CN204349529U - Electric power system - Google Patents
Electric power system Download PDFInfo
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- CN204349529U CN204349529U CN201520048928.7U CN201520048928U CN204349529U CN 204349529 U CN204349529 U CN 204349529U CN 201520048928 U CN201520048928 U CN 201520048928U CN 204349529 U CN204349529 U CN 204349529U
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- battery pack
- relay
- voltage
- branch line
- control module
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Abstract
The utility model provides a kind of electric power system of high safety performance, it comprises several battery pack, power supply branch line, power bus, control module and monitoring modular, the power supply branch line of described battery pack all by respective is in parallel with power bus, described battery pack all arranges corresponding monitoring modular, also comprise several high-voltage connector and several relay, battery pack, high-voltage connector and relay that described every bar is powered on branch line are connected in order; Artificial battery pack is changed time avoid the arcing that produces because circuit disconnects suddenly, thus avoid getting an electric shock and the generation of fire, but also the battery pack maintenance poised state under idle state can be made, increase the service life.
Description
Technical field
The utility model discloses a kind of electric power system comprising multiple battery pack.
Background technology
Along with the enhancing of minimizing and people's environmental consciousness day by day of petroleum reserves, electric automobile is more widely used.Pure electric automobile provides the energy by on-vehicle battery group, and on-vehicle battery group is made up of several battery pack connection in series-parallel, the safe voltage that its voltage can bear considerably beyond human body, and the energy-storage system using multiple battery pack to form is like this too.So the supply line designing high safety performance for battery pack system just seems ever more important.
In prior art, battery pack is similar by several specification, and several battery pack parallel connections that particularly voltage is similar are formed, and are connected between battery pack with power bus by relay.If certain battery pack breaks down, needing the connection disconnecting this battery pack and power bus, only having the mode by disconnecting relay to be cut off, the customary means adopted when this is also and manually changes battery pack.But, from high voltage supply circuit, battery pack is disconnected and easily causes relay generation phenomenon of arc discharge, easily cause security incident.Change if artificial and also easily cause electric shock accidents.Due to the building form of battery pack, be formed by multiple less battery combination all the time, the dangerous phenomenon such as arcing, electric shock is easy to occur, and existing structural design is also difficult to avoid this type of accident.
Utility model content
The purpose of this utility model is to provide a kind of electric power system of high safety performance, it comprises several battery pack, power supply branch line, power bus, control module and monitoring modular, the power supply branch line of described battery pack all by respective is in parallel with power bus, described battery pack all arranges corresponding monitoring modular, also comprise several high-voltage connector and several relay, the battery pack that described every bar is powered on branch line, high-voltage connector and relay are connected in order, described monitoring modular detects the parameter of the battery pack of its correspondence in real time, described parameter comprises voltage, described monitoring modular by detect parameter feedback to control module, described control module controls all high-voltage connectors and relay, and wall scroll is powered, on branch line, high-voltage connector is closed before relay closes, disconnect after relay disconnects.
Monitoring modular, control module, high-voltage connector and relay are connected to each other and form vulnerabilities scan circuit, monitoring modular carries out voltage monitoring to all battery pack in electric power system, owing to being connected in parallel between battery pack, the voltage being in each battery pack in the electric power system of normal operating conditions is close, the voltage data of each battery pack is fed back to control module by monitoring modular, and control module is controlled high-voltage connector and relay by the voltage data collected.
When the voltage of the voltage and other battery pack that monitor certain battery pack occurs abnormal, under judging that electric power system is in abnormal operating state, namely certain battery pack there occurs fault, control module jointly controls high-voltage connector and relay, first relay is disconnected, battery pack is cut off from supply line, fail battery group is avoided to impact the battery pack that other normally work, then the high-voltage connector having high voltage and current to pass through is cut off, for attendant, this mode avoids the electric arc that the disconnect connector when changing battery pack produces, stop the possibility owing to battery pack to be disconnected caused electric shock from supply line.
After changing fail battery group, need to change normal battery pack, first high pressure plug connector is plugged, although battery pack has accessed supply line, but because branch line of now powering disconnects, so do not have battery pack to access suddenly the Danger Electric shock risk of supply line for attendant, control module detects battery pack access power supply branch line, control relay closes again, now battery pack has accessed power bus, complete the replacing of whole battery pack, whole process avoids the electric arc because battery pack access supply line produces, stop the generation changing in cell process phenomenon of getting an electric shock.
As preferably, arrange comparing unit in described control module, described comparing unit comprises voltage comparison unit.
In control module, voltage comparison unit is set, can compares the voltage parameter of each battery pack that monitoring means feeds back.Particularly after replacing with normal battery pack, because original electric power system may just inactively after using for a long time be carried out safeguarding, therefore the soc of original battery pack may be on the low side, relative to voltage the battery pack newly changed to not on a platform, after directly changing to new battery pack in prior art, the relatively high new battery pack of voltage can to the relatively low original batteries charging of voltage, this is for whole battery pack being very not efficiency, and can charge to electric power system after often safeguarding, reduce the useful life newly changing to battery pack.
After being provided with comparing unit in control module, even if change new battery pack, high-pressure insert is also by new battery pack access power bus, but control module makes new advances after battery pack and original battery pack have larger voltage difference by comparing unit estimation, can not direct engage relay, when the voltage of original battery pack is similar to the voltage of the battery pack newly accessed, just can close by control relay, newly will access battery pack access power bus.
As preferably, described high-voltage connector is arranged interlock low tension switch, and interlock low tension switch disconnected before high-voltage connector power section disconnects, closed before high-voltage connector power section is closed.Described high-voltage connector sends feedback signal to control module, and interlock low tension switch disconnected before high-voltage connector disconnects.
After electric power system uses a period of time, need to carry out manual maintenance to battery pack wherein.High-voltage connector arranges interlock low tension switch, what interlock low tension switch transmitted is vulnerabilities scan signal, safe for human body, as long as attendant disconnects interlock low tension switch, after control module detects that the interlock low tension switch on this power supply branch line has disconnected, control relay disconnects, and power supply branch line is disconnected from the high-tension power bus of band, avoid high-voltage connector charged, now again this battery pack is disconnected the danger that would not produce arcing or electric shock from power supply branch line.
After operations linkage low tension switch, operation behavior is fed back to control module in the mode of signal by high-voltage connector, and control module carrys out the action of further control relay according to the behavior of interlock low tension switch.
As preferably, described relay comprises pulse self-locking relay, and described pulse self-locking relay comprises Chang Kai and normally closed operating state.
Control module opening and closed branch line conducting of powering by control relay, but relay is different from the principle of high-voltage connector, relay realizes closed and conducting based on the basis of vulnerabilities scan signal, if stop input excitation current to it, relay will recover original state, disconnects the connection of battery pack.
Pulse self-locking relay only needs just can to trigger it with the pulse of certain power and opens or close, do not need the electric current continued just can keep existing state, the battery pack of prior art after long-time placement because the individual difference of battery cell or the change of environment can cause it unbalanced, employ pulse self-locking relay in supply line after, also it still can be kept to connect even if battery pack is in out-of-work state, the battery pack in electric power system is balanced mutually under condition in parallel mutually.
After the technical scheme using the utility model to provide, if the battery pack in electric power system breaks down, its change in voltage is detected by monitoring modular, and feed back to control module, relay is disconnected by control module, thus by battery pack from power supply branch line disconnect after, then control high-voltage connector disconnect, make the battery pack needing to be replaced be disconnected in time and the danger of arcing can not occur; Power supply branch line employs pulse self-locking relay, when electric power system in an idle state, can also the connection of holding circuit, prevent battery pack from unbalanced phenomenon occurring; Also the Danger Electric shock risk that the high-voltage connector that directly contact is connected brings be can avoid when using and manually safeguarding battery pack, and the deterioration of fail battery group in idle situation and the impact on other normal battery avoided.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of execution mode of electric power system disclosed in the utility model.
Execution mode
Below in conjunction with accompanying drawing, the utility model is elaborated.
Wherein 1. battery pack, 2. control module, 3. monitoring modular, 4. high-voltage connector, 5. pulse self-locking relay.
Embodiment
Embodiment 1
As shown in Figure 1, the present embodiment relates to a kind of electric power system, it comprises several battery pack 1, power supply branch line, power bus, control module 2 and monitoring modular 3, each battery pack is in parallel with power bus by respective power supply branch line, also comprise several high-voltage connector 4 and several pulse self-locking relay 5, single battery group 1, high-voltage connector 4 and pulse self-locking relay 5 are connected mutually on respective power supply branch line, the voltage parameter of the battery pack 1 corresponding to monitoring modular 3 detects in real time, monitoring modular 3 by detect parameter feedback to control module 2, control module 2 controls all high-voltage connectors 4 and pulse self-locking relay 5, and the high-voltage connector 4 that wall scroll is powered on branch line is closed before pulse self-locking relay 5 is closed, disconnect after pulse self-locking relay 5 disconnects.
Electric power system is under original operating state, and control module 2 control impuls latching relay 5 is in normally closed operating state, and this state maintains always, until wherein certain battery pack 1 breaks down or artificially stops.
Electric power system is under maintenance state, interlock low tension switch corresponding on the circuit of this battery pack 1 disconnects, after control module 2 receives feedback signal, the pulse self-locking relay 5 controlled on the power supply branch line of this battery pack 1 is in often opens operating state, now can remove fail battery group 1 safely, the danger of arcing can not occur.Then new battery pack 1 is changed, high-voltage connector 4 on the power supply branch line of this battery pack 1 correspondence connects and makes interlock low tension switch be in connection status, the pulse self-locking relay 5 that control module 2 controls on the circuit of this battery pack is in normally closed operating state, conducting is powered branch line, newly will access battery pack access power bus.
Embodiment 2
As shown in Figure 1, the present embodiment relates to a kind of electric power system, it comprises several battery pack 1, power supply branch line, power bus, control module 2 and monitoring modular 3, each battery pack is in parallel with power bus by respective power supply branch line, also comprise several high-voltage connector 4 and several pulse self-locking relay 5, single battery group 1, high-voltage connector 4 and pulse self-locking relay 5 are connected mutually on respective power supply branch line, the voltage parameter of the battery pack 1 corresponding to monitoring modular 3 detects in real time, monitoring modular 3 by detect parameter feedback to control module 2, control module 2 controls all high-voltage connectors 4 and pulse self-locking relay 5, and the high-voltage connector 4 that wall scroll is powered on branch line is closed before pulse self-locking relay 5 is closed, disconnect after pulse self-locking relay 5 disconnects, in control module 2, comparing unit is set.
Electric power system is under original operating state, and control module 2 control impuls latching relay 5 is in normally closed operating state, and this state maintains always, until wherein certain battery pack 1 breaks down or artificially stops.
Electric power system is under maintenance state, interlock low tension switch corresponding on the circuit of this battery pack 1 disconnects, after control module 2 receives feedback signal, the pulse self-locking relay 5 controlled on the power supply branch line of this battery pack 1 is in often opens operating state, now can remove fail battery group 1 safely, the danger of arcing can not occur.
Then new battery pack 1 is changed, high-voltage connector 4 on the power supply branch line of this battery pack 1 correspondence connects and makes interlock low tension switch be in connection status, now pulse self-locking relay 5 is still in and often opens operating state, the voltage of the battery pack do not changed that control module 2 detects according to monitoring modular 3, and by control module 2 comparing unit relatively after, if the voltage of the battery pack do not changed original is close with the voltage newly changing battery pack, the pulse self-locking relay 5 then controlled on the circuit of this battery pack is in normally closed operating state, conducting is powered branch line, newly will access battery pack access power bus, if the voltage of the battery pack do not changed original is larger with the voltage phase difference of newly changing battery pack, the pulse self-locking relay 5 then controlled on the circuit of this battery pack is still in often opens operating state, after the battery pack of new access is close with the voltage of original battery pack do not changed, conducting is powered branch line again, newly will access battery pack access power bus.
Claims (4)
1. an electric power system, comprise several battery pack, power supply branch line, power bus, control module and monitoring modular, described battery pack is in parallel with power bus by respective power supply branch line, described battery pack all arranges corresponding monitoring modular, it is characterized in that: also comprise several high-voltage connector and several relay, wall scroll is powered the battery pack on branch line, high-voltage connector and relay are connected in order, described monitoring modular detects the parameter of the battery pack of its correspondence in real time, described parameter comprises voltage, described monitoring modular by detect parameter feedback to control module, described control module controls all high-voltage connectors and relay, and wall scroll is powered, on branch line, high-voltage connector is closed before relay closes, disconnect after relay disconnects.
2. electric power system according to claim 1, is characterized in that: arrange comparing unit in described control module, and described comparing unit comprises voltage comparison unit.
3. electric power system according to claim 1, is characterized in that: described high-voltage connector is arranged interlock low tension switch, and interlock low tension switch disconnected before high-voltage connector power section disconnects, closed before high-voltage connector power section is closed.
4., according to the arbitrary described electric power system of claims 1 to 3, it is characterized in that: described relay comprises pulse self-locking relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048928.7U CN204349529U (en) | 2015-01-23 | 2015-01-23 | Electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048928.7U CN204349529U (en) | 2015-01-23 | 2015-01-23 | Electric power system |
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| Publication Number | Publication Date |
|---|---|
| CN204349529U true CN204349529U (en) | 2015-05-20 |
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| CN201520048928.7U Active CN204349529U (en) | 2015-01-23 | 2015-01-23 | Electric power system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932505A (en) * | 2016-07-05 | 2016-09-07 | 湖南长高电气有限公司 | Adapter box between battery pack of electric automobile and high-voltage distribution box |
| CN106549474A (en) * | 2017-01-23 | 2017-03-29 | 广东交通职业技术学院 | A kind of electric power system and vehicle |
| CN108896929A (en) * | 2018-07-26 | 2018-11-27 | 安徽锐能科技有限公司 | Method for measuring the monomer voltage of battery pack |
| CN110646745A (en) * | 2019-09-23 | 2020-01-03 | 北京交大微联科技有限公司 | Voltage monitoring circuit, method and device, power supply system and electrical equipment |
-
2015
- 2015-01-23 CN CN201520048928.7U patent/CN204349529U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932505A (en) * | 2016-07-05 | 2016-09-07 | 湖南长高电气有限公司 | Adapter box between battery pack of electric automobile and high-voltage distribution box |
| CN106549474A (en) * | 2017-01-23 | 2017-03-29 | 广东交通职业技术学院 | A kind of electric power system and vehicle |
| CN106549474B (en) * | 2017-01-23 | 2023-12-15 | 广东交通职业技术学院 | Power supply system and vehicle |
| CN108896929A (en) * | 2018-07-26 | 2018-11-27 | 安徽锐能科技有限公司 | Method for measuring the monomer voltage of battery pack |
| CN108896929B (en) * | 2018-07-26 | 2021-10-22 | 安徽锐能科技有限公司 | Method for measuring cell voltage of battery pack |
| CN110646745A (en) * | 2019-09-23 | 2020-01-03 | 北京交大微联科技有限公司 | Voltage monitoring circuit, method and device, power supply system and electrical equipment |
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