CN110350620B - Low-power-consumption slip ring switching and holding device and switching and holding method - Google Patents
Low-power-consumption slip ring switching and holding device and switching and holding method Download PDFInfo
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- CN110350620B CN110350620B CN201910615694.2A CN201910615694A CN110350620B CN 110350620 B CN110350620 B CN 110350620B CN 201910615694 A CN201910615694 A CN 201910615694A CN 110350620 B CN110350620 B CN 110350620B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 84
- 238000001514 detection method Methods 0.000 claims abstract description 53
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- 229910052802 copper Inorganic materials 0.000 claims description 73
- 239000010949 copper Substances 0.000 claims description 73
- 230000008569 process Effects 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000005405 multipole Effects 0.000 abstract description 6
- 230000007958 sleep Effects 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005059 dormancy Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 238000007667 floating Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H02J7/0022—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a low-power consumption slip ring switching and maintaining device and a switching and maintaining method.A first battery pack power supply slip ring is respectively connected with a load power supply end and a first battery pack power supply end; the second battery pack power supply slip ring is respectively connected with a load power supply end and a second battery pack power supply end; the second battery pack charging slip ring is respectively connected with a charging power supply and a charging end of the second battery pack; the first battery pack charging slip ring is respectively connected with a charging power supply and a charging end of the first battery pack; the single chip microcomputer obtains the current rotation angle and rotation state of the rotation mechanism through the position detection mechanism. The single chip microcomputer can go to sleep, and the port for controlling the stepping motor can be reset and released. After the stepping motor is powered off, the position and the state are fixed. The driving mechanism is started to switch only when the voltage of the battery pack is low, and rotates by a preset angle, so that the time is short, and the power consumption is low. After the switching is completed, the device control circuit is powered off, and compared with the traditional multi-pole multi-throw band switch and a common relay in the prior art, the low power consumption is realized.
Description
Technical Field
The invention relates to the field of battery charging and discharging, in particular to a low-power-consumption slip ring switching and maintaining device and a switching and maintaining method.
Background
At present, in some power supply fields or service environments requiring battery packs for power supply, the battery packs discharge to loads when being charged, and the battery packs are difficult to float.
If two sets of battery packs are used, one set is used for power supply and the other set is used for charging. And after the charged battery pack is fully charged, switching to a power supply state, and charging the other set of battery pack. Or when the battery pack for power supply is lower than a preset threshold value, the battery pack is switched to enter a charging state, and the other set of battery pack supplies power. The problem that the battery pack is difficult to float due to the fact that the battery pack discharges for the load when the battery pack is charged can be solved, and floating charging of the battery pack is avoided.
In the switching use process of the two groups of battery packs, the switching device is also an important control element, the traditional multi-pole multi-throw wave band switch can only be manually rotated through a knob, the torsion is large, and the energy consumption is high.
The transistor switch circuit, the analog integrated circuit switch circuit and the like not only need uninterrupted long-term power on and power consumption no matter whether the output of the driving power supply driving circuit is in an on or off state, but also have conducting voltage drop or conducting resistance in the on state, so that great extra loss is caused, and even if the loss current and the power are very small, the loss is still great due to relatively limited battery capacity accumulated in long-term working of an adult.
The ordinary relay needs the coil break-make electricity just can realize the break-make conversion to need the coil to keep circular telegram, come the hold state unchangeable, current relay operating current all is too big, if the uninterrupted operation of relay, battery power can be exhausted very fast.
In the two groups of lithium battery switching systems, no matter relay switching or semiconductor power device control is carried out, the circuit is always in work, and a singlechip for controlling the switching process cannot be in low-power-consumption dormancy; when the singlechip enters low-power-consumption sleep, the output control is reset, and the current state and position cannot be maintained.
Disclosure of Invention
The invention provides a low-power consumption slip ring switching holding device which can realize state position holding after power supply switching and realize low power consumption of a control circuit in a holding stage, and the device comprises: the device comprises a singlechip, an electrical switching slip ring module, a first battery pack, a second battery pack, a driving mechanism and a charging power supply;
the electrical switching slip ring module is provided with a rotating mechanism, and the rotating mechanism is provided with a first battery pack power supply slip ring, a second battery pack charging slip ring, a first battery pack charging slip ring and a position detection mechanism;
the driving mechanism is connected with the rotating mechanism and the single chip microcomputer, receives a control instruction of the single chip microcomputer and drives the rotating mechanism to rotate to adjust the position of the sliding ring;
the first battery pack power supply slip ring is respectively connected with a load power supply end and a first battery pack power supply end;
the second battery pack power supply slip ring is respectively connected with a load power supply end and a second battery pack power supply end;
the second battery pack charging slip ring is respectively connected with a charging power supply and a charging end of the second battery pack;
the first battery pack charging slip ring is respectively connected with a charging power supply and a charging end of the first battery pack;
the position detection mechanism is connected with the single chip microcomputer, and the single chip microcomputer obtains the current rotating angle and the rotating state of the rotating mechanism through the position detection mechanism.
It should be further noted that the electrical switching slip ring module is further provided with a circuit board and a plurality of spring wires;
the rotating mechanism is provided with a convex shaft section, a switching section and a connecting section which are connected in sequence;
an axial hole and a radial through hole which are in cross connection are arranged in the convex shaft section;
an output shaft of the driving mechanism penetrates into the axial hole of the camshaft section; the radial through hole penetrates through a locking screw to fix an output shaft of the driving mechanism with the convex shaft section;
a plurality of groove rings are arranged on the switching section; the groove rings are respectively defined as a first battery pack power supply slip ring, a second battery pack charging slip ring, a first battery pack charging slip ring and a position detection mechanism;
a copper arc ring is fixedly arranged in each groove ring, and the copper arc rings and the rotating mechanism synchronously rotate;
each groove ring is electrically connected to a circuit board contact by a spring wire.
It should be further noted that the electrical switching slip ring module is further provided with a motor support and a shaft support;
the driving mechanism is fixedly connected with the motor bracket through a bolt;
a motor bearing is sleeved on the motor bracket,
an output shaft of the driving mechanism penetrates through a motor bearing of the motor bracket and extends into an axial hole of the convex shaft section;
the bottom of the shaft support and the bottom of the motor support are respectively connected with the circuit board through bolts;
the shaft support is connected with a bearing seat through a screw;
the connecting section of the rotating mechanism is inserted into a bearing hole of the bearing seat and connected in an interference fit mode.
Further, the position detection mechanism includes: a first position sensing slip ring and a second position sensing slip ring;
the electrical switching slip ring module is also provided with a first time sequence section, a second time sequence section, a third time sequence section, a fourth time sequence section and a fifth time sequence section;
three time sequence sections are pressed on a copper arc ring on the power supply slip ring of the first battery pack;
three time sequence sections are pressed on a copper arc ring on the power supply slip ring of the second battery pack;
two time sequence sections are pressed on a copper arc ring on the charging slip ring of the second battery pack;
two time sequence sections are pressed on a copper arc ring on the charging slip ring of the first battery pack;
two time sequence sections are pressed on a copper arc ring on the first position detection slip ring;
two time sequence sections are pressed on a copper arc ring on the second position detection slip ring;
a first time sequence section and a second time sequence section of a copper arc ring on the power supply slip ring of the first battery pack are respectively superposed with two time sequence sections of the copper arc ring on the charging slip ring of the second battery pack and two time sequence sections of the copper arc ring on the first position detection slip ring;
a first time sequence section and a second time sequence section of a copper arc ring on the power supply slip ring of the second battery pack are respectively superposed with two time sequence sections of the copper arc ring on the charging slip ring of the first battery pack and two time sequence sections of the copper arc ring on the second position detection slip ring;
and the third time sequence section of the copper arc ring on the first battery pack power supply slip ring is superposed with the third time sequence section of the copper arc ring on the second battery pack power supply slip ring.
The invention also provides a low-power consumption slip ring switching and maintaining method, which comprises the following steps:
the charging power supply charges the second battery pack through the second battery pack charging slip ring;
the first battery pack supplies power to a load through the first battery pack power supply slip ring;
when the single chip microcomputer detects that the voltage of the first battery pack is lower than the threshold value, the driving mechanism is controlled to operate to drive the rotating mechanism to rotate by a preset angle, and the following switching process is completed:
the charging power supply charges the first battery pack through the first battery pack charging slip ring;
the second battery pack supplies power to the load through the second battery pack power slip ring.
According to the technical scheme, the invention has the following advantages:
the scheme of the PMOS switch is replaced in the switching process, so that the problem that the battery cannot output when the port of the PMOS switch is controlled to reset and release after the single chip microcomputer is in a dormant state is solved.
The single chip microcomputer can go to sleep, and the port for controlling the stepping motor can be reset and released. Because, after the stepping motor is powered off, the position and the state are fixed.
The driving mechanism is started to switch only when the voltage of the battery pack is low, and rotates by a preset angle, so that the time is short, and the power consumption is low. After the switching is completed, the device control circuit is powered off, and compared with the traditional multi-pole multi-throw band switch and a common relay in the prior art, the low power consumption is realized.
When the main control part of the device does not carry out the switching process, the device can enter the dormancy, thereby realizing low power consumption.
The electrical switching slip ring module realizes charging switching and load power supply switching between the battery packs through an internal switching circuit, and meets the requirement of power supply state maintenance after the sleep output port of the single chip microcomputer is reset.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a low power slip ring switching retaining device;
FIG. 2 is a schematic diagram of a low power slip ring switch holding device;
FIG. 3 is a front view of an electrically switched slip ring module;
FIG. 4 is a top view of an electrically switching slip ring module;
FIG. 5 is a left side view of an electrically switched slip ring module;
FIG. 6 is a right side view of an electrically switching slip ring module;
FIG. 7 is a perspective view of an electrical switching slip ring module;
FIG. 8 is a schematic view of a rotation mechanism;
fig. 9 is a cross-sectional view of the rotating mechanism;
fig. 10 is a side view of the rotating mechanism;
FIG. 11 is a schematic view of a copper arc ring.
Detailed Description
The present invention provides a slip ring switching holding device with low power consumption, as shown in fig. 1 to 11, comprising: the device comprises a single chip microcomputer 1, an electrical switching slip ring module 2, a first battery pack 3, a second battery pack 4, a driving mechanism 5 and a charging power supply 6;
the electrical switching slip ring module 2 is provided with a rotating mechanism 11, and the rotating mechanism 11 is provided with a first battery pack power supply slip ring 14, a second battery pack power supply slip ring 15, a second battery pack charging slip ring 16, a first battery pack charging slip ring 17 and a position detection mechanism; the driving mechanism 5 is connected with the rotating mechanism 11, the driving mechanism 5 is also connected with the single chip microcomputer 1, and the driving mechanism 5 receives a control instruction of the single chip microcomputer 1 and drives the rotating mechanism 11 to rotate to adjust the position of the slip ring; the first battery pack power supply slip ring 14 is respectively connected with the power supply end of the load 7 and the power supply end of the first battery pack 3; the second battery pack power supply slip ring 15 is respectively connected with a load power supply end and a second battery pack 4 power supply end; the second battery pack charging slip ring 16 is respectively connected with the charging power supply 6 and the charging end of the second battery pack 4; the first battery pack charging slip ring 17 is respectively connected with the charging power supply 6 and the charging end of the first battery pack 3; the position detection mechanism is connected with the single chip microcomputer 1, and the single chip microcomputer 1 obtains the current rotation angle and the current rotation state of the rotation mechanism 11 through the position detection mechanism.
The charging power supply 6 can be powered by solar power generation, wind power generation, other generators, and the like.
The electrical switching slip ring module 2 may be made of graphite material. The electrical switching slip ring module 2 is further provided with a circuit board 24 and a plurality of spring wires 25;
the rotating mechanism 11 is provided with a convex shaft section 26, a switching section 27 and a connecting section 28 which are connected in sequence; an axial hole 161 and a radial through hole 162 which are connected in a crisscross manner are arranged in the camshaft section 26; the output shaft of the drive mechanism 5 penetrates into the axial hole 161 of the camshaft section 26; the radial through hole 162 penetrates a locking screw to fix the output shaft of the driving mechanism 5 with the protruding shaft section 26; a plurality of groove rings 171 are provided on the switching section 27; the groove rings 171 are defined as a first battery pack powering slip ring 14, a second battery pack powering slip ring 15, a second battery pack charging slip ring 16, a first battery pack charging slip ring 17, and a position detection mechanism, respectively; a copper arc ring 29 is fixedly arranged in each groove ring 171, and the copper arc ring 29 and the rotating mechanism 11 synchronously rotate; each groove ring 171 is electrically connected to a circuit board 24 contact by a spring wire 25.
The electrical switching slip ring module 2 is also provided with a motor bracket 13 and a shaft bracket 30;
the driving mechanism 5 is fixedly connected with the motor bracket 13 through bolts; the motor bearing 21 is sleeved on the motor support 13, and the output shaft of the driving mechanism 5 penetrates through the motor bearing 21 of the motor support 13 and extends into the axial hole 161 of the camshaft section 26; the bottom of the shaft bracket 30 and the bottom of the motor bracket 13 are respectively connected with the circuit board 24 through bolts 20; the shaft support 30 is connected with a bearing seat 22 through a screw 23;
the connecting section 28 of the rotating mechanism 11 is inserted into the bearing hole of the bearing seat 22 and connected in an interference fit manner. The driving mechanism 5 adopts a GM12-15BY stepping motor.
The electrical switching slip ring module is driven by a micro stepping motor, the motor is controlled by a single chip microcomputer, accurate position rotation positioning is realized, and single-contact multi-contact on-off control and time delay timing sequence control can be realized; the complex on-off combination of a plurality of switches in the switch group can be realized by increasing or reducing the number, the angle size and the placing position of the copper rings on the rotary drum rotary channel so as to realize various function switching and function combination of a circuit system.
The single-chip may be software and/or firmware executed by processing circuitry including one or more processors, such as one or more Digital Signal Processors (DSPs), general purpose microprocessors, application specific integrated circuits ASICs, Field Programmable Gate Arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Thus, the term "processor," as used herein, may refer to any of the foregoing structure or any other structure more suitable for implementing the techniques described herein. In addition, in some aspects, the functionality described in this disclosure may be provided in software modules and hardware modules.
The techniques described herein may be implemented in hardware, software, firmware, or any combination thereof. Various features are described as modules, units or components that may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices or other hardware devices. In some cases, various features of an electronic circuit may be implemented as one or more integrated circuit devices, such as an integrated circuit chip or chipset.
The low-power-consumption slip ring switching and maintaining device is powered on at the moment of action and is powered off after the action, the state can be maintained for a long time, and the low-power-consumption slip ring switching and maintaining device is mainly used for telemetering equipment which works for a long time and is powered by batteries, for example, a recovery type deepwater monitoring device is put in, the telemetering equipment can only work for a long time as far as possible by means of self limited electric quantity after the deepwater monitoring device is put in, and the switching and the function switching can only be realized by means of external remote control signals and internal battery driving after the device is hermetically assembled.
The low-power-consumption slip ring switching and maintaining device has great advantages compared with the traditional multi-pole multi-throw band switch, the traditional multi-pole multi-throw band switch can only be manually rotated through a knob, the torsion is large, and obviously, the traditional multi-pole multi-throw band switch cannot be used; the general transistor switch circuit, the analog integrated circuit switch circuit, etc., not only the driving power supply driving circuit needs uninterrupted long-term power-on and power consumption no matter the output is on or off, but also the conducting state has conducting voltage drop or conducting resistance, which causes great extra loss waste, even if the loss current and power are very small, the loss is still considerable and huge due to relatively limited battery capacity accumulated in the long-term working of the whole year.
The common relay needs the coil to be powered on and off to realize on-off conversion, and needs the coil to be kept powered on to keep the state unchanged, the working current of the conventional relay is too large, and if the relay works uninterruptedly, the electric quantity of a battery can be exhausted quickly.
The electric switching slip ring module only needs to overcome friction force because the rotating cylinder is round, smooth and flat, and the power of the motor is very small. The motor only works at the moment of switching the rotation of the switch, and is kept in a power-off state for a long time, and the conduction state has no loss.
The switching section 27 of the rotating mechanism 11 of the electrical switching slip ring module is in a drum shape, and is designed according to a 3D printing structure, the whole structure of the switch is simple and reliable, the switch is suitable for mass production and various special instruments and equipment, the switch can be integrated on a circuit class of the instruments and equipment, the switch is compact and does not need lead connection, and the switch can be made to be small in size as required. The speed reduction ratio of the micro stepping speed reduction motor GM12-15BY is 1:50, 8 rotating channels are arranged on the rotating cylinder, a copper ring is arranged on each rotating channel, and two groups of contacts are arranged on each rotating channel.
In the invention, a load power supply end is electrically connected with a power supply end of a first battery pack 3 through a circuit board 24, a spring wire 25 and a copper arc ring 29 on a first battery pack power supply slip ring 14 in sequence;
the load power supply end is electrically connected with the power supply end of the second battery pack 4 through the circuit board 24, the spring wire 25 and the copper arc ring 29 on the second battery pack power supply slip ring 15 in sequence;
the charging power supply 6 is electrically connected with the charging end of the second battery pack 4 sequentially through the circuit board 24, the spring wire 25 and the copper arc ring 29 on the second battery pack charging slip ring 16;
the charging power supply 6 is electrically connected with the charging end of the first battery pack 3 sequentially through the circuit board 24, the spring wire 25 and the copper arc ring 29 on the first battery pack charging slip ring 17;
the position detection mechanism includes: a first position detecting slip ring 18 and a second position detecting slip ring 19;
the electrical switching slip ring module 2 is further provided with a first time period P1, a second time period P2, a third time period P3, a fourth time period P4 and a fifth time period P5;
three time sequence sections are pressed on a copper arc ring 29 on the first battery pack power supply slip ring 14; three time sequence sections are pressed on a copper arc ring 29 on the power supply slip ring 15 of the second battery pack; the copper arc ring 29 on the second battery pack charging slip ring 16 is provided with two time sequence sections in a pressing mode; two time sequence sections are pressed on a copper arc ring 29 on the first battery pack charging slip ring 17; two time sequence sections are pressed on a copper arc ring 29 on the first position detection slip ring 18; two time sequence sections are pressed on a copper arc ring 29 on the second position detection slip ring 19;
each timing segment includes an arc length of 10 °, or 20 °, or 30 °, or 40 °. The specific values are not limited herein, and the first timing segment P1, the second timing segment P2, the third timing segment P3, the fourth timing segment P4 and the fifth timing segment P5 are in an equal division state. Therefore, the rotation angle can be conveniently acquired by the single chip microcomputer, and switching control is facilitated.
The first time sequence section and the second time sequence section of the copper arc ring 29 on the first battery pack power supply slip ring 14 are respectively superposed with the two time sequence sections of the copper arc ring 29 on the second battery pack charging slip ring 16 and the two time sequence sections of the copper arc ring 29 on the first position detection slip ring 18; the first time sequence section and the second time sequence section of the copper arc ring 29 on the second battery pack power supply slip ring 15 are respectively superposed with the two time sequence sections of the copper arc ring 29 on the first battery pack charging slip ring 17 and the two time sequence sections of the copper arc ring 29 on the second position detection slip ring 19; the third timing segment of the copper arc ring 29 on the first battery pack power slip ring 14 coincides with the third timing segment of the copper arc ring 29 on the second battery pack power slip ring 15.
The device still includes: the input and output module, the electric quantity acquisition circuit and the motor driving circuit 8; the single chip microcomputer 1 respectively obtains electric quantity information of the first battery pack 3 and the second battery pack 4 through the electric quantity acquisition circuit and the first battery pack 3 and the second battery pack 4 respectively; the single chip microcomputer 1 acquires a control instruction input by a user and a threshold preset parameter through an input/output module; the singlechip 1 is connected with the driving mechanism 5 through a motor driving circuit to control the driving mechanism 5 to operate.
The device still includes: the system comprises a first BMS active equalization module and a second BMS active equalization module; the first BMS active equalization module is connected with the power supply end and the charging end of the first battery pack 3; the second BMS active equalization module is connected to the power supply terminal and the charging terminal of the second battery pack 4. The first BMS active equalization module and the second BMS active equalization module both adopt BMS active equalization modules commonly used in the field. The specific type is not limited.
The invention also provides a low-power consumption slip ring switching and maintaining method, which comprises the following steps:
the charging power supply charges the second battery pack through the second battery pack charging slip ring;
the first battery pack supplies power to a load through the first battery pack power supply slip ring;
when the single chip microcomputer detects that the voltage of the first battery pack is lower than the threshold value, the driving mechanism is controlled to operate to drive the rotating mechanism to rotate by a preset angle, and the following switching process is completed:
the charging power supply charges the first battery pack through the first battery pack charging slip ring;
the second battery pack supplies power to the load through the second battery pack power slip ring.
The switching process is triggered by the fact that the single chip microcomputer detects that the voltage of the battery pack is lower than a threshold value. The power supply can also be switched by detecting the charging state of the battery pack, namely the power supply is switched after the battery pack is charged to a certain threshold value. Other conditions may of course be used for the handover.
The method provided by the invention further comprises the following steps:
the first position detecting slip ring 18 is provided with a first position detecting means 41 and a second position detecting means 42;
the second position detection slip ring 19 is provided with a third position detection device 43 and a fourth position detection device 44;
the charging power supply charges the second battery pack through the second battery pack charging slip ring; the first battery pack supplies power to a load through the first battery pack power supply slip ring;
the first position detection device 41 is communicated with the second position detection device 42 through the copper arc ring 29 of the first position detection slip ring 18;
the single chip microcomputer is communicated with the second position detection device 42 through the first position detection device 41 to obtain the current position information of the electrical switching slip ring module;
when the single chip microcomputer detects that the voltage of the first battery pack is lower than the threshold value, the driving mechanism is controlled to operate, and the rotating mechanism is driven to rotate by a preset angle;
the third position detection device 43 is communicated with the fourth position detection device 44 through the copper arc ring 29 of the second position detection slip ring 19, so that the singlechip acquires communication information;
the charging power supply charges the first battery pack through the first battery pack charging slip ring;
the second battery pack supplies power to the load through the second battery pack power slip ring.
The invention also provides a specific implementation mode, and the charging switching of the battery pack comprises the following steps: switching slip ring length and timing includes:
the copper arc ring 29 on the first battery charging slip ring 17 covers the fourth timing segment P4 and the fifth timing segment P5 if each timing segment involves an arc length of 20 degrees; the copper arc ring 29 on the first battery charging slip ring 17 covers an arc length of 40 degrees.
The copper arc ring 29 on the second battery pack charging slip ring 16 covers the first timing segment P1 and the second timing segment P2 and the copper arc ring 29 on the second battery pack charging slip ring 16 covers an arc length of 40 degrees.
In the switching process, the arc length of the copper arc ring 29 on the first battery pack charging slip ring 17 and the arc length of the copper arc ring 29 on the second battery pack charging slip ring 16 are provided with the disconnection of preset arc length, so that the short circuit of the two groups of battery packs is prevented. The preset arc length is 20 degrees of arc length, namely the 20 degrees of arc length is disconnected, so that the two groups of battery packs are prevented from being short-circuited.
Switching of the battery pack to supply power to the load: switching slip ring length and timing includes:
the first battery pack supplies power to a load through the first battery pack power supply slip ring; the copper arc ring 29 of the first battery powering slip ring covers the first, second and third timing segments P1, P2, P3; the copper arc ring 29 of the first battery powered slip ring covers an arc length of 60 degrees.
The second battery pack supplies power to the load through the second battery pack power supply slip ring; the copper arc ring 29 of the second battery pack powering slip ring covers the third timing segment P3, the fourth timing segment P4 and the fifth timing segment P5; the copper arc ring 29 of the second battery powered slip ring covers an arc length of 60 degrees.
In the switching process, the preset arc length is overlapped, so that the interruption of load power supply is prevented. In order to prevent the short circuit of the output of the two groups of batteries, the output of the batteries is connected with a diode in series to prevent the short circuit.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A low power slip ring switching retaining apparatus, comprising: the device comprises a single chip microcomputer (1), an electrical switching slip ring module (2), a first battery pack (3), a second battery pack (4), a driving mechanism (5) and a charging power supply (6);
the electrical switching slip ring module (2) is provided with a rotating mechanism (11), the rotating mechanism (11) is provided with a first battery pack power supply slip ring (14), a second battery pack power supply slip ring (15), a second battery pack charging slip ring (16), a first battery pack charging slip ring (17) and a position detection mechanism;
the driving mechanism (5) is connected with the rotating mechanism (11), the driving mechanism (5) is also connected with the single chip microcomputer (1), and the driving mechanism (5) receives a control instruction of the single chip microcomputer (1) and drives the rotating mechanism (11) to rotate to adjust the position of the slip ring;
the first battery pack power supply slip ring (14) is respectively connected with the power supply end of the load (7) and the power supply end of the first battery pack (3);
the second battery pack power supply slip ring (15) is respectively connected with a load power supply end and a second battery pack (4) power supply end;
the second battery pack charging slip ring (16) is respectively connected with a charging power supply (6) and a charging end of the second battery pack (4);
the first battery pack charging slip ring (17) is respectively connected with a charging power supply (6) and a charging end of the first battery pack (3);
the position detection mechanism is connected with the single chip microcomputer (1), and the single chip microcomputer (1) obtains the current rotation angle and rotation state of the rotation mechanism (11) through the position detection mechanism.
2. Low power consumption slip ring switching retaining device according to claim 1,
the electrical switching slip ring module (2) is also provided with a circuit board (24) and a plurality of spring wires (25);
the rotating mechanism (11) is provided with a camshaft section (26), a switching section (27) and a connecting section (28) which are connected in sequence;
an axial hole (161) and a radial through hole (162) which are connected in a cross way are arranged in the camshaft section (26);
an output shaft of the driving mechanism (5) penetrates into an axial hole (161) of the camshaft section (26); a locking screw penetrates through the radial through hole (162) to fix an output shaft of the driving mechanism (5) with the camshaft section (26);
a plurality of groove rings (171) are arranged on the switching section (27); the groove rings (171) are respectively defined as a first battery pack power supply slip ring (14), a second battery pack power supply slip ring (15), a second battery pack charging slip ring (16), a first battery pack charging slip ring (17) and a position detection mechanism;
a copper arc ring (29) is fixedly arranged in each groove ring (171), and the copper arc rings (29) and the rotating mechanism (11) synchronously rotate;
each groove ring (171) is electrically connected to a circuit board (24) contact point via a spring wire (25).
3. Low power consumption slip ring switching retaining device according to claim 2,
the electrical switching slip ring module (2) is also provided with a motor bracket (13) and a shaft bracket (30);
the driving mechanism (5) is fixedly connected with the motor bracket (13) through a bolt;
a motor bearing (21) is sleeved on the motor bracket (13),
an output shaft of the driving mechanism (5) penetrates through a motor bearing (21) of the motor bracket (13) and extends into an axial hole (161) of the camshaft section (26);
the bottom of the shaft support (30) and the bottom of the motor support (13) are respectively connected with the circuit board (24) through bolts (20);
the shaft support (30) is connected with a bearing seat (22) through a screw (23);
the connecting section (28) of the rotating mechanism (11) is inserted into the bearing hole of the bearing seat (22) and connected in an interference fit mode.
4. Low power consumption slip ring switching retaining device according to claim 2,
the position detection mechanism includes: a first position sensing slip ring (18) and a second position sensing slip ring (19);
the electrical switching slip ring module (2) is further provided with a first time sequence section (P1), a second time sequence section (P2), a third time sequence section (P3), a fourth time sequence section (P4) and a fifth time sequence section (P5);
three time sequence sections are pressed on a copper arc ring (29) on a first battery pack power supply slip ring (14);
three time sequence sections are pressed on a copper arc ring (29) on the power supply slip ring (15) of the second battery pack;
two time sequence sections are pressed on a copper arc ring (29) on the charging slip ring (16) of the second battery pack;
a copper arc ring (29) on the first battery pack charging slip ring (17) is provided with two time sequence sections in a pressing mode;
two time sequence sections are pressed on a copper arc ring (29) on the first position detection slip ring (18);
two time sequence sections are pressed on a copper arc ring (29) on the second position detection slip ring (19);
the first time sequence section and the second time sequence section of a copper arc ring (29) on the first battery pack power supply slip ring (14) are respectively superposed with the two time sequence sections of the copper arc ring (29) on the second battery pack charging slip ring (16) and the two time sequence sections of the copper arc ring (29) on the first position detection slip ring (18);
the first time sequence section and the second time sequence section of the copper arc ring (29) on the second battery pack power supply slip ring (15) are respectively superposed with the two time sequence sections of the copper arc ring (29) on the first battery pack charging slip ring (17) and the two time sequence sections of the copper arc ring (29) on the second position detection slip ring (19);
the third timing segment of the copper arc ring (29) on the first battery pack power supply slip ring (14) coincides with the third timing segment of the copper arc ring (29) on the second battery pack power supply slip ring (15).
5. Low power consumption slip ring switching retaining device according to claim 1 or 2,
further comprising: the input/output module, the electric quantity acquisition circuit and the motor driving circuit (8);
the single chip microcomputer (1) is respectively connected with the first battery pack (3) and the second battery pack (4) through the electric quantity acquisition circuit to respectively acquire electric quantity information of the first battery pack (3) and the second battery pack (4);
the single chip microcomputer (1) acquires a control instruction input by a user and a threshold preset parameter through an input and output module;
the single chip microcomputer (1) is connected with the driving mechanism (5) through a motor driving circuit to control the driving mechanism (5) to operate.
6. Low power consumption slip ring switching retaining device according to claim 1 or 2,
further comprising: the system comprises a first BMS active equalization module and a second BMS active equalization module;
the first BMS active equalization module is connected with the power supply end and the charging end of the first battery pack (3);
the second BMS active equalization module is connected with the power supply end and the charging end of the second battery pack (4).
7. A low-power-consumption slip ring switching and maintaining method is characterized by comprising the following steps:
the charging power supply charges the second battery pack through the second battery pack charging slip ring;
the first battery pack supplies power to a load through the first battery pack power supply slip ring;
when the single chip microcomputer detects that the voltage of the first battery pack is lower than the threshold value, the driving mechanism is controlled to operate to drive the rotating mechanism to rotate by a preset angle, and the following switching process is completed:
the charging power supply charges the first battery pack through the first battery pack charging slip ring;
the second battery pack supplies power to the load through the second battery pack power slip ring.
8. The low power consumption slip ring switch hold method of claim 7, further comprising:
the first position detection slip ring (18) is provided with a first position detection device (41) and a second position detection device (42);
the second position detection slip ring (19) is provided with a third position detection device (43) and a fourth position detection device (44);
the charging power supply charges the second battery pack through the second battery pack charging slip ring; the first battery pack supplies power to a load through the first battery pack power supply slip ring;
the first position detection device (41) is communicated with the second position detection device (42) through a copper arc ring (29) of the first position detection slip ring (18);
the singlechip is communicated with the second position detection device (42) through the first position detection device (41) to obtain the current position information of the electrical switching slip ring module;
when the single chip microcomputer detects that the voltage of the first battery pack is lower than the threshold value, the driving mechanism is controlled to operate, and the rotating mechanism is driven to rotate by a preset angle;
the third position detection device (43) is communicated with the fourth position detection device (44) through a copper arc ring (29) of the second position detection slip ring (19), so that the singlechip acquires communication information;
the charging power supply charges the first battery pack through the first battery pack charging slip ring;
the second battery pack supplies power to the load through the second battery pack power slip ring.
9. The low-power-consumption slip ring switching maintenance method according to claim 7, wherein the switching of the battery pack charging is: switching slip ring length and timing includes:
a copper arc ring (29) on the first battery pack charging slip ring (17) covers the fourth timing segment (P4) and the fifth timing segment (P5);
a copper arc ring (29) on the second battery charging slip ring (16) covers the first time period (P1) and the second time period (P2);
in the switching process, the arc length of a copper arc ring (29) on the first battery pack charging slip ring (17) and the arc length of the copper arc ring (29) on the second battery pack charging slip ring (16) are disconnected by preset arc length, so that short circuit of the two groups of battery packs is prevented.
10. The low-power-consumption slip ring switching maintenance method according to claim 7, wherein the switching of the battery pack to supply power to the load: switching slip ring length and timing includes:
the first battery pack supplies power to a load through the first battery pack power supply slip ring;
a copper arc ring (29) of the first battery powering slip ring covering a first time period (P1), a second time period (P2) and a third time period (P3);
the second battery pack supplies power to the load through the second battery pack power supply slip ring;
a copper arc ring (29) of the second battery pack powering slip ring covering a third timing segment (P3), a fourth timing segment (P4) and a fifth timing segment (P5);
in the switching process, the preset arc length is overlapped, so that the interruption of load power supply is prevented.
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| CN201910615694.2A CN110350620B (en) | 2019-07-09 | 2019-07-09 | Low-power-consumption slip ring switching and holding device and switching and holding method |
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| CN201910615694.2A CN110350620B (en) | 2019-07-09 | 2019-07-09 | Low-power-consumption slip ring switching and holding device and switching and holding method |
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| CN112420414A (en) * | 2020-11-02 | 2021-02-26 | 天津索龙电子科技有限公司 | Intelligent switch based on micromotor action |
| CN113031239A (en) * | 2021-02-01 | 2021-06-25 | 佛山市碧盈医疗器材有限公司 | Operating microscope's shooting mechanism and operating microscope |
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