Aging test device for DCDC conversion board

Abstract

The utility model discloses an aging test device for a DCDC converter board, which comprises an aging room, a plurality of aging jigs are arranged in the aging room, each aging jig is provided with a quick connection terminal and a quick connection copper clamp, and the DCDC converter board is connected between the quick connection terminal and the quick connection copper clamp. One end of the quick connection terminal is electrically connected with a high-voltage direct-current air switch, an aging acquisition control board is further installed on the aging jig and connected with the DCDC conversion board through an FPC, an electric heating device and a multi-channel temperature sensor are installed in the aging room, and the aging room is connected with the high-voltage direct-current air switch through mutual cooperation of the electric heating device and the multi-channel temperature sensor. And the temperature in the burn-in room can be accurately controlled in a range of + / -3 DEG C of a set value. According to the utility model, a plurality of DCDC conversion boards can be tested at the same time, so that the testing efficiency of the DCDC conversion boards can be greatly improved, and in addition, different use scenes of the DCDC conversion boards in practice can be simulated, so that the testing accuracy of the DCDC conversion boards can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of DCDC component testing, and in particular relates to an aging testing device for a DCDC conversion board. Background Art

[0002] With the continuous growth in demand for new energy vehicles, different electronic components and systems in new energy vehicles often require different voltage levels to work properly. DCDC converter boards are widely used in new energy vehicles due to their high conversion efficiency, which can more effectively manage and utilize electrical energy, as well as meet the needs of system integration and intelligent control.

[0003] A DC-DC converter board, also known as a DC-DC converter, is a device that converts electrical energy from one voltage level to another in a DC circuit. It's also known as a DC-DC converter. Its core function is to convert DC input power into AC power using a self-oscillating circuit, and then convert it back to DC output after changing the voltage using a transformer. Furthermore, it can convert AC power into high-voltage DC output using a voltage-doubling rectifier circuit. Therefore, the DC-DC converter board plays a key role in power management, and its performance significantly impacts system stability and efficiency.

[0004] To ensure the performance and reliability of DCDC converter boards, testing them is crucial. However, traditional DCDC converter board aging test equipment has low test efficiency, making it difficult to meet the needs of large-scale production. Furthermore, it cannot simulate the operating conditions of DCDC converter boards in various environments, resulting in one-sided testing of DCDC converter boards.

[0005] Therefore, in view of the above technical problems, it is necessary to provide an aging test device for a DCDC converter board.

[0006] 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

[0007] The purpose of the utility model is to provide an aging test device for a DCDC conversion board, which can solve the problems existing in the aging test device for a DCDC conversion board.

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0009] A aging test device for a DC-DC converter board includes a aging room. Several aging fixtures are provided in the aging room. Each aging fixture is equipped with a quick-connect terminal and a quick-connect copper clip. A DC-DC converter board is connected between the quick-connect terminal and the quick-connect copper clip. One end of the quick-connect terminal is electrically connected to a high-voltage DC circuit breaker. An aging acquisition control board is also installed on the aging fixture. The aging acquisition control board is connected to the DC-DC converter board via an FPC.

[0010] In one or more embodiments of the present invention, an electric heating device and a multi-channel temperature sensor are installed in the aging room. Through the cooperation of the electric heating device and the multi-channel temperature sensor, the temperature in the aging room can be accurately controlled within the range of ±3°C of the set value, so as to simulate the high temperature and constant temperature working environment of the DCDC conversion board at the vehicle end.

[0011] In one or more embodiments of the present invention, the number of the aging fixtures is greater than 10. Preferably, the number of the aging fixtures is 16, which can realize synchronous testing of multiple DCDC converter boards, thereby greatly improving the testing efficiency of the DCDC converter boards.

[0012] In one or more embodiments of the present invention, a water cooler is provided outside the burn-in room, and the output end of the water cooler is connected to the DCDC converter board. The water cooler integrates a heating and heat dissipation system to quickly stabilize the cooling water temperature within the range of ±2°C of the set value. The water cooler has an embedded high-flow water pump and flow meter, so that the cooling water flow rate can be controlled between 8 and 16 L / min, so as to simulate the working environment of the cooling system of the DCDC converter board on the vehicle side.

[0013] In one or more embodiments of the present invention, a power supply is provided outside the aging room, the power supply is electrically connected to the aging acquisition control board, and the power supply is used to supply power to the aging acquisition control board.

[0014] In one or more embodiments of the present invention, the rated voltage of the power supply is 12V.

[0015] In one or more embodiments of the present invention, the aging test device further includes a host computer, which is connected to the plurality of aging acquisition control boards via a CAN bus. The host computer can monitor and evaluate various parameters of the plurality of DCDC conversion boards and generate a test report after the DCDC conversion board test is completed.

[0016] In one or more embodiments of the present invention, several high-voltage power supplies and several low-voltage bidirectional power supplies are further provided outside the aging room. The high-voltage power supplies and the low-voltage bidirectional power supplies are connected to the host computer through the CAN bus, so that the high-voltage power supplies and the low-voltage bidirectional power supplies can be controlled by the host computer and support remote setting of the output voltage, current value and working mode; when the low-voltage bidirectional power supply is configured in reverse mode, the low-voltage bidirectional power supply can convert direct current into alternating current and send it back to the AC power grid, effectively reducing energy consumption.

[0017] In one or more embodiments of the present invention, one end of the high-voltage power supply is electrically connected to the high-voltage DC circuit breaker, and the high-voltage power supply is used to simulate the working environment of the vehicle under the conditions of high-voltage battery power supply or external power supply;

[0018] One end of the low-voltage bidirectional power supply is connected to the quick-connect copper clip, and the low-voltage bidirectional power supply is used to simulate the working state of the vehicle at the low-voltage load end.

[0019] In one or more embodiments of the present invention, an MCU is installed on the aging acquisition control board, which can monitor the analog and digital signals of the DCDC conversion board and realize real-time communication with the host computer through the CAN bus;

[0020] The aging acquisition control board is also connected to an ADC converter, a PWM pulse width modulator, and a CAN bus transceiver. The aging acquisition control board can stably acquire analog signals from the DCDC conversion board in a high-temperature environment and output a PWM signal with a specific duty cycle to control the output voltage and current according to the set value of the host computer. High and low level outputs can also be set through GPIO. The CAN bus transceiver is used to ensure data acquisition and control information communication with the host computer via the CAN bus.

[0021] Compared with the prior art, the aging test device for a DCDC converter board of the present invention can test multiple DCDC converter boards at the same time, thereby greatly improving the test efficiency of the DCDC converter boards. In addition, it can also simulate different usage scenarios of the DCDC converter boards in practice to ensure the accuracy of the DCDC converter board test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of an aging test device for a DCDC converter board in one embodiment of the present invention;

[0024] Figure 2 This is a system function diagram of an aging test device for a DCDC converter board in one embodiment of the present invention. 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 be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] like Figures 1 to 2 As shown, an aging test device for a DCDC converter board in one embodiment of the present invention includes an aging room, a water cooler, a high-voltage power supply, a low-voltage bidirectional power supply, an aging acquisition control board and a host computer.

[0027] Among them, the aging room is equipped with several aging fixtures, which are used to install DCDC converter boards so as to perform aging tests on the DCDC converter boards.

[0028] In addition, each aging fixture is equipped with quick-connect terminals and quick-connect copper clips. A DCDC conversion board is connected between the quick-connect terminals and the quick-connect copper clips. When the DCDC conversion board needs to be tested, just install the DCDC conversion board between the quick-connect terminals and the quick-connect copper clips.

[0029] Specifically, one end of the quick-connect terminal is electrically connected to a high-voltage DC circuit breaker to ensure the safety of the burn-in fixture. The burn-in fixture is also equipped with an aging acquisition control board, which is connected to the DCDC conversion board via an FPC.

[0030] like Figures 1 to 2 As shown, the aging acquisition control board is equipped with an MCU, which can monitor the analog and digital signals of the DCDC conversion board and realize real-time communication with the host computer through the CAN bus.

[0031] Among them, the aging acquisition control board is also connected to an ADC converter, a PWM pulse width modulator and a CAN bus transceiver. The aging acquisition control board can stably acquire the analog signal of the DCDC conversion board in a high-temperature environment, and output a PWM signal with a specific duty cycle according to the set value of the host computer to control the output voltage and current; the high and low level outputs can also be set through GPI0. The CAN bus transceiver is used to ensure that data acquisition and control information are communicated with the host computer through the CAN bus. In addition, the aging acquisition control board works through the CAN bus communication mode, which greatly simplifies the wiring complexity and enhances the reliability of the aging test device.

[0032] In addition, the aging room is equipped with electric heating equipment and multi-channel temperature sensors. Through the cooperation of the electric heating equipment and the multi-channel temperature sensors, the temperature in the aging room can be accurately controlled within the range of ±3°C of the set value, so as to simulate the high-temperature and constant-temperature working environment of the DCDC conversion board on the vehicle side.

[0033] Optionally, the number of aging fixtures is greater than 10.

[0034] Preferably, the number of aging fixtures is 16, which can realize the synchronous testing of multiple DCDC converter boards, thereby greatly improving the testing efficiency of the DCDC converter boards.

[0035] like Figures 1 to 2 As shown, a water chiller is installed outside the burn-in chamber, with its output connected to the DC-DC converter board. The chiller's integrated heating and cooling system allows for rapid stabilization of the cooling water temperature within a ±2°C range of the setpoint. A high-flow pump and flow meter are built into the chiller, enabling controlled cooling water flow rates between 8 and 16 L / min to simulate the cooling system operating environment of the DC-DC converter board on the vehicle.

[0036] Among them, a power supply is provided outside the aging room, the power supply is electrically connected to the aging collection control board, and the power supply is used to supply power to the aging collection control board.

[0037] In addition, the rated voltage of the power supply is 12V.

[0038] Specifically, the aging test device also includes a host computer, which is connected to several aging acquisition control boards via a CAN bus. The host computer can monitor and evaluate various parameters of several DCDC conversion boards and generate a test report after the DCDC conversion board test is completed.

[0039] like Figures 1 to 2As shown, several high-voltage power supplies and low-voltage bidirectional power supplies are installed outside the burn-in room. These are connected to a host computer via the CAN bus, enabling them to be controlled by the host computer and supporting remote setting of output voltage, current, and operating mode. When the low-voltage bidirectional power supply is configured in reverse mode, it converts DC power into AC power and returns it to the AC grid, effectively reducing energy consumption.

[0040] Among them, one end of the high-voltage power supply is electrically connected to the high-voltage DC circuit breaker, and the high-voltage power supply is used to simulate the working environment of the vehicle under high-voltage battery power supply or external power supply conditions.

[0041] In addition, one end of the low-voltage bidirectional power supply is connected to the quick-connect copper clip, and the low-voltage bidirectional power supply is used to simulate the working state of the vehicle at the low-voltage load end.

[0042] 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.

[0043] 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 DCDC converter board aging test device, characterized in that: The aging room comprises a plurality of aging fixtures, each of which is equipped with a quick-connect terminal and a quick-connect copper clip, and a DCDC conversion board is connected between the quick-connect terminal and the quick-connect copper clip; The aging room is equipped with electric heating equipment and multi-channel temperature sensors to maintain the temperature of the aging room within the set value ±3°C; One end of the quick connection terminal is electrically connected to a high-voltage DC circuit breaker. An aging acquisition control board is also installed on the aging fixture. The aging acquisition control board is connected to the DCDC conversion board through an FPC. The aging acquisition control board is installed with an MCU, an ADC converter, a PWM pulse width modulator, and a CAN bus transceiver. The aging room is equipped with: A water cooler, the output end of which is connected to the DCDC conversion board, and the cooling water temperature is controlled within ±2°C; A power supply electrically connected to the aging acquisition control board; A host computer, the host computer is connected to the plurality of aging acquisition control boards via a CAN bus; Several high-voltage power supplies and several low-voltage bidirectional power supplies are connected to the host computer through the CAN bus. One end of the high-voltage power supply is electrically connected to the high-voltage DC circuit breaker, and one end of the low-voltage bidirectional power supply is connected to the quick-connect copper clip.

2. The aging test device for a DCDC converter board according to claim 1, characterized in that: The number of the aging fixtures is greater than 10.

3. The aging test device for a DCDC converter board according to claim 1, characterized in that: The rated voltage of the power supply is 12V.

4. The aging test device for a DCDC converter board according to claim 1, characterized in that: The high-voltage power supply is used to simulate the working environment of the vehicle under high-voltage battery power supply or external power supply conditions, and the low-voltage bidirectional power supply is used to simulate the working state of the vehicle at the low-voltage load end.

5. The aging test device for a DCDC converter board according to claim 1, characterized in that: The aging acquisition control board can stably acquire the analog signal of the DCDC conversion board in a high-temperature environment, and output a PWM signal with a specific duty cycle to control the output voltage and current according to the set value of the host computer. The CAN bus transceiver is used to ensure data acquisition and control information communication with the host computer via the CAN bus.

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