CN202433458U - Charger testing device for providing accurate loads - Google Patents
Charger testing device for providing accurate loads Download PDFInfo
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- CN202433458U CN202433458U CN201220016982XU CN201220016982U CN202433458U CN 202433458 U CN202433458 U CN 202433458U CN 201220016982X U CN201220016982X U CN 201220016982XU CN 201220016982 U CN201220016982 U CN 201220016982U CN 202433458 U CN202433458 U CN 202433458U
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Abstract
The utility model discloses a charger testing device for providing accurate loads. The charger testing device comprises an output voltage control part and a resistance control part, wherein the output voltage control part and the resistance control part are connected with an industrial personal computer; the resistance control part comprises a first singlechip module and a load box; the first singlechip module is connected with the industrial personal computer; the load box comprises a plurality of load resistors, resistance values of the load resistors are in geometric progression arrangement, and a geometric coefficient is 1.4 to 1.6; the load resistors are connected in parallel and are connected with a relay unit for controlling the in-parallel combination of the load resistors; and input/output pins of the first singlechip module are connected with an input terminal of the relay unit respectively. According to the charger testing device, the large-batch load resistors with different resistance values are selected, the geometric coefficient of the arrangement of the resistance values of the load resistors is 1.4 to 1.6, and the combination accuracy of the resistors is improved; and calculation is performed by replacing a singlechip with the industrial personal computer, so that the problem of large calculated amount is solved.
Description
Technical field
The utility model relates to a kind of charging set pick-up unit, especially can be the pick-up unit that tested charging set provides accurate load.
Background technology
220V or 380V battery charger characteristic test method be comparative maturity, and relevant standard is issued, the test charging set precision of voltage regulation, and precision of steady current needs the accurately resistance value of change ohmic load, and this often compares difficulty.
The general resistive load of selecting a collection of different resistances is switched through switch, gating a part of load wherein, and the parallel connection combination obtains required resistance.Under the fewer load situation of (being less than 18), through the method for exhaustion, can calculate the load combinations that approaches required resistance most, but under the less situation of pull-up resistor number, resistance that is combined into and required resistance error are bigger by single-chip microcomputer.In duty factor more (greater than 30), calculate required load combinations through the method for exhaustion, calculated amount is too big, and existing single-chip microcomputer is not competent.Therefore need suitable method, solve the contradiction between resistance combination precision and the calculated amount.
The utility model content
In order to overcome the deficiency of above-mentioned prior art, the purpose of the utility model is to provide a kind of charging set proving installation that accurate load is provided, and is difficult to the accurately problem of control to solve resistance of the prior art.
To achieve these goals, the technical scheme of the utility model is following:
A kind of charging set proving installation that accurate load is provided; Comprise output voltage control section and resistance control section, it is characterized in that the output voltage control section all is connected with industrial computer with the resistance control section; Said resistance control section comprises first one-chip computer module and load box; First one-chip computer module is connected with industrial computer, comprises several pull-up resistors in the said load box, the pull-up resistor resistance be arranged as Geometric Sequence: the geometric ratio coefficient is 1.4-1.6; Said pull-up resistor connects with parallel way, and pull-up resistor is connected with the relay group that makes up in order to the parallel connection of control load resistance, and the pin of the input and output of first one-chip computer module is connected with the input terminal of relay group respectively.
In a preferred embodiment of the utility model, the number of pull-up resistor is 30-50 in the load box.
In a preferred embodiment of the utility model, the pull-up resistor resistance be arranged as Geometric Sequence: the minimum load resistance is 1 Europe, and the geometric ratio coefficient is 1.5.
In a preferred embodiment of the utility model; Said output voltage control section comprises second singlechip module and pressure regulator, the input terminal of the analog to digital converter of second singlechip module respectively with pressure regulator on the lead-out terminal, the lead-out terminal of current sensor of voltage sensor be connected through lead.
The utility model is selected the pull-up resistor of large batch of different resistances for use, and the geometric ratio coefficient that the pull-up resistor resistance is arranged is 1.4-1.6, is that 2 pull-up resistor is compared with existing geometric ratio coefficient, has improved the combination degree of accuracy; Use the industry control computes without single-chip microcomputer, solved the big problem of calculated amount.
The characteristics of the utility model can consult this case graphic and below better embodiment detailed description and obtain to be well understood to.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model.
Fig. 2 is the synoptic diagram of the resistance control section of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, further set forth the utility model below in conjunction with specific embodiment.
As illustrated in fig. 1 and 2, a kind of charging set proving installation that accurate load is provided is mainly used in 220V, the 380V DC test charging set precision of voltage regulation, precision of steady current.Comprise output voltage control section and resistance control section, the output voltage control section all is connected with industrial computer 100 with the resistance control section.
The resistance control section comprises first one-chip computer module 210 and load box 220.9 pin serial line interface COM1 of input and output connect first one-chip computer module 210 through RS-232 serial port connecting wire 110 on the industrial computer 100.First one-chip computer module 210 is responsible for the required resistance value of combination realization in the control load case.Comprise several pull-up resistors 221 (number of pull-up resistor be 30-50) in the load box 220, the pull-up resistor resistance be arranged as Geometric Sequence: minimum resistance is 1 Europe, and the geometric ratio coefficient is 1.4-1.6, and in the present embodiment, the geometric ratio coefficient is 1.5.Be in the load box, the pull-up resistor resistance is chosen as: 1 Europe, 1.5 Europe; 2.25 Europe ..., promptly each resistance is 1.5 times of a last resistance, compared with 1 traditional Europe; 2 Europe, 4 Europe ... (i.e. 8421 patterns, the geometric ratio coefficient is 2); Improve the combination degree of accuracy, used the industry control computes without single-chip microcomputer, solved the big problem of calculated amount.
Pull-up resistor 221 connects with parallel way, and pull-up resistor is connected with the relay group that makes up in order to the parallel connection of control load resistance, whether inserts load combinations by the control of relay group.The pin of the P0 mouth of first one-chip computer module, P1 mouth, P2 mouth, P3 mouth, the input and output of P4 mouth respectively with load box on the input terminal of relay group be connected through lead.The input port of the analog to digital converter of first one-chip computer module 210 respectively with load box 220 on the lead-out terminal, the lead-out terminal of current sensor of voltage sensor be connected through lead.Industrial computer 100 is according to the needs of measuring the precision of voltage regulation or precision of steady current; Draw required load resistance; Through calculating, the coding of load combinations is issued first one-chip computer module 210 through the RS-232 serial port connecting wire, control a plurality of pull-up resistor combination parallel connections and reach required load resistance.
When the precision of voltage regulation of test charging set and precision of steady current, need to change the output voltage of charging set.The output voltage control section comprises second singlechip module 310 and pressure regulator 320.9 pin serial line interface COM2 of input and output connect second singlechip module 310 through RS-232 serial port connecting wire 120 on the industrial computer 100.The pin of the P0 mouth input and output of second singlechip module 310 is connected through lead with the input terminal of pressure regulator 320 respectively.The input terminal of the analog to digital converter of second singlechip module 310 respectively with pressure regulator 320 on the lead-out terminal, the lead-out terminal of current sensor of voltage sensor be connected through lead.Second singlechip module 310 is joined through drive wire 330 and pressure regulator 320.Industrial computer 100 sends to second singlechip module 310 through RS-232 serial port connecting wire 120 with required adjusting high-voltage value, second singlechip module 310 control pressure regulators 320 output charging set required voltages.Second singlechip module 310 is measured the output voltage of charging set simultaneously, output valve is delivered to industrial computer 100 through RS-232 serial port connecting wire 120 be shown to the user.
The precision of voltage regulation is meant when charging set is in the constant-voltage charge pattern, under the situation that the load resistance changes, and the quantitative performance of output voltage constant degree.Be under the situation of constant-voltage charge pattern at the tested charging set of setting; Industrial computer 100 software sections are at first set a load resistance; Pass through special algorithm then; Draw the pull-up resistor combination that approaches this load resistance most, then this pull-up resistor gated information is issued first one-chip computer module, 210, the first one-chip computer modules 210 according to this resistance gated information through RS-232 serial port connecting wire 110; Pin through input and output is a relay group gating part wherein, thereby the output of the pull-up resistor in the control load case is near the resistance of required resistance value.First one-chip computer module 210 collects the signal of voltage sensor and current sensor through carrying analog to digital converter then, thereby obtains voltage, the current value of charging set output.First one-chip computer module 210 is passed this voltage, current value back industrial computer 100 through the RS-232 serial port connecting wire 110 of input and output, shows as one group of test data.
Test precision of steady current and be meant when charging set is in constant current charging mode, under the situation that the load resistance changes, the quantitative test of output current constant degree.Be under the situation of constant current charging mode at the tested charging set of setting; Industrial computer 100 software sections are at first set a load resistance; Pass through special algorithm then; Draw the resistance combination that approaches this resistance most, then this pull-up resistor gated information is issued first one-chip computer module, 210, the first one-chip computer modules 210 according to this resistance gated information through RS-232 serial port connecting wire 110; Pin through input and output is a relay group gating part wherein, thereby the output of the resistance in the control load case is near the resistance of required resistance value.First one-chip computer module 210 collects the signal of voltage sensor and current sensor through carrying analog to digital converter then, thereby obtains voltage, the current value of charging set output.First one-chip computer module 210 is passed this voltage, current value back industrial computer 100 through the RS-232 serial port connecting wire 110 of input and output, shows as one group of test data.
More than show and described the advantage of ultimate principle, principal character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The just principle of describing in the foregoing description and the instructions of the utility model; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the scope of the utility model that requires protection.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. charging set proving installation that accurate load is provided; Comprise output voltage control section and resistance control section, it is characterized in that the output voltage control section all is connected with industrial computer with the resistance control section; Said resistance control section comprises first one-chip computer module and load box; First one-chip computer module is connected with industrial computer, comprises several pull-up resistors in the said load box, the pull-up resistor resistance be arranged as Geometric Sequence: the geometric ratio coefficient is 1.4-1.6; Said pull-up resistor connects with parallel way, and pull-up resistor is connected with the relay group that makes up in order to the parallel connection of control load resistance, and the pin of the input and output of first one-chip computer module is connected with the input terminal of relay group respectively.
2. the charging set proving installation that accurate load is provided according to claim 1 is characterized in that, the number of pull-up resistor is 30-50 in the load box.
3. the charging set proving installation that accurate load is provided according to claim 1 is characterized in that, the pull-up resistor resistance be arranged as Geometric Sequence: the minimum load resistance is 1 Europe, and the geometric ratio coefficient is 1.5.
4. the charging set proving installation that accurate load is provided according to claim 1; It is characterized in that; Said output voltage control section comprises second singlechip module and pressure regulator, the input terminal of the analog to digital converter of second singlechip module respectively with pressure regulator on the lead-out terminal, the lead-out terminal of current sensor of voltage sensor be connected through lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220016982XU CN202433458U (en) | 2012-01-16 | 2012-01-16 | Charger testing device for providing accurate loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220016982XU CN202433458U (en) | 2012-01-16 | 2012-01-16 | Charger testing device for providing accurate loads |
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| CN202433458U true CN202433458U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220016982XU Expired - Lifetime CN202433458U (en) | 2012-01-16 | 2012-01-16 | Charger testing device for providing accurate loads |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676025A (en) * | 2016-01-05 | 2016-06-15 | 天津大学 | Detection artificial load for movable electric vehicle charger |
| CN107300643A (en) * | 2016-04-15 | 2017-10-27 | 株洲中车时代电气股份有限公司 | A kind of vehicle traction system supply voltage mutant test device and method |
| CN107942159A (en) * | 2017-11-03 | 2018-04-20 | 国网浙江省电力公司电动汽车服务分公司 | DC charging motor power test loads |
| CN108680804A (en) * | 2018-02-01 | 2018-10-19 | 哈尔滨理工大学 | AC and DC resistance load system based on bus marco and control method |
| CN112373346A (en) * | 2020-12-01 | 2021-02-19 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Refinement control method for matrix V2G pile |
| CN117741316A (en) * | 2023-12-28 | 2024-03-22 | 岱新（上海）电子科技有限公司 | Vehicle-mounted charger test system |
-
2012
- 2012-01-16 CN CN201220016982XU patent/CN202433458U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676025A (en) * | 2016-01-05 | 2016-06-15 | 天津大学 | Detection artificial load for movable electric vehicle charger |
| CN107300643A (en) * | 2016-04-15 | 2017-10-27 | 株洲中车时代电气股份有限公司 | A kind of vehicle traction system supply voltage mutant test device and method |
| CN107942159A (en) * | 2017-11-03 | 2018-04-20 | 国网浙江省电力公司电动汽车服务分公司 | DC charging motor power test loads |
| CN107942159B (en) * | 2017-11-03 | 2020-07-03 | 国网浙江省电力公司电动汽车服务分公司 | Power test load of direct current charger |
| CN108680804A (en) * | 2018-02-01 | 2018-10-19 | 哈尔滨理工大学 | AC and DC resistance load system based on bus marco and control method |
| CN112373346A (en) * | 2020-12-01 | 2021-02-19 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Refinement control method for matrix V2G pile |
| CN117741316A (en) * | 2023-12-28 | 2024-03-22 | 岱新（上海）电子科技有限公司 | Vehicle-mounted charger test system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |