CN211348568U - Automatic test equipment for comprehensive parameters of storage battery - Google Patents
Automatic test equipment for comprehensive parameters of storage battery Download PDFInfo
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- CN211348568U CN211348568U CN201921949965.XU CN201921949965U CN211348568U CN 211348568 U CN211348568 U CN 211348568U CN 201921949965 U CN201921949965 U CN 201921949965U CN 211348568 U CN211348568 U CN 211348568U
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Abstract
The utility model relates to the field of test equipment, and discloses automatic test equipment for comprehensive parameters of a storage battery, which comprises a sampling circuit, a singlechip control circuit, a display module, a selection switch input circuit, a MOS (metal oxide semiconductor) drive circuit and a power module, wherein the sampling circuit, the display module, the selection switch input circuit, the MOS drive circuit and the power module are all connected with the singlechip control circuit; the power module comprises a voltage input end, a first triode, a first resistor, a second triode, a second resistor, a first diode, a second diode, a first capacitor, a third resistor and a voltage output end, wherein the voltage input end is connected with a base electrode of the first triode, an emitting electrode of the first triode is grounded, and a collecting electrode of the first triode is connected with one end of the first resistor. Implement the utility model discloses an automatic test equipment of battery comprehensive parameter has following beneficial effect: the circuit has higher safety and reliability and can meet the requirement on power supply safety.
Description
Technical Field
The utility model relates to a test equipment field, in particular to battery comprehensive parameter automatic test equipment.
Background
At present, the detection of a direct current power supply does not have equipment for adjusting alternating current input voltage, and only can adopt a commercial power alternating current power supply, so that the parameters of voltage stabilization precision, current stabilization precision and ripple factor under the condition of alternating current input voltage change cannot be detected. In order to solve the problem that the detection equipment does not obtain the actual operation parameters of the direct-current power supply system, the storage battery comprehensive parameter tester can be used for detecting and testing the capacity of the storage battery pack and accurately and reliably testing the parameters of the direct-current power supply system, such as voltage stabilization precision, current stabilization precision, ripple system, discharge capacity and the like. However, in the power supply part of some storage battery comprehensive parameter testers in the prior art, due to the lack of corresponding circuit protection functions, such as the lack of current limiting protection functions, the safety and reliability of the circuit are low, and the requirement on power supply safety cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, the security that provides a circuit is higher with the reliability, can satisfy the battery comprehensive parameter automatic test equipment to the requirement of power supply safety.
The utility model provides a technical scheme that its technical problem adopted is: the automatic testing equipment for the comprehensive parameters of the storage battery is constructed and comprises a sampling circuit, a single chip microcomputer control circuit, a display module, a selection switch input circuit, an MOS (metal oxide semiconductor) driving circuit and a power module, wherein the sampling circuit, the display module, the selection switch input circuit, the MOS driving circuit and the power module are all connected with the single chip microcomputer control circuit;
the power supply module comprises a voltage input end, a first triode, a first resistor, a second triode, a second resistor, a first diode, a second diode, a first capacitor, a third resistor and a voltage output end, wherein one end of the voltage input end is connected with the base electrode of the first triode, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with one end of the first resistor, the other end of the first resistor is respectively connected with the base electrode of the second triode and one end of the second resistor, the emitting electrode of the second triode is respectively connected with the other end of the second resistor and the other end of the voltage input end, the collecting electrode of the second triode is connected with the anode of the first diode, and the cathode of the first diode is respectively connected with one end of the third resistor and the cathode of the second diode, the other end of the third resistor is connected with the voltage output end, the anode of the second diode is connected with one end of the first capacitor, and the other end of the first capacitor is grounded.
In the automatic testing equipment for comprehensive parameters of storage battery, the resistance of the third resistor is 37k Ω.
In the automatic testing equipment for comprehensive parameters of storage battery, the power module further comprises a third diode, the anode of the third diode is connected with one end of the voltage input end, and the cathode of the third diode is connected with the base of the first triode.
In the automatic testing equipment for comprehensive parameters of storage battery of the present invention, the model of the third diode is S-183T.
In the automatic testing equipment for comprehensive parameters of storage battery, the power module further comprises a fourth diode, the anode of the fourth diode is connected with the other end of the voltage input end, and the cathode of the fourth diode is connected with the emitter of the second triode.
In the automatic testing equipment for comprehensive parameters of storage battery of the present invention, the model of the fourth diode is E-202.
In the automatic testing equipment for comprehensive parameters of storage battery, the first triode is an NPN-type triode.
In the automatic testing equipment for comprehensive parameters of storage battery, the second triode is a PNP type triode.
Implement the utility model discloses an automatic test equipment of battery comprehensive parameter has following beneficial effect: owing to be equipped with sampling circuit, single chip microcomputer control circuit, display module, selection switch input circuit, MOS drive circuit and power module, power module includes voltage input end, first triode, first resistance, second triode, second resistance, first diode, second diode, first electric capacity, third resistance and voltage output end, and the third resistance is used for carrying out current-limiting protection, consequently the utility model discloses the security and the reliability of circuit are higher, can satisfy the requirement to power supply safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an automatic testing apparatus for comprehensive parameters of a storage battery according to the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses in the embodiment of the automatic test equipment of battery comprehensive parameter, its structural schematic diagram of the automatic test equipment of battery comprehensive parameter is shown in FIG. 1. In fig. 1, the automatic test equipment for comprehensive parameters of the storage battery comprises a sampling circuit 1, a single chip microcomputer control circuit 2, a display module 3, a selection switch input circuit 4, an MOS drive circuit 5 and a power module 6, wherein the sampling circuit 1, the display module 3, the selection switch input circuit 4, the MOS drive circuit 5 and the power module 6 are all connected with the single chip microcomputer control circuit 2.
The sampling circuit 1 sends the storage battery voltage and discharge current signals to the single chip microcomputer control circuit 2, and the single chip microcomputer control circuit 2 sends the calculation result to the display module 3 for display. When a single group and a single section have the selection function, the selection switching value is sent to the singlechip control circuit 2, the judgment is correct and wrong, an error signal is displayed when the selection is wrong, an operator is reminded to reselect, and meanwhile, the output of the singlechip control circuit 2 is connected with a discharge control element driving circuit, so that the corresponding discharge control tube is in a work preparation state.
In this embodiment, the sampling circuit 1, the single chip microcomputer control circuit 2, the display module 3, the selection switch input circuit 4, and the MOS drive circuit 5 are all implemented by using a structure in the prior art, and the working principle thereof is also the working principle in the prior art, which is not described here.
Fig. 2 is a schematic circuit diagram of the power module in this embodiment, in fig. 2, the power module 6 includes a voltage input terminal Vin, a first transistor Q1, a first resistor R1, a second transistor Q2, a second resistor R2, a first diode D1, a second diode D2, a first capacitor C1, a third resistor R3, and a voltage output terminal Vo, wherein one end of the voltage input terminal Vin is connected to a base of the first transistor Q1, an emitter of the first transistor Q1 is grounded, a collector of the first transistor Q1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to a base of the second transistor Q2 and one end of the second resistor R2, an emitter of the second transistor Q2 is connected to the other end of the second resistor R2 and the other end of the voltage input terminal Vin, a collector of the second transistor Q2 is connected to an anode of the first diode 1, a cathode of the first diode D5 is connected to a cathode of the first resistor R3, the other end of the third resistor R3 is connected to the voltage output Vo, the anode of the second diode D2 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
In this embodiment, the third resistor R3 is a current limiting resistor for performing current limiting protection. The current limiting protection principle is as follows: when the electric current of the branch road that third resistance R3 belongs to is great, can reduce the size of the electric current of the branch road that third resistance R3 belongs to through this third resistance R3, make it keep at normal operating condition, and be unlikely to because of the electric current too big component in leading to burning out the circuit, consequently the utility model discloses the security and the reliability of circuit are higher, can satisfy the requirement to power supply safety. It should be noted that, in the present embodiment, the resistance of the third resistor R3 is 37k Ω. Of course, in practical applications, the resistance of the third resistor R3 may be adjusted according to specific situations, that is, the resistance of the third resistor R3 may be increased or decreased according to specific situations.
The working principle of the power module 6 is as follows: when a high level is inputted from one end of the voltage input terminal Vin to the base of the first transistor Q1, the voltage value is 3.3V, the first transistor Q1 is turned on, and since the collector of the first transistor Q1 is grounded, one end of the first resistor R1 is also grounded. The other end of the voltage input terminal Vin inputs 18V voltage to the second resistor R2 and the emitter of the second transistor Q2, and the voltage is divided by the first resistor R1 and the second resistor R2, so that the second transistor Q2 is in saturation conduction, the collector of the second transistor Q2 outputs 18V voltage, and the 18V voltage is transmitted to the first diode D1, the voltage 18-0.8 of the cathode of the first diode D1 is 17.2V, so that the second diode D2 is cut off, and the voltage output terminal Vo outputs 17.2-0.8 of 16.4V voltage.
When the voltage input terminal Vin is at a low level, the voltage value is 0V, the voltage of the base of the first transistor Q1 is 0V, the first transistor Q1 is turned off, since the collector of the first transistor Q1 is grounded, one end of the first resistor R1 is also grounded, the voltage of the base of the second transistor Q2 is also 0V, since the voltage of the collector of the second transistor Q2 is 18V, the second transistor Q2 is turned off, and since the anode of the second diode 2 is connected with 14V, the voltage is transmitted to the voltage output terminal Vo through the second diode D2 and the third resistor R3. The first capacitor C1 can filter out high frequency interference on the polarization voltage.
In this embodiment, the first transistor Q1 is an NPN transistor, and the second transistor Q2 is a PNP transistor. Of course, in practical applications, the first transistor Q1 may be a PNP transistor, and the second transistor Q2 may be an NPN transistor, but the structure of the circuit is also changed accordingly.
In this embodiment, the power module 6 further includes a third diode D3, an anode of the third diode D3 is connected to one end of the voltage input terminal Vin, and a cathode of the third diode D3 is connected to a base of the first transistor Q1. The third diode D3 is a current limiting diode, and is used for current limiting protection of the base current of the first transistor Q1. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the base current of the first triode Q1 can be reduced by the third diode D3 to keep the base current in a normal working state, so that the components in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further improved. It should be noted that in the present embodiment, the model number of the third diode D3 is S-183T. Of course, in practical applications, the third diode D3 may also be another type of diode with similar functions.
In this embodiment, the power module 6 further includes a fourth diode D4, an anode of the fourth diode D4 is connected to the other end of the voltage input terminal Vin, and a cathode of the fourth diode D4 is connected to an emitter of the second transistor Q2. The fourth diode D4 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fourth diode D4 is located is large, the current of the branch where the fourth diode D4 is located can be reduced by the fourth diode D4, so that the branch can be kept in a normal operating state, and the device in the circuit is not burned out due to the large current, so as to further improve the safety and reliability of the circuit. It should be noted that in the present embodiment, the fourth diode D4 has a model number E-202. Of course, in practical applications, the fourth diode D4 may also be another type of diode with similar functions.
In a word, in this embodiment, because be equipped with current-limiting resistor in this power module 6, consequently the utility model discloses the security and the reliability of circuit are higher, can satisfy the requirement to power supply safety.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The automatic test equipment for the comprehensive parameters of the storage battery is characterized by comprising a sampling circuit, a single chip microcomputer control circuit, a display module, a selection switch input circuit, an MOS (metal oxide semiconductor) drive circuit and a power module, wherein the sampling circuit, the display module, the selection switch input circuit, the MOS drive circuit and the power module are all connected with the single chip microcomputer control circuit;
the power supply module comprises a voltage input end, a first triode, a first resistor, a second triode, a second resistor, a first diode, a second diode, a first capacitor, a third resistor and a voltage output end, wherein one end of the voltage input end is connected with the base electrode of the first triode, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with one end of the first resistor, the other end of the first resistor is respectively connected with the base electrode of the second triode and one end of the second resistor, the emitting electrode of the second triode is respectively connected with the other end of the second resistor and the other end of the voltage input end, the collecting electrode of the second triode is connected with the anode of the first diode, and the cathode of the first diode is respectively connected with one end of the third resistor and the cathode of the second diode, the other end of the third resistor is connected with the voltage output end, the anode of the second diode is connected with one end of the first capacitor, and the other end of the first capacitor is grounded.
2. The automatic test equipment for comprehensive parameters of storage batteries according to claim 1, characterized in that the resistance value of the third resistor is 37 kq.
3. The automatic testing equipment for the comprehensive parameters of the storage battery as claimed in claim 1, wherein the power module further comprises a third diode, the anode of the third diode is connected with one end of the voltage input end, and the cathode of the third diode is connected with the base of the first triode.
4. The automatic test equipment for the comprehensive parameters of the storage battery as claimed in claim 3, wherein the model of the third diode is S-183T.
5. The automatic test equipment for the comprehensive parameters of the storage battery as claimed in claim 1, wherein the power module further comprises a fourth diode, the anode of the fourth diode is connected with the other end of the voltage input end, and the cathode of the fourth diode is connected with the emitter of the second triode.
6. The automatic test equipment for the comprehensive parameters of the storage battery as claimed in claim 5, wherein the model of the fourth diode is E-202.
7. The automatic test equipment for the comprehensive parameters of the storage battery as claimed in any one of claims 1 to 6, wherein the first triode is an NPN type triode.
8. The automatic test equipment for the comprehensive parameters of the storage battery as claimed in any one of claims 1 to 6, wherein the second triode is a PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949965.XU CN211348568U (en) | 2019-11-12 | 2019-11-12 | Automatic test equipment for comprehensive parameters of storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949965.XU CN211348568U (en) | 2019-11-12 | 2019-11-12 | Automatic test equipment for comprehensive parameters of storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211348568U true CN211348568U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921949965.XU Active CN211348568U (en) | 2019-11-12 | 2019-11-12 | Automatic test equipment for comprehensive parameters of storage battery |
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| CN (1) | CN211348568U (en) |
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- 2019-11-12 CN CN201921949965.XU patent/CN211348568U/en active Active
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