CN1710779A - Electric bicycle, electric motor lead-acid accumulator battery charging method - Google Patents
Electric bicycle, electric motor lead-acid accumulator battery charging method Download PDFInfo
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- CN1710779A CN1710779A CN 200510040401 CN200510040401A CN1710779A CN 1710779 A CN1710779 A CN 1710779A CN 200510040401 CN200510040401 CN 200510040401 CN 200510040401 A CN200510040401 A CN 200510040401A CN 1710779 A CN1710779 A CN 1710779A
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Abstract
Being connected to positive pole and negative pole of each battery in lead acid battery group, charger charges the lead acid battery group instead of charging connected whole lead acid battery group in series. The invention guarantees that each battery is full charged then stopped, and overcharging state will not be entered. Thus, service life of lead acid battery group is prolonged evidently.
Description
Technical field
The present invention relates to the charging method of a kind of electric bicycle, electric motor lead-acid batteries, belong to the technical field of electric bicycle, battery-operated motor cycle manufacturing and maintenance.
Background technology
Continual mileage after electric bicycle, battery-operated motor cycle once charge fully is an important quality index of electric bicycle.The consumer is obviously to reduce at the in-warranty period continual mileage to a lot of complaints of electric bicycle, battery-operated motor cycle.Such as continual mileage drops to 25km by 40km, even still less.At this moment measurement finds that the capacity of batteries also reduces accordingly, such as drops to 7Ah by specified 12Ah, even still less.
Though detected in advance the selecting of lead acid accumulator that present domestic electric bicycle, battery-operated motor cycle use have only same brand, same batch of production, and the battery of performance unanimity just is assembled into a battery pack.But the cycle life of considerable lead-acid batteries is starkly lower than the cycle life of single lead acid accumulator.The capacity that shows as batteries in the insurance period is lower than the numerical value of permission, and continual mileage is lower than the numerical value of permission.Battery detecting in the batteries of low capacity is found that the capacity of not all storage battery all descends seriously, often has only the capacity of a storage battery seriously to decay.And at present the charging method that generally adopts of electric bicycle, battery-operated motor cycle is defective, is unfavorable for the maintenance of batteries, and the capacity that can quicken batteries descends, and reduces the life-span of batteries.
At present domestic electric bicycle, the power supply of battery-operated motor cycle great majority use rated voltage to constitute as the lead acid accumulator series connection of 6V or 12V.The rated voltage of battery pack is 24V, 36V, 48V or 60V, and the lead acid storage battery pool count in the battery pack is between 2 to 10.The charging current of all batteries during charging in the lead-acid batteries all is the same.The voltage limiting value that the highest voltage limiting value of charger equals single battery multiply by the number of elements of battery in the battery pack.If several battery performance unanimities in the battery pack, the voltage that is distributed in during charging on every battery is the same, and the terminal voltage of several batteries is full of increase in time simultaneously.And in fact this ideal situation is to be difficult to realize.
Although this is because through selecting, still there is certain discreteness in the performance of several lead acid accumulators in the same battery pack.The discreteness of accumulator property shows the difference of the terminal voltage of single storage battery during charging.During to the battery charging of series connection, the terminal voltage of the battery of capacity minimum rises the fastest with same electric current, and its terminal voltage value will be higher than other batteries.At the use initial stage, the discreteness of several batteries is very little, and the difference of terminal voltage can be ignored.After using one period, it is big that discreteness becomes gradually.Just might be when charging current be big, the terminal voltage of the battery of capacity minimum rises and surpasses the voltage limiting value of single battery, enters overcharge condition.And because the rising of the terminal voltage of other several batteries is slower, the terminal voltage of whole batteries does not reach the voltage limiting value of charger.When the terminal voltage of whole batteries reaches the voltage limiting value of charger, the electrorheological of charger hour, the battery of capacity minimum has overcharged a period of time.The measurement data of capacity battery charging process on the low side has been proved the existence of the phenomenon of overcharging.Overcharge condition will be damaged battery.So move in circles, the battery of capacity minimum all experiences the process of once overcharging when charging each time.Tens times, after up to a hundred times, the battery capacity of overcharging will seriously decay, and the capacity that quickens batteries descends, even causes the capacity of whole batteries also to be lower than permissible value, and batteries does not reach expected life.
Summary of the invention
Purpose of the present invention is exactly the method that will change present this electric bicycle, electric motor lead-acid batteries serial connection charge, avoids the battery of capacity minimum is produced the phenomenon of overcharging, and causes the capacity of whole batteries to descend at last.The present invention achieves the goal like this:
(1) charger is changed into the positive and negative electrode of each storage battery with the coupled in series mode of whole lead-acid batteries connects.
(2) charger makes any in the following method into, can directly control the charge condition of each storage battery:
A. whole charger is formed (n is the number of battery cells in the batteries) by n little charger, and every little charger is in parallel with a storage battery, separately to this battery charge.Arbitrary storage battery is filled, and just turn-offs charger in parallel with it.Little charger is turned off successively, is filled until all storage batterys.
B. charger still with whole group storage battery serial connection charge.Each storage battery power switch circuit in parallel.Charging starting stage power switch circuit turn-offs.Detect the charge condition of each storage battery during charging.Arbitrary storage battery is filled, and the power switch circuit in parallel with it just is switched on.Originally just pass through, guarantee that other chargings that are not filled battery are proceeded in the batteries by the power switch circuit of parallel connection by the charging current of this storage battery.The power switch circuit in parallel of storage battery is switched on successively, is filled until all storage batterys.
C. charger still with whole group storage battery serial connection charge.Each storage battery power switch circuit in parallel.Charging starting stage power switch circuit turn-offs.Detect the charge condition of each storage battery during charging.When the voltage difference between storage battery reached a certain set point, the power switch circuit in parallel with the high battery of voltage just was switched on.Originally just pass through, guarantee that the charging of other batteries in the batteries is proceeded by the power switch circuit of parallel connection by the charging current of this storage battery.The voltage of other batteries raises gradually.When the voltage of the voltage of this storage battery and other storage batterys was identical, the power switch circuit in parallel with it just was turned off, and whole group storage battery is charged again simultaneously.Carry out so repeatedly, be filled until all storage batterys.
D. charger still with whole group storage battery serial connection charge.Each storage battery and switching circuit, inductance (or electric capacity) form series circuit in addition.Charging starting stage switching circuit turn-offs.Detect the charge condition of each storage battery during charging.When the voltage difference between storage battery reached a certain set point, the switching circuit of connecting with the high battery of voltage just was switched on.Storage battery by switching circuit to inductance (or electric capacity) energy storage.Switching circuit disconnects subsequently, and inductance (or electric capacity) discharges to low-voltage battery by other connection circuits.Like this in charging process, the energy of high-voltage battery constantly is transferred in other batteries and goes.Carry out so repeatedly, the voltage of arbitrary storage battery and the voltage difference of other storage batterys can not be higher than a certain set point all the time, are filled until all storage batterys.
The present invention has guaranteed that each battery can not enter overcharge condition owing to directly control the charge condition of each storage battery, and each battery all can be filled simultaneously.
Description of drawings
Fig. 1 be charger to electric bicycle, electric motor lead-acid batteries serial connection charge schematic diagram, Fig. 2 be charger connect with the positive and negative electrode of each storage battery the charging schematic diagram.1 is lead-acid batteries among the figure, the 2nd, and charger.In the charging method of Fig. 1, charger only links with the positive and negative electrode of whole batteries, only monitors the voltage and current of whole batteries, and the charging current of each battery all is the same.All batteries insert charging circuit simultaneously, are disconnected simultaneously.This method fault thinks that the charging voltage on each battery all is the same in the batteries, controls then.Therefore can not guarantee that every battery does not enter overcharge condition, can not guarantee that every battery all has been filled.This is the shortcoming of Fig. 1 charging method.
Fig. 2 has shown a kind of new electric bicycle, electric motor lead-acid battery charging method.In this charging method, charger directly connects the positive and negative electrode of each storage battery, detects, controls the voltage and current of each storage battery in the batteries at any time.The charging voltage of each battery and electric current may be different.If there is the terminal voltage of arbitrary storage battery to surpass the highest voltage limiting value of single battery, charger just stops the charging to this battery, but other batteries still continue charging.This has just guaranteed that each battery can not enter overcharge condition, and each battery all can be filled simultaneously.Therefore such charging method guarantees that each battery charges all the time in the electric current that allows, voltage range, can not damage battery, and the cycle life of batteries is prolonged greatly.
Embodiment
The theoretical life-span of electric bicycle, electric motor lead-acid batteries should be 300 deep discharge circulations.Original use the charging of coupled in series method, seldom have the actual life of electric bicycle, electric motor lead-acid batteries to reach the theoretical life-span.Many electric bicycles, electric motor lead-acid batteries are after 150 deep discharge circulations, and capacity has apparent in view decline, and continual mileage descends thereupon.Some batteries drops to 7Ah by specified 12Ah capacity after 200 deep discharge circulations, even still less.As this moment at lead acid accumulator in the insurance period, then the consumer that has nothing for it but of electric bicycle, battery-operated motor cycle distributors changes storage battery.The ratio of changing storage battery is sometimes near 20%.
After we use new parallel connection method charging, can both reach the theoretical life-span actual life of electric bicycle, electric motor lead-acid batteries.Electric bicycle, electric motor lead-acid batteries are after 200 deep discharge circulations, and capacity has only decline slightly, and continual mileage descends also very limited.Change the ratio of storage battery in insurance period has only about 5% at lead acid accumulator.This has improved the life-span of electric bicycle, electric motor lead-acid batteries greatly.
Claims (5)
1. the charging method of an electric bicycle, electric motor lead-acid batteries, form by lead-acid batteries, charger and control, detection system, it is characterized in that charger directly connects the positive and negative electrode of each storage battery in the lead-acid batteries, detects, controls the voltage and current of each storage battery in the batteries at any time during charging.
2. by the charging method of the described electric bicycle of claim 1, electric motor lead-acid batteries, it is characterized in that whole charger forms (n is the number of battery cells in the batteries) by n little charger, every little charger is in parallel with a storage battery, separately to this battery charge, arbitrary storage battery is filled, just turn-off charger in parallel with it, little charger is turned off successively, is filled until all storage batterys.
3. by the described electric bicycle of claim 1, the charging method of electric motor lead-acid batteries, charger and whole group storage battery serial connection charge, it is characterized in that each storage battery power switch circuit in parallel, charging just power switch circuit is turn-offed, detect the charge condition of each storage battery during charging, arbitrary storage battery is filled, the power switch circuit in parallel with it just is switched on, originally just pass through by the power switch circuit of parallel connection by the charging current of this storage battery, guarantee that other chargings that are not filled battery are proceeded in the batteries, the power switch circuit in parallel of storage battery is switched on successively, is filled until all storage batterys.
4. by claim 1 and 3 described electric bicycles, the charging method of electric motor lead-acid batteries, charger and whole group storage battery serial connection charge, it is characterized in that each storage battery power switch circuit in parallel, charging just power switch circuit is turn-offed, detect the charge condition of each storage battery during charging, it is characterized in that when the voltage difference between storage battery reaches a certain set point, the power switch circuit in parallel with the high battery of voltage just is switched on, originally just pass through by the power switch circuit of parallel connection by the charging current of this storage battery, the charging that guarantees other batteries in the batteries is proceeded, the voltage of other batteries raises gradually, when the voltage of the voltage of this storage battery and other storage batterys is identical, the power switch circuit in parallel with it just is turned off, whole group storage battery is charged again simultaneously, carry out so repeatedly, be filled until all storage batterys.
5. by the described electric bicycle of claim 1, the charging method of electric motor lead-acid batteries, charger and whole group storage battery serial connection charge, it is characterized in that each storage battery and switching circuit, inductance (or electric capacity) forms series circuit in addition, charging just switching circuit is turn-offed, detect the charge condition of each storage battery during charging, when the voltage difference between storage battery reaches a certain set point, the switching circuit of connecting with the high battery of voltage just is switched on, storage battery by switching circuit to inductance (or electric capacity) energy storage, switching circuit disconnects subsequently, inductance (or electric capacity) discharges to low-voltage battery by other connection circuits, carry out so repeatedly, the voltage of arbitrary storage battery and the voltage difference of other storage batterys can not be higher than a certain set point all the time, are filled until all storage batterys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040401 CN1710779A (en) | 2005-06-07 | 2005-06-07 | Electric bicycle, electric motor lead-acid accumulator battery charging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040401 CN1710779A (en) | 2005-06-07 | 2005-06-07 | Electric bicycle, electric motor lead-acid accumulator battery charging method |
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| CN1710779A true CN1710779A (en) | 2005-12-21 |
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| CN 200510040401 Pending CN1710779A (en) | 2005-06-07 | 2005-06-07 | Electric bicycle, electric motor lead-acid accumulator battery charging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616557A (en) * | 2013-10-29 | 2014-03-05 | 广东易事特电源股份有限公司 | A voltage detecting circuit for single batteries in a series storage battery set, a detecting method for the same, and a detecting device for the same |
| CN115514046A (en) * | 2022-09-27 | 2022-12-23 | 湖南丰日电源电气股份有限公司 | Intelligent battery life prolonging management system and battery life prolonging method |
-
2005
- 2005-06-07 CN CN 200510040401 patent/CN1710779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616557A (en) * | 2013-10-29 | 2014-03-05 | 广东易事特电源股份有限公司 | A voltage detecting circuit for single batteries in a series storage battery set, a detecting method for the same, and a detecting device for the same |
| CN115514046A (en) * | 2022-09-27 | 2022-12-23 | 湖南丰日电源电气股份有限公司 | Intelligent battery life prolonging management system and battery life prolonging method |
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