CN210517811U - An adjustable power supply device for engine bench test - Google Patents
An adjustable power supply device for engine bench test Download PDFInfo
- Publication number
- CN210517811U CN210517811U CN201920192304.0U CN201920192304U CN210517811U CN 210517811 U CN210517811 U CN 210517811U CN 201920192304 U CN201920192304 U CN 201920192304U CN 210517811 U CN210517811 U CN 210517811U
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- battery
- engine
- charging
- storage battery
- power supply
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Abstract
本实用新型涉及一种发动机台架试验可调式供电装置，包括蓄电池，蓄电池与发动机及部分用电设备串联并对其供电；还包括充电装置、一号接触器和二号接触器，充电装置与蓄电池并联，在蓄电池工作的同时向蓄电池充电；一号接触器串联在蓄电池供电线路中，并由急停按钮控制通断，二号接触器串联在充电装置向蓄电池的充电线路中，并由起动按钮控制通断。有益效果：一、有效解决试验发动机因无法使用发电机而造成的蓄电池亏电故障，可为蓄电池提供充电电源，在给蓄电池充电的同时，通过蓄电池向发动机供电；二、精确控制蓄电池电压值；三、安全、稳定地输出各种试验室所需电压值，为试验室各种用电设备供电；四、此装置可以实现发动机台架急停保护。
The utility model relates to an adjustable power supply device for an engine bench test, which comprises a battery, which is connected in series with an engine and some electrical equipment and supplies power to the battery; and also includes a charging device, a No. 1 contactor and a No. 2 contactor. The batteries are connected in parallel to charge the battery while the battery is working; the No. 1 contactor is connected in series in the battery power supply line, and is controlled by the emergency stop button on/off; The button controls the on and off. Beneficial effects: 1. Effectively solve the battery power loss failure caused by the inability to use the generator for the test engine, and can provide charging power for the battery, while charging the battery, supply power to the engine through the battery; 2. Precisely control the voltage value of the battery; 3. Safely and stably output voltage values required by various laboratories to supply power to various electrical equipment in the laboratory; 4. This device can realize emergency stop protection of engine benches.
Description
Technical Field
The utility model relates to a power supply unit with adjustable engine bench test belongs to the engine bench test field.
Background
At present, the power supply of an ignition system of an engine consists of a storage battery, a generator and a regulator thereof, and the two power supplies are connected in parallel and then connected with electric equipment. When the engine is started or runs at low speed, the generator does not generate electricity, and the electric energy required by the starter, the ignition system and other electric equipment is completely supplied by the storage battery. After the engine normally runs, the generator supplies power to the ignition system and other electric equipment, and simultaneously charges the storage battery.
However, in the engine development stage, the generator is not installed during operation due to torque fluctuation caused by switching of the generator charging or due to special test requirements, and the like, which results in that the electric quantity of the storage battery cannot be supplemented and the power is insufficient, so that the engine cannot be started. And in addition, the voltage value of the storage battery is required to be accurately controlled in some bench tests, and the voltage value of the storage battery cannot be controlled in the mode of charging the storage battery by using the generator.
In addition, in the engine bench test, some electric equipment is directly supplied with power by the storage battery, so that the voltage of the storage battery is unstable, and the engine and the electric equipment cannot work normally; and the emergency stop button on the existing test bed is generally used for controlling the ignition switch, but sometimes the ignition switch is short-circuited, so that the engine cannot be stopped immediately after the emergency stop button is pressed.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned battery insufficient voltage, battery voltage uncontrollable, consumer make battery voltage unstable, scram inefficacy scheduling problem, the utility model provides a power supply unit with adjustable engine bench test.
The adjustable power supply device for the engine bench test comprises a charger, a stabilized voltage power supply, a storage battery, a contactor and the like, wherein the charger charges the storage battery according to a storage battery charging characteristic curve, and the voltage value of the storage battery can be controlled by setting charging voltage. 220V alternating current can be converted into voltage required by a laboratory through a voltage-stabilized power supply. The contactor is connected in series in a power supply line of the storage battery, and the on-off of the contactor is controlled by an emergency stop button.
The utility model can effectively solve the problem of insufficient power of the storage battery caused by the incapability of using the generator for the test engine, provide a charging power supply for the storage battery, and supply power to the engine through the storage battery while charging the storage battery; the current is kept unchanged during the constant-current charging period, manual readjustment is not needed, no overcharge risk exists during continuous charging, and the voltage value of the storage battery can be accurately controlled; the voltage value required by various laboratories can be safely and stably output, and power is supplied to various electric equipment in the laboratories. In addition, the device can realize the protection of the engine bench in emergency stop.
Drawings
FIG. 1 is a schematic diagram of an adjustable power supply device for engine bench test according to the present invention;
in the figure, 1, a panel main switch, 2, an air switch, 3, a safety device, 4, a work indicator light, 5, a voltage-stabilized power supply, 6, a charging device, 7, a first contactor, 8, a charging switch, 9, a voltmeter, 10, an ammeter, 11, a second contactor, 12, a power supply switch, 13, a storage battery, 14, a power supply indicator light, 15, a safety device, 16, a relay and 17, a charging indicator light are arranged.
Detailed Description
Example 1:
as shown in fig. 1, the charging device 6 is powered by a 220V power grid, then is connected with the storage battery 13 in parallel, charges the storage battery 13, and simultaneously, supplies power to the engine and part of electric equipment by the storage battery 13. The charging device 6 accurately controls the voltage of the storage battery 13 by adjusting the charging voltage, and the air switch 2 and the safety 3 are arranged in the power supply line of the charging device 6, so that equipment faults caused by short circuit or large instantaneous current are effectively prevented.
The first contactor 7 is connected in series in a power supply line of the storage battery 13 and is controlled by the emergency stop button, when the engine breaks down and needs emergency stop, the emergency stop button is pressed down, the first contactor 7 is disconnected, the storage battery 13 is completely disconnected with the engine, the situation that the emergency stop fails due to the fact that the ignition switch is short-circuited is prevented, and safety protection is provided for the test bed.
The second contactor 11 is connected in series in a charging line from the charging device 6 to the storage battery 13 and is controlled by a starting button, when the engine is started, after the emergency stop button is pressed, the second contactor 11 is disconnected, the charging device 6 stops charging the storage battery 13, and the tripping fault of the charger caused by overlarge starting current is effectively prevented.
The voltage-stabilized power supply 5 can provide 0-30V voltage for electric equipment, and can effectively solve the problem of electricity utilization of other instruments in a laboratory, such as: pressure sensors, supercharger speed sensors, and the like.
The device is provided with the work indicator lamp 4, the charging indicator lamp 17 and the power supply indicator lamp 14, so that the working condition of the device can be checked quickly and conveniently.
The charging process is as follows: in the early charging stage, the storage battery is subjected to constant-current charging at the selected charging current; when the voltage of the storage battery reaches the uniform charging voltage-stabilizing value of the charging device, the charging is automatically converted into constant-voltage current-reducing charging; when the current is reduced to a conversion threshold value of uniform charging/floating charging, the current is automatically converted into floating charging, and the charging current is zero for a period of time because the voltage at the end of the storage battery is higher than the voltage-stabilizing value of the charging device; it is generally assumed that the battery is fully charged at this time. If the charging is continued, after a certain period of time, trickle flow for maintaining the floating state gradually appears. By utilizing the charging characteristics, each cell of the storage battery pack can be fully charged quickly and sufficiently by using higher (uniform charging) voltage stabilization, and then the storage battery is prevented from being overcharged by using lower (floating charging) voltage maintenance, so that the long-term connection between the charging device and the storage battery is realized, and the storage battery is ensured to be kept in a normal state all the time. The voltage value of the storage battery can be controlled by adjusting the charging voltage during charging.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. The adjustable power supply device for the engine bench test comprises a storage battery (13), wherein the storage battery (13) is connected with an engine and part of electric equipment in series and supplies power to the engine and part of the electric equipment; the method is characterized in that: the charging device (6) is connected with the storage battery (13) in parallel, and the storage battery (13) is charged while the storage battery (13) works; the first contactor (7) is connected in series in a power supply line of the storage battery (13) and is controlled to be switched on and switched off by the emergency stop button, and the second contactor (11) is connected in series in a charging line from the charging device (6) to the storage battery (13) and is controlled to be switched on and switched off by the starting button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920192304.0U CN210517811U (en) | 2019-02-13 | 2019-02-13 | An adjustable power supply device for engine bench test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920192304.0U CN210517811U (en) | 2019-02-13 | 2019-02-13 | An adjustable power supply device for engine bench test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210517811U true CN210517811U (en) | 2020-05-12 |
Family
ID=70543037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920192304.0U Expired - Fee Related CN210517811U (en) | 2019-02-13 | 2019-02-13 | An adjustable power supply device for engine bench test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210517811U (en) |
-
2019
- 2019-02-13 CN CN201920192304.0U patent/CN210517811U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 |