Aging test system of power conversion module

Abstract

The utility model discloses an aging test system of a power conversion module, which is applied to the technical field of power conversion testing and comprises an air inlet device, a first air exhaust device, a first turbulent flow device, a heating device and a first temperature sensor which are arranged in an aging room. A plurality of to-be-tested power conversion modules are placed in the burn-in room, and the plurality of to-be-tested power conversion modules are electrically connected with load equipment in the load room so as to supply power to the load equipment; the controller is respectively connected with the air inlet device, the first air exhaust device, the heating device and the first temperature sensor, and is used for keeping the constant temperature in the aging room during the aging test by controlling the working states of the air inlet device, the first air exhaust device and the heating device; and a plurality of loads arranged in the load room. According to the scheme of the invention, multiple to-be-tested power conversion modules are supported to carry out aging test at full power, batch test is facilitated, and the service life of load equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of power conversion testing, in particular to an aging testing system for a power conversion module. Background Art

[0002] At present, after the power conversion module is produced, in order to improve reliability and eliminate device stress, an aging test will be performed on the power conversion module. An ideal aging test would require the power conversion module to run at full power for a certain period of time, such as running at full power for 8 hours. However, in many current occasions, the power conversion module fails to meet the full power requirement, which reduces the accuracy of the test and increases the probability of missed detection of defective products. For example, in some current solutions, when the power conversion module is actually running under load, the air outlet temperature will reach more than 70 degrees. The exhaust fan designed at the air outlet will blow the hot air straight out to the partition, and the hot air will be bounced back by the smooth partition, resulting in a very high temperature at the air outlet of the power conversion module. The power conversion module can only be operated at a lower power to achieve testing.

[0003] At present, there is also a solution that uses a thermostat or a thermostat cabinet to perform an aging test on the power conversion module. Although constant temperature control can be achieved during the aging test, only a small number of low-power power conversion modules can be tested at a time, which is not suitable for situations where large-scale aging tests are required. In addition, if a power conversion module fails during the test and needs to be removed, the internal temperature will be out of control after the thermostat / thermostat cabinet is opened, which will cause the multiple power conversion modules in the entire thermostat / thermostat cabinet to terminate the aging test. In other words, this solution makes it impossible to remove the faulty power conversion module at any time during the aging test.

[0004] In addition, in the current solution, when performing an aging test on the power conversion module, the load is connected next to the power conversion module, which means that the load will also age together. This long-term high temperature environment will result in a shortened load life.

[0005] In summary, how to effectively implement aging testing of power conversion modules so that the power conversion modules can meet full power testing requirements, facilitate batch testing, and ensure load life is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide an aging test system for a power conversion module to effectively implement the aging test of the power conversion module, so that the power conversion module can meet the full power test requirements, facilitate batch testing, and ensure the load life.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] In a first aspect, the utility model provides an aging test system for a power conversion module, comprising:

[0009] An air inlet device is arranged in the aging room and is used to supply air into the aging room, a first air exhaust device is used to exhaust air outside the aging room, a first flow disturbing device is used to disturb the airflow in the aging room, a heating device is used to generate heat when starting, and a first temperature sensor is used to monitor the temperature in the aging room and feed back to the controller;

[0010] The load equipment is arranged in the load room;

[0011] A plurality of power conversion modules to be tested are placed in the aging room, and the plurality of power conversion modules to be tested are electrically connected to the load equipment in the load room to supply power to the load equipment;

[0012] The controller, which is respectively connected to the air inlet device, the first air exhaust device, the heating device and the first temperature sensor, is used to control the working states of the air inlet device, the first air exhaust device and the heating device so as to maintain a constant temperature in the aging room during the aging test.

[0013] In one embodiment, it further includes:

[0014] A plurality of aging racks arranged in the aging room and used for placing a plurality of the power conversion modules to be tested;

[0015] Each of the aging racks is a multi-layer structure and each layer is provided with a cooling fan. When a power conversion module to be tested is placed on any layer of any aging rack, the power conversion module to be tested is limited by the bakelite guide rail of the layer and is electrically connected to the terminal seat of the layer.

[0016] In one embodiment, the air inlet device is arranged at a lower position on the side of the aging room, the first spoiler device is arranged at an upper position on the side of the aging room, the first exhaust device is arranged on the top of the aging room, and the heating device is arranged at a lower position on the side of the aging room and is arranged along the air supply line of the air inlet device.

[0017] In one embodiment, the aging room includes a pipe body for structural support and an insulation board for heat preservation.

[0018] In one embodiment, it further includes:

[0019] An air inlet louver is arranged on the side of the load room and is used to supply air into the load room, and the air inlet louver is in a fully open state by default;

[0020] A second exhaust device disposed in the load room and used for exhausting air to the outside of the load room;

[0021] A second flow disturbing device is arranged in the load room and is used to disturb the airflow in the load room.

[0022] In one embodiment, it further includes:

[0023] A first smoke sensor disposed in the aging room and used for performing smoke detection in the aging room;

[0024] a second smoke sensor disposed in the load room and used for detecting smoke in the load room;

[0025] A second temperature sensor disposed in the load room, for monitoring the temperature in the load room and feeding back to the controller;

[0026] The controller is connected to the first smoke sensor, the second smoke sensor, the first temperature sensor and the second temperature sensor respectively, so as to control the alarm to send out an alarm message when any smoke sensor detects smoke and / or any temperature sensor detects abnormal temperature;

[0027] The alarm is connected to the controller and is used to send out alarm information.

[0028] In one embodiment, it further includes:

[0029] a first display device connected to the controller;

[0030] The multiple power conversion modules to be tested placed in the aging room are all connected to the controller so that the working parameters of the multiple power conversion modules to be tested during the aging test are displayed through the first display device.

[0031] In one embodiment, the multiple loads placed in the load room are connected to the controller so that the working parameters of the multiple loads during the aging test are displayed through the first display device.

[0032] In one embodiment, the aging room and the load room are arranged adjacent to each other and connected through a connecting passage, and the connecting passage has an isolation door opened by a door access system, so that the connecting passage between the aging room and the load room remains closed by default.

[0033] In one embodiment, the aging room and the load room are respectively arranged at different locations, and both have heat-insulating fireproof doors to keep the aging room and the load room in a normally closed state.

[0034] By applying the technical solution provided by the embodiment of the utility model, the aging test of the power conversion module is realized based on the aging room and the load room. Since the load device is arranged in the load room, multiple power conversion modules to be tested are placed in the aging room, so that the load device will not be in a high temperature environment during the test process, which is conducive to ensuring the life of the load device. In addition, since there is sufficient space in the aging room, it is convenient to realize large-scale testing. The heating device arranged in the aging room will affect the temperature in the aging room. Usually, the temperature in the aging room can be quickly raised to the required temperature by turning on the heating device at the beginning of the test stage, that is, the setting of the heating device is conducive to improving the test efficiency. The controller can achieve good ventilation balance conditions in the aging room through the air inlet device and the first exhaust device, and maintain it in a constant temperature state. The airflow in the aging room is disturbed by the first spoiler device to make the temperature in the aging room more uniform, so as to avoid the situation where the ambient temperature in the aging room is suitable but the temperature near the power conversion module to be tested is too high. Since the solution of the present application is conducive to achieving uniform and constant temperature in the entire aging room during the aging test, the solution of the present application can support full-power aging operation of multiple power conversion modules to be tested.

[0035] To sum up, the solution of the present application can effectively realize the aging test of multiple power conversion modules to be tested, support aging test of multiple power conversion modules to be tested at full power, and facilitate batch testing, while ensuring the life of the load equipment. In addition, during the aging test process, it supports the removal of faulty power conversion modules to be tested at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a structural schematic diagram of an aging test system for a power conversion module in the utility model;

[0038] Figure 2 It is a structural schematic diagram of an aging test system for a power conversion module in a specific implementation manner of the utility model;

[0039] Figure 3 This is a schematic diagram of an external perspective of an aging room and a load room in a specific implementation manner of the utility model;

[0040] Figure 4 It is a schematic diagram of a top view of an aging room and a load room in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0041] The core of the utility model is to provide an aging test system for a power conversion module, which can effectively realize the aging test of multiple power conversion modules to be tested, support the aging test of multiple power conversion modules to be tested at full power, and is convenient for batch testing, and also guarantees the life of the load equipment. In addition, during the aging test process, it supports the removal of the faulty power conversion module to be tested at any time.

[0042] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0043] Please refer to Figure 1 , Figure 1 The following is a schematic diagram of the structure of an aging test system for a power conversion module in the present invention. The aging test system for the power conversion module may include:

[0044] An air inlet device 101 is arranged in the aging room and is used to supply air into the aging room, a first air exhaust device 102 is used to exhaust air outside the aging room, a first flow disturbing device 103 is used to disturb the airflow in the aging room, a heating device 104 is used to generate heat when starting, and a first temperature sensor 105 is used to monitor the temperature in the aging room and feed back to the controller 301;

[0045] Load equipment 206 arranged in the load room;

[0046] A plurality of power conversion modules to be tested are placed in the aging room, and the plurality of power conversion modules to be tested are electrically connected to the load device 206 in the load room to supply power to the load device 206;

[0047] The controller 301, which is respectively connected to the air inlet device 101, the first air exhaust device 102, the heating device 104 and the first temperature sensor 105, is used to control the working states of the air inlet device 101, the first air exhaust device 102 and the heating device 104 to maintain a constant temperature in the aging room during the aging test.

[0048] In the solution of the present application, an aging room and a load room are provided, and the specific space size of the aging room can be set and adjusted according to actual needs, but it is understandable that in actual applications, batch testing is usually required to improve test efficiency, so the space of the aging room will not be set too small. For example, in an embodiment of the following text, the height of the aging room will be 1.5m higher than the aging rack 107.

[0049] In a specific implementation of the present invention, the aging room may include a pipe body for structural support and a heat preservation board for heat preservation.

[0050] Using the pipe body as the structural support of the aging room can achieve a good supporting effect and is easy to build. Since the aging room needs to maintain a constant temperature when performing aging tests on multiple power conversion modules to be tested in the present application, the insulation board in this embodiment can help maintain temperature stability. For example, in one occasion, the pipe body used for structural support can be a square pipe, and the pipe wall thickness is, for example, 1.5mm or 2mm, and the insulation board can be, for example, a glass magnesium rock wool insulation board with a thickness of not less than 50mm.

[0051] A plurality of power conversion modules to be tested need to be placed in the aging room. The power conversion modules to be tested may specifically be high-power power supply modules, inverters, etc. Figure 1 The power conversion modules 1 to n to be tested are shown, and the power conversion module 1 to be tested is marked as 106. A plurality of power conversion modules to be tested can be connected to a load device 206 in the load room, so that the load device 206 can be powered. It can be understood that the specific type of the load device 206 can be set and adjusted according to actual needs, as long as it can support a plurality of power conversion modules to be tested to operate at full power, for example, it can be various types of electrical devices such as resistors. It can also be understood that in actual applications, since the number of power conversion modules to be tested is usually large, the load device 206 can usually include a plurality of load units, each load unit is placed in a load cabinet, and each load cabinet is connected to a corresponding aging rack 107, so that the plurality of power conversion modules to be tested in the aging rack 107 can power the load units in the corresponding load cabinet in a parallel power supply manner.

[0052] In a specific implementation, in order to effectively utilize the space of the aging room, multiple power conversion modules to be tested can be placed through an aging rack. In a specific implementation of the utility model, refer to Figure 2 , and may also include:

[0053] A plurality of aging racks 107 arranged in the aging room for placing a plurality of power conversion modules to be tested;

[0054] Each aging rack 107 is a multi-layer structure and each layer is provided with a cooling fan 108. When a power conversion module to be tested is placed on any layer of any aging rack, the power conversion module to be tested is limited by the bakelite rail of the layer and electrically connected to the terminal seat of the layer.

[0055] See also Figure 2 , is a structural diagram of an aging test system for a power conversion module in a specific implementation manner of the utility model, Figure 2 In the embodiment of the present invention, an aging rack 107 is shown. The aging rack 107 has a multi-layer structure. Each layer can be used to place a power conversion module to be tested, thereby effectively utilizing the space of the aging room. A plurality of such aging racks 107 can be placed in the aging room as needed to facilitate batch testing of the power conversion modules to be tested. Figure 2 The power conversion module to be tested is marked as 106 .

[0056] In this embodiment, in order to facilitate the installation and heat dissipation of the power conversion module to be tested, bakelite rails are used for limiting. For example, two "L"-shaped bakelite rails can be set at the bottom of each layer of the aging rack to fix the power conversion module to be tested. The bottom surfaces of these two "L"-shaped bakelite rails are smooth and can be easily pushed into the aging rack 107 to play a guiding role. Therefore, after the power conversion module to be tested is pushed to the bottom together with the bakelite rails, it can be electrically connected to the terminal seat of this layer, that is, the power conversion module to be tested can pass through the terminal seat of this layer and finally achieve electrical connection with the corresponding load in the load room. Figure 2 The terminal base is marked as 109. In addition, in actual application, for easy viewing, when the power conversion module to be tested is successfully connected to the terminal base 109 of the layer, the green indicator light of the power conversion module to be tested is always on to remind the staff.

[0057] In addition, in this embodiment, each layer of each aging rack is provided with a cooling fan 108, which can accelerate the heat dissipation of the aging rack 107, that is, accelerate the heat dissipation of the multiple power conversion modules to be tested.

[0058] Similarly, in practical applications, in order to effectively utilize the space of the load room, as described above, the load equipment 206 disposed in the load room may be composed of a plurality of load units and placed in different load cabinets respectively. Figure 2 A load cabinet is shown and marked as 207.

[0059] In practical applications, the number of aging racks 107 and load cabinets 207 can be set and adjusted according to actual needs, for example Figure 4 A schematic diagram of a top view of an aging room and a load room in a specific embodiment of the utility model, Figure 4In the embodiment, a plurality of aging racks 107 and a plurality of load cabinets 207 are provided. Similarly, the number of the air inlet device 101, the first air exhaust device 102, the first spoiler device 103, the heating device 104, the first temperature sensor 105, the air inlet louver 201, the second air exhaust device 202, the second spoiler device 203, the first temperature sensor 105, and the second temperature sensor 205 can be set and adjusted according to actual needs. Figure 4 There are multiple settings in each.

[0060] The aging room is provided with an air inlet device 101, a first air exhaust device 102, a first spoiler device 103, a heating device 104, and a first temperature sensor 105. Under the control of the controller 301, a constant temperature can be maintained in the aging room.

[0061] For example, in one case, after multiple power conversion modules to be tested are placed in the corresponding positions of the aging rack 107, the aging test of the multiple power conversion modules to be tested can be started. For example, in one case, the required temperature is 45°C. It can be understood that during the test, since the multiple power conversion modules to be tested continuously emit heat, the temperature in the aging room will rise rapidly. In order to improve the test efficiency, before the multiple power conversion modules to be tested are powered on, the first exhaust device 102 and the air inlet device 101 can be turned off, and the heating device 104 can be started, so that the temperature in the aging room can rise to the required 45°C more quickly. At the same time, the first spoiler device 103 can be started to make the temperature in the aging room more balanced.

[0062] The specific types of the air inlet device 101, the first air exhaust device 102, the first spoiler device 103, and the heating device 104 in the aging room can be set and adjusted according to temperature requirements. For example, in practical applications, the air inlet device 101 in the aging room can be, for example, an air inlet louver, that is, the air entering from the outside is natural wind, and the first air exhaust device 102 and the second air exhaust device 202 in the embodiments described later can be implemented by, for example, an exhaust fan, and the first spoiler device 103 and the second spoiler device 203 in the embodiments described later can be implemented by, for example, a spoiler fan.

[0063] In the above example, after the temperature in the aging room rises by 45°C, multiple power conversion modules to be tested can be powered on, and in the solution of the present application, multiple power conversion modules to be tested are supported to run at full power, and high-power power conversion modules to be tested are supported. Since multiple power conversion modules to be tested will continuously generate heat after being powered on, the controller 301 can turn off the heating device 104, and for example, half of the air inlet shutters can be opened, and the first exhaust device 102 can be operated at a low speed, so that part of the heat generated by the multiple power conversion modules to be tested can be taken away by the circulation of air, so that the temperature in the aging room is maintained at 45°C. The first spoiler 103 needs to be turned on continuously, so as to make the temperature in the aging room more uniform by disturbing the airflow in the aging room.

[0064] In addition, in actual applications, if it is detected that the temperature in the aging room is too high, for example, in the above example, when the temperature in the aging room is detected to be higher than 50°C, it is considered that the temperature in the aging room is too high. At this time, a cooling operation can be performed, for example, the degree of opening of the air inlet louvers can be increased, such as fully opening the air inlet louvers in the aging room, and increasing the speed of the first exhaust device 102. The specific speed gear can be set as needed so that the temperature can be reduced to 45°C again. When it is reduced to 45°C, the cooling operation can be ended, that is, the air inlet louvers are restored to a half-open state, and the first exhaust device 102 is operated at a low speed again to maintain the temperature around 45°C.

[0065] Similarly, if in actual application, it is detected that the temperature in the aging room is too low, for example, in the above example, when the temperature in the aging room is detected to be lower than 40°C, it is considered that the temperature in the aging room is too low. At this time, the same as the heating operation at the initial startup, the temperature in the aging room can be quickly raised to the required 45°C by closing the first exhaust device 102, closing the air inlet device 101, and starting the heating device 104. When it rises to 45°C, the heating operation can be ended, that is, the air inlet louver is restored to a half-open state, and the first exhaust device 102 is operated at a low speed again to maintain the temperature around 45°C.

[0066] In summary, the controller 301 can sample the room temperature through the first temperature sensor 105, and automatically control the working states of the air inlet device 101, the first exhaust device 102 and the heating device 104, so that during the aging test, the aging room can quickly reach the required temperature and maintain a constant temperature. It can be understood that the control method of the controller 301 is specifically described above through specific examples. In other occasions, there may be other control methods, as long as the aging room can be effectively kept at a constant temperature during the aging test.

[0067] The first temperature sensor 105 is used to sample and monitor the temperature in the aging room, and can be fed back to the controller 301. In practical applications, although the first spoiler 103 makes the temperature in the aging room more uniform, in order to promptly detect the overheating of the power conversion module to be tested, the first temperature sensor 105 is usually set at a place close to the air inlet of the power conversion module to be tested, such as Figure 2 In the case of, the first temperature sensor 105 is specifically arranged on the side of the aging rack 107, and specifically detects the temperature at the air inlet position of the power conversion module to be tested.

[0068] The specific positions of the air inlet device 101, the first spoiler device 103, the first exhaust device 102 and the heating device 104 can be set and adjusted according to actual needs. For example, in a specific embodiment of the present invention, refer to Figure 2 The air inlet device 101 of the aging room can be set at the lower position of the side of the aging room, and the first exhaust device 102 is set at the top of the aging room, so that the external natural wind enters the aging room from the bottom, passes through the aging rack 107, and leaves from the top of the aging room, which can effectively achieve the heat dissipation of the aging rack 107, that is, the heat dissipation of multiple power conversion modules to be tested in the aging rack 107.

[0069] As described above, the heating device 104 is started at the beginning of the test, so the heating device 104 can be set at the lower position of the side of the aging room and along the air supply line of the air inlet device 101, so that when the heating device 104 is started, the heat emitted by the heating device 104 can be quickly dispersed to the entire space along the air supply line, which helps to achieve temperature balance.

[0070] See also Figure 2 The first spoiler 103 can be arranged at the upper position of the side of the aging room to facilitate the air flow disturbance in the aging room.

[0071] In a specific implementation of the present invention, it may also include:

[0072] An air inlet louver 201 is provided on the side of the load room and is used to supply air into the load room, and the air inlet louver 201 is in a fully open state by default;

[0073] A second exhaust device 202 disposed in the load room and used for exhausting air to the outside of the load room;

[0074] A second flow disturbing device 203 is provided in the load room and is used to disturb the airflow in the load room.

[0075] In this implementation, it is considered that there are multiple loads in the load room. When performing aging tests on multiple power conversion modules to be tested, the load temperature is close to the temperature of the power conversion module to be tested. However, in order to effectively ensure the life of the load, the load should be placed in a relatively low temperature environment. In this regard, in this implementation, an air inlet louver 201 is provided on the side of the load room to supply air to the load room, and the air inlet louver 201 is in a fully open state by default to ensure the circulation of air as much as possible. In addition, in the load room, a second exhaust device 202 is provided for exhausting air outside the load room to effectively dissipate heat. As described above, the second exhaust device 202 can be implemented using an exhaust fan, and in actual applications, the second exhaust device 202 is usually allowed to run at full speed all the time to effectively reduce the temperature of the load room. The second spoiler 203 can disturb the airflow in the load room to make the temperature in the load room more uniform.

[0076] Similar to the above, the air inlet louver 201 in this embodiment can be arranged at the lower part of the side of the load room, the second exhaust device 202 can be arranged at the top of the load room, and the second spoiler device 203 can be arranged at the upper part of the side of the load room. Figure 2 This implementation method is adopted in .

[0077] In a specific implementation of the present invention, it may also include:

[0078] A first smoke sensor 110 disposed in the aging room and used for smoke detection in the aging room;

[0079] A second smoke sensor 210 disposed in the load room for detecting smoke in the load room;

[0080] A second temperature sensor 205 disposed in the load room for monitoring the temperature in the load room and feeding back to the controller 301;

[0081] The controller 301 is connected to the first smoke sensor 110, the second smoke sensor 210, the first temperature sensor 105 and the second temperature sensor 205 respectively, so as to control the alarm 302 to issue an alarm message, such as an audible and visual alarm message, when any smoke sensor detects smoke and / or any temperature sensor detects abnormal temperature;

[0082] An alarm 302 connected to the controller 301 for issuing alarm information.

[0083] This implementation method takes into account that in some cases, when performing aging tests on multiple power conversion modules to be tested, multiple power conversion modules to be tested may cause circuit failures or even fires due to reasons such as unqualified product quality. Similarly, the load may also catch fire. In this implementation method, in order to effectively ensure the safety of the aging room and the load room, a first temperature sensor 105 and a first smoke sensor are set in the aging room, and a second temperature sensor and a second smoke sensor are set in the load room. The first temperature sensor 105, the first smoke sensor, the second temperature sensor and the second smoke sensor are all connected to the controller 301, so that when any smoke sensor detects smoke, when any temperature sensor detects abnormal temperature, the controller 301 will control the alarm 302 to issue an audible and visual alarm message. For example, in one case, during the aging test, if the temperature detected by any temperature sensor is higher than 55°C, the controller 301 will consider that the temperature is abnormal, and then control the alarm to issue an alarm message.

[0084] As described above, the alarm 302 is, for example, a sound and light alarm 302, which can be found in Figure 3 , is a schematic diagram of an external perspective of an aging room and a load room in a specific implementation manner. In this implementation manner, an audible and visual alarm 302 is installed outside the door of the load room so that the staff can determine the situation in time.

[0085] In a specific embodiment of the present invention, the aging room and the load room are arranged adjacent to each other and connected through a connecting passage, and the connecting passage has an isolation door opened by a door access system so that the connecting passage between the aging room and the load room remains closed by default.

[0086] This implementation method takes into account that in practical applications, in order to facilitate the aging test and observe the conditions of the aging room and the load room, the aging room and the load room can be set adjacent to each other. In addition, in order to ensure safety, the aging room and the load room can be connected through a connecting channel, that is, the connecting channel plays the role of a connecting corridor between the aging room and the load room, and the connecting channel has an isolation door opened by a door control system, so that the connecting channel between the aging room and the load room remains closed in the default state. In other words, when a staff member needs to enter and exit the aging room or the load room, after arriving at the connecting channel, the door can be operated to enter the door, and the door will automatically close to avoid the situation where the aging room cannot be kept at a constant temperature or the load room cannot be kept at a low temperature due to the staff forgetting to close the door. In addition, since the doors of the aging room and the load room are both doors opened using the door control system, the door will not have abnormal conditions such as artificial opening and closing, which will destroy the constant temperature of the aging room or the low temperature of the load room. Figure 3The access control system is marked as 303, and in Figure 3 In the implementation manner, the isolation door is specifically a heat-insulating fireproof door to ensure safety. Figure 3 The heat-insulating fireproof door is also provided with a glass observation window, for example, a double-layer glass observation window with higher safety.

[0087] Furthermore, in a specific implementation of the present invention, a first switch 304 may be included. The first switch 304 is a mechanical switch so that the door access control of the aging room and the door access control of the load room can be released by manually operating the first switch 304 .

[0088] As can be seen from the above description, the doors of the aging room and the load room are both opened by the access control system, which is to help maintain the constant temperature of the aging room and the low temperature of the load room, rather than to restrict authority. In this implementation, considering that if an abnormal situation occurs in the aging room or the load room, such as a fire, in order to avoid the access control system from hindering the handling of the abnormal situation, a mechanical first switch 304 is provided, so that the access control of the door of the aging room and the door of the load room can be released by manually operating the first switch 304, so that the abnormal situation in the aging room or the load room can be handled in time.

[0089] In one embodiment of the present invention, the aging room and the load room are respectively arranged at different locations, and both have heat-insulating fireproof doors to keep the aging room and the load room in a normally closed state.

[0090] This implementation method takes into account that in some occasions, due to space limitations and other reasons, the aging room and the load room need to be set in different locations. For example, in some occasions, the aging room and the load room are set on different floors. Since the aging room and the load room are set in different locations, in order to ensure safety, both the aging room and the load room are equipped with heat-insulating fire doors to keep the aging room and the load room in a normally closed state.

[0091] In a specific implementation of the present invention, it may also include:

[0092] A first display device 305 connected to the controller 301;

[0093] The multiple power conversion modules to be tested placed in the aging room are all connected to the controller 301 so as to display the working parameters of the multiple power conversion modules to be tested during the aging test through the first display device 305 .

[0094] In this implementation, in order to facilitate the staff to check the working parameters of multiple power conversion modules to be tested at any time, the multiple power conversion modules to be tested are connected to the controller 301, so that the working parameters of the multiple power conversion modules to be tested during the aging test can be displayed through the first display device 305. For example, the current, voltage, operating temperature, working status, working mode, barcode and other information of the multiple power conversion modules to be tested can be uploaded to the controller 301 and displayed on the first display device 305.

[0095] Furthermore, in a specific implementation of the present invention, multiple loads placed in the load room are connected to the controller 301 so that the working parameters of the multiple loads during the aging test are displayed through the first display device 305 .

[0096] In this implementation, in order to facilitate the staff to check the working parameters of multiple loads at any time, multiple loads are connected to the controller 301, so that the working parameters of multiple loads during the aging test can be displayed through the first display device 305, such as multiple load working modes (constant voltage, constant current, constant resistance, constant power), load current, load voltage, load power, load working status, alarm status and other information can all be uploaded to the controller 301 and displayed on the first display device 305.

[0097] exist Figure 3 In a specific implementation, the first display device 305 specifically includes two display screens, thereby distinguishing the operating parameters of the power conversion module to be tested from the operating parameters of the load, which is convenient for the staff to watch. Similarly, considering that the controller 301 of the present application has multiple functions, in actual applications, it can be implemented by a single controller 301 with more resources, or multiple control units can jointly assist in implementing the functions of the controller 301 of the present application, which does not affect the implementation of the utility model, for example Figure 3 and Figure 4 In each case, the controller 301 is composed of two control units.

[0098] In the above text of the present application, the aging test of multiple power conversion modules to be tested is realized by using the aging room and the load room. In some other occasions, the aging room can also be used alone to realize the high-temperature storage test through temperature control. Similarly, the load room can also be used alone to realize the heat dissipation of the power conversion module after the aging test.

[0099] In addition, in some occasions, the aging room and the load room can be used not only to implement the aging test of the above-mentioned multiple power conversion modules to be tested, but also to perform aging test of high-temperature loaded aging cabinet type system equipment.

[0100] The technical solution provided by the embodiment of the utility model is applied to realize the aging test of the power conversion module based on the aging room and the load room, that is, multiple loads are set in the load room, multiple power conversion modules to be tested are placed in the aging room, and multiple power conversion modules to be tested are connected to the load equipment in the load room to power the load equipment. Such a design makes it possible for the load equipment to not be in a high temperature environment when performing the aging test of multiple power conversion modules to be tested, so the solution of the present application is conducive to ensuring the life of the load equipment. In addition, since there is sufficient space in the aging room, it is convenient to implement the test of a large number of power conversion modules to be tested, that is, to implement large-scale testing. In the aging room, an air inlet device 101 for supplying air into the aging room, a first exhaust device 102 for exhausting air outside the aging room, a first spoiler 103 for disturbing the airflow in the aging room, a heating device 104 for generating heat at startup, and a first temperature sensor 105 for monitoring the temperature in the aging room and feeding back to the controller 301 are specifically provided. The controller 301 is connected to the air inlet device 101, the first exhaust device 102, the heating device 104 and the first temperature sensor 105 respectively. The heating device 104 will affect the temperature in the aging room. Usually, at the beginning of the test, when the temperature in the aging room is low, the heating device 104 can be turned on to make the temperature in the aging room rise quickly to the required temperature, that is, the setting of the heating device 104 is conducive to improving the test efficiency. It can be understood that both the air intake and exhaust volume will affect the temperature in the aging room. That is to say, in the process of full power operation of multiple power conversion modules to be tested, the controller 301 mainly uses the air inlet device 101 and the first exhaust device 102 to make the aging room reach a good ventilation balance condition and maintain a constant temperature state. In addition, it should be noted that during the aging test, multiple power conversion modules to be tested, as heat energy generation sources, will emit a large amount of heat, resulting in a high temperature near them. In this regard, the first spoiler device 103 is used to disturb the airflow in the aging room to make the temperature in the aging room more uniform, thereby avoiding the situation where the ambient temperature in the aging room is suitable but the temperature near multiple power conversion modules to be tested is too high. Since the solution of the present application is conducive to achieving a uniform and constant temperature in the entire aging room during the aging test, the solution of the present application can support full-power aging operation of multiple power conversion modules to be tested. In addition, since the present application ensures that the temperature in the aging room is uniform and constant, if a power conversion module to be tested fails during the test and needs to be removed, the timely removal of the power conversion module to be tested has little effect on the temperature in the aging room, and does not affect the remaining power conversion modules to be tested to continue the aging test. In other words, the solution of the present application supports the removal of the faulty power conversion module to be tested at any time during the aging test.

[0101] To sum up, the solution of the present application can effectively realize the aging test of multiple power conversion modules to be tested, support aging test of multiple power conversion modules to be tested at full power, facilitate batch testing, and ensure the life of the load equipment. In addition, during the aging test process, it supports the removal of faulty power conversion modules to be tested at any time.

[0102] It should also be noted that, in this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, article or device including the elements.

[0103] Those skilled in the art may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the utility model. Specific examples are used in this application to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. An aging test system for a power conversion module, characterized in that: include: An air inlet device is arranged in the aging room and is used to supply air into the aging room, a first air exhaust device is used to exhaust air outside the aging room, a first flow disturbing device is used to disturb the airflow in the aging room, a heating device is used to generate heat when starting, and a first temperature sensor is used to monitor the temperature in the aging room and feed back to the controller; Load equipment installed in the load room; A plurality of power conversion modules to be tested are placed in the aging room, and the plurality of power conversion modules to be tested are electrically connected to the load equipment in the load room to supply power to the load equipment; The controller, which is respectively connected to the air inlet device, the first air exhaust device, the heating device and the first temperature sensor, is used to control the working states of the air inlet device, the first air exhaust device and the heating device so as to maintain a constant temperature in the aging room during the aging test.

2. The aging test system for a power conversion module according to claim 1, characterized in that: Also includes: A plurality of aging racks arranged in the aging room and used for placing a plurality of the power conversion modules to be tested; Each of the aging racks is a multi-layer structure and each layer is provided with a cooling fan. When a power conversion module to be tested is placed on any layer of any aging rack, the power conversion module to be tested is limited by the bakelite guide rail of the layer and is electrically connected to the terminal seat of the layer.

3. The aging test system for power conversion module according to claim 1, characterized in that: The air inlet device is arranged at a lower position on the side of the aging room, the first spoiler device is arranged at an upper position on the side of the aging room, the first exhaust device is arranged on the top of the aging room, and the heating device is arranged at a lower position on the side of the aging room and is arranged along the air supply line of the air inlet device.

4. The aging test system for a power conversion module according to claim 1, characterized in that: The aging room comprises a pipe body for structural support and a heat preservation board for heat preservation.

5. The aging test system for power conversion module according to claim 1, characterized in that: Also includes: An air inlet louver is arranged on the side of the load room and is used to supply air into the load room, and the air inlet louver is in a fully open state by default; A second exhaust device disposed in the load room and used for exhausting air to the outside of the load room; A second flow disturbing device is arranged in the load room and is used to disturb the airflow in the load room.

6. The aging test system for power conversion module according to claim 1, characterized in that: Also includes: A first smoke sensor disposed in the aging room and used for performing smoke detection in the aging room; a second smoke sensor disposed in the load room and used for detecting smoke in the load room; A second temperature sensor disposed in the load room, for monitoring the temperature in the load room and feeding back to the controller; The controller is connected to the first smoke sensor, the second smoke sensor, the first temperature sensor and the second temperature sensor respectively, so as to control the alarm to send out an alarm message when any smoke sensor detects smoke and / or any temperature sensor detects abnormal temperature; The alarm is connected to the controller and is used to send out alarm information.

7. The aging test system for a power conversion module according to claim 1, characterized in that: Also includes: a first display device connected to the controller; The multiple power conversion modules to be tested placed in the aging room are all connected to the controller so that the working parameters of the multiple power conversion modules to be tested during the aging test are displayed through the first display device.

8. The aging test system for a power conversion module according to claim 7, characterized in that: The multiple loads placed in the load room are all connected to the controller so that the working parameters of the multiple loads during the aging test are displayed through the first display device.

9. The aging test system for a power conversion module according to any one of claims 1 to 8, characterized in that: The aging room is adjacent to the load room and connected through a connecting passage, and the connecting passage has an isolation door opened by a door access system, so that the connecting passage between the aging room and the load room remains closed by default.

10. The aging test system for a power conversion module according to any one of claims 1 to 8, characterized in that: The aging room and the load room are respectively arranged at different positions, and both have heat-insulating fireproof doors to keep the aging room and the load room in a normally closed state.

Images