CN203673043U - Testing device for cell with large-power full-range voltage output - Google Patents
Testing device for cell with large-power full-range voltage output Download PDFInfo
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- CN203673043U CN203673043U CN201320849855.2U CN201320849855U CN203673043U CN 203673043 U CN203673043 U CN 203673043U CN 201320849855 U CN201320849855 U CN 201320849855U CN 203673043 U CN203673043 U CN 203673043U
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Abstract
The utility model discloses a testing device suitable for a cell with large-power full-range voltage output. The cell testing device comprises an air switch, a three-phase filter, a main contactor, a pre-charge contactor, a three-phase transformer, a first-shift contactor, a second-shift contactor, a voltage-type PWM rectifier, an output-side pre-charge contactor, an output-side contactor, a capacitor, and a fast fuse. The three-phase transformer comprises a transformer primary side and a transformer secondary side. The transformer secondary side is provided with double voltage taps which are equipped with corresponding shift contactors. The voltage taps can be switched by selecting the shift contactors. The cell testing device has superior effects of convenience and practicality, and a capability of improving operation efficiency and equipment stability. By means of the isolating transformer with a secondary side equipped with multiple taps, a user may select whether to use automatic switching in order to achieve full-range output of DC-side voltage according to a requirement of a power factor.
Description
Technical field
The utility model relates to battery tester, relates in particular to a kind of battery tester that is applicable to high-power gamut Voltage-output.
Background technology
Increasingly serious along with the energy and environmental problem, the development of electric automobile has obtained the attention of height, and lithium-ion-power cell is because its energy density is high, cycle index becomes preferred power source more.Lithium-ion-power cell is from single-unit to application in groups, and range of capacity is very large.The impact that battery performance and parameter are subject to the many factors such as charge-discharge magnification, environment temperature, state-of-charge, using method and degree of aging presents significantly non-linear, and intercouples.In order better to promote the application technology of lithium-ion-power cell, for testing its performance, the electrokinetic cell equipment of simulating various actual conditions becomes key element.
Electrokinetic cell equipment can divide the serve as reasons testing apparatus that uses half control type device thyristor and the testing apparatus that uses full-control type device IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) substantially in the market.The testing apparatus of full-control type device IGBT, because of advantages such as it have unity power factor, ability transmitted in both directions, little to electric network pollution, dynamic response is fast, becomes the main flow of current electrokinetic cell equipment.
This testing apparatus generally adopts voltage-type Three-Phase PWM Rectifier and two-way DC/DC transducer two-stage structure, PWM rectifier need to be operated under High Power Factor when stable busbar voltage is provided, to improve the operational efficiency of testing apparatus and to reduce and the reactive power exchange of electrical network the two-way flow of DC/DC reversible transducer control bus side and the energy content of battery.In the time that PWM rectifier is operated in unity power factor, the lower limit of busbar voltage can be subject to the restriction of AC voltage.In the time that busbar voltage is set lower than this lower limit, will cause rectifier current on line side to distort, and produce phase shift, and cannot guarantee the control of net side unity power factor sine-wave current.Therefore,, in the time that outgoing side has gamut to require, the PWM rectifier of single-stage cannot meet the demands, and adds two-way DC/DC transducer stable busbar voltage can be carried out to the voltage transitions of wide region.
For the demand of DC voltage gamut output, use the structure of traditional rectifier and DC transducer twin-stage, although widened the scope of output voltage, realize FR Voltage-output.But a lot of problems are also brought in many-sides such as equipment control performance, production cost, power densities, it has not only increased the complicacy of the control of equipment, reduce the power density of equipment, also extend battery side and discharged and recharged switching time, reduce equipment operating efficiency simultaneously, caused larger electric energy loss.
If use single-stage PWM rectifier, in the fixing situation of transformer voltage ratio, while running on unity power factor, DC side output voltage is subject to the restriction of alternating current net side voltage, work in by force under low voltage condition, to make current on line side waveform that the concurrent looks of distortion occurs and move, the power factor of reduction equipment operation.Three-phase transformer can stop on the one hand the transmission of fractional harmonic between electrical network and transducer, when the large load equipment of start and stop, can reduce the impact on line voltage in addition, can also play the effect of safety isolation simultaneously.For voltage type PWM rectifier, under the certain condition of DC voltage, alternating current net side voltage is higher, and equipment loss can be lower.Therefore, we can, according to the scope demand of output voltage, reasonably design by the no-load voltage ratio to transformer, to improve plant efficiency.
And in the prior art, in the time that battery test apparatus is used single-stage PWM rectifier structure, although by the design to three-phase isolation transformer no-load voltage ratio, can make Three-Phase PWM Rectifier meet the demand of each VD grade.But for an equipment, because its transformer voltage ratio is fixed, under High Power Factor, the scope of VD is restricted, the gamut output that how to realize DC voltage becomes a problem demanding prompt solution.
Utility model content
In view of this,, in order to overcome the deficiencies in the prior art, the utility model provides a kind of battery tester of high-power gamut Voltage-output.Described battery test apparatus adopts single electrode voltage type PWM rectifier structure, three-phase transformer secondary is set to many tap transformers, different voltage taps are arranged to corresponding gear contactor, described equipment is according to the size requirements of output voltage, the selection of no-load voltage ratio gear can be automatically carried out, and then the output of DC voltage gamut can be realized.
For achieving the above object, the technical scheme of the battery tester of a kind of high-power gamut Voltage-output described in the utility model is: described battery test apparatus comprises air switch, Three-phase electric-wave filter, main contactor, preliminary filling contactor, three-phase transformer, the first gear contactor, second gear contactor, voltage type PWM rectifier, outgoing side preliminary filling contactor, outgoing side contactor, electric capacity and fastp-acting fuse.Described air switch is connected with three-phase transformer by Three-phase electric-wave filter, main contactor, preliminary filling contactor.Described three-phase transformer comprises transformer primary side and transformer secondary, described transformer primary side and the mutual electro-induction of transformer secondary.Described three-phase transformer is connected with voltage type PWM rectifier by the first gear contactor, second gear contactor.Described voltage type PWM rectifier is connected with electric capacity, outgoing side preliminary filling contactor, outgoing side contactor, between described electric capacity and outgoing side preliminary filling contactor, outgoing side contactor, fastp-acting fuse is set.Described three-phase transformer secondary is set to two voltage taps, described three-phase transformer arranges i.e. the first gear contactor and the second gear contactor of corresponding gear contactor to two voltage taps, by selecting described the first gear contactor or second gear contactor to switch voltage tap.
In the time of output side joint resistive load, when device power, according to the command value of output voltage, automatically select suitable voltage tap, by corresponding gear contactor the first gear contactor or the adhesive of second gear contactor, then adhesive preliminary filling contactor is to output capacitance precharge, after preliminary filling completes, adhesive main contactor, disconnects preliminary filling contactor, last adhesive outgoing side contactor, startup completes.
In the time of output side joint cell load, when device power, first adhesive outgoing side preliminary filling contactor, after preliminary filling finishes, adhesive outgoing side contactor, disconnects outgoing side preliminary filling contactor.According to the capacitance voltage value detecting, automatically select suitable voltage tap, by corresponding gear contactor the first gear contactor or the adhesive of second gear contactor, adhesive main contactor, startup completes.Guaranteeing under High Power Factor, battery test apparatus is used single-stage PWM rectifier structure, has realized the gamut output of DC voltage.In the time of output overcurrent, by fastp-acting fuse, described battery test apparatus is carried out to fuse protection.
Preferably, when less demanding to power factor, can be by selecting fixing gear contactor the first gear contactor or second gear contactor after described device power, realize the gamut output of DC voltage.
The superior effect of the battery tester of a kind of high-power gamut Voltage-output described in the utility model is: convenient and practical, can improve operational efficiency and stabilization of equipment performance.Whether be multitap isolating transformer by secondary is set, user can be according to the requirement to power factor, select to export with automatically cutting a grade gamut that realizes DC voltage.If need to be operated in the situation of High Power Factor, user can carry out relevant configuration, makes transformer secondary no-load voltage ratio gear contactor automatically switch to suitable gear.If in the less demanding situation of power factor, gear contactor can be configured to fixing contactor, realize the FR output of DC side.Compared with the battery test apparatus of traditional double level structure, the battery test apparatus of single-stage PWM rectifier structure has increased power density, has improved equipment operating efficiency, and greatly shortens battery charging and discharging switching time, has improved the stability of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the battery tester of high-power gamut Voltage-output described in the utility model;
Shown in figure: 1-air switch, 2-Three-phase electric-wave filter, 3-preliminary filling contactor, 4-main contactor, 5-three-phase transformer, 6-the first gear contactor, 7-second gear contactor, 8-voltage type PWM rectifier, 9-output capacitance, 10-fastp-acting fuse, 11-outgoing side preliminary filling contactor, 12-outgoing side contactor, 13-transformer primary side, 14-transformer secondary.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, described battery test apparatus comprises air switch 1, Three-phase electric-wave filter 2, main contactor 4, preliminary filling contactor 3, three-phase transformer 5, the first gear contactor 6, second gear contactor 7, voltage type PWM rectifier 8, outgoing side preliminary filling contactor 11, outgoing side contactor 12, electric capacity 9 and fastp-acting fuse 10.Described air switch is connected with three-phase transformer 5 by Three-phase electric-wave filter 2, main contactor 4, preliminary filling contactor 3.Described three-phase transformer 5 comprises transformer primary side 13 and transformer secondary 14, and described transformer primary side 13 and transformer secondary 14 carry out magnetic coupling by magnetic core.Described three-phase transformer 5 is connected with voltage type PWM rectifier 8 by the first gear contactor 6, second gear contactor 7.Described voltage type PWM rectifier 8 is connected with output capacitance 9, outgoing side preliminary filling contactor 11, outgoing side contactor 12, between described output capacitance 9 and outgoing side preliminary filling contactor 11, outgoing side contactor 12, fastp-acting fuse 10 is set.Described three-phase transformer 5 secondary are set to two voltage taps, described three-phase transformer 5 arranges i.e. the first gear contactor 6 and the second gear contactor 7 of corresponding gear contactor to two voltage taps, by selecting described the first gear contactor 6 or second gear contactor 7 to switch voltage tap.
In the time of output side joint resistive load, when device power, according to the command value of output voltage, automatically select suitable voltage tap, by corresponding gear contactor the first gear contactor 6 or 7 adhesives of second gear contactor, then adhesive preliminary filling contactor 3 is to output capacitance 9 precharge, after preliminary filling completes, adhesive main contactor 4, disconnects preliminary filling contactor 3, last adhesive outgoing side contactor 12, startup completes.
In the time of output side joint cell load, when device power, first adhesive outgoing side preliminary filling contactor 11, after preliminary filling finishes, adhesive outgoing side contactor 12, disconnects outgoing side preliminary filling contactor 11.According to electric capacity 9 magnitudes of voltage that detect, automatically select suitable voltage tap, by corresponding gear contactor the first gear contactor 6 or 7 adhesives of second gear contactor, adhesive main contactor 4, startup completes.Guaranteeing under High Power Factor, battery test apparatus is used single-stage PWM rectifier structure, has realized the gamut output of DC voltage.In the time of output overcurrent, by fastp-acting fuse 10, described battery test apparatus is carried out to fuse protection.
When less demanding to power factor, can be by selecting fixing gear contactor the first gear contactor 6 or second gear contactor 7 after described device power, realize the gamut output of DC voltage.
Finally it should be noted that: above embodiment only illustrates the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (3)
1. a battery test apparatus for high-power gamut Voltage-output, is characterized in that: comprise air switch, Three-phase electric-wave filter, main contactor, preliminary filling contactor, three-phase transformer, the first gear contactor, second gear contactor, voltage type PWM rectifier, outgoing side preliminary filling contactor, outgoing side contactor, electric capacity and fastp-acting fuse, described air switch passes through Three-phase electric-wave filter, main contactor, preliminary filling contactor is connected with three-phase transformer, and described three-phase transformer comprises transformer primary side and transformer secondary, described transformer primary side and the mutual electro-induction of transformer secondary, and described three-phase transformer is by the first gear contactor, second gear contactor is connected with voltage type PWM rectifier, described voltage type PWM rectifier and electric capacity, outgoing side preliminary filling contactor, outgoing side contactor connects, and described transformer secondary is set to two voltage taps, and described three-phase transformer arranges i.e. the first gear contactor and the second gear contactor of corresponding gear contactor to two voltage taps.
2. battery test apparatus according to claim 1, is characterized in that: between described electric capacity and outgoing side preliminary filling contactor, outgoing side contactor, fastp-acting fuse is set.
3. battery test apparatus according to claim 1, is characterized in that: described three-phase transformer is by selecting described the first gear contactor or second gear contactor to switch voltage tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849855.2U CN203673043U (en) | 2013-12-20 | 2013-12-20 | Testing device for cell with large-power full-range voltage output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849855.2U CN203673043U (en) | 2013-12-20 | 2013-12-20 | Testing device for cell with large-power full-range voltage output |
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| Publication Number | Publication Date |
|---|---|
| CN203673043U true CN203673043U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320849855.2U Expired - Fee Related CN203673043U (en) | 2013-12-20 | 2013-12-20 | Testing device for cell with large-power full-range voltage output |
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| CN (1) | CN203673043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567877A (en) * | 2021-06-09 | 2021-10-29 | 国电南瑞科技股份有限公司 | ISOP type direct current transformer power module test circuit and test method |
| CN116754975A (en) * | 2023-06-09 | 2023-09-15 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
-
2013
- 2013-12-20 CN CN201320849855.2U patent/CN203673043U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567877A (en) * | 2021-06-09 | 2021-10-29 | 国电南瑞科技股份有限公司 | ISOP type direct current transformer power module test circuit and test method |
| CN116754975A (en) * | 2023-06-09 | 2023-09-15 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
| CN116754975B (en) * | 2023-06-09 | 2024-04-23 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20191220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |