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Please don't mark the battery12V/26AHtreat as26ALook at the current,You missed oneH!26AHIt's a unit of battery capacity,Times voltage is a unit of energy。26AIt's a unit of current,Absolutely2A concept,The ideal diode is marked with the actual working current,It's not battery capacity!In general, the actual peak current of electric vehicles will not exceed20A。Actual working current=Maximum power of motor/Battery voltage,for example1200Welectric machinery,60VBattery,What is the peak current20A。
The latest version of aluminum substrate design, smaller size, can withstand 30A current, increase MLCC capacitance and TVS absorption peak stability control circuit, more reliable, will not occur because of layout and other factors affect the output internal resistance (layout interference, etc., will cause the original 0.03V voltage drop to rise to 0.5V in the case of 10A current)
Low price sale no counter offer, thank you!
Ideal diode (must be connected to negative electrode)
Size: 41*36*10mm (the distance between the holes on both sides is 4mm) Size of large current version (Figure 3) : 50*55*10mm
Rated operating voltage: 10-100V and 10-140V two versions
Rated working current: 100V rated 40A/ Maximum 60A. For the maximum current, a heat dissipation area of more than 5cm*5cm is recommended
The rated heat dissipation area of 140V is 25A or 40A maximum. The recommended heat dissipation area for the maximum current is more than 5cm x 5cm
140V High current rated 50A/ Maximum 70A. For maximum current, the recommended heat dissipation area is more than 10cm x 10cm
-40-100℃ conduction internal resistance Rs: 100V is 1.3-1.5mΩ, 40A loss about 2.2W, 60A loss about 5W.
140V is 3.5-3.7mΩ, 25A loss is about 2.3W, 40A loss is about 5.8W.
140V high current is 1.6-1.7mΩ, 50A loss is about 4.2W, 70A loss is about 8W
No-load on-off pressure drop: 0.03V, with load pressure drop V=Rs*Iout
Static current: 200-300uA
Support on frequency 100-150hz, off faster up to 1KHZ, large current version 50-100hz.
Above this range, the loss will increase and the current needs to be derated. Please check the operating frequency for non-DC applications. For example, the output VO+ will always fluctuate and will be larger than the VIN terminal. At this time, the diode will always be in the state of on-off and off. If the frequency is too high, it will not be able to switch normally, resulting in increased heating.
It can be used as a large current step-down power supply backfilling protection, two power supply redundancy
We can design priority electronic switches that can carry capacitive loads.
The following is the test data under the more severe conditions:
Yellow is the output interface waveform, blue is the input interface waveform, the initial state of ideal diode is 50V load on-state, after 130V voltage is suddenly added to the output interface, the diode is immediately in the cut-off state, and there is no backfilling to the input interface.
As can be seen from the figure, there is only a shock of 10-20us at the moment of switching, and then smooth switching to the normal state. (Increasing capacitance in I/O interface helps to reduce the peak voltage value)
以下是推荐电动车改装方案1,仅供参考。(组装/原装可对调)
'Note 1: The voltage of the battery assembled before wiring (current battery voltage) must be less than or equal to the voltage of the original battery. In any case, the voltage of the battery rewired after removing the cable is the same. Otherwise, the circuit may be burned or even caught fire due to the excessive current of the assembled battery charging the original battery.
Note 2: the negative pole row pin on the board must be connected, not suspended, otherwise it can not play the role of ideal diode, high current working condition may burn the board.
Note 3: The standard charging voltage of the original battery and the assembled battery should be consistent to show perfect performance; If not, the standard charging voltage of the assembled battery must be greater than the original battery charging voltage (otherwise, the assembled battery will be overcharged). In addition, only when the charger is connected to the side of the original battery can the two groups of batteries be fully charged.
Note 4: It is not recommended to remove the assembled battery and charge it separately, otherwise the situation of the first point may occur. The battery capacity is increased, but the charging current of the charger remains the same. The charging time will be increased according to the capacity of the assembled battery. If the capacity is doubled, the charging time will also be doubled.
Note 5: It is recommended that the car control electricity, lighting electricity or from the original battery, that is, the ideal diode input is only connected to the assembly battery and charger!
If the standard charging voltage of the two groups of batteries is the same, the ideal diode voltage drop is only 0.03V after the two groups of batteries are full, and the filling capacity deviation caused by the voltage can be ignored
Security of Scheme 1 board:
As long as it is in accordance with the principle of the above wiring, and the two groups of battery voltage has been consistent, even if the ideal diode board is broken, it only acts as an ordinary diode, the high current board will be serious heating, in extreme cases, it is only burned down, will not affect the original car line.
After the board burned 1: the board through, the result is two groups of batteries charged each other, with no addition is the same reason, still can continue to use, but not recommended.
Situation 2: The board burns off (the appearance burns in a mess, generally will not appear), the result is that the charger can not charge the original battery, this time to check the board.
The following is recommended electric vehicle modification scheme two, for reference only.
Plan 2
Note 1: the negative pole row pin on the board must be connected, not suspended, otherwise it can not play the role of ideal diode, high current working condition may burn the board.
Note 2: Do not use the original car charging line to charge the assembled battery
3. The voltage difference between the two groups of batteries should not be too large. The voltage of the assembled battery (standard charging voltage) can be slightly higher than the voltage of the original battery (3V).
Differences between the two schemes:
Solution 1: Two groups of batteries can be charged in one direction, which may cause safety risks caused by human factors
Solution 2: Two groups of batteries are completely separated from each other and do not charge each other. There is no initial voltage requirement to avoid human hazards.
Scheme one: 1 ideal diode, assembled battery directly installed in the car, only need a charger, cost saving
Scheme two: 2 ideal diodes, assembly battery can be detachable, high flexibility, need a separate charger, high cost
Scheme One: It does not affect the detection and display of battery capacity by coulommeter or voltage detection method.
Scheme two: The assembled battery is no longer within the calculated value of the original vehicle battery count
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