CN103715013A - Relay anti-adhesion circuit - Google Patents
Relay anti-adhesion circuit Download PDFInfo
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- CN103715013A CN103715013A CN201310696486.2A CN201310696486A CN103715013A CN 103715013 A CN103715013 A CN 103715013A CN 201310696486 A CN201310696486 A CN 201310696486A CN 103715013 A CN103715013 A CN 103715013A
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Abstract
The invention provides a relay anti-adhesion circuit comprising a first relay and a second relay which comprise two-path contact points, a first XNOR gate and a second XNOR gate. The first-path contact points of the two relays are both connected in an application circuit. The second-path contact points and the first-path contact points are simultaneously controlled to act so that a signal reflecting the adhesion state of the first-path contact points is outputted. The input end of the first XNOR gate is respectively connected with a control signal of the first relay and the adhesion state signal of the first relay, and the output end is connected with a control circuit of the second relay. The input end of the second XNOR gate is respectively connected with the control signal of the second relay and the adhesion state signal of the second relay, and the output end is connected with the control circuit of the first relay. When an adhesion fault occurs in the relay with passing of high current, the situation can be timely reported and connection of the other relay can be cut off so that safety performance and reliability of an electric vehicle can be greatly enhanced, functions can be realized only by using a few commonly used components and parts, and thus the relay anti-adhesion circuit is low in cost.
Description
Technical field
The present invention relates to a kind of battery of electric vehicle management system, especially a kind of relay anti-adhesion circuit.
Background technology
Batteries of electric automobile capacity is increasing at present, and voltage is more and more higher, by the break-make between Control electrokinetic cell and motor, often runs into relay adhesion problems, causes relay to be failed to act when one should, and brings the danger that is difficult to expectation.
The method that existing battery management system adopts battery positive and negative electrode to control separately mostly, anodal and negative pole and motor is connected respectively by a Control, two relays, respectively by two port controlling of ECU, also need two relay adhesion state-detection ports in addition.Relay adhesion state completes judgement by software and deals with, takies ECU resource many.Only adopt one-side treatment measures, reliability is short of to some extent.
Summary of the invention
In view of this, the invention provides a kind of reliable and stable relay anti-adhesion circuit.
The design that the present invention takes is:
A kind of relay anti-adhesion circuit, comprise having the first relay, second relay of two-way contact, the first via contact of two relays is all connected in application circuit, the controlled action simultaneously of the second contact, tunnel and first via contact, the adhesion status signal of output-response first via contact; The first same or door, its input accesses respectively the control signal of the first relay and the adhesion status signal of the first relay; Output connects the control circuit of the second relay; The second same or door, its input accesses respectively the control signal of the second relay and the adhesion status signal of the second relay; Output connects the control circuit of the first relay.
Concrete, described relay anti-adhesion circuit also comprises the warning circuit that is respectively used to indicate the first relay, the second relay adhesion state, the anodal power supply that connects of alarm appliance in described warning circuit, negative pole connect respectively first with or door, second with or the output of door.
Further, the control circuit of described first, second relay comprises respectively first, second auxiliary relay, first, second auxiliary relay contact is respectively used to control the break-make of first, second relay coil power supply, control coil one end connects power supply, and the other end is respectively by switch triode ground connection.
Further, the first relay control signal and second with or the common input first of door output signal and door, first controls the switch triode in the first control relay circuit with door output; The second relay control signal and first with or the common input second of door output signal and door, second controls the switch triode in the second control relay circuit with door output.By triode, stablizing control relay switch connects.
Further, described circuit application is in battery management system control circuit, and described the first relay is total positive relay in battery management system control circuit, and the second relay is always negative relay of battery management system control circuit.
Compared with prior art, tool of the present invention has the following advantages:
1, when the relay of logical super-high-current sticks together fault, by with or door and control circuit can circulate a notice of in time and cut off the connection of another one relay, the security performance of electric motor car, unfailing performance are improved greatly.2, circuit is simple, only by hardware trigger control relay, is cut off or is connected, and greatly improves the stability of circuit.3, only with a little conventional components and parts, can realize this function, with low cost.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the embodiment of the present invention.
Embodiment
In order to allow those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, relay anti-adhesion circuit application described in the present embodiment is in battery management system control circuit, comprise, the first relay 1, second relay 2 with two-way contact, the first relay 1 is total positive relay in battery management system control circuit, and the second relay 2 is always negative relay of battery management system control circuit.The controlled action simultaneously of the two contacts of two relays, is connected to the adhesion status signal of total first via contact just, in total negative wire road in battery management system by detecting the State-output reaction of the second contact, tunnel.
The first same or door L1, its input accesses respectively the control signal of the first relay 1 and the adhesion status signal of the first relay; Output connects first in the second relay 2 control circuits and door L3; The second same or door L2, its input accesses respectively the control signal of the second relay and the adhesion status signal of the second relay; Output connects second and a door L4 of the first control relay circuit.The control circuit of described first, second relay 1,2 comprises respectively first, second auxiliary relay 3,4, first, second auxiliary relay 3,4 contacts are respectively used to control the break-make of first, second relay coil power supply, control coil one end connects power supply, and the other end is respectively by switch triode T1, T2 ground connection.The first relay 1 control signal and the second same or common input first of door L2 output signal and a L3, first controls the switch triode T1 in the first control relay circuit with door L3 output; The second relay control signal and the first same or common input second of door L1 output signal and a L4, second controls the switch triode T2 in the second control relay circuit with door L4 output.Described triode is preferably NPN triode.According to above-mentioned annexation, the fault if the first relay 1 sticks together, the first relay control signal is low level, and adhesion status signal is high level, now, control signal and adhesion status signal are exported a low level together or after door through first, the second relay disconnects thereupon, in like manner, the fault if the second relay sticks together, the first relay disconnects.
Described relay anti-adhesion circuit also comprises the warning circuit that is respectively used to indicate the first relay 1, the second relay 2 adhesion states, the anodal power supplys that connect of alarm appliance LED 1 in described warning circuit, LED 2, negative pole connect respectively first with or door L1, second with or the output of door L2.The fault if the first relay 1 sticks together, control signal and adhesion status signal are exported a low level after same or door L1, and LED2 lights warning, the fault if the second relay 2 sticks together, LED1 lights warning.
It is more than preferably implementation of the present invention; it should be noted that; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (5)
1. a relay anti-adhesion circuit, comprises,
The first relay, second relay with two-way contact, the first via contact of two relays is all connected in application circuit, the controlled action simultaneously of the second contact, tunnel and first via contact, the adhesion status signal of output-response first via contact;
The first same or door, its input accesses respectively the control signal of the first relay and the adhesion status signal of the first relay; Output connects the control circuit of the second relay;
The second same or door, its input accesses respectively the control signal of the second relay and the adhesion status signal of the second relay; Output connects the control circuit of the first relay.
2. relay anti-adhesion circuit according to claim 1, it is characterized in that: also comprise the warning circuit that is respectively used to indicate the first relay, the second relay adhesion state, the anodal power supply that connects of alarm appliance in described warning circuit, negative pole connect respectively first with or door, second with or the output of door.
3. relay anti-adhesion circuit according to claim 1, it is characterized in that: the control circuit of described first, second relay comprises respectively first, second auxiliary relay, first, second auxiliary relay contact is respectively used to control the break-make of first, second relay coil power supply, control coil one end connects power supply, and the other end is respectively by switch triode ground connection.
4. relay anti-adhesion circuit according to claim 3, is characterized in that: the first relay control signal and second with or the common input first of door output signal and door, first controls the switch triode in the first control relay circuit with door output; The second relay control signal and first with or the common input second of door output signal and door, second controls the switch triode in the second control relay circuit with door output.
5. according to the relay anti-adhesion circuit described in claim 1-4 any one, it is characterized in that: described circuit application is in battery management system control circuit, described the first relay is total positive relay in battery management system control circuit, and the second relay is always negative relay of battery management system control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696486.2A CN103715013B (en) | 2013-12-18 | 2013-12-18 | A kind of relay anti-adhesion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696486.2A CN103715013B (en) | 2013-12-18 | 2013-12-18 | A kind of relay anti-adhesion circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN103715013A true CN103715013A (en) | 2014-04-09 |
| CN103715013B CN103715013B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310696486.2A Active CN103715013B (en) | 2013-12-18 | 2013-12-18 | A kind of relay anti-adhesion circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270181A (en) * | 2014-06-25 | 2016-01-27 | 广州汽车集团股份有限公司 | Intermediate relay control device, and control method thereof, and high-voltage power-down control method |
| CN105652769A (en) * | 2016-01-20 | 2016-06-08 | 苏州英纳索智能科技有限公司 | Relay anti-adhesion circuit and control method thereof |
| CN110850279A (en) * | 2019-10-08 | 2020-02-28 | 宁波吉利汽车研究开发有限公司 | Relay with adhesion self-diagnosis and forced disconnection functions, circuit and automobile |
| CN113963994A (en) * | 2021-10-15 | 2022-01-21 | 珠海格力电器股份有限公司 | Contactor that adhesion was reported to police |
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| JPH08129946A (en) * | 1994-10-31 | 1996-05-21 | Nippon Signal Co Ltd:The | Relay contact monitor |
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| CN202535043U (en) * | 2012-03-27 | 2012-11-14 | 上海宝钢工业技术服务有限公司 | Relay contact adhesion detection protective device in industrial remote controller |
| CN102874124A (en) * | 2011-07-14 | 2013-01-16 | 北汽福田汽车股份有限公司 | Relay control strategy and device for battery of electric vehicle |
| CN203588939U (en) * | 2013-12-18 | 2014-05-07 | 惠州市亿能电子有限公司 | Relay anti-adhesion circuit |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08129946A (en) * | 1994-10-31 | 1996-05-21 | Nippon Signal Co Ltd:The | Relay contact monitor |
| CN101325271A (en) * | 2008-07-30 | 2008-12-17 | 赵建和 | Device for managing equalization of series battery |
| CN102874124A (en) * | 2011-07-14 | 2013-01-16 | 北汽福田汽车股份有限公司 | Relay control strategy and device for battery of electric vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270181A (en) * | 2014-06-25 | 2016-01-27 | 广州汽车集团股份有限公司 | Intermediate relay control device, and control method thereof, and high-voltage power-down control method |
| CN105270181B (en) * | 2014-06-25 | 2017-08-22 | 广州汽车集团股份有限公司 | Electric control method under auxiliary reclay control device and its control method, high pressure |
| CN105652769A (en) * | 2016-01-20 | 2016-06-08 | 苏州英纳索智能科技有限公司 | Relay anti-adhesion circuit and control method thereof |
| CN110850279A (en) * | 2019-10-08 | 2020-02-28 | 宁波吉利汽车研究开发有限公司 | Relay with adhesion self-diagnosis and forced disconnection functions, circuit and automobile |
| CN113963994A (en) * | 2021-10-15 | 2022-01-21 | 珠海格力电器股份有限公司 | Contactor that adhesion was reported to police |
| CN113963994B (en) * | 2021-10-15 | 2022-10-21 | 珠海格力电器股份有限公司 | Contactor that adhesion was reported to police |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103715013B (en) | 2016-02-10 |
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