CN101719681A - Charging control circuit of quick electrical bicycle charging station - Google Patents
Charging control circuit of quick electrical bicycle charging station Download PDFInfo
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- CN101719681A CN101719681A CN200910157187A CN200910157187A CN101719681A CN 101719681 A CN101719681 A CN 101719681A CN 200910157187 A CN200910157187 A CN 200910157187A CN 200910157187 A CN200910157187 A CN 200910157187A CN 101719681 A CN101719681 A CN 101719681A
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Abstract
The invention relates to a charging control circuit of a quick electrical bicycle charging station, comprising a charging power supply anode, a charging power supply cathode, a charging relay and a controlled switching tube, wherein the charging power supply anode is connected with a normally open contact of the charging relay in series; the normally open contact is connected with an anode end of a charged battery pack; a coil of the charging relay is connected with a first charging control end through a controlled triode; a control pole of the controlled switching tube is connected with a second charging control end; the charging power supply cathode is connected with an electronic switch of the controlled switching tube in series; the electronic switch is connected with a cathode end of the charged battery pack; the anode end of the charged battery pack is provided with a voltage sensor; and the voltage sensor, the first charging control end and the second charging control end are all connected with a single chip microcomputer. The charging control circuit of a quick electrical bicycle charging station can effectively prevent over charge of batteries and has strong reliability.
Description
Technical field
The present invention relates to a kind of charging control circuit that is applied to quick electrical bicycle charging station.
Background technology
Quick electrical bicycle charging station is to utilize storage battery fast-pulse charging technique that storage battery is carried out the batch (-type) quick charge, can solve the not enough and situation about can't travel of electric weight in the electric motor car driving process fast.
Quick charge station often increases the single-chip microcomputer function on the charge power supply basis, thereby realizes functions such as charging control, the judgement of inserting coins, timing, voice suggestion and demonstration.
On the one hand, at present the battery of electric bicycle that uses constitutes batteries by one group of same battery series connection, is two types of 36V (3 joint 12V storage batterys series connection) and 48V (four save the 12V storage batterys connects) according to series connected battery joint number different the most frequently used.The charger supporting with electric motor car is the charger of 36V or is the charger of 48V.Charger with 36V can't be given the 48V batteries charging, and can cause over-charging of battery, badly damaged storage battery for the batteries charging of 36V with the charger of 48V.And each passage of quick charge station all must be able to be given 36V and two kinds of batteries chargings of 48V, can not damage battery because of overcharging again.The charger that therefore must design can adapt to the special use of 36V, two kinds of battery pack type of 48V automatically.At present many charging stations directly adopt the 48V charger to give 36V and 48V batteries charging, only provide constant current charge and do not consider constant voltage charge, adopt the method in restriction charging interval to limit the battery pack overcharge to 36V.Also have some that the voltage-limiting protection that two kinds of constant voltage circuit parameters realize 36V, two kinds of battery types of 48V then is set on charge power supply.
Summary of the invention
In order to overcome the deficiency that can not effectively prevent over-charging of battery, poor reliability of the charging control circuit that has quick electrical bicycle charging station, the invention provides a kind of direct employing 48V charger, but can effectively prevent the charging control circuit of quick electrical bicycle charging station that the 36V battery pack overcharges.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of charging control circuit of quick electrical bicycle charging station, comprise the anodal and charge power supply negative pole of charge power supply, comprise charge relay and controlled switch pipe, described charge power supply is anodal connects with the normally opened contact of described charge relay, described normally opened contact connection is recharged the battery anode end, and the coil of described charge relay connects the first charging control end by controlled triode; The control utmost point of described controlled switch pipe is connected with the second charging control end, and described charge power supply negative pole is connected in series with the electronic switch of described controlled switch pipe, and described electronic switch connects the rechargeable battery set negative pole end; Described rechargeable battery set positive terminal is provided with voltage sensor, and described voltage sensor, the first charging control end and the second charging control end all are connected with single-chip microcomputer, and described single-chip microcomputer comprises:
Voltage acquisition module in order to the signal of the described voltage sensor of real-time collection, obtains the magnitude of voltage of current battery pack;
The battery types discrimination module in order to according to detected voltage signal, judges that battery pack to be charged belongs to 36V or 48V type, and sets charging voltage limiting value separately;
The charge initiation module in order to send respectively and to go code to the first charging control end, the second charging control end, starts charging;
Voltage overcharges control module, if when being used for current magnitude of voltage and surpassing described charging voltage limiting value, sends to the second charging control end and to turn-off instruction, and time-delay Preset Time section; After judging that battery pack is extracted by the user, send the shutoff instruction to the first charging control end, stop charging; When the judgement battery pack is not extracted by the user, after the time arrival Preset Time section, go code to the second charging control end transmission.
Further, described single-chip microcomputer also comprises: battery is extracted judge module, and the voltage that is used to detect voltage sensor is greater than 60V, judges that current battery pack extracts from charging inlet.
Further again, described controlled switch pipe is a N type MOSFET pipe.
Technical conceive of the present invention is: on 48V charger basis, voltage sample by single-chip microcomputer, simple control circuit control charging, just can realize the battery pack of two types of 36V and 48V had both been realized quick charge, can control the battery charging voltage upper limit again, prevent that battery pack from overcharging.
Characteristics such as characteristics of the present invention are that circuit is simple, reliable, need not change charge power supply, and only needing increases the pressure limiting charging that a small amount of components and parts just can be realized 36V, two kinds of battery types of 48V, and the Single Chip Microcomputer (SCM) program control flow is simple.
Beneficial effect of the present invention mainly shows: 1, only needing increases few components and parts, directly adopts the charge power supply of 48V large current charge device as quick charge station; 2 can effectively prevent over-charging of battery, good reliability.
Description of drawings
Fig. 1 is quick electrical bicycle charging station charging control principle figure.
Fig. 2 is a quick electrical bicycle charging station charging control flow chart.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
See figures.1.and.2, a kind of charging control circuit of quick electrical bicycle charging station, comprise the anodal and charge power supply negative pole of charge power supply, comprise charge relay and controlled switch pipe, described charge power supply is anodal connects with the normally opened contact of described charge relay, described normally opened contact connection is recharged the battery anode end, and the coil of described charge relay connects the first charging control end by controlled triode; The control utmost point of described controlled switch pipe is connected with the second charging control end, and described charge power supply negative pole is connected in series with the electronic switch of described controlled switch pipe, and described electronic switch connects the rechargeable battery set negative pole end; Described rechargeable battery set positive terminal is provided with voltage sensor, and described voltage sensor, the first charging control end and the second charging control end all are connected with single-chip microcomputer, and described single-chip microcomputer comprises:
Voltage acquisition module in order to the signal of the described voltage sensor of real-time collection, obtains the magnitude of voltage of current battery pack;
The battery types discrimination module in order to according to detected voltage signal, judges that battery pack to be charged belongs to 36V or 48V type, and sets charging voltage limiting value separately;
The charge initiation module in order to send respectively and to go code to the first charging control end, the second charging control end, starts charging;
Voltage overcharges control module, if when being used for current magnitude of voltage and surpassing described charging voltage limiting value, sends to the second charging control end and to turn-off instruction, and time-delay Preset Time section; After judging that battery pack is extracted by the user, send the shutoff instruction to the first charging control end, stop charging; When the judgement battery pack is not extracted by the user, after the time arrival Preset Time section, go code to the second charging control end transmission.
Further, described single-chip microcomputer also comprises: battery is extracted judge module, and the voltage that is used to detect voltage sensor is greater than 60V, judges that current battery pack extracts from charging inlet.
Further again, described controlled switch pipe is a N type MOSFET pipe.
Battery voltage sampling sampling point be that the described V+ of Fig. 1 holds, for control circuit easy,
" controlled switch pipe " is connected on battery cathode, therefore when " controlled switch pipe " turn-offs, the measured voltage of " V+ " end is not battery voltage, " if relay " closure, " V+ " is the floating voltage value of " charge power supply ", have only and when " relay " disconnects, be only battery voltage value, therefore can not be directly with " V+ " as battery voltage, therefore realize voltage acquisition in the following way: when battery pack does not insert (before beginning charging), " relay " disconnects, and directly judge " V+ " value this moment, and voltage was zero when no battery inserted, in case have battery pack to insert, " V+ " value just equals battery voltage value; In charging process, " relay " is closed always, the collection of cell voltage must be carried out in " controlled switch pipe " conducting phase, as shown in Figure 2, " above magnitude of voltage " and " battery is extracted " judge module need be gathered current battery voltage, and these two modules are all carried out in " controlled switch pipe " conducting phase, therefore can think that " V+ " value just equals battery voltage.
Battery is extracted judgement and is also had problems, because after battery is extracted, charging current is zero, but relay continues to be kept closed, so the V+ terminal voltage is non-vanishing, but the charger floating voltage, on the other hand, therefore even its ceiling voltage of 48V battery pack must be lower than 60V, the battery that adopts is extracted determination methods and is: in case single-chip microcomputer detects V+ voltage greater than 60V then think that batteries extracts.Battery is extracted and is turn-offed " controlled switch pipe " and " relay " immediately, and " relay " closes " V+ " voltage of having no progeny is zero.
As shown in Figure 1, " charge power supply+" and " charge power supply-" connects the charge power supply two ends, can the accumulators group charge when " relay " moves, and sends " relay control " signal by single-chip microcomputer, by the triode control relay." controlled switch pipe " is N type field effect transistor, and charging is controlled in Single-chip Controlling " metal-oxide-semiconductor control " control " controlled switch pipe " after triode drives.Therefore, whole charging control is finished jointly by " relay control " and " metal-oxide-semiconductor control ".Do not need charge power supply is made improvements, realize two grades of voltage limit of 36V/48V by Single-chip Controlling " controlled switch pipe ".Concrete 36V/48V pressure limiting control method is described by Fig. 2 flow process.
Single-chip microcomputer only need be controlled " relay control " and " metal-oxide-semiconductor control " two pins can realize all charging and voltage-limiting protection function.Be illustrated in figure 2 as the single-chip microcomputer handling process.
The 1st step; Single-chip microcomputer does not stop to detect " V+ " point voltage value, after single-chip microcomputer detects cell voltage, thinks that battery inserts.
The 2nd step: judge battery pack type (36V or 48V battery pack) according to cell voltage, determine the charging voltage limiting value according to different battery pack then.
The 3rd step: " relay control=1 ", promptly relay closes links together charge power supply and batteries.
The 4th step: " metal-oxide-semiconductor control=1 ", promptly controlled switching tube conducting, charge power supply accumulators group charging this moment.
The 4th step: in the charging process, detect battery voltage (i.e. " V+ " voltage), when voltage surpasses definite charging voltage limiting value of the 2nd step, turn-off " controlled switch pipe " (" metal-oxide-semiconductor control=0 ") immediately, this moment, charge power supply can't be given batteries charging, this process time-delay 2 seconds, conducting after 2 seconds " controlled switch pipe " (" metal-oxide-semiconductor control=1 ").
The 5th step: judge whether battery pack is extracted by the user, then stop charging if pull out, i.e. " metal-oxide-semiconductor control=0 ", " relay control=0 ", this moment, charger and batteries interface disconnected fully.If battery pack is not extracted, then changed for the 4th step over to, continue the charging of accumulators group.
In the above-mentioned flowchart process, in case magnitude of voltage arrives the charging voltage limiting value, metal-oxide-semiconductor turn-offs immediately, charging suspends, this moment, battery voltage can descend automatically, no matter current battery voltage for how many values charges the battery immediately after 2 seconds, and is full if battery has filled, and then cell voltage can cut off " controlled switch pipe " because of arriving the charging voltage limiting value at once.So both guaranteed that battery voltage can not overcharge the damage battery, and also can replenish electricity, and used batteries are had certain repair filling full battery substantially.
Claims (3)
1. charging control circuit of quick electrical bicycle charging station, comprise the anodal and charge power supply negative pole of charge power supply, comprise charge relay and controlled switch pipe, described charge power supply is anodal connects with the normally opened contact of described charge relay, described normally opened contact connection is recharged the battery anode end, and the coil of described charge relay connects the first charging control end by controlled triode; The control utmost point of described controlled switch pipe is connected with the second charging control end, and described charge power supply negative pole is connected in series with the electronic switch of described controlled switch pipe, and described electronic switch connects the rechargeable battery set negative pole end; Described rechargeable battery set positive terminal is provided with voltage sensor, and described voltage sensor, the first charging control end and the second charging control end all are connected with single-chip microcomputer, and described single-chip microcomputer comprises:
Voltage acquisition module in order to the signal of the described voltage sensor of real-time collection, obtains the magnitude of voltage of current battery pack;
The battery types discrimination module in order to according to detected voltage signal, judges that battery pack to be charged belongs to 36V or 48V type, and sets charging voltage limiting value separately;
The charge initiation module in order to send respectively and to go code to the first charging control end, the second charging control end, starts charging;
Voltage overcharges control module, if when being used for current magnitude of voltage and surpassing described charging voltage limiting value, sends to the second charging control end and to turn-off instruction, and time-delay Preset Time section; After judging that battery pack is extracted by the user, send the shutoff instruction to the first charging control end, stop charging; When the judgement battery pack is not extracted by the user, after the time arrival Preset Time section, go code to the second charging control end transmission.
2. charging control circuit of quick electrical bicycle charging station as claimed in claim 1, it is characterized in that: battery is extracted judge module, and the voltage that is used to detect voltage sensor is greater than 60V, judges that current battery pack extracts from charging inlet.
3. charging control circuit of quick electrical bicycle charging station as claimed in claim 1 or 2 is characterized in that: described controlled switch pipe is the MOSFET pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157187A CN101719681A (en) | 2009-12-23 | 2009-12-23 | Charging control circuit of quick electrical bicycle charging station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157187A CN101719681A (en) | 2009-12-23 | 2009-12-23 | Charging control circuit of quick electrical bicycle charging station |
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| CN101719681A true CN101719681A (en) | 2010-06-02 |
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| CN200910157187A Pending CN101719681A (en) | 2009-12-23 | 2009-12-23 | Charging control circuit of quick electrical bicycle charging station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008312A (en) * | 2017-11-27 | 2018-05-08 | 广州市扬新技术研究有限责任公司 | Storage battery group state on-line measurement circuit and method |
| CN108482141A (en) * | 2018-02-10 | 2018-09-04 | 安徽三驾马车新能源科技有限公司 | A kind of Internet of Things battery truck intelligent charging system and its control method |
-
2009
- 2009-12-23 CN CN200910157187A patent/CN101719681A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008312A (en) * | 2017-11-27 | 2018-05-08 | 广州市扬新技术研究有限责任公司 | Storage battery group state on-line measurement circuit and method |
| CN108482141A (en) * | 2018-02-10 | 2018-09-04 | 安徽三驾马车新能源科技有限公司 | A kind of Internet of Things battery truck intelligent charging system and its control method |
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Open date: 20100602 |