CN209311593U - A kind of burn in test circuit and device of charging gun - Google Patents
A kind of burn in test circuit and device of charging gun Download PDFInfo
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- CN209311593U CN209311593U CN201821849059.8U CN201821849059U CN209311593U CN 209311593 U CN209311593 U CN 209311593U CN 201821849059 U CN201821849059 U CN 201821849059U CN 209311593 U CN209311593 U CN 209311593U
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- charging gun
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- burn
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- transformer
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 230000032683 aging Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of burn in test circuit of charging gun and devices, the circuit includes the first transformer and the second transformer, first transformer includes first primary and first grade, second transformer includes the second primary and second subprime, first grade includes the first terminals and the second terminals for being respectively used to the firewire both ends of connection charging gun, the second subprime includes the third terminals and the 4th terminals for being respectively used to the zero curve both ends of connection charging gun, described first primary the number of turns is greater than the number of turns of first grade, described second primary the number of turns is greater than the number of turns of second subprime.The utility model realizes burn-in test in the case where not accessing real load by voltage and current of the simulation loading on charging gun conducting wire, and the power consumption of burn-in test is greatly reduced in the case where test electric current is constant, saves a large amount of electric energy.The utility model can be widely applied to degradation testing technique.
Description
Technical field
The utility model relates to degradation testing technique, the burn in test circuit and device of especially a kind of charging gun.
Background technique
With the rise of new-energy automobile, charging equipment has great demand, and AC charging rifle is the one of charging equipment
Part.
In the production process of AC charging rifle, in order to ensure reliable in quality, need to carry out burn-in test, so-called burn-in test
It is exactly limit test, usually to be exposed the problem of for a long time and at full capacity for test condition, making product.
AC charging rifle is exactly the product that can be made up of the electric wire of high current and the plug at both ends by two,
Generally there is one to be in series with relay in two electric wires, for cut off/connect control, relay is closure when work
, so charging gun can be regarded as two electric wires for having certain internal resistance.
One traditional charging gun burn in test circuit is as shown in Figure 1.Wherein L point, N point be respectively connected to alternating current firewire and
Zero curve, S1-S2, S3-S4, S5-S6, S7-S8 respectively indicate jack-plug, and A, B are respectively the cable conductor of charging gun, and C is
Cable sheath or shell, D are the relay built in charging gun, and L ' point, N ' point are separately connected the firewire and zero curve of load, and P is true
Actual loading.Assume that all plugs have all been in close contact with corresponding socket.When maximum electricity will be flowed through in P full load, route
Stream.If P is fully loaded for a long time, the cable, relay and plug in charging gun are just by aging, if ageing time is enough
It is long, and midway is not broken down, then the product can be judged as qualification, can dispatch from the factory, and here it is general burn-in tests
Process.
Existing test circuit problem is, since P needs to consume a large amount of power, to meet simultaneously for a long time and at full capacity
Two kinds of conditions are very expensive.If yield is very big, multiple products simultaneously aging when, will lead to power grid can not load.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that: the aging for providing a kind of energy-efficient charging gun is surveyed
Try circuit and device.
The first technical solution that the utility model is taken is:
A kind of burn in test circuit of charging gun, including the first transformer and the second transformer, the first transformer packet
First primary and first grade is included, second transformer includes the second primary and second subprime, and first grade includes point
First terminals and the second terminals at the firewire both ends of charging gun Yong Yu not be connected, the second subprime includes the company of being respectively used to
The third terminals and the 4th terminals at the zero curve both ends of charging gun are connect, described first primary the number of turns is greater than the circle of first grade
Number, described second primary the number of turns are greater than the number of turns of second subprime.
Further, first primary series have the first adjustable resistance；Second primary series have the second adjustable resistance.
Further, first adjustable resistance and the second adjustable resistance are integrated in a duplex potentiometer.
It further, further include third adjustable resistance, described first is primary, the second primary is connected with third adjustable resistance.
Further, first transformer and the second transformer are adjustable variable-pressure device.
It further, further include the first connector and the second connector, first terminals and third terminals are with
A connector connection, second terminals and the 4th terminals connects with the second connector, first connector for
The socket that the input terminal plug of charging gun is used cooperatively, second connector are to be used cooperatively with the output end plug of charging gun
Socket.
Second of technical solution that the utility model is taken is:
A kind of ageing tester of charging gun, the burn in test circuit including shell and charging gun.
Further, further include processor, display screen, current sampling module and voltage sample module, the processor it is defeated
Enter end to connect with the output end of the output end of voltage sample module and current sampling module, the output end of the processor and display
The input terminal of screen connects.
The third technical solution that the utility model is taken is:
The beneficial effects of the utility model are: the utility model passes through voltage and electricity of the simulation loading on charging gun conducting wire
Stream, realizes burn-in test in the case where not accessing real load, drops significantly in the case where test electric current is constant
The low power consumption of burn-in test, saves a large amount of electric energy；Meanwhile under same power conditions, degradation can be increased
Quantity helps to promote measurement scope.
Detailed description of the invention
Fig. 1 is the schematic diagram of the test circuit of the prior art；
Fig. 2 is the schematic diagram that the equivalent circuit of circuit is tested in Fig. 1；
Fig. 3 is a kind of application principle figure of the burn in test circuit of charging gun of the utility model；
Fig. 4 is the application principle figure of the burn in test circuit of the first preferred embodiment of the utility model；
Fig. 5 is the application principle figure of the burn in test circuit of second of preferred embodiment of the utility model.
Specific embodiment
The utility model is further detailed with specific embodiment with reference to the accompanying drawings of the specification.
The utility model thinks that the burn-in test of charging gun does not need true in the output end access of charging gun in fact
Load, and only need to guarantee test when flow through charging gun electric current it is identical as electric current of the charging gun when connecting real load when
?.
Fig. 2 shows the schematic diagrams of the equivalent circuit of the test circuit in Fig. 1, wherein what the first equivalent resistance Ra was represented
The sum of the resistance of firewire route, it comprises between conductor resistance, plug and socket contact resistance and relay connect
The sum of electric shock resistance.What the second equivalent resistance Rb was represented is the sum of the resistance of zero curve route comprising conductor resistance and plug and
Contact resistance between socket.Substantially, the essence of burn-in test, exactly one allows the first equivalent resistance Ra and the second equivalent electricity
Hinder the process of Rb fever.
Referring to Fig. 3, a kind of burn in test circuit of charging gun is present embodiments provided, the aging for AC charging rifle is surveyed
Examination, which includes the first transformer T1 and the second transformer T2, the first transformer T1 included the first primary and first time
Grade, the second transformer T2 include the second primary and second subprime.
First grade includes the first terminals and the second terminals for being respectively used to the firewire both ends of connection charging gun,
First terminals are the terminals for being connected to L point, and second terminals are the terminals for being connected to L ' point；Described second
Secondary includes the third terminals and the 4th terminals for being respectively used to the zero curve both ends of connection charging gun, and the third terminals are
The terminals of N point are connected to, the 4th terminals are the terminals for being connected to N ' point.
Since the resistance value of the first equivalent resistance Ra and the second equivalent resistance Rb are much smaller than the resistance value of real load, apply
The voltage being added on the first equivalent resistance Ra and the second equivalent resistance Rb should be much smaller than input voltage.In the present embodiment, first
Transformer T1 and the second transformer T2 plays the role of decompression, and described first primary the number of turns is greater than the number of turns of first grade,
Described second primary the number of turns is greater than the number of turns of second subprime.
When carrying out burn-in test using this circuit, the primary of the primary of the first transformer T1 and the second transformer T2 is connect
Enter alternating current, that is, is connected between L " point and N " point.For the electricity production rifle product set for one, its first equivalent resistance Ra
It is fixed with the second equivalent resistance Rb, as long as being specified generating one on the first equivalent resistance Ra and the second equivalent resistance Rb
Electric current the burn-in test to charging gun can be realized.According to Ohm's law, in the case where resistance is fixed, voltage and current it
Between be it is directly proportional, therefore, can be by the first transformer T1 and the second transformer T2, respectively in the first equivalent resistance Ra and
The corresponding voltage of the specified current flow is generated on two equivalent resistance Rb.And it loads equivalent in the first equivalent resistance Ra and second
Voltage on resistance Rb is determined by the turn ratio of transformer.For different charging guns, those skilled in the art can be the
Suitable turn ratio is arranged in one transformer T1 and the second transformer T2.Certainly, in order to test when ensure charging gun firewire and
Pressure difference between zero curve is identical as the pressure difference of access when charging gun normal use, by L point and N point when the present embodiment can be tested
Also it is respectively connected to the firewire and zero curve of alternating current, i.e., in test, L point and L " point while the firewire for accessing alternating current, N point and N " are put together
When access alternating current zero curve.
Referring to Fig. 4, as preferred embodiment, first primary series have the first adjustable resistance Rc1；At the beginning of described second
Grade is in series with the second adjustable resistance Rc2.
In the present embodiment, in order to adjust flow through charging gun electric current it is adjustable, the present embodiment is respectively first
Primary and the second primary series adjustable resistance, so that test electric current is adjustable, to simulate different test conditions.Wherein,
Adjustable resistance include mechanical potentiometer, digital regulation resistance and other can be realized the entity component group of adjustable resistance function
It closes.
It is more true in order to allow the electric current for flowing through charging gun firewire and zero curve one to show simulation as preferred embodiment
Test condition, the first adjustable resistance Rc1 and the second adjustable resistance Rc2 are integrated in a duplex potentiometer.The duplex
Potentiometer, which refers to, is integrated with two identical potentiometers in the potentiometer, and when adjusting the duplex potentiometer, two identical
Potentiometer can make identical movement, it can realize the synchronous adjustment of resistance.
Referring to Fig. 5, as preferred embodiment, the present embodiment has supplied another embodiment different from Fig. 4's, this implementation
Example includes third adjustable resistance, and described first is primary, the second primary is connected with third adjustable resistance Rc.
As shown in figure 5, the present embodiment can by the primary and third of the primary of the first transformer T1 and the second transformer T2
Resistance Rc is adjusted to be connected, therefore it is identical for flowing through the primary of the first transformer T1 and the primary electric current of the second transformer T2
, it is meant that the electric current of the two secondary is also identical.This self-equilibrium characteristic ensure that the firewire and zero curve for flowing through charging gun
Electric current it is identical so that test condition is closer to reality.
As preferred embodiment, in order to allow this circuit to can be adapted for the charging gun of different model, first transformation
Device and the second transformer are adjustable variable-pressure device.Secondary the number of turns of the adjustable variable-pressure device is optional, for different
When the charging gun of model, output voltage can be adjusted by adjusting the number of turns of transformer secondary output, to simulate different output electricity
Pressure.
It further include the first connector and the second connector as preferred embodiment, first terminals and third connect
Line end is connect with the first connector, and second terminals and the 4th terminals are connect with the second connector, and described first
Connector is the socket being used cooperatively with the input terminal plug of charging gun, and second connector is to insert with the output end of charging gun
The socket that head is used cooperatively.The present embodiment is provided with the first connector and the second connector, so that technical staff is carrying out aging
When test, directly the input terminal of charging gun and output end can be inserted into respectively in the first connector and the second connector, saved
Time of wiring.Under normal circumstances, the input terminal of charging gun is the three-pin plug of standard, and the output end of charging gun is then mark
Quasi- electric vehicle charging plug.Therefore the first connector can select common three-pin socket, and the second connector can use
The charging socket for electric vehicle of standard.
Present embodiment discloses a kind of ageing tester of charging gun, which includes shell and aforementioned any implementation
The burn in test circuit of charging gun in example.The device of the present embodiment can be tester or test macro.The charging gun
Burn in test circuit installation inside the shell.
As preferred embodiment, the present embodiment further includes processor, display screen, current sampling module and voltage sample mould
The input terminal of block, the processor is connect with the output end of the output end of voltage sample module and current sampling module, the place
The input terminal of the output end and display screen of managing device connects.The present embodiment is additionally arranged processor, display screen, voltage sample module and electricity
Press sampling module, can on the charging gun of load electric current and voltage sample, then processor control display screen show
The data of these samplings.In order to which technical staff grasps current test condition.The processor and display screen, current sample mould
It can be connected by communication interfaces such as I2C or serial ports between block and voltage sample module.
It is to be illustrated to the preferable implementation of the utility model, but the utility model is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent changes without departing from the spirit of the present invention
Shape or replacement, in particular, being directed to there are many kinds of the existing ways for adjusting transformer output current, as long as not changing transformer output end
Frequency, the scheme that the output electric current of transformer is adjusted using other modes also belongs to model defined by the claim of this application
In enclosing.
Claims (8)
1. a kind of burn in test circuit of charging gun, it is characterised in that: including the first transformer and the second transformer, described first
Transformer includes first primary and first grade, and second transformer includes the second primary and second subprime, the first time
Grade includes the first terminals and the second terminals for being respectively used to the firewire both ends of connection charging gun, and the second subprime includes point
The third terminals and the 4th terminals at the zero curve both ends of charging gun Yong Yu not be connected, described first primary the number of turns is greater than first
Secondary the number of turns, described second primary the number of turns are greater than the number of turns of second subprime.
2. a kind of burn in test circuit of charging gun according to claim 1, it is characterised in that: first primary series
There is the first adjustable resistance；Second primary series have the second adjustable resistance.
3. a kind of burn in test circuit of charging gun according to claim 2, it is characterised in that: first adjustable resistance
It is integrated in a duplex potentiometer with the second adjustable resistance.
4. a kind of burn in test circuit of charging gun according to claim 1, it is characterised in that: further include third adjustable electric
Resistance, described first is primary, the second primary is connected with third adjustable resistance.
5. a kind of burn in test circuit of charging gun according to claim 1-4, it is characterised in that: described first
Transformer and the second transformer are adjustable variable-pressure device.
6. a kind of burn in test circuit of charging gun according to claim 1-4, it is characterised in that: further include
A connector and the second connector, first terminals and third terminals are connect with the first connector, and described second connects
Line end and the 4th terminals are connect with the second connector, and first connector is to make with the cooperation of the input terminal plug of charging gun
Socket, second connector are the socket being used cooperatively with the output end plug of charging gun.
7. a kind of ageing tester of charging gun, it is characterised in that: including shell and as claimed in any one of claims 1 to 6
The burn in test circuit of charging gun.
8. a kind of ageing tester of charging gun according to claim 7, it is characterised in that: further include processor, aobvious
Display screen, current sampling module and voltage sample module, the input terminal of the processor and the output end and electricity of voltage sample module
The output end connection of sampling module is flowed, the output end of the processor and the input terminal of display screen connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849059.8U CN209311593U (en) | 2018-11-09 | 2018-11-09 | A kind of burn in test circuit and device of charging gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849059.8U CN209311593U (en) | 2018-11-09 | 2018-11-09 | A kind of burn in test circuit and device of charging gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311593U true CN209311593U (en) | 2019-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821849059.8U Expired - Fee Related CN209311593U (en) | 2018-11-09 | 2018-11-09 | A kind of burn in test circuit and device of charging gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209311593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444584A (en) * | 2018-11-09 | 2019-03-08 | 广州市微龙电子科技有限公司 | A kind of burn in test circuit of charging gun, device and method |
-
2018
- 2018-11-09 CN CN201821849059.8U patent/CN209311593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444584A (en) * | 2018-11-09 | 2019-03-08 | 广州市微龙电子科技有限公司 | A kind of burn in test circuit of charging gun, device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 |