CN209327543U - A kind of high power DC electronic load - Google Patents
A kind of high power DC electronic load Download PDFInfo
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- CN209327543U CN209327543U CN201821489900.7U CN201821489900U CN209327543U CN 209327543 U CN209327543 U CN 209327543U CN 201821489900 U CN201821489900 U CN 201821489900U CN 209327543 U CN209327543 U CN 209327543U
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Abstract
The utility model discloses a kind of high power DC electronic loads, comprising: multiple independent power units of parallel coupled electrical connection, each independent power unit are made of a main control module and a power module connection；The main control module of each independent power unit is connected through data bus communication；The control terminal of the power module of each independent power unit is electrically connected with shared control bus.More independent power units formation high-power electronic load used in parallel can also be divided power to be independently operated, according to requirements and then realize that independent assortment constitutes the electronic load of diversified forms by this electronic load when using.This electronic load is not only easy to use, and the convenient individually replacement of each independent power unit, also convenient for maintenance.
Description
Technical field
The utility model relates to power supply test apparatus field more particularly to a kind of high power DC electronic loads.
Background technique
With the promotion for developing new energy direction, Development of Electric Vehicles is rapid.Currently, domestic electric car uses mostly enterprise
Based on the service types user such as industry or public transport, how to allow resident to receive and use electric vehicle, electrically-charging equipment it is mating just at electricity
The basic guarantee that electrical automobile is popularized in an all-round way.
Main charging equipment of the direct-current charging post as electric car, safety and reliability are directly related to electronic vapour
The reliability service of vehicle and all-round popularization.Therefore the test of the safety and reliability of charging pile is most important.At present to charging pile
Test usually have actual environment method of testing and electronic load method, due to actual environment method of testing there are low efficiency, it is at high cost with
And can not real-time judge and the problems such as accurate test charger output situation, mostly use electronic load method, electronic load method at present
It is that charging pile is tested using programmable electronic load.
Various programmable multifunctional wide scope electronic loads on the market possess the power bracket of 150W to 600KW, electric current electricity
The measurement accuracy of pressure is up to 1mV and 1mA, it is possible to provide constant voltage, constant current determine resistance and determine power dynamic operation mode.But
Current high-power electronic load uses multiple power module parallels, the operating mode of a main control unit, for example, one substantially
The electronic load of 15KW is formed in parallel by five power modules (i.e. power module one to five), the control of only one main control unit
(referring to Fig. 1), in this electronic load circuit control loop only one, different power grades corresponds to different circuit ginsengs
Number, but due to calibration parameter factory be whole installation, and only one main control unit control, user in use only
It can use as a high-power electronic load, when there is the equipment of different voltages grade, can only test one by one, use
Inconvenience improves efficiency if necessary, must need new electronic load.For example, when this electronic load is mentioned from 15kW power
It when height arrives 18kW, needs to change circuit inner parameter, recalibrates system parameter, scheduling and planning requires power supply to be increased to from 15kW
18kW also has same power grade.Therefore, this electronic load at least has the disadvantage in that from producing to using
(1) different capacity grade corresponds to different circuit parameters, is unfavorable for being mass produced；
(2) powerful inspection needs large power supply, and the requirement to power is big；
(3) it when increasing and decreasing power, needs to recalibrate；
(4) user use when can only separate unit use, cannot according to user require divide power to use；
(5) transport, assemble it is not flexible；
(6) maintainability is poor, if occur the damage of some power tube in system, volume operation cannot drop in entire machine.
Summary of the invention
Based on the problems of prior art, the purpose of the utility model is to provide a kind of high power DC Electronic Negatives
It carries, enables electronic load according to the electronic load for requiring point power to be independently operated, or freely form diversified forms.
The purpose of this utility model is achieved through the following technical solutions:
A kind of high power DC electronic load of the utility model embodiment, comprising:
Multiple independent power units of parallel coupled electrical connection, each independent power unit is by a main control module and a function
Rate module connection composition；
The main control module of each independent power unit is connected through data bus communication；
The control terminal of the power module of each independent power unit is electrically connected with shared control bus.
The high-power electricity provided by the embodiment of the utility model it can be seen from above-mentioned technical solution provided by the utility model
Son load parallel method, it has the advantage that:
By connecting multiple independent power unit parallel coupled electricals, since each independent power unit includes a master control
Module and a power module, and the main control module of each independent power unit is connected through data bus communication, each independent power list
The control terminal of the power module of member is electrically connected with shared control bus, and constituting a kind of each independent power unit can independently control
The high power DC electronic load of system, can be big by the formation used in parallel of more independent power units when this electronic load uses
Power electronic load can also divide power to be independently operated, according to requirements and then realize that independent assortment constitutes diversified forms
Electronic load.This electronic load is not only easy to use, and the convenient individually replacement of each independent power unit, also convenient for maintenance.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the parallel circuit structure schematic diagram for the high-power electronic load that the prior art provides；
Fig. 2 is the parallel circuit structure schematic diagram of high-power electronic load provided by the embodiment of the utility model；
In Fig. 1: 1- power module one；2- power module two；3- power module three；4- power module four；5- power module
Five；6- main control unit；
In Fig. 2: 21- power module one；22- power module two；23- power module three；24- power module four；25- power
Module five；26- main control module one；27- main control module two；28- main control module three；29- main control module four；30- main control module five.
Specific embodiment
Below with reference to the particular content of the utility model, to the technical scheme in the embodiment of the utility model carry out it is clear,
It is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, belong to the protection scope of the utility model.It is not described in detail in the utility model embodiment
Content belongs to the prior art well known to professional and technical personnel in the field.
As shown in Fig. 2, the utility model embodiment provides a kind of high power DC electronic load, comprising:
Multiple independent power units of parallel coupled electrical connection, each independent power unit is by a main control module and a function
Rate module connection composition；
The main control module of each independent power unit is connected through data bus communication；
The control terminal of the power module of each independent power unit is electrically connected with shared control bus.
In above-mentioned electronic load, main control module and the power module electrical connection of each independent power unit are at individual control
Loop processed.
In above-mentioned electronic load, in the multiple independent power unit, the power parameter of each independent power unit is all the same.
In above-mentioned electronic load, one is host in the multiple independent power unit, and other independent power units are
Slave.
Preferably, an independent power unit in multiple independent power units is set as host, other independent function
Rate unit is set as slave, specifically, each independent power unit is equipped with display screen, telling a lie at the interface that display screen is shown, that is logical
Crossing key the independent power unit is arranged is host mode or slave mode；Host is mutual by Compliance control bus and each slave
Connection, it may be convenient to control other slaves, can also be communicated by data/address bus and other slaves.
In above-mentioned electronic load, the multiple independent power unit is connected by external copper bar parallel coupled electrical.Specifically, each
The cathode output end of the power module of independent power unit is connected through external copper bar parallel coupled electrical, the power of each independent power unit
The cathode output end of module is connected through external copper bar parallel coupled electrical.
Specifically, the high power DC electronic load of the utility model, is formed in parallel, often using multiple independent power units
A independent power unit is equipped with main control module, has the function of independent control, specifically, multiple independent power units are by external
Copper bar is in parallel, and each independent power unit has independent main control module, i.e. an independent power unit has a control loop,
Each independent power unit can be worked by interface setting in host, slave both of which, and host and slave data pass through number
According to bus transfer data, slave is uniformly controlled by host by Compliance control bus.It can solve the existing big function of integration in this way
Rate DC Electronic Loads are only by multiple power module parallels, the shortcomings that can not individually controlling.Different capacity grade only needs basis
Demand parallel connection independent power unit, single independent power cell parameters are identical, so that the power mould of each independent power unit
Block facilitates batch production, and user can be by single independent power unit formation high power DC Electronic Negative used in parallel when using
It carries, can also be required that power is divided to be independently operated, the electronic load that diversified forms can be freely combined according to user；Transport can be single
A vanning, assembly are flexible；But it, can be by it after exiting in system or individually replacing when single independent power unit breaks down
It continues to run, maintainability is good, can simulate the use of the various complex situations in scene.
The utility model embodiment is specifically described in further detail below.
High power DC electronic load provided by the embodiment of the utility model, it is in parallel using multiple independent power units, respectively
Independent power unit has a main control module and a power module, and each independent power unit has independent circuit control
Loop, is able to achieve the operating mode that a main control module controls a power module, and each independent power unit is having the same
Circuit parameter.Referring to fig. 2, such as the load of a 15KW, (each independent power unit is by one for You Wutai independent power unit
Main control module and a power module are formed by connecting, wherein main control module one to five corresponds respectively to power module one to five) it is logical
External copper bar parallel connection is crossed, one of independent power unit is set as host, other four independent power units are set as slave,
Host and slave processors carry out data communication by RS485 (A mark is RS485 in Fig. 2), and by Compliance control bus, (B is identified in Fig. 2
It is Compliance control bus) each slave is uniformly controlled by host.
The high power DC electronic load of the utility model has the advantages that due to being multiple independent power units
It is formed in parallel, each independent power list all has main control module, can and be unified into high power DC electronic load, also can according to need
Power is divided to use, flexibility and scalability are high, practical.To high-power electronic load production, debugging, transport, use, dimension
The various aspects such as shield provide good technical support, improve production efficiency, reduce debugging cost, facilitate transport, increase
The application method of client simplifies maintenance, maintenance.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
Subject to the scope of protection of the claims.
Claims (5)
1. a kind of high power DC electronic load characterized by comprising
Multiple independent power units of parallel coupled electrical connection, each independent power unit is by a main control module and a power mould
Block connection composition；
The main control module of each independent power unit is connected through data bus communication；
The control terminal of the power module of each independent power unit is electrically connected with shared control bus.
2. high power DC electronic load according to claim 1, which is characterized in that each independent power unit
Main control module and power module electrical connection are at individual control loop.
3. high power DC electronic load according to claim 1, which is characterized in that the multiple independent power unit
In, the power parameter of each independent power unit is all the same.
4. high power DC electronic load according to any one of claims 1 to 3, which is characterized in that the multiple independence
One is host in power cell, and other independent power units are slave.
5. high power DC electronic load according to any one of claims 1 to 3, which is characterized in that the multiple independence
Power cell is connected by external copper bar parallel coupled electrical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821489900.7U CN209327543U (en) | 2018-09-12 | 2018-09-12 | A kind of high power DC electronic load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821489900.7U CN209327543U (en) | 2018-09-12 | 2018-09-12 | A kind of high power DC electronic load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100661A (en) * | 2018-09-12 | 2018-12-28 | 北京大华无线电仪器有限责任公司 | A kind of high power DC electronic load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100661A (en) * | 2018-09-12 | 2018-12-28 | 北京大华无线电仪器有限责任公司 | A kind of high power DC electronic load |
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