Pulse type power supply control device for thermal battery on missile

Abstract

The invention discloses a pulse type power supply control device for a missile-borne thermal battery. The pulse type power supply control device comprises a voltage sampling circuit, a hysteresis comparison circuit, an MOS tube opening circuit and an MOS tube delay turn-off circuit. The voltage sampling circuit is used for measuring the output voltage of the thermal battery, the hysteresis comparison circuit is used for judging that the output voltage of the thermal battery reaches a power supply output condition, the MOS tube switching-on circuit is used for driving a power supply switching-on MOS tube, and the MOS tube delay switching-off circuit is used for switching off the power supply switching-on MOS tube after timing. The pulse voltage is output when the voltage rises to an effective voltage range after the thermal battery is activated. Power supply output can be achieved after the voltage of the thermal battery meets the use voltage range, power supply output can be automatically turned off in a delayed mode after voltage output, and pulse type power supply is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power supply control for weapons, and in particular to a pulse power supply control device for a thermal battery on a missile. Background Art

[0002] Thermal batteries are widely used in the field of weapons. Their main feature is that there is no voltage output before the battery is activated, and the voltage rises from 0V to the maximum voltage after the battery is activated. In some missile system applications, there is often a scenario where a group of thermal batteries simultaneously supply power to different loads. In order to reduce the power output of the thermal battery and reduce the weight and size of the thermal battery, some pulsed loads need to be supplied with pulsed power. Therefore, it is an urgent need to design a control device with a pulsed power output function for thermal batteries. Summary of the invention

[0003] The purpose of the present invention is to provide a pulse power supply control device for a missile-mounted thermal battery, which solves the technical problem of pulse output of the thermal battery.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a pulse power supply control device for a spring-loaded thermal battery, comprising: a voltage sampling circuit, a hysteresis comparison circuit, a MOS tube opening circuit, and a MOS tube delayed closing circuit;

[0005] The output end of the voltage sampling circuit is connected to the input end of the hysteresis comparison circuit, the output end of the hysteresis comparison circuit is respectively connected to the input ends of the MOS tube opening circuit and the MOS tube delayed shutdown circuit, the output end of the MOS tube delayed shutdown circuit is connected to the MOS tube driving G and S, the S pole of the MOS tube is positively connected to the thermal battery, and the D pole of the MOS tube is positively connected to the output;

[0006] The voltage sampling circuit is used to measure the output voltage of the thermal battery;

[0007] The hysteresis comparison circuit is used to determine whether the output voltage of the thermal battery reaches the power supply output condition;

[0008] The MOS tube turn-on circuit is used to drive the power supply to turn on the MOS tube;

[0009] The MOS tube delayed shut-off circuit is used to shut off the power supply and turn on the MOS tube after timing.

[0010] In the above-mentioned pulse power supply control device for a spring-loaded thermal battery, the voltage sampling circuit needs to divide the thermal battery voltage, and when the thermal battery voltage meets the connection condition, the output voltage of the voltage sampling circuit should match the hysteresis comparison circuit reference 1.

[0011] The above-mentioned pulse power supply control device for a spring-loaded thermal battery, wherein the hysteresis comparison circuit performs voltage judgment after the thermal battery is activated, generates a MOS tube turn-on signal when the thermal battery voltage is greater than the upper limit of the hysteresis interval, and generates a MOS tube turn-off signal when the battery power supply voltage is less than the lower limit of the hysteresis interval.

[0012] In the above-mentioned pulse power supply control device for a spring-loaded thermal battery, the MOS tube opening circuit generates a MOS tube GS driving voltage by resistor voltage division after receiving a MOS tube opening signal, the MOS tube V1 is turned on, and the thermal battery voltage is output.

[0013] In the above-mentioned pulse power supply control device for a spring-loaded thermal battery, the MOS tube delayed shutdown circuit is the output shutdown control core, which charges the capacitor C1 after receiving the MOS tube turn-on signal, and outputs the MOS tube shutdown signal when the capacitor C1 voltage rises to the reference 2.

[0014] Compared with the prior art, the technical benefits of the present invention are:

[0015] The present invention can output power after the voltage of the hot battery meets the use voltage range, and can automatically delay shutting off the power output after the voltage is output, thereby realizing pulse power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] A pulse power supply control device for a spring-loaded thermal battery of the present invention is provided by the following embodiments and drawings.

[0017] Figure 1 The utility model discloses a circuit diagram of a pulse power supply control device for a thermal battery on a bomb. DETAILED DESCRIPTION

[0018] The pulse power supply control device for a spring-loaded thermal battery of the present invention is described in further detail below.

[0019] The present invention proposes a pulse power supply control device for a spring-loaded thermal battery. The device collects and determines the voltage of the thermal battery in real time and outputs a MOS tube turn-on signal. On the one hand, the MOS tube turn-on signal immediately controls the MOS tube V1 to be turned on and outputs the thermal battery voltage. On the other hand, the MOS tube turn-on signal generates a delayed MOS tube turn-off signal through a MOS tube delayed turn-off circuit, controls the MOS tube V1 to be turned off, and turns off the thermal battery output.

[0020] The present invention provides a pulse power supply control device for a spring-loaded thermal battery, comprising: a voltage sampling circuit, a hysteresis comparison circuit, a MOS tube opening circuit, and a MOS tube delayed shutdown circuit. The output end of the voltage sampling circuit is connected to the input end of the hysteresis comparison circuit, the output end of the hysteresis comparison circuit is respectively connected to the input ends of the MOS tube opening circuit and the MOS tube delayed shutdown circuit, the output end of the MOS tube delayed shutdown circuit is connected to the MOS tube drive G and S, the S pole of the MOS tube is positively connected to the thermal battery, and the D pole of the MOS tube is positively connected to the output.

[0021] Preferably, the voltage acquisition circuit in the present invention performs voltage division acquisition through the thermal battery voltage, and the acquired voltage passes through the hysteresis comparison circuit. When the acquired output voltage is higher than the reference 1 voltage in the hysteresis comparison circuit, the hysteresis comparison circuit outputs a high level, which is used to control the MOS tube to turn on. In the early stage of thermal battery activation, the circuit can avoid the fluctuating voltage output when the battery voltage is lower than the turn-on threshold voltage, thereby affecting the power supply quality. At the same time, the hysteresis comparison circuit can effectively suppress the abnormal output shutdown caused by the thermal battery voltage fluctuation.

[0022] After the high level output by the hysteresis comparison circuit passes through the photocoupler Q1 in the MOS tube turn-on circuit, the secondary side of the photocoupler Q1 is turned on, and the resistor R13 and the resistor R14 divide the voltage to obtain the MOS tube V1 drive voltage. The MOS tube V1 is turned on, and the thermal battery voltage starts to be output.

[0023] The high level output by the hysteresis comparison circuit is input to the MOS off-delay shutdown circuit, in which the photoelectric coupler Q2 is turned on, and the thermal battery voltage charges the capacitor C1 through the resistors R16 and R18. When the capacitor C1 voltage is charged to the reference 2 voltage, the operational amplifier N3 outputs a high level, which drives the photoelectric coupler Q3 to turn on, causing the two ends of the resistor R13 to short-circuit, the MOS tube V1 to turn off, and the thermal battery voltage is turned off and output. The time t of the special thermal battery output pulse voltage is determined by adjusting the parameters of the resistors R16, R18 and the capacitor C1.

[0024] In a specific embodiment of the present invention, the output voltage range of the spring-loaded thermal battery is 23V to 36V. After the thermal battery receives the activation signal, the battery voltage gradually increases from 0V. The battery power supply voltage is collected by the differential sampling circuit composed of resistors R1 and R2 and the operational amplifier N1. The battery power supply sampling circuit outputs a 0-14V voltage signal; the sampling circuit output voltage is used as the input voltage of the hysteresis comparison circuit, and the hysteresis comparison circuit outputs a 0V low level or 6.2V high level voltage signal, which is connected to the MOS tube turn-on circuit and the MOS tube delay shutdown circuit. When the thermal battery voltage reaches 26.5V, the hysteresis comparison circuit outputs a high level of 6.2V.

[0025] Further, the 6.2V high level supplies power to the primary side of the photocoupler Q1 through the current limiting resistor R12, the corresponding secondary side of the photocoupler Q1 is turned on, and the thermal battery voltage is divided by the resistors R13 and R14 to obtain the GS voltage of the MOS tube V1, and the MOS tube V1 is turned on.

[0026] Furthermore, the 6.2V high level supplies power to the primary side of the photocoupler Q2 via the current limiting resistor R15, and the corresponding secondary side of the photocoupler Q2 is turned on, and the thermal battery voltage charges the capacitor C1 via the resistors R16 and R18.

[0027] Further, when the voltage of capacitor C1 is charged to the reference 2 voltage (6.2V), the operational amplifier N3 outputs a high level, which supplies power to the primary side of the photocoupler Q3 through the current limiting resistor R20, and the corresponding secondary side of the photocoupler Q3 is turned on, the voltage across the MOS tube GS is short-circuited to 0V, and the MOS tube V1 is turned off.

[0028] It should be noted that the above is only an illustrative description and explanation of the present invention, and those skilled in the art should understand that any modification and replacement of the present invention belongs to the protection scope of the present invention.

Claims

1. A pulse power supply control device for a spring-loaded thermal battery, characterized in that: include: Voltage sampling circuit, hysteresis comparison circuit, MOS tube turn-on circuit, MOS tube delay turn-off circuit; The output end of the voltage sampling circuit is connected to the input end of the hysteresis comparison circuit, the output end of the hysteresis comparison circuit is respectively connected to the input ends of the MOS tube opening circuit and the MOS tube delayed shutdown circuit, the output end of the MOS tube delayed shutdown circuit is connected to the MOS tube driving G and S, the S pole of the MOS tube is positively connected to the thermal battery, and the D pole of the MOS tube is positively connected to the output; The voltage sampling circuit is used to measure the output voltage of the thermal battery; The hysteresis comparison circuit is used to determine whether the output voltage of the thermal battery reaches the power supply output condition; The MOS tube turn-on circuit is used to drive the power supply to turn on the MOS tube; The MOS tube delayed shut-off circuit is used to shut off the power supply and turn on the MOS tube after timing.

2. A pulse power supply control device for a spring-loaded thermal battery as claimed in claim 1, characterized in that: The voltage sampling circuit needs to divide the voltage of the thermal battery. When the voltage of the thermal battery meets the connection condition, the output voltage of the voltage sampling circuit should match the reference 1 of the hysteresis comparison circuit.

3. A pulse power supply control device for a spring-loaded thermal battery as claimed in claim 1, characterized in that: The hysteresis comparison circuit performs voltage judgment after the thermal battery is activated, generates a MOS tube turn-on signal when the thermal battery voltage is greater than the upper limit of the hysteresis interval, and generates a MOS tube turn-off signal when the battery power supply voltage is less than the lower limit of the hysteresis interval.

4. A pulse power supply control device for a spring-loaded thermal battery as claimed in claim 1, characterized in that: After receiving the MOS tube opening signal, the MOS tube opening circuit generates a MOS tube GS driving voltage by resistor voltage division, the MOS tube V1 is turned on, and the thermal battery voltage is output.

5. A pulse power supply control device for a spring-loaded thermal battery as claimed in claim 1, characterized in that: The MOS tube delayed shutdown circuit is the output shutdown control core, which charges the capacitor C1 after receiving the MOS tube turn-on signal, and outputs the MOS tube shutdown signal when the capacitor C1 voltage rises to the reference 2.

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