source:other news release time:2023-02-17 Hits: Popular:Lithium-ion battery wholesale
Hardware composition of battery protection board system: MCU module, detection module, equilibrium module.
1. The MCU module of the battery protection board MCU is the core of the system control. The MCU used in this article is the M68HC08 series of GZ16 models. All MCUs in this series use enhanced M68HC08 central processors (CP08). The single -chip machine has the following characteristics:
(1) 8MHz internal bus frequency;
(2) The built -in Flash memory of 16KB;
(3) 2 16 -bit timer interface modules;
(4) The clock generator supports 1MHz ~ 8MHz crystal;
(5) Enhanced serial communication interface (ESCI) module.
2. In the detection module of the battery protective board, the voltage detection, current detection, and temperature detection module will be introduced separately.
(1) In this system, the single -chip machine will detect the overall voltage and single -section voltage of the battery pack. There are two methods for detection of the overall voltage of the battery pack:
(1) The dedicated voltage detection module is adopted, such as the Hall voltage sensor; The cost of using a dedicated voltage detection module is higher, and a specific power supply is also required. The process is more complicated. Therefore, the pressure of a separate circuit is used for detection. 10 The range of voltage changes in the battery pack of lithium ribs is 28V to 42V. The voltage of 3.9m? Resessive and 300K? Resessive resistance, the range of the collected voltage signal is 2V to 3V, and the corresponding AD conversion results are 409 and*. For the detection of single batteries, flying capacitance technology is mainly used.
(2) When the current sampling circuit current sampling, the parameters in the battery management system are an important basis for battery overcurrent protection. The current sampling circuit in this system is shown in Figure 2. When the battery is discharged, the current signal is detected with the Kang Copper wire, and the detected voltage signal is amplified by the differential mold to be amplified to the voltage signal of 0 to 5V to the single -chip microcomputer. If the current of the discharge is too large, the voltage signal detected by the single -chip microcomputer is relatively large, and it will drive the action of the triode to change the MOS pipe grid voltage and turn off the discharge circuit. For example, for the lithium manganate battery of 36V, the protection current is 60A. The resistance of Kang copper wire is about 5MΩ. When the current reaches 60A, the voltage of the copper wire reaches about 300mV. In order to improve the accuracy, the voltage is amplified by the amplifier 10 times to the single -chip microcomputer detection.
(3) In the process of temperature detection battery packs In the process of charging and discharge, part of the energy was released in the form of heat. This part of the heat was excluded in time to cause the battery pack to overheat. If the temperature of a single nickel -metal hydride battery exceeds 55 ° C, the battery characteristics will deteriorate, and the battery pack and discharge balance will be broken, which will cause the battery pack to permanently damage or explode. In order to prevent the above situation, real -time monitoring of the temperature of the battery pack and heat dissipation treatment are needed. The thermistor is used as a temperature sensor for temperature sampling. Thermal resistance is a thermal semiconductor resistor, which decreases with the increase in temperature.
Read recommendations:
marine battery for trolling motor Vendor
Wall Mount Rack Home Energy Battery Pack 16S2P 51.2V 100Ah Cylindrical Cell
9 Tips on How to Work Remote on the Road in 2022
Lithium Battery Assembly PACK Production Process.36 volt golf cart batteries
Last article:Battery knowledge
Next article:The type and application of the battery
related suggestion
lithium batteries for solar panels Manufacturing
2023-03-20solar power battery storage Processing
2023-04-07lithium batteries for boats wholesaler
2023-03-20solar battery for house manufacture
2023-03-20marine battery for trolling motor Manufacturing
2023-04-07solar energy storage batteries wholesaler
2023-03-20solar battery system
2023-05-08best solar generator
2023-05-08portable power station solar
2023-05-08deep cycle trolling motor battery
2023-05-08best battery for home inverter
2023-05-08portable solar power generator
2023-05-0818650 Battery Pack 11.1V Lithium Ion Battery for Light
2023-02-143600W 5120Wh solar power station lifepo4 battery portable with wheels
2023-06-07100kwh Lithium Iron Phosphate Battery Rechargeable 380V For Solar Energy Storage
2023-02-14Customizable LiFePo4 Battery for AGV Robot 60V 72V
2023-02-09Rechargeable Lithium Ion Battery Pack for Medical Device
2022-10-18Positive overcharge reaction.deep cycle marine battery Processing.solar batteries for home manufactu
2023-04-18Hysincere Battery 2023 CHINA (GERMANY) TRADE FAIR Welcome to Visit
2023-04-22Causes of lithium battery explosion
2022-10-18Why does the lithium iron phosphate battery be swollen?
2022-10-10The working principle of iron lithium batteries.solar generator amazon
2023-07-20How to do lithium battery packs in series and parallel use?12v 100ah deep cycle battery
2023-03-17The section on lithium batteries in TDG regulations.powerstation 2000 watt
2023-07-24Nickel -hydride battery electrode hydrogen alloy LANI5 advantages and disadvantages.solar energy sto
2023-05-24What conditions should lithium-ion batteries from lithium-ion battery manufacturers meet in terms of
2023-09-0426650 lithium battery general electrical performance.lithium batteries for solar panels
2023-05-20