CN104635168B - It is a kind of to detect that high pressure thermal cell bear the anti-device for filling energy - Google Patents

Abstract

The invention provides a device for detecting that a high-voltage thermal battery can withstand back-filling energy, relates to the field of high-voltage thermal batteries, and is used to solve the lack of a test device at present to detect and verify whether the high-voltage thermal battery can withstand electromechanical servo power. The problem of regenerative energy, the device includes a charging circuit, including a capacitor bank; a loading circuit, including a high-voltage thermal battery to be tested; the charging circuit charges the capacitor bank in it to a preset value, and will charge it to a preset value The capacitor bank is loaded to both ends of the high-voltage thermal battery in the loading circuit as a reverse-feeding voltage source; the loading circuit is used to load the reverse-feeding voltage on the capacitor bank for the high-voltage thermal battery to be tested When the source is used, perform a backfill energy test on the high-voltage thermal battery to be tested. In the above solution, the detection of the regenerative energy of the high-power electromechanical servo system is solved, and at the same time, it has versatility, its structure is simple, it is convenient to use, and it has strong practicability.

Description

A device for detecting that high-voltage thermal batteries can withstand backfilling energy

technical field

The invention relates to the field of high-voltage thermal batteries, in particular to a device for detecting that the high-voltage thermal battery can withstand backfilling energy.

Background technique

During the working process of the electromechanical servo, the electromechanical actuator has two working states of the motor and the generator, and the two interact. The electromechanical actuator works in the state of the motor, and the servo driver performs inversion processing on the direct current of the thermal battery, drives the electromechanical actuator to push the nozzle to do work, and directly converts the electrical energy into the mechanical energy of the nozzle. When the motor is working, the electromechanical actuator consumes electric energy, and the thermal battery must meet the instantaneous peak current of the electromechanical actuator and the steady-state load maintenance current demand. When the electromechanical actuator works in the generator state, the braking energy of the nozzle load is converted into electric energy, and this part of electric energy is superimposed on the output end of the thermal battery through the power circuit. If the braking feedback energy cannot be discharged in time, the bus voltage will rise sharply, which will impact the power circuit of the servo drive and the thermal battery, greatly reducing the stability and reliability of the system. Based on the above working characteristics of electromechanical servo, it is necessary to take design measures to manage the energy in the working process, weaken the voltage and current impact, and ensure the stable and reliable operation of the system.

At present, there are mainly two methods of independent power management and servo driver discharge to manage energy. Among them, using the power manager can improve the energy utilization efficiency of the system, reduce the design capacity of the thermal battery, weaken the output voltage fluctuation of the thermal battery, and improve the output quality of the power supply. Reliability, but also increased production costs and reduced production efficiency. The discharge method of the servo drive is a simplification based on the power manager. It places the discharge resistor inside the servo drive. When the bus voltage exceeds the set threshold during braking, the system feed energy is directly converted into heat consumption through the discharge resistor. . This method has a simple circuit design, reduces system components, and is conducive to improving system reliability, but the energy utilization efficiency is low, and there are special requirements for the peak output capacity of the thermal battery and the ability to withstand backfeeding.

Both the power manager and the servo driver have their own advantages and disadvantages. The key to the choice is whether the thermal battery can withstand current backfeeding, whether the peak output current of the thermal battery can meet the transient response requirements of the system, and whether the output voltage fluctuation of the thermal battery affects the system characteristics. have a direct impact.

However, there is still a lack of a test device to test and verify whether the high-voltage thermal battery can withstand the regenerative energy generated during the electromechanical servo power consumption process, so as to optimize the power supply design.

Contents of the invention

In order to solve the problem that there is still a lack of a test device to detect and verify whether the high-voltage thermal battery can withstand the regenerative energy generated during the electromechanical servo power consumption process, the invention provides a device for detecting that the high-voltage thermal battery can withstand back-feeding energy. It solves the detection of the regenerative energy of the high-power electromechanical servo system. At the same time, the present invention can also realize the reverse feeding energy of different voltages and different capacities according to the requirements of different models, and the waveforms are different, so that the present invention has versatility; and the present invention is simple in structure and easy to use Convenience, bringing convenience to the requirements of the model, and strong practicability, has been applied to the research and development and design of 3.5kW and 10kW electromechanical servo systems.

A device for detecting that a high-voltage thermal battery can withstand backfeeding energy provided by the present invention includes: a charging circuit, including a capacitor bank; a loading circuit, including a high-voltage thermal battery to be tested; the charging circuit charges the capacitor bank in it to preset value, and the capacitor bank charged to the preset value is loaded to both ends of the high-voltage thermal battery in the loading circuit as a back-feeding voltage source; When the high-voltage thermal battery to be tested is loaded with a reverse-feeding voltage source, the reverse-feeding energy test is performed on the high-voltage thermal battery to be tested.

In some specific implementations, the loading circuit is also used to load a load with a predetermined resistance value on the high-voltage thermal battery to be tested when there is no back-feeding voltage source at both ends of the high-voltage thermal battery to be tested. Hot battery for power test.

In some specific embodiments, the charging circuit also includes an adjustable power supply, a voltmeter, and a controllable switch; the adjustable power supply is connected to the positive pole of the capacitor bank through the controllable switch, and the negative pole of the capacitor bank is It is connected to the negative pole of the adjustable power supply, and the voltmeter is connected in parallel to both ends of the adjustable power supply; the controllable switch is turned off when the charging circuit is charging the capacitor bank, and is turned off at other times.

In some specific embodiments, the loading circuit also includes an electronic load with adjustable resistance; the two ends of the electronic load are respectively connected to the positive and negative poles of the high-voltage thermal battery to be tested; When the capacitor bank loads the back-feeding voltage source for the high-voltage thermal battery to be tested, adjust the electronic load to a no-load state, and when there is no back-feeding voltage source at both ends of the high-voltage thermal battery to be tested , adjusting the resistance of the electronic load to a predetermined resistance.

In some specific embodiments, the controllable switch is a single-pole double-throw switch; the fixed end of the controllable switch is fixedly connected to the positive pole of the capacitor bank, and the first moving end of the controllable switch is connected to the positive pole of the capacitor bank. The positive pole of the adjustable power supply is connected, and the second moving terminal is connected with the positive pole of the high-voltage thermal battery to be tested; the negative pole of the capacitor bank is also connected with the negative pole of the high-voltage thermal battery to be tested.

In some specific embodiments, the charging circuit further includes a first ammeter connected in series between the fixed end of the controllable switch and the positive pole of the capacitor bank.

In some specific implementations, the loading circuit also includes a second ammeter and a third ammeter; the positive electrode of the high-voltage thermal battery to be tested passes through the second ammeter and the third ammeter in turn and connects with one end of the electronic load connected, the second moving end of the controllable switch is connected between the second ammeter and the third ammeter.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

1) For servo systems with different voltage levels, the back-feeding energy is different, and the back-feeding voltage also has different levels. The charging voltage of the device provided by the present invention is adjustable, and the adjustable voltage can provide different energy and different voltages. backfill energy;

2) The electronic load is adjustable; when the simulated battery is subjected to reverse energy, the electronic load can be adjusted to the no-load state, completely simulating the actual working conditions;

3) The current in the whole device can be measured, and the current changes in the charging circuit and loading circuit can be observed at any time through the ammeter.

To sum up, this device solves the problem that the regenerative energy of the current high-power electromechanical servo system cannot be effectively detected. The device provided by the invention can realize the back-feeding energy of different voltages and different capacities according to the requirements of different models, and the waveforms are different. This test The connection of the device is simple, reliable, and versatile; it can be used not only for thermal batteries, but also for testing chemical batteries such as zinc-silver batteries and lithium batteries; at the same time, it can meet the different needs of servo regeneration energy for different models.

Description of drawings

Fig. 1 is a schematic structural diagram of a device for detecting the backfeeding energy of a high-voltage thermal battery provided by the present invention.

[Description of Reference Signs]

1. Charging circuit;

2. Loading circuit;

3. Adjustable power supply;

4. High voltage thermal battery;

5. Controllable switch;

C. Capacitor bank;

V, Voltmeter;

R, electronic load;

a, fixed end;

b. The first moving end;

c, the second moving end;

A1, the first ammeter;

A2, the second ammeter;

A3, the third ammeter.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

Figure 1 is a structural schematic diagram of a device for detecting high-voltage thermal batteries capable of withstanding backfilling energy according to the present invention, including:

A charging circuit 1, including a capacitor bank C;

Loading circuit 2, including the high-voltage thermal battery 4 to be tested;

The charging circuit 1 charges the capacitor bank C in it to a preset value, and loads the capacitor bank C charged to the preset value as a back-feeding voltage source to both ends of the high-voltage thermal battery 4 in the loading circuit 2;

The loading circuit 2 is used to perform a backfeed energy test on the high-voltage thermal battery 4 to be tested when the capacitor bank C loads the high-voltage thermal battery 4 with a reverse-feed voltage source.

Wherein, as shown in Figure 1, the loading circuit 2 is also used to load a load with a predetermined resistance value for the high-voltage thermal battery 4 to be tested when there is no back-feeding voltage source at both ends of the high-voltage thermal battery 4 to be tested. Power supply test.

Wherein, as shown in Figure 1, the charging circuit 1 also includes an adjustable power supply 3, a voltmeter V and a controllable switch 5; the adjustable power supply 3 is connected to the positive pole of the capacitor bank C through the controllable switch 5, and the negative pole of the capacitor bank C is connected to The negative pole of the adjustable power supply 3 is connected, and the voltmeter V is connected in parallel with both ends of the adjustable power supply 3; the controllable switch 5 is closed when the charging circuit 1 is charging the capacitor bank C, and is disconnected at other times.

Wherein, as shown in Figure 1, the loading circuit 2 also includes an electronic load R with an adjustable resistance load; the two ends of the electronic load R are respectively connected to the positive and negative poles of the high-voltage thermal battery 4 to be tested; the loading circuit 2 is connected to the capacitor bank When C is the high-voltage thermal battery 4 to be tested with a back-feeding voltage source, the electronic load R is adjusted to a no-load state, and when there is no back-feeding voltage source at both ends of the high-voltage thermal battery 4 to be tested, the electronic load R The resistance value is adjusted to a predetermined resistance value.

Among them, as shown in Figure 1, the controllable switch 5 is a single-pole double-throw switch; the fixed end a of the controllable switch 5 is fixedly connected to the positive pole of the capacitor bank C, and the first moving end b of the controllable switch 5 is connected to the adjustable power supply 3, the second moving terminal c is connected to the positive pole of the high-voltage thermal battery 4 to be tested; the negative pole of the capacitor bank C is also connected to the negative pole of the high-voltage thermal battery 4 to be tested.

Wherein, as shown in FIG. 1 , the charging circuit 1 further includes a first ammeter A1 connected in series between the fixed terminal a of the controllable switch 5 and the positive pole of the capacitor bank C.

Wherein, as shown in Figure 1, the loading circuit 2 also includes a second ammeter A2 and a third ammeter A3; the positive electrode of the high-voltage thermal battery 4 to be tested passes through the second ammeter A2 and the third ammeter A3 in turn and connects with one end of the electronic load R The second moving terminal c of the controllable switch 5 is connected between the second ammeter A2 and the third ammeter A3.

The working principle of the device for detecting that the high-voltage thermal battery can withstand back-filling energy provided by the present invention is as follows: first, the discharge test of the thermal battery is carried out by using a loading circuit: the high-voltage thermal battery 4 is activated, and the electronic load R is adjusted to a full-load state; The controllable switch 5 is adjusted to the second moving end c, that is, the load circuit 2 is connected. In this way, the battery discharge can be simulated for normal servo power consumption. The electronic load R is an adjustable load. Different load current characteristics can be set according to the power consumption characteristics required by different models, and the waveform can also be changed according to different requirements; time and current pulse width All can be set according to actual needs. A withstand backfeed energy test of the high voltage thermal battery can then be performed.

The method for testing the withstand backfilling energy of the high-voltage thermal battery by using the above-mentioned device for detecting the withstandable backfilling energy of the high-voltage thermal battery includes steps:

Step 1: Monitor with a voltmeter V, and adjust the voltage at both ends of the adjustable power supply 3 to a preset value;

Step 2: Connect the capacitor bank C to both ends of the controllable and adjustable power supply 3 until the controllable capacitor bank C is charged to the controllable preset value;

Step 3: Adjust the electronic load R to the no-load state;

Step 4: Load the controllable capacitor bank C charged to the preset value as the back-feeding voltage source to both ends of the high-voltage thermal battery 4 to be tested, simulating the working condition of the regenerative energy back-feeding battery;

Step 5: Determine whether the test is completed, if so, end the test and adjust the electronic load R to a full load state, otherwise return to step 1.

Because the regenerative energy of the electromechanical servo has randomness and repetition, when using the present invention to test the backfeeding energy, it is necessary to repeat the test several times, and control the electronic load to return to the full load state after the final completion.

In the above scheme, the detection of the regenerative energy of the high-power electromechanical servo system is solved. At the same time, the present invention can also realize the reverse feeding energy of different voltages and different capacities according to the requirements of different models, and the waveforms are different, so that the present invention has versatility; and the present invention The structure is simple, which brings convenience to the requirements of the model and has strong practicability. It has been applied in the research and development and design of 3.5kW and 10kW electromechanical servo systems.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (5)

1. a kind of detect that high pressure thermal cell can bear the anti-device for filling energy, it is characterised in that including：

Charging circuit, including capacitor bank；

Loaded circuit, including high pressure thermal cell to be tested；

The charging circuit charges to preset value for the capacitor bank in it, and will charge to the capacitor bank work of preset value The high pressure thermal cell two ends in the loaded circuit are loaded onto for the anti-voltage source filled；

The loaded circuit be used for the capacitor bank for the high pressure thermal cell loading to be tested it is counter fill voltage source when, Anti- filling energy test is carried out to the high pressure thermal cell to be tested；

Further, when the loaded circuit is additionally operable to the voltage source filled at the high pressure thermal cell two ends to be tested without counter, The load of a predetermined resistance is loaded for it, test is powered to the high pressure thermal cell to be tested；

Further, the charging circuit also includes regulated power supply, voltmeter and gate-controlled switch；The regulated power supply passes through described Gate-controlled switch is connected with the positive pole of the capacitor bank, and the negative pole of the capacitor bank is connected with the negative pole of the regulated power supply, The voltmeter is parallel to the regulated power supply two ends；The gate-controlled switch charges in the charging circuit for the capacitor bank When close, and other moment disconnect.

2. detection high pressure thermal cell can bear the anti-device for filling energy as claimed in claim 1, it is characterised in that the loading Circuit also includes the adjustable electronic load of resistance；The two ends of the electronic load respectively with the high pressure thermal cell to be tested Positive and negative electrode is connected；The loaded circuit loads the anti-voltage filled in the capacitor bank for the high pressure thermal cell to be tested During source, the electronic load is adjusted to Light Condition, and at the high pressure thermal cell two ends to be tested without the anti-voltage source filled When, the electronic load resistance is adjusted to predetermined resistance.

3. detection high pressure thermal cell can bear the anti-device for filling energy as claimed in claim 2, it is characterised in that described controllable Switch as single-pole double-throw switch (SPDT)；The not moved end of the gate-controlled switch is fixedly connected with the positive pole of the capacitor bank, described controllable First moved end of switch is connected with the positive pole of the regulated power supply, the second moved end and the positive pole of the high pressure thermal cell to be tested Connection；Negative pole of the negative pole of the capacitor bank also with the high pressure thermal cell to be tested is connected.

4. detection high pressure thermal cell can bear the anti-device for filling energy as claimed in claim 3, it is characterised in that the charging Circuit also includes the first ammeter being series between the not moved end of the gate-controlled switch and the positive pole of the capacitor bank.

5. detection high pressure thermal cell can bear the anti-device for filling energy as claimed in claim 3, it is characterised in that the loading Circuit also includes the second ammeter and the 3rd ammeter；The positive pole of the high pressure thermal cell to be tested passes sequentially through described second It is connected after ammeter, the 3rd ammeter with one end of the electronic load, the second moved end of the gate-controlled switch is connected to described Between second ammeter and the 3rd ammeter.