CN101752883B - Charging circuit, medical facility and charging method - Google Patents
Charging circuit, medical facility and charging method Download PDFInfo
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- CN101752883B CN101752883B CN2008102181082A CN200810218108A CN101752883B CN 101752883 B CN101752883 B CN 101752883B CN 2008102181082 A CN2008102181082 A CN 2008102181082A CN 200810218108 A CN200810218108 A CN 200810218108A CN 101752883 B CN101752883 B CN 101752883B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a medical facility and a charging circuit. The charging circuit comprises a charging unit and a control unit, wherein the charging unit is used for supplying charging current to a battery; and the control unit is connected with the charging unit for controlling the charging current supplied by the charging unit. In the invention, different charging current is selected to charge the battery, and a rapid-slow combined charging manner is adopted, thereby satisfying the requirements of charging time, controlling the heating quantity of the whole monitoring facility within a certain range and ensuring the service life of the monitoring facility.
Description
[technical field]
The present invention relates to Medical Devices, relate in particular to the charging circuit of Medical Devices.
[background technology]
At present, a lot of Medical Devices require to possess mobility, can not have the long-time battery-powered operation that relies under the environment of civil power, and this treatment equipment of will seeking medical advice has and overlaps flexibly battery charging management circuit, for example, and patient monitor equipment.The battery charging can produce heat, and heat is to cause the immediate cause that electronic equipment lost efficacy.The heat problem of the Medical Devices of how controlling well charging is for a long time key issue of safe and reliable operation of system.Patient monitor equipment is single charging current mode what adopt aspect the battery charging at present.This charging modes drawback has two:
1. the caloric value of system is too large.If patient monitor equipment has faster charging rate, can guarantee that it finishes charging process in the short period of time.But in charging, if patient monitor equipment is simultaneously also in running order, the power consumption of whole system very large just caused the temperature of patient monitor device interior sharply to rise so.Threaten on the one hand the life-span of patient monitor device interior electronic devices and components, on the other hand, also can have influence on the useful life of battery.Patient monitor equipment concentrates in the little space of relative sealing, and heat is not easy to come out.If adopt fan to freeze by force, can cause again the noise problem of fan, have influence on patient's normal rest.
2. the charging rate of system is too slow.In order drawback 1 described problem not occur, patient monitor equipment can adopt the mode of low current charge.Low current charge has solved the heating problem of charging, but has introduced new problem.Under the low current charge pattern, the charging rate of battery is very slow, because patient monitor equipment need to be worked under power failure or outdoor pattern for a long time, needs with the continuous care of assurance to patient.The long charging interval can cause when needs use powered battery, and battery is underfill also, is difficult to support the operating time of growing very much.
So the scheme of actual patient monitor equipment big city design trade-off adopts a kind of size charging current placed in the middle that system is charged, but can't perfectly solve previously described two drawbacks all the time.
[summary of the invention]
Main purpose of the present invention solves the problems of the prior art exactly, and a kind of Medical Devices are provided, and makes the charging current of Medical Devices adjustable.
Another object of the present invention just provides a kind of charging circuit, makes charging current adjustable.
A further object of the present invention just provides a kind of charging method, makes charging current adjustable.
For achieving the above object, the invention provides a kind of Medical Devices, comprise the charging circuit that manages for the charging to battery, described charging circuit comprises for the charhing unit that battery is provided charging current, described charging circuit also comprises control unit, described control unit links to each other with charhing unit, is used for the size of the charging current that the control charhing unit provides.
In one embodiment, described charging circuit also comprises the first detecting unit and judging unit, described judging unit links to each other with control unit with the first detecting unit respectively, described the first detecting unit is for detection of the Medical Devices state parameter, described judging unit is used for testing result and presets condition comparing, output control signals to control unit according to comparative result, described control unit is used for controlling according to control signal the size of the charging current that described charhing unit provides.
In another kind of embodiment, described charging circuit also comprises the second detecting unit, and described the second detecting unit is used for gathering charging current, charging current and the predefined current value that gathers is compared, and comparative result is outputed to described judging unit.
The present invention also provides a kind of charging circuit simultaneously, comprises that described control unit links to each other with charhing unit for the charhing unit and the control unit that battery are provided charging current, is used for the size of the charging current that the control charhing unit provides.
The present invention also provides a kind of charging method of Medical Devices simultaneously, comprises that the resistance value of regulating charging circuit or magnitude of voltage are to regulate charging current.
The invention has the beneficial effects as follows:
The present invention regulates the size of charging current by control unit, make Medical Devices can select the charging current of different sizes that battery is charged, adopt the mode of speed charging combination, both satisfied the requirement in charging interval, the caloric value of whole Medical Devices can be controlled in certain scope again, guarantee the useful life of Medical Devices.
Control the size of automatic switchover charging current according to the different conditions parameter of Medical Devices, charging current is changed with actual demand.
Charging current is carried out closed-loop control, and the actual charging current of order satisfies the settings of expection.
[description of drawings]
Fig. 1 is the frame principle figure of an embodiment of the present invention;
Fig. 2 is the circuit diagram of an embodiment of the present invention;
Fig. 3 is the frame principle figure of the another kind of embodiment of the present invention;
Fig. 4 is the circuit diagram of the another kind of embodiment of the present invention;
Fig. 5 is the frame principle figure of another embodiment of the present invention;
Fig. 6 is the present invention regulates the embodiment of electric current by regulation voltage circuit diagram;
Fig. 7 is the flow chart of an embodiment of the present invention.
[embodiment]
Feature of the present invention and advantage will be elaborated by reference to the accompanying drawings by embodiment.
The standby power supply module of Medical Devices comprises chargeable battery and is used for the charging circuit that charging manages to battery, charging circuit comprises for the charhing unit that battery is provided charging current, for making charging current controlled, charging circuit also includes control unit, control unit links to each other with charhing unit, is used for the size of the charging current that the control charhing unit provides.
Equal voltage divided by resistance according to electric current, a kind of scheme of regulating electric current is: in the situation that the substantially constant regulating resistance of voltage.Charhing unit itself includes certain resistance, and control unit is regulated the resistance value (being the effective resistance value of charhing unit) that is connected in the charging current loop, thereby changes the size of the charging current of charhing unit output.
The another kind of scheme of regulating electric current is: in the situation that the magnitude of voltage at the substantially constant adjusting of charhing unit resistance charhing unit two ends, thereby the size of the charging current of change charhing unit output.
The below describes as an example of patient monitor example.
Embodiment one:
Please refer to Fig. 1, directly by control unit charhing unit is controlled, change the size of charging current, belong to open loop control.As the size of charging current manually is set arbitrarily.Charhing unit is regulated charging current according to settings.
As shown in Figure 2, charhing unit comprises that voltage provides unit and charging resistor, voltage provides cells D C to provide charging voltage for the battery charging, the positive and negative polarities that voltage provides the positive and negative terminal of cells D C to be applied to respectively described battery BAT, described charging resistor R1 are connected on described voltage and provide between cells D C and the battery BAT.Charging resistor R1 is adjustable potentiometer, and control unit is the adjusting terminal of adjustable potentiometer, and first regulation voltage provides cells D C to suitable magnitude of voltage, then changes maximum charging current by regulating terminal regulator potentiometer R1.R1 plays the effect of charging current limiter.Maximum charging current is to be determined by the pressure reduction of charging voltage and cell voltage during beginning, and along with the rising of cell voltage, charging current progressively reduces, until pressure reduction is zero, and the charging current cut-off, charging is finished.
Be under the mode of operation at patient monitor equipment, because equipment itself has certain caloric value, at this moment potentiometer can be tuned up, adopt the charge mode of little electric current, reduce the caloric value of charging circuit.Be under the standby mode at patient monitor equipment, the caloric value of equipment itself is very little, at this moment potentiometer can be turned down, adopts large electric current to charge, and shortens the charging interval.
Embodiment two:
Realize the big or small charging current that automaticallyes switch for making monitor according to the oneself state parameter, can detect by detecting unit state or the working temperature of current patient monitor equipment, testing result and preset value are compared, and the notice control unit, by control unit control charhing unit, belong to closed-loop control again.
Please refer to Fig. 3, charging circuit comprises charhing unit, control unit, the first detecting unit and judging unit, judging unit links to each other with control unit with the first detecting unit respectively, the first detecting unit is for detection of the patient monitor state parameter, the patient monitor state parameter can be the combination of any or at least two kinds in patient monitor operating state, temperature and the battery dump energy, and operating state can be divided into mode of operation and standby mode.The first detecting unit outputs to judging unit with testing result, described judging unit is used for testing result and presets threshold value comparing, output control signals to control unit according to comparative result, described control unit is used for controlling according to control signal the size of the charging current that described charhing unit provides.
Among the embodiment shown in Figure 4, control unit changes the size of the charging current of charhing unit output by the effective resistance value that changes charhing unit.
Charhing unit comprises that voltage provides unit and charging resistor, and charging resistor comprises that the first resistance R 1 of series connection and the second resistance R 2, the first detecting units can detect patient monitor operating state, temperature and/or battery dump energy.Described control unit comprises at least one parallel branch, and parallel branch is in parallel with the second resistance R 2, and described parallel branch comprises switch, and perhaps parallel branch comprises at least one resistance and the switch of connecting with this resistance.In Fig. 4, parallel branch has two, and the first parallel branch comprises the switch Q2 of the 3rd resistance R 3 and series connection with it, and the second parallel branch comprises the switch Q1 of the 4th resistance R 4 and series connection with it.Switch Q1 and switch Q2 respond respectively the control signal of judging unit output, switch switching on and off between the state.By switch switch on and off change and resistance value after the second resistance R 2 is in parallel, thereby change effective resistance value in the access charging current loop.
As required, parallel branch can also arrange one or three, and each parallel branch receives one road corresponding control signal from judging unit.
Switch can be switch triode, metal-oxide-semiconductor, IGBT pipe, electronic switch or relay, can also be mechanical switch.Those skilled in the art can come design circuit according to the switch of existing specific knowledge.
In the present embodiment, judging unit and the first detecting unit also can be integrated in the microcontroller jointly.MCU can export corresponding control signal according to information such as the operating state of system, battery electric quantity, ambient temperatures, and the closed and disconnected of automatic control switch Q1, Q2 is further being regulated the size of charging current.
For example, when the first detecting unit detected monitor and is in mode of operation, the switch that can notify judging unit to control the first parallel branch disconnected, thereby the charged electrical resistance increases, in the situation that charging voltage is constant, charging current reduces.When the first detecting unit detects monitor and is in standby mode, the switch conduction that can notify judging unit to control the first parallel branch, thus the charged electrical resistance reduces, in the situation that charging voltage is constant, charging current increases.
Equally, the first detecting unit detects the temperature of monitor, and temperature value outputed to judging unit, judging unit compares temperature value and the default temperature threshold that detects, if greater than threshold value, then exports control signal, control the switch conduction of the second parallel branch, thereby the charged electrical resistance reduces, in the situation that charging voltage is constant, charging current reduces.The caloric value of patient monitor reduces, and temperature is reduced.
Can regulate charging current by the dump energy that detects battery equally, or by the comprehensive judged result of patient monitor operating state, temperature and battery dump energy charging current is regulated, make the switch of first and second parallel branch be in conducting or off-state, switch combination by first and second parallel branch, can form four kinds of states, four kinds of charging currents are namely arranged.
Basic logic is under the mode of operation, temperature is higher, battery dump energy is more, corresponding less charging current; Under the standby mode, temperature is lower, battery dump energy is fewer, corresponding larger operating current.
Embodiment three:
With reference to Fig. 5, increased the closed-loop control to charhing unit on the basis of embodiment two, belong to two closed-loop controls.Charhing unit is owing to existing individual difference, and same controlling value may be exported different charging currents, and charging effect is impacted.Therefore, in the present embodiment, charging circuit comprises charhing unit, control unit, the first detecting unit, judging unit and the second detecting unit, and judging unit links to each other with control unit, the first detecting unit and the second detecting unit respectively.The first detecting unit is used for testing result is outputed to judging unit for detection of the patient monitor state parameter.The second detecting unit is for detection of the charging current of reality, actual charging current can obtain by the overcharge electric current of resistance of acquisition stream, the charging current and the predefined current value that gather are compared, and comparative result outputed to described judging unit, judging unit can be exported corresponding control signal according to the testing result of the first detecting unit and the second detecting unit, control unit is regulated the size of the charging current that charhing unit provides according to control signal, make actual current satisfy the settings of expection.
In the present embodiment, also can save the first detecting unit, judging unit is according to the testing result output control signal of the second detecting unit.
Embodiment four:
In the present embodiment, control unit comprises voltage regulator circuit, and described voltage regulator circuit is in parallel with charhing unit, regulates the charging current of charhing unit output by the voltage of regulating the charhing unit two ends.
Voltage regulator circuit can be regulated by the control signal of response judging unit output the voltage at described charhing unit two ends, also can be according to operator's setting, and the voltage that output is set changes the voltage at charhing unit two ends.
For example voltage regulator circuit can be variable voltage source or transformer, but the output voltage of setting voltage regulating circuit changes the voltage at charhing unit two ends, thereby changes the size of charging current.Voltage regulator circuit can also be the circuit that comprises current source and adjustable resistance unit, described current source is connected with adjustable resistance unit, adjustable resistance unit can be device or the circuit of variable resistance, other adjustable resistance, regulate the resistance of adjustable resistance unit, change the voltage at charhing unit two ends, thereby change the size of charging current.
In a kind of specific embodiments, voltage regulator circuit comprises bleeder circuit, charhing unit comprises that voltage provides unit and charging resistor, bleeder circuit is in parallel with charging resistor, voltage provides the charging voltage of unit output to be applied to the part of bleeder circuit, the control signal of bleeder circuit response judging unit output changes self voltage ratio, thereby changes the voltage at charging resistor two ends.
Among the embodiment as shown in Figure 6, bleeder circuit is connected in parallel on charging resistor Rs two ends, bleeder circuit comprises the 5th resistance R 5 of series connection, the 6th resistance R 6 and at least one parallel branch in parallel with the 6th resistance R 6, parallel branch comprises switch Q3, parallel branch can also comprise resistance and the switch of connecting with resistance, voltage provides the charging voltage Uref of unit U1 output to be applied to the two ends of the 5th resistance R 5, the control signal of switch Q3 response judging unit (not shown) output, switch switching on and off between the state, thereby regulate the resistance value in the access bleeder circuit, change the voltage ratio of bleeder circuit.In the situation that charging voltage Uref is constant, the voltage at bleeder circuit two ends is changed, thereby changes the voltage at charging resistor two ends, and charging resistor is constant, so charging current is changed.
In Fig. 6, parallel branch has one, and as required, parallel branch can also have a plurality of, and in parallel with the 6th resistance R 6 respectively, each parallel branch receives one tunnel control signal from judging unit.
In addition, parallel branch can also be in parallel with the 5th resistance R 5, and charging voltage Uref is applied to the two ends of the 6th resistance R 6.
Switch can be switch triode, metal-oxide-semiconductor, IGBT pipe, electronic switch or relay, can also be mechanical switch.
In above-described embodiment, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance R 5 and the 6th resistance can be single resistance, also can be comprised of a plurality of resistance serial or parallel connections or connection in series-parallel.
More than be to describe as an example of patient monitor example, in fact, charging circuit of the present invention can also be used in other Medical Devices that need rechargeable battery, also goes for any rechargeable battery.
The present invention proposes a kind of charging method of Medical Devices, charging current can be regulated.
Further, the charging method of the Medical Devices of the present invention's proposition is specifically regulated charging current with the resistance value of adjusting charging circuit or the mode of magnitude of voltage.Regulative mode can be the direct manual adjustments of user, and perhaps the man-machine interface by equipment is regulated, and also can be by setting certain condition, and the rear equipment that satisfies condition is regulated automatically, describes as an example of the latter example among other embodiment of the present invention.
The method of adjusting resistance value can be that charging resistor is set to series, parallel or a plurality of resistance of connection in series-parallel, regulate the physical presence of this resistance in circuit by the break-make of regulating or the switch that is connected in series in parallel with resistance afterwards, and then realization is to the change of charged electrical resistance; These resistance self also can be variable resistors.Charging resistor also can be a variable resistor, directly changes resistance this moment and gets final product.If the charged electrical resistance is that microprocessor or other chips with control function are adjustable, the present invention also can regulate the charged electrical resistance by the method, also the charged electrical resistance directly can be changed to desired value.
The method of regulation voltage level can be the voltage that directly changes the charging resistor two ends, and can think that the charging resistor two ends are connected with variable power supply this moment; The method of regulation voltage level also can be a circuit in parallel with charging resistor, and this circuit comprises a current source and adjustable resistance part, and the resistance value of regulating the adjustable resistance part just can realize the change of charging resistor both end voltage.If charging voltage value is that microprocessor or other chips with control function are adjustable, the present invention also can regulate charging voltage value by the method, also charging voltage value directly can be changed to desired value.
In an embodiment of the charging method of a kind of Medical Devices of the present invention, comprise step:
101, detect the state parameter of Medical Devices;
The state parameter of described detection can be one or more in Medical Devices operating state, temperature, the battery dump energy, can also be other state parameters, for example current charging current;
103, regulate the resistance value of charging circuit or magnitude of voltage to regulate charging current according to the state parameter of described detection;
Take the operating state that detects Medical Devices as example, this state can comprise holding state and operating state, after detecting corresponding state, just charging circuit is adjusted to corresponding resistance corresponding with it.
Take the battery dump energy that detects as example, according to different charge values, the switch on and off combination of corresponding different charging resistor circuit can be set, and then realize that charging current changes, in like manner, the change of corresponding charging voltage value can be set also.If the charged electrical resistance is that microprocessor or other chips with control function are adjustable, also the charged electrical resistance directly can be changed to desired value.
In another embodiment of the charging method of a kind of Medical Devices of the present invention, its flow process comprises step as shown in Figure 7:
301, detect the state parameter of Medical Devices;
The state parameter that for example detects this moment can be the temperature value of Medical Devices;
303, the preset value of more described state parameter and this state parameter;
For example the temperature value that detects and the normal temperature value that sets in advance are compared, relatively the size of two values; This normal temperature value can be a higher temperature value, will cause the possible damage of equipment, dangerous or other issuable adverse consequencess certain to the operator if the equipment working temperature is higher than this temperature;
305, regulate the resistance value of charging circuit or magnitude of voltage to regulate charging current according to described result after relatively;
For example when this state parameter is temperature value, if can think that the temperature value that detects is greater than normal temperature, then should reduce charging current, otherwise, then can increase charging current, so, when reducing charging current, can increase the charged electrical resistance or reduce charging voltage value, otherwise, then reduce the charged electrical resistance or increase charging voltage value.
In the another embodiment of the charging method of a kind of Medical Devices of the present invention, comprise step:
501, detect the state parameter of Medical Devices;
503, obtain charging current corresponding to state parameter that obtain in the described detecting step according to the state parameter of default Medical Devices and the corresponding relation of charging current;
For example for each working temperature value of Medical Devices, accordingly better charging current value is arranged, there are corresponding relation in this temperature value and current value and are recorded;
505, regulate the resistance value of charging circuit or magnitude of voltage according to described charging current so that actual charge current equals or is approximately equal to described charging current;
When the temperature value that has obtained Medical Devices and corresponding better charging current value, as long as charging current is adjusted to this current value, but circuit is not linear adjustable (for example being the charging resistor that several switching circuit controlling resistances exist at circuit) sometimes, can not obtain this moment to flow the current value that equates with this better electrical accurately, can only obtain to be similar to so.
In an again embodiment of the charging method of a kind of Medical Devices of the present invention, comprise step:
701, detect at least two state parameters of Medical Devices;
The state parameter of described detection can be one or more in Medical Devices operating state, temperature, the battery dump energy, can also be other state parameters, for example current charging current;
Below describe as an example of testing state and two parameters of temperature example;
703, according to default rule or computational methods, obtain regulative mode by two state parameters that detect;
For example can form of pre-save, the combination of corresponding each operating state and temperature has the regulative mode of a correspondence; Can calculate a numerical value after perhaps using a formula with operating state and temperature substitution, this numerical value can be corresponding to a kind of regulative mode; Regulative mode is the specifically a kind of of above-mentioned control method;
705, regulate resistance value or the magnitude of voltage of charging circuit according to the regulative mode of described acquisition.
The present embodiment considers that sometimes only regulating according to a parameter is not optimal case, for example working as operating state is to work, several schemes according to the front should be used less charging current, but in fact device temperature may be lower, can use large current charge fully, then can use large current charge to save the charging interval so consider again device temperature this moment.In like manner, if the state of equipment is holding state, should use larger charging current according to several schemes in front, but in fact device temperature may be quite high, use large current charge to have certain danger this moment, so can eliminate this danger after considering this moment.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. Medical Devices, comprise the charging circuit that manages for the charging to battery, described charging circuit comprises for the charhing unit that battery is provided charging current, it is characterized in that: described charging circuit also comprises control unit, the first detecting unit and judging unit, judging unit links to each other with control unit with the first detecting unit respectively, described the first detecting unit is for detection of the Medical Devices state parameter, described judging unit is used for testing result and presets condition comparing, output control signals to control unit according to comparative result, described control unit comprises voltage regulator circuit, described voltage regulator circuit comprises the bleeder circuit that voltage ratio is adjustable, described charhing unit comprises be used to the voltage that charging voltage is provided provides unit and charging resistor, described charging voltage is applied to the part of described bleeder circuit, described bleeder circuit is in parallel with described charging resistor, the control signal of described bleeder circuit response judging unit output changes self voltage ratio, thereby changes the voltage at charging resistor two ends.
2. Medical Devices as claimed in claim 1 is characterized in that: it is at least a in Medical Devices operating state, temperature and the battery dump energy that described the first detecting unit detects the Medical Devices state parameter.
3. Medical Devices as claimed in claim 1, it is characterized in that: bleeder circuit comprises the 5th resistance, the 6th resistance and at least one parallel branch in parallel with the 6th resistance of series connection, parallel branch comprises that switch or parallel branch comprise resistance and the switch of connecting with resistance, described charging voltage is applied to the two ends of the 5th resistance, and the control signal of described switching response judging unit output is switched switching on and off between the state.
4. such as each described Medical Devices among the claim 1-3, it is characterized in that: described charging circuit also comprises the second detecting unit, described the second detecting unit is used for gathering charging current, the charging current and the predefined current value that gather are compared, and comparative result is outputed to described judging unit.
5. charging circuit, comprise for the charhing unit that battery is provided charging current, it is characterized in that: described charging circuit also comprises control unit, the first detecting unit and judging unit, judging unit links to each other with control unit with the first detecting unit respectively, described the first detecting unit is for detection of the Medical Devices state parameter, described judging unit is used for testing result and presets condition comparing, output control signals to control unit according to comparative result, described control unit comprises voltage regulator circuit, described voltage regulator circuit comprises the bleeder circuit that voltage ratio is adjustable, described charhing unit comprises be used to the voltage that charging voltage is provided provides unit and charging resistor, described charging voltage is applied to the part of described bleeder circuit, described bleeder circuit is in parallel with described charging resistor, the control signal of described bleeder circuit response judging unit output changes self voltage ratio, thereby changes the voltage at charging resistor two ends.
6. charging circuit as claimed in claim 5, it is characterized in that: described charging circuit also comprises the second detecting unit, described the second detecting unit is used for gathering charging current, charging current and the predefined current value that gathers is compared, and comparative result is outputed to described judging unit.
7. such as claim 5 or 6 described charging circuits, it is characterized in that: described bleeder circuit comprises the 5th resistance, the 6th resistance and at least one parallel branch in parallel with described the 6th resistance of series connection, described parallel branch comprises switch, described charging voltage is applied to the two ends of the 5th resistance, and the control signal of described switching response judging unit output is switched switching on and off between the state.
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| CN1118916C (en) * | 1999-10-18 | 2003-08-20 | 神基科技股份有限公司 | Charge control device and method |
| CN101316042B (en) * | 2007-05-29 | 2012-07-18 | 深圳迈瑞生物医疗电子股份有限公司 | Safety control system for backup battery interface of medical equipment |
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| JP2002027681A (en) * | 2000-04-28 | 2002-01-25 | Matsushita Electric Ind Co Ltd | Method of recharging battery set including plural electric cells |
| JP2008271781A (en) * | 2004-09-30 | 2008-11-06 | Toyota Motor Corp | Charge/discharge controller for secondary battery |
| CN2930058Y (en) * | 2005-03-28 | 2007-08-01 | 松下电工株式会社 | Charging device |
| CN2919648Y (en) * | 2006-07-12 | 2007-07-04 | 比亚迪股份有限公司 | Battery charging controlling circuit |
| CN2930059Y (en) * | 2006-08-01 | 2007-08-01 | 北京康斯特仪表科技有限公司 | Power supply/charging control circuit |
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Effective date of registration: 20180621 Address after: 518057 the 1-4 floor of MINDRAY building, science and technology south twelve Road, Nanshan District high tech Industrial Park, Shenzhen, Guangdong. Co-patentee after: SHENZHEN MINDRAY SCIENTIFIC Co.,Ltd. Patentee after: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Address before: 518057 MINDRAY science and technology south twelve road MINDRAY high tech Industrial Park, Shenzhen, Guangdong Patentee before: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. |
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Application publication date: 20100623 Assignee: Shenzhen Mindray Animal Medical Technology Co.,Ltd. Assignor: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Contract record no.: X2022440020009 Denomination of invention: Charging circuit, medical device and charging method Granted publication date: 20131023 License type: Common License Record date: 20220804 |