CN209296837U - Capacitance testing device and equipment - Google Patents
Capacitance testing device and equipment Download PDFInfo
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- CN209296837U CN209296837U CN201822057946.8U CN201822057946U CN209296837U CN 209296837 U CN209296837 U CN 209296837U CN 201822057946 U CN201822057946 U CN 201822057946U CN 209296837 U CN209296837 U CN 209296837U
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Abstract
The utility model relates to a kind of capacitance testing device and equipment, capacitance testing devices, including the charging circuit connecting with testing capacitance, the discharge circuit connecting with testing capacitance and control module；Control module controls testing capacitance according to the charge-discharge parameter of testing capacitance and automatically switches between charging circuit and discharge circuit, to carry out charge or discharge experiment to testing capacitance.Capacitance testing device provided by the embodiment of the utility model and equipment can satisfy testing capacitance and carries out charge and discharge test, and test efficiency and highly-safe.
Description
Technical field
The utility model relates to capacitor detection technique fields, more particularly to a kind of capacitance testing device and equipment.
Background technique
Capacitor due to having many excellent characteristics, such as: self-healing property, nonpolarity, insulation impedance is very high, frequency characteristic
Excellent (frequency response broad) and dielectric loss very little etc., therefore the green energy resources field such as be widely used in wind-powered electricity generation, photovoltaic.
The Support Capacitor of current transformer is electrolytic capacitor and two kinds of thin-film capacitor at present, and following trend is that thin-film capacitor is
It is main.In the application of actual product, it is found that the reliability of Support Capacitor becomes one of the key factor of current transformer reliability, and go out
The problem of repeatedly causing current transformer to catch fire due to Support Capacitor failure is showed.In order to be better understood by and grasp the spy of Support Capacitor
Property, in new product development, the reliability needs of the capacitor of different manufacturers, different model specification, different purposes are carried out pair
Than developing good product.Charge and discharge test is link indispensable in capacitor reliability test, however, the prior art
In the charge-discharge system of capacitor mostly use manually control greatly, in labor intensive working hour, efficiency and safety are low.
Therefore, a kind of new capacitance testing device and equipment are needed.
Utility model content
The utility model embodiment provides a kind of capacitance testing device and equipment, can automatically control the charge and discharge of capacitor,
It can satisfy testing capacitance and carry out charge and discharge test, and test efficiency and highly-safe.
On the one hand, a kind of capacitance testing device is proposed according to the utility model embodiment, including is connect with testing capacitance
Charging circuit, the discharge circuit that is connect with testing capacitance and control module；Control module is according to the charge and discharge of testing capacitance
State modulator testing capacitance automatically switches between charging circuit and discharge circuit, real to carry out charge or discharge to testing capacitance
It tests.
According to the one aspect of the utility model embodiment, charging circuit includes the first power module, first switch module
And current limiting element, one end of testing capacitance are connected by one end of first switch module and current limiting element and the first power module
It connects, the testing capacitance other end is connect with the other end of the first power module.
According to the one aspect of the utility model embodiment, discharge circuit includes second switch module and load, and second opens
Module and load in series are closed between the both ends of testing capacitance.
According to the one aspect of the utility model embodiment, first switch module includes first coil and the first auxiliary touching
Point, second switch module further include the second coil and the second auxiliary contact, and control module includes third switch module, the 4th switch
Module and second power supply module, third switch module, the second auxiliary contact and first coil are series at the two of second power supply module
Between end, the 4th switch module, the first auxiliary contact, the second coil are series between the both ends of second power supply module.
According to the one aspect of the utility model embodiment, control module further comprises warning lamp, and warning lamp is connected to
Between the both ends of second power supply module；And/or control module further comprises operating status lamp and the 5th switch module, fortune
Row status lamp and the 5th switch module are series between the both ends of second power supply module.
According to the one aspect of the utility model embodiment, charge-discharge parameter includes the charging duration and electric discharge of testing capacitance
Duration；Control module further includes controller, and controller is connect with third switch module and the 4th switch module；Controller is configured
Charging duration for testing capacitance in record test process and duration of discharging, and reach predetermined in the charging duration of testing capacitance and fill
When electric duration, control third switch module is disconnected, when the electric discharge duration of testing capacitance reaches predetermined discharge duration, control the 4th
Switch module disconnects.
According to the one aspect of the utility model embodiment, first switch module further includes the first main contacts, testing capacitance
One end connect by the first main contacts of first switch module and current limiting element with one end of the first power module, first leads
Contact includes one or concatenated multiple switch device；And/or second switch module further includes the second main contacts, second opens
Module is closed through the second main contacts and load in series between the both ends of testing capacitance, the second main contacts includes one or series connection
Multiple switch device.
According to the one aspect of the utility model embodiment, the quantity of charging circuit and discharge circuit be two and with
On, to carry out charge and discharge to two or more testing capacitance；Control module is configured as selective control to two or more
One or two of testing capacitance and the above testing capacitance are charged and/or are discharged.
It further comprise oscillograph according to the one aspect of the utility model embodiment, oscillograph is connected to testing capacitance
Both ends, to show the electric current and/or voltage of testing capacitance.
On the other hand, a kind of capacity measurement equipment is proposed according to the utility model embodiment, including shell and on
The capacitance testing device stated, capacitance testing device are set to shell.
According to capacitance testing device provided by the embodiment of the utility model and equipment, capacitance testing device includes and electricity to be measured
Charging circuit, the discharge circuit connecting with testing capacitance and the control module for holding connection are carrying out charge and discharge to testing capacitance
When experiment, it can be realized by charging circuit and discharge circuit, also, control module is according to the charge-discharge parameter control of testing capacitance
Testing capacitance processed automatically switches between charging circuit and discharge circuit, real to carry out charge or discharge experiment to testing capacitance
The automatic control of existing testing capacitance charge and discharge test convenient for the charge and discharge test to capacitor, can be improved without human intervention
The efficiency and safety of test.
Detailed description of the invention
The feature, advantage and technical effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the capacitance testing device of the utility model one embodiment；
Fig. 2 is the schematic diagram of charging circuit and discharge circuit in Fig. 1；
Fig. 3 is the charging circuit of the utility model one embodiment and the circuit diagram of discharge circuit；
Fig. 4 is the control module figure of the capacitance testing device of the utility model one embodiment；
Fig. 5 is the signal pins control figure of the controller of the utility model embodiment；
Fig. 6 is the structural schematic diagram of the capacitance testing device of another embodiment of the utility model；
Fig. 7 is the structural schematic diagram of the capacity measurement equipment of the utility model embodiment.
Wherein:
100- testing capacitance；
10- charging circuit；The first power module of 11-；12- first switch module；The first main contacts of 121-；122- First Line
Circle；The first auxiliary contact of 123-；13- current-limiting resistance；The first breaker of 14-；
20- discharge circuit；21- second switch module；The second main contacts of 211-；The second coil of 212-；213- second is assisted
Contact；22- load；
30- control module；31- second power supply module；321- third switch module；322- tertiary coil；331- the 4th is opened
Close module；The 4th coil of 332-；34- warning lamp；35- operating status lamp；The 5th switch module of 361-；The 5th coil of 362-；37-
Second breaker；
40- controller；41- third power module；
50- oscillograph.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The feature and exemplary embodiment of the various aspects of the utility model is described more fully below.It is retouched in detail in following
In stating, many details are proposed, in order to provide the comprehensive understanding to the utility model.But for those skilled in the art
It will be apparent that the utility model can be implemented in the case where not needing some details in these details for member.
Below the description of embodiment is used for the purpose of providing by showing the example of the utility model to the more preferable of the utility model
Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not shown, to avoid to this reality
Unnecessary obscure is caused with novel；Also, for clarity, may be exaggerated the size of part-structure.In addition, hereinafter being retouched
Feature, the structure or characteristic stated can be incorporated in any suitable manner in one or more embodiments.
The noun of locality of middle appearance described below is direction shown in figure, is not the capacity measurement to the utility model
Device and the specific structure of equipment are defined.In the description of the present invention, it should also be noted that, unless otherwise clear
Regulation and restriction, term " installation ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, be also possible to detachable
Connection, or be integrally connected；It can be directly connected, can also be indirectly connected.For the ordinary skill in the art,
Visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand is surveyed below with reference to Fig. 1 to Fig. 7 according to the capacitor of the utility model embodiment
Trial assembly is set and equipment is described in detail.
Fig. 1 and Fig. 2 is please referred to, Fig. 1 shows the structural schematic diagram of the capacitance testing device of one embodiment, Fig. 2 shows
The schematic diagram of charging circuit 10 and discharge circuit 20 in Fig. 1.The utility model embodiment provides a kind of capacitance testing device,
Including the charging circuit 10 being connect with testing capacitance 100, the discharge circuit 20 being connect with testing capacitance 100 and control module
30, control module 30 controls testing capacitance 100 in charging circuit 10 and discharge circuit according to the charge-discharge parameter of testing capacitance 100
Automatically switch between 20, to carry out charge or discharge experiment to testing capacitance 100.Mentioned by each embodiment of above and below to
Surveying capacitor 100 can be thin-film capacitor, it is of course also possible to be other kinds of capacitor.
Capacitance testing device provided by the embodiment of the utility model can automatically control the charge and discharge of testing capacitance, can
Meet the charge and discharge test of testing capacitance 100, and test efficiency and highly-safe.
Fig. 3 shows the charging circuit 10 of the utility model one embodiment and the circuit diagram of discharge circuit 20.It please one
And refering to Fig. 2, Fig. 3, in some optional examples, charging circuit 10 includes the first power module 11 and first switch module
12, first switch module 12 includes the first main contacts 121, and one end of testing capacitance 100 passes through the first main contacts 121 and the first electricity
One end of source module 11 connects, and 100 other end of testing capacitance is connect with the other end of the first power module 11.
When it is implemented, the first power module 11 can be adjustable constant-flow constant voltage source, first switch module 12 can be adopted
With different switching devices, in some optional examples, first switch module 12 can be contactor, first switch module 12
The first main contacts 121 be normally opened contact, the positive of one end of the first main contacts 121 and the first power module 11 connect, first
The other end of main contacts 121 is connect with one end of testing capacitance 100, the other end and first switch module 12 of testing capacitance 100
Cathode connection, the on-off of charging circuit 10 is controlled by the first main contacts 121 of first switch module 12.
First main contacts 121 may include a switching device, certainly, in some other examples, the first main contacts
121 also may include concatenated multiple switch device, such as may include two, three even more switches being serially connected
Device includes concatenated multiple switch device by the first main contacts 121 of limitation, so that charging circuit 10 is only when first is main
All switching devices of contact 121 are switched on when being all closed, and can guarantee the safety when charging experiment of testing capacitance 100.
In order to limit the electric current in charging circuit 10 no more than predetermined current value, optionally, charging circuit 10 is further wrapped
Include current limiting element 13, current limiting element 13 can use current-limiting resistance, the both ends of current limiting element 13 can respectively with the first power supply mould
The anode of block 11 and the connection of the first main contacts 121.
As an alternative embodiment, discharge circuit 20 includes second switch module 21 and load 22, second switch
Module 21 includes the second main contacts 211, and the second main contacts 211 and load 22 are connected between the both ends of testing capacitance 100.
When it is implemented, second switch module 21 can use different switching devices, optionally, second switch module 21
It equally can be contactor, the second main contacts 211 of second switch module 21 is normally opened contact, one end of the second main contacts 211
It is connect with one end of testing capacitance 100, the other end 22 connect with load, and the other end of load 22 and testing capacitance 100 is another
One end connection, load 22 are specifically as follows discharge resistance, pass through the second main contacts 211 control electric discharge electricity of second switch module 21
The on-off on road 20.
Likewise, the second main contacts 211 may include a switching device, and certainly, in some other examples, second
Main contacts 211 also may include concatenated multiple switch device, for example, may include two, three even more be serially connected
Switching device, by limitation the second main contacts 211 include concatenated multiple switch device so that discharge circuit 20 is only being worked as
All switching devices of second main contacts 211 are switched on when being all closed, and can guarantee to improve to 100 discharge test of testing capacitance
When safety.
In order to preferably monitor the voltage in charging circuit 10 and discharge circuit 20 of testing capacitance 100, preferably to assess
100 single of testing capacitance whether charging complete or electric discharge complete, optionally, capacitance testing device still further comprises oscillograph
50, oscillograph 50 is connected to the both ends of testing capacitance 100, by oscillograph 50, can intuitively show that testing capacitance 100 is filling
Real-time voltage when electricity and/or electric discharge, certainly, in some optional examples, oscillograph 50 can also intuitively show to be measured
Real-time current of the capacitor 100 in charging and/or electric discharge.
In order to guarantee the safety of charging circuit 10 and discharge circuit 20, optionally, charging circuit 10 still further comprises
One breaker 14, the first breaker 14 are connected between the first power module 11 and the first main contacts 121.
Fig. 4 shows the control module figure of the capacitance testing device of the utility model one embodiment.Also referring to figure
3, Fig. 4, as an alternative embodiment, first switch module 12 further includes first coil 122 and the first auxiliary contact
123, second switch module 21 further includes the second coil 212 and the second auxiliary contact 213, and control module 30 includes third switching molding
Block 321, the 4th switch module 331 and second power supply module 31, third switch module 321, the second auxiliary contact 213 and First Line
Circle 122 is series between the both ends of second power supply module 31, the 4th switch module 331, the first auxiliary contact 123, the second coil
212 are series between the both ends of second power supply module 31.
When it is implemented, first switch module 12 the first auxiliary contact 123 and second switch module 21 it is second auxiliary
Help contact 213 all can be normally-closed contact, third switch module 321 and the 4th switch module 331 can use relay, third
Switch module 321 includes third main contacts and tertiary coil 322, and third switch module 321 passes through its third main contacts and the
Two auxiliary contact 213 and first coil 122 are connected, and the 4th switch module 331 includes the 4th main contacts and the 4th coil 332,
4th switch module 331 is connected by its 4th main contacts with the first auxiliary contact 123 and the second coil 212.
It is closed the third main contacts of third switch module 321, the first coil 122 of first switch module 12 is powered, and the
First auxiliary contact 123 of one switch module 12 disconnect, i.e., the second coil 212 of second switch module 21 must not be electric, at this point, control
Charging circuit 10 processed is connected, and charges to testing capacitance 100.And after the third main contacts of third switch module 321 disconnects, first
122 power loss of coil, the first auxiliary contact 123 of first switch module 12 reclose the 4th switch module 331 after re-closing
Second coil 212 of the 4th main contacts, second switch module 21 is powered, and the second auxiliary contact 213 of second switch module 21 are disconnected
It opens, control discharge circuit 20 is connected, and discharges to testing capacitance 100.
By above-mentioned setting, it is automatic between charging circuit 10 and discharge circuit 20 that testing capacitance 100 can not only be controlled
Switching, meanwhile, the connection type of the first auxiliary contact 123 and the second auxiliary contact 213 and other devices can be realized first and open
The interlocking between module 12 and second switch module 21 is closed, realizes reliability and safety to 100 charging and discharging of testing capacitance
Property.
When it is implemented, control module 30 further comprises the second breaker 37, the second breaker 37 and second source mould
Block 31 connects, and further increases the safety of capacitance testing device.
As an alternative embodiment, control module 30 still further comprises warning lamp 34, warning lamp 34 is connected to
Between the both ends of second power supply module 31, by setting warning lamp 34, at least it is capable of the exception of display control module 30, it is optional
, when it is implemented, green light under 34 normal condition of warning lamp can be limited, show red light under abnormal conditions and sounded the alarm.
Optionally, control module 30 still further comprises operating status lamp 35, and control module 30 further includes the 5th switching molding
Block 361, operating status lamp 35 and the 5th switch module 361 are series between the both ends of second power supply module 31, the 5th switching molding
Block 361 can use relay.Specifically, the 5th switch module may include the 5th main contacts and the 5th coil 362, the 5th
Main contacts and operating status lamp 35 are series between the both ends of second power supply module 31.By the way that operating status lamp 35 is arranged, at least
Can display control module 30 whether work normally, preferably to optimize the performance of capacitance testing device.
Please refer to fig. 5, Fig. 5 shows the signal pins control figure of the controller of the utility model embodiment.As
A kind of optional embodiment, charge-discharge parameter mentioned by the above various embodiments can specifically include filling for testing capacitance 100
The electric discharge duration of electric duration and/or testing capacitance 100.In order to preferably obtain testing capacitance 100 single charge duration and/or
The impulse discharge duration of testing capacitance 100, optionally, control module 30 further include controller 40, and controller 40 and third switch
Module 321 and the connection of the 4th switch module 331.Controller 40 is configured as the charging of testing capacitance 100 in record test process
Duration and electric discharge duration, and when the charging duration of testing capacitance 100 reaches predetermined charging duration, control third switch module
321 disconnect, and when the electric discharge duration of testing capacitance 100 reaches predetermined discharge duration, the 4th switch module 331 of control is disconnected.With
Upper mentioned charging duration can be the duration of single charge, likewise, mentioned electric discharge duration can be putting for single
Electric duration.
Capacitance testing device can also include third power module 41, and third power module 41 is specifically as follows 24V power supply
Module, the power input of controller 40 are connect with the anode of third power module 41, the tertiary coil of third switch module 321
322, one end of the 4th coil 332 of the 4th switch module 331 and the 5th coil 362 of the 5th switch module 361 respectively with control
The output end of device 40 processed connects and the other end is connect with the cathode of third power module 41 respectively, by above-mentioned setting, so that control
Molding block 30 can preferably control testing capacitance 100 and automatically switch between charging circuit 10 and discharge circuit 20.
The capacitance testing device that the utility model the above various embodiments provides, can fill single testing capacitance 100
Discharge test, certainly, this can also be to two or more to be measured in some other examples for a kind of optional mode
Capacitor 100 carries out charge and discharge test.
Therefore, as an alternative embodiment, capacitance testing device provided by the embodiment of the utility model, charging
The quantity of circuit 10 and discharge circuit 20 is two or more, to carry out charge and discharge, tool to two or more testing capacitance 100
Body implement when, the quantity of charging circuit 10 and discharge circuit 20 it is identical and correspond in groups, same group of charging circuit 10 and
Discharge circuit 20 can carry out charge and discharge test to a testing capacitance 100.
Referring to Figure 6 together, Fig. 6 shows the structural representation of the capacitance testing device of another embodiment of the utility model
Figure.As shown in fig. 6, optional, the charging circuit 10 of capacitance testing device and the quantity of discharge circuit 20 are two, because
This, which can carry out charge and discharge test, two charging circuits 10 and two to two testing capacitances 100 simultaneously
A discharge circuit 20 is controlled by same controller 40, therefore, in order to preferably control the charge and discharge to two testing capacitances 100,
Control module 30 is configured as the control of the property of can choose to one or two of two or more testing capacitance 100 or more
Testing capacitance 100 is charged and/or is discharged.To better meet the charge and discharge opportunity of different testing capacitances 100.
Capacitance testing device provided by the embodiment of the utility model, its working principle is that: the first power supply is arranged in startup power supply
The voltage of module 11 is U0, and control module 30 sets charge and discharge cycles number T, and output charging instruction, operating status lamp 35 are beaten
Open instruction, third switch module 321 works, the third main contacts closure of third switch module 321, and the of first switch module 12
One coil 122 work, the first main contacts 121 closure of first switch module 12, forms charging circuit 10, gives testing capacitance 100
Charging, by time t1, testing capacitance 100 charges to U0,30 charge closing instruction of control module, and charging circuit 10 disconnects, fortune
Row status lamp 35 is synchronous with charging work to carry out.The output electric discharge instruction of controller 40, the work of the 4th switch module 331, the 4th opens
Close the 4th main contacts closure of module 331, the second coil 212 work of second switch module 21, the of second switch module 21
Two main contacts 211 closure, forms discharge circuit 20, and testing capacitance 100 is discharged to 0V by time t2 by load 22, once fills
Electric discharge is completed, and controller 40 can be recycled T times by above step and carry out automatically controlling charge and discharge test.
In order to better understand capacitance testing device provided by the embodiment of the utility model, below in conjunction with specific example pair
The working principle of the capacitance testing device of the utility model embodiment is introduced.Example: by the present apparatus to thin-film capacitor into
Row charge and discharge, set first 13 resistance of current limiting element as R1, load 22 resistance be R2, charging voltage U0, to the charge and discharge time into
Row calculates.
Such as: 420uF/1100VDC thin-film capacitor, peak inrush currentFor 2.5kA, tried according to the durability of GB/T17702
Test 1000 charge and discharge of intermediate test item, discharge current 1.4
Charging voltage:
Electric discharge: R represents the resistance R2 of load 22 in following equation.
Ut=U0*exp (- t/RC) Ut is any time t, the voltage value on capacitor.
As t=RC, capacitance voltage Ut=0.37U0；
As t=2RC, capacitance voltage=0.135U0；
As t=3RC, capacitance voltage Ut=0.05U0；
As t=4RC, capacitance voltage Ut=0.018U0；
As t=5RC, capacitance voltage=0.0067U0；
As it can be seen that the electric discharge of testing capacitance 100 terminates substantially after 5RC.
(5RC=5R2*420uF=2.1R2 ms)；
Ut=0.0067*U0=0.0067*1.4*2500A*R2=23.45R2 (V)；
Make Ut as close possible to 0, load 22 resistance need it is sufficiently small.Due to U0=1.4R2 need to make U0 slightly larger than rated direct voltage UN1100V, so R2=1100/3500=
0.312 Ω ≈, 0.35 Ω, then U0=1225V.
(5RC=2.1R2=0.735 ms)；
That is, discharge time t2=0.735 (ms).
Charging: R represents the resistance R1 of current limiting element 13 in following equation.Charging limit U0=E=1225V.
Ut=E* [1-exp (- t/RC)]；
As t=RC, capacitance voltage=0.63E；
As t=2RC, capacitance voltage=0.86E；
As t=3RC, capacitance voltage=0.95E；
As t=4RC, capacitance voltage=0.98E；
As t=5RC, capacitance voltage=0.99E；
As it can be seen that charging process terminates substantially after 5 RC.
(5RC=5R1*420uF=2.1R1 ms)；
It charges average current i=q/t=CU/t=420uF*1225V/ (5RC)=245/R1 (V)；
13 value of current limiting element cannot too greatly can not be too small, too big to be not easy to buy, and be easy variate, resistance is too small must
Surely larger current is needed, increases power consumption, and adjustable constant-flow constant voltage source maximum output current is 1A, therefore R1 type selecting is 2k
Ω。
That is, charging time t1=5RC=4.2 (s)
The charge-discharge parameter for the testing capacitance 100 that example provides is determined by calculation, if the charging time is 4.2s, when electric discharge
Between be 0.735ms, charging times and discharge time are 1000 times, by above-mentioned charge-discharge parameter input controller 40, so as to be measured
It discharges after the charging of capacitor 100 4.2s, charges after the 0.735ms that discharges, recycled 1000 times with this again, complete 420uF/
The charge and discharge test of 1100VDC thin-film capacitor.
It is verified through practical operation, capacitor provided by the embodiment of the utility model surveys device, relative to manual operation, can incite somebody to action
Operation can be completed by 2-3 people/time be reduced to 1 person-time in operator, saves human cost, meanwhile, work flow is more succinct,
Faster, the time used in thin-film capacitor charge and discharge 1000 times is reduced to 6h by original 20h to efficiency.
To sum up, capacitance testing device provided by the embodiment of the utility model, because it includes filling with what testing capacitance 100 was connect
Circuit 10, the discharge circuit 20 being connect with testing capacitance 100, control module 30 and controller 40, to testing capacitance 100
When carrying out charge-discharge test, it can be realized by charging circuit 10 and discharge circuit 20, also, control module 30 is according to electricity to be measured
The charge-discharge parameter control testing capacitance 100 of appearance 100 automatically switches between charging circuit 10 and discharge circuit 20, to be measured
Capacitor 100 carries out charge or discharge experiment, realizes the automatic control of 100 charge and discharge of testing capacitance test, without human intervention,
Convenient for the charge and discharge test to capacitor, the efficiency and safety of test can be improved.
Referring to Figure 7 together, Fig. 7 shows the structural schematic diagram of the capacity measurement equipment of the utility model embodiment.This
Utility model embodiment provides a kind of capacity measurement equipment, including shell 200 and above-mentioned capacitance testing device, capacity measurement
Device is set to shell 200, optional in order to preferably obtain electric current and/or voltage of the testing capacitance 100 in charging, electric discharge
, oscillograph 50 can be located at the outside of shell, meanwhile, warning lamp 34 can also be located at the outside of shell 200, more intuitively obtain
Know the abnormal conditions of test equipment.
Capacity measurement equipment provided by the embodiment of the utility model, because it includes the capacity measurement dress of the various embodiments described above
It sets, therefore, equally can be realized the automatic control of capacitor charge and discharge test, without human intervention, convenient for the charge and discharge to capacitor
Test improves the efficiency of test, also, by the way that corresponding shell is arranged, can further increase the aesthetics and peace of equipment
Quan Xing, use easy to spread.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of capacitance testing device, which is characterized in that including the charging circuit (10) being connect with testing capacitance (100) and institute
State the discharge circuit (20) and control module (30) of testing capacitance (100) connection；
The control module (30) controls the testing capacitance (100) according to the charge-discharge parameter of the testing capacitance (100) and exists
Automatically switch between the charging circuit (10) and the discharge circuit (20), to charge to the testing capacitance (100)
Or discharge test.
2. capacitance testing device according to claim 1, which is characterized in that the charging circuit (10) includes the first power supply
One end of module (11), first switch module (12) and current limiting element (13), the testing capacitance (100) passes through described first
Switch module (12) and the current limiting element (13) are connect with one end of first power module (11), the testing capacitance
(100) the other end is connect with the other end of first power module (11).
3. capacitance testing device according to claim 2, which is characterized in that the discharge circuit (20) includes second switch
Module (21) and load (22), the second switch module (21) and the load (22) are connected on the testing capacitance (100)
Both ends between.
4. capacitance testing device according to claim 3, which is characterized in that the first switch module (12) includes first
Coil (122) and the first auxiliary contact (123), the second switch module (21) include the second coil (212) and the second auxiliary
Contact (213), the control module (30) include third switch module (321), the 4th switch module (331) and second source mould
Block (31), the third switch module (321), second auxiliary contact (213) and the first coil (122) are series at institute
It is the 4th switch module (331), first auxiliary contact (123), described between the both ends for stating second power supply module (31)
Second coil (212) is series between the both ends of the second power supply module (31).
5. capacitance testing device according to claim 4, which is characterized in that the control module (30) further comprises police
Show lamp (34), the warning lamp (34) is connected between the both ends of the second power supply module (31)；
And/or the control module (30) further comprises operating status lamp (35) and the 5th switch module (361), it is described
Operating status lamp (35) and the 5th switch module (361) are series between the both ends of the second power supply module (31).
6. capacitance testing device according to claim 4, which is characterized in that the charge-discharge parameter includes the electricity to be measured
Hold the charging duration and electric discharge duration of (100)；
The control module (30) further includes controller (40), the controller (40) and the third switch module (321) and
4th switch module (331) connection；
The controller (40) is configured as the charging duration of testing capacitance (100) described in record test process and described
Electric discharge duration, and when the charging duration of the testing capacitance (100) reaches predetermined charging duration, it controls the third and opens
It closes module (321) to disconnect, when the electric discharge duration of the testing capacitance (100) reaches predetermined discharge duration, described in control
4th switch module (331) disconnects.
7. according to capacitance testing device described in claim 3 to 6 any one, which is characterized in that the first switch module
It (12) further include the first main contacts (121), the institute that one end of the testing capacitance (100) passes through the first switch module (12)
It states the first main contacts (121) and the current limiting element (13) to connect with one end of first power module (11), described
One main contacts (121) includes one or concatenated multiple switch device；
And/or the second switch module (21) further includes the second main contacts (211), the second switch module (21) passes through
Second main contacts (211) and load (22) are connected between the both ends of the testing capacitance (100), second main contacts
It (211) include one or concatenated multiple switch device.
8. according to claim 1 to capacitance testing device described in 6 any one, which is characterized in that the charging circuit (10)
Quantity with the discharge circuit (20) is two or more, is filled with the testing capacitance described in two or more (100)
Electric discharge；
The control module (30) is configured as one of selective control in testing capacitance described in two or more (100)
Or testing capacitance described in two or more (100) is charged and/or is discharged.
9. according to claim 1 to capacitance testing device described in 6 any one, which is characterized in that further comprise oscillograph
(50), the oscillograph (50) is connected to the both ends of the testing capacitance (100), to show the electricity of the testing capacitance (100)
Stream and/or voltage.
10. a kind of capacity measurement equipment, which is characterized in that including shell (200) and such as claim 1 to 9 any one institute
The capacitance testing device stated, the capacitance testing device are set to the shell (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822057946.8U CN209296837U (en) | 2018-12-07 | 2018-12-07 | Capacitance testing device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822057946.8U CN209296837U (en) | 2018-12-07 | 2018-12-07 | Capacitance testing device and equipment |
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|---|---|
| CN209296837U true CN209296837U (en) | 2019-08-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI724955B (en) * | 2020-07-28 | 2021-04-11 | 興城科技股份有限公司 | Capacitor test system and generating device of adjustable voltage drop for micro short |
| CN113489098A (en) * | 2021-07-06 | 2021-10-08 | 南京绿索电子科技有限公司 | Automatic charging and discharging circulation device and method for super capacitor module |
| CN115343515A (en) * | 2022-10-17 | 2022-11-15 | 基合半导体（宁波）有限公司 | Analog front end circuit, capacitance measuring circuit, chip and electronic equipment |
-
2018
- 2018-12-07 CN CN201822057946.8U patent/CN209296837U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI724955B (en) * | 2020-07-28 | 2021-04-11 | 興城科技股份有限公司 | Capacitor test system and generating device of adjustable voltage drop for micro short |
| CN113489098A (en) * | 2021-07-06 | 2021-10-08 | 南京绿索电子科技有限公司 | Automatic charging and discharging circulation device and method for super capacitor module |
| CN115343515A (en) * | 2022-10-17 | 2022-11-15 | 基合半导体（宁波）有限公司 | Analog front end circuit, capacitance measuring circuit, chip and electronic equipment |
| CN115343515B (en) * | 2022-10-17 | 2023-03-07 | 基合半导体（宁波）有限公司 | Analog front end circuit, capacitance measuring circuit, chip and electronic equipment |
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