Relay for electric automobile checks circuit structure
Technical field
The present invention relates to relay Examined effect field, particularly relate to the relay Examined effect field of electric automobile, tool
Body refers to that a kind of relay for electric automobile checks circuit structure.
Background technology
Along with the fast development of society, automobile has had become as indispensable ingredient in people's life, and big portion
As long as a point automobile starts hood and just can seek the trace of relay, car bulb, wiper, starter, air-conditioning are mechanical, electrical
Dynamic seat, power window, antilock device, suspension control, sound equipment etc. will be with control relays.Relay is a kind of automatically controlled
Device processed, is when the change of input quantity reaches regulation requirement, makes controlled volume that predetermined step occurs in electric output circuit
A kind of electrical equipment of change.It has the interactive relationship between input circuit and output loop.It is commonly used to the control of automatization
In circuit, it actually goes to control the one " switch automatically " of big electric current running with small area analysis.Therefore play in circuit automatically
Regulation, safeguard protection, change-over circuit etc. act on.
Automobile controls relay technology and requires harshness, and in order to ensure the normal use of automobile middle part part, these relays
Need the function with normal use, need when automobile overhauls relay is checked, common relay inspection
Look into body long-pending relatively big, and need when checking to connect a lot of wire harness, use cumbersome, relay the most of the prior art
Device detector needs external power supply, use to be inconvenient for.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that one is capable of directly utilizing electronic
The accumulator of automobile is powered, accurately measures the relay duty of electric automobile, circuit structure is simple, it is more extensive to have
The relay for electric automobile of range of application checks circuit structure.
To achieve these goals, the present invention has following composition: this relay being used for electric automobile checks circuit knot
Structure, it is mainly characterized by, and described circuit structure includes reduction voltage circuit, checks switch and light-emitting component, described reduction voltage circuit
Input be connected with the discharge end of the accumulator of electric automobile, the first outfan of described reduction voltage circuit is by described
Check that switch is connected with the first end of described relay with light-emitting component, the second outfan of described reduction voltage circuit and institute
Second end of the relay stated is connected.
It is preferred that described reduction voltage circuit is transformator.
It is preferred that described light-emitting component is light emitting diode or bulb.
It is preferred that described light-emitting component includes that two light emitting diodes, two described light emitting diodes are connected in parallel.
It is preferred that described circuit structure also includes that current sensor, described current sensor are arranged at described fall
Between second outfan and second end of described relay of volt circuit.
More preferably, described circuit structure also includes display unit and amplifier, and described current sensor is by described
Amplifier be connected to described display unit.
Further, described display unit is LCD display.
Have employed the relay for electric automobile in this invention and check circuit structure, have the advantages that (1)
To relay, the accumulator directly utilizing electric automobile checks that circuit is powered, voltage drop as little as needed by a reduction voltage circuit
Within the scope of Yaoing, and without external power supply, circuit structure is very simple, and application is convenient;(2) refer to by arranging light-emitting component
Showing the duty of relay, light-emitting component can be that bulb or light emitting diode, the quantity of light-emitting component and type can roots
Select according to concrete needs, the best by the most luminous duty that can become apparent from relay of light-emitting component
Good;(3) increase arranges current sensor further, is measured the current value checked in circuit structure, and single by display
Unit shows, it is possible to achieve test relay the most accurately;(4) without connecting unnecessary wire harness during relay test, only
Checked relay need to be connected to relay and check that in circuit, same inspection circuit structure can be applied to many repeatedly
The detection of secondary multiple relay, measurement result is accurate, it is simple to the current check of electric automobile and repairing, open type and closed type
Relay all can detect, and has wider application scope.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the relay inspection circuit structure for electric automobile of the present invention.
Detailed description of the invention
In order to more clearly describe the technology contents of the present invention, carry out further below in conjunction with specific embodiment
Describe.
To achieve these goals, the relay for electric automobile of the present invention checks that circuit structure includes blood pressure lowering electricity
Road, inspection switch and light-emitting component, the input of described reduction voltage circuit is connected with the discharge end of the accumulator of electric automobile,
First outfan of described reduction voltage circuit is by described the first end checking switch and light-emitting component and described relay
Being connected, the second outfan of described reduction voltage circuit is connected with the second end of described relay.
In one preferably embodiment, described reduction voltage circuit is transformator, in order to by the accumulator of electric automobile
Output voltage be reduced to required voltage scope, therefore the number of turn of transformator blood pressure lowering ratio as required carries out selection and sets
Put.
In one preferably embodiment, described light-emitting component is light emitting diode or bulb.
In one preferably embodiment, described light-emitting component includes two light emitting diodes, and described two send out
Optical diode is connected in parallel.
In actual applications, light-emitting component can according to user need select concrete quantity and type.
In one preferably embodiment, described circuit structure also includes current sensor, described current sense
Device is arranged between the second outfan of described reduction voltage circuit and the second end of described relay.
In one more preferably embodiment, described circuit structure also includes display unit and amplifier, described electricity
Flow sensor is connected to described display unit by described amplifier.
In a kind of further embodiment, described display unit is LCD display.In actual applications, aobvious
Show that unit can also select other kinds of display screen.
Checking process is as follows: is connected with the accumulator of electric automobile by the input of reduction voltage circuit, passes through reduction voltage circuit
The output voltage of accumulator is reduced to required voltage scope, by the outfan of reduction voltage circuit, check switch, light-emitting component and
Relay to be detected is sequentially connected with, and forms a loop.Press inspection switch, press relay simultaneously, if relay
Work is good, then light-emitting component is by normal luminous, otherwise light-emitting component will the most luminous, and therefore passing through light-emitting component whether luminescence can
The best to become apparent from the duty of relay.
Further, if increasing current sensor in checking circuit structure, then can check in whole current loop
Magnitude of voltage, be shown in display element after detected value being amplified by amplifier, thus the duty of relay carried out
Detect the most accurately.
The relay for electric automobile of the present invention checks in the technical scheme of circuit structure, wherein included each
Function device and modular device all can corresponding to actual particular hardware circuit structure, therefore these modules and unit merely with
Hardware circuit i.e. can be automatically obtained corresponding function it is achieved that need not auxiliary with the specific software that controls.
Have employed the relay for electric automobile in this invention and check circuit structure, have the advantages that (1)
To relay, the accumulator directly utilizing electric automobile checks that circuit is powered, voltage drop as little as needed by a reduction voltage circuit
Within the scope of Yaoing, and without external power supply, circuit structure is very simple, and application is convenient;(2) refer to by arranging light-emitting component
Showing the duty of relay, light-emitting component can be that bulb or light emitting diode, the quantity of light-emitting component and type can roots
Select according to concrete needs, the best by the most luminous duty that can become apparent from relay of light-emitting component
Good;(3) increase arranges current sensor further, is measured the current value checked in circuit structure, and single by display
Unit shows, it is possible to achieve test relay the most accurately;(4) without connecting unnecessary wire harness during relay test, only
Checked relay need to be connected to relay and check that in circuit, same inspection circuit structure can be applied to many repeatedly
The detection of secondary multiple relay, measurement result is accurate, it is simple to the current check of electric automobile and repairing, open type and closed type
Relay all can detect, and has wider application scope.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that still may be made that
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification and drawings is considered as illustrative
And it is nonrestrictive.