CN104986042A - High-voltage system fault detection method and device - Google Patents
High-voltage system fault detection method and device Download PDFInfo
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- CN104986042A CN104986042A CN201510315278.2A CN201510315278A CN104986042A CN 104986042 A CN104986042 A CN 104986042A CN 201510315278 A CN201510315278 A CN 201510315278A CN 104986042 A CN104986042 A CN 104986042A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a high-voltage system fault detection method. A high-voltage system comprises at least one electric energy transmission circuit. A fuse is arranged on each electric energy transmission circuit. The method comprises the steps that detected states of the fuses are obtained; according to the states of the fuses, whether the electric energy transmission circuits where the fuses are arranged break down or not is judged; and when the electric energy transmission circuits break down, a whole vehicle is controlled according to preset control strategies corresponding to the electric energy transmission circuits so as to ensure the safety of the vehicle. According to the high-voltage system fault detection method, the control strategies corresponding to the electric energy transmission circuits are matched with the electric energy transmission circuits, refining control is performed for the different electric energy transmission circuits by adopting the different control strategies, and the control strategies of the whole vehicle are more reasonable and user-friendly. In addition, the invention further provides a high-voltage system fault detection device.
Description
Technical field
The present invention relates to battery-driven car field of fault detection, particularly relate to a kind of high-pressure system fault detection method for battery-driven car and device.
Background technology
Battery-driven car refers to that vehicle power is power, uses electrical energy drive wheels travel, meets the vehicle of the requirements such as arteries of communication, legislative control on safety.
In order to ensure the safety that elec. vehicle travels, need to carry out fault detection to the high-pressure system of elec. vehicle inside.
The high-pressure system method of inspection of prior art can detect position of fault and outwards can send alarm after fault being detected.But, for the battery-driven car run, if only carry out testing and alarm to fault, reliably vehicle safety can not be ensured.
Summary of the invention
In view of this, the invention provides a kind of high-pressure system fault detection method and device, to improve the safety of elec. vehicle.
In order to reach foregoing invention object, present invention employs following technical scheme:
A kind of high-pressure system fault detection method, described high-pressure system comprises at least one road delivery of electrical energy circuit, and described delivery of electrical energy circuit is configured with fuse, and described method comprises:
Obtain the state detecting the fuse obtained;
The delivery of electrical energy circuit at fuse place whether et out of order according to the condition adjudgement of described fuse;
When described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
Alternatively, described delivery of electrical energy circuit is configured with fuse check point, detects the state of described fuse, specifically comprise:
Control the fuse check point on delivery of electrical energy circuit described in gating;
Judge whether the contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
Second conversion is carried out to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
Alternatively, described high-pressure system comprises multiple way electric transmission route, and the state detecting described fuse specifically comprises: detect the fuse state on delivery of electrical energy circuit described in all each roads.
Alternatively, delivery of electrical energy circuit described in every road is configured with fuse check point, the fuse state on delivery of electrical energy circuit described in all each roads of described detection, specifically comprises:
Steps A, according to the fuse check point on the delivery of electrical energy circuit of default time schedule control gating one road;
Step B, judge current gating fuse check point place delivery of electrical energy circuit on contactless switch whether be in attracting state, if so, perform step C, if not, perform step D;
Step C, the state of the fuse on the delivery of electrical energy circuit at the fuse check point place of current gating to be detected;
Step D, according to the fuse check point on next road delivery of electrical energy circuit of default timing strobe, and using the fuse check point of the fuse check point on next road delivery of electrical energy circuit described as current gating, return and perform described step B.
Alternatively, described step C specifically comprises:
Receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
Second conversion is carried out to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
Alternatively, when electrokinetic cell DC bus et out of order, described when described delivery of electrical energy line failure, the control survey corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described electrokinetic cell DC bus et out of order, control parking lamp and open;
When described delivery of electrical energy circuit is steering pump branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message information of described steering pump branch road et out of order, control drive motor falls turns round to carry out Control for Speed Limitation to car load;
When described delivery of electrical energy circuit is Air compressor branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described Air compressor branch road et out of order, control drive motor falls turns round to carry out Control for Speed Limitation to car load;
When described delivery of electrical energy circuit is DC-DC branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described DC-DC branch road et out of order, close low voltage equipment;
When described delivery of electrical energy circuit is air-conditioning branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described air-conditioning branch road et out of order; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell;
When described delivery of electrical energy circuit is charging paths; Described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described charging paths et out of order, terminate current charging work.
A kind of high-pressure system failure detector, described high-pressure system comprises at least one road delivery of electrical energy circuit, and described delivery of electrical energy circuit is configured with fuse, and described device comprises:
Acquisition module, for obtaining the state detecting the fuse obtained;
Judge module, for the delivery of electrical energy circuit whether et out of order at fuse place according to the condition adjudgement of described fuse;
Control module, for when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
Alternatively, described delivery of electrical energy circuit is configured with fuse check point, the state of described fuse is detected by fuse state detecting device and obtains, and described fuse state detecting device comprises:
Control gating unit, for controlling the fuse check point on delivery of electrical energy circuit described in gating;
Receiving element, when contactless switch on the delivery of electrical energy circuit at the fuse check point place when current gating is in attracting state, the fuse receiving current gating detects the analog voltage pointed out, and described analog voltage carries out the first conversion to the voltage at fuse check point place electrokinetic cell being outputted to described current gating and process obtains;
Converting unit, for carrying out the second conversion to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
Alternatively, described high-pressure system comprises multiple way electric transmission route, delivery of electrical energy circuit described in every road is configured with fuse check point, the state of described fuse is detected by fuse state testing circuit, and described fuse state testing circuit comprises: power management module, CAN communication circuit and interface, microcontroller, voltage sensor metering circuit, fuse gating circuit and contactless switch state detection circuit;
Described power management module is used for input voltage to be converted to described CAN communication circuit and interface, described microcontroller, described voltage sensor metering circuit, described fuse gating circuit and the operating voltage needed for described contactless switch state detection circuit;
Described fuse gating circuit is for according to the fuse check point on delivery of electrical energy circuit described in each road of default timing strobe;
Whether described contactless switch state detection circuit is in attracting state for the contactless switch detected on delivery of electrical energy circuit described in each road;
The voltage that described voltage sensor metering circuit is used for outputting to electrokinetic cell the fuse check point place of current gating carries out the first conversion and process, obtain the analog voltage at the fuse check point place of current gating, and described analog voltage is delivered to described microcontroller;
Described microcontroller is for according to the fuse check point on delivery of electrical energy circuit described in each road of fuse gating circuit gating described in default time schedule control; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, receive the analog voltage at the fuse check point place of current gating; Second conversion is carried out to described analog voltage, obtain the state of the fuse on the delivery of electrical energy circuit of current gating, the state of described fuse is sent to high-pressure system failure detector by described CAN communication circuit and interface, to make the delivery of electrical energy circuit whether et out of order at described high-pressure system failure detector fuse place according to the condition adjudgement of described fuse; When described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
Alternatively, described control module comprises: the first control submodule, second controls at least one in submodule, the 3rd control submodule, the 4th control submodule, the 5th control submodule and the 6th control submodule;
Described first controls submodule for sending the alarm message of described electrokinetic cell DC bus et out of order, controls parking lamp and opens;
Described second controls submodule for sending the alarm message information of described steering pump branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 3rd controls submodule for sending the alarm message of described Air compressor branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 4th controls submodule for sending the alarm message of described DC-DC branch road et out of order, closes low voltage equipment;
Described 5th controls submodule for sending the alarm message of described air-conditioning branch road et out of order; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell;
Described 6th controls submodule for sending the alarm message of described charging paths et out of order, terminates current charging work.
Compared to prior art, the present invention has following beneficial effect:
High-pressure system fault detection method provided by the invention, when delivery of electrical energy line failure, according to the control policy corresponding with described delivery of electrical energy circuit pre-set, car load being controlled, as carried out Control for Speed Limitation to vehicle, thus ensureing the safety of vehicle.Compared to prior art, in method of inspection provided by the invention, when delivery of electrical energy line failure, the control policy corresponding with this delivery of electrical energy circuit can be adopted to control car load, thus can ensure the safety of vehicle.And in the present invention, the control policy that delivery of electrical energy circuit is corresponding and delivery of electrical energy circuit match, and for different delivery of electrical energy circuits, take different control policies to carry out refinement control, make the control policy of car load more rationally, hommization more.
Accompanying drawing explanation
In order to be expressly understood technical scheme of the present invention, the accompanying drawing used when describing the specific embodiment of the present invention is done a brief description below, apparently, these accompanying drawings are only section Example of the present invention, those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing.
The structural representation of the high-pressure system of elec. vehicle during Fig. 1;
Fig. 2 is the schematic flow sheet of the high-pressure system fault detection method that the embodiment of the present invention provides;
Fig. 3 is the schematic flow sheet of the method for inspection of fuse state on the road delivery of electrical energy circuit that provides of the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the method for inspection of fuse state on the multiple way electric transmission route that provides of the embodiment of the present invention;
Fig. 5 is the structural representation of the fuse state testing circuit that the embodiment of the present invention provides;
Fig. 6 is the structural representation of the high-pressure system failure detector that the embodiment of the present invention provides;
Fig. 7 is the structural representation of the fuse state detecting device that the embodiment of the present invention provides.
Detailed description of the invention
For making object of the present invention, technological means and technique effect clearly complete, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
It should be noted that, technical scheme provided by the invention is the safety in order to battery-driven car, and therefore, high-pressure system fault detection method provided by the invention is applicable to electric automobiles.
Fig. 1 is the structural representation of the high-pressure system of elec. vehicle.As shown in Figure 1.This high-pressure system comprises electrokinetic cell 101 and high-tension distribution box 102, high-tension distribution box 102 is as the allocation units of car load energy, for power distribution that power supply is exported to each road delivery of electrical energy circuit, high-pressure system shown in Fig. 1 comprises 6 road delivery of electrical energy circuit r1 to r6, every road delivery of electrical energy circuit is all configured with fuse 103 and contactless switch 104, and is connected with different consumers as motor 105, steering pump 106, Air compressor 107, storage battery 108, electric air-conditioning 109 and storage battery 110 etc. at the mouth of different delivery of electrical energy circuit.In addition, the DC bus R of electrokinetic cell 101 is also configured with fuse 103 and contactless switch 104.In embodiments of the present invention, delivery of electrical energy circuit and electrokinetic cell DC bus are referred to as delivery of electrical energy circuit.In other words, in embodiments of the present invention, delivery of electrical energy circuit comprises electrokinetic cell DC bus and Ge Lu delivery of electrical energy circuit.
Wherein, fuse 103 can carry out overcurrent and short trouble protection to its place delivery of electrical energy circuit; fuse 103 has conducting and fusing two states; when fuse is in conducting state; fuse place delivery of electrical energy line work is normal; when fuse is in blown state, fuse place delivery of electrical energy line failure.Therefore, its place delivery of electrical energy circuit whether et out of order and then fault detection is carried out to high-pressure system can be judged by the state of fuse.
High-pressure system fault detection method provided by the invention to judge on delivery of electrical energy circuit whether et out of order by detecting the fuse state be configured on delivery of electrical energy circuit.Specifically see following examples.
Fig. 2 is the schematic flow sheet of the high-pressure system fault detection method that the embodiment of the present invention provides.As shown in Figure 2, the method comprises the following steps:
The state of the fuse that S201, acquisition detection obtain:
First, it should be noted that, the high-pressure system described in the embodiment of the present invention comprises at least one road delivery of electrical energy circuit, and every road delivery of electrical energy circuit is all configured with fuse check point, and under normal circumstances, this fuse check point is positioned at the downstream of fuse.
In embodiments of the present invention, as shown in Figure 3, the state detecting fuse specifically comprises:
S201a, the fuse check point controlled on delivery of electrical energy circuit described in gating;
It should be noted that, in embodiments of the present invention, control the fuse check point that fuse gating circuit utilizes high pressure optocoupler to come on gating delivery of electrical energy circuit.
S201b, judge current gating fuse check point place delivery of electrical energy circuit on contactless switch whether be in attracting state; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, perform step S201c.
Step S201c, receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
It should be noted that, for the ease of measuring, under normal circumstances, needing the high pressure at the fuse check point place according to the relation between high pressure and analog voltage, electrokinetic cell being outputted to current gating to be converted to lower analog voltage.Then, carrying out the analog voltage be converted to, as the process of filtering, denoising and so on, finally obtaining analog voltage.
Step S201d, the second conversion is carried out to described analog voltage, obtain the state of the fuse on the delivery of electrical energy circuit of current gating.
Second conversion is carried out to described analog voltage, thus analog voltage is converted to the high pressure that electrokinetic cell corresponding with it outputs to the fuse check point place on the delivery of electrical energy circuit of current gating.The high-voltage value that this electrokinetic cell outputs to the fuse check point place of current gating can reflect the state of the fuse on the delivery of electrical energy circuit of this current gating.This is because when the fuse of delivery of electrical energy circuit is in conducting state, electrokinetic cell can by the voltage transmission of distribution to fuse check point, and thus, now, the voltage at this fuse check point place is in range of normal value.Wherein, range of normal value is the scope being assigned to the magnitude of voltage on this delivery of electrical energy circuit how much determined by the electricity of electrokinetic cell.
Otherwise when the fuse of delivery of electrical energy circuit is in blown state, electrokinetic cell can not by the voltage transmission of distribution to fuse check point, and thus, now, it is very little that this fuse detects the magnitude of voltage pointed out.
Therefore, analog voltage is carried out the second conversion by this step, thus analog voltage is converted to the high pressure that electrokinetic cell corresponding with it outputs to the fuse check point place of current gating.The state of the fuse on the delivery of electrical energy circuit of current gating can be obtained according to this high-voltage value.Specifically, when high-voltage value is in normal range, the fuse on the delivery of electrical energy circuit of this current gating is in conducting state, and when high-voltage value is not in normal range, the fuse on the delivery of electrical energy circuit of this current gating is in blown state.
S202, according to the condition adjudgement of described fuse the delivery of electrical energy circuit whether et out of order at fuse place:
When fuse is in conducting state, show that the delivery of electrical energy circuit at fuse place is normal, non-et out of order, when fuse is in blown state, shows the delivery of electrical energy line failure at fuse place.
S203, when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle:
It should be noted that, in embodiments of the present invention, be previously provided with the control policy that different delivery of electrical energy circuit is corresponding, with after delivery of electrical energy circuit breaks down, the control policy according to this correspondence controls car load.
In addition, because the effect at different delivery of electrical energy circuit is different, the influence degree run the car load of battery-driven car is different, so the control policy that different delivery of electrical energy circuit is corresponding is also different.Further, under normal circumstances, the high-pressure system with drive motor branch road, steering pump branch road, Air compressor branch road, DC-DC branch road, air-conditioning branch road and charging paths can meet the need for electricity of general battery-driven car, therefore, based on the concrete structure of this high-pressure system, above-mentioned steps S203 can be specific as follows:
When electrokinetic cell DC bus et out of order, then car load is out of service, described when described delivery of electrical energy line failure, and the control survey corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprise:
The instrument face plate of vehicle shows current failure, so that quick position trouble point, improves maintenance efficiency, automatically open parking lamp simultaneously, other vehicle is pointed out.
When described delivery of electrical energy circuit is steering pump branch road, then the steering swivel system of battery-driven car loses power-assisted, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprise:
Instrument face plate shows the failure message of described steering pump branch road, drive electrode is fallen simultaneously and turn round control, to carry out Control for Speed Limitation to car load, ensure that car load can reach repair location safely and overhaul;
When described delivery of electrical energy circuit is Air compressor branch road, then car load loses braking force source, the residual gas in storage tank is only relied on to compress into row braking, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprise:
Instrument face plate shows the failure message of described Air compressor branch road, and control drive motor falls and turns round to carry out Control for Speed Limitation to car load simultaneously, ensures that car load is when braking less as far as possible, drives to safety zone and overhauls;
When described delivery of electrical energy circuit is DC-DC branch road, car load low-pressure system only relies on the dump energy in storage battery to carry out work, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprise:
Instrument face plate shows the failure message of described DC-DC branch road, closedown audio-visual devices etc. are not with the low voltage equipment of necessity simultaneously, prompting chaufeur reduces the use of the equipment such as inessential signal lamp, rain brush, to improve the cruise duration of storage battery, ensure that car load is when the non-power-off of low-pressure system, drives to safety zone and overhauls;
When described delivery of electrical energy circuit is air-conditioning branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Instrument face plate shows the failure message of described air-conditioning branch road, and prompting chaufeur keeps in repair in time; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell; Small area analysis discharge and recharge ensures car load safe in operation on the one hand, ensures that battery has longer life on the other hand.
When described delivery of electrical energy circuit is charging paths; Described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Instrument face plate shows the failure message of described charging paths, sends the request message stopping charging simultaneously to BMS, disconnect charging paths contactless switch fast, terminate current charging work.
It should be noted that, in embodiment described above, outwards send fault alarm information by the mode showing failure message on instrument face plate.As the expansion of the embodiment of the present invention, the mode outgoing of voice broadcast can also be adopted to be out of order alarm message.In addition, the present invention can also adopt alternate manner outwards to send alarm.Will not enumerate at this.
Be high-pressure system fault detection method that the embodiment of the present invention provides above.In method of inspection provided by the invention, when delivery of electrical energy line failure, the control policy corresponding with this delivery of electrical energy circuit can be adopted to control car load, thus can ensure the safety of vehicle.And in the present invention, the control policy that delivery of electrical energy circuit is corresponding and delivery of electrical energy circuit match, for different delivery of electrical energy circuits, take the control that different control policies carries out effectively and reasonably, make the control policy of car load more rationally, hommization more, drastically increase car load run and parking process of charging in safety.
In addition, as shown in Figure 1, the delivery of electrical energy circuit in high-pressure system generally includes electrokinetic cell DC bus and multiple way electric transmission route.In order to detect the fault of high-pressure system all sidedly, preferably the fuse state on the delivery of electrical energy circuit of all each roads is detected.
As a specific embodiment of the present invention, as shown in Figure 4, described fuse state on the delivery of electrical energy circuit of all each roads to be detected, specifically comprises:
S401, according to the fuse check point on the delivery of electrical energy circuit of default time schedule control gating one road;
S402, judge current gating fuse check point place delivery of electrical energy circuit on contactless switch whether be in attracting state, if so, perform step S403, if not, perform step S404;
S403, the state of the fuse on the delivery of electrical energy circuit at the fuse check point place of current gating to be detected;
The state of the fuse on the delivery of electrical energy circuit at the described fuse check point place to current gating detects, and is specially:
Receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
Second conversion is carried out to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
S404, according to the fuse check point on next road delivery of electrical energy circuit of default timing strobe, and using the fuse check point of the fuse check point on next road delivery of electrical energy circuit described as current gating, return and perform described step S402.
It should be noted that, the fuse state on the delivery of electrical energy circuit of all each roads is detected to the state that specifically can be detected fuse by the fuse state testing circuit with isolation detection function.
Fig. 5 is the structural representation of the fuse state testing circuit that the embodiment of the present invention provides.As shown in Figure 5, this fuse state testing circuit comprises:
Power management module 501, CAN communication circuit and interface 502, microcontroller 503, voltage sensor metering circuit 504, fuse gating circuit 505 and contactless switch state detection circuit 506;
Described power management module 501 is for being converted to the operating voltage needed for described CAN communication circuit and interface 502, described microcontroller 503, described voltage sensor metering circuit 504, described fuse gating circuit 505 and described contactless switch state detection circuit 506 by input voltage; For existing electronlmobil, power management module 501 may be used for the input voltage of 24V to be converted to described CAN communication circuit and interface 502, described microcontroller 503, described voltage sensor metering circuit 504, described fuse gating circuit 505 and described contactless switch state detection circuit 506 and to work the voltage of required 5V and 3.3V;
Described fuse gating circuit 505 is for according to the fuse check point on delivery of electrical energy circuit described in each road of default timing strobe;
Whether described contactless switch state detection circuit 506 is in attracting state for the contactless switch detected on delivery of electrical energy circuit described in each road;
Described voltage sensor metering circuit 504 carries out the first conversion and process for the voltage at fuse check point place electrokinetic cell being outputted to current gating, obtain the analog voltage at the fuse check point place of current gating, and described analog voltage is delivered to described microcontroller;
Described microcontroller 503 is for according to the fuse check point on delivery of electrical energy circuit described in each road of fuse gating circuit gating described in default time schedule control; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, receive the analog voltage at the fuse check point place of current gating; Second conversion is carried out to described analog voltage, obtain the state of the fuse on the delivery of electrical energy circuit of current gating, the state of described fuse is sent to high-pressure system failure detector by described CAN communication circuit and interface, to make the delivery of electrical energy circuit whether et out of order at described high-pressure system failure detector fuse place according to the condition adjudgement of described fuse; When described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
It should be noted that, in embodiments of the present invention, fuse state testing circuit can detect the state being configured in the fuse of each bar delivery of electrical energy circuit in high-tension distribution box in real time, and testing result is sent to high-pressure system failure detector with the interval of Nms by CAN communication circuit and interface by microcontroller 503.Wherein, N is can scalar quantity, and communication protocol follows I1939 communication protocol.
Based on the high-pressure system fault detection method that above-described embodiment provides, the embodiment of the present invention additionally provides a kind of high-pressure system failure detector.Specifically see following examples.Identical with method, the high-pressure system described in the embodiment of the present invention comprises at least one road delivery of electrical energy circuit, and described delivery of electrical energy circuit is configured with fuse.
Fig. 6 is the structural representation of the high-pressure system failure detector that the embodiment of the present invention provides.As shown in Figure 6, this detecting device comprises with lower module:
Acquisition module 61, for obtaining the state detecting the fuse obtained;
Judge module 62, for the delivery of electrical energy circuit whether et out of order at fuse place according to the condition adjudgement of described fuse;
Control module 63, for when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
Because high-pressure system comprises many delivery of electrical energy circuits, the consumer that different delivery of electrical energy connection is different, therefore, in embodiments of the present invention, be previously provided with the control policy corresponding from different delivery of electrical energy circuit, with when delivery of electrical energy line failure, corresponding control policy is adopted to be that car load controls, to ensure the safety of vehicle.
Under normal circumstances, the high-pressure system with drive motor branch road, steering pump branch road, Air compressor branch road, DC-DC branch road, air-conditioning branch road and charging paths can meet the need for electricity of general battery-driven car, therefore, based on the concrete structure of this high-pressure system, the control module 63 described in the embodiment of the present invention can specifically comprise:
First controls submodule 631, second control submodule 632, the 3rd control submodule 633, the 4th controls submodule 634, the 5th control submodule 635 and the 6th controls submodule 636;
Wherein, described first controls submodule 631 pieces for sending the alarm message of described electrokinetic cell DC bus et out of order, controls parking lamp and opens;
Described second controls submodule 632 for sending the alarm message information of described steering pump branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 3rd controls submodule 633 for sending the alarm message of described Air compressor branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 4th controls submodule 634 for sending the alarm message of described DC-DC branch road et out of order, closes low voltage equipment;
Described 5th controls submodule 635 for sending the alarm message of described air-conditioning branch road et out of order; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell;
Described 6th controls submodule 636 for sending the alarm message of described charging paths et out of order, terminates current charging work.
The failure detector of the high-pressure system provided for the embodiment of the present invention above.By this detecting device, when delivery of electrical energy line failure, the control policy corresponding with this delivery of electrical energy circuit can be adopted to control car load, thus can ensure the safety of vehicle.And in the present invention, the control policy that delivery of electrical energy circuit is corresponding and delivery of electrical energy circuit match, for different delivery of electrical energy circuits, take the control that different control policies carries out effectively and reasonably, make the control policy of car load more rationally, hommization more, drastically increase car load run and parking process of charging in safety.
It should be noted that, the high-pressure system failure detector described in the embodiment of the present invention can be configured in the entire car controller of battery-driven car.
Further, in embodiments of the present invention, described delivery of electrical energy circuit is configured with fuse check point, the state of described fuse is detected by fuse state detecting device and obtains, and as shown in Figure 7, described fuse state detecting device comprises:
Control gating unit 71, for controlling the fuse check point on delivery of electrical energy circuit described in gating;
Receiving element 72, when contactless switch on the delivery of electrical energy circuit at the fuse check point place when current gating is in attracting state, the fuse receiving current gating detects the analog voltage pointed out, and described analog voltage carries out the first conversion to the voltage at fuse check point place electrokinetic cell being outputted to described current gating and process obtains;
Converting unit 73, for carrying out the second conversion to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
Be more than the preferred embodiments of the present invention.
It should be noted that, detailed description of the invention listed is above only illustrating for feasibility embodiment of the present invention.They are also not used to limit the scope of the invention, and all the present invention of disengaging conceive the equivalent implementations that does or change and all should be included within protection scope of the present invention.
Claims (10)
1. a high-pressure system fault detection method, is characterized in that, described high-pressure system comprises at least one road delivery of electrical energy circuit, and described delivery of electrical energy circuit is configured with fuse, and described method comprises:
Obtain the state detecting the fuse obtained;
The delivery of electrical energy circuit at fuse place whether et out of order according to the condition adjudgement of described fuse;
When described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
2. method according to claim 1, is characterized in that, described delivery of electrical energy circuit is configured with fuse check point, detects the state of described fuse, specifically comprise:
Control the fuse check point on delivery of electrical energy circuit described in gating;
Judge whether the contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
Second conversion is carried out to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
3. method according to claim 1, is characterized in that, described high-pressure system comprises multiple way electric transmission route, and the state detecting described fuse specifically comprises: detect the fuse state on delivery of electrical energy circuit described in all each roads.
4. method according to claim 3, is characterized in that, delivery of electrical energy circuit described in every road is configured with fuse check point, and the fuse state on delivery of electrical energy circuit described in all each roads of described detection, specifically comprises:
Steps A, according to the fuse check point on the delivery of electrical energy circuit of default time schedule control gating one road;
Step B, judge current gating fuse check point place delivery of electrical energy circuit on contactless switch whether be in attracting state, if so, perform step C, if not, perform step D;
Step C, the state of the fuse on the delivery of electrical energy circuit at the fuse check point place of current gating to be detected;
Step D, according to the fuse check point on next road delivery of electrical energy circuit of default timing strobe, and using the fuse check point of the fuse check point on next road delivery of electrical energy circuit described as current gating, return and perform described step B.
5. method according to claim 4, is characterized in that, described step C specifically comprises:
Receive the analog voltage at the fuse check point place of current gating, described analog voltage is that the voltage outputting to the fuse check point place of described current gating to electrokinetic cell carries out the first conversion and process obtains;
Second conversion is carried out to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
6. the method according to any one of claim 1-5, is characterized in that,
When electrokinetic cell DC bus et out of order, described when described delivery of electrical energy line failure, the control survey corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described electrokinetic cell DC bus et out of order, control parking lamp and open;
When described delivery of electrical energy circuit is steering pump branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message information of described steering pump branch road et out of order, control drive motor falls turns round to carry out Control for Speed Limitation to car load;
When described delivery of electrical energy circuit is Air compressor branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described Air compressor branch road et out of order, control drive motor falls turns round to carry out Control for Speed Limitation to car load;
When described delivery of electrical energy circuit is DC-DC branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described DC-DC branch road et out of order, close low voltage equipment;
When described delivery of electrical energy circuit is air-conditioning branch road, described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described air-conditioning branch road et out of order; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell;
When described delivery of electrical energy circuit is charging paths; Described when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle, specifically comprises:
Send the alarm message of described charging paths et out of order, terminate current charging work.
7. a high-pressure system failure detector, is characterized in that, described high-pressure system comprises at least one road delivery of electrical energy circuit, and described delivery of electrical energy circuit is configured with fuse, and described device comprises:
Acquisition module, for obtaining the state detecting the fuse obtained;
Judge module, for the delivery of electrical energy circuit whether et out of order at fuse place according to the condition adjudgement of described fuse;
Control module, for when described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
8. device according to claim 7, is characterized in that, described delivery of electrical energy circuit is configured with fuse check point, and the state of described fuse is detected by fuse state detecting device and obtains, and described fuse state detecting device comprises:
Control gating unit, for controlling the fuse check point on delivery of electrical energy circuit described in gating;
Receiving element, when contactless switch on the delivery of electrical energy circuit at the fuse check point place when current gating is in attracting state, the fuse receiving current gating detects the analog voltage pointed out, and described analog voltage carries out the first conversion to the voltage at fuse check point place electrokinetic cell being outputted to described current gating and process obtains;
Converting unit, for carrying out the second conversion to described analog voltage, obtains the state of the fuse on the delivery of electrical energy circuit of current gating.
9. device according to claim 7, it is characterized in that, described high-pressure system comprises multiple way electric transmission route, delivery of electrical energy circuit described in every road is configured with fuse check point, the state of described fuse is detected by fuse state testing circuit, and described fuse state testing circuit comprises: power management module, CAN communication circuit and interface, microcontroller, voltage sensor metering circuit, fuse gating circuit and contactless switch state detection circuit;
Described power management module is used for input voltage to be converted to described CAN communication circuit and interface, described microcontroller, described voltage sensor metering circuit, described fuse gating circuit and the operating voltage needed for described contactless switch state detection circuit;
Described fuse gating circuit is for according to the fuse check point on delivery of electrical energy circuit described in each road of default timing strobe;
Whether described contactless switch state detection circuit is in attracting state for the contactless switch detected on delivery of electrical energy circuit described in each road;
The voltage that described voltage sensor metering circuit is used for outputting to electrokinetic cell the fuse check point place of current gating carries out the first conversion and process, obtain the analog voltage at the fuse check point place of current gating, and described analog voltage is delivered to described microcontroller;
Described microcontroller is for according to the fuse check point on delivery of electrical energy circuit described in each road of fuse gating circuit gating described in default time schedule control; When contactless switch on the delivery of electrical energy circuit at the fuse check point place of current gating is in attracting state, receive the analog voltage at the fuse check point place of current gating; Second conversion is carried out to described analog voltage, obtain the state of the fuse on the delivery of electrical energy circuit of current gating, the state of described fuse is sent to high-pressure system failure detector by described CAN communication circuit and interface, to make the delivery of electrical energy circuit whether et out of order at described high-pressure system failure detector fuse place according to the condition adjudgement of described fuse; When described delivery of electrical energy line failure, the control policy corresponding with described delivery of electrical energy circuit according to pre-setting controls car load, to ensure the safety of vehicle.
10. the device according to any one of claim 7-9, it is characterized in that, described control module comprises: the first control submodule, second controls at least one in submodule, the 3rd control submodule, the 4th control submodule, the 5th control submodule and the 6th control submodule;
Described first controls submodule for sending the alarm message of described electrokinetic cell DC bus et out of order, controls parking lamp and opens;
Described second controls submodule for sending the alarm message information of described steering pump branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 3rd controls submodule for sending the alarm message of described Air compressor branch road et out of order, and control drive motor falls turns round to carry out Control for Speed Limitation to car load;
Described 4th controls submodule for sending the alarm message of described DC-DC branch road et out of order, closes low voltage equipment;
Described 5th controls submodule for sending the alarm message of described air-conditioning branch road et out of order; When the temperature of electrokinetic cell is higher than preset temperature, control electrokinetic cell and carry out small area analysis discharge and recharge, described small area analysis is 50 ~ 70% of the normal charging and discharging currents of described electrokinetic cell;
Described 6th controls submodule for sending the alarm message of described charging paths et out of order, terminates current charging work.
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Cited By (1)
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| CN110901756A (en) * | 2019-12-24 | 2020-03-24 | 西安法士特汽车传动有限公司 | Steering pump failure safety control method, readable storage medium and terminal equipment |
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