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38.4V 39Ah lithium battery design scheme for emergency X-ray machine

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38.4V 39Ah lithium battery design scheme for emergency X-ray machine
Latest company news about 38.4V 39Ah lithium battery design scheme for emergency X-ray machine

38.4V 39Ah lithium battery design scheme for emergency X-ray machine

 

Foreword: In response to customer requirements, we designed an emergency power supply lithium battery based on the requirements of the power supply for field emergency X-ray machines, field ultrasound machines, power failure emergency X-ray machines, and field medical equipment. The battery pack adopts high safety, high consistency, high stability, long-life IFR26650 lithium iron phosphate batteries and imported chips, and a MOS tube for protection and control management of the battery pack. The entire battery pack has the ability to continuously work with large currents. The continuous output power can reach 1000W, and the instantaneous maximum power can reach 2KW. The battery pack can be equipped with UPS to provide emergency power supply for most medical equipment.

Design requirements
1. Lithium battery design requirements for emergency X-ray machines:
According to product specifications and customer requirements, design intelligent high-current lithium batteries that match the host, and integrate high-specification safety performance, good charge-discharge performance, high-current working capability, outstanding cycle life and other functions into the solution.

2. Design scheme of lithium battery for emergency X-ray machine:
1) Protection board (PCM): According to the chemical characteristics of the lithium iron phosphate battery and the working characteristics of the X-ray machine, the protection circuit is specifically designed. In addition to the overcharge, overdischarge, overcurrent, and short circuit protection functions, the protection board The design also fully considers the issues of high-power heat dissipation and the balance of the entire battery pack.
2) Protection circuit: Imported IC and MOS tubes are used to perform online real-time monitoring of overcharge, overdischarge, overcurrent, short circuit and other functions of the cell. Make the batteries work in a safe, stable and efficient range.
3) Overcurrent fuse: Mainly designed for secondary protection. Because the battery pack uses high-power cells with a relatively large capacity, although the battery management system has over-current and short-circuit protection, if an abnormality occurs, the protection function will fail, and a very large current will be generated in the case of output short-circuit, causing danger Occurs, so an over-current fuse is added to the scheme. When an abnormal short circuit occurs, the fuse opens the circuit and cannot be restored to achieve the purpose of abnormal protection.
4) Battery: LARGE26650/3.2V/3000mAh lithium iron phosphate battery is used. The battery has a maximum charge rate of 1C and a maximum discharge rate of 2C. The battery itself has multiple safety protection functions. The built-in battery management system can effectively avoid battery safety problems.
5) The parameters of the entire battery pack: 38.4V/39Ah (normally nominal 36V/39Ah), the normal working current is 35A, the maximum working current can reach 60A, and the instantaneous starting current can reach 100A.
6) Battery pack: Resistive balance is adopted between the cells of the battery pack, which can compensate for the reduction in capacity caused by the difference of single cells during use, and maximize the service life of the battery.

7) The battery pack uses a plastic bracket to isolate and fix the cells, which is more conducive to the heat dissipation and safe use of the battery.

 

IFR26650 3.2V 3AH  12S13P  With BMS

 

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Pub Time : 2020-12-16 17:50:39 >> News list
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