CN201553112U - Automobile high-voltage power system - Google Patents

Automobile high-voltage power system Download PDF

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Publication number
CN201553112U
CN201553112U CN2009202466496U CN200920246649U CN201553112U CN 201553112 U CN201553112 U CN 201553112U CN 2009202466496 U CN2009202466496 U CN 2009202466496U CN 200920246649 U CN200920246649 U CN 200920246649U CN 201553112 U CN201553112 U CN 201553112U
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CN
China
Prior art keywords
relay
automobile
electricity
pressure
consumer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009202466496U
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Chinese (zh)
Inventor
马建新
邬学斌
邓小明
蔡文远
王可峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Publication date
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Priority to CN2009202466496U priority Critical patent/CN201553112U/en
Application granted granted Critical
Publication of CN201553112U publication Critical patent/CN201553112U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides an automobile high-voltage power system, which comprises a battery pack, a first relay, an electric device and a car charger. The battery pack, the first relay and the electric device form a loop. The power system is characterized by further comprising a second relay. The second relay after being connected with the car charger is in parallel connection with the loop formed by the first relay and the electric device. With an independent charging circuit, the power system avoids over large current flowing into the relays at the moment of powering on of the car charger, guarantees safety of the relays and the electric device, and realizes safety powering on of the car charger.

Description

Automobile high pressure using electricity system
Technical field
The utility model relates to a kind of automobile high pressure using electricity system.
Background technology
Current, because electronlmobil helps energy savings and reduce carbon-dioxide discharge capacity, thereby its research and application become one " focus " of auto-industry.
Electronlmobil is power with the vehicle power.In the high pressure using electricity system of traditional electric automobile, onboard charger often with the total wire joint of consumer, and be connected on the power brick by relay.Because onboard charger and consumer link together, the moment of cutin relay can produce a rush current using the charger charging, and excessive rush current may cause damage to relay contact or consumer.In order to address this problem, the high pressure using electricity system 100 of some electronlmobil has been introduced and has been used for relay K 2 and resistance R 1, and as shown in Figure 1, this relay K 2 and resistance R 1 series connection back are in parallel with relay K 1.Like this, when using charger electrically-charged, not direct closing relay K1, but closing relay K2 at first, thereby insert resistance R 1 and connect the electric current of moment with reduction, and then closing relay K1, and disconnect relay K 2 subsequently, like this, onboard charger 102 and consumer 101 can be started working.
Yet, though the system among Fig. 1 has reduced the electric current of relay closes moment to a certain extent, but in actual conditions, because onboard charger links together with consumer all the time, when the moment of connecting onboard charger, electric current by relay is still very big, still might damage the contact or the consumer of relay.And when onboard charger and consumer work, because the charge circuit of onboard charger and the discharge circuit of consumer be direct connection all the time, also may when work, influence each other, onboard charger or whole using electricity system are caused certain potential safety hazard.
The utility model content
The utility model is crossed by the electric current of relay at the moment of connecting onboard charger in the traditional electric automobile and may well be damaged relay contact or damage the high pressure consumer, and influence and whole using electricity system is caused the problem of potential safety hazard each other easily during the work of onboard charger and consumer, a kind of automobile high pressure using electricity system that can connect onboard charger safely, guarantee charge circuit and discharge circuit safety has been proposed.
The utility model provides a kind of automobile high pressure using electricity system, this automobile high pressure using electricity system comprises: power brick, first relay, consumer and onboard charger, power brick, first relay and consumer constitute the loop, wherein, also comprise second relay, the circuit of forming with described first relay and described consumer after described second relay and described onboard charger are in series is in parallel.
Automobile high pressure using electricity system of the present utility model, onboard charger is provided with independent charge circuit, thereby make charge circuit and discharge circuit separate, the electric current that flows through relay of also connecting consumer when preventing to connect onboard charger and causing is excessive, and in using the electrically-charged process of onboard charger, can not influence each other yet, further eliminate the potential safety hazard of consumer and even whole using electricity system with the consumer electricity consumption.
Description of drawings
Fig. 1 is the structured flowchart of traditional electric automobile high pressure using electricity system;
Fig. 2 is the block diagram according to electronlmobil high pressure using electricity system of the present utility model.
The specific embodiment
With reference now to accompanying drawing, preferred implementation is described in detail.
As shown in Figure 2, the utility model provides a kind of automobile high pressure using electricity system 200, this automobile high pressure using electricity system 200 comprises: power brick 203, first relay K 11, consumer 201 and onboard charger 202, power brick 203, first relay K 11 and consumer 201 constitute the loop, wherein, also comprise second relay K 21, the circuit of forming with described first relay K 11 and described consumer 201 after described second relay K 21 and described onboard charger 202 are in series is in parallel.
Wherein, consumer 201 can be for the consumer that inserts vehicle high voltage system by inverter, insert the consumer of vehicle high voltage system, directly insert the consumer that vehicle high voltage system uses by the DC/DC changer, such as electrical motor, electric air-conditioning etc., and any consumer that can insert vehicle high voltage system by other modes.
Preferably, automobile high pressure using electricity system 200 can also comprise that the 3rd relay K 3, the three relay K 3 are connected between the circuit parallel and described power brick 203 of described first relay K 11, consumer 201, second relay K 21, onboard charger 202 compositions.
Preferably, automobile high pressure using electricity system 200 can also comprise the 4th relay K 12 and first resistance R 11, it is in parallel after the 4th relay K 12 is connected with first resistance R 11 with first relay K 11, thereby reduce the electric current that discharge circuit is connected moment by introducing first resistance R 11, avoided infringement first relay K 11 or high pressure using electricity system.
Preferably, automobile high pressure using electricity system 200 can comprise first control unit (not shown), and this first control unit is connected with the control end of first relay K 11 and the 4th relay K 12, is used to control the break-make of first relay K 11 and the 4th relay K 12.Preferably, when first control unit receives power on command, at first make the 4th relay K 12 closures, connect first resistance R 11, when consumer 201 both end voltage reach the power brick both end voltage 90% the time, closed first relay K 11, and disconnect the 4th relay K 12 subsequently, thereby the connection discharge circuit, consumer 201 can be started working.
Preferably, automobile high pressure using electricity system 200 can also comprise the 5th relay K 22 and second resistance R 21, it is in parallel after the 5th relay K 22 is connected with second resistance R 21 with second relay K 21, thereby reduce the electric current that charge circuit is connected moment by introducing second resistance R 21, avoided infringement second relay K 21 or high pressure using electricity system.
Preferably, automobile high pressure using electricity system 200 can also comprise second control unit (not shown), this second control unit is connected with the control end of second relay K 21 and the 5th relay K 22, is used to control the break-make of second relay K 21 and the 5th relay K 22.When second control unit receives charge command, at first make the 5th relay K 22 closures, connect second resistance R 21, when onboard charger 202 both end voltage reach the power brick both end voltage 90% the time, closed second relay K 21, and disconnect the 5th relay K 22 subsequently, thus connect charge circuit, onboard charger 202 can begin to charge to power brick 203.
Preferably, automobile high pressure using electricity system 200 also can include only a control unit---the 3rd control unit, the 3rd control unit is connected with the control end of described first relay K 11 and described second relay K 21, be used to control the break-make of described first relay K 11 and described second relay K 21, wherein, when receiving the reception power on command, make first relay K, 11 closures, thereby connection discharge circuit, when receiving charge command, make second relay K, 21 closures, thereby connect charge circuit.Also comprise in the preferred implementation of the 4th relay K 12 and/or the 5th relay K 22 at automobile high pressure using electricity system 200, the 3rd control unit can also link to each other with the control end of described the 4th relay K 12 and/or described the 5th relay K 22, is used to control the break-make of the 4th relay K 12 and/or described the 5th relay K 22.The break-make mode of the break-make mode of described first relay K 11 and described the 4th relay K 12 and described second relay K 21 and described the 5th relay K 22 can be with recited above identical.
Above-mentioned power on command and charge command can be sent to first, second or the 3rd control unit by the battery management system BMS in the traditional electric automobile.This battery management system BMS is used for power brick 203 is charged, discharges, managed, safeguards automatically etc., and it can send power supply, charge command etc. based on people's operation.The use of battery management system BMS is known for a person skilled in the art, is not described in detail in this.
Because onboard charger 202 is provided with independent charge circuit, can control the connecting and disconnecting of discharge circuit and charge circuit by controlling first relay K 11 and second relay K 21 separately, thereby charge circuit and discharge circuit are separate, the electric current that flows through first relay K 11 also connecting consumer 201 when carrying charger 202 and cause of having prevented to be open to traffic is excessive, has avoided the injury to first relay K, 11 contacts.And in using onboard charger 202 electrically-charged processes, can not influence each other yet, further eliminate the potential safety hazard of consumer and even whole using electricity system with consumer 201 work.
By top description as seen, according to the automobile high pressure using electricity system of embodiment of the present utility model, by being provided with independent charge circuit, it is excessive that the moment of having avoided connecting onboard charger flows into the electric current of relay, guarantee the safety of relay and consumer, realized safe charging.

Claims (9)

1. an automobile high pressure using electricity system (200), this automobile high pressure using electricity system (200) comprises power brick (203), first relay (K11), consumer (201) and onboard charger (202), power brick (203), first relay (K11) and consumer (201) constitute a loop, it is characterized in that, also comprise second relay (K21), the circuit of forming with described first relay (K11) and described consumer (201) after described second relay (K21) and described onboard charger (202) are in series is in parallel.
2. automobile high pressure using electricity system according to claim 1 (200), wherein, this automobile high pressure using electricity system (200) also comprises the 3rd relay (K3), and described the 3rd relay (K3) is connected between the circuit parallel and described power brick (203) of described first relay (K11), consumer (201), second relay (K21) and onboard charger (202) composition.
3. automobile high pressure using electricity system according to claim 1 (200), wherein, this automobile high pressure using electricity system (200) also comprises the 4th relay (K12) and first resistance (R11), and is in parallel with described first relay K 11 after described the 4th relay (K12) is connected with described first resistance (R11).
4. automobile high pressure using electricity system according to claim 3 (200), wherein, this automobile high pressure using electricity system (200) also comprises first control unit, this first control unit is connected with the control end of described first relay (K11) with described the 4th relay (K12), is used to control the break-make of described first relay (K11) and described the 4th relay (K12).
5. automobile high pressure using electricity system according to claim 1 (200), wherein, this automobile high pressure using electricity system (200) also comprises the 5th relay (K22) and second resistance (R21), and is in parallel with described second relay (K21) after described the 5th relay (K22) is connected with described second resistance (R21).
6. automobile high pressure using electricity system according to claim 5 (200), wherein, this automobile high pressure using electricity system (200) also comprises second control unit, this second control unit is connected with the control end of described second relay (K21) with described the 5th relay (K22), is used to control the break-make of described second relay (K21) and described the 5th relay (K22).
7. automobile high pressure using electricity system according to claim 1 (200), wherein, this automobile high pressure using electricity system (200) also comprises the 3rd control unit, the 3rd control unit is connected with the control end of described first relay (K11) with described second relay (K21), is used to control the break-make of described first relay (K11) and described second relay (K21).
8. automobile high pressure using electricity system according to claim 7 (200), wherein, this automobile high pressure using electricity system (200) also comprises the 4th relay (K12) and first resistance (R11), and is in parallel with described first relay K 11 after described the 4th relay (K12) is connected with described first resistance (R11); Described the 3rd control unit also links to each other with the control end of described the 4th relay (K12), is used to control the break-make of the 4th relay (K12).
9. according to claim 7 or 8 described automobile high pressure using electricity systems (200), wherein, this automobile high pressure using electricity system (200) also comprises the 5th relay (K22) and second resistance (R21), and is in parallel with described second relay (K21) after described the 5th relay (K22) is connected with described second resistance (R21); Described the 3rd control unit also links to each other with the control end of described the 5th relay (K22), is used to control the break-make of the 5th relay (K22).
CN2009202466496U 2009-10-22 2009-10-22 Automobile high-voltage power system Expired - Lifetime CN201553112U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009202466496U CN201553112U (en) 2009-10-22 2009-10-22 Automobile high-voltage power system

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102910082A (en) * 2011-08-05 2013-02-06 微宏动力系统(湖州)有限公司 Main and auxiliary power supply switching system for electric vehicle
CN102975628A (en) * 2012-12-20 2013-03-20 中通客车控股股份有限公司 High-voltage control system of electric automobile
CN103630842A (en) * 2012-08-27 2014-03-12 微宏动力系统(湖州)有限公司 Charging detection system of battery pack
CN103847531A (en) * 2012-11-28 2014-06-11 北汽福田汽车股份有限公司 Electric car high-voltage electrical system and control method thereof
CN105128678A (en) * 2015-10-13 2015-12-09 东风汽车股份有限公司 High-voltage electrifying and discharging control system and high-voltage electrifying and discharging control method of battery electric vehicle
CN105196886A (en) * 2015-09-16 2015-12-30 北京新能源汽车股份有限公司 Battery system of electric car and state diagnosis method for high-voltage relays in battery system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102910082A (en) * 2011-08-05 2013-02-06 微宏动力系统(湖州)有限公司 Main and auxiliary power supply switching system for electric vehicle
CN102910082B (en) * 2011-08-05 2015-03-25 微宏动力系统(湖州)有限公司 Main and auxiliary power supply switching system for electric vehicle
CN103630842A (en) * 2012-08-27 2014-03-12 微宏动力系统(湖州)有限公司 Charging detection system of battery pack
CN103847531A (en) * 2012-11-28 2014-06-11 北汽福田汽车股份有限公司 Electric car high-voltage electrical system and control method thereof
CN103847531B (en) * 2012-11-28 2016-06-08 北汽福田汽车股份有限公司 A kind of electric automobile high-voltage electrical system and control method
CN102975628A (en) * 2012-12-20 2013-03-20 中通客车控股股份有限公司 High-voltage control system of electric automobile
CN102975628B (en) * 2012-12-20 2015-07-08 中通客车控股股份有限公司 High-voltage control system of electric automobile
CN105196886A (en) * 2015-09-16 2015-12-30 北京新能源汽车股份有限公司 Battery system of electric car and state diagnosis method for high-voltage relays in battery system
CN105196886B (en) * 2015-09-16 2017-10-20 北京新能源汽车股份有限公司 The battery system of electric automobile and its method for diagnosing status of mesohigh relay
CN105128678A (en) * 2015-10-13 2015-12-09 东风汽车股份有限公司 High-voltage electrifying and discharging control system and high-voltage electrifying and discharging control method of battery electric vehicle
CN105128678B (en) * 2015-10-13 2017-08-29 东风汽车股份有限公司 The upper and lower electric control system of pure electric automobile high pressure and its control method

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Granted publication date: 20100818