CN204775063U - Car power supply's control circuit - Google Patents
Car power supply's control circuit Download PDFInfo
- Publication number
- CN204775063U CN204775063U CN201520513257.7U CN201520513257U CN204775063U CN 204775063 U CN204775063 U CN 204775063U CN 201520513257 U CN201520513257 U CN 201520513257U CN 204775063 U CN204775063 U CN 204775063U
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- China
- Prior art keywords
- connecting device
- negative pole
- control unit
- sheet metal
- vehicle body
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- Expired - Fee Related
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Abstract
The utility model provides a car power supply's control circuit, including automobile storage battery, the load of car electrical apparatus and automobile body panel beating or frame, negative pole connecting device, the control unit and execution unit. Negative pole connecting device connects the negative connecting wire of car electrical apparatus load, negative pole connecting device still connects automobile storage battery's negative connecting wire, negative pole connecting device fixes on automobile body panel beating or frame, the control unit's first input end with automobile body panel beating or connected to the frame, the control unit's second input with negative pole connecting device connects, the control unit's output with execution unit's control end links to each other, execution unit's output links to each other with the anodal connecting wire of car electrical apparatus load, execution unit's input with the anodal of automobile storage battery links to each other. This control circuit effectively avoids car power supply line and automobile body panel beating or frame short circuit and causes circuit problem on fire, the security that improves the vehicle operation.
Description
Technical field
The utility model relates to automobile circuit field, particularly relates to a kind of control loop of automobile power source.
Background technology
Automotive safety is the content that must take into full account in automobile design, and along with the increase of automobile quantity, self-burning of vehicle accident happens occasionally, and wherein short circuit is on fire is the one of the main reasons causing self-burning of vehicle.The method of designing of current automobile circuit adopts single wire system circuit, using the metal piece such as vehicle body sheet metal or vehicle frame as public ground wire, all consumers are only connected with positive source with a wire, and the negative pole of power supply is connected with the metal piece such as vehicle body sheet metal or vehicle frame, as shown in Figure 1.That is, on automobile, the negative line of all electric appliance loads is all received on the metal piece such as vehicle body sheet metal or vehicle frame, storage battery negative polar curve is also received on vehicle body sheet metal or vehicle frame, and electric appliance load utilizes the metallic conductivity of vehicle body sheet metal or vehicle frame, forms electric power loop with battery negative post; This mode using the metal piece such as vehicle body sheet metal or vehicle frame as the public ground wire of negative pole is also referred to as minus earth.The shortcoming of the method for attachment of this automobile power source is: vehicle body sheet metal or vehicle frame are directly connected with battery negative post on the one hand, the power lead of electric appliance load is once by vehicle body sheet metal or the worn out wire insulation of vehicle frame, both positive and negative polarity will be caused to collide, form short circuit, light then fuse melting is heavy then cause on fire; Contact point on the other hand due to the assembling of automobile parts is in extensive range, and year in and year out, electrical appliance part may exist bonding bad contact, cause the hidden danger of job insecurity many, once break down, diagnoses very difficult.
Summary of the invention
The utility model provides a kind of control loop of automobile power source, the problem causing circuit on fire to avoid automobile power line and vehicle body sheet metal or vehicle frame short circuit, improves the safety that automobile uses.
For achieving the above object, the utility model provides following technical scheme:
A control loop for automobile power source, comprises automotive battery, car electrics load and vehicle body sheet metal or vehicle frame, and described automotive battery is to described car electrics load supplying; The control loop of described automobile power source also comprises: negative pole connecting device, control unit and performance element;
Described negative pole connecting device connects the negative lead of car electrics load, described negative pole connecting device also connects the negative lead of automotive battery, described negative pole connecting device is fixed on vehicle body sheet metal or vehicle frame, insulate and cut off between described negative pole connecting device and described vehicle body sheet metal or vehicle frame;
The first input end of described control unit is connected with described vehicle body sheet metal or vehicle frame, and the second input end of described control unit is connected with described negative pole connecting device, and the mouth of described control unit is connected with the control end of described performance element; Described control unit for detecting the magnitude of voltage of described vehicle body sheet metal or vehicle frame, and controls the on-off action of performance element;
The mouth of described performance element is connected with the positive lead of car electrics load, and the input end of described performance element is connected with the positive pole of described automotive battery; Described performance element is used for the connection described in break-make between automotive battery and described car electrics load.
Preferably, when described control unit detects that the magnitude of voltage of described vehicle body sheet metal or vehicle frame is greater than the voltage threshold of setting, export high level.
Preferably, described control unit comprises: double D trigger and NPN type triode, the first input end of described double D trigger is connected with vehicle body sheet metal or vehicle frame, second input end of described double D trigger is connected with described negative pole connecting device, first mouth of described double D trigger is connected with the base stage of described NPN type triode, and the power end of described double D trigger is connected with the positive pole of automotive battery; The emitter of described NPN type triode is connected with described negative pole connecting device, and the collecting electrode of described NPN type triode, as the mouth of described control unit, is connected with the control end of described performance element.
Preferably, described control unit also comprises current-limiting resistance, and one end of described current-limiting resistance is connected with the first mouth of described double D trigger, and the other end of described current-limiting resistance is connected with the base stage of described NPN type triode.
Preferably, described performance element adopts relay; One end of described relay is connected with the positive pole of automotive battery, and the other end of described relay is connected with the input end of car electrics load, and the control end of described relay is connected with the mouth of described control unit.
Preferably, described relay is normally closed relay; When described normally closed relay is in off-state, described performance element disconnects the positive lead of described car electrics load, makes described car electrics load power down; When described normally closed relay is in closure state, described performance element is communicated with the positive pole of described automotive battery and described car electrics load.
Preferably, described negative pole connecting device, comprising:
Insulcrete, is fixedly mounted on vehicle body sheet metal or vehicle frame;
Conductive plate, is fixedly mounted on described insulcrete;
Described conductive plate connects the negative lead of car electrics load and the negative lead of automotive battery respectively;
Described insulcrete is for isolating the electrical connection of described conductive plate and vehicle body sheet metal or vehicle frame.
Preferably, described insulcrete is provided with pre-embedded bolt, one end of described pre-embedded bolt is embedded in described insulcrete, and the other end of described pre-embedded bolt is outside exposed; Described pre-embedded bolt is used for fixing described conductive plate and described insulcrete, and described pre-embedded bolt, also as the terminals of described conductive plate, connects the negative lead of described car electrics load and the negative lead of described automotive battery respectively.
Preferably, described insulcrete is provided with multiple pre-embedded bolt, described pre-embedded bolt and described insulcrete perpendicular.
Preferably, described conductive plate is provided with multiple installation fixed orifice, described conductive plate, through described installation fixed orifice, is fixed on described insulcrete by described pre-embedded bolt.
The utility model provides a kind of control loop of automobile power source, negative pole connecting device is adopted to be connected with the negative lead of car electrics load and the negative pole of automotive battery respectively, described negative pole connecting device makes automotive battery not need to return through vehicle body sheet metal or vehicle frame the negative pole of storage battery to the power supply of car electrics load, when efficiently avoid automobile circuit employing single wire system circuit in prior art, using the metal such as vehicle body sheet metal or vehicle frame as public ground wire, easy appearance to rub short circuit when the power lead of car electrics load and vehicle body sheet metal or vehicle frame, cause problem on fire.Meanwhile, the voltage of control unit to vehicle body sheet metal or vehicle frame is utilized to detect, according to the connection detecting voltage control performance element break-make automotive battery and car electrics load.When the power lead of car electrics load and vehicle body sheet metal or vehicle frame rub short circuit, control unit controls performance element and disconnects automotive battery and the connection of car electrics load, cuts off automobile circuit, avoids causing on fire, raising vehicle safety.
Accompanying drawing explanation
Fig. 1 is the connection diagram of automobile power system in prior art;
Fig. 2 is the control loop schematic diagram of a kind of automobile power source that the utility model provides;
Fig. 3 is the port junction circuit schematic diagram that the utility model embodiment selects double D trigger;
Fig. 4 is the control loop schematic diagram of a kind of automobile power source that the utility model embodiment provides;
Fig. 5 is a kind of negative pole connecting device structural representation that the utility model embodiment provides.
Reference numeral
100 automotive batterys
200 performance elements
300 car electrics loads
400 negative pole connecting devices
500 vehicle body sheet metals or vehicle frame
600 control units
Detailed description of the invention
In order to the scheme making those skilled in the art person understand the utility model embodiment better, below in conjunction with drawings and embodiments, the utility model embodiment is described in further detail.
Method of designing for automobile circuit in prior art adopts single wire system circuit, using the metal piece such as vehicle body sheet metal or vehicle frame as public ground wire, easy appearance is when the power lead of car electrics load is once by vehicle body sheet metal or the worn out wire insulation of vehicle frame, will short circuit be caused, easily cause phenomenon on fire.The utility model provides a kind of control loop of automobile power source, the problem causing circuit on fire to avoid power lead and vehicle body sheet metal or vehicle frame short circuit, improves vehicle safety.
As shown in Figure 2, be the control loop schematic diagram of a kind of automobile power source that the utility model provides.This control loop comprises: automotive battery 100, car electrics load 300 and vehicle body sheet metal or vehicle frame 500, and automotive battery 100 pairs of car electrics loads 300 are powered.The control loop of described automobile power source also comprises: negative pole connecting device 400, control unit 600 and performance element 200.
Negative pole connecting device 400 connects the negative lead of car electrics load 300, negative pole connecting device 400 also connects the negative lead of automotive battery 100, negative pole connecting device 400 is fixed on vehicle body sheet metal or vehicle frame 500, insulate and cut off between negative pole connecting device 400 and described vehicle body sheet metal or vehicle frame 500.
The first input end of control unit 600 is connected with vehicle body sheet metal or vehicle frame 500; Second input end of control unit 600 is connected with described negative pole connecting device 400; The mouth of control unit 600 is connected with the control end of described performance element 200; Control unit 600 for detecting the magnitude of voltage of vehicle body sheet metal or vehicle frame 500, and controls the on-off action of performance element 200.
The mouth of performance element 200 is connected with the positive lead of car electrics load 300; The input end of performance element 200 is connected with the positive pole of described automotive battery 100; Performance element 200 is for the connection between break-make automotive battery 100 and car electrics load 300.
Further, when control unit 600 detects that the magnitude of voltage of vehicle body sheet metal or vehicle frame 500 is greater than the voltage threshold of setting, export high level.Such as optional voltage threshold is 0.7V.
In actual applications, described control unit can adopt various control elements combination to realize controlling functions, the control unit 600 such as selected can comprise: double D trigger and NPN type triode, the first input end of described double D trigger is connected with vehicle body sheet metal or vehicle frame 500, second input end of described double D trigger is connected with negative pole connecting device 400, first mouth of described double D trigger is connected with the base stage of described NPN type triode, and the power end of described double D trigger is connected with the positive pole of automotive battery 100; The emitter of described NPN type triode is connected with negative pole connecting device 400, and the collecting electrode of described NPN type triode, as the mouth of control unit 600, is connected with the control end of performance element 200.
Further, control unit 600 also comprises current-limiting resistance, and one end of described current-limiting resistance is connected with the first mouth of described double D trigger, and the other end of described current-limiting resistance is connected with the base stage of described NPN type triode.The current-limiting resistance adopted in the utility model embodiment can select 10K resistance.
It should be noted that, in actual applications, double D trigger and aerotron have Multiple Type, such as can select the double D trigger of CD4013 model, and aerotron can select 3DD102 model.As shown in Figure 3, be the port junction circuit schematic diagram that the utility model embodiment selects double D trigger.Q1 and Q1 port is the mouth of double D trigger, and VDD is power end, and CLOCK1 is first input end, CLOCK2 is the second input end, and RESET1, RESET2 are reset terminal, and D1, D2 are data terminal, and SET1, SET2 are set end, and VSS is ground terminal.Adopt CLOCK2, RESET1, RESET2, D2, SET1, SET2 and VSS port jointly to connect the second input end as double D trigger in the utility model embodiment, be connected with negative pole connecting device 400, port Q1 is connected with FPDP D1.
In practical application, described performance element 200 can select relay; One end of described relay is connected with the positive pole of automotive battery 100, and the other end of described relay is connected with the input end of car electrics load 300, and the control end of described relay is connected with the mouth of described control unit 600.
Further, described relay can adopt normally closed relay; When described normally closed relay is in off-state, performance element 200 disconnects the positive lead of car electrics load 300, makes car electrics load 300 power-off; When described normally closed relay is in closure state, performance element 200 is communicated with positive pole and car electrics 300 load of automotive battery 100.
As shown in Figure 4, be the control loop schematic diagram of a kind of automobile power source that the utility model embodiment provides.During normal work, the Q1 port output voltage of CD4013 is low level, is dragged down by the base tension of aerotron 3DD102, and aerotron 3DD102 ends, the magnet coil open circuit of normally closed relay, and normally closed relay is failure to actuate, and now, circuit is in off state.When car electrics load 300 power lead because of thump or fixing the reason such as to loosen by vehicle body sheet metal or vehicle frame 500 worn out wire insulation time, electric conductor in power lead contacts with vehicle body sheet metal or vehicle frame 500, cause vehicle body sheet metal or vehicle frame 500 charged, vehicle body sheet metal or vehicle frame 500 produce voltage, the CLOCK1 port of double D trigger CD4013 collects the voltage on vehicle body sheet metal or vehicle frame 500 by wire, the Q1 port of CD4013 is made to export high level, now aerotron 3DD102 conducting, the magnet coil energising of normally closed relay, now the contact of normally closed relay disconnects, cut off the connection of each car electrics load 300 and automotive battery 100, the power lead of car electrics load 300 is made to be in off-position, loss of voltage on vehicle body sheet metal or vehicle frame 500.According to the characteristic of double D trigger CD4013, now Q1 port can export high level always, and aerotron 3DD102 can conducting always, and namely the magnet coil of normally closed relay can be energized always, makes the contact of normally closed relay keep normally open.When trouble shooting, manually disconnect B+ connection lead, double D trigger and the normally closed device that continues are because of power-off, and will return to initial condition, namely normally closed relay returns to contact normally off, and the Q1 port of double D trigger CD4013 returns to low level state.After short circuit point failure is removed, be more manually communicated with by automotive battery positive lead, automobile power source control loop connects electricity, returns to normal working.
As shown in Figure 5, be a kind of negative pole connecting device structural representation that the utility model embodiment provides.This negative pole connecting device comprises: insulcrete and conductive plate; This insulcrete is fixedly mounted on vehicle body sheet metal or vehicle frame 3; This conductive plate is fixedly mounted on described insulcrete 1; Described conductive plate connects the negative lead of car electrics load and the negative lead of automotive battery respectively; The described positive lead of car electrics load is connected with the positive pole of automotive battery; Described insulcrete is for isolating the electrical connection of described conductive plate and vehicle body sheet metal or vehicle frame.
In realization application, multiple described negative pole connecting device can be adopted, the negative lead of car electrics load is connected, car electrics load in close scope can adopt same negative pole connecting device, in this way, automotive battery forms power-supply system loop by several described negative pole connecting device and car electrics load.Avoid car electrics single wire system in practical application, there is power lead and vehicle body sheet metal or vehicle frame short circuit and cause potential safety hazard on fire, effectively improve vehicle safety.
Described negative pole connecting device can adopt various structures form, such as, can select a kind of negative pole hookup mechanism of arcuate structure, as shown in Figure 5, is a kind of negative pole connecting device structural representation that the utility model embodiment provides.The insulcrete of described negative pole connecting device is arcuate structure, the arch top of described arcuate structure is horizontal contact face, when fixing with vehicle body sheet metal or vehicle frame, the two ends of described arcuate structure are as fixed end, and the arch top of described arcuate structure deviates from described vehicle body sheet metal or vehicle frame.Adopting the advantage of arcuate structure to be reduce the contact surface of insulcrete and vehicle body sheet metal or vehicle frame on the one hand, is the clearance space increasing power lead and vehicle body sheet metal or vehicle frame on the other hand.The conductive plate of described negative pole connecting device is slab construction, fixes with the arch top of insulcrete.
As shown in Figure 5, insulcrete is bolted on vehicle body sheet metal or vehicle frame, and insulcrete is provided with built-in fitting, for fixing described conductive plate.Such as, bolt can adopt model Q150B0B35 bolt and corresponding nut fixed insulation plate.
Further, such as, built-in fitting can select pre-embedded bolt, and one end of described pre-embedded bolt is embedded in described insulcrete, and the other end of described pre-embedded bolt is outside exposed.Pre-embedded bolt can adopt model to be the bolt of Q150B0625, in certain practical application, can select corresponding model according to the size of bolt and length.
Further, described pre-embedded bolt also can be used as the terminals of conductive plate, respectively the negative lead of connecting circuit load and the negative lead of automotive battery.
Meanwhile, in actual applications, described insulcrete can be provided with multiple pre-embedded bolt, can be used as on the one hand the terminals of the negative lead of multiple car electrics load, also can strengthen the fastness that conductive plate is fixed with insulcrete on the other hand.Described pre-embedded bolt and insulcrete perpendicular, conductive plate and insulcrete can be convenient to and fixedly mount and operate; Described conductive plate is provided with multiple installation fixed orifice, for passing described pre-embedded bolt.
Described conductive plate can adopt fine copper plate, such as, adopts the fine copper plate that 3mm is thick.It should be noted that, conductive plate also can adopt the conductive material of other material, only need have good electric conductivity and enough hardness.
Described insulcrete can adopt the insulating material of PA material, such as, and the insulating material of PA6 and PA66 material.
Structure of the present utility model, feature and action effect is described in detail above according to the embodiment shown in diagram; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change done according to conception of the present utility model; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification sheets with diagram contain spiritual time, all should in protection domain of the present utility model.
Claims (10)
1. a control loop for automobile power source, comprises automotive battery, car electrics load and vehicle body sheet metal or vehicle frame, and described automotive battery is to described car electrics load supplying; It is characterized in that, also comprise: negative pole connecting device, control unit and performance element;
Described negative pole connecting device connects the negative lead of car electrics load, described negative pole connecting device also connects the negative lead of automotive battery, described negative pole connecting device is fixed on vehicle body sheet metal or vehicle frame, insulate and cut off between described negative pole connecting device and described vehicle body sheet metal or vehicle frame;
The first input end of described control unit is connected with described vehicle body sheet metal or vehicle frame, and the second input end of described control unit is connected with described negative pole connecting device, and the mouth of described control unit is connected with the control end of described performance element; Described control unit for detecting the magnitude of voltage of described vehicle body sheet metal or vehicle frame, and controls the on-off action of performance element;
The mouth of described performance element is connected with the positive lead of car electrics load, and the input end of described performance element is connected with the positive pole of described automotive battery; Described performance element is used for the connection described in break-make between automotive battery and described car electrics load.
2. the control loop of automobile power source according to claim 1, is characterized in that, when described control unit detects that the magnitude of voltage of described vehicle body sheet metal or vehicle frame is greater than the voltage threshold of setting, exports high level.
3. the control loop of automobile power source according to claim 1, it is characterized in that, described control unit comprises: double D trigger and NPN type triode, the first input end of described double D trigger is connected with vehicle body sheet metal or vehicle frame, second input end of described double D trigger is connected with described negative pole connecting device, first mouth of described double D trigger is connected with the base stage of described NPN type triode, and the power end of described double D trigger is connected with the positive pole of automotive battery; The emitter of described NPN type triode is connected with described negative pole connecting device, and the collecting electrode of described NPN type triode, as the mouth of described control unit, is connected with the control end of described performance element.
4. the control loop of automobile power source according to claim 3, it is characterized in that, described control unit also comprises current-limiting resistance, and one end of described current-limiting resistance is connected with the first mouth of described double D trigger, and the other end of described current-limiting resistance is connected with the base stage of described NPN type triode.
5. the control loop of automobile power source according to claim 1, is characterized in that, described performance element adopts relay; One end of described relay is connected with the positive pole of automotive battery, and the other end of described relay is connected with the input end of car electrics load, and the control end of described relay is connected with the mouth of described control unit.
6. the control loop of automobile power source according to claim 5, is characterized in that, described relay is normally closed relay; When described normally closed relay is in off-state, described performance element disconnects the positive lead of described car electrics load, makes described car electrics load power down; When described normally closed relay is in closure state, described performance element is communicated with the positive pole of described automotive battery and described car electrics load.
7. the control loop of the automobile power source according to any one of claim 1 to 6, is characterized in that, described negative pole connecting device, comprising:
Insulcrete, is fixedly mounted on vehicle body sheet metal or vehicle frame;
Conductive plate, is fixedly mounted on described insulcrete;
Described conductive plate connects the negative lead of car electrics load and the negative lead of automotive battery respectively;
Described insulcrete is for isolating the electrical connection of described conductive plate and vehicle body sheet metal or vehicle frame.
8. the control loop of automobile power source according to claim 7, is characterized in that, described insulcrete is provided with pre-embedded bolt, and one end of described pre-embedded bolt is embedded in described insulcrete, and the other end of described pre-embedded bolt is outside exposed; Described pre-embedded bolt is used for fixing described conductive plate and described insulcrete, and described pre-embedded bolt, also as the terminals of described conductive plate, connects the negative lead of described car electrics load and the negative lead of described automotive battery respectively.
9. the control loop of automobile power source according to claim 8, is characterized in that, described insulcrete is provided with multiple pre-embedded bolt, described pre-embedded bolt and described insulcrete perpendicular.
10. the control loop of automobile power source according to claim 8, is characterized in that, described conductive plate is provided with multiple installation fixed orifice, and described conductive plate, through described installation fixed orifice, is fixed on described insulcrete by described pre-embedded bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513257.7U CN204775063U (en) | 2015-07-14 | 2015-07-14 | Car power supply's control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513257.7U CN204775063U (en) | 2015-07-14 | 2015-07-14 | Car power supply's control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204775063U true CN204775063U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520513257.7U Expired - Fee Related CN204775063U (en) | 2015-07-14 | 2015-07-14 | Car power supply's control circuit |
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| CN (1) | CN204775063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497970A (en) * | 2018-05-17 | 2019-11-26 | 现代自动车株式会社 | The back rest of vehicle with charge/discharge function manufactures the method for the back rest and the vehicle operating system using the back rest |
-
2015
- 2015-07-14 CN CN201520513257.7U patent/CN204775063U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497970A (en) * | 2018-05-17 | 2019-11-26 | 现代自动车株式会社 | The back rest of vehicle with charge/discharge function manufactures the method for the back rest and the vehicle operating system using the back rest |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |