Integrated rocket-borne battery data interaction system

Abstract

The utility model discloses an integrated rocket-borne battery data interaction system, which belongs to the technical field of battery management, and comprises a box body for centrally storing a storage battery pack, and the side wall of the box body is provided with an external connection port; the acquisition board and the control board are arranged in the box body, and the control board is connected with an external measurement control system and each electric device on the rocket through an external connection port; the power devices are mounted on the box body, comprise power MOS (Metal Oxide Semiconductor) tubes, power diodes and power converters, and are arranged on the side surfaces and the bottom surface of the box body; wherein the control board, the acquisition board, the power device and the storage battery pack realize internal interconnection of power and signals through an internal interconnection cable and a bus bar, and are connected with an external connection port through a cable; the technical problems that existing ground battery management equipment cannot provide battery state information in the flight process of a rocket and is not integrally designed with a storage battery, so that too many connecting cables are connected, more space in the rocket is occupied, and testing is complex are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery management, and particularly relates to an integrated on-board battery data interaction system. Background Technique

[0002] Due to the characteristics of long cycle / storage life, high specific energy / specific power, and simple use and maintenance of lithium batteries, more and more launch vehicles are currently using lithium batteries as the on-board power supply, which is of great significance for improving the test coverage of launch vehicles and the launch vehicle's carrying capacity. The on-board battery data processing system is a technical device used to manage and monitor lithium batteries on launch vehicles. It is mainly used during rocket launch and flight to monitor and control parameters such as the charge and discharge, temperature, and voltage of lithium batteries in real time to ensure the stability and reliability of the rocket's power supply system. Such a system usually includes functional modules such as data acquisition, processing, communication, and protection.

[0003] With the wide application of lithium batteries in the field of launch vehicles, the importance of the on-board battery data processing system has become increasingly prominent. Due to characteristics such as high energy density, long life, and low maintenance requirements, lithium batteries are gradually becoming the first choice for rocket power supply systems. An efficient and reliable on-board battery data processing system can not only improve the test coverage of rockets but also significantly enhance the carrying capacity of rockets, having an important impact on the overall performance and safety of rockets.

[0004] However, there are some technical problems in the existing battery management systems:

[0005] First, the current system mainly relies on ground equipment and cannot obtain battery status information during flight after rocket launch, which limits the real-time monitoring ability of the rocket's power supply system;

[0006] Second, some systems installed on the rocket are placed separately from the storage battery, resulting in too many on-board interconnection cables, which not only increases the system complexity but also occupies valuable space inside the rocket;

[0007] Third, this separated design makes it difficult to test and integrate the lithium battery as an overall on-board power supply system, affecting the reliability and efficiency of the overall system.

[0008] In response to this, the utility model provides an on-board lithium battery data processing system that can achieve full-process monitoring, integrated design, function integration, and comprehensive protection. Content of the Utility Model

[0009] The purpose of the present utility model is to provide an integrated on - arrow battery data interaction system to solve the technical problems raised in the above - mentioned background technology, namely, the existing ground battery management equipment cannot provide battery state information during rocket flight, the non - integrated design with the storage battery leads to too many connection cables, occupies more internal space of the rocket, and the testing is complex.

[0010] To achieve the above - mentioned purpose, the present utility model provides the following technical solutions:

[0011] An integrated on - arrow battery data interaction system includes a storage battery pack and further includes:

[0012] A box body for centrally storing the storage battery pack, and an external connection port is arranged on the side wall of the box body; it is convenient for installing and protecting internal components, and at the same time realizes communication and connection with external components through the external connection port.

[0013] An acquisition board arranged in the box body for acquiring the battery state information of the storage battery pack and a control board for receiving the battery state information, and the control board is connected to an external measurement and control system and each on - arrow electrical equipment through the external connection port;

[0014] Several power devices installed on the box body, the power devices include power MOS transistors, power diodes and power converters, and the power devices are arranged on the side and bottom of the box body; they are used for processing high - power currents in the system and realizing power management and conversion functions; among them,

[0015] The control board, acquisition board, power devices and storage battery pack realize internal interconnection of power and signals through internal interconnection cables and busbars, and are connected to the external connection port through cables; realizing power and signal transmission between components, reducing external connections and improving system integration.

[0016] Preferably, a Hall element for detecting the current of the battery is arranged on the side of the box body, and a contactor for controlling the charging and discharging of the battery is arranged on the bottom of the box body.

[0017] Preferably, the control board and the acquisition board adopt bent - pin upper - board plug - ins to realize power and signal transmission; it is convenient for power and signal transmission between the control board and the acquisition board and improves connection reliability.

[0018] Preferably, the system uses a CAN bus to realize remote control and telemetry communication; providing reliable data transmission.

[0019] Preferably, a CANA isolation converter is arranged between the CAN bus and the control board; providing electrical isolation and enhancing system safety and anti - interference ability.

[0020] Preferably, the control board, acquisition board, power devices and battery pack are interconnected by welding wires; this improves the reliability and stability of the internal connections of the system.

[0021] Preferably, the control board and acquisition board are mounted on the structural frame inside the box by screws; this improves the stability and reliability of the installation; optimizes the space utilization, and uses through-hole and surface-mount components respectively to improve the integration and performance.

[0022] Preferably, the system uses a multi-layer circuit board. Through-hole components are arranged on the top surface of the circuit board, and surface-mount components are arranged on the bottom surface of the circuit board; through-hole components have stronger mechanical strength and heat dissipation performance, and surface-mount components can increase the overall component density and reduce the size of the circuit board.

[0023] Preferably, an isolated DCDC is provided on the power supply circuit of the system; it provides power isolation, enhances the system safety, and prevents interference propagation.

[0024] Preferably, it further includes a data storage. The acquisition board and the control board store data in the data storage; it can record the battery usage history, help predict the battery life, and perform fault diagnosis and analysis in case of a failure.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0026] The present utility model provides a data processing system integrated with an on-arrow lithium battery, which solves the problems that existing ground battery management devices cannot provide battery state information during rocket flight, and the lack of integration with the battery leads to excessive connection cables, more occupation of the internal space of the rocket, and complex testing, etc.; by integrating the data processing system with the on-arrow lithium battery, it realizes the provision of various autonomous control and protection functions during the whole process of rocket flight, including charge and discharge protection and over-temperature protection, etc.; internal interconnection cables and busbars are used to achieve internal interconnection of power and signals, and external connection ports are connected through cables, realizing the minimization of external connection cables of the box and simplifying the system structure; through the integrated design and compact internal layout, including arranging power devices on the side and bottom surfaces of the box and using multi-layer circuit boards, etc., the internal space of the whole system is made compact, reducing the occupation of the internal space of the rocket; by adopting power isolation design, setting CANA isolation converters and isolated DCDC, etc., the electrical safety and anti-interference ability of the system are enhanced, improving the reliability and safety during rocket flight; the acquisition board and the control board store data in the data storage; it can record the battery usage history, help predict the battery life, and perform fault diagnosis and analysis in case of a failure. Description of the Drawings

[0027] Figure 1ASchematic diagram of the preferred embodiment of the present utility model;

[0028] Figure 1B Schematic diagram of the preferred embodiment of the present utility model;

[0029] Figure 2 Circuit schematic diagram of the preferred embodiment of the present utility model.

[0030] In the figure: 1. Control board; 2. Power MOS transistor; 3. Power diode; 4. Power converter; 5. External connection port; 6. Hall element; 7. Contactor; 8. Bus bar; 9. Acquisition board. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] As shown in Figure 1 - Figure 2 shown:

[0033] An integrated on - arrow battery data interaction system, comprising:

[0034] A box body for centrally storing the battery pack 10, and an external connection port 5 is provided on the side wall of the box body; it is convenient for installing and protecting internal components, and at the same time realizes communication and connection with external components through the external connection port 5.

[0035] An acquisition board 9 disposed in the box body for acquiring the battery state information of the battery pack 10, and a control board 1 for receiving the battery state information. The control board 1 is connected to an external measurement and control system and each on - arrow electrical device through the external connection port 5; the control board 1 and the acquisition board 9 use bent - pin upper - board plug - ins to achieve power and signal transmission; it is convenient for the power and signal transmission between the control board 1 and the acquisition board 9, and improves the connection reliability. The control board 1, the acquisition board 9, power devices and the battery pack 10 are interconnected by welding wires; it improves the reliability and stability of the internal connection of the system. The control board 1 and the acquisition board 9 are installed on the structural frame in the box body by screws; it improves the installation stability and reliability; optimizes space utilization, and respectively uses plug - in and surface - mount components to improve the integration degree and performance.

[0036] Several power devices installed on the box body, the power devices include a power MOS transistor 2, a power diode 3 and a power converter 4, and the power devices are disposed on the side and bottom of the box body; used for processing high - power current in the system and realizing power management and conversion functions;

[0037] The battery pack 10 is a high-voltage battery, providing a higher energy density to meet the high-power requirements of the rocket system; the battery pack 10 is installed inside the battery pack 10 box.

[0038] A Hall element 6 for detecting the current of the battery is provided on the side of the box, and a contactor 7 for controlling the charging and discharging of the battery is provided on the bottom surface of the box.

[0039] Among them,

[0040] The control board 1, the acquisition board 9, the power devices and the battery pack 10 achieve internal interconnection of power and signals through internal interconnection cables and busbars 8, and connect to the external connection port 5 through cables to achieve power and signal transmission between components, reducing external connections and improving system integration.

[0041] The system uses the CAN bus to achieve remote control and telemetry communication, providing reliable data transmission.

[0042] The system adopts a multi-layer circuit board. Inserted components are arranged on the top surface of the circuit board, and surface-mounted components are arranged on the bottom surface of the circuit board.

[0043] Since the battery is a high-voltage battery, in order to ensure the reliability and safety during rocket testing and flight, power isolation is provided in the system, including:

[0044] I. Electrical isolation design between the command power supply and the battery: A CANA isolation converter is provided between the CAN bus and the control board 1; providing electrical isolation to enhance system safety and anti-interference ability;

[0045] The external ground control device provides a discharge contactor and / or a charge contactor on-off drive command power supply to the integrated on-board battery data interaction system through the external connection port 5, and drives the contactor to realize battery discharge output and charge input;

[0046] II. Electrical isolation design between the power supply and the internal control signal: An isolated DCDC is provided on the power supply circuit of the system. The isolated DCDC generates the secondary power required for the internal control circuit and the lower computer, providing power isolation to enhance system safety and prevent interference propagation; The command drive and telemetry circuits are centered on optocoupler devices with electrical isolation functions.

[0047] The data processing system has relatively comprehensive charge and discharge protection and over-temperature protection functions, and can provide various autonomous controls and protections throughout the ground test and rocket flight, as shown in Table 1 below:

[0048] Table 1 List of Autonomous Control and Protection Functions

[0049]

[0050]

[0051] Working principle:

[0052] During operation, the acquisition board 9 acquires data such as the temperature, current, and voltage of the battery pack 10 obtained by the sensor and transmits it to the control board 1. The control board 1 performs real-time analysis and judgment. According to the analysis results, it triggers corresponding protection mechanisms, such as disconnecting the circuit, sending an alarm signal, etc., and transmits the alarm information to the external control system through the CAN bus; the acquisition board 9 and the control board 1 store the acquisition and control information in the data storage, which can record the battery usage history, help predict the battery life, and perform fault diagnosis and analysis in case of a failure; it realizes that the system can provide battery status monitoring, autonomous control, and protection functions during the whole process of ground testing and rocket flight. At the same time, it minimizes the external connections and improves the reliability and safety of the system. The system uses a high-voltage battery as the main power source. The management and conversion of the power source are realized through devices such as the power MOS transistor 2, the power diode 3, and the power converter 4. The system adopts a power isolation design to ensure the electrical isolation between the command power source and the battery, as well as between the power supply and the internal control signal; the sampling board is responsible for acquiring information such as the voltage and temperature of the battery. The data processing board receives this information and performs data processing and status monitoring. The system can calculate, record the status independently, and support data reading; the system uses the CAN bus to realize remote control and telemetry communication and exchanges data and transmits commands with the external control system; the system realizes the charge and discharge control of the battery by controlling the discharge contactor. The external ground control device drives the contactor through the command power source to realize the control of the battery discharge output.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated arrow-borne battery data interaction system, comprising a battery pack (10), characterized in that: include: A box for centrally storing storage battery packs (10), wherein a side wall of the box is provided with an external connection port (5); A collection board (9) arranged in the box and used to collect battery status information of a storage battery pack (10), and a control board (1) used to receive the battery status information, wherein the control board (1) is connected to an external measurement control system and various electrical devices on the arrow via an external connection port (5); A plurality of power devices are installed on the box, the power devices comprising a power MOS tube (2), a power diode (3), and a power converter (4), and the power devices are arranged on the side and bottom of the box; wherein: The control board (1), the acquisition board (9), the power device and the battery pack (10) realize internal interconnection of power and signals through internal interconnection cables and bus bars (8), and are connected to the external connection port (5) through cables.

2. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: A Hall element (6) for detecting the current of the battery is arranged on the side surface of the box body, and a contactor (7) for controlling the charging and discharging of the battery is arranged on the bottom surface of the box body.

3. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: The control board (1) and the acquisition board (9) use bent-pin on-board plug-ins to achieve power and signal transmission.

4. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: The system uses CAN bus to achieve remote control and telemetry communication.

5. The integrated arrow-borne battery data interaction system according to claim 4, characterized in that: A CANA isolation converter is provided between the CAN bus and the control board (1).

6. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: The control board (1), the acquisition board (9), the power device and the battery pack (10) are interconnected by welding wires for signals.

7. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: The control panel (1) and the collection panel (9) are mounted on the structural frame in the box by means of screws.

8. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: The system adopts a multi-layer circuit board, on the top surface of which plug-in components are arranged, and on the bottom surface of which surface-mount components are arranged.

9. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: An isolated DCDC is provided on the power supply circuit of the system.

10. The integrated arrow-borne battery data interaction system according to claim 1, characterized in that: It also includes a data storage device, and the acquisition board (9) and the control board (1) store data in the data storage device.

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