CN107942159B - Power test load of direct current charger - Google Patents
Power test load of direct current charger Download PDFInfo
- Publication number
- CN107942159B CN107942159B CN201711073402.4A CN201711073402A CN107942159B CN 107942159 B CN107942159 B CN 107942159B CN 201711073402 A CN201711073402 A CN 201711073402A CN 107942159 B CN107942159 B CN 107942159B
- Authority
- CN
- China
- Prior art keywords
- resistor
- relay
- normally open
- open switch
- resistors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a power test load of a direct current charger, which is characterized in that: the load module comprises a 10A voltage adjustable load module, a 5A voltage adjustable load module, a 1A voltage adjustable load module, a 0.5A voltage adjustable load module and a 0.1A voltage adjustable load module. According to the invention, through the modular design and optimization of the heat dissipation mode, the defects of complicated resistance process, large workload and the like of a common resistance box are overcome, and the effects of accuracy, high efficiency and convenience are achieved.
Description
Technical Field
The invention relates to the technical field of program-controlled test loads, in particular to a power test load of a direct-current charger.
Background
At present, most of program-controlled test loads adopt an active mode, discharge is carried out in a power electronic mode, and energy absorbed by the loads can be fed back to a power grid, so that the program-controlled test loads are mainly used for an aging test of power equipment. However, as a test load of the direct current charger, the active method has the following problems: 1. the installed charger cannot provide corresponding active load power on site. 2. The active load influences the output ripple coefficient of the charger, and the ripple coefficient of the charger cannot be evaluated.
Disclosure of Invention
The invention aims to provide a power test load of a direct current charger aiming at the problems in the prior art, wherein the load adopts a resistor array mode to realize that the input voltage of the load is 200-950V and the current is 0-250A, and can be continuously adjusted. Therefore, the test requirement of the charger under any voltage and any current is met.
In order to solve the technical problem, the invention discloses a power test load of a direct current charger, which is characterized in that: the load module comprises a 10A voltage-adjustable load module, a 5A voltage-adjustable load module, a 1A voltage-adjustable load module, a 0.5A voltage-adjustable load module and a 0.1A voltage-adjustable load module, wherein the 10A voltage-adjustable load module comprises a first single chip microcomputer, a relay K1-a relay K8 and resistors R1-a resistor R6 which are sequentially connected in series, the 5A voltage-adjustable load module comprises a second single chip microcomputer, a relay Q1-a relay Q8 and resistors R01-a resistor R06 which are sequentially connected in series, the 1A voltage-adjustable load module comprises a third single chip microcomputer, a relay P1-a relay P8 and resistors R001-a resistor R006 which are sequentially connected in series, the 0.5A voltage-adjustable load module comprises a fourth single chip microcomputer, a relay S1-a relay S8 and resistors R101-a resistor R106 which are sequentially connected in series, the 0.1A voltage-adjustable load module comprises a fifth single chip microcomputer, A relay T1-a relay T8, and resistors R201-R206 connected in series in sequence;
one end of the resistor R1 is connected with one end of a normally open switch of the relay K1, the other end of the normally open switch of the relay K1 is connected with a DC power supply anode, the normally open switch of the relay K2 is connected between one end and the other end of the resistor R1, the normally open switch of the relay K3 is connected between one end and the other end of the resistor R2, the normally open switch of the relay K4 is connected between one end and the other end of the resistor R3, the normally open switch of the relay K5 is connected between one end and the other end of the resistor R4, the normally open switch of the relay K6 is connected between one end and the other end of the resistor R5, the normally open switch of the relay K7 is connected between one end and the other end of the resistor R6, the other end of the resistor R6 is connected with one end of the normally open switch, the first single chip microcomputer is used for respectively transmitting control signals to the control ends of the relays K1-K8;
one end of the resistor R01 is connected with one end of a normally open switch of the relay Q1, the other end of the normally open switch of the relay Q1 is connected with a DC power supply anode, the normally open switch of the relay Q2 is connected between one end and the other end of the resistor R01, the normally open switch of the relay Q3 is connected between one end and the other end of the resistor R02, the normally open switch of the relay Q4 is connected between one end and the other end of the resistor R03, the normally open switch of the relay Q5 is connected between one end and the other end of the resistor R04, the normally open switch of the relay Q6 is connected between one end and the other end of the resistor R05, the normally open switch of the relay Q7 is connected between one end and the other end of the resistor R06, one end of the resistor R06, which is not connected with the resistor, one end of the normally open switch, the second single chip microcomputer is used for respectively transmitting control signals to the control ends of the relays Q1-Q8;
one end of a resistor R001 is connected with one end of a normally open switch of a relay P1, the other end of the normally open switch of the relay P1 is connected with a DC power supply anode, the normally open switch of the relay P2 is connected between one end of the resistor R001 and the other end, the normally open switch of a relay P3 is connected between one end of the resistor R002 and the other end, the normally open switch of a relay P4 is connected between one end of the resistor R003 and the other end, the normally open switch of a relay P5 is connected between one end of the resistor R004 and the other end, the normally open switch of a relay P6 is connected between one end of the resistor R006 and the other end, one end of the normally open switch of the relay P8 is connected with one end of the resistor R006 which is not connected with the resistor, the other end of the normally open switch of the relay P8 is connected with, the third single chip microcomputer is used for respectively transmitting control signals to the control ends of the relays P1-P8;
one end of the resistor R101 is connected with one end of a normally open switch of the relay S1, the other end of the normally open switch of the relay S1 is connected with a DC power supply anode, the normally open switch of the relay S2 is connected between one end and the other end of the resistor R101, the normally open switch of the relay S3 is connected between one end and the other end of the resistor R102, the normally open switch of the relay S4 is connected between one end and the other end of the resistor R103, the normally open switch of the relay S5 is connected between one end and the other end of the resistor R104, the normally open switch of the relay S6 is connected between one end and the other end of the resistor R105, the normally open switch of the relay S7 is connected between one end and the other end of the resistor R106, one end which is not connected with the resistor is connected with one end of the normally open switch of the relay S, the fourth singlechip is used for respectively transmitting control signals to the control ends of the relays S1-S8;
one end of the resistor R201 is connected with one end of a normally open switch of the relay T1, the other end of the normally open switch of the relay T1 is connected with a DC power supply anode, the normally open switch of the relay T2 is connected between one end and the other end of the resistor R201, the normally open switch of the relay T3 is connected between one end and the other end of the resistor R202, the normally open switch of the relay T4 is connected between one end and the other end of the resistor R203, the normally open switch of the relay T5 is connected between one end and the other end of the resistor R204, the normally open switch of the relay T6 is connected between one end and the other end of the resistor R205, the normally open switch of the relay T7 is connected between one end and the other end of the resistor R206, the end which is not connected with the resistor is connected with one end of the normally open switch of the relay T, and the fifth singlechip is used for respectively transmitting control signals to the control ends of the relays T1-T8.
The invention has the beneficial effects that:
the adjustable pure-resistance power load in an array mode meets the requirement of part 1 of a GB/T18487.1-2015 electric vehicle conduction charging system: the electrical performance test of the off-board charger specified in the general requirements is that the off-board charger outputs 200V-950V of voltage and 0-250A of output current. The power load adopts a modular design, the maximum output power of each module is 9.5kW, the maximum output current is 10A, and each module is provided with a singlechip to control resistance switching and is communicated with a control host machine in a 485 bus mode. The control host (single chip microcomputer) receives the instruction sent by the upper computer, the resistance values of the modules are automatically switched, the total output current is adjusted among the modules in a parallel connection mode, the control precision of the whole load can reach 3%, and the test requirements of the direct current charger on wide voltage range and large current are met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a flow chart of the working process of the present invention.
The load module with adjustable voltage is composed of a load module with adjustable voltage of 1-10A, a first single chip microcomputer of 1.1A, a load module with adjustable voltage of 2-5A, a second single chip microcomputer of 2.1A, a load module with adjustable voltage of 3-1A, a third single chip microcomputer of 3.1A, a load module with adjustable voltage of 4-0.5A, a fourth single chip microcomputer of 4.1A, a load module with adjustable voltage of 5-0.1A and a fifth single chip microcomputer of 5.1A.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the invention relates to a power test load of a direct-current charger, as shown in figure 1, which comprises a 10A voltage-adjustable load module 1(10A indicates that the module always works at 10A and below current, and the series resistance value is controlled by a control board, so that the module always works within 10A under 200V-950V), a 5A voltage-adjustable load module 2, a 1A voltage-adjustable load module 3, a 0.5A voltage-adjustable load module 4 and a 0.1A voltage-adjustable load module 5, wherein the 10A voltage-adjustable load module 1 comprises a first single chip microcomputer 1.1, a relay K1-a relay K8 and resistors R1-R6 which are sequentially connected in series, the 5A voltage-adjustable load module 2 comprises a second single chip microcomputer 2.1, a relay Q1-a relay Q8 and resistors R01-a resistor R06 which are sequentially connected in series, and the 1A voltage-adjustable load module 3 comprises a third single chip microcomputer 3.1, a third single chip microcomputer 2.1, a third single, The load module with the adjustable 0.5A voltage comprises relays P1-P8 and resistors R001-R006 connected in series in sequence, the load module with the adjustable 0.5A voltage comprises a fourth single chip microcomputer 4.1, relays S1-S8 and resistors R101-R106 connected in series in sequence, and the load module with the adjustable 0.1A voltage comprises a fifth single chip microcomputer 5.1, relays T1-T8 and resistors R201-R206 connected in series in sequence;
one end of the resistor R1 is connected with one end of a normally open switch of the relay K1, the other end of the normally open switch of the relay K1 is connected with a DC (direct current power supply) power supply anode, a normally open switch of the relay K2 is connected between one end and the other end of the resistor R1, a normally open switch of the relay K3 is connected between one end and the other end of the resistor R2, a normally open switch of the relay K4 is connected between one end and the other end of the resistor R3, a normally open switch of the relay K5 is connected between one end and the other end of the resistor R4, a normally open switch of the relay K6 is connected between one end and the other end of the resistor R5, a normally open switch of the relay K7 is connected between one end and the other end of the resistor R6, the other end of the resistor R6 is connected with one end of the normally, the first single chip microcomputer 1.1 is used for respectively transmitting control signals to the control ends of the relays K1-K8;
one end of the resistor R01 is connected with one end of a normally open switch of the relay Q1, the other end of the normally open switch of the relay Q1 is connected with a DC power supply anode, the normally open switch of the relay Q2 is connected between one end and the other end of the resistor R01, the normally open switch of the relay Q3 is connected between one end and the other end of the resistor R02, the normally open switch of the relay Q4 is connected between one end and the other end of the resistor R03, the normally open switch of the relay Q5 is connected between one end and the other end of the resistor R04, the normally open switch of the relay Q6 is connected between one end and the other end of the resistor R05, the normally open switch of the relay Q7 is connected between one end and the other end of the resistor R06, the other end of the resistor R06 is connected with one end of the normally open switch, the second singlechip 2.1 is used for respectively transmitting control signals to the control ends of the relays Q1-Q8;
one end of a resistor R001 is connected with one end of a normally open switch of a relay P1, the other end of the normally open switch of the relay P1 is connected with a DC power supply anode, the normally open switch of the relay P2 is connected between one end of the resistor R001 and the other end, the normally open switch of a relay P3 is connected between one end of the resistor R002 and the other end, the normally open switch of a relay P4 is connected between one end of the resistor R003 and the other end, the normally open switch of a relay P5 is connected between one end of the resistor R004 and the other end, the normally open switch of a relay P6 is connected between one end of the resistor R006 and the other end, the other end of the normally open switch of the relay P8 is connected with the other end of the resistor R006, the other end of the normally open switch of the relay P8 is connected with, the third singlechip 3.1 is used for respectively transmitting control signals to the control ends of the relays P1-P8;
one end of the resistor R101 is connected with one end of a normally open switch of the relay S1, the other end of the normally open switch of the relay S1 is connected with a DC power supply anode, the normally open switch of the relay S2 is connected between one end and the other end of the resistor R101, the normally open switch of the relay S3 is connected between one end and the other end of the resistor R102, the normally open switch of the relay S4 is connected between one end and the other end of the resistor R103, the normally open switch of the relay S5 is connected between one end and the other end of the resistor R104, the normally open switch of the relay S6 is connected between one end and the other end of the resistor R105, the normally open switch of the relay S7 is connected between one end and the other end of the resistor R106, the other end of the normally open switch of the relay S8 is connected with one, the fourth singlechip 4.1 is used for respectively transmitting control signals to the control ends of the relays S1-S8;
one end of the resistor R201 is connected with one end of a normally open switch of the relay T1, the other end of the normally open switch of the relay T1 is connected with a DC power supply anode, the normally open switch of the relay T2 is connected between one end of the resistor R201 and the other end of the resistor R201, the normally open switch of the relay T3 is connected between one end of the resistor R202 and the other end of the resistor R203, the normally open switch of the relay T4 is connected between one end of the resistor R203 and the other end of the resistor R204, the normally open switch of the relay T5 is connected between one end of the resistor R205 and the other end of the resistor R205, the normally open switch of the relay T7 is connected between one end of the resistor R206 and the other end of the normally open switch of the relay T8, the other end of the normally open switch of the relay T, and the fifth singlechip 5.1 is used for respectively transmitting control signals to the control ends of the relays T1-T8.
In the above technical solution, the resistors R1-R6 are all power resistors, the resistance of the resistor R1 is 2.5 Ω, the resistance of the resistor R2 is 5 Ω, the resistance of the resistor R3 is 7.5 Ω, the resistance of the resistor R4 is 10 Ω, the resistance of the resistor R5 is 25 Ω, and the resistance of the resistor R6 is 45 Ω.
In the above technical solution, the resistors R01-R06 are all power resistors, the resistance of the resistor R01 is 5 Ω, the resistance of the resistor R02 is 10 Ω, the resistance of the resistor R03 is 20 Ω, the resistance of the resistor R04 is 15 Ω, the resistance of the resistor R05 is 50 Ω, and the resistance of the resistor R06 is 90 Ω.
In the above technical solution, the resistors R001 to R006 are all power resistors, the resistance of the resistor R001 is 25 Ω, the resistance of the resistor R002 is 50 Ω, the resistance of the resistor R003 is 75 Ω, the resistance of the resistor R004 is 100 Ω, the resistance of the resistor R005 is 250 Ω, and the resistance of the resistor R006 is 450 Ω.
In the above technical solution, the resistors R101 to R106 are all power resistors, the resistance of the resistor R101 is 50 Ω, the resistance of the resistor R102 is 100 Ω, the resistance of the resistor R103 is 150 Ω, the resistance of the resistor R104 is 200 Ω, the resistance of the resistor R105 is 500 Ω, and the resistance of the resistor R106 is 900 Ω.
In the above technical solution, the resistors R201 to R206 are all power resistors, the resistance value of the resistor R201 is 250 Ω, the resistance value of the resistor R202 is 500 Ω, the resistance value of the resistor R203 is 750 Ω, the resistance value of the resistor R204 is 1000 Ω, the resistance value of the resistor R205 is 2500 Ω, and the resistance value of the resistor R206 is 4500 Ω.
In the technical scheme, the resistor R1 is made of 250W and 10A standard resistors, the resistor R2 is made of 500W and 10A standard resistors, the resistor R3 is formed by connecting 2 375W and 5A standard resistors in parallel, the resistor R4 is formed by connecting 2 500W and 5A standard resistors in parallel, the resistor R5 is formed by connecting 5 500W and 2A standard resistors in parallel, in consideration of the limit of the switching voltage of the relay, the resistor R6 is formed by connecting a 25 omega resistor and a 20 omega resistor in series, and the 20 omega resistor is formed by connecting 4 500W and 2.5A standard resistors in parallel.
In the technical scheme, the resistor R01 is made of 1 125W and 5A standard resistor, the resistor R02 is made of 1 250W and 5A standard resistor, the resistor R03 is made of 1 500W and 5A standard resistor, the resistor R04 is made of 1 375W and 5A standard resistor, the resistor R05 is formed by connecting 4 312W and 1.25A standard resistors in parallel, the resistor R06 is formed by connecting a 50 omega resistor and a 40 omega resistor in series, and the 40 omega resistor is formed by connecting 2 500W and 2.5A standard resistors in parallel.
In the above technical solution, the resistor R001 is made of 25W, 1A standard resistor, the resistor R002 is made of 50W, 1A standard resistor, the resistor R003 is made of 1 75W, 1A standard resistor, the resistor R004 is made of 1 100W, 1A standard resistor, the resistor R005 is made of 1 250W, 1A standard resistor, and the resistor R006 is made of 1 450W, 1A standard resistor.
In the above technical solution, the resistor R101 is made of 1 12.5W and 0.5A resistor, the resistor R102 is made of 125W and 0.5A resistor, the resistor R103 is made of 1 37.5W and 0.5A resistor, the resistor R104 is made of 1 50W and 0.5A resistor, the resistor R105 is made of 1 125W and 0.5A resistor, and the resistor R106 is made of 1 225W and 0.5A resistor;
the resistor R201 is made of 2.5W and 0.1A resistors, the resistor R202 is made of 5W and 0.1A resistors, the resistor R203 is made of 1 7.5W and 0.1A resistors, the resistor R204 is made of 1 10W and 0.1A resistors, the resistor R205 is made of 125W and 0.1A resistors, and the resistor R206 is made of 1 45W and 0.1A resistors.
In the invention, each load module is controlled by the single chip microcomputer to receive an RS485 control command, so that different resistor loads are controlled, and the load test of the direct current charger in constant current and constant voltage modes can be realized through different switching of the resistor arrays, wherein the working process is shown in FIG. 2; the single chip microcomputer in each load module realizes resistance value setting and resistance value change at a specified time interval through data communication with the upper computer.
The invention overcomes the defects that the current of the common pure resistance load is continuously adjustable, but the voltage can not be continuously adjustable, and realizes the continuous adjustment of the current of 0.1-250A and the direct adjustment of different voltages of 200-950V.
According to the test requirements of the off-board charger, the load is designed to be adjustable from 200V to 950V, the current is 0A to 250A, and the load is adjustable according to 0.1A step. The resistance calculation for up to 10A is shown in Table 1-1.
TABLE 1-1 load resistance calculation book (omega)
From the above table it can be seen that the design can be made according to 10A and the following modules, and the current variation is regulated by connecting 10A and the following modules in parallel under the condition of ensuring the voltage. The module design is shown in tables 1-2 according to the 25V voltage step requirement.
TABLE 1-2 resistance grading Table
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (6)
1. A power test load of a direct current charger is characterized in that: including adjustable load module of 10A voltage (1), adjustable load module of 5A voltage (2), adjustable load module of 1A voltage (3), adjustable load module of 0.5A voltage (4) and adjustable load module of 0.1A voltage (5), adjustable load module of 10A voltage (1) includes first singlechip (1.1), relay K1 ~ relay K8 and series connection's resistance R1 ~ resistance R6 in proper order, adjustable load module of 5A voltage (2) include second singlechip (2.1), relay Q1 ~ relay Q8 and series connection's resistance R01 ~ resistance R06 in proper order, adjustable load module of 1A voltage (3) include third singlechip (3.1), relay P1 ~ relay P8 and series connection's resistance R001 ~ resistance R006 in proper order, adjustable load module of 0.5A voltage (4) include fourth singlechip (4.1), The load module comprises a relay S1, a relay S8 and resistors R101 to R106 which are sequentially connected in series, wherein the 0.1A voltage adjustable load module (5) comprises a fifth single chip microcomputer (5.1), a relay T1 to a relay T8 and resistors R201 to R206 which are sequentially connected in series;
one end of a resistor R1 is connected with one end of a normally open switch of a relay K1, the other end of the normally open switch of the relay K1 is connected with a DC power supply anode, the normally open switch of the relay K2 is connected between one end and the other end of the resistor R1, the normally open switch of the relay K3 is connected between one end and the other end of the resistor R2, the normally open switch of a relay K4 is connected between one end and the other end of the resistor R3, the normally open switch of the relay K5 is connected between one end and the other end of the resistor R4, the normally open switch of the relay K6 is connected between one end and the other end of the resistor R5, the normally open switch of the relay K7 is connected between one end and the other end of the resistor R6, the end of the resistor R5 is not connected with one end of the normally open switch of the relay K8, the, the first single chip microcomputer (1.1) is used for respectively transmitting control signals to the control ends of the relays K1-K8;
one end of a resistor R01 is connected with one end of a normally open switch of a relay Q1, the other end of the normally open switch of the relay Q1 is connected with a DC power supply anode, the normally open switch of the relay Q2 is connected between one end and the other end of the resistor R01, the normally open switch of the relay Q3 is connected between one end and the other end of the resistor R02, the normally open switch of a relay Q4 is connected between one end and the other end of the resistor R03, the normally open switch of the relay Q5 is connected between one end and the other end of the resistor R04, the normally open switch of the relay Q6 is connected between one end and the other end of the resistor R05, the normally open switch of the relay Q7 is connected between one end and the other end of the resistor R06, the end of the resistor R05 is not connected with one end of the normally open switch of the relay Q8, the, the second single chip microcomputer (2.1) is used for respectively transmitting control signals to the control ends of the relays Q1-Q8;
one end of a resistor R001 is connected with one end of a normally open switch of a relay P1, the other end of the normally open switch of the relay P1 is connected with a DC power supply anode, the normally open switch of the relay P2 is connected between one end of the resistor R001 and the other end, the normally open switch of a relay P3 is connected between one end of the resistor R002 and the other end, the normally open switch of a relay P4 is connected between one end of the resistor R003 and the other end, the normally open switch of a relay P5 is connected between one end of the resistor R004 and the other end, the normally open switch of a relay P6 is connected between one end of the resistor R006 and the other end, one end of the resistor R006 which is not connected with the resistor R005 is connected with the normally open switch of the relay P8, the other end of the normally open switch of the relay P8 is connected with a DC power, the third single chip microcomputer (3.1) is used for respectively transmitting control signals to the control ends of the relays P1-P8;
one end of the resistor R101 is connected with one end of a normally open switch of the relay S1, the other end of the normally open switch of the relay S1 is connected with a DC power supply anode, the normally open switch of the relay S2 is connected between one end and the other end of the resistor R101, the normally open switch of the relay S3 is connected between one end and the other end of the resistor R102, the normally open switch of the relay S4 is connected between one end and the other end of the resistor R103, the normally open switch of the relay S5 is connected between one end and the other end of the resistor R104, the normally open switch of the relay S6 is connected between one end and the other end of the resistor R105, the normally open switch of the relay S7 is connected between one end and the other end of the resistor R106, one end of the resistor R105 is not connected with one end of the normally open switch of the relay S8, the fourth single chip microcomputer (4.1) is used for respectively transmitting control signals to the control ends of the relays S1-S8;
one end of the resistor R201 is connected with one end of a normally open switch of the relay T1, the other end of the normally open switch of the relay T1 is connected with a DC power supply anode, the normally open switch of the relay T2 is connected between one end of the resistor R201 and the other end of the resistor R201, the normally open switch of the relay T3 is connected between one end of the resistor R202 and the other end of the resistor R203, the normally open switch of the relay T4 is connected between one end of the resistor R203 and the other end of the resistor R204, the normally open switch of the relay T5 is connected between one end of the resistor R205 and the other end of the resistor R205, the normally open switch of the relay T6 is connected between one end of the resistor R206 and the other end of the resistor R205, the other end of the normally open switch of the relay T8 is connected with a DC power supply cathode, the fifth single chip microcomputer (5.1) is used for respectively transmitting control signals to the control ends of the relays T1-T8;
the resistor R1 is made of 250W and 10A standard resistors, the resistor R2 is made of 500W and 10A standard resistors, the resistor R3 is formed by connecting 2 375W and 5A standard resistors in parallel, the resistor R4 is formed by connecting 2 500W and 5A standard resistors in parallel, the resistor R5 is formed by connecting 5 500W and 2A standard resistors in parallel, the resistor R6 is formed by connecting 25 omega resistors and 20 omega resistors in series, and the 20 omega resistor is formed by connecting 4 500W and 2.5A standard resistors in parallel;
the resistor R01 is made of 1 125W and 5A standard resistor, the resistor R02 is made of 1 250W and 5A standard resistor, the resistor R03 is made of 1 500W and 5A standard resistor, the resistor R04 is made of 1 375W and 5A standard resistor, the resistor R05 is formed by connecting 4 312W and 1.25A standard resistors in parallel, the resistor R06 is formed by connecting a 50 omega resistor and a 40 omega resistor in series, and the 40 omega resistor is formed by connecting 2 500W and 2.5A standard resistors in parallel;
the resistor R001 is made of 25W and 1A resistors, the resistor R002 is made of 50W and 1A resistors, the resistor R003 is made of 1 75W and 1A resistors, the resistor R004 is made of 1 100W and 1A resistors, the resistor R005 is made of 1 250W and 1A resistors, and the resistor R006 is made of 1 450W and 1A resistors;
the resistor R101 is made of 1 12.5W and 0.5A resistor, the resistor R102 is made of 125W and 0.5A resistor, the resistor R103 is made of 1 37.5W and 0.5A resistor, the resistor R104 is made of 1 50W and 0.5A resistor, the resistor R105 is made of 1 125W and 0.5A resistor, and the resistor R106 is made of 1 225W and 0.5A resistor;
the resistor R201 is made of 2.5W and 0.1A resistors, the resistor R202 is made of 5W and 0.1A resistors, the resistor R203 is made of 1 7.5W and 0.1A resistors, the resistor R204 is made of 1 10W and 0.1A resistors, the resistor R205 is made of 125W and 0.1A resistors, and the resistor R206 is made of 1 45W and 0.1A resistors;
each load module is controlled by the single chip microcomputer to receive control commands, so that different resistor loads are controlled, and the load tests of the direct-current charger in constant-current and constant-voltage modes can be realized through different switching of the resistor arrays.
2. The dc charger power test load according to claim 1, wherein: the resistors R1-R6 are all power resistors, the resistance value of the resistor R1 is 2.5 omega, the resistance value of the resistor R2 is 5 omega, the resistance value of the resistor R3 is 7.5 omega, the resistance value of the resistor R4 is 10 omega, the resistance value of the resistor R5 is 25 omega, and the resistance value of the resistor R6 is 45 omega.
3. The dc charger power test load according to claim 1, wherein: the resistors R01-R06 are all power resistors, the resistance value of the resistor R01 is 5 omega, the resistance value of the resistor R02 is 10 omega, the resistance value of the resistor R03 is 20 omega, the resistance value of the resistor R04 is 15 omega, the resistance value of the resistor R05 is 50 omega, and the resistance value of the resistor R06 is 90 omega.
4. The dc charger power test load according to claim 1, wherein: the resistors R001-R006 are all power resistors, the resistance value of the resistor R001 is 25 omega, the resistance value of the resistor R002 is 50 omega, the resistance value of the resistor R003 is 75 omega, the resistance value of the resistor R004 is 100 omega, the resistance value of the resistor R005 is 250 omega, and the resistance value of the resistor R006 is 450 omega.
5. The dc charger power test load according to claim 1, wherein: the resistors R101 to R106 are all power resistors, the resistance value of the resistor R101 is 50 Ω, the resistance value of the resistor R102 is 100 Ω, the resistance value of the resistor R103 is 150 Ω, the resistance value of the resistor R104 is 200 Ω, the resistance value of the resistor R105 is 500 Ω, and the resistance value of the resistor R106 is 900 Ω.
6. The dc charger power test load according to claim 5, characterized in that: the resistors R201 to R206 are all power resistors, the resistance value of the resistor R201 is 250 Ω, the resistance value of the resistor R202 is 500 Ω, the resistance value of the resistor R203 is 750 Ω, the resistance value of the resistor R204 is 1000 Ω, the resistance value of the resistor R205 is 2500 Ω, and the resistance value of the resistor R206 is 4500 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711073402.4A CN107942159B (en) | 2017-11-03 | 2017-11-03 | Power test load of direct current charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711073402.4A CN107942159B (en) | 2017-11-03 | 2017-11-03 | Power test load of direct current charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107942159A CN107942159A (en) | 2018-04-20 |
| CN107942159B true CN107942159B (en) | 2020-07-03 |
Family
ID=61933306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711073402.4A Active CN107942159B (en) | 2017-11-03 | 2017-11-03 | Power test load of direct current charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107942159B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645490B (en) * | 2020-06-11 | 2022-05-24 | 江苏罗思韦尔电气有限公司 | Automobile air conditioner temperature controller and fault repairing method thereof |
| CN115840123B (en) * | 2023-03-01 | 2023-05-09 | 佛山市联动科技股份有限公司 | Transistor parameter testing device and testing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202433458U (en) * | 2012-01-16 | 2012-09-12 | 陕西公众智能科技有限公司 | Charger testing device for providing accurate loads |
| CN102981421A (en) * | 2012-11-19 | 2013-03-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Control method for direct-current (DC) load and device thereof |
| CN104237788A (en) * | 2014-10-10 | 2014-12-24 | 南车株洲电机有限公司 | High-speed permanent magnet traction motor temperature rise testing method and resistor cabinet |
| CN104459393A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Large-capacity adjustable simulation RLC test load |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN105676025A (en) * | 2016-01-05 | 2016-06-15 | 天津大学 | Detection artificial load for movable electric vehicle charger |
| CN106324528A (en) * | 2015-06-16 | 2017-01-11 | 群光电能科技股份有限公司 | Variable load module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561469A (en) * | 2008-04-18 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Charger load simulator |
-
2017
- 2017-11-03 CN CN201711073402.4A patent/CN107942159B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202433458U (en) * | 2012-01-16 | 2012-09-12 | 陕西公众智能科技有限公司 | Charger testing device for providing accurate loads |
| CN102981421A (en) * | 2012-11-19 | 2013-03-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Control method for direct-current (DC) load and device thereof |
| CN104237788A (en) * | 2014-10-10 | 2014-12-24 | 南车株洲电机有限公司 | High-speed permanent magnet traction motor temperature rise testing method and resistor cabinet |
| CN104459393A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Large-capacity adjustable simulation RLC test load |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN106324528A (en) * | 2015-06-16 | 2017-01-11 | 群光电能科技股份有限公司 | Variable load module |
| CN105676025A (en) * | 2016-01-05 | 2016-06-15 | 天津大学 | Detection artificial load for movable electric vehicle charger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107942159A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107942159B (en) | Power test load of direct current charger | |
| CN204361736U (en) | Electric vehicle DC charging pile | |
| TWI552473B (en) | Parallel system of DC power supply and its control method | |
| CN102622037B (en) | Parallel PFC (Power Factor Correction) rectifying modules and current sharing control method | |
| CN105406710A (en) | Integrated servo drive system of multi-axis mobile robot | |
| CN205335935U (en) | Adapt to distributed charging system's electric vehicle charger module and machine that charges | |
| CN105458323B (en) | A kind of improved high-efficiency automation hole-drilling system | |
| CN107968394B (en) | System construction method for master-slave spacecraft grid-connected power supply | |
| CN102545899B (en) | Current equalization control method for analog power module and digital power module hybrid plug power system | |
| CN103631177B (en) | The control method of the asynchronous parallel digital control system of direct supply | |
| CN105301519A (en) | Detachable and replaceable constant-current constant-voltage isolation electric energy feedback power aging device | |
| CN202535268U (en) | Parallel connection running device of switch power supply | |
| CN205105134U (en) | Multi-controller system and electric control system used for same | |
| CN108306353A (en) | A kind of digital current-sharing system and method for improvement type multiple module paralleling | |
| CN111246667B (en) | Modular production line | |
| CN203433323U (en) | Direct-current power supply asynchronous parallel digital control system | |
| CN203595958U (en) | N+1 redundant power source load balancing circuit based on CPCI interface | |
| CN209327543U (en) | A kind of high power DC electronic load | |
| CN204759082U (en) | Network power control module | |
| CN205489521U (en) | Power current -sharing control ware that connects in parallel based on STM8 | |
| CN205176722U (en) | Photovoltaic power optimizer and photovoltaic power generation system | |
| CN207833374U (en) | A kind of 12 tunnel combined integratedization voltage adjusters | |
| CN103978281A (en) | Welding equipment with multiple load output modes | |
| CN211405604U (en) | Electric energy router based on power electronic transformer | |
| CN204316430U (en) | A kind of control integrated machine for reverse conversion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |