CN221042383U - Bench test direct-current power supply control system - Google Patents
Bench test direct-current power supply control system Download PDFInfo
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- CN221042383U CN221042383U CN202322797215.8U CN202322797215U CN221042383U CN 221042383 U CN221042383 U CN 221042383U CN 202322797215 U CN202322797215 U CN 202322797215U CN 221042383 U CN221042383 U CN 221042383U
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Abstract
The utility model discloses a bench test direct-current power supply control system, which belongs to the technical field of power supply control and comprises a direct-current power supply circuit module and an alternating-current power supply circuit module, wherein the direct-current power supply circuit module comprises a direct-current power supply and a battery sub-module which are connected in parallel and is used for supplying power for a controller ECU; the alternating current power supply circuit module is connected with a contact of a first contactor and a coil of a second contactor in series, the coil of the first contactor is connected with a first controller in the bench, and the contact of the second contactor is connected in series in a power supply loop of the controller ECU. The switching states of the two contactors are controlled by the first controller so as to realize the control of the power supply output state (supplying power to the controller ECU or stopping supplying power to the controller ECU) of the direct current power supply circuit module; meanwhile, the direct-current power supply and the storage battery which are connected in parallel realize relatively stable voltage (equivalent voltage) output, and the problem that the ECU cannot work due to voltage fluctuation is avoided.
Description
Technical Field
The utility model relates to the technical field of power supply control, in particular to a bench test direct-current power supply control system.
Background
In the development process of an automobile power system, an engine in the power system needs to be tested. The test requires a direct current power supply capable of being controlled remotely, and is started by a bench before the test starts; after the test gives an alarm, the test can be forcibly disconnected when the bench is suddenly stopped. The existing direct current power supply has the following defects and shortages:
1. the existing direct current power supply is arranged in the test room, and is not integrated with a control system of the bench, and can not be controlled to be turned on and turned off through the test bench;
2. The existing direct current power supply has poor stability, cannot be stabilized at a set value for a long time, has fluctuation of output voltage, and the actual working voltage of the controller ECU in a loop is smaller than the output value of the direct current power supply with rated voltage (such as 12V), so that the controller ECU cannot work normally.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a bench test direct-current power supply control system.
The aim of the utility model is realized by the following technical scheme: the system specifically comprises a direct-current power supply circuit module and an alternating-current power supply circuit module, wherein the direct-current power supply circuit module comprises a direct-current power supply and a battery submodule which are connected in parallel and is used for supplying power for a controller ECU; the alternating current power supply circuit module is connected with a contact of a first contactor and a coil of a second contactor in series, the coil of the first contactor is connected with a first controller in the bench, and the contact of the second contactor is connected in series in a power supply loop of the controller ECU.
In one example, the battery submodules are parallel connected battery packs.
In an example, a voltage acquisition module is arranged in a power supply loop of the controller ECU, and the output end of the voltage acquisition module is connected with the first controller.
In one example, a fuse is provided in the power supply circuit of the controller ECU.
In one example, a circuit breaker is provided between the dc power supply and the battery submodule.
It should be further noted that the technical features corresponding to the examples above may be combined with each other or replaced to form a new technical solution.
Compared with the prior art, the utility model has the beneficial effects that:
1. In an example, a first controller in the rack is connected with the direct-current power supply circuit module in a control mode through two contactors, and the first controller controls the switching states of the two contactors so as to further realize the control of the power supply output state of the direct-current power supply circuit module (supplying power to the controller ECU or stopping supplying power to the controller ECU); meanwhile, the direct-current power supply and the storage battery which are connected in parallel realize relatively stable voltage (equivalent voltage) output, and the problem that the ECU cannot work due to voltage fluctuation is avoided.
2. In an example, voltage detection of the power supply loop is achieved through the voltage acquisition module, so that a first controller in the rack can conveniently acquire real-time voltage value transformation conditions in the power supply loop of the controller ECU, and further power supply to the controller ECU is stopped when voltage is abnormal, and working stability and reliability of the controller ECU are guaranteed.
3. In one example, the dc power supply and the controller ECU may be protected by the access breaker and fuse, respectively, to provide overload protection for the power supply loop.
Drawings
The following detailed description of the present utility model is provided in connection with the accompanying drawings, which are included to provide a further understanding of the utility model, and in which like reference numerals are used to designate like or similar parts throughout the several views, and in which are shown by way of illustration of the utility model and not limitation thereof.
FIG. 1 is a schematic diagram of a system control in an example of the utility model;
fig. 2 is a schematic diagram of system control in a preferred example of the present utility model.
In the figure: the device comprises a storage battery 1, a voltage acquisition module 2, a fuse 3 and a circuit breaker 4.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully understood from the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships described based on the drawings are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Further, ordinal words (e.g., "first and second," "first through fourth," etc.) are used to distinguish between objects, and are not limited to this order, but rather are not to be construed to indicate or imply relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
In one example, a bench test DC power supply control system, as shown in FIG. 1, includes a DC power supply circuit module, an AC power supply circuit module. Specifically, the direct current power supply circuit module comprises a direct current power supply and a battery sub-module which are connected in parallel and used for supplying power to the controller ECU, and at the moment, positive and negative voltage ends of the direct current power supply and the battery sub-module are connected with the controller ECU in series to form a power supply loop of the controller ECU. The direct current power supply can be an existing voltage module, and can start working after being connected with the power supply to provide working voltage for the controller ECU. The battery submodule may be a single battery 1 or a plurality of batteries connected in series. The battery submodule is connected with the direct-current power supply output terminal in parallel, when the output voltage of one power supply (the battery submodule or the direct-current power supply) fluctuates (decreases), the equivalent voltage (the voltage supplied to the ECU module) is larger than the output voltage of the voltage fluctuation power supply, and the final voltage output can be ensured to have higher stability. In this example, the voltages of the dc power supply and the storage battery 1 are both 12V, and of course, the specific voltage value can be replaced by the power supply requirement.
Further, in this example, the ac power circuit module is specifically 220V mains supply, and the contact of the first contactor and the coil of the second contactor are connected in series in the circuit module, where the coil of the first contactor is connected with the first controller in the stand, and at this time, the first controller in the stand controls to control the coil of the first contactor to be electrified or powered off by outputting a high-low level, so that the first contactor is in an on or off state; the contact of the second contactor is connected in series in a power supply loop of the controller ECU, namely, the contact of the second contactor is connected in series with the controller ECU at the moment, when the whole alternating current power supply circuit module is closed, namely, the first contactor is closed, the coil of the first contactor is electrified, and the first contactor (contact) is closed; when the first contactor is opened, the coil of the first contactor is de-energized and the first contactor (contact) is opened. In this example, the power supply principle of the controller ECU is:
When the controller ECU needs to operate, a first controller in the bench controls a coil of a first contactor to be electrified, a first contactor KM1 is closed, a coil of a second contactor KM2 in a 12V power supply loop is electrified and closed, the whole power supply loop is connected, at the moment, a parallel connected direct current power supply and a battery submodule output equivalent voltage to supply power to the controller ECU, and the controller ECU is electrified to start operating; when the controller ECU works abnormally (such as a test gives an alarm due to high voltage), a first controller in the bench controls the coil of the first contactor to be disconnected, the first contactor KM1 is disconnected, a second contactor KM2 in the 12V power supply loop is disconnected due to the disconnection of the coil, at the moment, the power supply loop of the controller ECU is disconnected, and the controller ECU stops working when the power supply loop of the controller ECU is disconnected.
In the example, a first controller in the rack is connected with the direct-current power supply circuit module in a control mode through two contactors, and the first controller controls the switching states of the two contactors so as to further realize the control of the power supply output state of the direct-current power supply circuit module (supplying power to the controller ECU or stopping supplying power to the controller ECU); meanwhile, relatively stable voltage (equivalent voltage) output is realized through the direct-current power supply and the storage battery 1 which are connected in parallel, and the problem that the controller ECU cannot work due to voltage fluctuation is avoided.
In one example, the battery sub-modules are battery packs connected in parallel, where the voltage of each battery is the same as the voltage of the dc power source, i.e., each battery is capable of providing an operating voltage for the controller ECU. In the example, the multiple parallel storage batteries are introduced, so that on one hand, the reliability of power supply can be guaranteed, namely, when the power of a single storage battery is exhausted, the working voltage can be provided for the controller ECU through other storage batteries, and on the other hand, the endurance time of a power supply loop is prolonged. Preferably, a temperature sensor is arranged near each storage battery, a signal output pin of the temperature sensor is connected with a data input/output end (I/O interface) of the first controller through a data line, a switch (such as a contactor and a relay) is arranged in each storage battery loop, each temperature sensor transmits collected real-time temperature to the first controller, the first controller in the rack is convenient to obtain real-time temperature transformation conditions of each storage battery, and further when the storage battery works abnormally, the corresponding storage battery stops working by switching off the corresponding switch.
In an example, a voltage acquisition module 2 is provided in a power supply loop of the controller ECU, and a signal output pin of the voltage acquisition module 2 is connected with a data input/output end (I/O interface) of the first controller through a data line (e.g., a CAN line). The voltage acquisition module 2 is a voltage sensor, such as a hall sensor, and is used for acquiring the real-time voltage of the power supply loop and transmitting the real-time voltage back to the first controller, so that the first controller in the rack can conveniently acquire the real-time voltage value transformation condition in the power supply loop of the controller ECU, and further, when the voltage is abnormal (such as the voltage is too low), the power supply to the controller ECU is stopped (the first contactor is disconnected), and the working stability and the reliability of the controller ECU are ensured.
In an example, a fuse 3 is arranged in a power supply loop of the controller ECU, and the controller ECU is connected with the fuse 3 in series, so that when the power supply loop is overloaded, the fuse 3 automatically fuses, and overload protection of the controller ECU is realized.
In an example, a circuit breaker 4, specifically a 60A circuit breaker, is disposed between the dc power supply and the battery submodule, and the circuit breaker 4 is connected between the battery submodule and the positive electrode of the dc power supply, so as to protect the dc power supply, facilitate cutting off the continuous output of the battery 1, and prevent damage to circuits and other devices caused by an excessive output circuit.
Combining the above examples, a preferred embodiment of the present utility model is shown in fig. 2, where the system includes a dc power circuit module and an ac power circuit module; the direct-current power supply circuit module comprises a direct-current power supply and a storage battery 1 which are connected in parallel and is used for supplying power for the controller ECU; the alternating current power supply circuit module is connected with a contact of a first contactor and a coil of a second contactor in series, the coil of the first contactor is connected with a first controller in the bench, and the contact of the second contactor is connected in series in a power supply loop of the controller ECU. Further, a voltage acquisition module 2 and a fuse 3 are connected in series in a power supply loop of the controller ECU, and a circuit breaker 4 is connected in series between the storage battery 1 and the positive electrode of the direct current power supply.
The foregoing detailed description of the utility model is provided for illustration, and it is not to be construed that the detailed description of the utility model is limited to only those illustration, but that several simple deductions and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and are to be considered as falling within the scope of the utility model.
Claims (5)
1. A bench test DC power supply control system is characterized in that: the direct-current power supply circuit module comprises a direct-current power supply and a battery submodule which are connected in parallel and is used for supplying power to the controller ECU; the alternating current power supply circuit module is connected with a contact of a first contactor and a coil of a second contactor in series, the coil of the first contactor is connected with a first controller in the bench, and the contact of the second contactor is connected in series in a power supply loop of the controller ECU.
2. The bench test dc power control system of claim 1, wherein: the battery submodules are storage battery packs connected in parallel.
3. The bench test dc power control system of claim 1, wherein: and a voltage acquisition module is arranged in a power supply loop of the controller ECU, and the output end of the voltage acquisition module is connected with the first controller.
4. The bench test dc power control system of claim 1, wherein: and a fuse is arranged in a power supply loop of the controller ECU.
5. The bench test dc power control system of claim 1, wherein: and a circuit breaker is arranged between the direct-current power supply and the battery submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322797215.8U CN221042383U (en) | 2023-10-18 | 2023-10-18 | Bench test direct-current power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322797215.8U CN221042383U (en) | 2023-10-18 | 2023-10-18 | Bench test direct-current power supply control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221042383U true CN221042383U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322797215.8U Active CN221042383U (en) | 2023-10-18 | 2023-10-18 | Bench test direct-current power supply control system |
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| CN (1) | CN221042383U (en) |
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2023
- 2023-10-18 CN CN202322797215.8U patent/CN221042383U/en active Active
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