What is the difference between lithium battery charging protection board and lithium battery protect

The principle of lithium battery protection board is very simple and easy to manufacture. However, it is not easy to make it cheap, ensure quality and make money. Customer requirements should be very clear, down to component model, process requirements, voltage requirements, current requirements, output port connection, load, etc. Because you may not be able to make money because of the extra few cents per IC or the extra link in a certain process. Let's take a look at the basic knowledge you need to know to make a lithium battery protection board. The basic functions of lithium battery protection board: 1. Main technical parameters 1. Overload protection voltage (depending on the battery cell material used by the other party or customer requirements) 2 .Actual battery voltage when overcharged (depending on the battery core material used by the other party) 3. Overcurrent protection voltage (depends on customer requirements, if customer does not have one need, use the company standard) 4. Over-discharge protection voltage (select the chip solution according to the solution required by the customer) 5. Over-discharge protection voltage Discharge recovery voltage? 6. Self-consumption in normal operation 7. Self-consumption current in standby state (static operating current) 8. Short circuit protection time 9. Single cell overload voltage 10. ? Single cell 2 over discharge voltage, used for battery protection board. Main components and process boards: PCB boards, fiberglass boards, soft circuit materials for mobile phones, tablettes, digital computers, etc. Flexible board materials are more expensive and usually require a certain quantity; the processes are divided into: immersion gold, gold plating, nickel plating, spray tin, immersion tin, among which the immersion gold plating process is the most complicated and the cost is slightly more high: colors are generally divided into: green oil, black oil, butter. The thickness of the plate is generally: 0.4mm, 0.6mm, 0.8mm, 1mm, 1.2mm. FPC boards and battery protection boards are generally single-sided boards or double-sided boards. However, from a cost perspective, manufacturers have now opted for single-sided panels with a general thickness of 0.1mm and FPC boards, FPC boards. are the most expensive. Many manufacturers try their best not to make FPC boards and use PCB boards instead. -------BoardsFlexible are available between 0.5 yuan and 3 yuan. Prices vary depending on needs.