CN106786344A - Overcurrent protective device, method, system and electronic equipment - Google Patents
Overcurrent protective device, method, system and electronic equipment Download PDFInfo
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- CN106786344A CN106786344A CN201611195212.5A CN201611195212A CN106786344A CN 106786344 A CN106786344 A CN 106786344A CN 201611195212 A CN201611195212 A CN 201611195212A CN 106786344 A CN106786344 A CN 106786344A
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- load
- current
- power supply
- preset value
- overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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Abstract
The invention discloses a kind of overcurrent protective device, method, system and electronic equipment, it is related to technical field of automotive electronics, wherein overcurrent protective device includes：Current acquisition module, for being connected with load, the load current signal for gathering the load；Control circuit module, is connected with the current acquisition module, for generating overcurrent protection preset value corresponding with the load according to the load current signal；Control circuit module is additionally operable to be connected with power supply, for after load current overcurrent protection preset value corresponding more than the load is detected, controlling the power supply to stop to the load supplying.So as to, realize in overcurrent protection can according to the actual conditions of load to electronic system in overcurrent protection thresholding flexibly adjust, without for the different intelligent high side switches of different load configurations, saving the cost of product.
Description
Technical field
The present invention relates to technical field of automotive electronics, and in particular to a kind of overcurrent protective device, method, system and electronics set
It is standby.
Background technology
In electronic system design, often there is main system to need the design requirement powered to subsystem.In power supply process by
In subsystem damage or due to power cable damage etc. reason, subsystem as main system load end, it will usually occur occur
The situation of short circuit.When load or subsystem are short-circuited, main system occurs that supplying power for outside occurs the situation of excessively stream, this meeting
Cause main system power itself stability to go wrong, and then influence the normal function of main system.For right in general main system
Outer power supply has the mechanism of overcurrent protection, and when the abnormal current demand for surpassing the expectation occurs in load end, main system can be cut off to son
The power supply of system, to ensure the stabilization that main system is powered.
In the prior art, controller controls intelligent high side switches supplying power for outside by IO, and intelligent high side switches inside is right
Electric current is monitored, and when there is excessively stream, intelligent high side switches can voluntarily cut off power supply or notifier processes device is made accordingly
Treatment.However, the overcurrent protection thresholding of intelligent high side switches preset before dispatching from the factory, needed for different products or load
Corresponding intelligent high side switches are equipped with, the cost of user, also, the thresholding that intelligent high side switches set is not only increased
Value is usually fixed value, can not flexibly be adjusted according to the situation of actual loading in use, and user is caused
Inconvenience.
Therefore, how flexible adjustment is carried out to overcurrent protection thresholding in electronic system according to actual loading situation turns into urgently
Problem to be solved.
The content of the invention
In view of this, a kind of overcurrent protective device, method, system and electronic equipment are the embodiment of the invention provides, to solve
The problem of flexible adjustment is certainly carried out to overcurrent protection thresholding in electronic system according to actual loading situation.
According in a first aspect, the embodiment of the invention provides a kind of overcurrent protective device, including：
Current acquisition module, for being connected with load, the load current signal for gathering load；Control circuit module,
It is connected with current acquisition module, for determining overcurrent protection preset value corresponding with load according to load current signal；Control electricity
Road module is additionally operable to be connected with power supply, for after load current overcurrent protection preset value corresponding more than load is detected, controlling
Power supply processed stops to load supplying.
Alternatively, control circuit module includes：Controller, is connected, in load current signal with current acquisition module
Triggering under search corresponding with load overcurrent protection preset value；It is additionally operable to detect load current default more than overcurrent protection
After value, generate for controlling power supply to stop the cut-off signal to load supplying；On-off circuit, respectively with power supply, controller and electricity
Stream acquisition module connection, for being disconnected under the control of cut-off signal, to control being stopped power supply to load for power supply.
Alternatively, control circuit module also includes：Memory module, is connected with controller, and memory module is used to store multiple
Overcurrent protection preset value, multiple overcurrent protection preset values are corresponding with different loads respectively；Controller is used in load current signal
Triggering under according to load current signal characterize load current size searched from memory module corresponding overcurrent protection preset
Value.
Alternatively, current acquisition module includes：Sampling resistor, is arranged between on-off circuit and load, and and controller
Connection, the electric current for gathering load.
Alternatively, current acquisition module also includes：Digital acquisition unit, is arranged between sampling resistor and controller, uses
Sampled in sampling resistor magnitude of voltage, sampling resistor magnitude of voltage is used to characterize the size of load current.
Alternatively, current acquisition module also includes：Amplifying unit, is arranged between sampling resistor and controller, for inciting somebody to action
The signal of sampling resistor collection is amplified.
According to second aspect, a kind of over-current protection method is the embodiment of the invention provides, including：Obtain the load electricity of load
Stream information；Overcurrent protection preset value corresponding with load is determined according to load current information；Judge negative according to load current information
Carry whether electric current exceedes the corresponding overcurrent protection preset value of load；If load current exceedes load, corresponding overcurrent protection is preset
Value, then send for controlling power supply to stop the control signal to load supplying, to control power supply to stop power supply load.
Alternatively, determine that overcurrent protection preset value corresponding with load includes according to load current information：According to load electricity
The load current size for flowing characterization searches corresponding overcurrent protection preset value from memory module；Send for controlling power supply
Stop including the control signal of load supplying：Send for disconnecting on-off circuit cut-off signal, to control power supply to stop load
Only power.
According to the third aspect, a kind of vehicle-mounted Over Current Protection System is the embodiment of the invention provides, including：Load；Power supply, uses
In powering load；The overcurrent protective device of any one in above-mentioned first aspect.
According to fourth aspect, a kind of electronic equipment is the embodiment of the invention provides, including：At least one processor；And
The memory being connected with least one processor communication；Wherein, have can be by described at least one for the memory storage
The instruction that reason device is performed, the instruction is by least one computing device, so that at least one computing device the
Over-current protection method described in any one optional mode of two aspects or second aspect.
According to the 5th aspect, a kind of non-transient computer readable storage medium storing program for executing is the embodiment of the invention provides, it is described non-temporary
State computer-readable recording medium storage computer instruction, the computer instruction is used to make the computer perform second aspect
Or the over-current protection method described in any one optional mode of second aspect.
According to the 6th aspect, a kind of computer program product, the computer program product are the embodiment of the invention provides
Including storing the calculation procedure on non-transient computer readable storage medium storing program for executing, the computer program includes programmed instruction, when
Described program instruction is when being computer-executed, make the computer perform second aspect or second aspect any one is optional
Over-current protection method described in mode.
Overcurrent protective device, method, system and electronic equipment that the embodiment of the present invention is provided, the collection of current acquisition module
Load current signal, and load current signal is sent to control circuit module, control circuit module is according to load current signal
It is determined that overcurrent protection preset value corresponding with load, and load current signal is detected, exceed load current is detected
After loading corresponding overcurrent protection preset value, expression is loaded with short circuit or failure, and control power supply stops to load supplying, to protect
Load and main electronic system so that, realize in overcurrent protection can according to the actual conditions of load to electronic system in mistake
Stream protection thresholding is flexibly adjusted, without for the different intelligent high side switches of different load configurations, saving the cost of product.
Brief description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematical without that should manage
Solution is to carry out any limitation to the present invention, in the accompanying drawings：
Fig. 1 shows overcurrent protective device schematic diagram according to embodiments of the present invention；
Fig. 2 shows overcurrent protective device schematic diagram according to another embodiment of the present invention；
Fig. 3 shows overcurrent protective device schematic diagram according to another embodiment of the present invention；
Fig. 4 shows the schematic flow sheet of over-current protection method according to embodiments of the present invention；
Fig. 5 shows the schematic diagram of electronic equipment according to embodiments of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art are not having
There is the every other embodiment made and being obtained under the premise of creative work, belong to the scope of protection of the invention.
A kind of overcurrent protective device is the embodiment of the invention provides, as shown in figure 1, the device includes：
Current acquisition module 10, is connected with load, the load current signal for gathering load.In the present embodiment, bear
Carrying current signal is used to characterize the size of the electric current for loading.In the particular embodiment, between Over Current Protection System and load
Series current acquisition module 10, used as output end powering load, the electric current that can be loaded with Real-time Collection is believed.In the present embodiment
In, the corresponding size of current of different loads is different.
Control circuit module 20 is connected with current acquisition module 10, corresponding with load for being determined according to load current signal
Overcurrent protection preset value；Control circuit module 20 is additionally operable to be connected with power supply, and load correspondence is exceeded load current is detected
Overcurrent protection preset value after, control power supply stop to load supplying.In the particular embodiment, in control circuit module 20
Can be prestored the data for generating overcurrent protection preset value corresponding with load according to the corresponding load current signal of different loads
Bag or overcurrent protection preset value corresponding with load, when control circuit module 20 receives the load electricity of the collection of current acquisition module 10
After stream signal, control circuit module 20 calls generation present load corresponding with present load under the triggering of load current signal
The packet of corresponding overcurrent protection preset value, generates overcurrent protection preset value corresponding with present load, or, directly invoke
It is pre-stored in the overcurrent protection preset value corresponding with present load in control circuit module 20.The real-time detection of control circuit module 20
Load current information, after load current is detected more than the corresponding overcurrent protection preset value of present load, then shows current negative
Be loaded with it is short-circuit or faulty, control power supply stop to load supplying.
The overcurrent protective device that the embodiment of the present invention is provided, current acquisition module collection load current signal, and will be negative
Carry current signal and be sent to control circuit module, control electric current module determines and the corresponding excessively stream of load according to load current signal
Protection preset value, detects to load current signal, is preset load current overcurrent protection corresponding more than load is detected
After value, expression is loaded with short circuit or failure, and control power supply stops to load supplying, to protect load and main electronic system, so that,
Realize in overcurrent protection can according to the actual conditions of load to electronic system in overcurrent protection thresholding flexibly adjust, nothing
The different intelligent high side switches of different load configurations need to be directed to, the cost of product is saved.
In alternatively embodiment, control circuit module 20 includes：
Controller 21, is connected with the current acquisition module 10, for being searched under the triggering of load current signal and being born
Corresponding overcurrent protection preset value is carried, after load current overcurrent protection preset value corresponding more than load is detected, generation is used
Stop the cut-off signal to the load supplying in the power supply is controlled.In the particular embodiment, controller 21 can be single
The control units such as piece machine, MCU, after current acquisition module 10 collects load current signal, by load current signal send to
Controller 21, under the triggering of load current signal, controller 21 searches overcurrent protection preset value corresponding with present load, real
When load current signal is detected, detecting after load current exceedes the corresponding overcurrent protection preset value of load, can be with
Output control power supply stops the cut-off signal to load supplying, and the cut-off signal can be the low level letter of controlling switch shut-off
Number.
On-off circuit 22, is connected, for the control in cut-off signal with power supply, controller 21 and current acquisition module 10 respectively
System is lower to be disconnected, to control power supply to stop power supply load.In the present embodiment, on-off circuit 22 can be transistor circuit,
Turned under the triggering of high level, make power supply to load supplying, turned off under the triggering of low level signal, power supply is stopped load
Power supply.In the particular embodiment, in the cut-off signal of the output of controller 21, such as low level, trigger switch circuit 22, switch
Connection between the power cutoff of circuit 22 and load, control power supply is stopped power supply to load
In alternatively embodiment, control electric current module 20 can also include：
Memory module 23, is connected with controller 21, and memory module 23 is used to store multiple overcurrent protection preset values, multiple mistakes
Stream protection preset value is corresponding with different loads respectively；Controller 21 is used under the triggering of load current signal according to load current
The load current size of sign searches corresponding overcurrent protection preset value from memory module 23.In the particular embodiment, deposit
Can be stored with multiple overcurrent protection preset values corresponding with different loads in storage module 23, it is also possible to storage and different loads pair
The packet for generating multiple overcurrent protection preset values answered.Controller 21 after load current signal is received, according to work as
Preceding load current signal searches overcurrent protection preset value corresponding with load, or calls corresponding with load for generating excessively stream guarantor
The packet of preset value is protected, corresponding overcurrent protection preset value is generated.
In alternatively embodiment, current acquisition module 10 includes：
Sampling resistor 11, between being arranged on on-off circuit and getting lodged in, and connects in controller 21, the electricity for gathering load
Stream.In the particular embodiment, it is the power supply of proof load, sampling resistor 11 can use the resistance of smaller resistance, for example,
10m Ω resistance, in current acquisition, it is possible to use the voltage difference that the two ends of sampling resistor 11 produce calculates the electricity of sampling resistor 11
Stream, the control source that sampling resistor 11 will be gathered to controller 21, controller 21 is calculated using the voltage verses current of collection.
In the present embodiment, electric current is by after sampling resistor 11, the pressure difference of resistance two ends generation is smaller, generally 10mV magnitudes, to negative
The influence of load can be ignored.
Because the voltage difference at the two ends of sampling resistor 11 is smaller, when the precision of A/D converter that controller 21 is carried is relatively low,
Calculating to electric current may be inaccurate, in alternatively embodiment, as shown in Fig. 2 current acquisition module 10 can also include：
Digital acquisition unit 12, is arranged between sampling resistor 11 and controller 21, for entering to sampling resistor magnitude of voltage
Row sampling.In the present embodiment, sampling resistor magnitude of voltage is used to characterize load current size.In the particular embodiment, numeral
Sampling unit can be high-precision adc, specifically, can be selected according to the precision of overcurrent protective device.Sampling
The both end voltage difference signal of resistance 11 is input to the input pin of high-precision adc, and analog-digital converter is carried out to input voltage
Sampling, sampled result is exported to controller 21 by the communication interface being connected with controller 21.In sampling resistor 11 and control
High-precision adc is set between device 21, and high-precision adc more can accurately gather less magnitude of voltage,
Sampling resistor magnitude of voltage is gathered using high-precision adc, load current information more can be accurately gathered.
Due to relatively costly, the different high-precision adcs of different precision needs of high precision analogue converter,
It is reduces cost, in alternatively embodiment, as shown in figure 3, current acquisition module 10 can also include：
Amplifying unit 13, is arranged between sampling resistor 11 and controller 21, for the signal for gathering sampling resistor 11
Amplify.In the present embodiment, amplifying unit can be operational amplifier.In the particular embodiment, amplifying unit 13 can be by
The voltage signal at the two ends of sampling resistor 11 is amplified, using the digital analog converter in controller 21 to the voltage signal after amplification
Be acquired, can more accurate computational load electric current size.
The overcurrent protective device that the embodiment of the present invention is provided, current acquisition module collection load current signal, and will be negative
Carry current signal and be sent to control circuit module, control circuit module determines and the corresponding excessively stream of load according to load current signal
Protection preset value, and load current signal is detected, detecting, load current overcurrent protection corresponding more than load is pre-
If after value, expression is loaded with short circuit or failure, and control power supply stops to load supplying, to protect load and main electronic system, from
And, realize in overcurrent protection can according to the actual conditions of load to electronic system in overcurrent protection thresholding flexibly adjust
It is whole, without for the different intelligent high side switches of different load configurations, saving the cost of product.
The embodiment of the present invention additionally provides a kind of vehicle-mounted Over Current Protection System, including：
Vehicle-mounted load；Power supply, for vehicle-mounted load supplying；The overcurrent protection dress of any one description in above-described embodiment
Put.In the particular embodiment, the different load current of different vehicle-mounted load correspondences, overcurrent protective device collection load current
Information, according to the corresponding overcurrent protection preset value of load current information searching present load, real-time detection load current size,
Load current is detected more than after overcurrent protection preset value, the connection of deenergization and load stops power supply to load supplying.
The overcurrent protective device that the embodiment of the present invention is provided, current acquisition module collection load current signal, and will be negative
Carry current signal and be sent to control circuit module, control circuit module determines and the corresponding mistake of load according to load current signal life
Stream protection preset value, and load current signal is detected, exceed the corresponding overcurrent protection of load load current is detected
After preset value, expression is loaded with short circuit or failure, and control power supply stops to load supplying, to protect load and main electronic system,
So as to, realize in overcurrent protection can according to the actual conditions of load to electronic system in overcurrent protection thresholding flexibly adjust
It is whole, without for the different intelligent high side switches of different load configurations, saving the cost of product.
The embodiment of the present invention additionally provides a kind of over-current protection method, as shown in figure 4, the method includes：
S41. the load current information of load is obtained.In the particular embodiment, load current signal is used to characterize and loads
Electric current size, controller obtain be connected on controller and and load between current acquisition module collection load load
Current information.
S42. overcurrent protection preset value corresponding with load is determined according to load current information.In depositing for being connected with controller
In reservoir can according to the different corresponding load current signals of load prestore it is corresponding with load generation overcurrent protection preset value
Packet or overcurrent protection preset value corresponding with load, when controller receives the load current letter of current acquisition module collection
After number, controller calls generation present load pair corresponding with present load from memory under the triggering of load current signal
The packet of the overcurrent protection preset value answered, generates overcurrent protection preset value corresponding with present load, or, directly invoke pre-
In the presence of with the overcurrent protection preset value corresponding with present load in the memory that controller is connected.
S43. judge whether load current exceedes the corresponding overcurrent protection preset value of load according to load current information.In tool
In the embodiment of body, after load current information is got, the size to load current is detected in real time, if load current
More than corresponding overcurrent protection preset value is loaded, then into step S44.If load current excessively stream corresponding no more than load is protected
Shield preset value, then load normal.
S44. send for controlling power supply to stop the control signal to load supplying.In a particular embodiment, detecting
After load current exceedes the corresponding overcurrent protection preset value of load, can stop believing the disconnection of load supplying with output control power supply
Number, the cut-off signal can be the low level signal of controlling switch circuit shut-off, be received for cut-off signal in on-off circuit
Afterwards, control power supply is stopped power supply to load.
Over-current protection method provided in an embodiment of the present invention, is determined and load by the load current information of the load for obtaining
Corresponding overcurrent protection preset value, after exceeding preset value according to load current infomation detection to load current, sends control power supply
Stop the control signal to load supplying, the power supply of disconnecting consumers is loaded and main electronic system to reach protection, so that, realize
In overcurrent protection can according to the actual conditions of load to electronic system in overcurrent protection thresholding flexibly adjust, without pin
The intelligent high side switches different to different load configurations, save the cost of product.
The embodiment of the present invention additionally provides a kind of electronic equipment, as shown in figure 5, the equipment also includes：At least one treatment
Device 51；And the memory 52 communicated to connect with least one processor 51；Wherein, be stored with can be by least one for memory 52
The instruction that processor 51 is performed, instruction is performed by least one processor 51, so that at least one processor 51 performs above-mentioned side
Any one over-current protection method of method embodiment.
Fig. 5 is that the hardware configuration of the electronic equipment of the processing method of execution list items operation provided in an embodiment of the present invention shows
It is intended to, as shown in figure 5, the equipment includes one or more processors 51 and memory 51, is with a processor 51 in Fig. 5
Example.
The equipment for performing the processing method of list items operation can also include：Input unit 53 and output device 54.
Processor 51, memory 52, input unit 53 and output device 54 can be connected by bus or other modes,
In Fig. 5 as a example by being connected by bus.
Processor 51 can be central processing unit (Central Processing Unit, CPU).Processor 610 can be with
It is other general processors, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) or other PLDs, discrete gate or transistor logic,
The chips such as discrete hardware components, or above-mentioned all kinds of chips combination.General processor can be microprocessor or the treatment
Device can also be any conventional processor etc..
Memory 52 can be used to storing non-transient software program, non-as a kind of non-transient computer readable storage medium storing program for executing
The corresponding program of processing method of the list items operation in transient computer executable program and module, such as the embodiment of the present application
Instruction/module.Processor 51 passes through to run the non-transient software program stored in memory 52, instruction and module, so that
The various function application of execute server and data processing, that is, realize the treatment side of above method embodiment list items operation
Method.
Memory 52 can include storing program area and storage data field, wherein, storing program area can storage program area,
Application program required at least one function；Storage data field can store the use institute of the processing unit operated according to list items
Data of establishment etc..Additionally, memory 52 can include high-speed random access memory, non-transient memory can also be included,
For example, at least one disk memory, flush memory device or other non-transient solid-state memories.In certain embodiments, deposit
Reservoir 52 is optional including the memory remotely located relative to processor 51, and these remote memories can be by network connection extremely
The processing unit of list items operation.The example of above-mentioned network includes but is not limited to internet, intranet, LAN, movement
Communication network and combinations thereof.
Input unit 53 can receive the numeral or character information of input, and produce and the processing unit of list items operation
The key signals input that user is set and function control is relevant.Output device 54 may include the display devices such as display screen.
One or more module is stored in memory 52, when being performed by one or more processor 51, is performed
Method as shown in Figure 4.
The method that the executable embodiment of the present invention of the said goods is provided, possesses the corresponding functional module of execution method and has
Beneficial effect.Not ins and outs of detailed description in the present embodiment, the correlation that for details, reference can be made in embodiment as shown in Figure 4 is retouched
State.
The embodiment of the present invention additionally provides a kind of non-transient computer storage medium, and computer-readable storage medium is stored with calculating
Machine executable instruction, the computer executable instructions can perform the treatment side of the list items operation in above-mentioned any means embodiment
Method.Wherein, storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM), random storage note
Recall body (Random Access Memory, RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive,
Abbreviation：) or solid state hard disc (Solid-State Drive, SSD) etc. HDD；Storage medium can also include the storage of mentioned kind
The combination of device.
It will be understood by those skilled in the art that all or part of flow in realizing above-described embodiment method, can be logical
The hardware that computer program is crossed to instruct correlation is completed, program can be stored in a computer read/write memory medium, should
Program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, storage medium can for magnetic disc, CD, only
Read storage memory (ROM) or random access memory (RAM) etc..
Although being described in conjunction with the accompanying embodiments of the invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case of various modification can be adapted and modification, such modification and modification are each fallen within by appended claims institute
Within the scope of restriction.
Claims (10)
1. a kind of overcurrent protective device, it is characterised in that including：
Current acquisition module (10), is connected, the load current signal for gathering the load with load；
Control circuit module (20), is connected with the current acquisition module (10), for being determined according to the load current signal
Overcurrent protection preset value corresponding with the load；
Control circuit module (20) is also connected with power supply, for detecting load current excessively stream guarantor corresponding more than the load
After shield preset value, the power supply is controlled to stop power supply the load.
2. overcurrent protective device as claimed in claim 1, it is characterised in that the control circuit module (20) includes：
Controller (21), is connected with the current acquisition module (10), for being searched under the triggering of the load current signal
Overcurrent protection preset value corresponding with the load；It is additionally operable to detect the load current default more than the overcurrent protection
After value, generate for controlling the power supply to stop the cut-off signal to the load supplying；
On-off circuit (22), is connected with the power supply, the controller (21) and the current acquisition module (10) respectively, is used for
Disconnected under the control of the cut-off signal, to control the power supply to stop power supply the load.
3. overcurrent protective device as claimed in claim 2, it is characterised in that the control circuit module (20) also includes：
Memory module (23), is connected with the controller (21), and the memory module (23) is pre- for storing multiple overcurrent protections
If value, the multiple overcurrent protection preset value is corresponding with different loads respectively；
The controller (21) is for the bearing according to load current signal sign under the triggering of the load current signal
Carry size of current and corresponding overcurrent protection preset value is searched from the memory module (23).
4. the overcurrent protective device as described in claim 1-3 any one, it is characterised in that the current acquisition module (10)
Including：
Sampling resistor (11), is arranged between the on-off circuit (22) and the load, and is connected with the controller (21),
Electric current for gathering the load.
5. overcurrent protective device as claimed in claim 4, it is characterised in that the current acquisition module (10) also includes：
Digital acquisition unit (12), is arranged between the sampling resistor (11) and the controller (21), for being adopted to described
Sample resistive voltage value is sampled, and the sampling resistor magnitude of voltage is used to characterize the size of the load current.
6. overcurrent protective device as claimed in claim 4, it is characterised in that the current acquisition module (10) also includes：
Amplifying unit (13), is arranged between the sampling resistor (11) and the controller (21), for the sampling is electric
The signal of resistance (11) collection is amplified.
7. a kind of over-current protection method, it is characterised in that including：
Obtain the load current information of load；
Overcurrent protection preset value corresponding with the load is determined according to the load current information；
Judge whether load current exceedes the corresponding overcurrent protection preset value of the load according to the load current information；
If the load current exceedes the corresponding overcurrent protection preset value of the load, send right for controlling power supply to stop
The control signal of the load supplying, to control the power supply to stop power supply the load.
8. over-current protection method as claimed in claim 7, it is characterised in that it is described according to the load current information determine with
The corresponding overcurrent protection preset value of the load includes：
Corresponding overcurrent protection is searched from the memory module according to the load current size that the load current signal is characterized
Preset value；
It is described to send for controlling power supply to stop including the control signal of the load supplying：
Send for disconnecting on-off circuit cut-off signal, to control the power supply to stop power supply the load.
9. a kind of vehicle-mounted Over Current Protection System, it is characterised in that including：
Vehicle-mounted load；
Power supply, for the vehicle-mounted load supplying；
Overcurrent protective device as claimed in any one of claims 1 to 6.
10. a kind of electronic equipment, it is characterised in that including：
At least one processor；And
The memory being connected with least one processor communication；Wherein, have can be by described at least one for the memory storage
The instruction of individual computing device, the instruction is by least one computing device, so that at least one processor is held
Over-current protection method any one of row claim 7 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195212.5A CN106786344A (en) | 2016-12-20 | 2016-12-20 | Overcurrent protective device, method, system and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195212.5A CN106786344A (en) | 2016-12-20 | 2016-12-20 | Overcurrent protective device, method, system and electronic equipment |
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| Publication Number | Publication Date |
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| CN106786344A true CN106786344A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611195212.5A Pending CN106786344A (en) | 2016-12-20 | 2016-12-20 | Overcurrent protective device, method, system and electronic equipment |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108601135A (en) * | 2018-03-02 | 2018-09-28 | 长沙凯上电子科技有限公司 | A kind of intelligent power control circuit and its control method |
| CN108839581A (en) * | 2018-06-29 | 2018-11-20 | 北京新能源汽车股份有限公司 | Electric car method for controlling power supply, device and equipment |
| CN109144160A (en) * | 2018-08-31 | 2019-01-04 | 重庆惠科金渝光电科技有限公司 | A kind of bearing calibration and device |
| CN109149514A (en) * | 2018-08-21 | 2019-01-04 | 广东安居宝数码科技股份有限公司 | Output protection circuit and control method, the building speakerphone of power supply |
| CN109324220A (en) * | 2018-09-06 | 2019-02-12 | 上海有个机器人有限公司 | Robot door-plate over-current protection method and system, storage medium and terminal |
| CN109713637A (en) * | 2018-12-27 | 2019-05-03 | 惠科股份有限公司 | A kind of over-current protection method, current foldback circuit and display device |
| CN109842088A (en) * | 2017-11-27 | 2019-06-04 | 深圳中电长城信息安全***有限公司 | A kind of protection circuit, circuit protection method and equipment |
| CN110568331A (en) * | 2019-09-17 | 2019-12-13 | 珠海格力电器股份有限公司 | Arc fault detection method and protection device |
| CN111508418A (en) * | 2020-05-12 | 2020-08-07 | Tcl华星光电技术有限公司 | Driving circuit and driving method of display device |
| US10837988B2 (en) | 2018-08-31 | 2020-11-17 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Correction method, correction device, and display device |
| CN112462912A (en) * | 2020-11-20 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Server power supply method and related equipment |
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| CN112736839A (en) * | 2020-12-11 | 2021-04-30 | 苏州浪潮智能科技有限公司 | Overcurrent detection and protection method, system and medium |
| CN112736842A (en) * | 2020-12-17 | 2021-04-30 | 联合汽车电子有限公司 | Multi-mode intelligent electronic fuse and control method thereof |
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| CN107947125A (en) * | 2017-11-02 | 2018-04-20 | 湖北三江航天万峰科技发展有限公司 | A kind of vehicle-mounted universal controller |
| CN109842088A (en) * | 2017-11-27 | 2019-06-04 | 深圳中电长城信息安全***有限公司 | A kind of protection circuit, circuit protection method and equipment |
| CN108601135A (en) * | 2018-03-02 | 2018-09-28 | 长沙凯上电子科技有限公司 | A kind of intelligent power control circuit and its control method |
| CN108839581A (en) * | 2018-06-29 | 2018-11-20 | 北京新能源汽车股份有限公司 | Electric car method for controlling power supply, device and equipment |
| CN109149514A (en) * | 2018-08-21 | 2019-01-04 | 广东安居宝数码科技股份有限公司 | Output protection circuit and control method, the building speakerphone of power supply |
| CN109144160A (en) * | 2018-08-31 | 2019-01-04 | 重庆惠科金渝光电科技有限公司 | A kind of bearing calibration and device |
| US10837988B2 (en) | 2018-08-31 | 2020-11-17 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Correction method, correction device, and display device |
| CN109324220A (en) * | 2018-09-06 | 2019-02-12 | 上海有个机器人有限公司 | Robot door-plate over-current protection method and system, storage medium and terminal |
| CN109713637B (en) * | 2018-12-27 | 2020-09-15 | 惠科股份有限公司 | Overcurrent protection method, overcurrent protection circuit and display device |
| CN109713637A (en) * | 2018-12-27 | 2019-05-03 | 惠科股份有限公司 | A kind of over-current protection method, current foldback circuit and display device |
| US11646565B2 (en) | 2018-12-27 | 2023-05-09 | HKC Corporation Limited | Overcurrent protection method, overcurrent protection circuit, and display device |
| CN110568331A (en) * | 2019-09-17 | 2019-12-13 | 珠海格力电器股份有限公司 | Arc fault detection method and protection device |
| CN110568331B (en) * | 2019-09-17 | 2021-08-20 | 珠海格力电器股份有限公司 | Arc fault detection method and protection device |
| CN113312681A (en) * | 2020-02-26 | 2021-08-27 | 神讯电脑(昆山)有限公司 | Electronic device and circuit protection method thereof |
| WO2021185088A1 (en) * | 2020-03-16 | 2021-09-23 | 天扬精密科技股份有限公司 | Current overload protection apparatus |
| CN111508418A (en) * | 2020-05-12 | 2020-08-07 | Tcl华星光电技术有限公司 | Driving circuit and driving method of display device |
| CN113682248A (en) * | 2020-05-19 | 2021-11-23 | 上汽通用汽车有限公司 | Automobile-used intelligent fuse box with drive and guard action |
| CN112462912A (en) * | 2020-11-20 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Server power supply method and related equipment |
| CN112600486A (en) * | 2020-12-03 | 2021-04-02 | 格力电器（武汉）有限公司 | Load power supply current protection circuit and method |
| CN112736839A (en) * | 2020-12-11 | 2021-04-30 | 苏州浪潮智能科技有限公司 | Overcurrent detection and protection method, system and medium |
| CN112736839B (en) * | 2020-12-11 | 2023-01-10 | 苏州浪潮智能科技有限公司 | Overcurrent detection and protection method, system and medium |
| CN112736842A (en) * | 2020-12-17 | 2021-04-30 | 联合汽车电子有限公司 | Multi-mode intelligent electronic fuse and control method thereof |
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