CN210778877U - Safe and reliable's split type lithium cell management system - Google Patents
Safe and reliable's split type lithium cell management system Download PDFInfo
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- CN210778877U CN210778877U CN201921953441.8U CN201921953441U CN210778877U CN 210778877 U CN210778877 U CN 210778877U CN 201921953441 U CN201921953441 U CN 201921953441U CN 210778877 U CN210778877 U CN 210778877U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model belongs to the technical field of lithium battery management, a safe and reliable's split type lithium battery management system is provided, include: the lithium battery pack management system comprises N lithium battery packs connected in series and a branch controller for managing the lithium batteries, wherein the N lithium battery packs connected in series are connected with the branch controller through data lines. The utility model discloses a safe and reliable's split type lithium cell management system has reduced the heat that waterproof lithium cell incasement electronic components did work and produce because of the electric current to greatly reduced because the heat accumulation leads to electronic components burning and causes the probability that lithium cell group explosion accident takes place, cooperates through the supervisory control device in parameter acquisition device and the branch accuse ware of waterproof lithium cell incasement simultaneously, manages and controls lithium cell group, has safe and easy to maintain's characteristics.
Description
Technical Field
The utility model relates to a lithium battery management technical field, concretely relates to safe and reliable's split type lithium battery management system.
Background
With the progress of society and the development of lithium battery technology, the traditional fuel vehicle enterprises, the motor enterprises and the like develop to the new energy electric vehicle industry in succession. The new energy locomotive mainly selects a lithium battery which has light weight, small volume, high capacity and is convenient for environmental protection as a power source.
Considerable electronic components have still been integrated except lithium cell electricity core in the waterproof lithium cell case of traditional power lithium cell group, like power tube, high-power resistance, equalizing resistance and electric capacity etc. thereby these electronic components easily produce the heat in sealed waterproof lithium cell case and cause the lithium cell overheated, thereby cause the interior high temperature of waterproof lithium cell case to cause electric core explosion by natural combustion.
In order to avoid the above problems, it is an urgent problem to separate the lithium battery core from the electronic components such as the power tube, the high-power resistor, and the balance resistor in the waterproof lithium battery box.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a pair of safe and reliable's split type lithium cell management system has reduced the heat that waterproof lithium cell incasement electronic components did work and produce because of the electric current to greatly reduced because the heat accumulation leads to the electronic components burning and causes the probability that lithium cell group explosion accident took place, cooperate through the supervisory control device in parameter acquisition device and the branch accuse ware of waterproof lithium cell incasement simultaneously, manage and control lithium cell group, have safe and easy to maintain's characteristics.
In order to solve the above problem, the utility model provides a following technical scheme:
a safe and reliable split type lithium battery management system comprises N lithium battery packs connected in series and a branch controller for managing lithium batteries, wherein the N lithium battery packs connected in series are connected with the branch controller through data lines,
the waterproof lithium battery pack comprises a lithium battery pack, and is characterized in that a waterproof lithium battery box is arranged on the outer side of the lithium battery pack, the top end of the waterproof lithium battery box is respectively provided with a data acquisition interface, a lithium battery pack total positive interface and a lithium battery pack total negative interface, the lithium battery pack total positive interface is connected with the positive electrode of an electric appliance, a parameter acquisition device is arranged inside the waterproof lithium battery box, one end of the parameter acquisition device is connected with the lithium battery pack, and the other end of the parameter acquisition device is respectively connected with the data acquisition interface;
the branch controller comprises a shell, wherein two PG cable waterproof joints are arranged on one side of the shell and are respectively connected with a negative electrode connecting wire of a waterproof lithium battery box and a negative electrode connecting wire of an electric appliance, the negative electrode connecting wire of the waterproof lithium battery box is connected with a main negative electrode interface of the lithium battery pack, the negative electrode connecting wire of the electric appliance is connected with a negative electrode of the electric appliance, a plurality of PG cable waterproof joints are arranged on the other side of the shell and are respectively connected with a plurality of waterproof flame-retardant wires, and a fan and a display circuit output interface are arranged in the middle area of two sides of the shell;
the inside management control device that is equipped with of casing, the management control device input through waterproof fire-retardant line with data acquisition interface connection, management control device's output respectively with fan and display circuit output interface connection.
Further, waterproof lithium battery box negative pole connecting wire with keep away from with electrical apparatus negative pole connecting wire the one end of casing is equipped with the public head of connecting wire respectively, waterproof lithium battery box negative pole connecting wire with electrical apparatus negative pole connecting wire respectively through the public head of connecting wire with lithium cell group total negative pole interface with the negative pole of electrical apparatus is connected, the waterproof fire-retardant line of a plurality of is kept away from the one end of casing is equipped with the public head of connecting wire, the waterproof fire-retardant line of a plurality of respectively through the public head of connecting wire with data acquisition interface connection.
Further, the lithium cell group of N series connection includes 1 group at least, a plurality of PG cable water joint includes 3 at least, a plurality of waterproof fire-retardant line includes 3 at least, a plurality of PG cable water joint with a plurality of waterproof fire-retardant line one-to-one.
Furthermore, a waterproof layer is arranged between the shell and the management control device and fixed with the shell through pouring sealant, the shell is a cast aluminum heat dissipation box, and the cast aluminum heat dissipation box is a sealing structure.
Furthermore, the parameter acquisition device comprises a current sensor, a temperature sensor and a pressure sensor, one end of the current sensor, one end of the temperature sensor and one end of the pressure sensor are connected with the lithium battery pack, the other end of the current sensor is connected with the data acquisition interface, the temperature sensor is connected with the data acquisition interface through a logic temperature switch, and the pressure sensor is connected with the data acquisition interface through a pressure exhaust valve;
the management control device comprises an equalizing circuit, a voltage acquisition circuit, a temperature sampling circuit, a charging logic control circuit and a discharging logic control circuit, wherein the input ends of the voltage acquisition circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit are respectively connected with a waterproof flame-retardant wire through a waterproof PG cable joint, the waterproof flame-retardant wire is connected with the data acquisition interface through a male joint of a connecting wire, and the output end of the voltage acquisition circuit is connected with a special battery pack monitoring chip; the temperature sampling circuit is connected with the signal input end of the single chip microcomputer, the single chip microcomputer is connected with the special battery monitoring chip, the output end of the special battery monitoring chip is connected with the input end of the equalizing circuit, the output end of the equalizing circuit is connected with the waterproof flame-retardant wire through a waterproof PG cable joint, the waterproof flame-retardant wire is connected with the data acquisition interface through a male connector, the signal output end of the single chip microcomputer is connected with the display circuit output interface, the fan and the temperature threshold value alarm circuit, the temperature threshold value alarm circuit is connected with the communication module through a CAN bus communication interface, and the communication module is connected with a user mobile phone or a cloud management platform through an; the output ends of the charging logic control circuit and the discharging logic control circuit are respectively connected with a charging MOS tube and a discharging MOS tube, one ends of the charging MOS tube and the discharging MOS tube are respectively connected with the electrical appliance negative electrode connecting wire through the PG cable waterproof joint, the other ends of the charging MOS tube and the discharging MOS tube are respectively connected with the waterproof lithium battery box negative electrode connecting wire through the PG cable waterproof joint, and the waterproof lithium battery box negative electrode connecting wire is connected with the lithium battery pack total negative electrode interface through a connecting wire male joint;
the management control device comprises a power supply conversion module, wherein the positive electrode of the power supply conversion module is connected with a total positive electrode interface of the lithium battery pack through a waterproof joint of a PG (polypropylene) cable, the negative electrode of the power supply conversion module is connected with a negative electrode connecting wire of the waterproof lithium battery box through the waterproof joint of the PG cable, and the output end of the power supply conversion module is respectively connected with the special battery monitoring chip, the single chip microcomputer, the fan, the temperature threshold value alarm circuit, the communication module, the equalizing circuit, the voltage sampling circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit.
Further, the special battery pack monitoring chip is an LTC6802, the single chip microcomputer is an MC9S08DZ60, and the communication module is a CAN bus communication module.
According to the above technical scheme, the beneficial effects of the utility model are that: through separating the parameter acquisition device and the management control device in the waterproof lithium battery box, the heat that electronic components done work and produce because of the electric current in the waterproof lithium battery box has been reduced to greatly reduced leads to the electronic components burning and causes the probability that the explosion accident of lithium cell group takes place because of the heat accumulation, cooperates through the parameter acquisition device in the waterproof lithium battery box and the management control device in the branch accuse ware simultaneously, manages and controls the lithium cell group, has safe and easy to maintain's characteristics.
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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the branch controller of the present invention;
fig. 3 is a schematic diagram of the present invention.
Reference numerals:
1-waterproof lithium battery box; 2-a branch controller;
11-a data acquisition interface; 12-the lithium battery pack overall positive interface; 13-overall negative interface of lithium battery pack; 21-a housing; 22-a waterproof layer; 23-a management control device;
211-waterproof lithium battery box negative pole connecting wire; 212-electrical appliance negative connection line; 213-connecting wire male; 214-waterproof flame retardant wire; 215-PG cable watertight joints; 216-a fan; 217-display circuit output interface.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1-2, the safe and reliable split-type lithium battery management system provided in this embodiment includes N lithium battery packs connected in series and a sub-controller 2 for managing lithium batteries, where the N lithium battery packs connected in series are connected to the sub-controller 2 through data lines,
the waterproof lithium battery pack is characterized in that a waterproof lithium battery box 1 is arranged on the outer side of a lithium battery pack, a data acquisition interface 11, a lithium battery pack total positive interface 12 and a lithium battery pack total negative interface 13 are respectively arranged at the top end of the waterproof lithium battery box 1, the lithium battery pack total positive interface 12 is connected with the positive electrode of an electric appliance, a parameter acquisition device is arranged inside the waterproof lithium battery box 1, one end of the parameter acquisition device is connected with the lithium battery pack, and the other end of the parameter acquisition device is respectively connected with the data acquisition interface 11;
the branch controller 2 comprises a branch controller 21, one side of the branch controller 21 is provided with two PG cable waterproof joints 215, the two PG cable waterproof joints 215 are respectively connected with a waterproof lithium battery box negative electrode connecting wire 211 and an electrical appliance negative electrode connecting wire 212, the waterproof lithium battery box negative electrode connecting wire 211 is connected with a lithium battery pack total negative electrode interface 13, the electrical appliance negative electrode connecting wire 212 is connected with a negative electrode of an electrical appliance, the other side of the branch controller 21 is provided with a plurality of PG cable waterproof joints 215, the plurality of PG cable waterproof joints 215 are respectively connected with a plurality of waterproof flame-retardant wires 214, and the middle areas of two sides of the branch controller 21 are provided with a fan 216 and a;
the inside management control device 23 that is equipped with of branch accuse ware 2, management control device 23's input is connected with data acquisition interface 11 through waterproof fire-retardant line 214, and management control device 23's output is connected with fan 216 and display circuit output interface 217 respectively.
In the in-service use, through separating parameter acquisition device and management control device 23 with in the waterproof lithium cell case 1, the heat that electronic components did work and produced because of the electric current has been reduced in the waterproof lithium cell case 1, and greatly reduced because the heat accumulation leads to the electronic components burning and causes the probability of lithium cell group explosion accident to take place, cooperate with management control device 23 in the branch accuse ware 2 through the parameter acquisition device in the waterproof lithium cell case 1 simultaneously, manage and control lithium cell group, be connected through waterproof fire-retardant line 214 between branch accuse ware 2 and the lithium cell group, be convenient for branch accuse ware 2 lay in the optional position of being connected with lithium cell group, need not carry out the rigidity, the flexibility has. The management control device 23 is respectively connected with the waterproof flame-retardant wire 214, the waterproof lithium battery box negative electrode connecting wire 211 and the electrical appliance negative electrode connecting wire 212 through the plurality of PG cable waterproof joints 215, and has a protection effect on the connection positions of the waterproof flame-retardant wire 214 and the management control device 23 and the connection positions of the waterproof lithium battery box 1 negative electrode connecting wire 211 and the electrical appliance negative electrode connecting wire 212 and the management control device 23.
In this embodiment, waterproof lithium battery box negative pole connecting wire 211 and with the one end that electrical apparatus negative pole connecting wire 212 kept away from branch accuse ware 21 are equipped with the public head of connecting wire 213 respectively, waterproof lithium battery box negative pole connecting wire 211 and with electrical apparatus negative pole connecting wire 212 respectively through the public head of connecting wire 213 with lithium cell group total negative pole interface 13 with electrical apparatus's negative pole be connected, the one end that branch accuse ware 2 was kept away from to a plurality of waterproof fire-retardant line 214 is equipped with the public head of connecting wire 213, a plurality of waterproof fire-retardant line 214 is connected with data acquisition interface 11 through the public.
In actual use, waterproof lithium battery box negative pole connecting wire 211, with the one end of electrical apparatus negative pole connecting wire 212 and waterproof fire-retardant line 214 be equipped with the public head of connecting wire 213, can effectively reduce waterproof lithium battery box negative pole connecting wire 211 and lithium cell group total negative pole interface 13 department and with the condition emergence that arouses circuit fault with the kneck of electrical apparatus negative pole connecting wire 212 and with the kneck of electrical apparatus because leak.
In this embodiment, the number of the lithium battery packs connected in series includes at least 1 pack, the number of the PG cable waterproof joints 215 includes at least 3, the number of the PG cable waterproof joints 214 includes at least 3, and the number of the PG cable waterproof joints 215 corresponds to the number of the PG cable waterproof joints 214 one to one.
In actual use, PG cable waterproof joint 215 and waterproof fire-retardant line 214 can increase and decrease according to the quantity of lithium cell group, have the characteristics that the practicality is strong.
In this embodiment, be equipped with waterproof layer 22 between branch accuse ware 2 and the supervisory control device, waterproof layer 22 is fixed with branch accuse ware 2 through the pouring sealant, and branch accuse ware 2 is cast aluminium heat dissipation box, and cast aluminium heat dissipation box is seal structure, has waterproof nature strong and does benefit to radiating characteristics.
Referring to fig. 3, the parameter collecting device includes a current sensor, a temperature sensor and a pressure sensor, one end of the current sensor, one end of the temperature sensor and one end of the pressure sensor are connected to the lithium battery pack, the other end of the current sensor is connected to the data collecting interface 11, the temperature sensor is connected to the data collecting interface 11 through a logic temperature switch, and the pressure sensor is connected to the data collecting interface 11 through a pressure exhaust valve;
the management control device comprises an equalizing circuit, a voltage acquisition circuit, a temperature sampling circuit, a charging logic control circuit and a discharging logic control circuit, wherein the input ends of the voltage acquisition circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit are respectively connected with a waterproof flame-retardant wire 214 through a PG cable waterproof joint 215, the waterproof flame-retardant wire 214 is connected with a data acquisition interface 11 through a connecting wire male joint 213, and the output end of the voltage acquisition circuit is connected with a special battery pack monitoring chip; the temperature sampling circuit is connected with the signal input end of the single chip microcomputer, the single chip microcomputer is connected with the special battery monitoring chip, the output end of the special battery monitoring chip is connected with the input end of the equalizing circuit, the output end of the equalizing circuit is connected with the waterproof flame-retardant wire 214 through a PG cable waterproof joint 215, the waterproof flame-retardant wire 214 is connected with the data acquisition interface 11 through a connecting wire male joint 213, the signal output end of the single chip microcomputer is connected with the display circuit output interface 217, the fan 216 and the temperature threshold value alarm circuit, the temperature threshold value alarm circuit is connected with the communication module through a CAN bus communication interface, and the communication module is connected with a user mobile phone or a cloud; the output ends of the charging logic control circuit and the discharging logic control circuit are respectively connected with a charging MOS tube and a discharging MOS tube, one ends of the charging MOS tube and the discharging MOS tube are respectively connected with an electrical appliance negative electrode connecting wire 212 through a PG cable waterproof joint 215, the other ends of the charging MOS tube and the discharging MOS tube are respectively connected with a waterproof lithium battery box negative electrode connecting wire 211 through a PG cable waterproof joint 215, and the waterproof lithium battery box negative electrode connecting wire 211 is connected with a lithium battery pack total negative electrode interface 13 through a connecting wire male joint 213;
the management control device comprises a power supply conversion module, the positive pole of the power supply conversion module is connected with a lithium battery pack main positive pole interface 12 through a PG cable waterproof joint 215, the negative pole of the power supply conversion module is connected with a waterproof lithium battery box negative pole connecting line 211 through the PG cable waterproof joint 215, and the output end of the power supply conversion module is respectively connected with a special battery monitoring chip, a single chip microcomputer, a fan 216, a temperature threshold value alarm circuit, a communication module, an equalization circuit, a voltage sampling circuit, a temperature sampling circuit, a charging logic control circuit and a discharging logic control circuit.
In actual use, the working current of the lithium battery pack, the temperature and the pressure in the waterproof lithium battery box 1 are collected through the current sensor, the temperature sensor and the pressure sensor and are sent to the branch controller 2 through the data collection interface 11; the branch controller 2 acquires voltage and temperature parameters in the waterproof lithium battery box 1 through a voltage acquisition circuit and a temperature acquisition circuit, respectively sends the acquired voltage and temperature parameters into the single chip microcomputer and the special battery pack monitoring chip, and controls high voltage, high temperature and overcurrent of the single lithium battery packs in the waterproof lithium battery box 1 through a balancing circuit so as to keep the voltages of the single lithium battery packs balanced; the charging logic control circuit and the discharging logic control circuit protect the lithium battery pack and control the charging and discharging processes of the lithium battery pack according to the voltage, temperature and current parameters of the lithium battery pack; meanwhile, the single chip microcomputer controls the fan 216 to work according to the acquired temperature parameters, the sub-controller 2 is cooled in an external cooling mode of the sub-controller 2, a display circuit output interface 217 is arranged on the sub-controller 2 and is convenient for being connected with an external display to monitor the working state of the lithium battery pack, a communication module arranged in the sub-controller 2 is convenient for being connected with a user mobile phone or a cloud management platform, the state information of the lithium battery pack is timely sent to a user or the cloud management platform, and the user and a factory dealer can conveniently know the working state of the lithium battery pack in time and maintain the lithium battery pack in time; the power conversion module supplies power for the special battery monitoring chip, the single chip microcomputer, the fan 216, the temperature threshold value alarm circuit, the communication module, the equalization circuit, the voltage sampling circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit respectively.
In this embodiment, the dedicated battery pack monitoring chip is LTC6802, the single chip microcomputer is MC9S08DZ60, and the communication module is a CAN bus communication module.
In practical use, the LTC6802 has a 12-bit ADC, which CAN detect the voltage of up to 12 serial cells, and the MC9S08DZ60 has the main functions of collecting the current and temperature, receiving the information from the LTC6802, and sending the battery configuration information to the user' S mobile phone or cloud management platform through the CAN bus communication module.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. The utility model provides a safe and reliable's split type lithium cell management system which characterized in that: comprises N lithium battery packs connected in series and a branch controller for managing the lithium batteries, wherein the N lithium battery packs connected in series are connected with the branch controller through a data line,
the waterproof lithium battery pack comprises a lithium battery pack, and is characterized in that a waterproof lithium battery box is arranged on the outer side of the lithium battery pack, the top end of the waterproof lithium battery box is respectively provided with a data acquisition interface, a lithium battery pack total positive interface and a lithium battery pack total negative interface, the lithium battery pack total positive interface is connected with the positive electrode of an electric appliance, a parameter acquisition device is arranged inside the waterproof lithium battery box, one end of the parameter acquisition device is connected with the lithium battery pack, and the other end of the parameter acquisition device is respectively connected with the data acquisition interface;
the branch controller comprises a shell, wherein two PG cable waterproof joints are arranged on one side of the shell and are respectively connected with a negative electrode connecting wire of a waterproof lithium battery box and a negative electrode connecting wire of an electric appliance, the negative electrode connecting wire of the waterproof lithium battery box is connected with a main negative electrode interface of the lithium battery pack, the negative electrode connecting wire of the electric appliance is connected with a negative electrode of the electric appliance, a plurality of PG cable waterproof joints are arranged on the other side of the shell and are respectively connected with a plurality of waterproof flame-retardant wires, and a fan and a display circuit output interface are arranged in the middle area of two sides of the shell;
the inside management control device that is equipped with of casing, the management control device input through waterproof fire-retardant line with data acquisition interface connection, management control device's output respectively with fan and display circuit output interface connection.
2. The safe and reliable split type lithium battery management system of claim 1, characterized in that: waterproof lithium battery box negative pole connecting wire with keep away from with electrical apparatus negative pole connecting wire the one end of casing is equipped with the public head of connecting wire respectively, waterproof lithium battery box negative pole connecting wire with electrical apparatus negative pole connecting wire respectively through the public head of connecting wire with lithium cell group total negative pole interface and with the negative pole connection of electrical apparatus, the waterproof fire-retardant line of a plurality of is kept away from the one end of casing is equipped with the public head of connecting wire, the waterproof fire-retardant line of a plurality of respectively through the public head of connecting wire with data acquisition interface connection.
3. The safe and reliable split type lithium battery management system of claim 1, characterized in that: the lithium cell group of N series connection includes 1 group at least, a plurality of PG cable water joint includes 3 at least, a plurality of waterproof fire-retardant line includes 3 at least, a plurality of PG cable water joint with a plurality of waterproof fire-retardant line one-to-one.
4. The safe and reliable split type lithium battery management system of claim 1, characterized in that: the waterproof layer is arranged between the shell and the management control device and fixed with the shell through pouring sealant, the shell is a cast aluminum heat dissipation box, and the cast aluminum heat dissipation box is a sealing structure.
5. The safe and reliable split type lithium battery management system of claim 1, characterized in that: the parameter acquisition device comprises a current sensor, a temperature sensor and a pressure sensor, one end of the current sensor, one end of the temperature sensor and one end of the pressure sensor are connected with the lithium battery pack, the other end of the current sensor is connected with the data acquisition interface, the temperature sensor is connected with the data acquisition interface through a logic temperature switch, and the pressure sensor is connected with the data acquisition interface through a pressure exhaust valve;
the management control device comprises an equalizing circuit, a voltage acquisition circuit, a temperature sampling circuit, a charging logic control circuit and a discharging logic control circuit, wherein the input ends of the voltage acquisition circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit are respectively connected with a waterproof flame-retardant wire through a waterproof PG cable joint, the waterproof flame-retardant wire is connected with the data acquisition interface through a male joint of a connecting wire, and the output end of the voltage acquisition circuit is connected with a special battery pack monitoring chip; the temperature sampling circuit is connected with the signal input end of the single chip microcomputer, the single chip microcomputer is connected with the special battery monitoring chip, the output end of the special battery monitoring chip is connected with the input end of the equalizing circuit, the output end of the equalizing circuit is connected with the waterproof flame-retardant wire through a waterproof PG cable joint, the waterproof flame-retardant wire is connected with the data acquisition interface through a male connector, the signal output end of the single chip microcomputer is connected with the display circuit output interface, the fan and the temperature threshold value alarm circuit, the temperature threshold value alarm circuit is connected with the communication module through a CAN bus communication interface, and the communication module is connected with a user mobile phone or a cloud management platform through an; the output ends of the charging logic control circuit and the discharging logic control circuit are respectively connected with a charging MOS tube and a discharging MOS tube, one ends of the charging MOS tube and the discharging MOS tube are respectively connected with the electrical appliance negative electrode connecting wire through the PG cable waterproof joint, the other ends of the charging MOS tube and the discharging MOS tube are respectively connected with the waterproof lithium battery box negative electrode connecting wire through the PG cable waterproof joint, and the waterproof lithium battery box negative electrode connecting wire is connected with the lithium battery pack total negative electrode interface through a connecting wire male joint;
the management control device comprises a power supply conversion module, wherein the positive electrode of the power supply conversion module is connected with a total positive electrode interface of the lithium battery pack through a waterproof joint of a PG (polypropylene) cable, the negative electrode of the power supply conversion module is connected with a negative electrode connecting wire of the waterproof lithium battery box through the waterproof joint of the PG cable, and the output end of the power supply conversion module is respectively connected with the special battery monitoring chip, the single chip microcomputer, the fan, the temperature threshold value alarm circuit, the communication module, the equalizing circuit, the voltage sampling circuit, the temperature sampling circuit, the charging logic control circuit and the discharging logic control circuit.
6. The safe and reliable split type lithium battery management system of claim 5, characterized in that: the special battery pack monitoring chip is LTC6802, the single chip microcomputer is MC9S08DZ60, and the communication module is a CAN bus communication module.
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| CN201921953441.8U CN210778877U (en) | 2019-11-13 | 2019-11-13 | Safe and reliable's split type lithium cell management system |
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| CN201921953441.8U CN210778877U (en) | 2019-11-13 | 2019-11-13 | Safe and reliable's split type lithium cell management system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112105179A (en) * | 2020-09-10 | 2020-12-18 | 湖南衡盈电子科技有限公司 | BMS connects waterproofing mechanism |
| CN115273684A (en) * | 2022-08-12 | 2022-11-01 | 武汉美格科技股份有限公司 | Integrated self-powered outdoor display screen system |
-
2019
- 2019-11-13 CN CN201921953441.8U patent/CN210778877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112105179A (en) * | 2020-09-10 | 2020-12-18 | 湖南衡盈电子科技有限公司 | BMS connects waterproofing mechanism |
| CN115273684A (en) * | 2022-08-12 | 2022-11-01 | 武汉美格科技股份有限公司 | Integrated self-powered outdoor display screen system |
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