CN207705818U - Electric power management circuit for portable three-coordinate measuring machine - Google Patents
Electric power management circuit for portable three-coordinate measuring machine Download PDFInfo
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- CN207705818U CN207705818U CN201721435895.7U CN201721435895U CN207705818U CN 207705818 U CN207705818 U CN 207705818U CN 201721435895 U CN201721435895 U CN 201721435895U CN 207705818 U CN207705818 U CN 207705818U
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Abstract
The utility model provides a kind of electric power management circuit for portable three-coordinate measuring machine, including voltage access unit, management of charging and discharging unit, the first voltage regulation unit, the second voltage regulation unit, first switch unit and voltage output unit；Voltage access unit is connect with management of charging and discharging unit and the second voltage regulation unit respectively, management of charging and discharging unit is connect with battery to be charged to charge the battery, first switch unit is connect with battery, management of charging and discharging unit and the first voltage regulation unit respectively, and the second voltage regulation unit and the first voltage regulation unit are connect with voltage output unit respectively；When using battery powering load, management of charging and discharging unit controls the conducting of first switch unit so that the voltage of battery output after the first voltage regulation unit voltage stabilizing by being transferred to voltage output unit.
Description
Technical field
The utility model is related to field of power management, and in particular to a kind of power supply pipe for portable three-coordinate measuring machine
Manage circuit.
Background technology
As electronic product increasingly tends to micromation, portability, electronic electric equipment also gets over the frequency of use of battery
Come higher.Also, nowadays society also pays special attention to the Information Security of electronic equipment, therefore large number of equipment has used external power supply
Add battery-backed power source as the design scheme of equipment power supply.
The products scheme of battery has been used, the method to charge to lithium battery is just faced with.Unreasonable charging circuit
It will lead to the rechargeable battery lost of life with charging method, the problems such as charging reliability reduces.
And for using external power supply to add the design scheme of battery-backed power source, not only it is faced with lithium battery charging, also face
Face lithium battery electric discharge management.This kind of application requirement external power supply disconnection moment needs charging and discharging lithium battery management circuit high speed to ring
It answers, allows hand over as lithium battery power supply, protection equipment safety operation.
In addition, other problems are also faced using external power supply power-up pond design scheme, such as：Adaptor voltages and lithium electricity
Cell voltage is different, causes to switch adapter and equipment obtains voltage difference after lithium battery so that load is unable to get unified specification
Burning voltage.
Utility model content
The utility model embodiment provides a kind of electric power management circuit for portable three-coordinate measuring machine, it is ensured that
Load obtains the voltage of stable unified specification.
The utility model embodiment provides a kind of electric power management circuit for portable three-coordinate measuring machine, including voltage
Access unit, management of charging and discharging unit, the first voltage regulation unit, the second voltage regulation unit, first switch unit and voltage output list
Member；
The voltage access unit is connect with the management of charging and discharging unit and second voltage regulation unit respectively, described
Management of charging and discharging unit connect with battery to be charged with give the battery charging, the first switch unit respectively with the electricity
Pond, the management of charging and discharging unit and first voltage regulation unit connection, second voltage regulation unit and described the
One voltage regulation unit is connect with the voltage output unit respectively；
When using battery powering load, the management of charging and discharging unit controls the first switch unit conducting, makes
The voltage of the battery output is obtained by being transferred to the voltage output unit after the first voltage regulation unit voltage stabilizing；
When using external power supply powering load, the management of charging and discharging unit controls the first switch unit and closes
It closes, the external voltage of the voltage access unit access is transferred to the voltage output after the second voltage regulation unit voltage stabilizing
Unit.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, further include
The input terminal of second switch unit, the second switch unit is connect with the voltage input unit, the second switch unit
Output end connect respectively with the management of charging and discharging unit and second voltage regulation unit, the management of charging and discharging unit with
The control terminal of the second switch is connected to control the break-make of the second switch unit.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
Two switch units include first switch pipe and second switch pipe；
The input terminal of the first switch pipe is connect with the voltage access unit, the output end of the first switch pipe with
The input terminal of the second switch pipe connects, the output end of the second switch pipe and the management of charging and discharging unit and described
Second voltage regulation unit connects, control terminal and the management of charging and discharging unit of the first switch pipe and the second switch pipe
Connection.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, the electricity
It includes power connector and power supply common mode filtering inductance to press access unit；
The power connector, the power supply common mode filtering inductance, the second switch unit input terminal be sequentially connected.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, the electricity
It includes filter inductance to press output unit.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
One voltage regulation unit includes the first voltage stabilizing chip, the first filter circuit and the second filter circuit, and the of first voltage stabilizing chip
One voltage input end is connect with the output end of the second switch unit, the first voltage output end of first voltage stabilizing chip with
The voltage output unit connection；
One end of first filter circuit is connect with the first voltage input terminal, first filter circuit it is another
Terminate the first earth point；One end of second filter circuit is connect with the first voltage output end, second filtered electrical
The other end on road is grounded.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
One filter circuit includes the 12nd capacitance and the 13rd capacitance of parallel connection；Second filter circuit includes the 16 of parallel connection
Capacitance, the 17th capacitance and the 18th capacitance.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
Two voltage regulation units include the second voltage stabilizing chip, third filter circuit, the 4th filter inductance；
The second voltage input terminal of second voltage stabilizing chip is connect with the output end of the second switch unit, and described
Second voltage output end, the 4th filter inductance and the voltage output unit of two voltage stabilizing chips are sequentially connected, described
One end of third filter circuit is connect with the second voltage input terminal, the other end ground connection of the third filter circuit.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
Three filter circuits include the 20th capacitance and the 21st capacitance of parallel connection.
In the electric power management circuit for portable three-coordinate measuring machine described in the utility model embodiment, described
One switch unit includes third field-effect transistor and divider resistance, the grid of the third field-effect transistor, described point
Piezoresistance and the management of charging and discharging unit are sequentially connected, and the output end of the third field-effect transistor is steady with described first
Unit connection, the input terminal of the third field-effect transistor is pressed to be connect with the battery.
The voltage and battery that the utility model respectively directly provides external power supply by using two voltage regulation units carry
The voltage of confession carries out voltage stabilizing, to which proof load obtains the voltage of stable unified specification.
Description of the drawings
Fig. 1 is a kind of knot of the electric power management circuit for portable three-coordinate measuring machine in the utility model embodiment
Structure schematic diagram.
Fig. 2 is the another kind of the electric power management circuit for portable three-coordinate measuring machine in the utility model embodiment
Structural schematic diagram.
Fig. 3 is the first game of the electric power management circuit for portable three-coordinate measuring machine in the utility model embodiment
Portion's circuit diagram.
Fig. 4 is the second game of the electric power management circuit for portable three-coordinate measuring machine in the utility model embodiment
Portion's circuit diagram.
Fig. 5 is the third office of the electric power management circuit for portable three-coordinate measuring machine in the utility model embodiment
Portion's circuit diagram.
Specific implementation mode
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and should not be understood as to this practicality
Novel limitation.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Described convenient for description the utility model and simplifying, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " first ",
" second " is used for description purposes only, and is not understood to indicate or imply relative importance or implicitly indicates indicated technology
The quantity of feature.Define " first " as a result, the feature of " second " can explicitly or implicitly include it is one or more
The feature.The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific
It limits.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be to be electrically connected or can mutually communicate；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the interaction relationship of the connection or two elements inside two elements.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features are in direct contact, and can also not be to be in direct contact but lead to including the first and second features
Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Indicate that fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the utility model.
In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.Certainly, they are only
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals
And/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate discussed various embodiments
And/or the relationship between setting.In addition, the example for the various specific techniques and material that the utility model provides, but this
Field those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.
Fig. 1 is please referred to, the utility model embodiment provides a kind of power management electricity for portable three-coordinate measuring machine
Road, including voltage access unit 101, management of charging and discharging unit 102, the first voltage regulation unit 103, the second voltage regulation unit 104, first
Switch unit 105, voltage output unit 106.
Wherein, which connects with management of charging and discharging unit 102 and the second voltage regulation unit 104 respectively
It connects, management of charging and discharging unit 102 is connect with battery 100 to be charged to charge to battery 100, and first switch unit 105 is distinguished
It is connect with battery 100, management of charging and discharging unit 102 and the first voltage regulation unit 103, the second voltage regulation unit 104 and first is steady
Pressure unit 103 is connect with voltage output unit 106 respectively.
Wherein, the voltage access unit 101 is in external power supply for being attached to access power supply, be under normal circumstances with
External adapter is attached, to the first predetermined voltage of access, such as 12V.
The management of charging and discharging unit 102 is common management of charging and discharging chip, such as the management core of model BQ24133
Piece.
First voltage regulation unit 103 is having regulation of blood pressure unit, is used to provide the second stable predetermined voltage to electricity
Output unit 106, such as the burning voltage of offer 6.5V is pressed to give the voltage output unit 106.Since battery 100 is using process
Middle voltage can be reduced as electricity is reduced, so in the Full Charge Capacity use of time 100 voltage of possible battery higher than electricity needed for load
Pressure, and under power shortage, possible voltage is less than voltage needed for load, therefore first voltage regulation unit 103 is having regulation of blood pressure list
Member is used to provide the second stable predetermined voltage and gives the electricity to voltage output unit 106, such as the burning voltage of offer 6.5V
Press output unit 106.
Second voltage regulation unit 104 is power switch voltage regulation unit, be used to provide voltage access unit 101 first
Predetermined voltage is converted to the second stable predetermined voltage to voltage output unit 106, such as provides the burning voltage of 6.5V to this
Voltage output unit 106.Since the external power supply obtained from external voltage access unit 101 is opposite burning voltage, so
Second voltage regulation unit 104 is power switch voltage regulation unit, the first predetermined voltage for being used to provide voltage access unit 101
It is converted to the second stable predetermined voltage and gives the voltage output to voltage output unit 106, such as the burning voltage of offer 6.5V
Unit 106.
When work, when using 100 powering load of battery, management of charging and discharging unit 102 controls first switch unit 105
Conducting so that the voltage that battery 100 exports after 103 voltage stabilizing of the first voltage regulation unit by being transferred to voltage output unit 106.This
When, the management of charging and discharging unit 102 pause is charged to battery 100.
When using external power supply powering load, management of charging and discharging unit 102 controls first switch unit 105 and closes,
The external voltage that voltage access unit 101 accesses is transferred to voltage output unit 106 after 104 voltage stabilizing of the second voltage regulation unit.
At this point, the management of charging and discharging unit 102 is supplied to battery after the voltage that voltage access unit 101 accesses is converted to predetermined voltage
100 charge.
From the foregoing, it will be observed that the utility model embodiment respectively directly carries external power supply by using two voltage regulation units 104
The voltage that the voltage and battery of confession provide carries out voltage stabilizing, to which proof load obtains the voltage of stable unified specification.
Fig. 2 is please referred to, in some embodiments, on the basis of embodiment shown in Fig. 1, this is used for portable three-coordinate survey
The electric power management circuit of amount machine further includes second switch unit 107.The input terminal of second switch unit 107 and the voltage are defeated
Enter the connection of unit 101, the output end of the second switch unit 107 respectively with the management of charging and discharging unit 102 and described
Second voltage regulation unit 104 connect, the management of charging and discharging unit 102 connect with the control terminal of the second switch unit 107 with
Control the break-make of the second switch unit 107.
When voltage access unit 101 disconnects, management of charging and discharging unit 102 controls first switch unit conducting 105, fills
Administrative unit 102 of discharging controls second switch unit 107 and closes so that the voltage that battery 100 exports passes through the first voltage regulation unit
It is transferred to voltage output unit 106 after voltage stabilizing 103；When using external power supply powering load, management of charging and discharging unit 102
It controls first switch unit 105 to close, management of charging and discharging unit 102 controls second switch unit 107 and is connected, voltage access unit
The external voltage of 101 accesses is transferred to voltage output after by second switch unit 107,104 voltage stabilizing of the second voltage regulation unit
Unit 106.
In some embodiments, referring to Fig. 3, Fig. 4, Fig. 5, wherein the P1 nodes in Fig. 3 are saved with the P1 in Fig. 4
Point connects, and the P2 nodes in Fig. 3 are connect with the P2 nodes in Fig. 5, and the P3 nodes in Fig. 4 are connect with the P3 nodes in Fig. 5, Fig. 5
In P4 nodes connect load.
Specifically, voltage access unit 101 includes power connector 1011 and power supply common mode filtering inductance L1；It is described
Power connector 1011, the power supply common mode filtering inductance L1, the second switch unit 107 input terminal be sequentially connected.
In some embodiments, which is further connected with a first resistor R1 with power supply common mode filtering inductance L1.At some
In embodiment, the voltage access unit 101 further include one be DPST types the 4th switch J1.
Wherein, the tool of power connector 1011 is that the input of adaptor power supplies anode is drawn there are three input pin, wherein pin 1
Foot, pin 2 are that adaptor power supplies input cathode input pin, and pin 3 meets the first earth point GND1.Do not have in adaptor power supplies plug
When there are insertion power connector 1011, due to 1011 inside elastic piece structure of power connector, lead to 2 unicom of pin 3 and pin,
And if when adaptor power supplies plug is inserted into power connector 1011, since adaper plug squeezes 2 shrapnel of pin, cause
Pin 2 and pin 3 detach.
Wherein, second switch unit 107 includes first switch pipe Q1, second switch pipe Q2, third capacitance C3, the 4th electricity
Hold C4 and thirteenth resistor R13.
The input terminal of first switch pipe Q1 is connect with voltage access unit 101, the output end of first switch pipe Q1 and institute
State the input terminal connection of second switch pipe Q2, output end (P2 nodes) and the management of charging and discharging list of the second switch pipe Q2
The control terminal of member 102 and second voltage regulation unit 104 connection, the first switch pipe Q1 and the second switch pipe Q2
It is connect with the management of charging and discharging unit 102.
In the present embodiment, RC filter circuits are also associated between the output end and the P2 nodes of second switch pipe Q2,
The RC filter circuits include the tenth resistance R10 and the 5th capacitance C5 of parallel connection.
First voltage regulation unit 103 includes the first voltage stabilizing chip U2, the first filter circuit 1031 and the second filter circuit
1032, the first voltage input terminal Vin of the first voltage stabilizing chip U2 is connect with the output end of the first switch unit 105,
The first voltage output end VOUT of the first voltage stabilizing chip U2 is connect with the voltage output unit 106 (that is to say in Fig. 4
P3 nodes are connect with the P3 nodes in Fig. 5).
One end of first filter circuit 1031 is connect with the first voltage input terminal Vin, first filter circuit
1031 the first earth point of another termination GND1；One end of second filter circuit 1032 and the first voltage output end
Vou connections, the other end ground connection of second filter circuit 1032, connect with the first earth point GND1 in the present embodiment.
Wherein, which includes the 12nd capacitance C12 and the 13rd capacitance C13 in parallel.This
Two filter circuits 1032 include the 16th capacitance C16, the 17th capacitance C17 and the 18th capacitance C18 of parallel connection.
Wherein, the second voltage regulation unit 104 includes the second voltage stabilizing chip U3, third filter circuit 1041, the 4th filter circuit
1044, the 4th filter inductance L6.
Second voltage input terminal+the in of second voltage stabilizing chip U3 connect with the output end of the second switch unit 107 (
It is that P2 nodes in Fig. 3 are connected with the P2 nodes in Fig. 5), the second voltage output end of the second voltage stabilizing chip U3
Output, the 4th filter inductance L6 and the voltage output unit 106 are sequentially connected, and the one of the third filter circuit 1041
End is connect with the second voltage input terminal+in, the other end ground connection of the third filter circuit 1041.4th filter circuit
1042 one end is connect with the common node of the 4th filter inductance L6 and voltage output unit 106, other end ground connection.4th
Filter circuit 1042 includes the 23rd capacitance C23 and the 24th capacitance C24 of parallel connection.The third filter circuit 1041
Including the 20th capacitance C20 and the 21st capacitance C21 in parallel.
In some embodiments, which includes third field-effect transistor Q3 and divider resistance
Grid, the divider resistance R11 and the management of charging and discharging unit 11 of R11, the third field-effect transistor Q3 are successively
Connection, the output end of the third field-effect transistor Q3 are connect with first voltage regulation unit 103, first field-effect
The input terminal of transistor Q1 is connect with the battery 100.
Wherein, voltage output unit 106 includes filter inductance L4.
Wherein, J2, J3 in Fig. 3-Fig. 5 are switch.
Wherein, the electric power management circuit for being used for portable three-coordinate measuring machine further include Schottky diode T1 and
4th resistance R4, the management of charging and discharging unit 102 that is to say that chip U1 passes through the 4th resistance R4's and switching transistor T1
Control terminal connects, and the input terminal of switching transistor T1 is connect with the voltage access unit 101, the output of switching transistor T1
End is connect with the battery 100.Schottky diode T1 is combined by what two diodes combined, such as model BAT54CL.Xiao
The effect of special based diode T1 is, as long as battery or external power supply exist, then can be filled by Schottky diode T1
Electric discharge administrative unit 102 that is to say that chip U1 provides operating current, and can prevent from existing simultaneously when external power supply and battery
When electric current pour in down a chimney mutually, interact.And the 4th resistance R4 accessed can play energy saving, reduction power consumption.
The utility model has the advantages that：
1, the design has DPST switch disconnectors, can cut off battery and external adapter electric power network simultaneously, safety
Property is very high；
2, the design has the DC socket of with can disconnecting battery voltage stabilizing chip network, and electricity is disconnected when for being inserted into adapter
Pond regulator circuit, it is energy saving；
3, the design has adaptor voltages network and the independent steady pressure treatment ability of cell voltage network, is both avoided that voltage
Conflict, also can be energy saving；
4, the design has cell voltage having regulation of blood pressure ability, and rear class power circuit obtains voltage stabilization, not with electricity
Pond electricity is fluctuated and is fluctuated；
5, the design has multiple voltage sources it can be selected that late-class circuit can flexibly be connected to corresponding voltage according to demand
On.
6, the design has external adapter and battery rapid switching function, when using external adapter power supply, from
It is dynamic to be switched to external power supply power supply so that battery life longest can be quickly switched into lithium when external adaptor power supplies are pulled out
Battery powered ensures that power supply target device operation data is reliable.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the utility model.In this explanation
In book, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
In conclusion although the utility model is disclosed above with preferred embodiment, above preferred embodiment is not used
To limit the utility model, those skilled in the art can make without departing from the spirit and scope of the utility model
It is various to change and retouch, therefore the scope of protection of the utility model is subject to the range that claim defines.
Claims (10)
1. a kind of electric power management circuit for portable three-coordinate measuring machine, which is characterized in that including voltage access unit, fill
Electric discharge administrative unit, the first voltage regulation unit, the second voltage regulation unit, first switch unit and voltage output unit；
The voltage access unit is connect with the management of charging and discharging unit and second voltage regulation unit respectively, the charge and discharge
Electric administrative unit connect with battery to be charged with give the battery charging, the first switch unit respectively with the battery,
The management of charging and discharging unit and first voltage regulation unit connection, second voltage regulation unit and the first voltage stabilizing list
Member is connect with the voltage output unit respectively；
When using battery powering load, the management of charging and discharging unit controls the first switch unit conducting so that institute
The voltage of battery output is stated by being transferred to the voltage output unit after the first voltage regulation unit voltage stabilizing；
When using external power supply powering load, the management of charging and discharging unit controls the first switch unit and closes, institute
The external voltage for stating the access of voltage access unit is transferred to the voltage output unit after the second voltage regulation unit voltage stabilizing.
2. the electric power management circuit according to claim 1 for portable three-coordinate measuring machine, which is characterized in that also wrap
Second switch unit is included, the input terminal of the second switch unit is connect with the voltage input unit, the second switch list
The output end of member is connect with the management of charging and discharging unit and second voltage regulation unit respectively, the management of charging and discharging unit
It is connect with the control terminal of the second switch to control the break-make of the second switch unit.
3. the electric power management circuit according to claim 2 for portable three-coordinate measuring machine, which is characterized in that described
Second switch unit includes first switch pipe and second switch pipe；
The input terminal of the first switch pipe is connect with the voltage access unit, the output end of the first switch pipe with it is described
The input terminal of second switch pipe connects, the output end of the second switch pipe and the management of charging and discharging unit and described second
Voltage regulation unit connects, and control terminal and the management of charging and discharging unit of the first switch pipe and the second switch pipe connect
It connects.
4. the electric power management circuit according to claim 2 for portable three-coordinate measuring machine, which is characterized in that described
Voltage access unit includes power connector and power supply common mode filtering inductance；
The power connector, the power supply common mode filtering inductance, the second switch unit input terminal be sequentially connected.
5. the electric power management circuit according to claim 1 for portable three-coordinate measuring machine, which is characterized in that described
Voltage output unit includes filter inductance.
6. the electric power management circuit according to claim 2 for portable three-coordinate measuring machine, which is characterized in that described
First voltage regulation unit includes the first voltage stabilizing chip, the first filter circuit and the second filter circuit, first voltage stabilizing chip
First voltage input terminal is connect with the output end of the second switch unit, the first voltage output end of first voltage stabilizing chip
It is connect with the voltage output unit；
One end of first filter circuit is connect with the first voltage input terminal, another termination of first filter circuit
First earth point；One end of second filter circuit is connect with the first voltage output end, second filter circuit
The other end is grounded.
7. the electric power management circuit according to claim 6 for portable three-coordinate measuring machine, which is characterized in that described
First filter circuit includes the 12nd capacitance and the 13rd capacitance of parallel connection；Second filter circuit includes the ten of parallel connection
Six capacitances, the 17th capacitance and the 18th capacitance.
8. the electric power management circuit according to claim 2 for portable three-coordinate measuring machine, which is characterized in that described
Second voltage regulation unit includes the second voltage stabilizing chip, third filter circuit, the 4th filter inductance；
The second voltage input terminal of second voltage stabilizing chip is connect with the output end of the second switch unit, and described second is steady
Second voltage output end, the 4th filter inductance and the voltage output unit of pressure chip are sequentially connected, the third
One end of filter circuit is connect with the second voltage input terminal, the other end ground connection of the third filter circuit.
9. the electric power management circuit according to claim 8 for portable three-coordinate measuring machine, which is characterized in that described
Third filter circuit includes the 20th capacitance and the 21st capacitance of parallel connection.
10. the electric power management circuit according to claim 2 for portable three-coordinate measuring machine, which is characterized in that institute
It includes third field-effect transistor and divider resistance, the grid of the third field-effect transistor, institute to state first switch unit
It states divider resistance and the management of charging and discharging unit is sequentially connected, the output end of the third field-effect transistor and described the
One voltage regulation unit connects, and the input terminal of the third field-effect transistor is connect with the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721435895.7U CN207705818U (en) | 2017-10-31 | 2017-10-31 | Electric power management circuit for portable three-coordinate measuring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721435895.7U CN207705818U (en) | 2017-10-31 | 2017-10-31 | Electric power management circuit for portable three-coordinate measuring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207705818U true CN207705818U (en) | 2018-08-07 |
Family
ID=63021906
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721435895.7U Active CN207705818U (en) | 2017-10-31 | 2017-10-31 | Electric power management circuit for portable three-coordinate measuring machine |
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| Country | Link |
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| CN (1) | CN207705818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919698A (en) * | 2017-10-31 | 2018-04-17 | 广州充圆精密光电仪器有限公司 | Electric power management circuit for portable three-coordinate measuring machine |
-
2017
- 2017-10-31 CN CN201721435895.7U patent/CN207705818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919698A (en) * | 2017-10-31 | 2018-04-17 | 广州充圆精密光电仪器有限公司 | Electric power management circuit for portable three-coordinate measuring machine |
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