TWM275413U - Automatic DC power detection device - Google Patents

Description

M275413

[Technical field to which the new type belongs] This creative system provides a direct access, electric man and machine power, price measurement, display, companion trout thunder policy, measurement, display, protection. Abstract: DC battery power supply under load conditions [prior art] DC power supply device in industry and supply system and DC power supply device The "b $ conversion" aspect involved in the detection and protection of the source of the DC power source has been developed. There are many different types of direct-produced mines, such as direct-produced mines, 庵, 寸, 寸, 寸, 而, and the like. The detection and protection are specially optimized under the conditions of / Λ ,,,,, and industrial. This creation is specially designed to solve the problem of installing in a vehicle DC power supply + 钔 忭 里, six, s Li Congshi + Λ _ Due to the forgetting to turn off the load, the generator i 丨 master $ ^^ thinking H caused by overvoltage, overcurrent, and moon y, providing a better choice for vehicle power protection. -[New content] Each benefit The main purpose of this creation is to avoid system failure under direct current power supply under various load conditions. An automatic detection device is provided to detect the working condition and display the system status. Another purpose of this creation is to provide an adjustable timer to facilitate automatic detection of the working condition of the DC power supply in a set time cycle. Another purpose of this creation is to provide a voltage detection and over-voltage protection device that compares the reference voltage with the measured voltage and displays or closes the working circuit when abnormal, to facilitate over-current of the DC power supply device and related working systems. I (over v〇l tage) protection or low voltage (1〇w vol tage) protection

I No. 9322091] M275413 said, creation instructions (2) protection. The other purpose of this creation is a # # device, which uses the reference level and measurement% machine detection and over-current protection T as a circuit to facilitate the f-current power supply device ":: Li :: constantly closed (〇vercurrent ) Protection. 丨 统 m overcurrent Another purpose of this creation is to provide — compare the test level with the measured voltage, and cut the protection device, which will participate in the DC power supply device and related industries =: abnormal When the working circuit is closed for protection, the system is overloaded (over 1〇ading). Therefore, in order to complete the above purpose, the protection device performs over-voltage and thunder-cooling: The author provides a circuit test device, which includes: < The DC power source for human overload protection automatically detects the DC power source. It shows that Pei sets the condition and includes: 4 $ and shows the working state of the DC power source. An adjustable timing line. The combination of its profitable multiplier device and the electronic device. Time counting device and electronic-electronic switching circuit: ϊ = period; display state switching; σ power detection device for load and display & a plurality of load devices to facilitate automatic detection of _ ^ device, and includes 4. DC power supply in different system states-a display device that meets the preset load conditions; government-seeking loads and DC power supply devices-a voltage signal detection device, and a current signal detection device-1 for voltage state processing; The DC power protection device performs current state processing at / f; -------- Protecting the DC power supply device and related work M275413 932 号 93220911 Λ_Ε Correction g, creation description (3) device, and contains: voltage) protection device to facilitate low-voltage protection of DC power supply devices and related working systems; an over voltage protection device to facilitate over-voltage protection of DC power supply devices and related working systems; an over-current (over CUrrent) protection device Overcurrent protection to facilitate the DC power supply device and related working systems; An over load protection device to protect the overcurrent protection of the related working system to the DC power supply device. 上述 The above and other purposes of this creation, 4 characteristics, and advantages This will be described in detail, accompanied by figures, and will be apparent from the appended claims. The diagram is a schematic diagram of the protection of a DC battery power source according to a preferred embodiment of the present invention. As shown in the figure, a timing countermeasure is shown. The circuit 101, a counter circuit 102, and an AND logic gate 103 are connected. = Electrical connection relationship As described below: The time generating circuit i 〇i generates a basic time, the time generating circuit m outputs gas, and the counting wheel of the circuit H2 enters the end. The counter circuit 102 outputs twelve logic, 3 of the An input terminal. In this design example, in order to make the whole: Gu Yi design 'can generate a fixed base period of the 101 circuit at that time ^ interval τ as the basis, and cooperate with the counter circuit 102 to generate an adjustable test ^ τ To meet the needs of the device under different operating conditions. Dream department fights like "quote again. Ten times, when T = η T, an AND logic gate 20 1 is used

Page 9 ----- Tool change ° The inputs of A N D logic gate 2 0 1 and A N D logic I.. &Quot; 7 '—-— ^ ------- M275413

Gate 1 〇 3 and voltage detection and over-voltage protection circuit 3 〇 output of over-voltage protection circuit 3 0 2 and current detection and over-current protection circuit 4 〇 over-current (濩 circuit 4 0 4 output terminal power The operation circuit is formed. After the operation circuit gets the input signal from the timing circuit 4 1 0 through the electrical coupling point with the AND logic gate 103, the device is turned on and the test is started. The voltage The detection and voltage abnormality protection circuit 30 includes a voltage detection circuit 301, a voltage abnormality protection circuit 302, an over-voltage blocking circuit, 3.0, and a low-voltage blocking circuit 304. The voltage detection circuit 3 〇1 is used to detect and compare the load voltage. The input terminal of the voltage detection circuit 30i is connected to the load connected to the DC power supply and the output terminal of the voltage regulator circuit 60 of the reference voltage circuit 60. The voltage anomaly protection circuit 30 is used to detect and protect the DC power source. The input terminals of the voltage anomaly protection circuit 30 are respectively coupled to the DC voltage source and the output terminal of the voltage stabilization circuit 60 of the reference voltage circuit 60.忒 Voltage detection circuit 3 〇1 comparison The level of the load voltage and the reference voltage ve f. When the comparison value overflows the standard, a warning signal is transmitted to the over-voltage lockout circuit 3 03. At this time, the over-voltage # lamp LED1 lights, and the The voltage blocking circuit 303 cuts off the system to protect the load and transmits a cut-off signal (Cut-off signal) to the AND logic gate 201 of the operation 0 circuit 20, cuts off the test procedure and enters the power discharge mode to avoid battery damage. The voltage is different; ^ The protection circuit 302 compares the level of the load voltage with the reference voltage Vref. When the comparison value is lower than the standard, it transmits a cut-off signal to the AND logic gate 2 of the operation circuit 2 〇1. Cut off the test program or direct discharge mode to avoid battery damage.

M275413 __Case No. 93220911 _ Year Month Day __ Revision 4. Creation Instructions (5) Circuit 3 0 2 can also be a 10 P amplifier, but the voltage detection circuit 3 〇1 and the overvoltage protection circuit 302 are not only OP Amplifiers can also be various types of differential circuits that can be used for voltage comparison amplification. The blocking circuit 303 can be a 4013IC, but the blocking circuit 303 is not only a 40 13 1C, but also various types of circuits that can be used for system blocking (L a t c h). 4 current detection and overcurrent protection circuit 4 〇 including a current detection circuit 4 01, a current amplification circuit 4 〇2, a current comparison circuit 4 〇3, the current comparison circuit further includes a first stage current comparison circuit 4 〇 3, the second stage current comparison circuit 40 32, a current abnormal protection circuit 404, a selection circuit 405. The input terminal of the current detection circuit 401 is coupled to a DC power source, and the output terminal is connected to the input terminal of the current amplification circuit 402. An input terminal of the current amplification circuit 4 02 is coupled to an output terminal of the current detection circuit 401, and the output terminal is coupled to the current comparison circuit 403. An input terminal of the first-stage current comparison circuit of the current comparison circuit 4 03 is coupled to an output terminal of the current amplification circuit 40 2, and an output terminal is coupled to an input terminal of the selection circuit 40 5. The input terminal of the second-stage current comparison circuit 4 of the current comparison circuit 4 0 3 is coupled to the output terminal of the current amplification circuit 40 2. The second-stage current of the current comparison circuit 403 is higher than that of the car parent circuit 4 0 The output of 3 2 and the input of the selection circuit 4 05 control the terminal. The input terminal of the overcurrent protection circuit 404 is connected to the input terminal of the current amplifier circuit 402. The output terminal of the overcurrent protection circuit 400 is connected to one terminal of the logic gate 201. The input control terminal of the selection circuit 405 is coupled to the output terminal of the current comparison circuit 4031. The input control terminal of the selection circuit 45 is coupled to the output terminal of the current comparison circuit 4032. The input terminal of this selector 405 is connected to the voltage of the DC power supply connected load. The output of this selector 4 05 has three kinds of output corresponding to different loads according to the signal of the input terminal.

M275413

Correction " Tiger 93220911 Horse, Creation Note (6) 5 0 1, 5 0 2, 5 0 3 coupling. The current detection circuit 401 is used to obtain the power signal of the DC power supply. The current signal is converted into a voltage signal through the coil induction. The conversion ratio is determined by the secondary test and secondary test coils, and the circuit isolation is achieved through the current-voltage conversion mechanism. The effect can prevent the control circuit from being interfered by the overload of the power circuit, and simultaneously achieve the purpose of signal conversion and circuit protection. The current amplifying circuit 4 02 linearly amplifies the detection signal from the current detecting circuit 4 01 so that the current comparing circuit 40 3 compares and grades the signals, and at the same time reduces the output impedance to increase the energy transmission efficiency. A current comparison circuit 4403 is included in the first-stage current comparison circuit 4301, and the second-stage current comparison circuit 4032 is used for current classification analysis, and cooperates with the load selection circuit 4005 to determine the appropriate load size corresponding to the relative Comparison line. The load selection circuit 405 is a level-like circuit, which is used to classify the voltage levels from the current comparison circuit 403, and selects a signal to be placed in the load corresponding circuit 50. The child current detection circuit 4 〇1 may be a Hall current sensor (Ha i 丄 SjnSor), but the current detection circuit 401 is not only a Hall current sensor (Hall Sensor), but also various types Can be used for current-voltage conversion circuits. a Hai current amplification circuit 402, the current comparison circuit 403 includes a first current sinking comparison circuit 403 1, a second-stage current comparison circuit 403, an over-current protection circuit 404, both can be 10p Amplifiers, but not only 0p amplifiers, but also various types of differential circuits that can be used for voltage comparison amplification. The load selection circuit 40 5 may be a 40 5 1 1 C, but the load selection circuit 405 is not only a 4051IC, but also various types of circuits that can be used for current classification. In the truth value table of 4051IC, the current level There are the following classifications: When the current is less than 10 amps, it is regarded as a helmet.

Page 12 M275413 ^ 3220911_i 一 ^ a ^ Luxury g, Creative Instructions (7) '~ 2. When the current reaches 10 amps, it is regarded as the first when the current is less than 20 amps 3. The current is 20 amps and less than 3. Ampere hour, regarded as a dagger 4. When the current reaches 30 Amperes, it is regarded as a third-level negative when the current is less than 50 Amperes. 5. When the current exceeds 50 Amperes, the battery fault signal LED 2 is lit; Including the first-stage load corresponding ratio comparator 501, the first, and the load-corresponding ratio vehicle driver benefit 5 0 2, and the second-stage load corresponding to the comparator 503. The loads at all levels of the eighth middle school include more than one set of display circuits and load resistances. When the f-load status is different, compare the selection circuit 405 with the above-mentioned current field ^ to determine the corresponding electrical percentage. When the voltage signal corresponding to the relative load is sent to one of the negative cool corresponding comparators 501, 502, and 503, if there is a load voltage or ^ reference voltage, the corresponding comparator will send a “warning signal to a low level”. 304 At this time, the battery fault signal lamp LED2 is on. Λ 芩 The voltage test circuit 60 includes a voltage stabilizing circuit 601, which is used to provide the system with stable reference power yref. "This case may be used by anyone who is familiar with this technology. All kinds of modifications are thought, but they are not inferior to those who want to protect the scope of patent application.

Page 13 M275413 _Case No. 93220911_Year Month and Day_Amendment Simple Description of Drawings [Simple Description of Drawings] The first drawing is a circuit diagram of a preferred embodiment of the creation. The second figure is a block diagram of the creative process. The third picture is the logical flow chart of the creation. [Description of main component symbols]

10 Timing circuit 1 0 1 Time generation circuit 1 0 2 Counter circuit meal 03 Timing circuit AND logic gate 20 Operating circuit 201 Operating circuit AND logic gate 30 Voltage detection and voltage abnormal protection circuit 3 0 1 Voltage detection circuit 302 Voltage abnormal protection Circuit 3 0 3 Over voltage blocking circuit 304 Low voltage blocking circuit

4 0 Current detection and overcurrent protection circuit 0 0 1 Current detection circuit 4 0 2 Current amplifier circuit 4 ◦ 3 Current comparison circuit 4 0 3 1 First-stage current comparison circuit 4 0 3 2 Second-stage current comparison circuit 4 ◦ 4 overcurrent protection circuit

Page 14 M275413 _Case No. 93220911_Year Month Day_Modified illustration of the diagram 4 0 5 Load selection circuit 50 This load corresponds to the circuit 5 0 1 The first load corresponds to the comparator 5 0 2 The second load corresponds to the comparator 5 0 3 Third-stage load corresponding comparator 60 Reference voltage circuit 6 0 1 Voltage regulator circuit LED1 Overvoltage signal lamp LED2 Battery fault signal lamp

Claims (1)

M275413 _Case No. 93220911_ 年月 日 _Character_ V. Patent Application Scope 3. The DC power source automatic detection device described in item 1 of the patent application scope, its DC power source is the vehicle battery system. 4. The automatic detection device for DC power supply as described in item 1 of the scope of patent application, its load is a passive load system. 5. The automatic detection device of DC power supply as described in item 2 of the scope of patent application, its load is a passive load system. 6. The automatic detection device of DC power supply as described in item 3 of the scope of patent application, its load is a passive load system. Page 17