CN216356051U - Power lithium battery capacitance detection protection device and circuit - Google Patents
Power lithium battery capacitance detection protection device and circuit Download PDFInfo
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- CN216356051U CN216356051U CN202122824871.3U CN202122824871U CN216356051U CN 216356051 U CN216356051 U CN 216356051U CN 202122824871 U CN202122824871 U CN 202122824871U CN 216356051 U CN216356051 U CN 216356051U
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Abstract
The utility model relates to the technical field of lithium batteries, and particularly discloses a power lithium battery capacitance detection protection device and a circuit, which comprise an upper shell, a lower shell, hollow columns, a plurality of fixing columns, a battery protection chip, an integrated MOS (metal oxide semiconductor) chip and a detection chip, wherein the number of the hollow columns is multiple, the hollow columns are respectively and fixedly connected with the lower shell, the fixing columns are respectively and fixedly connected with the upper shell and positioned in the upper shell, each fixing column is respectively arranged in the corresponding hollow column, the battery protection chip is fixedly connected with the lower shell and positioned in the lower shell, the integrated MOS chip is fixedly connected with the lower shell and positioned in the lower shell, and the detection chip is fixedly connected with the lower shell and positioned in the lower shell. The arrangement of the structure can make circuit connection simpler, and meanwhile, cost is reduced, so that the power lithium battery capacitance detection protection device can be popularized.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a power lithium battery capacitance detection protection device and circuit.
Background
At present, the lithium battery protection device usually only controls the charging and discharging processes of a lithium battery, and a few lithium battery protection devices with a temperature detection function fix a thermistor on the surface of the battery, and by reading the resistance value of the thermistor and then converting the resistance value into a temperature value, the thermistor is greatly influenced by the ambient temperature during measurement, and the measurement precision is low, so that the test data is inaccurate.
In the prior art, the temperature, the current and the voltage of the lithium battery are accurately measured by adopting a BQ2040 chip.
However, the circuit adopting the BQ2040 chip is complex and has high cost, which is inconvenient to popularize.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a capacitance detection protection device and circuit for a power lithium battery, and aims to solve the technical problems that a circuit adopting a BQ2040 chip in the prior art is complex, high in cost and inconvenient to popularize.
In order to achieve the above purpose, the utility model provides a power lithium battery capacitance detection protection device, which comprises an upper casing, a lower casing, a plurality of hollow columns, fixing columns, a battery protection chip, an integrated MOS chip and a detection chip, wherein the number of the hollow columns is multiple, the plurality of hollow columns are respectively and fixedly connected with the lower casing and respectively located inside the lower casing, the number of the fixing columns is multiple, the plurality of fixing columns are respectively and fixedly connected with the upper casing and located inside the upper casing, each fixing column is respectively arranged inside the corresponding hollow column, the battery protection chip is fixedly connected with the lower casing and located inside the lower casing, the integrated MOS chip is fixedly connected with the lower casing and located inside the lower casing, and the detection chip is fixedly connected with the lower casing, and is located inside the lower case.
The power lithium battery capacitance detection protection device further comprises a power input anode and a power input cathode, one end of the power input anode penetrates through the lower shell, one end of the power input cathode penetrates through the lower shell, and the power input anode and the power input cathode are located on the same side of the lower shell.
The power lithium battery capacitance detection protection device further comprises a power output anode and a power output cathode, one end of the power output anode is penetrated through the lower shell, one end of the power output cathode is penetrated through the lower shell, and the power output anode and the power output cathode are located on the same side of the lower shell.
The power lithium battery capacitance detection protection device further comprises a stud, wherein one end of the stud penetrates through the upper shell and is in threaded connection with the lower shell.
The upper shell and the lower shell are provided with anti-skid grains, the number of the anti-skid grains is multiple, and the anti-skid grains are uniformly distributed on the outer surface walls of the upper shell and the lower shell.
The utility model also provides a circuit of the power lithium battery capacitance detection protection device, which comprises the following steps:
the two S1 ends of the integrated MOS chip are connected and are connected with one end of a capacitor C5, the two S2 ends of the integrated MOS chip are connected, the two D1/D2 ends of the integrated MOS chip are connected, and the S2 end of the integrated MOS chip is connected with the cathode of the power supply output;
the DO end of the battery protection chip is connected with the G1 end of the integrated MOS chip, the VM end of the battery protection chip is connected with the S2 end of the integrated MOS chip through a resistor R7, the CO end of the battery protection chip is connected with the G2 end of the integrated MOS chip, the VDD end of the battery protection chip is connected with the VSS end of the battery protection chip through a capacitor C2, the VDD end of the battery protection chip is further connected to a connecting line of the positive electrode of the power output and the positive electrode of the power input through a resistor R6, and the VSS end of the battery protection chip is connected with the S1 end of the integrated MOS chip;
set up resistance R5 between the power input positive pole with electric capacity C5, the VSS end and the SNS end of detecting the chip are connected respectively resistance R5's both ends, the VDD end of detecting the chip passes through resistance R1 and connects the power input positive pole, the VDD end of detecting the chip still connects through electric capacity C1 the power input negative pole, the VIN end of detecting the chip passes through resistance R2 and connects the power input positive pole, the SDA end of detecting the chip connects resistance R4 and diode D1 respectively, resistance R4's the other end passes through two-way data line SDA and connects CPU, diode D1's the other end ground connection, the SCL end of detecting the chip connects resistance R3 and diode D2 respectively, resistance R3's the other end passes through clock line SCL and connects CPU, diode D2's the other end ground connection.
According to the power lithium battery capacitor detection protection device and the circuit, the upper shell covers the lower shell through the clamping of the hollow column and the fixing column, the integrated MOS chip, the battery protection chip and the detection chip are protected by the upper shell and the lower shell, the integrated MOS chip, the battery protection chip and the detection chip are convenient to mount and fix, the battery protection chip adopts an S8261 chip, the integrated MOS chip adopts an A08810 chip, and the detection chip adopts a DS2782 chip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a capacitance detection protection device for a power lithium battery according to the present invention.
Fig. 2 is an exploded view of a capacitance detection protection device of a power lithium battery of the utility model.
Fig. 3 is a circuit diagram of a capacitance detection protection device for a power lithium battery according to the present invention.
1-upper shell, 2-lower shell, 3-hollow column, 4-fixed column, 5-battery protection chip, 6-integrated MOS chip, 7-detection chip, 8-power input anode, 9-power input cathode, 10-power output anode, 11-power output cathode, 12-stud and 13-anti-skid pattern.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 3, the present invention provides a power lithium battery capacitance detection protection device, which includes an upper casing 1, a lower casing 2, a plurality of hollow columns 3, a plurality of fixing columns 4, a battery protection chip 5, an integrated MOS chip 6 and a detection chip 7, wherein the number of the hollow columns 3 is multiple, the plurality of hollow columns 3 are respectively and fixedly connected with the lower casing 2 and respectively located inside the lower casing 2, the number of the fixing columns 4 is multiple, the plurality of fixing columns 4 are respectively and fixedly connected with the upper casing 1 and located inside the upper casing 1, each fixing column 4 is respectively located inside the corresponding hollow column 3, the battery protection chip 5 is fixedly connected with the lower casing 2 and located inside the lower casing 2, the integrated MOS chip 6 is fixedly connected with the lower casing 2 and located inside the lower casing 2, the detection chip 7 is fixedly connected with the lower shell 2 and is positioned inside the lower shell 2.
Power lithium cell capacitance detection protection device still includes the anodal 8 of power input and power input negative pole 9, the one end of the anodal 8 of power input runs through casing 2 down, the one end of power input negative pole 9 runs through casing 2 down, just power input anodal 8 with power input negative pole 9 is located same one side of casing 2 down.
Power lithium cell capacitance detection protection device still includes power output positive pole 10 and power output negative pole 11, the one end of power output positive pole 10 runs through casing 2 down, the one end of power output negative pole 11 runs through casing 2 down, just power output positive pole 10 with power output negative pole 11 is located same one side of casing 2 down.
The power lithium battery capacitance detection protection device further comprises a stud 12, wherein one end of the stud 12 penetrates through the upper shell 1 and is in threaded connection with the lower shell 2.
Go up casing 1 with casing 2 all has anti-skidding line 13 down, the quantity of anti-skidding line 13 is many, many anti-skidding line 13 evenly distributed in go up casing 1 with the exterior wall of casing 2 down.
The utility model also provides a circuit of the power lithium battery capacitance detection protection device, which comprises the following steps:
two S1 ends of the integrated MOS chip 6 are connected and are connected with one end of a capacitor C5, two S2 ends of the integrated MOS chip 6 are connected, two D1/D2 ends of the integrated MOS chip 6 are connected, and an S2 end of the integrated MOS chip 6 is connected with the power output cathode 11;
the DO end of the battery protection chip 5 is connected with the G1 end of the integrated MOS chip 6, the VM end of the battery protection chip 5 is connected with the S2 end of the integrated MOS chip 6 through a resistor R7, the CO end of the battery protection chip 5 is connected with the G2 end of the integrated MOS chip 6, the VDD end of the battery protection chip 5 is connected with the VSS end of the battery protection chip 5 through a capacitor C2, the VDD end of the battery protection chip 5 is further connected to a connecting line of the power output positive electrode 10 and the power input positive electrode 8 through a resistor R6, and the VSS end of the battery protection chip 5 is connected with the S1 end of the integrated MOS chip 6;
set up resistance R5 between power input positive pole 8 with electric capacity C5, the VSS end and the SNS end of detecting chip 7 are connected respectively resistance R5's both ends, the VDD end of detecting chip 7 passes through resistance R1 and connects power input positive pole 8, the VDD end of detecting chip 7 still passes through electric capacity C1 and connects power input negative pole 9, the VIN end of detecting chip 7 passes through resistance R2 and connects power input positive pole 8, the SDA end of detecting chip 7 connects resistance R4 and diode D1 respectively, resistance R4's the other end passes through two-way data line SDA and connects CPU, diode D1's the other end ground connection, the SCL end of detecting chip 7 connects resistance R3 and diode D2 respectively, resistance R3's the other end passes through clock line SCL and connects CPU, diode D2's the other end ground connection.
The upper shell 1 covers the lower shell 2 by the clamping of the hollow column 3 and the fixing column 4, so that the integrated MOS chip 6, the battery protection chip 5 and the detection chip 7 are protected by the upper shell 1 and the lower shell 2, and the integrated MOS chip 6, the battery protection chip 5 and the detection chip 7 are conveniently mounted and fixed, the battery protection chip 5 adopts an S8261 chip, the integrated MOS chip 6 adopts an a08810 chip, the power input anode 8 and the power input cathode 9 are connected with a power supply, the power output anode 10 and the power output cathode 11 are connected with a protection circuit to form a loop, the stud 12 fixes the upper shell 1 and the lower shell 2, and the upper shell 1 and the lower shell 2 are prevented from being easily opened, the setting of antiskid line 13 can be so that taking apart when going up casing 1, play effectual antiskid, detect chip 7 and adopt the DS2782 chip, the setting of above structure can be so that circuit connection is simpler, and simultaneously cost reduction makes power lithium cell electric capacity detects protection device can popularize.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (6)
1. A capacitance detection protection device for a power lithium battery is characterized in that,
the battery protection chip is fixedly connected with the lower shell and positioned in the lower shell, the integrated MOS chip is fixedly connected with the lower shell and positioned in the lower shell, and the detection chip is fixedly connected with the lower shell and positioned in the lower shell.
2. The power lithium battery capacitance detection protection device of claim 1,
the power lithium battery capacitance detection protection device further comprises a power input anode and a power input cathode, wherein one end of the power input anode is penetrated through the lower shell, one end of the power input cathode is penetrated through the lower shell, and the power input anode and the power input cathode are located on the same side of the lower shell.
3. The power lithium battery capacitance detection protection device of claim 2,
the power lithium battery capacitance detection protection device further comprises a power output anode and a power output cathode, wherein one end of the power output anode is penetrated through the lower shell, one end of the power output cathode is penetrated through the lower shell, and the power output anode and the power output cathode are located on the same side of the lower shell.
4. The power lithium battery capacitance detection protection device of claim 3,
the power lithium battery capacitance detection protection device further comprises a stud, wherein one end of the stud penetrates through the upper shell and is in threaded connection with the lower shell.
5. The power lithium battery capacitance detection protection device of claim 4,
the upper shell and the lower shell are provided with anti-skid grains, the number of the anti-skid grains is multiple, and the anti-skid grains are uniformly distributed on the outer surface walls of the upper shell and the lower shell.
6. A power lithium battery capacitance detection protection circuit applied to the power lithium battery capacitance detection protection device as claimed in claim 5,
the two S1 ends of the integrated MOS chip are connected and are connected with one end of a capacitor C5, the two S2 ends of the integrated MOS chip are connected, the two D1/D2 ends of the integrated MOS chip are connected, and the S2 end of the integrated MOS chip is connected with the cathode of the power supply output;
the DO end of the battery protection chip is connected with the G1 end of the integrated MOS chip, the VM end of the battery protection chip is connected with the S2 end of the integrated MOS chip through a resistor R7, the CO end of the battery protection chip is connected with the G2 end of the integrated MOS chip, the VDD end of the battery protection chip is connected with the VSS end of the battery protection chip through a capacitor C2, the VDD end of the battery protection chip is further connected to a connecting line of the positive electrode of the power output and the positive electrode of the power input through a resistor R6, and the VSS end of the battery protection chip is connected with the S1 end of the integrated MOS chip;
set up resistance R5 between the power input positive pole with electric capacity C5, the VSS end and the SNS end of detecting the chip are connected respectively resistance R5's both ends, the VDD end of detecting the chip passes through resistance R1 and connects the power input positive pole, the VDD end of detecting the chip still connects through electric capacity C1 the power input negative pole, the VIN end of detecting the chip passes through resistance R2 and connects the power input positive pole, the SDA end of detecting the chip connects resistance R4 and diode D1 respectively, resistance R4's the other end passes through two-way data line SDA and connects CPU, diode D1's the other end ground connection, the SCL end of detecting the chip connects resistance R3 and diode D2 respectively, resistance R3's the other end passes through clock line SCL and connects CPU, diode D2's the other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122824871.3U CN216356051U (en) | 2021-11-15 | 2021-11-15 | Power lithium battery capacitance detection protection device and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122824871.3U CN216356051U (en) | 2021-11-15 | 2021-11-15 | Power lithium battery capacitance detection protection device and circuit |
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| Publication Number | Publication Date |
|---|---|
| CN216356051U true CN216356051U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122824871.3U Active CN216356051U (en) | 2021-11-15 | 2021-11-15 | Power lithium battery capacitance detection protection device and circuit |
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| CN (1) | CN216356051U (en) |
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- 2021-11-15 CN CN202122824871.3U patent/CN216356051U/en active Active
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