CN205875982U - Take central lock controller of relay contact points protection - Google Patents
Take central lock controller of relay contact points protection Download PDFInfo
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- CN205875982U CN205875982U CN201620746339.0U CN201620746339U CN205875982U CN 205875982 U CN205875982 U CN 205875982U CN 201620746339 U CN201620746339 U CN 201620746339U CN 205875982 U CN205875982 U CN 205875982U
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Abstract
The utility model provides a take central lock controller of relay contact points protection, including connecting two relay circuit at the anodal of door lock motor and negative pole respectively, relay circuit includes relay and control relay operation's relay switch control circuit, the relay includes three contact and the coil of control contact action in order to form the relay actuation or to cut out, door lock motor's positive pole and negative pole are connected respectively to the public contact of two relays, public contact is connected with normally closed contact, normally closed contact connects the battery anodal, normally open contact and relay contact points protection circuit connection, relay switch control circuit is used for getting electric public the contact then and normally open contact contact that make according to the relay switch control signal control coil, the relay contact points protection circuit is used for changing between high -impedance state and ground state according to relay protection control signal control normally open contact. The utility model discloses can use in 24V system vehicle, reduce the door lock control system cost, improve system reliability.
Description
Technical field
This utility model relates to technical field of automobile electronic control, the central controlled lock of a kind of tape relay contact protection
Controller.
Background technology
The vehicle door lock system of present stage is controlled to be upgraded to electronic type by initial mechanical type and controls the stage, life-span and can
Have by property and significantly promote.Electronic type car door lock control system is made up of three parts: 1, logic control part (central control lock controller
Or BCM) 2, drive part (relay box).3, executable portion (door lock door-lock motor).
The merging of logic control part and drive part is had been realized in the vehicle of 12V system.Not only reduce whole
The parts cost of car and assembly cost, also improve the reliability of door-locking system.But, in the vehicle of 24V system, logic
The merging of control part and drive part implements and there is certain difficulty: the relay in relay box belongs to blade inserting relay
Device, is necessary in central control lock controller to be integrated into using PCB relay, and reliability and volume energy meets DC24V system
PCB relay there is no, PCB relay major part on the market is for 12V system.Even if by customization, allowing and continue
Blade inserting DC24V relay system is made PCB relay by electrical equipment producer, but owing to there is arcing events when contact works,
And 24V relay volume several times are more than 12V relay, the feasibility being integrated into central control lock controller is substantially zeroed: general DC12V
PCB relay volume 12mm*15mm*12mm, and general DC24V relay volume 30mm*30mm*30mm, PCB to be repacked into
Relay volume then may be bigger, and central control lock controller installing space on vehicle is limited, it is impossible to have the biggest space pre-
Staying, therefore the 24VPCB relay of large volume can not be integrated into central control lock controller.Therefore logic control in 24V vehicle
The merging of part and drive part there be difficulties involved when from cost and exploitativeness.
Utility model content
For deficiencies of the prior art, this utility model provides the middle control of a kind of tape relay contact protection
Lock controller, it can be applicable in 24V vehicle, by relay contact protection circuit by central controlled lock relay low cost
It is integrated in inside central control lock controller, reduces door lock control system cost, improve system reliability.
The central control lock controller of a kind of tape relay contact protection, including the positive pole and the negative pole that are connected to door-lock motor
Two relay circuits, described relay circuit include relay and control the actuating of relay relay switch control electricity
Road, described relay includes three contacts and controls contact action to form relay adhesive or the coil of cut out, described three
Contact is respectively common, normally opened contact and normally-closed contact, and the common of two relays connects door-lock motor respectively
Positive pole and negative pole, common is connected with normally-closed contact, and normally-closed contact connects anode, and normally opened contact is protected with relay contact
Circuit connects, and relay switch control circuit electric makes common for obtaining according to relay switch control signal control coil
Then contact with normally opened contact, described relay contact protection circuit is for controlling normally opened touching according to relay protection control signal
Point is changed between high-impedance state and ground state.
Further, described relay contact protection circuit includes metal-oxide-semiconductor and controls metal-oxide-semiconductor Guan Bi or the switch disconnected
Circuit, the drain electrode of metal-oxide-semiconductor is connected with the normally opened contact of two relays, the source ground of metal-oxide-semiconductor, the grid of metal-oxide-semiconductor and switch
The outfan of circuit connects, and described on-off circuit protects control signal for receiving relay, controls conducting or the pass of metal-oxide-semiconductor
Close, so that the drain electrode of metal-oxide-semiconductor disconnects with source electrode or is connected, and then make the normally opened contact of relay high-impedance state and ground connection
Change between state.
Further, described on-off circuit includes audion, divider resistance, and one end of divider resistance is as signal input part
Accessible relay protection control signal, the other end of divider resistance is connected with the base stage of audion, and the colelctor electrode of audion leads to
Crossing resistance and access positive voltage, the grounded emitter of audion, the colelctor electrode of audion exports as the signal of described on-off circuit
End is connected with the grid of metal-oxide-semiconductor.
Further, described audion is NPN type triode, and metal-oxide-semiconductor is N-channel MOS pipe.
Further, coil two ends are parallel with fly-wheel diode, for the reverse induction electromotive force suppressing coil to produce.
Further, between positive pole and the negative pole of door-lock motor, it is parallel with varistor, is used for suppressing outside door-lock motor
The induction electromotive force produced.
This utility model is by innovative design relay contact protection circuit and coordinates control signal logical design,
When 24VPCB relay is integrated in central control lock controller inside, can effectively prevent from occurring air to put during switching between relay contact
Electricity (i.e. electric arc) phenomenon, reduces door lock control system cost, improves system reliability.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the central control lock controller of this utility model tape relay contact protection.
In figure: 1 relay, 2 relay switch control circuits, 3 relay contact protection circuit, 4 door lock electricity
Machine, K1, K2 coil, a1, a2 common, b1, b2 normally opened contact, c1, c2 normally-closed contact, D1, D2 afterflow two
Pole is managed, R1 varistor, R2, R3, R4, R5, R6, R7 resistance, C1 electric capacity, 31 metal-oxide-semiconductors, 32 on-off circuits,
Q2 audion.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model, the technical scheme in this utility model is carried out clearly and completely
Describe.
Fig. 1 show the electrical block diagram of the central control lock controller of this utility model tape relay contact protection, institute
State the central control lock controller of tape relay contact protection and include being connected to the positive pole (M+) of door-lock motor 4 and negative pole (M-)
Two relay circuits, described relay circuit includes relay 1 and controls the relay switch control circuit of relay 1 action
2, described relay 1 includes three contacts and controls contact action to form relay 1 adhesive or the coil (K1, K2) of cut out,
Described three contacts are respectively common (a1, a2), normally opened contact (b1, b2) and normally-closed contact (c1, c2), two relays
The common (a1, a2) of 1 connects the positive pole M+ and negative pole M-of door-lock motor 4 respectively, and common (a1, a2) is touched with normally closed
Point (c1, c2) connects, and normally-closed contact (c1, c2) directly meets anode BAT, and normally opened contact (b1, b2) is protected with relay contact
Protection circuit 3 connects.
Described relay switch control circuit 2 is for receiving relay switch controlling signal, with control coil (K1, K2)
Electric after make common (a1, a2) then contact with normally opened contact (b1, b2), formation relay 1 attracting state, relay
Switch controlling signal disappear after coil (K1, K2) dead electricity, common (a1, a2) then contact with normally-closed contact (c1, c2), shape
Become relay 1 closed mode.
Coil (K1, K2) two ends are parallel with fly-wheel diode (D1, D2), and be used for suppressing coil (K1, K2) to produce is reverse
Induction electromotive force, is parallel with varistor R1 between positive pole (M+) and the negative pole (M-) of door-lock motor 4, is used for suppressing outside door lock
The induction electromotive force that motor produces.
Described relay contact protection circuit 3 includes metal-oxide-semiconductor 31 and controls the on-off circuit that metal-oxide-semiconductor 31 closes or disconnects
32, the drain electrode of metal-oxide-semiconductor 31 is connected with the normally opened contact (b1, b2) of two relays 1, and the source electrode of metal-oxide-semiconductor 31 is connect by resistance R7
Ground, the branch road that two ends parallel resistance R6 of resistance R7 and electric capacity C are in series.
The grid of metal-oxide-semiconductor 31 is connected with the outfan of on-off circuit 32, in the control of the output end signal of on-off circuit 32
Under, metal-oxide-semiconductor 31 is switched on or off, the grounded drain of metal-oxide-semiconductor 31 when metal-oxide-semiconductor 31 turns on, metal-oxide-semiconductor when metal-oxide-semiconductor 31 conducting is closed
The drain electrode of 31 is high-impedance state, so can export control signal by on-off circuit 32 so that the drain electrode of metal-oxide-semiconductor 31, that is two
The normally opened contact (b1, b2) of individual relay 1, switches between high-impedance state and ground state.
Described on-off circuit 32 includes audion Q2, divider resistance R3, R4, and relay protection control signal is by dividing potential drop electricity
Resistance R3, R4 ground connection (one end of divider resistance R3 is as the signal input part of on-off circuit 32), the node of divider resistance R3, R4 with
The base stage of audion Q2 connects, and the colelctor electrode of audion Q2 accesses positive voltage (such as+24V) by resistance R2, audion Q2's
Grounded emitter, the colelctor electrode of audion Q2 is connected with the grid of metal-oxide-semiconductor 31 as the signal output part of described on-off circuit 32.
The colelctor electrode of audion Q2 is also by resistance R5 ground connection.Described on-off circuit 32 mainly realizes switch by audion Q2 and makees
With.Described audion Q2 is NPN type triode, and metal-oxide-semiconductor 31 is N-channel MOS pipe.
Operation principle of the present utility model is as follows:
When MCU is not to on-off circuit 32 output relay protection control signal, audion Q2 ends, and metal-oxide-semiconductor 31 is also located
In cut-off state, the normally opened contact (b1, b2) of two relays 1 be off state, normally opened contact (b1, b2) is in height
Resistance state.
When MCU does not has output relay switch controlling signal (M+1, M-1) to relay switch control circuit 2, two
The common (a1, a2) of relay 1 is connected with normally-closed contact (c1, c2), now the positive pole (M+) of door-lock motor 4 and negative pole
(M-) pressure is all BAT (+24V), and door-lock motor is failure to actuate.
When needs control relay adhesive, MCU output relay switch controlling signal (M+1, M-1) gives relay switch
Control circuit 2, relay switch control signal (M+1, M-1) controls relay 1 adhesive.
Concrete, control letter when the relay switch control circuit 2 of one of them relay 1 correspondence receives relay switch
During number M+1, coil K1 obtains electric so that relay 1 adhesive, common a1 then be connected with normally opened contact b1, due to this often
Opening contact b1 and be in high-impedance state, normally-closed contact c1 will not produce atmospherical discharges phenomenon (electricity during being switched to normally opened contact b1
Arc).After common a1 completely attaches to normally opened contact b1, MCU output relay protection control signal (CGND_1) is opened
Closing circuit 32, i.e. control audion Q2 conducting, and then control metal-oxide-semiconductor 31 is also at conducting state, now normally opened contact b1 is (i.e.
CGND) being directly grounded, positive pole (M+) voltage of door-lock motor 4 is become GND (0V) from BAT (24V), the positive pole (M of door-lock motor 4
+) voltage is less than negative pole (M-) voltage, generation voltage difference E=-24V, door-lock motor 4 inverts, it is achieved (locking) action of unblanking；With
Reason, when the ON-OFF control circuit 2 of another relay 1 receives relay switch control signal M-1, normally opened contact b2 is (i.e.
CGND) being directly grounded, negative pole (M-) voltage of door-lock motor 4 is become GND (0V), the negative pole of door-lock motor 4 from BAT (24V)
(M-) voltage is less than positive pole (M+) voltage, produces voltage difference E=+24V, and door-lock motor 4 rotates forward, it is achieved locking (unblanking) action.
MCU elder generation output relay switch controlling signal (M+1, M-1), then output relay protection control signal (CGND_
1), two signal output time differences are that T1, T1 are determined according to relay adhesive T2 movement time, T1 ＞ T2.
When relay returns to off-state from attracting state, MCU first stops output relay protection control signal
(CGND_1) stopping output relay switch controlling signal (M+1, M-1), signal output time difference T3 again, T3 breaks according to relay
Open T4 movement time to determine, T3 ＞ T4.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, any belong to those skilled in the art in the technical scope that this utility model discloses, the change that can readily occur in
Change or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with power
The protection domain that profit requires is as the criterion.
Claims (6)
1. the central control lock controller of a tape relay contact protection, it is characterised in that: include being connected to door-lock motor (4)
Positive pole (M+) and two relay circuits of negative pole (M-), described relay circuit include relay (1) and control relay
(1) the relay switch control circuit (2) of action, described relay (1) includes three contacts and controls contact action to be formed
The coil (K1, K2) of relay (1) adhesive or closedown, described three contacts are respectively common (a1, a2), normally opened contact
(b1, b2) and normally-closed contact (c1, c2), the common (a1, a2) of two relays (1) connects door-lock motor (4) respectively
Positive pole (M+) and negative pole (M-), common (a1, a2) is connected with normally-closed contact (c1, c2), and normally-closed contact (c1, c2) connects battery
Positive pole, normally opened contact (b1, b2) is connected with relay contact protection circuit (3), and relay switch control circuit (2) is used for basis
Relay switch control signal (M+1, M-1) control coil (K1, K2) electric must make common (a1, a2) then touch with normally opened
Point (b1, b2) contacts, and described relay contact protection circuit (3) is for controlling normally opened contact according to relay protection control signal
(b1, b2) changes between high-impedance state and ground state.
2. the central control lock controller of tape relay contact protection as claimed in claim 1, it is characterised in that: described relay touches
Point protection circuit (3) includes metal-oxide-semiconductor (31) and controls the on-off circuit (32) that metal-oxide-semiconductor (31) closes or disconnects, metal-oxide-semiconductor (31)
Drain electrode be connected with the normally opened contact (b1, b2) of two relays (1), the source ground of metal-oxide-semiconductor (31), the grid of metal-oxide-semiconductor (31)
Pole is connected with the outfan of on-off circuit (32), and described on-off circuit (32) protects control signal for receiving relay, controls
The on and off of metal-oxide-semiconductor (31), so that the drain electrode of metal-oxide-semiconductor (31) disconnects with source electrode or is connected, and then makes relay (1)
Normally opened contact (b1, b2) change between high-impedance state and ground state.
3. the central control lock controller of tape relay contact protection as claimed in claim 2, it is characterised in that: described on-off circuit
(32) including audion (Q2), divider resistance, one end of divider resistance can be accessed by relay protection control as signal input part
Signal, the other end of divider resistance is connected with the base stage of audion (Q2), and the colelctor electrode of audion (Q2) is connect by resistance (R2)
Entering positive voltage, the grounded emitter of audion (Q2), the colelctor electrode of audion (Q2) is as the signal of described on-off circuit (32)
Outfan is connected with the grid of metal-oxide-semiconductor (31).
4. the central control lock controller of tape relay contact protection as claimed in claim 3, it is characterised in that: described audion
(Q2) being NPN type triode, metal-oxide-semiconductor (31) is N-channel MOS pipe.
5. the central control lock controller of tape relay contact protection as claimed in claim 1, it is characterised in that: coil (K1, K2)
Two ends are parallel with fly-wheel diode (D1, D2), are used for the reverse induction electromotive force suppressing coil (K1, K2) to produce.
6. the central control lock controller of tape relay contact protection as claimed in claim 1, it is characterised in that: door-lock motor (4)
Positive pole (M+) and negative pole (M-) between be parallel with varistor (R1), for the induction electric suppressing outside door-lock motor to produce
Gesture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620746339.0U CN205875982U (en) | 2016-07-15 | 2016-07-15 | Take central lock controller of relay contact points protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620746339.0U CN205875982U (en) | 2016-07-15 | 2016-07-15 | Take central lock controller of relay contact points protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205875982U true CN205875982U (en) | 2017-01-11 |
Family
ID=57695842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620746339.0U Active CN205875982U (en) | 2016-07-15 | 2016-07-15 | Take central lock controller of relay contact points protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205875982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014017A (en) * | 2016-07-15 | 2016-10-12 | 武汉神动汽车电子电器股份有限公司 | Central lock controller with relay contact protection function and control method of central lock controller |
| US20210050719A1 (en) * | 2018-12-06 | 2021-02-18 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
-
2016
- 2016-07-15 CN CN201620746339.0U patent/CN205875982U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014017A (en) * | 2016-07-15 | 2016-10-12 | 武汉神动汽车电子电器股份有限公司 | Central lock controller with relay contact protection function and control method of central lock controller |
| US20210050719A1 (en) * | 2018-12-06 | 2021-02-18 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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| GR01 | Patent grant |