CN217034226U - Calibration device - Google Patents
Calibration device Download PDFInfo
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- CN217034226U CN217034226U CN202220230439.3U CN202220230439U CN217034226U CN 217034226 U CN217034226 U CN 217034226U CN 202220230439 U CN202220230439 U CN 202220230439U CN 217034226 U CN217034226 U CN 217034226U
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Abstract
The application discloses verifying attachment includes: a housing; the checking circuit comprises a first electrode, a second electrode, a first checking circuit, a second checking circuit and a selection switch; the first electrode and the second electrode are arranged on the shell and are respectively used for connecting two testing end electrodes of the insulation testing equipment; the first checking circuit and the second checking circuit are connected between the first electrode and the second electrode and arranged in the shell, the resistance value of the first checking circuit is larger than a preset standard value, and the resistance value of the second checking circuit is smaller than the preset standard value; the selection switch is arranged on the shell and used for selecting the first checking circuit to be conducted or selecting the second checking circuit to be conducted. The checking device is simple in structure and convenient to operate, and checking cost can be reduced.
Description
Technical Field
The application relates to the technical field of test tools, in particular to a checking device.
Background
The power battery module needs to be subjected to insulation testing in the production process, and the insulation testing equipment for the insulation testing needs to be subjected to precision verification periodically so as to verify whether the testing precision (namely the testing range) of the insulation testing equipment meets the testing standard or not.
At present, an external metering detection mechanism adopts a standard instrument to carry out precision calibration on insulation test equipment, and the calibration method is high in cost.
SUMMERY OF THE UTILITY MODEL
The application provides a calibration equipment can improve the problem that current insulation test equipment check-up is with high costs.
The embodiment of the application provides a checking device, includes:
a housing;
the checking circuit comprises a first electrode, a second electrode, a first checking circuit, a second checking circuit and a selection switch;
the first electrode and the second electrode are arranged on the shell and are respectively used for connecting two testing end electrodes of insulation testing equipment;
the first checking circuit and the second checking circuit are connected between the first electrode and the second electrode and arranged in the shell, the resistance value of the first checking circuit is larger than a preset standard value, and the resistance value of the second checking circuit is smaller than the preset standard value;
the selection switch is arranged on the shell and used for connecting the first checking circuit or the second checking circuit.
Optionally, the first calibration circuit includes a first resistor and a second resistor, and the second calibration circuit includes the second resistor;
the selection switch comprises a first fixed end, a second fixed end and a movable end;
the movable end is connected with the first electrode;
the first fixed end is sequentially connected with the first resistor, the second resistor and the second electrode;
the second fixed end is sequentially connected with the second resistor and the second electrode;
when the movable end is connected with the first fixed end, the first checking circuit is conducted;
when the movable end is connected with the second fixed end, the second check circuit is conducted.
Optionally, the housing includes an upper cover plate, a bottom plate, and a front side plate, a rear side plate, a left side plate, and a right side plate supported between the upper cover plate and the bottom plate;
the first electrode is arranged on the upper cover plate;
the second electrode is arranged on the front side plate;
the selection switch is arranged on the rear side plate.
Optionally, the position of the first electrode on the upper cover plate is adjustable.
Optionally, the first electrode is formed by a first conductive plate;
the upper cover plate is provided with a guide groove, and the first conductive plate is connected with the guide groove through a bolt.
Optionally, two guide grooves are arranged and are parallel to each other;
the first conductive plate is arranged between the two guide grooves in a support mode.
Optionally, the first conductive plate is provided with two.
Optionally, a first through hole is formed in the rear side plate, and the selection switch is located in the first through hole.
Optionally, the casing further includes a supporting plate, the supporting plate is supported between the upper cover plate and the bottom plate and is substantially parallel to the left side plate, a second through hole is provided in the supporting plate, and the second through hole is used for routing the calibration circuit.
Optionally, the upper cover plate includes a left protruding portion and a right protruding portion;
the left extending part extends out of the left side plate, and a first handle is arranged on the left extending part;
the right extending portion exceeds the right side plate, and a second handle is arranged on the right extending portion.
The checking device comprises a shell and a checking circuit, wherein the checking circuit comprises a first electrode, a second electrode, a first checking circuit, a second checking circuit and a selection switch; the first electrode and the second electrode are arranged on the shell and are respectively used for connecting two testing end electrodes of the insulation testing equipment; the first calibration circuit and the second calibration circuit are connected between the first electrode and the second electrode and arranged in the shell, the resistance value of the first calibration circuit is larger than a preset standard value, and the resistance value of the second calibration circuit is smaller than the preset standard value; the selection switch is arranged on the shell and used for connecting the first verification circuit to be conducted or the second verification circuit to be conducted. When the first verification circuit is conducted, the insulation test equipment can test the first resistance value of the first verification circuit; when the second check circuit switches on, the insulation test equipment can test the second resistance of the second check circuit, whether the insulation test function of the insulation test equipment is qualified or not can be judged by comparing the first resistance, the second resistance and the preset standard value, and the condition that the open circuit fault of the insulation test equipment per se is taken as the product insulation test is qualified can be avoided. This verifying attachment simple structure can check at any time, and convenient operation can reduce the check-up cost.
Drawings
The technical solutions and advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a verification apparatus provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a verification circuit provided in an embodiment of the present application;
fig. 3 is an exploded view of the verification device of fig. 1.
Detailed Description
Refer to the drawings wherein like reference numbers refer to like elements throughout. The following description is based on illustrated embodiments of the application and should not be taken as limiting the application with respect to other embodiments that are not detailed herein.
The power battery module needs to be subjected to insulation testing in the production process, and the insulation testing equipment for the insulation testing needs to be subjected to precision verification at regular intervals so as to verify whether the testing precision (namely the testing range) of the insulation testing equipment meets the testing standard or not. At present, an external metering detection mechanism adopts a standard instrument to carry out precision verification on insulation test equipment, and the method is long in period and high in cost.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a verification apparatus provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of a verification circuit provided in an embodiment of the present application, where the verification apparatus 100 includes a housing 10 and a verification circuit 20. The verification circuit 20 includes a first electrode 21, a second electrode 22, a first verification circuit 23, a second verification circuit 24, and a selection switch 25. The first electrode 21 and the second electrode 22 are disposed on the housing 10, and are respectively used for connecting two testing terminal electrodes of the insulation testing equipment. For example, the first electrode 21 is connected to the positive electrode of the insulation testing device, and the second electrode 22 is connected to the negative electrode of the insulation testing device, or the first electrode 21 is connected to the negative electrode of the insulation testing device, and the second electrode 22 is connected to the positive electrode of the insulation testing device, which can be selected according to actual requirements. The first verifying circuit 23 and the second verifying circuit 24 are connected between the first electrode 21 and the second electrode 22 and are disposed in the casing 10, the resistance value of the first verifying circuit 23 is greater than a preset standard value, and the resistance value of the second verifying circuit 24 is smaller than the preset standard value. A selector switch 25 is provided on the housing 10 for switching on the first or second verification circuit 23, 24.
It should be noted that the preset standard value is an insulation test value standard of insulation test equipment designed according to actual process requirements. For example, if the standard value of the insulation resistance of the power battery to be detected is greater than or equal to 500M Ω, the preset standard value is 500M Ω, in this case, the resistance of the first checking circuit 23 may be 500M Ω, 600M Ω, 800M Ω, 1100M Ω, and the like, and the resistance of the second checking circuit 24 may be 450M Ω, 400M Ω, 300M Ω, 150M Ω, and the like.
The operation principle of the verification apparatus 100 of the present embodiment is as follows: connecting two testing end electrodes of the insulation testing device with a first electrode 21 and a second electrode 22 of the verification apparatus 100 respectively, when the selection switch 25 is switched on the first verification circuit 23, the insulation testing device 101 is connected with the first verification circuit 23 through the first electrode 21 and the second electrode 22, and at this time, a first resistance value of the first verification circuit 23 can be read from the insulation testing device 101; the selection switch 25 is then disconnected from the first verification circuit 23 and the second verification circuit 24 is switched on, at which time the second resistance value of the second verification circuit 24 can be read from the insulation test device 101.
And when the first resistance value is larger than the preset standard value and the second resistance value is smaller than the preset standard value, the insulation test function verification result of the insulation test equipment is qualified.
When the first resistance value is greater than the preset standard value and the second resistance value is greater than the preset standard value, for example, the first resistance value and the second resistance value are both infinite, the test loop of the insulation test equipment may have an open-circuit fault, and therefore, the insulation test function check result of the insulation test equipment is unqualified.
When the first resistance value is smaller than the preset standard value, the insulation test function check result of the insulation test equipment can be directly judged to be unqualified.
It can be understood that, in the verification apparatus 100 of the present embodiment, when the first verification circuit 23 is turned on, the insulation test device may test a first resistance value of the first verification circuit 23; when the second check circuit switches on 24, the insulation test equipment can test the second resistance of the second check circuit 24, and whether the insulation test function of the insulation test equipment is qualified or not can be judged by comparing the first resistance, the second resistance and the preset standard value, and the condition that the open circuit fault of the insulation test equipment per se is taken as the product insulation test is qualified can be avoided. This verifying attachment simple structure can check at any time, and convenient operation can reduce the check-up cost.
In one embodiment, the first verification circuit 23 includes a first resistor R1 and a second resistor R2, and the second verification circuit 24 includes a second resistor R2; it is understood that the sum of the resistances of the first resistor R1 and the second resistor R2 is greater than a predetermined reference value, and the resistance of the second resistor R2 is less than the predetermined reference value. For example, when the predetermined standard value is 500M Ω, R1 and R2 may be 200M Ω and 400M Ω, respectively, or 400M Ω and 200M Ω, respectively, or 1000M Ω and 100M Ω, respectively, and so on. The selector switch 25 includes a first stationary terminal 251, a second stationary terminal 252, and a movable terminal 253; the moving end 253 is connected with the first electrode 21; the first fixed end 251 is sequentially connected with a first resistor R1, a second resistor R2 and a second electrode 22; the second stationary end 252 is connected with a second resistor R2 and the second electrode 22 in sequence; when the movable end 253 is connected with the first fixed end 251, the first checking circuit 23 is conducted; when the active terminal 253 is connected to the second inactive terminal 252, the second check circuit 24 is turned on. Taking the first resistor R1 and the second resistor R2 as 1000M Ω and 100M Ω, respectively, when the first verifying circuit 23 is turned on, the first resistance value is 1100M Ω and is greater than the predetermined standard value, and when the second verifying circuit 24 is turned on, the second resistance value is 100M Ω and is less than the predetermined standard value. The design requirements of the first verification circuit 23 and the second verification circuit 24 are met through the two resistors (R1 and R2), the series-parallel circuit and the selection switch 25, and the circuits are simple.
In one embodiment, referring to fig. 1 and 3, fig. 3 is an exploded view of the verification device of fig. 1. The casing 10 includes an upper cover plate 11, a bottom plate 12, a front side plate 13, a rear side plate 14, a left side plate 15 and a right side plate 16 which are oppositely arranged, it can be understood that the upper cover plate 11, the bottom plate 12, the front side plate 13, the rear side plate 14, the left side plate 15 and the right side plate 16 surround to form the casing 10, and the first verification circuit 23 and the second verification circuit 24 are arranged in the casing 10. The first electrode 21 is disposed on the upper cover plate 11; the second electrode 22 is disposed on the front side plate 13; the selection switch 25 is provided on the rear side plate 14, and for example, a first through hole 141 may be provided on the rear side plate 14, and the selection switch 25 is provided in the first through hole 141. In other examples, the housing 10 may further include a support plate 17, the support plate 17 being supported between the upper cover plate 11 and the bottom plate 12 and being substantially parallel to the left side plate 15, the support plate 17 may reinforce the support of the upper cover plate 11 to prevent the upper cover plate 11 from being deformed. The supporting plate 17 is further provided with a second through hole 171, and the second through hole 171 is used for routing the verification circuit 20, such as after a power line is connected to the first electrode 21, the power line passes through the second through hole 171, then is connected to the verification circuit 20, and then is connected to the second electrode 22.
As an example, with continued reference to fig. 1 and 3, the upper cover plate 11 may further include a left extension 112 and a right extension 113; the left protruding part 112 protrudes beyond the left side plate 15, and a first handle 114 is arranged on the left protruding part 112; the right protruding portion 113 protrudes beyond the right side plate 16, and a second handle 115 is provided on the right protruding portion 113. The first handle 114 and the second handle 115 may be gripping rings provided on the surface of the upper cover plate 11, and preferably, the first handle 114 and the second handle 115 are holes provided on the upper cover plate 11, for example, the holes may be racetrack-shaped, so that a tester can grasp the carrier verification device 100 from the left protrusion 112 and the right protrusion 113 through the holes.
Preferably, the position of the first electrode 21 on the upper cover plate 11 is adjustable. For example, the first electrode 21 may be a first conductive plate 21, the upper cover plate 11 is provided with a guide slot 111, the first conductive plate 21 may be connected to the guide slot 111 by a bolt, and the first electrode 21 may be connected to the verification circuit 20 by the guide slot 111. For example, when the position of the first conductive plate 21 needs to be adjusted, the bolt may be loosened, and then the first conductive plate 21 together with the bolt may be slid along the guide groove 111 to a target position, and then the bolt may be locked.
In one embodiment, the guide grooves 111 may be provided in two and parallel to each other; the first conductive plate 21 is bridged between the two guide grooves 111. Two first conductive plates 21 may be provided. For example, the two first conductive plates 21 are each bridged between the two guide grooves 111. At this time, according to different test standards, two verification circuits 20 may be designed inside the housing 10, each verification circuit 20 is correspondingly connected to one first conductive plate 21 as a first electrode 21, and the two verification circuits 20 share the same second electrode 22. For example, one of the calibration circuits has a preset standard value of 500M Ω and is connected to one of the first conductive plates 21, and the other calibration circuit has a preset standard value of 1000M Ω and is connected to the other one of the first conductive plates 21. In this embodiment, the corresponding verification circuit 20 can be selected to access according to different test standards, so that the application range of the verification apparatus 100 is expanded.
The verification device provided by the embodiment of the present application is described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
In addition, in the description of the present application, it is to be understood that the terms "upper", "bottom", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. In addition, the same or different reference numerals may be used to identify structures having the same or similar characteristics. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
Claims (10)
1. A verification apparatus, comprising:
a housing;
the checking circuit comprises a first electrode, a second electrode, a first checking circuit, a second checking circuit and a selection switch;
the first electrode and the second electrode are arranged on the shell and are respectively used for connecting two testing end electrodes of the insulation testing equipment;
the first checking circuit and the second checking circuit are connected between the first electrode and the second electrode and arranged in the shell, the resistance value of the first checking circuit is larger than a preset standard value, and the resistance value of the second checking circuit is smaller than the preset standard value;
the selection switch is arranged on the shell and used for connecting the first checking circuit or the second checking circuit.
2. The verification apparatus of claim 1, wherein the first verification circuitry comprises a first resistor and a second resistor, and the second verification circuitry comprises the second resistor;
the selection switch comprises a first fixed end, a second fixed end and a movable end;
the movable end is connected with the first electrode;
the first fixed end is sequentially connected with the first resistor, the second resistor and the second electrode;
the second fixed end is sequentially connected with the second resistor and the second electrode;
when the movable end is connected with the first fixed end, the first checking circuit is conducted;
when the movable end is connected with the second fixed end, the second check circuit is conducted.
3. The verification device of claim 1, wherein the housing includes an upper cover plate, a bottom plate, and a front side plate, a rear side plate, a left side plate, and a right side plate supported between the upper cover plate and the bottom plate;
the first electrode is arranged on the upper cover plate;
the second electrode is arranged on the front side plate;
the selection switch is arranged on the rear side plate.
4. The verification device of claim 3, wherein a position of the first electrode on the upper cover plate is adjustable.
5. The verification device of claim 4, wherein the first electrode is comprised of a first conductive plate;
the upper cover plate is provided with a guide groove, and the first conductive plate is connected with the guide groove through a bolt.
6. The checking apparatus according to claim 5, wherein the guide grooves are provided in two and parallel to each other;
the first conductive plate is erected between the two guide grooves.
7. A verification device according to claim 6, wherein there are two of said first conductive plates.
8. The verification device of claim 3, wherein the back plate is provided with a first through hole, and the selector switch is located in the first through hole.
9. The verification device of claim 3, wherein the housing further comprises a support plate supported between the upper cover plate and the bottom plate and substantially parallel to the left side plate, the support plate having a second through hole disposed thereon for the verification circuit trace.
10. The verification device of claim 3, wherein the upper cover plate comprises a left protrusion and a right protrusion;
the left extending part extends out of the left side plate, and a first handle is arranged on the left extending part;
the right extending portion exceeds the right side plate, and a second handle is arranged on the right extending portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220230439.3U CN217034226U (en) | 2022-01-27 | 2022-01-27 | Calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220230439.3U CN217034226U (en) | 2022-01-27 | 2022-01-27 | Calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217034226U true CN217034226U (en) | 2022-07-22 |
Family
ID=82451000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220230439.3U Active CN217034226U (en) | 2022-01-27 | 2022-01-27 | Calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217034226U (en) |
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2022
- 2022-01-27 CN CN202220230439.3U patent/CN217034226U/en active Active
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