Power test system

Abstract

The utility model discloses a power test system, which comprises a battery simulator, a motor controller, a power analyzer, a conversion unit, a motor and an upper computer unit, wherein the battery simulator is provided; the motor controller is connected with the battery simulator; the power analyzer is respectively connected with the battery simulator and the motor controller to generate a Modbus-TCP signal; the conversion unit is connected with the power analyzer and is used for generating a CAN signal according to the Modbus-TCP signal; the motor is connected with the motor controller; and the upper computer unit is respectively connected with the conversion unit, the battery simulator and the motor controller. According to the power test system provided by the utility model, the Modbus-TCP signal of the power analyzer can be converted into the CAN signal through the conversion unit, so that the upper computer unit adopting CAN communication can read current, voltage, power and other data acquired and processed by the power analyzer, and further analyze and process the data; the use flexibility of the equipment is improved, and the test efficiency is also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile testing, and in particular relates to a power testing system. Background Art

[0002] In the automotive field, especially in new energy vehicle motor testing, power analyzers are widely used. Power analyzers are mainly used to analyze and collect data such as current, voltage, and power of new energy vehicle motors.

[0003] Existing power analyzers usually support Modbus-TCP communication but not CAN communication, but the host computer unit usually supports CAN communication but not Modbus-TCP communication. Therefore, the host computer unit cannot directly read the data collected and analyzed by the power analysis equipment, and thus cannot process, read and record the data.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a power testing system, which can solve the technical problem of mismatched communication between a power analyzer and a control unit in the prior art.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a power testing system, including a battery simulator, a motor controller, a power analyzer, a conversion unit, a motor and a host computer unit; wherein,

[0007] The battery simulator is configured to generate a first voltage;

[0008] The motor controller is connected to the battery simulator and is configured to generate a second voltage based on the first voltage;

[0009] The power analyzer is connected to the battery simulator and the motor controller respectively, and is used to collect voltage and current data and perform power analysis, and generate a Modbus-TCP signal;

[0010] The conversion unit is connected to the power analyzer and is used to generate a CAN signal according to the Modbus-TCP signal;

[0011] The motor is connected to a motor controller;

[0012] The host computer unit is connected to the conversion unit, the battery simulator and the motor controller respectively, and is used to read and analyze the CAN signal and control the operating status of the battery simulator and the motor controller.

[0013] In one or more embodiments of the present invention, the conversion unit includes a plurality of first CAN interfaces, the host computer unit includes a plurality of second CAN interfaces, and the first CAN interfaces and the second CAN interfaces are communicatively connected.

[0014] In one or more embodiments of the present invention, the first CAN interface and the second CAN interface are connected via a CAN line.

[0015] In one or more embodiments of the present invention, the conversion unit includes a first CAN interface, and the host computer unit includes a second CAN interface.

[0016] In one or more embodiments of the present invention, the power analyzer includes a first Ethernet interface, the conversion unit includes a second Ethernet interface, and the first Ethernet interface and the second Ethernet interface are communicatively connected.

[0017] In one or more embodiments of the present invention, the first Ethernet interface and the second Ethernet interface are connected via an RJ45 network cable.

[0018] In one or more embodiments of the present invention, the first voltage is a DC voltage, and the second voltage is a three-phase AC voltage.

[0019] In one or more embodiments of the present invention, the battery simulator is connected to the motor controller via a DC bus, and the motor controller is connected to the motor via a three-phase AC line.

[0020] In one or more embodiments of the present invention, the power analyzer includes several current sensors and several voltage sensors.

[0021] In one or more embodiments of the present invention, the current sensor is connected to the DC bus and the three-phase AC line respectively, and the voltage sensor is connected to the DC bus and the three-phase AC line respectively.

[0022] Compared with the existing technology, the power testing system in the present invention can convert the Modbus-TCP signal of the power analyzer into a CAN signal through a conversion unit, so that the host computer unit using CAN communication can read the current, voltage, power and other data collected and processed by the power analyzer and then perform data analysis and processing, which not only improves the flexibility of equipment use but also improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0024] Figure 1 It is a structural diagram of a power testing system in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "up", "down", "front", "back", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] As described in the background technology, the existing host computer unit 50 does not support Modbus TCP communication, but only supports CAN communication. However, the power analyzer 30 does not support CAN communication, but only supports Modbus TCP communication. Therefore, the host computer unit 50 cannot directly read the simulation parameters collected and processed by the power analyzer 30.

[0028] In response to the above issues, Figure 1 As shown, the power test system in a specific embodiment of the present invention includes a battery simulator 10, a motor controller 20, a power analyzer 30, a conversion unit 40, a motor 60 and a host computer unit 50; wherein,

[0029] A battery simulator 10, configured to generate a first voltage;

[0030] The motor controller 20 is connected to the battery simulator 10 and is configured to generate a second voltage according to the first voltage;

[0031] The power analyzer 30 is connected to the battery simulator 10 and the motor controller 20 respectively, and is used to collect voltage and current data and perform power analysis, and generate Modbus-TCP signals;

[0032] The conversion unit 40 is connected to the power analyzer 30 and is used to generate a CAN signal according to the Modbus-TCP signal;

[0033] The motor 60 is connected to the motor controller 20;

[0034] The host computer unit 50 is connected to the conversion unit 40 , the battery simulator 10 and the motor controller 20 respectively, and is used to read and analyze the CAN signal and control the operating status of the battery simulator 10 and the motor controller 20 .

[0035] In this embodiment, when the test starts, the host computer unit 50 is connected to the battery simulator 10 and the motor controller 20 respectively through a communication connection to control the battery simulator 10 to output a first voltage to the motor controller 20, and the motor controller 20 inverts the first voltage into a second voltage through its own inverter; according to the control signal of the host computer unit 50, the motor controller 20 controls the motor 60 to operate at a predetermined speed or torque, and the power analyzer 30 is connected to the output end of the battery simulator 10 and the output end of the motor controller 20 respectively, collects the first voltage and the second voltage and the corresponding current for data processing, generates a Modbus-TCP signal and sends it to the conversion unit 40, and the conversion unit 40 converts the Modbus-TCP signal into a CAN signal for the host computer unit 50 to process, read and record the data.

[0036] Specifically, the conversion unit 40 includes a plurality of first CAN interfaces 402 , the host computer unit 50 includes a plurality of second CAN interfaces 501 , and the first CAN interfaces 402 and the second CAN interfaces 501 are communicatively connected.

[0037] In this embodiment, the conversion unit 40 includes a first CAN interface 402 , and the host computer unit 50 includes a second CAN interface 501 . The first CAN interface 402 and the second CAN interface 501 are connected via a CAN line 70 .

[0038] In this embodiment, the conversion unit 40 transmits the CAN signal to the host computer unit 50 through the first CAN interface 402, the CAN line 70 and the second CAN interface 501, and converts the received Modbus-TCP signal into a CAN signal for transmission to the host computer unit 50 through the PLC programmer in the conversion unit 40; wherein, the conversion unit 40 is a programmable intelligent gateway, and its model is GCAN-GT410.

[0039] Specifically, the power analyzer 30 includes a first Ethernet interface 301 , and the conversion unit 40 includes a second Ethernet interface 401 . The first Ethernet interface 301 and the second Ethernet interface 401 are communicatively connected to each other via an RJ45 network cable 80 .

[0040] In this embodiment, the power analyzer 30 transmits the Modbus-TCP signal to the first Ethernet interface 301 through the first Ethernet interface 301 and the RJ45 network cable 80, and then the conversion unit 40 generates a CAN signal according to the Modbus-TCP signal; wherein the model of the power analyzer 30 is WT5000.

[0041] Specifically, the first voltage is a DC voltage, the second voltage is a three-phase AC voltage, the battery simulator 10 is connected to the motor controller 20 via a DC bus 100 , and the motor controller 20 is connected to the motor 60 via a three-phase AC line 90 .

[0042] In this embodiment, the battery simulator 10 outputs a DC voltage according to the control signal of the host computer unit 50, and the DC voltage flows into the motor controller 20 through the DC bus 100. The motor controller 20 inverts the DC voltage to generate a three-phase AC voltage. According to the control signal of the host computer unit 50, the motor controller 20 transmits the three-phase AC voltage to the motor 60 to control the motor 60 to operate according to a preset torque or speed. In this embodiment; wherein, the model of the battery simulator 10 is MD880-DCP-0600-7C-BS.

[0043] Specifically, the power analyzer 30 includes several current sensors and several voltage sensors. The current sensors are connected to the DC bus 100 and the three-phase AC line 90 respectively. The voltage sensors are connected to the DC bus 100 and the three-phase AC line 90 respectively.

[0044] In this embodiment, five groups of current sensors and voltage sensors are provided, corresponding to the two wires of the DC bus 100 and the three wires of the three-phase AC line 90. The power analyzer 30 is connected to the DC bus 100 and the three-phase AC line 90 to collect analog signals such as DC current, three-phase AC current, and corresponding voltages, and perform data processing and power analysis, and generate Modbus-TCP signals based on these signals.

[0045] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0046] The power test system in the present invention utilizes a conversion unit 40 to convert the Modbus-TCP signal of the power analyzer 30 into a CAN signal, so that the host computer unit 50 using CAN communication can read the current, voltage, power and other data collected and processed by the power analyzer 30 and then perform data analysis and processing, thereby improving the flexibility of equipment use and the efficiency of test.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A power test system, characterized in that: It includes a battery simulator, a motor controller, a power analyzer, a conversion unit, a motor and a host computer unit; among them, The battery simulator is configured to generate a first voltage; The motor controller is connected to the battery simulator and is configured to generate a second voltage based on the first voltage; The power analyzer is connected to the battery simulator and the motor controller respectively, and is used to collect voltage and current data and perform power analysis, and generate a Modbus-TCP signal; The conversion unit is connected to the power analyzer and is used to generate a CAN signal according to the Modbus-TCP signal; The motor is connected to a motor controller; The host computer unit is connected to the conversion unit, the battery simulator and the motor controller respectively, and is used to read and analyze the CAN signal and control the operating status of the battery simulator and the motor controller.

2. The power testing system according to claim 1, wherein: The conversion unit includes a plurality of first CAN interfaces, the host computer unit includes a plurality of second CAN interfaces, and the first CAN interfaces are communicatively connected with the second CAN interfaces.

3. The power testing system according to claim 2, wherein: The first CAN interface and the second CAN interface are connected via a CAN line.

4. The power testing system according to claim 2, wherein: The conversion unit includes a first CAN interface, and the host computer unit includes a second CAN interface.

5. The power testing system according to claim 1, wherein: The power analyzer includes a first Ethernet interface, the conversion unit includes a second Ethernet interface, and the first Ethernet interface and the second Ethernet interface are communicatively connected.

6. The power testing system according to claim 5, characterized in that: The first Ethernet interface and the second Ethernet interface are connected via an RJ45 network cable.

7. The power testing system according to claim 1, wherein: The first voltage is a direct current voltage, and the second voltage is a three-phase alternating current voltage.

8. The power testing system according to claim 7, characterized in that: The battery simulator is connected to the motor controller via a DC bus, and the motor controller is connected to the motor via a three-phase AC line.

9. The power testing system according to claim 7, characterized in that: The power analyzer includes several current sensors and several voltage sensors.

10. The power testing system according to claim 9, characterized in that: The current sensor is connected to the DC bus and the three-phase AC line respectively, and the voltage sensor is connected to the DC bus and the three-phase AC line respectively.

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