CN104734284A - Power-frequency charging machine internal high-temperature protection method and protection device using same - Google Patents
Power-frequency charging machine internal high-temperature protection method and protection device using same Download PDFInfo
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- CN104734284A CN104734284A CN201510087738.0A CN201510087738A CN104734284A CN 104734284 A CN104734284 A CN 104734284A CN 201510087738 A CN201510087738 A CN 201510087738A CN 104734284 A CN104734284 A CN 104734284A
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- China
- Prior art keywords
- temperature
- power frequency
- frequency charger
- thermal switch
- chip microcomputer
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Classifications
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
Abstract
The invention discloses a power-frequency charging machine internal high-temperature protection method and a protection device using same. Temperature induction switches are arranged on the surfaces of devices, needing temperature measurement, in a power-frequency charging machine; the temperature induction switches are connected with a trigger circuit of an I0 end corresponding to a single-chip microcomputer in a power-frequency charging machine, the trigger circuit comprises two divider resistors connected in series, the two divider resistors connected in series are connected between an I0 port on the single-chip microcomputer and the positive pole of a power supply, one pin of each temperature induction switch is grounded, and the other pin of each temperature induction switch is connected between the two divider resistors connected in series; when work temperature in the charging machine is too high, the single-chip microcomputer can enable the power-frequency charging machine to stop work, meanwhile, fault codes of a high-temperature device are displayed on a display screen, overhaul and processing are carried out conveniently in time, larger safety hidden hazards are avoided, and long-time safe operation of the power-frequency charging machine can be effectively guaranteed.
Description
Technical field
The present invention relates to power frequency charger, particularly relate to resist technology field during power frequency charger internal high temperature.
Background technology
Power frequency charger is usually used as the charger of the equipment such as electri forklift, because the power output of the equipment such as electri forklift is larger, under the prerequisite meeting charger overall dimension, the working temperature of the relevant components and parts in charger inside considered by needs, too high premature aging or the damage easily causing components and parts of the working temperature of components and parts.Utilize the single-chip microcomputer in power frequency charger, develop the guard method when the inner related device high temperature of power frequency charger and protective device thereof, the long-term safety of energy effective guarantee power frequency charger is used.
Summary of the invention
The object of the invention is to: high-temperature protection method and protective device thereof that a kind of power frequency charger inside is provided.
For achieving the above object, present invention employs following technical scheme.
The high-temperature protection method of power frequency charger inside, is characterized in: the device surface set temperature inductive switch respectively (i) needing thermometric in power frequency charger; (ii) each thermal switch is accessed respectively I corresponding on single-chip microcomputer in power frequency charger
0in the circuits for triggering of end; (iii), when certain device surface temperature is too high, the thermal switch being arranged on this device surface can rapid action, the I that single-chip microcomputer is connected with this thermal switch
0port can receive triggering signal, single-chip microcomputer makes the break-off of power frequency charger according to this triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
Further; a kind of protective device realizing the guard method of above-mentioned power frequency charger internal high temperature; be characterized in: the device surface set temperature inductive switch respectively needing thermometric in power frequency charger, each thermal switch accesses I corresponding on single-chip microcomputer in power frequency charger respectively
0in the circuits for triggering of port; The structure of described circuits for triggering is: two divider resistances be mutually connected in series, and two divider resistances be connected in series are connected to the I on single-chip microcomputer
0between port and positive source; A pin ground connection of thermal switch, another pin of thermal switch is connected between the divider resistance of two serial connections; When the surface temperature of each device is normal, thermal switch is failure to actuate, now corresponding I on single-chip microcomputer
0port connects high level, and power frequency charger normally works; When the surface temperature of certain device is too high, be arranged on the rapid action of thermal switch of this device surface, closing contact, makes the I be connected with this thermal switch
0port ground connection and be low level, single-chip microcomputer makes the break-off of power frequency charger according to this low level triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
Further, aforesaid protective device, wherein: described thermal switch is bimetallic temperature inductive switch.
The invention has the beneficial effects as follows: in power frequency charger, adopt guard method of the present invention and protective device; when charger internal operating temperature is too high or cause temperature too high because of device fault; monolithic function makes the break-off of power frequency charger; simultaneously in the failure code of this high-temperature device of power frequency charger display screen display; convenient operation workman judges which device temperature is too high and carries out in time overhauling and processing; thus avoid causing larger potential safety hazard, and then the long-term safety of energy effective guarantee power frequency charger is used.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the protective device described in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
The high-temperature protection method of power frequency charger inside of the present invention, is characterized in: the device surface set temperature inductive switch respectively (i) needing thermometric in power frequency charger; (ii) each thermal switch is accessed respectively I corresponding on single-chip microcomputer in power frequency charger
0in the circuits for triggering of end; (iii), when certain device surface temperature is too high, the thermal switch being arranged on this device surface can rapid action, the I that single-chip microcomputer is connected with this thermal switch
0port can receive triggering signal, single-chip microcomputer makes the break-off of power frequency charger according to this triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
As shown in Figure 1; in the present embodiment; the described protective device realizing the guard method of above-mentioned power frequency charger internal high temperature; its structure is: the device surface set temperature inductive switch respectively needing thermometric in power frequency charger; shown in Figure 1; exemplarily indicate six temperature sense beginnings in Fig. 1, that is: thermal switch J1, J2, J3, J4, J5 and J6, described thermal switch all adopts bimetallic temperature inductive switch.Each thermal switch accesses I corresponding on single-chip microcomputer U1 in power frequency charger respectively
0in the circuits for triggering of port.In the present embodiment, because the structure of each thermal switch and coupled circuits for triggering is all identical, describing for simplifying, being illustrated for thermal switch J1 and coupled circuits for triggering below, repeating no more other thermal switch and coupled circuits for triggering.The structure of the circuits for triggering be connected with thermal switch J1 is: two divider resistance R1 and R2 be mutually connected in series, and two divider resistance R1 and R2 be connected in series are connected to an I on single-chip microcomputer U1
0between port and positive source; A pin ground connection of thermal switch J1, another pin of thermal switch J1 is connected between divider resistance R1 and R2 of two serial connections; When the surface temperature of the device being provided with thermal switch J1 is normal, thermal switch J1 is failure to actuate, now corresponding I on single-chip microcomputer U1
0port connects high level, and power frequency charger normally works; When the surface temperature of the device being provided with thermal switch J1 is too high, be arranged on the rapid action of thermal switch J1 of this device surface, closing contact, make the I be connected with this thermal switch J1
0port ground connection and be low level, single-chip microcomputer U1 makes the break-off of power frequency charger according to this low level triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
The invention has the beneficial effects as follows: in power frequency charger, adopt guard method of the present invention and protective device; when charger internal operating temperature is too high or cause temperature too high because of device fault; monolithic function makes the break-off of power frequency charger; simultaneously in the failure code of this high-temperature device of power frequency charger display screen display; convenient operation workman judges which device temperature is too high and carries out in time overhauling and processing; thus avoid causing larger potential safety hazard, and then the long-term safety of energy effective guarantee power frequency charger is used.
Claims (3)
1. the high-temperature protection method of power frequency charger inside, is characterized in that: the device surface set temperature inductive switch respectively (i) needing thermometric in power frequency charger; (ii) each thermal switch is accessed respectively I corresponding on single-chip microcomputer in power frequency charger
0in the circuits for triggering of end; (iii), when certain device surface temperature is too high, the thermal switch being arranged on this device surface can rapid action, the I that single-chip microcomputer is connected with this thermal switch
0port can receive triggering signal, single-chip microcomputer makes the break-off of power frequency charger according to this triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
2. one kind realizes the protective device of power frequency charger internal high temperature guard method described in claim 1; it is characterized in that: the device surface set temperature inductive switch respectively needing thermometric in power frequency charger, each thermal switch accesses I corresponding on single-chip microcomputer in power frequency charger respectively
0in the circuits for triggering of port; The structure of described circuits for triggering is: two divider resistances be mutually connected in series, and two divider resistances be connected in series are connected to the I on single-chip microcomputer
0between port and positive source; A pin ground connection of thermal switch, another pin of thermal switch is connected between the divider resistance of two serial connections; When the surface temperature of each device is normal, thermal switch is failure to actuate, now corresponding I on single-chip microcomputer
0port connects high level, and power frequency charger normally works; When the surface temperature of certain device is too high, be arranged on the rapid action of thermal switch of this device surface, closing contact, makes the I be connected with this thermal switch
0port ground connection and be low level, single-chip microcomputer makes the break-off of power frequency charger according to this low level triggering signal, simultaneously in the failure code of this high-temperature device of power frequency charger display screen display, operator judges according to this failure code the device that temperature is too high and carries out in time overhauling and processing.
3. protective device according to claim 2, is characterized in that: described thermal switch is bimetallic temperature inductive switch.
Priority Applications (1)
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CN201510087738.0A CN104734284A (en) | 2015-02-26 | 2015-02-26 | Power-frequency charging machine internal high-temperature protection method and protection device using same |
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CN201510087738.0A CN104734284A (en) | 2015-02-26 | 2015-02-26 | Power-frequency charging machine internal high-temperature protection method and protection device using same |
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Citations (7)
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CN201008091Y (en) * | 2007-02-28 | 2008-01-16 | 上海施能电器设备厂 | Thermal protection circuit of intelligent charger |
CN101257219A (en) * | 2007-02-28 | 2008-09-03 | 上海施能电器设备厂 | Intelligent charging method and intelligent charger used by the method |
CN101567571A (en) * | 2009-01-16 | 2009-10-28 | 上海第二工业大学 | Intelligent charging machine for an electric forklift truck |
CN202111196U (en) * | 2011-06-30 | 2012-01-11 | 邱海燕 | Battery pack with temperature sensing switch |
CN202395505U (en) * | 2011-12-12 | 2012-08-22 | 宁波汉浦工具有限公司 | Battery charging circuit |
CN204068314U (en) * | 2014-07-02 | 2014-12-31 | 鞍山通尊科技企业孵化器有限公司 | A kind of electri forklift quick charger |
CN204578125U (en) * | 2015-02-26 | 2015-08-19 | 张家港市华为电子有限公司 | The high temperature protection device of power frequency charger inside |
-
2015
- 2015-02-26 CN CN201510087738.0A patent/CN104734284A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201008091Y (en) * | 2007-02-28 | 2008-01-16 | 上海施能电器设备厂 | Thermal protection circuit of intelligent charger |
CN101257219A (en) * | 2007-02-28 | 2008-09-03 | 上海施能电器设备厂 | Intelligent charging method and intelligent charger used by the method |
CN101567571A (en) * | 2009-01-16 | 2009-10-28 | 上海第二工业大学 | Intelligent charging machine for an electric forklift truck |
CN202111196U (en) * | 2011-06-30 | 2012-01-11 | 邱海燕 | Battery pack with temperature sensing switch |
CN202395505U (en) * | 2011-12-12 | 2012-08-22 | 宁波汉浦工具有限公司 | Battery charging circuit |
CN204068314U (en) * | 2014-07-02 | 2014-12-31 | 鞍山通尊科技企业孵化器有限公司 | A kind of electri forklift quick charger |
CN204578125U (en) * | 2015-02-26 | 2015-08-19 | 张家港市华为电子有限公司 | The high temperature protection device of power frequency charger inside |
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Application publication date: 20150624 |
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