Load device for power supply discharge

Abstract

The invention discloses a load device for power supply discharge, which is characterized by comprising a plurality of resistive loads connected with a power supply to be tested; the resistive load is arranged in the metal shell, and two opposite surfaces of the metal shell are respectively provided with a plurality of heat dissipation windows; the plurality of heat dissipation modules are respectively arranged in the heat dissipation windows, and the heat dissipation modules are connected with a power supply to be tested and are used for dissipating heat generated by the resistive load; and the control module comprises a first control switch and a plurality of second control switches which are respectively arranged on the metal shell, and the first control switch is connected with each resistive load and is used for controlling on and off of all the resistive loads. According to the invention, the two opposite surfaces of the metal shell are respectively provided with the plurality of heat dissipation windows, and the heat dissipation windows are internally provided with the heat dissipation modules, so that the heat dissipation performance of the load device is improved. Meanwhile, the metal shell is adopted to ensure the safety of testers under abnormal conditions, and the danger of fire disasters is prevented.

Description

Technical Field

[0001] The invention relates to the field of power supply loads, and in particular to a load device for power supply discharge. Background Art

[0002] With the widespread application of outdoor energy storage power supplies, in order to meet the discharge test needs of energy storage power supplies of different sizes, power supply discharge load devices are usually used. Power supply discharge load devices (Electronic Load) are devices used to test and verify power supply devices. They can simulate real load conditions to evaluate the performance and stability of power supplies. When the load device simulates current or voltage loads, it absorbs the energy provided by the power supply, and part of the energy is converted into heat energy instead of being consumed by the load. The process of converting this energy into heat is inevitable, especially when running at high power or for a long time, the load device will generate a lot of heat.

[0003] In the prior art, a cement resistor load box is generally used to perform a discharge test on an energy storage power supply. However, the cement resistor load box has a problem of poor heat dissipation performance. Summary of the invention

[0004] The main purpose of the present invention is to provide a load device for power supply discharge, aiming to solve the problem of how to improve the heat dissipation performance.

[0005] To achieve the above object, the present invention provides a load device for power supply discharge, comprising:

[0006] Multiple resistive loads, connected to the power supply to be tested;

[0007] A metal shell, wherein the resistive load is arranged in the metal shell, and a plurality of heat dissipation windows are respectively arranged on two opposite surfaces of the metal shell;

[0008] A plurality of heat dissipation modules are respectively arranged in the heat dissipation windows, and the heat dissipation modules are connected to the power supply to be tested and are used to dissipate the heat generated by the resistive load;

[0009] A detection module, located in the metal housing and connected to the resistive load, for detecting data when the resistive load is in operation;

[0010] The control module includes a first control switch and multiple second control switches respectively arranged on the metal shell, wherein the first control switch is connected to each of the resistive loads to control the opening and closing of all the resistive loads; any of the second control switches is connected to multiple resistive loads to control the opening and closing of multiple resistive loads.

[0011] Furthermore, the resistive load is divided into a first load group and a second load group, the first load group includes at least one resistive load, and the second load group includes at least one resistive load.

[0012] Furthermore, a barrier is provided in the metal shell, and the barrier divides the metal shell into a first chamber and a second chamber, and any one of the first load group and the second load group is located in the first chamber, and the other load group is located in the second chamber.

[0013] Furthermore, each of the heat dissipation modules includes a first heat dissipation group and a second heat dissipation group, the first heat dissipation group is connected to the first chamber for dissipating heat from the first load group, and the second heat dissipation group is connected to the second chamber for dissipating heat from the second load group.

[0014] Furthermore, the multiple heat dissipation modules include multiple air inlet fans and multiple air outlet fans, and the air inlet fans and the air outlet fans are respectively arranged in the heat dissipation windows. The air inlet fans are used to transport gas to the metal shell, and the air outlet fans are used to discharge gas in the metal shell.

[0015] Furthermore, the control module includes a plurality of control switches, and each of the control switches controls at least one of the resistive loads.

[0016] Furthermore, it also includes a transportation module, which is arranged at the bottom of the metal shell and is used to transport the metal shell.

[0017] Furthermore, it also includes a display module, which is located on the metal shell and is used to display the data detected by the detection module.

[0018] Furthermore, the resistive load is a light bulb.

[0019] Furthermore, the base of the light bulb is a ceramic spiral cup base.

[0020] The beneficial effect of the technical solution of the present invention is that a plurality of heat dissipation windows are respectively arranged on two opposite surfaces of the metal shell, and a heat dissipation module is arranged in the heat dissipation window, thereby improving the heat dissipation performance of the load device. At the same time, the use of the metal shell ensures that the safety of the test personnel can be guaranteed in abnormal situations and prevents the risk of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a load device for power supply discharge of the present invention;

[0022] Figure 2 It is a schematic diagram of the back structure of an embodiment of a load device for power supply discharge of the present invention;

[0023] Figure 3 The present invention is a top view of an embodiment of a load device for power discharge according to the present invention.

[0024] Description of Figure Numbers:

[0025] Label name Label name 1 Resistive load 2 Metal housing 3 Heat dissipation window 4 Air intake fan 5 Air outlet fan 6 First control switch 7 Second control switch 8 Display Module 9 Control buttons 11 First load group 12 Second load group 15 Barrier 16 First chamber 17 Second chamber 18 Ceramic spiral cup holder 19 Wire hole 20 Security door 21 Hollow structure 41 The first cooling group 42 Second heat sink 40 Cooling module 61 Control Module

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a 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 creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include multiple such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The main purpose of the present invention is to provide a load device for power supply discharge, aiming to solve the problem of how to improve the heat dissipation performance.

[0032] Specifically, Figure 1As shown, the invention proposes a load device for power supply discharge, including: a metal shell 2, a detection module, a control module 61, a first control switch 6, a plurality of second control switches 7, a plurality of heat dissipation modules 40 and a plurality of resistive loads 1. The plurality of resistive loads 1 are connected to the power supply to be tested, and are used to perform a discharge test on the power supply to be tested, so as to evaluate the performance and stability of the power supply to be tested. Specifically, the resistive load 1 is arranged in the metal shell 2, and a plurality of heat dissipation windows 3 are respectively arranged on two opposite surfaces of the metal shell 2. Exemplarily, the shape of the heat dissipation window 3 is rectangular. A plurality of heat dissipation modules 40 are respectively arranged in the heat dissipation window 3, and the heat dissipation module 40 is connected to an external power supply, which can be a mains power supply or other AC power supply. The external power supply is used to power the heat dissipation module 40, and the heat dissipation module 40 is used to dissipate the heat generated by the resistive load 1. The detection module is located in the metal shell 2, connected to the resistive load 1, and is used to detect the data when the resistive load 1 is running. It should be noted that the metal shell 2 is made of cold-rolled sheet as a material to form a box shape, and the cold-rolled sheet can be a steel plate, an aluminum plate, a stainless steel plate, or other metal plates. Steel plates have good strength, machinability and corrosion resistance. Aluminum plates are light in weight and can obtain high strength and excellent surface treatment properties through a cold rolling process. Cold-rolled stainless steel plates have excellent corrosion resistance. The metal shell 2 can use different metal plates according to different needs. A large amount of heat will be generated when the power supply to be tested is load tested. The metal shell 2 has high thermal conductivity and can increase the heat dissipation efficiency of the load. At the same time, the ignition point of the metal shell 2 is very high, and it can isolate the flame when it burns due to overheating inside, avoiding the occurrence of fire. In addition, the metal shell 2 has a high structural strength, which can ensure the safety of the tester when an abnormality occurs in the load device. Furthermore, the shape of the metal shell 2 can be a rectangular parallelepiped, a cube, or other shapes.

[0033] Further, the data detected by the detection module include the voltage of the power supply to be tested, the current of the power supply to be tested, the power of the power supply to be tested, the cumulative discharge time of the power supply to be tested, the energy (Wh) of the discharge of the power supply to be tested, and the power factor (PF value) of the power supply to be tested. Specifically, the voltage of the power supply to be tested is detected by a digital voltmeter (Digital Voltmeter) connected in parallel to the power supply to be tested. The voltage of the power supply to be tested is detected by an ammeter (Ammeter) connected in series to the power supply to be tested. The power of the power supply to be tested is detected by a power analyzer (PowerAnalyzer) connected to the power supply to be tested. The power analyzer can measure voltage and current at the same time and calculate active power and reactive power. The cumulative discharge time of the power supply to be tested is detected by a timer (Timer), the energy of the discharge of the power supply to be tested is calculated by power and time, and the power factor of the power supply to be tested is obtained by calculating the ratio of active power to apparent power.

[0034] As an implementation method, Figure 1 As shown, the front side of the metal shell 2 is a rotatable safety door 20. After opening the safety door 20, the components in the metal shell 2 can be installed, removed and maintained. After closing the safety door 20, the components in the metal shell 2 can be protected, and the safety of the tester can be guaranteed when an abnormality occurs in the load device. Furthermore, the safety door 20 is also provided with a hollow structure 21, which can improve the heat dissipation efficiency in the metal shell 2 after closing the safety door 20. As an embodiment, Figure 2 As shown, a hollow structure 21 is also provided on the back of the metal shell 2 to further improve the heat dissipation efficiency in the metal shell 2 .

[0035] As an implementation mode, a first control switch 6 and a plurality of second control switches 7 are respectively arranged on the metal housing 2, and the first control switch 6 is connected to each resistive load 1, and is used to control the opening and closing of all resistive loads 1. Any second control switch 7 is connected to a plurality of resistive loads 1, and is used to control the opening and closing of a plurality of resistive loads 1. In a specific implementation mode, a first control switch 6 and a number of second control switches 7 corresponding to the number of group loads are arranged on the metal housing 2, and each second control switch 7 is connected to a group load, that is, a total load input switch is arranged on the metal housing 2, and each resistive load 1 has an independent switch, so that the resistive load 1 is individually controlled.

[0036] As an embodiment, the resistive load 1 is divided into a first load group 11 and a second load group 12, wherein at least one resistive load 1 is provided in the first load group 11, and at least one resistive load 1 is provided in the second load group 12. Furthermore, a barrier 15 is provided in the metal shell 2, and the barrier 15 divides the metal shell 2 into a first chamber 16 and a second chamber 17. Exemplarily, the barrier 15 divides the metal shell 2 into an upper chamber and a lower chamber, wherein the upper chamber is the first chamber 16, and the lower chamber is the second chamber 17, and it is more convenient to install and remove the resistive load 1 in the first chamber 16 and the second chamber 17. The barrier 15 can be a metal plate or a barrier plate of other materials, and a wire hole 19 for allowing a wire to pass through is also provided in the barrier 15. Either of the first load group 11 and the second load group 12 is located in the first chamber 16, and the other load group is located in the second chamber 17. Specifically, the resistive load 1 is a high-power bulb, which refers to a bulb with a power of more than 100w. For example, the resistive load 1 is a 500w halogen tungsten filament bulb. The halogen tungsten filament bulb can provide stable resistance characteristics when working, which is very important for discharge devices that need to control current or voltage, ensuring that the discharge process is stable and the circuit will not fail or be unstable due to resistance changes. In addition, the halogen tungsten filament bulb can withstand high operating temperatures during the discharge process without being easily damaged due to high temperature resistance, has a long service life, and reduces the frequency of maintenance and replacement. At the same time, the halogen tungsten filament bulb has the ability to quickly respond to voltage changes, can reach a stable working state in a short time, can start quickly, and quickly reach a stable operating state. For example, a total of 10 halogen tungsten filament bulbs are provided, and the 10 halogen tungsten filament bulbs are divided into a first load group 11 and a second load group 12. The first load group 11 and the second load group 12 are each provided with 5 halogen tungsten filament bulbs. The first load group 11 is located in the first chamber 16, and the second load group 12 is located in the second chamber 17.

[0037] Furthermore, the base of the bulb is a ceramic spiral cup 18. The ceramic spiral cup 18 has excellent heat dissipation performance, can effectively dissipate heat, and maintain the temperature of the high-power bulb stable. In addition, the ceramic spiral cup 18 is resistant to high temperatures. The ceramic material can withstand high temperatures and is not easily deformed or damaged, which is suitable for the requirements of long-term high-power discharge testing. At the same time, ceramics have good electrical insulation properties, which can effectively isolate the electrodes and the shell of the bulb to ensure safety during the test. In addition, ceramic materials generally have good mechanical strength and can withstand the weight of the bulb and the vibration or impact of the external environment.

[0038] As an embodiment, each heat dissipation module 40 includes a first heat dissipation group 41 and a second heat dissipation group 42. The first heat dissipation group 41 is connected to the first chamber 16 and is used to dissipate the heat of the first load group 11. The second heat dissipation group 42 is connected to the second chamber 17 and is used to dissipate the heat of the second load group 12. Specifically, a total of four heat dissipation windows 3 are arranged on two opposite sides of the metal shell 2, and a heat dissipation module 40 is arranged in each heat dissipation window 3. Among them, the heat dissipation module 40 in the heat dissipation window 3 connected to the first chamber 16 is the first heat dissipation group 41, and the heat dissipation module 40 in the heat dissipation window 3 connected to the second chamber 17 is the second heat dissipation group 42. Specifically, the heat dissipation module 40 is composed of heat dissipation fans, and 8 heat dissipation fans are arranged in each heat dissipation window 3.

[0039] Further, such as Figure 1 and Figure 2 As shown, the first heat dissipation group 41 and the second heat dissipation group 42 include a plurality of air inlet fans 4 and a plurality of air outlet fans 5, which are respectively arranged in the heat dissipation window 3, the air inlet fans 4 are used to deliver gas to the metal shell 2, and the air outlet fans 5 are used to discharge the gas in the metal shell 2. Specifically, the blades of the heat dissipation fans of the air inlet fans 4 and the air outlet fans 5 rotate in opposite directions, and all the heat dissipation fans are powered by an external power supply to avoid affecting the load test of the power supply to be tested.

[0040] Further, the load device also includes a transport module, which is arranged at the bottom of the metal shell 2 and is used to transport the metal shell 2. Exemplarily, the transport module is 4 pulleys, and the 4 pulleys are respectively arranged at the corners of the bottom of the metal shell 2 to increase the balance during the transportation of the metal shell 2. Specifically, the pulley can be a universal pulley to make the transportation of the metal shell 2 more flexible.

[0041] Further, the load device also includes a display module 8, which is located on the metal housing 2 and is used to display the data detected by the detection module. Exemplarily, the display module 8 includes a display screen, which can display the voltage of the power supply to be tested, the current of the power supply to be tested, the power of the power supply to be tested, the cumulative discharge time of the power supply to be tested, the energy of the discharge of the power supply to be tested, and the power factor of the power supply to be tested.

[0042] As an embodiment, the load device further includes a data recording module, which can record the energy of discharge and the cumulative time of discharge when the power supply to be tested is discharged, and automatically save the recorded data when the power supply to be tested is powered off. Further, a control button 9 is also provided on the metal shell 2. For example, long press the control button 9 on the metal shell 2 for three seconds to enter the setting mode, and double-click the control button 9 to clear the cumulative time and cumulative energy of discharge.

[0043] In a specific embodiment, the shell of a load device for power supply discharge of the present invention is a metal shell 2, and a total of 10 resistive loads 1 are arranged in the metal shell 2, and the resistive load 1 is a 500w halogen tungsten filament bulb, and the base of the bulb is a ceramic spiral cup seat 18. A barrier 15 is arranged in the metal shell 2, and the metal shell 2 is divided into a first chamber 16 and a second chamber 17, and the first chamber 16 and the second chamber 17 are respectively provided with 5 resistive loads 1. A detection module is also arranged in the metal shell 2, and the detection module is connected to each resistive load for detecting data when the resistive load is running. The heat dissipation windows 3 are respectively arranged on both sides of the shell 2, and the heat dissipation modules 40 are respectively arranged in the heat dissipation windows 3. The heat dissipation module 40 includes a first heat dissipation group 41 and a second heat dissipation group 42. The first heat dissipation group 41 includes 8 air inlet fans 4 and 8 air outlet fans. The second heat dissipation group 42 includes 8 air inlet fans and 8 air outlet fans. A total of 32 fans are provided. All fans are powered by an external power supply. The total power of the load device can reach 5000W. According to the Japanese standard voltage 100V input calculation, it can withstand a maximum current of 40A. Figure 3 As shown, a control module 61 is further provided above the housing 2, and the control module 61 includes a first control switch 6 and a second control switch 7, wherein the first control switch 6 can control the main switch of the load device, and the second control switch 7 can individually control a resistive load 1. The heat dissipation module 40 of the present invention has efficient heat dissipation performance, ensuring that the load device can maintain good heat dissipation performance during operation, and preventing the performance degradation or damage of the bulb due to excessive temperature.

[0044] The beneficial effect of the technical solution of the present invention is that a plurality of heat dissipation windows are respectively arranged on two opposite surfaces of the metal shell, and a heat dissipation module is arranged in the heat dissipation window 3, thereby improving the heat dissipation performance of the load device. At the same time, the use of the metal shell ensures that the safety of the test personnel can be guaranteed in abnormal situations and prevents the risk of fire.

[0045] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A load device for power supply discharge, characterized in that: include: Multiple resistive loads, connected to the power supply to be tested; A metal shell, wherein the resistive load is arranged in the metal shell, and heat dissipation windows are respectively arranged on two opposite surfaces of the metal shell; A plurality of heat dissipation modules are respectively arranged in the heat dissipation windows, and the heat dissipation modules are connected to the power supply to be tested and are used to dissipate the heat generated by the resistive load; A detection module, located in the metal housing and connected to the resistive load, for detecting data when the resistive load is in operation; A control module, comprising a first control switch and a plurality of second control switches respectively arranged on the metal housing, wherein the first control switch is connected to each of the resistive loads and is used to control the opening and closing of all the resistive loads; Any of the second control switches is connected to a plurality of the resistive loads, and is used to control the opening and closing of the plurality of the resistive loads.

2. The load device for power supply discharge according to claim 1, characterized in that: The resistive loads are divided into a first load group and a second load group. The first load group includes at least one resistive load, and the second load group includes at least one resistive load.

3. The load device for power supply discharge according to claim 2, characterized in that: A barrier is provided in the metal shell, and the barrier divides the metal shell into a first chamber and a second chamber. Either the first load group or the second load group is located in the first chamber, and the other load group is located in the second chamber.

4. The load device for power supply discharge according to any one of claim 3, characterized in that: Each of the heat dissipation modules includes a first heat dissipation group and a second heat dissipation group. The first heat dissipation group is connected to the first chamber for dissipating heat from the first load group. The second heat dissipation group is connected to the second chamber for dissipating heat from the second load group.

5. The load device for power supply discharge according to claim 4, characterized in that: The first heat dissipation group and the second heat dissipation group each include a plurality of air inlet fans and a plurality of air outlet fans, the air inlet fans and the air outlet fans are respectively arranged in the heat dissipation windows, the air inlet fans are used to transport gas to the metal shell, and the air outlet fans are used to discharge gas in the metal shell.

6. The load device for power supply discharge according to any one of claims 1 to 5, characterized in that: The control module further includes a control button, and the control button is connected to a storage module for storing data detected by the detection module to clear the data in the storage module.

7. The load device for power supply discharge according to any one of claims 1 to 5, characterized in that: It also includes a transport module, which is arranged at the bottom of the metal shell and is used to transport the metal shell.

8. The load device for power supply discharge according to any one of claims 1 to 5, characterized in that: It also includes a display module, which is located on the metal shell and is used to display the data detected by the detection module.

9. The load device for power supply discharge according to any one of claims 1 to 5, characterized in that: The resistive load is a light bulb.

10. The load device for power supply discharge according to claim 9, characterized in that: The base of the light bulb is a ceramic spiral cup base.

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