that it may judge the on-off of two relays.To reach self detection relay failure of system, increase the safety of user
Property.
Specifically, L_in and L_out are set to the both ends of the pole L relay switch, N_in and N_out are set to the pole N relay
The both ends of device switch.
Component in first feed circuit includes first diode D1, the first photoelectrical coupler U1 and the first triode
The anode of the input terminal L_in and first diode D1 of the pole Q1, L relay RL1 are electrically connected, and the cathode of first diode D1 passes through
The joint face of first photoelectrical coupler U1 is electrically connected with the output end N_out of the pole N relay RL2, the first photoelectrical coupler U1's
Output face is electrically connected with the base stage of the first triode Q1, and the emitter of the first triode is electrically connected with MCU.
Specifically, protective resistance R1 is in series in the first feed circuit, between L_in and N_out, the first triode Q1
Biasing circuit is set, external voltage VDD is added on collector, the output end of emitter and photoelectrical coupler U1 connects into ground connection
Circuit, while being electrically connected by data jack with MCU.
Component in second feed circuit includes the second diode D2, the second photoelectrical coupler U2 and the second triode
The input terminal N_in of the pole Q2, N relay RL2 is electrically connected with the anode of the second diode D2, and the cathode of the second diode D2 passes through
The joint face of second photoelectrical coupler U2 is electrically connected with the output end L_out of the pole L relay RL1, the second photoelectrical coupler U2's
Output face is electrically connected with the base stage of the second triode Q2, and the emitter of the second triode Q2 is electrically connected with CPU.
Specifically, protective resistance R4 is in series in the first feed circuit, between L_in and N_out, the second triode Q2
Biasing circuit is set, external voltage VDD is added on collector, the output end of emitter and photoelectrical coupler U2 connects into ground connection
Circuit, while being electrically connected by data jack with CPU.
Specifically, the amplifier that transistor is constituted will be accomplished without distortion to amplify signal voltage, it is necessary that
The emitter junction positively biased of transistor, collector junction are reverse-biased, that is, its operating point is arranged.Make the base of transistor by the setting of external circuit
The numerical value that pole, emitter and collector are in required current potential VDD, VDD is obtained according to calculating.
Wherein, the most common function of diode is exactly that electric current is only allowed to pass through (referred to as forward bias voltage drop), electricity by single direction
(referred to as reverse bias) is blocked when flowing reversed, therefore, diode can be understood as the non-return valve of electronic edition.When the pole L relay
When the pole PL1 and N relay PL2 is worked normally, the first feed circuit and the second feed circuit are powered simultaneously, and MCU or CPU are received
Electric signal, it is on the contrary then electric signal cannot be received.
Triode has Current amplifier effect, and its essence is triodes to carry out domination set with the small variable quantity of base current
The biggish variable quantity of electrode current.This is the most basic and most important characteristic of triode.In the present invention the first triode Q1 and
Second triode Q2 selects positive-negative-positive transistor, realizes the amplification of the Weak current of base stage input, by radiating pole for electric signal
Pass to MCU or CPU.
CPU is the unit of data processing, and CPU is generally comprised in MCU, but there are also other outer other than data processing unit
The module enclosed, such as RAM, ROM, timer conter and a variety of I/O interfaces, that is to say, that MCU be integrated with CPU and other outside
The miniature control unit of boxing block.
A specific embodiment of the invention are as follows:
Starting is equipped with the double relay charging unit of detection circuit designed by the present invention, when the pole L relay and the pole N relay
When device can work normally, the first feed circuit and the second feed circuit constitute circuit, have forward current logical in first diode
It crosses, the lumination of light emitting diode in the first photoelectrical coupler is simultaneously converted to electric signal and passes to the first triode, the first triode
Emitter electric signal is fed back into MCU；Similarly there is forward current to pass through in the second diode D2, in the second photoelectrical coupler U2
Lumination of light emitting diode and be converted to electric signal and pass to the emitter of the second triode Q2, the second triode Q2 for electric signal
Feed back to CPU.The information of equipment normal operation can be obtained.
When having one or equal cisco unity malfunction among the relay PL2 of the pole the L pole relay PL1, N, the first feedback electricity
Road and the second feed circuit cannot constitute circuit, without that can lead in the feed circuit connected there are the relay input terminal of failure
The information that equipment does not run well can be obtained in the forward current for crossing diode, so that user handles unusual condition in time.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. new-energy automobile charge protection device relay on-off detection system, it is characterised in that: include the pole L relay and the pole N
The double relay charging unit of relay, in the pole L, the output end of the input terminal of relay and the pole N relay access first is anti-
Current feed circuit, in the pole L, the input terminal of the output end of relay and the pole N relay accesses the second feed circuit.
2. new-energy automobile charge protection device relay on-off detection system according to claim 1, it is characterised in that:
Component in first feed circuit includes first diode, the first photoelectrical coupler and the first triode, the pole L after
The input terminal of electric appliance is electrically connected with the anode of first diode, and the cathode of the first diode passes through the first photoelectrical coupler
Joint face is electrically connected with the output end of the pole N relay, the output face of first photoelectrical coupler and first triode
Base stage electrical connection, the emitter of first triode are electrically connected with MCU.
3. new-energy automobile charge protection device relay on-off detection system according to claim 2, it is characterised in that:
Component in second feed circuit includes the second diode, the second photoelectrical coupler and the second triode, the pole N after
The input terminal of electric appliance is electrically connected with the anode of the secondth diode, and the cathode of second diode passes through the second photoelectrical coupler
Joint face be electrically connected with the output end of the pole L relay, the output face of second photoelectrical coupler and first triode
Base stage electrical connection, the emitter of first triode is electrically connected with CPU.
4. new-energy automobile charge protection device relay on-off detection system according to claim 3, it is characterised in that:
The collector setting biasing circuit of first triode is connected with base stage, and accesses external voltage simultaneously, the one or three pole
The emitter of pipe is grounded, while being electrically connected with MCU.
5. new-energy automobile charge protection device relay on-off detection system according to claim 4, it is characterised in that:
The collector setting biasing circuit of second triode is connected with base stage, and accesses external voltage simultaneously, the two or three pole
The emitter of pipe is grounded, while being electrically connected with MCU.
6. new-energy automobile charge protection device relay on-off detection system according to claim 1, it is characterised in that:
First feed circuit and the second feed circuit also include several protective resistances.
7. new-energy automobile charge protection device relay on-off detection method, it is characterised in that: using described in claim 1-6
Any one new-energy automobile charge protection device relay on-off detection system detection double relay charging unit on-off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927618.5A CN110514998A (en) | 2019-09-27 | 2019-09-27 | New-energy automobile charge protection device relay on-off detection system and method |
| PCT/CN2020/112792 WO2021057407A1 (en) | 2019-09-27 | 2020-09-01 | New energy vehicle charging protection device relay on-off detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927618.5A CN110514998A (en) | 2019-09-27 | 2019-09-27 | New-energy automobile charge protection device relay on-off detection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110514998A true CN110514998A (en) | 2019-11-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910927618.5A Pending CN110514998A (en) | 2019-09-27 | 2019-09-27 | New-energy automobile charge protection device relay on-off detection system and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110514998A (en) |
| WO (1) | WO2021057407A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054478A (en) * | 2020-07-30 | 2020-12-08 | 广东史麦斯电器有限公司 | Power abnormity protection device of electric water heater |
| WO2021057407A1 (en) * | 2019-09-27 | 2021-04-01 | 深圳市利成科技有限公司 | New energy vehicle charging protection device relay on-off detection system and method |
| CN113640657A (en) * | 2020-12-25 | 2021-11-12 | 施耐德万高（天津）电气设备有限公司 | Tripping detection circuit and method for CB-level automatic transfer switch |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202275129U (en) * | 2011-10-28 | 2012-06-13 | 武汉阿迪克电子有限公司 | On/off detection circuit for relay of smart electricity meter |
| CN206849780U (en) * | 2017-05-09 | 2018-01-05 | 浙江英洛华新能源科技有限公司 | A kind of relay on-off detection circuit and the relay with the circuit |
| CN207299557U (en) * | 2017-10-19 | 2018-05-01 | 梅先锋 | Multifunctional intelligent safe protection water heater based on no ground wire testing principle |
| CN107688133A (en) * | 2017-10-26 | 2018-02-13 | 绵阳高新区探索科技有限责任公司 | Control box has access to electricity short-circuit detecting circuit on charging gun cable |
| US10901037B2 (en) * | 2017-11-28 | 2021-01-26 | Ontario Power Generation Inc. | Method and apparatus for monitoring status of relay |
| CN109444731A (en) * | 2018-11-08 | 2019-03-08 | 北京汇能精电科技股份有限公司 | DC relay closed state detection device |
| CN110514998A (en) * | 2019-09-27 | 2019-11-29 | 深圳市利成科技有限公司 | New-energy automobile charge protection device relay on-off detection system and method |
| CN210775763U (en) * | 2019-09-27 | 2020-06-16 | 深圳市利成科技有限公司 | Relay on-off detection system for new energy automobile charging protection device |
-
2019
- 2019-09-27 CN CN201910927618.5A patent/CN110514998A/en active Pending
-
2020
- 2020-09-01 WO PCT/CN2020/112792 patent/WO2021057407A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057407A1 (en) * | 2019-09-27 | 2021-04-01 | 深圳市利成科技有限公司 | New energy vehicle charging protection device relay on-off detection system and method |
| CN112054478A (en) * | 2020-07-30 | 2020-12-08 | 广东史麦斯电器有限公司 | Power abnormity protection device of electric water heater |
| CN113640657A (en) * | 2020-12-25 | 2021-11-12 | 施耐德万高（天津）电气设备有限公司 | Tripping detection circuit and method for CB-level automatic transfer switch |
| CN113640657B (en) * | 2020-12-25 | 2023-06-23 | 施耐德万高（天津）电气设备有限公司 | Tripping detection circuit and method of CB-level automatic transfer switch |
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| Publication number | Publication date |
|---|---|
| WO2021057407A1 (en) | 2021-04-01 |
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