CN207902187U - A kind of electric vehicle low pressure self saving control circuit - Google Patents
A kind of electric vehicle low pressure self saving control circuit Download PDFInfo
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- CN207902187U CN207902187U CN201820266961.0U CN201820266961U CN207902187U CN 207902187 U CN207902187 U CN 207902187U CN 201820266961 U CN201820266961 U CN 201820266961U CN 207902187 U CN207902187 U CN 207902187U
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- low pressure
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- electric vehicle
- ignition switch
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Abstract
The utility model provides a kind of electric vehicle low pressure self saving control circuit, which includes：Main relay, low pressure lock-up relay, entire car controller, ignition switch and accumulator；The main contacts of main relay is connected between the anode of accumulator and the low voltage equipment of electric vehicle, and when main contacts is closed, accumulator is powered to low voltage equipment；The coil of contact one end connection main relay of low pressure lock-up relay, the other end and main contact parallel are connected to the anode of accumulator, and when the contact closure of low pressure lock-up relay, main relay coil, which obtains, electric makes main contacts be closed；The anode of the input terminal connection accumulator of ignition switch, the input terminal of the IG shelves output ends connection entire car controller of ignition switch, the coil of the output end connection low pressure lock-up relay of entire car controller；When ignition switch gets to IG grades, entire car controller connects the coil of low pressure lock-up relay, and the coil of low pressure lock-up relay is made to obtain electric, contact closure.
Description
Technical field
The utility model is related to electric vehicle engineering field more particularly to a kind of electric vehicle low pressure self saving control circuits.
Background technology
With the gradually development and application of pure electric vehicle technology, pure electric automobile is comprehensively introduced to the market, and safety can
The control strategy leaned on directly decides the performance of product.It is well known that the electric sequence of electric vehicle is generally divided into low pressure self-test
Power on, high pressure self-test powers on, it is enabled to start, they are then phases in lower electric process respectively by each shift control of ignition switch
Anti- process avoids the accidental damage of low-voltage electrical apparatus component, this practicality to ensure the power-on and power-off safety of each low-voltage electrical apparatus component
It is novel to propose a kind of electric vehicle low pressure self saving control circuit.
Utility model content
To solve the problems of the prior art, the utility model provides a kind of electric vehicle low pressure self saving control circuit,
The circuit includes：Main relay, low pressure lock-up relay, entire car controller, ignition switch and accumulator；Wherein,
The low pressure electricity consumption that the main contacts of the main relay is connected to the anode and the electric vehicle of the accumulator is set
Between standby, when the main contacts is closed, the accumulator is used to power to the low voltage equipment；
Contact one end of the low pressure lock-up relay connects the coil of the main relay, the other end and the main contacts
It is connected in parallel to the anode of the accumulator, when the contact closure of the low pressure lock-up relay, the line of the main relay
It encloses electric the main contacts to be made to be closed；
The input terminal of the ignition switch connects the anode of the accumulator, the IG shelves output ends connection of the ignition switch
The input terminal of the entire car controller, the output end of the entire car controller connect the coil of the low pressure lock-up relay；When
When the ignition switch gets to IG grades, the entire car controller connects the coil of the low pressure lock-up relay, makes the low pressure
The coil of lock-up relay obtains electric, contact closure.
In one embodiment, the ACC shelves output ends of the ignition switch are connect with the coil of the main relay, work as institute
When stating ignition switch and getting to ACC grades, the coil of the main relay obtains electric, and main contacts is closed.
In one embodiment, the circuit further includes a reverse protection diode, is connected to the ACC of the ignition switch
On shelves output end to the circuit between the coil of the main relay.
In one embodiment, when the OFF shelves that the ignition switch is got to, the ACC shelves output end of the ignition switch is extremely
The circuit of the main relay coil powers off.
In one embodiment, battery management system, the electric machine controller of the entire car controller and the electric vehicle
And the connection of DC/DC modules, the message sent for receiving the battery management system, electric machine controller and DC/DC modules, and root
According to entire car controller itself it is lower electricity strategy output first control signal so that the low pressure lock-up relay coil losing electricity, touch
Point disconnects, to make the main contacts of the main relay disconnect.
In one embodiment, battery management system, the electric machine controller of the entire car controller and the electric vehicle
And the connection of DC/DC modules, the message sent for receiving the battery management system, electric machine controller and DC/DC modules, and root
According to the lower electricity strategy output second control signal of entire car controller itself, so that the low pressure lock-up relay coil is kept as
Electricity, contact remain closed, to make the main contacts of the main relay remain closed.
In one embodiment, the cathode ground connection of the accumulator.
In one embodiment, the coil of the main relay wherein one end is grounded.
In one embodiment, the coil of the low pressure lock-up relay wherein one end is grounded.
Using the utility model embodiment, solve asking for safe power-on and power-off of each low-voltage electrical apparatus component in Full Vehicle System
Topic, avoids the accidental damage of low-voltage electrical apparatus component；Also, auxiliary control is carried out by introducing entire car controller, if be unsatisfactory for
The lower electricity of integrated vehicle control tactics requires, even if ignition switch gets to OFF grades, vehicle low-voltage electrical apparatus component will not power off at once,
But after completing corresponding lower electricity strategy, then deenergization, ensure that electric vehicle is not in accident in course of normal operation
The accident of power-off occurs.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the electric vehicle low pressure self saving control circuit that the utility model embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is the structural schematic diagram for the electric vehicle low pressure self saving control circuit that the utility model embodiment provides.Such as Fig. 1
Shown, the circuit includes：Main relay 1, low pressure lock-up relay 2, entire car controller 3, ignition switch 4 and accumulator 5.
The main contacts 11 of main relay 1 is connected between the anode of accumulator 5 and the low voltage equipment of electric vehicle, when
When main contacts 11 is closed, accumulator 5 is used to power to the low voltage equipment.
The coil 12 of 21 one end of contact connection main relay 1 of low pressure lock-up relay 2, the other end are in parallel with main contacts 11
It is connected to the anode of accumulator 5, when the contact of low pressure lock-up relay 2 21 is closed, the coil 12 of main relay 1 electric must make master
Contact 12 is closed.
The anode of the input terminal connection accumulator 5 of ignition switch 4, the IG shelves output ends of ignition switch 4 connect full-vehicle control
The input terminal of device 3.The coil 22 of the output end connection low pressure lock-up relay 2 of entire car controller 3.When ignition switch 4 gets to IG
When shelves, entire car controller 3 connects the coil 22 of low pressure lock-up relay 2, so that the coil 22 of low pressure lock-up relay 2 is obtained electric, tactile
Point 21 is closed.
Using scheme provided by the utility model, the line of low pressure lock-up relay can be made when ignition switch gets to IG grades
Enclose electric, contact closure, it is electric to make the coil of main relay that the contact with low pressure lock-up relay connect obtain, make main relay
The main contacts of device is closed, and to connect the low voltage equipment of accumulator and electric vehicle, low voltage equipment is made not power off.This
The safety that utility model solves each low-voltage electrical apparatus component in electric automobile whole system powers on, and avoids the meaning of low-voltage electrical apparatus component
Outer damage introduces VCU (i.e. entire car controller) and assists control, ensures that normal vehicle operation is not in the process accident power-off
Accident occurs.
As shown in Figure 1, being indicated per the corresponding circle of a line gear in ignition switch 4：When opening fire, switch 4 gets to the gear
When, which hole position electrification on the gear, the current hole position of the expression of circle is not charged.For example, when ignition switch 4 is got to
At OFF grades, ST grades, IG grades, ACC grades and OFF grades of the holes a position is all charged, and since ACC grades of the hole a, b position is connected, IG grades
A, the hole b, c, d position is connected, so ACC grades of the hole a, b position is all charged, IG grades of the hole a, b, c, d position is also all charged.
In one embodiment, the cathode ground connection of accumulator 5.
In one embodiment, 12 one end of coil of main relay 1 is connect with the contact 21 of low pressure lock-up relay 2, another
End ground connection.
In one embodiment, 22 one end of coil of low pressure lock-up relay 2 is connect with the output end of entire car controller 3, separately
One end is grounded.
In one embodiment, the ACC shelves output ends of ignition switch 4 are connect with the coil 12 of main relay 1, when igniting is opened
When pass 4 gets to ACC grades, the coil 12 of main relay 1 obtains electric at this time, and main contacts 11 is closed, and vehicle low voltage equipment powers on certainly
Inspection, while this signal is input in entire car controller 3, accumulator 5 is powered to low voltage equipment.When ignition switch 4 gets to IG
When shelves, ignition signal is input in entire car controller 3, coil 22 of the 3 corresponding stitch of entire car controller to low pressure lock-up relay 2
It is powered, the contact 21 of low pressure lock-up relay 2 is closed, and connects main relay coil 12, and ensureing in normal vehicle operation will not be because
It is electric under fortuitous event low pressure to occur.In lower electric current journey, entire car controller 3 can be disconnected according to itself lower electricity strategy, judgement
Low pressure lock-up relay coil 22 completes electricity under vehicle.
In one embodiment, when the OFF shelves that ignition switch 4 is got to, the ACC shelves output ends of ignition switch 4 to main relay
The circuit of device coil 12 powers off.But the not necessarily dead electricity of main relay coil 12 at this time, so if being unsatisfactory for vehicle low pressure electricity consumption
The lower electricity of equipment control strategy requires, even if ignition switch 4 gets to OFF grades, vehicle low-voltage electrical apparatus component will not power off at once,
But after completing corresponding lower electricity strategy, then deenergization.
While getting to IG grades (such as ignition switch 4) is to be closed after the power-up for the contact 21 of low pressure lock-up relay 2, is worked as a little
When fiery switch 4 gets to OFF grades, whether contact 21, which can be kept closed, is determined by the output signal of entire car controller 3.
Normally, entire car controller 3 is connect with the battery management system of electric vehicle, electric machine controller and DC/DC modules,
The message sent for receiving battery management system, electric machine controller and DC/DC modules, and according to entire car controller 3 itself
Lower electricity strategy output control signal, such as the control signal can be break signal, or keep signal.When meeting vehicle
When low voltage equipment control strategy requires, the control signal of the output is break signal, then low pressure lock-up relay contact
21 disconnect, this further makes 12 dead electricity of coil of main relay 1, then disconnect main contacts 11, complete lower electric process.When not
When meeting vehicle low voltage equipment control strategy requirement, the control signal of above-mentioned output is then to keep signal, at this time coil 22
Electriferous state, contact 21 is kept to be kept closed, this makes the coil 12 of main relay 1 that electrification, main contacts 11 also be kept to keep
It is closed, vehicle low voltage equipment also can necessarily obtain electric energy supply by the main contacts 11 of closure from accumulator 5.
Wherein, the message institute that entire car controller 3 is sent according to battery management system, electric machine controller and DC/DC modules into
Capable lower electric control determination strategy is the control strategy of existing comparative maturity, can the control strategy be integrated in full-vehicle control
On chip inside device 3, it is waiting receive the message that battery management system, electric machine controller and DC/DC modules are sent after, in conjunction with existing
Have the judgement numerical value in lower electric control strategy, one by one in detection messages each component warning message, after making integrated treatment, by whole
The output control signal of vehicle controller 3, makes vehicle low pressure electricity consumption set to disconnect low pressure lock-up relay 2 to disconnect main relay 1
Standby lower electricity is completed, or low pressure lock-up relay 2 is kept to charge that the closure of main relay 1 is made to make vehicle low voltage equipment not
Dead electricity.
In one embodiment, further include a reverse protection diode 6 in circuit shown in Fig. 1, be connected to ignition switch 4
On ACC grades of output ends to the circuit between main relay coil 12.When ignition switch 4 gets to OFF grades, the ACC of ignition switch 4
Shelves output end is connected to the circuit power-off of main relay coil 12, but since another of 12 end of main relay coil circuit is by low pressure
Lock-up relay 2 control, so when main relay 1 main contacts 11 be still closed, vehicle low-voltage equipment does not power off still.This
When, the cut-out of main relay 1 is judged and control by entire car controller 3 according to the message received.When entire car controller 3 connects
When the message received is free of warning message, then the output stitch power-off of entire car controller 3, low pressure lock-up relay coil 22 are disconnected
It opens, to make main relay 1 disconnect, vice versa.If receiving without this reverse protection diode and at this time warning message,
So when ignition switch 4 gets to OFF grades, the contact 21 of low pressure lock-up relay 2 is to be closed, and electric current can be opened by igniting
The 4 ACC input terminals and IG input terminals for being input to entire car controller 3 are closed, entire car controller 3 is caused to be judged by accident.The reverse protection is added
After diode 6, even if ignition switch 4 gets to OFF grades, electric current will not be input to entire car controller 3 through ignition switch 4
Using the utility model embodiment, solve asking for safe power-on and power-off of each low-voltage electrical apparatus component in Full Vehicle System
Topic, avoids the accidental damage of low-voltage electrical apparatus component；Also, auxiliary control is carried out by introducing entire car controller, if be unsatisfactory for
The lower electricity of integrated vehicle control tactics requires, even if ignition switch gets to OFF grades, vehicle low-voltage electrical apparatus component will not power off at once,
But after completing corresponding lower electricity strategy, then deenergization, ensure that electric vehicle is not in accident in course of normal operation
The accident of power-off occurs.
Specific embodiment is applied in the utility model to be expounded the principles of the present invention and embodiment, with
The explanation of upper embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for this field
Those skilled in the art, according to the thought of the utility model, there will be changes in the specific implementation manner and application range, comprehensive
Upper described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of electric vehicle low pressure self saving control circuit, which is characterized in that the circuit includes：Main relay, low pressure self-insurance
Relay, entire car controller, ignition switch and accumulator；Wherein,
The main contacts of the main relay be connected to the accumulator anode and the low voltage equipment of the electric vehicle it
Between, when the main contacts is closed, the accumulator is used to power to the low voltage equipment；
Contact one end of the low pressure lock-up relay connects the coil of the main relay, the other end and the main contact parallel
It is connected to the anode of the accumulator, when the contact closure of the low pressure lock-up relay, the coil of the main relay obtains
Electricity makes the main contacts be closed；
The input terminal of the ignition switch connects the anode of the accumulator, described in the IG shelves output ends connection of the ignition switch
The input terminal of entire car controller, the output end of the entire car controller connect the coil of the low pressure lock-up relay；When described
When ignition switch gets to IG grades, the entire car controller connects the coil of the low pressure lock-up relay, makes the low pressure self-insurance
The coil of relay obtains electric, contact closure.
2. electric vehicle low pressure self saving control circuit according to claim 1, which is characterized in that the ignition switch
ACC grades of output ends are connect with the coil of the main relay, when the ignition switch gets to ACC grades, the main relay
Coil obtains electric, main contacts closure.
3. electric vehicle low pressure self saving control circuit according to claim 2, which is characterized in that the circuit further includes one
Reverse protection diode is connected to the ACC shelves output ends of the ignition switch to the circuit between the coil of the main relay
On.
4. electric vehicle low pressure self saving control circuit according to claim 1, which is characterized in that the ignition switch is got to
OFF shelves when, the circuit of the ACC shelves output ends of the ignition switch to the main relay coil powers off.
5. electric vehicle low pressure self saving control circuit according to claim 4, which is characterized in that the entire car controller with
Battery management system, electric machine controller and the connection of DC/DC modules of the electric vehicle, for receiving the battery management system
The message that system, electric machine controller and DC/DC modules are sent, and according to the first control of lower electricity strategy output of entire car controller itself
Signal, so that the low pressure lock-up relay coil losing electricity, contact disconnect, to make the main contacts of the main relay disconnect.
6. electric vehicle low pressure self saving control circuit according to claim 4, which is characterized in that the entire car controller with
Battery management system, electric machine controller and the connection of DC/DC modules of the electric vehicle, for receiving the battery management system
The message that system, electric machine controller and DC/DC modules are sent, and according to the second control of lower electricity strategy output of entire car controller itself
Signal, so that the low pressure lock-up relay coil is kept as electricity, contact remains closed, to make the master of the main relay touch
Point remains closed.
7. electric vehicle low pressure self saving control circuit according to claim 1, which is characterized in that the cathode of the accumulator
Ground connection.
8. electric vehicle low pressure self saving control circuit according to claim 1, which is characterized in that the line of the main relay
Circle wherein one end is grounded.
9. electric vehicle low pressure self saving control circuit according to claim 1, which is characterized in that the low pressure sticking relay
The coil of device wherein one end is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820266961.0U CN207902187U (en) | 2018-02-24 | 2018-02-24 | A kind of electric vehicle low pressure self saving control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820266961.0U CN207902187U (en) | 2018-02-24 | 2018-02-24 | A kind of electric vehicle low pressure self saving control circuit |
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| CN207902187U true CN207902187U (en) | 2018-09-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109747421A (en) * | 2018-11-30 | 2019-05-14 | 帝亚一维新能源汽车有限公司 | A kind of power battery accidentally descends low pressure self saving control circuit, the system and method for electricity |
| CN112298340A (en) * | 2019-07-25 | 2021-02-02 | 郑州宇通客车股份有限公司 | Power-assisted steering system and vehicle |
| CN113459819A (en) * | 2021-07-23 | 2021-10-01 | 芜湖佳景科技有限公司 | Starting circuit for electric automobile, electric automobile and starting method of electric automobile |
| CN113602095A (en) * | 2021-09-06 | 2021-11-05 | 广东高标电子科技有限公司 | Electric vehicle controller system and control method thereof |
-
2018
- 2018-02-24 CN CN201820266961.0U patent/CN207902187U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109747421A (en) * | 2018-11-30 | 2019-05-14 | 帝亚一维新能源汽车有限公司 | A kind of power battery accidentally descends low pressure self saving control circuit, the system and method for electricity |
| CN112298340A (en) * | 2019-07-25 | 2021-02-02 | 郑州宇通客车股份有限公司 | Power-assisted steering system and vehicle |
| CN112298340B (en) * | 2019-07-25 | 2021-11-26 | 郑州宇通客车股份有限公司 | Power-assisted steering system and vehicle |
| CN113459819A (en) * | 2021-07-23 | 2021-10-01 | 芜湖佳景科技有限公司 | Starting circuit for electric automobile, electric automobile and starting method of electric automobile |
| CN113602095A (en) * | 2021-09-06 | 2021-11-05 | 广东高标电子科技有限公司 | Electric vehicle controller system and control method thereof |
| CN113602095B (en) * | 2021-09-06 | 2024-02-06 | 广东高标智能科技股份有限公司 | Electric vehicle controller system and control method thereof |
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