In the development of modern golf cart, electric golf cart golf cart is favored by more and more people as an environmentally friendly and convenient means of transportation. In order to ensure the stability and durability of electric golf cart, a complete battery system solution is crucial. This paper will provide a practical and engineering battery system scheme, including target specifications, chemical selection, whole package design (voltage/capacity) and calculation, and BMS requirements.

I. Target specifications

1. operating voltage: Generally, the operating voltage of electric golf cart is between 48V and 72V, and the specific operating voltage is determined according to the size and power requirements of the vehicle.
2. Total capacity: the total capacity is determined according to the mileage and charging frequency of each use, generally between 100Ah and 200Ah.
3. Cycle Life: The cycle life of the battery system needs to consider the number and depth of each charge and discharge, usually between 500 and 1000 cycles.

II. Chemical selection

for electric golf cart battery systems, commonly used battery chemicals include lead-acid batteries, lithium-ion batteries and Ni-MH batteries. After considering factors such as energy density, cycle life, cost and safety, lithium ion battery is generally considered as the most suitable choice, with high energy density, long cycle life and low self-discharge rate.

III. Package design and calculation

1. battery composition: determine the battery composition according to the target specification, including the number of series and parallel connections to reach the target voltage and capacity.
2. Voltage calculation: calculate in series according to the nominal voltage and quantity of a single battery to ensure that the total voltage meets the working voltage requirements.
3. Capacity calculation: calculate based on the capacity of a single battery and the number of multiple-series connection to obtain the total capacity.
4. Safety Factor: consider the safety factor when designing to ensure the stability and safety of the battery system.

IV. BMS requirements

battery Management System (BMS) is a crucial part of battery system. Its functions include battery status monitoring, temperature control, charge and discharge protection, etc. For electric golf cart battery systems, BMS requirements include but are not limited:

1. battery Status Monitoring: monitor the voltage, capacity, temperature and other status of the battery to ensure that the battery works within a safe range.
2. Charge and discharge protection: control the charging and discharging process to avoid overcharge and overdischarge and prolong battery life.
3. Temperature control: monitor the battery temperature to avoid overheating and damage the battery and improve safety.
4. Fault Diagnosis: timely detection of batteriesSystem failure ensures safe and reliable operation of vehicles.

A complete electric golf cart battery system the scheme includes target specification determination, chemical selection, whole package design and calculation, and BMS requirements. Scientific and reasonable design and selection can ensure the stability, durability and safety of the battery system and provide reliable power support for the use of electric golf cart.