Radar system, as an important detection equipment in modern military and civil fields, puts forward extremely high requirements on the performance of power supply system. Especially for continuous and stable work in high power pulse output and complex environment, it must rely on an efficient, safe and intelligent battery power supply scheme. This paper focuses on the 800V 150Ah radar power supply battery system, focusing on its high voltage pulse output capability (peak power 70kW) and extreme temperature control technology, and systematically expounds the design architecture, key technologies, performance indicators and application guarantees are designed to provide powerful and reliable power support for radar systems.

I. System design objectives and technical indicators

the radar power supply battery system shall meet the following core design objectives:

• high Voltage and large capacity output: the nominal voltage of the system is 800V and the capacity is 150Ah, ensuring continuous and stable energy supply.
• High power pulse output capability: it can support short-term pulse discharge with peak power reaching 70kW to meet the demand of radar pulse power.
• Extreme temperature control capability: adapt to extreme ambient temperature to ensure battery performance and safety. The temperature control range is usually required to be from-40℃ to + 65℃.
• Safety and Reliability: ensure the safe operation of the battery system under high voltage and high power conditions, and prevent thermal runaway and electrical failure.
• Intelligent management and maintenance convenience: integrated advanced battery management system (BMS) to realize real-time monitoring and intelligent diagnosis.

II. Battery system structure

the radar power supply battery system mainly consists of four parts: high energy density lithium ion battery pack, battery management system (BMS), high efficiency temperature control system and solid protective shell.

1. Lithium ion battery pack

high power lithium-ion battery monomer is selected, the single voltage is about 3.7V, and the capacity is about 10-15ah. The nominal voltage 800V and capacity 150Ah are realized through series and parallel combination. The specific configuration is as follows:

• number of series Connections: about 216 (800V / 3.7V & asynp; 216)
• number of parallel connections: about 10 groups (make sure the total capacity reaches 150Ah)

the battery unit adopts the design of high rate discharge, which supports fast discharge to meet the demand of radar pulse power. Battery cells are strictly screened to ensure the consistency of internal resistance and capacity and improve the overall performance stability.

2. Battery management system (BMS)

BMS is the core of system security and intelligence and has the following functions:

• real-time monitoring of voltage, current and temperature: dynamically adjust the working status to prevent overcharge, overdischarge, and overheating.
• High voltage pulse discharge management: monitor the peak current during pulse discharge to ensure the safety of battery cells.
• Monomer balance function: balance the battery cell voltage and prolong the battery life.
• Fault diagnosis and alarm: detect abnormal status in time and trigger protection measures.
• Data communication interface: supports real-time data interaction with radar control system to realize intelligent scheduling.

3. Extreme temperature control system

the radar power supply battery system needs to work stably in extreme temperature environment, and the design of temperature control system is very important. Solutions include:

• thermal management structure design: use high thermal conductivity materials and cooling fin to improve natural heat dissipation efficiency.
• Active Cooling Technology: air cooling, liquid cooling or phase change material cooling technology, select according to the actual environment.
• Heating device: keep the battery temperature through PTC heater or heat pump technology when the battery is low temperature.
• Multi-point temperature sensor network: monitor the temperature of each part of the battery pack in real time to achieve accurate temperature control.
• Intelligent adjustment of temperature control strategy: dynamically adjust the heating and cooling equipment working status based on the BMS data.

4. Protective shell and safety design

the shell is made of lightweight and high-strength materials, with impact resistance, waterproof and dustproof performance, and is suitable for harsh combat environment. Battery the interior adopts high insulation design and fireproof partition structure to prevent short circuit and thermal runaway spread. The overall system conforms to relevant military and industrial safety standards.

III. Analysis of key technologies

1. High voltage and high power pulse discharge technology

radar pulse operation requires instantaneous large current output. The battery system adopts low internal resistance battery monomer and optimizes the layout of battery pack to reduce the current path impedance. Meanwhile, BMS monitors the current peak value in real time to prevent overload. The system supports 70kW peak pulse power to ensure high radarWork effectively.

2. Extreme environment temperature control technology

for low temperature environment, the battery capacity and power output will decrease significantly, and the temperature control system maintains the battery temperature in the optimal working interval through the heating device to ensure the performance. Under high temperature conditions, the active cooling system quickly takes away heat to avoid the risk of thermal runaway. The temperature control system works together with BMS to realize intelligent temperature management.

3. Security redundancy protection design

use multiple security protection mechanisms, including hardware circuit breakers, fuses, thermo sensitive switch, etc., and cooperate with BMS software protection policies to ensure quick power cut off in abnormal situations and ensure the safety of personnel and equipment.

4. Intelligent battery management system (BMS)

BMS integrates multi-sensor data and uses advanced algorithms for health assessment and life prediction. At the same time, it supports remote monitoring and maintenance to improve the intelligence level and maintenance efficiency of the system.

IV. Performance advantages and practical application guarantee

• high energy and high power: satisfy radarThe system requires both continuous power supply and instantaneous high power pulse.
• Extreme temperature control ensures stability: effectively solve the problem of battery performance attenuation in high temperature and low temperature environment, and ensure the reliable work of radar system all day long.
• High security: multiple protection design and intelligent monitoring significantly reduce security risks.
• Easy maintenance: modular design and intelligent diagnosis can shorten maintenance time and improve system availability.
• Strong compatibility: standardized interface design for easy integration with different radar systems.

The power supply battery system scheme of 800V 150Ah radar realizes the efficient support of 70kW peak power of radar system and stable operation guarantee in extreme environment through high voltage and high power design, advanced temperature control technology and intelligent management. The system has reasonable structure, safety and reliability, good adaptability and convenient maintenance, can meet the power demand of harsh radar operating environment, and provide a solid power Foundation for the continuous and efficient operation of radar system.