CN211606147U - Lithium battery control circuit system supporting low-temperature scene use - Google Patents
Lithium battery control circuit system supporting low-temperature scene use Download PDFInfo
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- CN211606147U CN211606147U CN202020171553.4U CN202020171553U CN211606147U CN 211606147 U CN211606147 U CN 211606147U CN 202020171553 U CN202020171553 U CN 202020171553U CN 211606147 U CN211606147 U CN 211606147U
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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
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- 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 utility model discloses a lithium battery control circuit system supporting low-temperature scene use, which comprises a control mainboard, a lithium battery cell, a battery protection board, a heating device and a first negative temperature coefficient thermistor (NTC 1), wherein the two sides of the lithium battery cell are connected with the heating device, the NTC1 is connected with one side of any one heating device, and the lithium battery cell is connected with the battery protection board; be equipped with singlechip (MCU) and stabiliser (LDO 1) on the control mainboard, singlechip (MCU) is connected with first power (VCC), stabiliser (LDO 1) is connected with second power (VBAT), NTC1 electricity is connected in the ADC passageway of singlechip (MCU), the switch of singlechip (MCU) control connection stabiliser (LDO 1), stabiliser (LDO 1) and the HCtrl pin connection on the battery protection board, stabiliser (LDO 1) is connected the power supply through the HCtrl pin on the battery protection board with heating device.
Description
Technical Field
The utility model relates to a lithium battery control circuit field, concretely relates to support lithium battery control circuit system that low temperature scene used.
Background
The lithium battery is almost the battery standard of the mobile terminal due to the advantages of high energy density, low memory effect, long cycle life, relative environmental protection and the like, and provides energy supply for the mobile terminal, but because of the working principle and material characteristics of the lithium battery, the charging and discharging and battery capacity of the lithium battery are affected at high temperature or low temperature, which greatly limits the use scenes of PDA products adopting the conventional lithium battery, if the lithium battery always works at high temperature or low temperature, the lithium battery can be correspondingly adjusted by changing the formula components of the electrolyte, but the performance of the lithium battery in other temperature ranges can be reduced by directly using the electrolyte with a fixed temperature formula under the condition that the environmental temperature of the application scene is not fixed, for some industrial PDAs, the lithium battery can be occasionally used in low temperature scenes, but under the condition that the use of the lithium battery at normal temperature and high temperature scenes is not affected, can support low temperature use.
The technologies used in the low-temperature scene of the lithium battery at present are mainly classified into two types:
the first type is that for a lithium battery which is fixed and used at low temperature, the better battery performance can be realized by adjusting the components of the electrolyte, but the technology limits that the battery can only be applied in low-temperature environment;
the other type of technology is that the battery performance is guaranteed by externally heating the battery core of the lithium battery to keep the battery core within a certain temperature range, but the main application scheme is to add a control and heating circuit on a battery protection board at present, so that on one hand, certain requirements are required for the space of the protection board, and on the other hand, the battery has the problems that the power consumption of a single body is large, the power consumption of low-temperature storage is high, and the like;
this solution is clearly not very suitable for PDA products where the battery size and capacity are small and where the endurance requirements are inherently high.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is that the current lithium battery is used in the low temperature scene and has the conditions of fast power consumption and low endurance, the invention provides a lithium battery control circuit system supporting the low temperature scene, which can calculate the temperature of the lithium battery cell and place the heating control circuit into the control mainboard by increasing the number of interface pins between the control mainboard and the lithium battery cell, and can realize the normal use of PDA in the low temperature scene by using the lithium battery body with the heating device and the surface heating plate;
compared with the scheme of placing the control circuit on the battery protection board, the scheme can reduce the required area and space of the protection board, greatly reduce the power consumption of the battery monomer and avoid the problem of high power consumption in low-temperature storage;
under the condition of not changing the electrolyte formula of the conventional lithium battery, the PDA handheld device can support normal use in a low-temperature environment completely through design and adjustment on a circuit and a structure, so that the defects caused by the prior art are overcome.
In order to solve the technical problem, the utility model provides a following technical scheme:
a lithium battery control circuit system supporting low-temperature scene use comprises a control mainboard, a lithium battery cell, a battery protection board, a heating device and a first negative temperature coefficient thermistor (NTC 1), wherein the heating device is connected to both sides of the lithium battery cell, the first negative temperature coefficient thermistor (NTC 1) is connected to one side of any one of the heating device, and the lithium battery cell is connected with the battery protection board;
be equipped with singlechip (MCU) and stabiliser (LDO 1) on the control mainboard, singlechip (MCU) is connected with first power (VCC), stabiliser (LDO 1) is connected with second power (VBAT), first negative temperature coefficient thermistor (NTC 1) electricity connect in the ADC passageway of singlechip (MCU), singlechip (MCU) control connection the switch of stabiliser (LDO 1), stabiliser (LDO 1) with HCtrl pin connection on the battery protection board, stabiliser (LDO 1) passes through on the battery protection board HCtrl pin with heating device connects and supplies power.
The above lithium battery control circuit system supporting low-temperature scenes, wherein the battery protection board is provided with a second negative temperature coefficient thermistor (NTC 2) connected to the lithium battery cell, and the second negative temperature coefficient thermistor (NTC 2) is electrically connected to the single chip Microcomputer (MCU);
the positive pole (P +) of the battery protection board is connected with the positive pole of the lithium battery cell, and the negative pole (P-) of the battery protection board is respectively connected with the heating device and the negative pole of the lithium battery cell.
The lithium battery control circuit system supporting the low-temperature scene is characterized in that the voltage regulator (LDO 1) is a low dropout linear voltage regulator.
The above lithium battery control circuit system supporting low-temperature scene use, wherein a switch is arranged between the single chip Microcomputer (MCU) and the first power supply (VCC), and the switch is controlled by the system AP.
The above lithium battery control circuit system supporting low-temperature scenes, wherein the heating device is a heating wire or a cooling fin or a heating fin.
According to the above-mentioned the utility model relates to a lithium cell control circuit system that support low temperature scene to use provides's technical scheme has following technological effect:
by increasing the number of interface pins between the control mainboard and the lithium battery cell, the temperature calculation and heating control circuit of the lithium battery cell is placed in the control mainboard, and the normal use of the PDA in a low-temperature scene can be realized by using the lithium battery body with the heating device and the face heating plate;
compared with the scheme of placing the control circuit on the battery protection board, the scheme can reduce the required area and space of the protection board, greatly reduce the power consumption of the battery monomer and avoid the problem of high power consumption in low-temperature storage;
under the condition of not changing the electrolyte formula of the conventional lithium battery, the PDA handheld device can support normal use in a low-temperature environment completely through design and adjustment on a circuit and a structure.
Drawings
Fig. 1 is a schematic structural diagram of a lithium battery control circuit system supporting low-temperature scene usage according to the present invention.
Wherein the reference numbers are as follows:
the control system comprises a control mainboard 101, a lithium battery cell 102, a battery protection board 103, a heating device 104 and a cell shell 105.
Detailed Description
In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following specific drawings.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The utility model provides a lithium battery control circuit system supporting low temperature scene use, which aims to calculate the temperature of a lithium battery cell and place a heating control circuit into a control mainboard by increasing the number of interface pins between the control mainboard and the lithium battery cell, and can realize the normal use of PDA under the low temperature scene by using a lithium battery body with a heating device and a surface heating plate;
compared with the scheme of placing the control circuit on the battery protection board, the scheme can reduce the required area and space of the protection board, greatly reduce the power consumption of the battery monomer and avoid the problem of high power consumption in low-temperature storage;
under the condition of not changing the electrolyte formula of the conventional lithium battery, the PDA handheld device can support normal use in a low-temperature environment completely through design and adjustment on a circuit and a structure.
In a first aspect, as shown in fig. 1, a first embodiment:
a lithium battery control circuit system supporting low-temperature scenes comprises a control mainboard 101, a lithium battery cell 102, a battery protection board 103, heating devices 104 and a first negative temperature coefficient thermistor NTC1, wherein the two sides of the lithium battery cell 102 are both connected with the heating devices 104, the first negative temperature coefficient thermistor NTC1 is connected to one side of any one of the heating devices 104, and the lithium battery cell 102 is connected with the battery protection board 103;
the control main board 101 is provided with a single chip microcomputer MCU and a voltage stabilizer LDO1, the single chip microcomputer MCU is connected with a first power supply VCC, a voltage stabilizer LDO1 is connected with a second power supply VBAT, a first negative temperature coefficient thermistor NTC1 is electrically connected with an ADC channel of the single chip microcomputer MCU, the single chip microcomputer MCU controls and is connected with a switch of the voltage stabilizer LDO1, the voltage stabilizer LDO1 is connected with an HCtrl pin on the battery protection board 103, and the voltage stabilizer LDO1 is connected with the heating device 104 through the HCtrl pin on the battery protection board 103 for;
first negative temperature coefficient thermistor NTC1 detects lithium electricity core 102's temperature, and with the temperature data transmission to single chip microcomputer MCU who detects, when the temperature that detects is less than the setting value such as 10 degrees, single chip microcomputer MCU control stabiliser LDO1 opens, and be connected with heating device 104 through the HCtrl pin, give heating device 104 power supply and realize the function to lithium electricity core 102 heating, detect lithium electricity core 102 temperature and rise to the setting value such as 30 degrees back single chip microcomputer MCU control stabiliser LDO1 and close until first negative temperature coefficient thermistor NTC1, the stop heating, can carry out the presetting of temperature through control mainboard 101.
The battery protection board 103 is provided with a second negative temperature coefficient thermistor NTC2 connected to the lithium battery cell 102, the second negative temperature coefficient thermistor NTC2 is electrically connected to the MCU, the second negative temperature coefficient thermistor NTC2 is a negative temperature coefficient thermistor for detecting the cell temperature of a conventional battery, the NTC temperature detection is mainly used at the AP platform chip end to ensure the safety of the battery, and the first negative temperature coefficient thermistor NTC1 is mainly used for monitoring the cell temperature data of the heating device after the heating of the cell and mainly used for the MCU to judge the actual heating;
the positive pole P + of the battery protection board 103 is connected to the positive pole of the lithium battery cell 102, the negative pole P-of the battery protection board 103 is respectively connected to the heating device 104 and the negative pole of the lithium battery cell 102, and the lithium battery cell 102 is provided with a cell shell 105;
the positive P +, negative P-, ID pins of the battery protection board 103 are respectively connected with the control main board 101.
The regulator LDO1 is a low dropout linear regulator.
The heating device 104 is a heating wire or a heat sink or a heating plate, because the voltage stabilizer of the heating device 104 is at the end of the control mainboard 101, the heating device 104 is in a power-off state when the lithium battery is not connected to the whole system, and heating cannot be started due to a low-temperature state, and because the control system circuit is on the mainboard, the static power consumption of the battery protection board 103 is completely consistent with that of the conventional battery protection board 103, and no extra power consumption exists.
The single chip microcomputer MCU is connected with the first power supply VCC in a normal power supply mode, namely the lithium battery cell 102 is connected and powered, so that the machine can be started and charged at any time at low temperature.
Second aspect, as shown in fig. 1, a second embodiment:
a lithium battery control circuit system supporting low-temperature scene use comprises a control mainboard 101, a lithium battery cell 102, a battery protection board 103, a heating device 104 and a first negative temperature coefficient thermistor NTC1, wherein the heating device 104 is arranged on one side of the lithium battery cell 102, the first negative temperature coefficient thermistor NTC1 is connected to the other side of the heating device 104, and the lithium battery cell 102 is connected with the battery protection board 103;
the control main board 101 is provided with a single chip microcomputer MCU and a voltage stabilizer LDO1, the single chip microcomputer MCU is connected with a first power supply VCC, a voltage stabilizer LDO1 is connected with a second power supply VBAT, a first negative temperature coefficient thermistor NTC1 is electrically connected with the single chip microcomputer MCU, the single chip microcomputer MCU is electrically connected with the voltage stabilizer LDO1, the voltage stabilizer LDO1 is connected with an HCtrl pin on the battery protection board 103, and a voltage stabilizer LDO1 is connected with the heating device 104 through the HCtrl pin on the battery protection board 103 for supplying power;
first negative temperature coefficient thermistor NTC1 detects lithium electricity core 102's temperature, and with the temperature data transmission to single chip microcomputer MCU who detects, when the temperature that detects is less than the setting value such as 10 degrees, single chip microcomputer MCU control stabiliser LDO1 opens, and be connected with heating device 104 through the HCtrl pin, give heating device 104 power supply and realize the function to lithium electricity core 102 heating, detect lithium electricity core 102 temperature and rise to the setting value such as 30 degrees back single chip microcomputer MCU control stabiliser LDO1 and close until first negative temperature coefficient thermistor NTC1, the stop heating, can carry out the presetting of temperature through control mainboard 101.
The battery protection board 103 is provided with a second negative temperature coefficient thermistor NTC2 connected to the lithium battery cell 102, the second negative temperature coefficient thermistor NTC2 is electrically connected to the MCU, the second negative temperature coefficient thermistor NTC2 is a negative temperature coefficient thermistor for detecting the cell temperature of a conventional battery, the NTC temperature detection is mainly used at the AP platform chip end to ensure the safety of the battery, and the negative temperature coefficient thermistor NTC1 is mainly used for monitoring the cell temperature data of the heating device after the heating of the cell and mainly used for the MCU to judge the heating;
the positive pole P + of the battery protection board 103 is connected to the positive pole of the lithium battery cell 102, the negative pole P-of the battery protection board 103 is respectively connected to the heating device 104 and the negative pole of the lithium battery cell 102, and the lithium battery cell 102 is provided with a cell shell 105;
the positive P +, negative P-, ID pins of the battery protection board 103 are respectively connected with the control main board 101.
The regulator LDO1 is a low dropout linear regulator.
The heating device 104 is a heating wire or a heat sink or a heating plate, because the voltage stabilizer of the heating device 104 is at the end of the control mainboard 101, the heating device 104 is in a power-off state when the lithium battery is not connected to the whole system, and heating cannot be started due to a low-temperature state, and because the control system circuit is on the mainboard, the static power consumption of the battery protection board 103 is completely consistent with that of the conventional battery protection board 103, and no extra power consumption exists.
If the heating system is started in a starting-up state, a switch is arranged between the MCU and the first power supply VCC, the switch is controlled by the system AP, the MCU is started to supply power when the machine is charged, and the heating device 104 is controlled to be started by the system AP.
To sum up, the utility model discloses a lithium battery control circuit system supporting low temperature scene to use can be through increasing the interface pin quantity between control mainboard and the lithium electricity core, puts lithium electricity core temperature calculation and heating control circuit into the control mainboard, uses the lithium cell body of taking heating device and face heating panel, can realize PDA under the low temperature scene and normally uses;
compared with the scheme of placing the control circuit on the battery protection board, the scheme can reduce the required area and space of the protection board, greatly reduce the power consumption of the battery monomer and avoid the problem of high power consumption in low-temperature storage;
under the condition of not changing the electrolyte formula of the conventional lithium battery, the PDA handheld device can support normal use in a low-temperature environment completely through design and adjustment on a circuit and a structure.
The above description has been made of specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (5)
1. The lithium battery control circuit system supporting the use in the low-temperature scene is characterized by comprising a control mainboard, a lithium battery cell, a battery protection board, a heating device and a first negative temperature coefficient thermistor (NTC 1), wherein the heating device is connected to both sides of the lithium battery cell, the first negative temperature coefficient thermistor (NTC 1) is connected to the heating device, and the lithium battery cell is connected with the battery protection board;
be equipped with singlechip (MCU) and stabiliser (LDO 1) on the control mainboard, singlechip (MCU) is connected with first power (VCC), stabiliser (LDO 1) is connected with second power (VBAT), first negative temperature coefficient thermistor (NTC 1) electricity connect in the ADC passageway of singlechip (MCU), singlechip (MCU) control connection the switch of stabiliser (LDO 1), stabiliser (LDO 1) with HCtrl pin connection on the battery protection board, stabiliser (LDO 1) passes through on the battery protection board HCtrl pin with heating device connects and supplies power.
2. The lithium battery control circuit system supporting low-temperature scene use according to claim 1, wherein said battery protection board is provided with a second negative temperature coefficient thermistor (NTC 2) connected to said lithium battery cell, said second negative temperature coefficient thermistor (NTC 2) is electrically connected to said single chip Microcomputer (MCU);
the positive electrode (P +) of the battery protection board is connected to the lithium battery cell, and the negative electrode (P-) of the battery protection board is respectively connected to the heating device and the lithium battery cell.
3. The lithium battery control circuitry supporting low temperature scenario use of claim 1 or 2, wherein said voltage regulator (LDO 1) is a low dropout linear regulator.
4. The lithium battery control circuit system supporting the low-temperature scene as claimed in claim 3, wherein a switch is provided between the single chip Microcomputer (MCU) and the first power supply (VCC), and the switch is controlled by the system AP.
5. The lithium battery control circuit system supporting low-temperature scene use according to claim 1, 2 or 4, wherein the heating device is a heating wire or a heat sink or a heating plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020171553.4U CN211606147U (en) | 2020-02-15 | 2020-02-15 | Lithium battery control circuit system supporting low-temperature scene use |
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| CN202020171553.4U CN211606147U (en) | 2020-02-15 | 2020-02-15 | Lithium battery control circuit system supporting low-temperature scene use |
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| CN211606147U true CN211606147U (en) | 2020-09-29 |
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