Dual-power supply missile-mounted electrical system power supply circuit

Abstract

The invention discloses a dual-power-supply missile-borne electrical system power supply circuit, which implements a dual-power-supply missile-borne electrical control system, divides steering engine power supply and other missile-borne single-machine equipment power supply into two independent loops, realizes isolation on a power supply physical level, and improves the power supply reliability. Crosstalk between the steering engine and other single machines is avoided, and the electromagnetic compatibility of the whole missile electrical system is improved. According to the composition of an electrical system on a current missile and the unique power supply in the current missile is a thermal battery, a method for optimizing the design of the thermal battery is considered, and an original thermal battery output method of one-way output is changed into a thermal battery with one-time thermal battery activation, two-way power supply output and two-way output isolation; according to the corresponding missile-borne power supply system, the two power supply grounds are isolated, and the two power supply loops are independent of each other and do not interfere with each other.

Description

Technical Field

[0001] The invention relates to a power supply circuit for a dual-power supply spring-mounted electrical system, belonging to the technical field of power supply electronics. Background Art

[0002] In response to the ever-changing battlefield environment and combat concepts, new weapon models have emerged in recent years, and the adaptability of weapon models to complex electromagnetic environments has also been continuously improved. The most effective way to improve the electromagnetic compatibility of the entire bomb is to take into account the design concept of electromagnetic compatibility at the beginning of system design, so as to improve the electromagnetic compatibility of the entire bomb at a lower cost and with the lowest price.

[0003] For current precision-guided bombs, thermal batteries are usually used to power the electrical system of the entire bomb after separation to ensure the normal operation of each single device. The servo has a rotor mechanism, which will rotate at different angles and frequencies as the bomb's posture changes during operation, thereby introducing certain harmonics on its power supply ground, causing interference to other single devices on the bomb in the form of crosstalk. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art and provide a dual-power supply missile electrical system power supply circuit, aiming to solve the problem of ensuring the normal operation of the whole missile after the whole missile is disconnected and unplugged, reduce the influence of the servo power supply on other single-machine systems of the whole missile, avoid crosstalk between the servo and other single machines, and improve the electromagnetic compatibility of the electrical system of the whole missile.

[0005] The technical solution of the present invention is: a power supply circuit for a dual-power supply missile electrical system, the power supply circuit comprising a thermal battery and a power module;

[0006] The thermal battery provides two mutually isolated power supply output signals, which are recorded as the first power supply output signal and the second power supply output signal. The first power supply output signal is connected to the servo for powering the servo; the second power supply output signal is connected to the power module, which converts the second power supply output signal into a secondary power supply and provides it for powering other units on the missile.

[0007] Preferably, the thermal battery includes a first battery stack and a second battery stack; the first battery stack is used to generate a first power supply output signal, and the second battery stack is used to generate a second power supply output signal; an isolation layer is provided between the first battery stack and the second battery stack so that the first battery stack and the second battery stack are isolated from each other and do not interfere with each other.

[0008] Preferably, the isolation layer comprises a first mica pad, a second mica pad and an asbestos pad, and the asbestos pad is sandwiched between the first mica pad and the second mica pad.

[0009] Preferably, the first battery stack, the isolation layer, and the second battery stack are closely arranged in order from top to bottom and then packaged together.

[0010] Preferably, the power supply circuit further includes an onboard controller, the second power supply output signal is connected to the onboard controller, the onboard controller includes a power management module, and the power management module converts and distributes the second power supply output signal to supply power to other units on the missile.

[0011] Preferably, the onboard controller also includes a servo control module, which is used to output a drive signal to the servo to control the deflection of the servo according to the status information and servo command information fed back by the servo; the power supply and ground of the servo control module and the power management module are isolated from each other.

[0012] Preferably, the onboard controller is also used to output an activation signal to the thermal battery to activate the first battery stack and the second battery stack at one time.

[0013] Preferably, the individual units on the missile other than the steering gear communicate via the missile-borne controller.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The power supply method of the missile electrical system designed by the present invention can achieve physical isolation of the servo and other single-machine power supplies by low-cost means, and improve the electromagnetic compatibility of the entire missile;

[0016] (2) The present invention utilizes thermal batteries and ingeniously introduces two isolated output power supplies to provide more design possibilities for the missile electrical system design.

[0017] (3) In the thermal battery of the present invention, the first battery stack and the second battery stack are activated at one time, thereby improving the synchronization of the two power supply output signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a thermal battery in a novel power supply mode of an electrical system on a missile according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of a new power supply mode of the electrical system on the bomb according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal circuit of the thermal battery according to an embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal circuit of the onboard controller according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] For current precision-guided bombs, thermal batteries are usually used to power the electrical system of the entire bomb after separation to ensure the normal operation of each single device. The servo has a rotor mechanism, which will rotate at different angles and frequencies as the bomb's posture changes during operation, thereby introducing certain harmonics on its power supply ground, causing interference to other single devices on the bomb in the form of crosstalk.

[0024] The present invention proposes a novel design of a power supply mode for an onboard electrical system, which is described in detail as follows in conjunction with the accompanying drawings and embodiments:

[0025] The missile thermal battery is the only power source after the entire missile leaves the frame. Physical separation of power from the source is a key step in realizing a new power supply mode for the missile electrical system. The voltage of the missile thermal battery is achieved by stacking the battery stack to meet the voltage index requirements of the design. Once the number of battery stacks is determined, the output voltage is also determined. In order to meet the designer's needs for different voltages while taking into account the stability of the output, two isolated battery stacks can be designed in the missile thermal battery without interfering with each other. One of them is responsible for independently powering the missile servo, and the other is responsible for powering other single units on the missile.

[0026] like Figure 1 As shown, the power supply circuit of the missile electrical system proposed by the present invention is mainly composed of a missile thermal battery 1, a missile-borne controller 2, and a power module 3;

[0027] The missile thermal battery 1 is the only power supply in the missile. In order to improve the power supply mode, the design method of the thermal battery is optimized. In order to meet the overall demand for different voltages and take into account the stability of the output, two isolated battery stacks can be designed in the missile thermal battery 1, which do not interfere with each other and provide multiple isolated power supplies for the overall system. At the same time, the servo power supply needs to be separated from the missile-borne controller 2 to ensure the independence of the power supply. The power module 3 is mainly responsible for separating the power supply of other single machines on the missile.

[0028] like Figure 2 and Figure 3 As shown, the thermal battery provides two mutually isolated power supply output signals, which are recorded as the first power supply output signal and the second power supply output signal. The first power supply output signal is connected to the steering gear to power the steering gear; the second power supply output signal is connected to the power module, and the power module converts the second power supply output signal into a secondary power supply and provides it to power other units on the missile. For example: power supply for units such as inertial measurement units, satellite receivers, etc. that have precision requirements and weak anti-interference capabilities, or fuses, etc. that have excitation signals and have high requirements for excitation signal accuracy. The power modules can be increased or decreased according to actual usage requirements.

[0029] like Figure 4As shown, the missile-borne controller includes a power management module and a steering gear control module. The power management module converts and distributes the second power supply output signal to supply power to other units on the missile. The steering gear control module is used to output a drive signal to the steering gear according to the state information and steering gear command information fed back by the steering gear to control the deflection of the steering gear; the power supply and ground of the steering gear control module and the power management module are isolated from each other, and the power supply grounds of the two modules are isolated from each other. If the respective input power is independent of each other, the current fluctuation caused by the load change of one way will not affect the working state of the other way. The units on the missile other than the steering gear communicate through the missile-borne controller.

[0030] like Figure 3 As shown, the thermal battery 1 includes a first battery stack and a second battery stack; the first battery stack is used to generate a first power supply output signal, and the second battery stack is used to generate a second power supply output signal; an isolation layer is provided between the first battery stack and the second battery stack so that the first battery stack and the second battery stack are isolated from each other and do not interfere with each other.

[0031] The isolation layer includes a first mica pad, a second mica pad and an asbestos pad, and the asbestos pad is sandwiched between the first mica pad and the second mica pad. The first battery stack, the isolation layer, and the second battery stack are closely arranged in order from top to bottom and then packaged together to compress the volume of the thermal battery and save space. The asbestos pad and the mica pad can also be replaced by other insulating and high temperature resistant materials.

[0032] The onboard controller is also used to output an activation signal to the thermal battery to activate the first battery stack and the second battery stack at one time.

[0033] To sum up, based on the problem that the servos in the electrical system will generate interference when working and thus affect the electromagnetic compatibility of the entire missile, the present invention provides a new power supply method for the missile-mounted electrical system, using an isolated dual-power missile-mounted electrical power supply system, and dividing the servo power supply and other single-machine power supply on the missile into two independent circuits, thereby achieving isolation at the physical level of power supply, avoiding crosstalk between the servos and other single machines, and improving the electromagnetic compatibility of the entire missile-mounted electrical system.

[0034] The parts of the present invention that are not described in detail are all known technologies to those skilled in the art. The above description is a specific embodiment of the present invention and is not intended to limit the present invention. Any changes or improvements within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual power supply spring electrical system power supply circuit, characterized in that It comprises a thermal battery (1) and a power module; The thermal battery provides two mutually isolated power supply output signals, which are recorded as a first power supply output signal and a second power supply output signal. The first power supply output signal is connected to the steering gear to supply power to the steering gear. The second power supply output signal is connected to the power supply module, and the power supply module converts the second power supply output signal into a secondary power supply and then provides it for powering other single machines on the bomb.

2. A dual-power supply spring-loaded electrical system power supply circuit according to claim 1, characterized in that: The thermal battery (1) comprises a first battery stack and a second battery stack; the first battery stack is used to generate a first power supply output signal, and the second battery stack is used to generate a second power supply output signal; an isolation layer is provided between the first battery stack and the second battery stack so that the first battery stack and the second battery stack are isolated from each other and do not interfere with each other.

3. A dual-power supply spring-loaded electrical system power supply circuit according to claim 2, characterized in that: The isolation layer includes a first mica pad, a second mica pad and an asbestos pad, and the asbestos pad is sandwiched between the first mica pad and the second mica pad.

4. A dual-power supply spring-loaded electrical system power supply circuit according to claim 3, characterized in that: The first battery stack, the isolation layer, and the second battery stack are closely arranged in order from top to bottom and then packaged together.

5. A dual-power supply spring-loaded electrical system power supply circuit according to any one of claims 1 to 4, characterized in that It also includes a missile-borne controller, the second power supply output signal is connected to the missile-borne controller, and the missile-borne controller includes a power management module, which converts and distributes the second power supply output signal to supply power to other single machines in another part of the missile.

6. A dual-power supply spring-loaded electrical system power supply circuit according to claim 5, characterized in that: The missile-borne controller also includes a steering gear control module, which is used to output a drive signal to the steering gear to control the deflection of the steering gear according to the status information and steering gear command information fed back by the steering gear; the power supply and ground of the steering gear control module and the power management module are isolated from each other.

7. A dual-power supply spring-loaded electrical system power supply circuit according to claim 6, characterized in that: The onboard controller is also used to output an activation signal to the thermal battery to activate the first battery stack and the second battery stack at one time.

8. The dual-power supply spring-loaded electrical system power supply circuit according to claim 6, characterized in that: The individual units on the missile except the steering gear communicate via the missile-borne controller.

Images