CN216818437U - Wireless device capable of monitoring running state of battery cell and lithium battery structure thereof - Google Patents
Wireless device capable of monitoring running state of battery cell and lithium battery structure thereof Download PDFInfo
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- CN216818437U CN216818437U CN202220459569.4U CN202220459569U CN216818437U CN 216818437 U CN216818437 U CN 216818437U CN 202220459569 U CN202220459569 U CN 202220459569U CN 216818437 U CN216818437 U CN 216818437U
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Abstract
The utility model provides a wireless device capable of monitoring the running state of a battery cell, which comprises a processor, a temperature detection unit, a pressure detection unit, a real-time clock unit and a wireless transmission unit, wherein the processor is used for processing the running state of the battery cell; the core package is hermetically arranged in a metal shell of the lithium battery; the processor, the two temperature detection units, the pressure detection unit and the wireless transmission unit are all arranged on the surface of the core bag; the temperature detection unit detects the surface temperature of the core package and outputs a temperature detection signal; the pressure detection unit detects the air pressure in the metal shell and outputs an air pressure detection signal to the processor; the real-time clock unit outputs current time information to the processor; the wireless transmission unit is used for carrying out wireless transmission on the temperature detection signal, the air pressure detection signal and the current time information received by the processor at intervals.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery operation monitoring equipment, in particular to a wireless device capable of monitoring the operation state of a battery cell and a lithium battery structure thereof.
Background
Lithium ion batteries, for short lithium batteries, are batteries using a nonaqueous electrolyte and a lithium alloy metal oxide as a positive electrode material and graphite as a negative electrode material. The lithium battery has the characteristics of convenience in carrying, stable and reliable performance, reasonable structure and the like, and is widely applied to the field of direct-current charging and discharging. At present, the lithium ion battery is widely applied to the fields of intelligent equipment, electric automobiles, electric tools, aerospace and the like. For electric vehicles, the most important energy storage device is the battery.
During the use of lithium ion batteries, the temperature and pressure conditions of the batteries need to be monitored. The existing scheme is that the temperature and the pressure on the surface of a lithium battery with a metal shell are monitored, and acquired temperature and pressure signals are sent to a BMS or an automobile central control unit; however, the temperature and pressure conditions obtained in the mode are not the actual temperature or pressure in the battery, and a cable transmission mode is adopted, so that a wiring link is added, and precious space in the vehicle is occupied. In summary, it is desirable to provide a wireless device capable of monitoring the operation state of a lithium battery cell, which has a compact structure, is simple in wiring, and does not require an additional wiring space.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a wireless device capable of detecting an internal temperature and an internal pressure of a battery and a lithium battery structure thereof.
The technical scheme of the utility model is realized as follows:
on one hand, the utility model provides a wireless device capable of monitoring the running state of a battery core, which comprises a core package wound in a metal shell of a lithium battery, wherein a gap is formed between the side surface of the core package and the inner surface of the metal shell; the device also comprises a processor (1), two temperature detection units (2), a pressure detection unit (3), a real-time clock unit (4) and a wireless transmission unit (5);
the processor (1), the temperature detection unit (2), the pressure detection unit (3), the real-time clock unit (4) and the wireless transmission unit (5) are all arranged on the surface of the core package;
the output end of the temperature detection unit (2) is electrically connected with the processor (1); the temperature detection unit (2) detects the surface temperature of the core package and outputs a temperature detection signal to the processor (1);
the output end of the pressure detection unit (3) is electrically connected with the processor (1); the pressure detection unit (3) detects the air pressure in the metal shell and outputs an air pressure detection signal to the processor (1);
the output end of the real-time clock unit (4) is electrically connected with the processor (1), and the real-time clock unit (4) outputs current time information to the processor (1);
the wireless transmission unit (5) is in communication connection with the processor (1); the wireless transmission unit (5) carries out wireless transmission on the temperature detection signal, the air pressure detection signal and the current time information received by the processor (1) at intervals.
On the basis of the above technical solution, preferably, the temperature detection unit (2) includes a temperature detection chip U2; the processor (1) is provided with a plurality of data communication interfaces and a universal input/output interface; pin 3 of the temperature detection chip U2 is electrically connected with the +5V power supply; pin 1 of the temperature detection chip U2 is grounded; a pin 2 of the temperature detection chip U2 is used as an output end of the temperature detection unit (2) and is electrically connected with one end of the resistor R1, and the other end of the resistor R1 is electrically connected with a general input/output interface of the processor (1); the detection portion of the temperature detection chip U2 is attached to the side surface of the core pack.
Preferably, the pressure detection unit (3) includes a pressure detection chip U3; the pin 1 and the pin 2 of the pressure detection chip U3 are both electrically connected with a +3.3V power supply; the pin 7 and the pin 8 of the pressure detection chip U3 are respectively and electrically connected with one path of data communication interface of the processor (1) in a one-to-one correspondence manner, the pin 7 and the pin 8 of the pressure detection chip U3 are also electrically connected with one end of a pull-up resistor, and the other end of the pull-up resistor is electrically connected with a +3.3V power supply.
Further preferably, the real-time clock unit (4) comprises an RTC chip U5 and a crystal oscillator X1; pin 1 of the RTC chip U5 is electrically connected to the +5V power supply, pin 2 of the RTC chip U5 is electrically connected to one end of a capacitor C1 and one end of a crystal oscillator X1, pin 3 and pin 4 of the RTC chip U5 are both electrically connected to one end of a capacitor C2 and the other end of the crystal oscillator X1, and the other end of the capacitor C1 and the other end of the capacitor C2 are both grounded; and the pin 5, the pin 6 and the pin 7 of the RTC chip U5 are respectively and electrically connected with the other path of data communication interface of the processor (1) in a one-to-one correspondence manner.
Preferably, the wireless transmission unit (5) comprises a WIFI module U4, a reset switch S1 and a reset switch S2; pin 1 of the WIFI module U4 is electrically connected to pin 2 of the reset switch S1 and one end of the resistor R4, respectively, and pin 1 of the reset switch S1 is grounded; pin 3 of the WIFI module U4 is electrically connected to one end of the resistor R5, and the other end of the resistor R4 and the other end of the resistor R5 are both electrically connected to the +3.3V power supply; pin 15 and pin 16 of WIFI module U4 are both grounded; pin 18 of the WIFI module U4 is electrically connected to pin 1 of the reset switch S2, and pin 2 of the reset switch S2 is grounded; pins 21 and 22 of the WIFI module U4 are electrically connected to a data communication interface of the processor (1) in a one-to-one correspondence manner.
Preferably, the device also comprises an address setting unit (6), wherein the address setting unit (6) comprises a multi-dialing selection switch SW 1; pin 1, pin 2, pin 3, pin 4 and pin 5 of the multiple dialing selection switch SW1 are respectively electrically connected with different general input and output interfaces of the processor (1) in a one-to-one correspondence manner, and pin 6, pin 7, pin 8, pin 9 and pin 10 of the multiple dialing selection switch SW1 are all electrically connected with a +3.3V power supply; pin 1 and pin 10 of the multiple dialing selection switch SW1 are selectively connected, pin 2 and pin 9 are selectively connected, pin 3 and pin 8 are selectively connected, pin 4 and pin 7 are selectively connected, and pin 5 and pin 6 are selectively connected.
Preferably, the power supply unit (7) further comprises a power supply unit (7), the power supply unit (7) comprises a linear voltage stabilizing chip, an input end of the linear voltage stabilizing chip is electrically connected with a positive electrode of the core package, and an output end of the linear voltage stabilizing chip outputs the voltage after voltage reduction.
On the other hand, the utility model provides a lithium battery structure capable of monitoring the operation state of a battery core, which comprises a hollow metal shell (81), at least one core package (82), a cover plate (83), a plurality of positive lugs (84) and a plurality of negative lugs (85); the shell (81) is provided with an opening part, and the core bag (82) is arranged in the opening part; the end surface of the core bag (82) close to the opening part is provided with a positive electrode lug (84) and a negative electrode lug (85); the cover plate (83) is covered at the opening, the positive lug (84) or the negative lug (85) is abutted against the end face of one side, close to the opening, of the cover plate (83), and the positive lug (84) or the negative lug (85) is electrically connected with the cover plate (83); the wireless device capable of monitoring the operation state of the battery cell is arranged on the surface of the core package (82).
Preferably, the battery further comprises a hollow packaging part (86), and the wireless device capable of monitoring the operation state of the battery cell is arranged in the packaging part (86); a plurality of through holes (87) are formed in the end face of the packaging part (86), and the detection part of the temperature detection unit (2) penetrates through the through holes (87) and abuts against the surface of the core bag; the detection part of the pressure detection unit (3) is embedded in the through hole (87).
Compared with the prior art, the wireless device capable of monitoring the running state of the battery core and the lithium battery structure thereof provided by the utility model have the following beneficial effects:
(1) the detection of the temperature of the core package in the battery and the pressure change condition in the sealed environment in the battery is realized by arranging circuits such as a highly integrated and compact processor, a temperature detection unit, a pressure detection unit, a real-time clock unit, a wireless transmission unit and the like on the surface of the core package in the battery, and the temperature condition of the surface of the core package is more sensitively obtained and whether a large amount of gas is released is monitored; due to the adoption of a wireless signal transmission mode, physical wiring harness routing between the battery and the BMS or the automobile central control is omitted;
(2) the address setting unit is used for positioning and distinguishing different batteries or core packages when a plurality of batteries or core packages are used simultaneously, so that the fault batteries or core packages can be quickly positioned;
(3) the power supply of the wireless device is directly provided by the core package without additionally configuring a power supply;
(4) the scheme also provides a battery structure which encapsulates the core package and a wireless detection device for the running state of the battery core.
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 circuit block diagram of a wireless device capable of monitoring a battery cell operating state and a lithium battery structure thereof according to the present invention;
fig. 2 is a wiring diagram of a wireless device capable of monitoring the operation state of a battery cell and a temperature detection unit of a lithium battery structure of the wireless device;
fig. 3 is a wiring diagram of a wireless device capable of monitoring the operation state of a battery cell and a pressure detection unit of a lithium battery structure of the wireless device;
fig. 4 is a wiring diagram of a real-time clock unit of a wireless device capable of monitoring the operation state of a battery cell and a lithium battery structure thereof according to the present invention;
fig. 5 is a wiring diagram of a wireless transmission unit of a lithium battery structure of a wireless device capable of monitoring the operation state of a battery cell according to the present invention;
fig. 6 is a wiring diagram of an address setting unit of a wireless device capable of monitoring the operation state of a battery cell and a lithium battery structure thereof according to the present invention;
fig. 7 is a wiring diagram of a wireless device capable of monitoring the operation state of a battery cell and a power supply unit of a lithium battery structure thereof according to the present invention;
fig. 8 is a perspective view of a wireless device capable of monitoring a cell operating state and a lithium battery having a lithium battery structure according to the present invention;
fig. 9 is a perspective view of the exploded state of fig. 8.
Description of reference numerals: 1. a processor; 2. a temperature detection unit; 3. a pressure detection unit; 4. a real-time clock unit; 5. a wireless transmission unit; 6. an address setting unit; 7. a power supply unit; 81. a metal housing; 82. a core package; 83. a cover plate; 84. a positive tab; 85. a negative tab; 86. a sealing part; 87. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-7, in one aspect, the present invention provides a wireless device capable of monitoring an operation state of a battery cell, and the wireless device capable of monitoring an operation state of a battery cell includes a core package wound in a metal casing of a lithium battery, wherein a gap is formed between a side surface of the core package and an inner surface of the metal casing; the device also comprises a processor 1, a temperature detection unit 2, a pressure detection unit 3, a real-time clock unit 4 and a wireless transmission unit 5;
the processor 1, the temperature detection unit 2, the pressure detection unit 3, the real-time clock unit 4 and the wireless transmission unit 5 are all arranged on the surface of the core package; the core package in the scheme is formed by winding the positive electrode, the negative electrode and the isolating film. And after the core package is integrally placed into the metal shell, filling electrolyte into the metal shell.
The output end of the temperature detection unit 2 is electrically connected with the processor 1; the temperature detection unit 2 detects the surface temperature of the core package and outputs a temperature detection signal to the processor 1; of course, if there are multiple core packets within the metal shell; the temperature detection units 2 may be disposed on the surfaces of the respective core packages, or one temperature detection unit 2 may be disposed between two adjacent core packages.
The output end of the pressure detection unit 3 is electrically connected with the processor 1; the pressure detection unit 3 detects the air pressure in the metal shell and outputs an air pressure detection signal to the processor 1; the pressure detection unit 3 obtains the pressure change in the metal shell, and if the pressure is abnormally increased, the gas generation amount in the metal shell is abnormal, so that potential safety hazards exist.
The output end of the real-time clock unit 4 is electrically connected with the processor 1, and the real-time clock unit 4 outputs current time information to the processor 1; the real-time clock unit 4 is used for synchronizing with universal time and outputting currently detected time information;
the wireless transmission unit 5 is in communication connection with the processor 1; the wireless transmission unit 5 performs wireless transmission of the temperature detection signal, the air pressure detection signal and the current time information received by the processor 1 at intervals. The wireless transmission unit 5 is used for carrying out wireless data transmission with a vehicle-mounted BMS or an automobile central control, and wiring and maintenance work of wiring harnesses is omitted.
As shown in fig. 2, the drawing shows a specific wiring diagram of the temperature detection unit 2. In the figure, the temperature detection unit 2 includes a temperature detection chip U2; the processor 1 is provided with a plurality of data communication interfaces and a universal input/output interface; pin 3 of the temperature detection chip U2 is electrically connected with the +5V power supply; pin 1 of the temperature detection chip U2 is grounded; a pin 2 of the temperature detection chip U2 is electrically connected to one end of the resistor R1 as an output end of the temperature detection unit 2, and the other end of the resistor R1 is electrically connected to a general input/output interface of the processor 1; the detection portion of the temperature detection chip U2 is attached to either surface of the core package. The temperature detection chip U2 is a DS18B20 chip, and the output end of the chip outputs a digital signal and is electrically connected to the PA14 interface of the processor 1. The processor 1, shown as U1, may be implemented by STM32F103 series single chip microcomputer or similar devices of TI company and ATMEL company.
As shown in fig. 3, a detailed wiring diagram of the pressure detecting unit 3 is shown. The pressure detection unit 3 includes a pressure detection chip U3; the pin 1 and the pin 2 of the pressure detection chip U3 are both electrically connected with a +3.3V power supply; the pin 7 and the pin 8 of the pressure detection chip U3 are electrically connected with one data communication interface of the processor 1 in a one-to-one correspondence manner, the pin 7 and the pin 8 of the pressure detection chip U3 are also electrically connected with one end of a pull-up resistor, and the other end of the pull-up resistor is electrically connected with a +3.3V power supply. The pressure detection chip U3 selects a product MS5611 air pressure sensor of MESA company of Switzerland, integrates pressure sensing and analog-digital conversion functions, outputs digital signals and communicates with PB6 and PB7 interfaces of the processor 1 through SPI or IIC bus interfaces. In the figure, the two-wire IIC bus interface is electrically connected to a pull-up resistor R2 and R3 of 4.7 k ohms, respectively, in order to keep the voltage level stable. Since the inside of the battery is a sealed environment, when the generated gas is abnormally increased, the pressure inside the battery is changed, and whether the pressure state inside the battery is significantly changed or not can be acquired by the pressure detection unit 3.
As shown in fig. 4, the real-time clock unit 4 includes an RTC chip U5 and a crystal X1; pin 1 of the RTC chip U5 is electrically connected to the +5V power supply, pin 2 of the RTC chip U5 is electrically connected to one end of a capacitor C1 and one end of a crystal oscillator X1, pin 3 and pin 4 of the RTC chip U5 are both electrically connected to one end of a capacitor C2 and the other end of the crystal oscillator X1, and the other end of the capacitor C1 and the other end of the capacitor C2 are both grounded; pin 5, pin 6, and pin 7 of the RTC chip U5 are electrically connected to the other data communication interface of the processor 1, i.e., PB0, PB1, and PB2, respectively, in a one-to-one correspondence. The real-time clock unit 4 is abbreviated as RTC, has a function of setting a system clock or a timer, and the like, and a frequency source for operating the RTC is provided by a crystal oscillator X1. The RTC chip U5 selects DS1302 ZM. The chip has time precision from year to second, outputs single-byte or multi-byte digital time data and provides universal time information of the current measuring time. Pin 7 of the RTC chip U5 is a clock input terminal, and pin 5 is a reset/chip select terminal; pin 6 is a serial data input/output.
As shown in fig. 5, the wireless transmission unit 5 includes a WIFI module U4, a reset switch S1, and a reset switch S2; pin 1 of the WIFI module U4 is electrically connected to pin 2 of the reset switch S1 and one end of the resistor R4, respectively, and pin 1 of the reset switch S1 is grounded; pin 3 of the WIFI module U4 is electrically connected to one end of the resistor R5, and the other ends of the resistor R4 and the resistor R5 are both electrically connected to the +3.3V power supply; pin 15 and pin 16 of WIFI module U4 are both grounded; pin 18 of the WIFI module U4 is electrically connected to one end of pin 1 of the reset switch S2, and pin 2 of the reset switch S2 is grounded; pins 21 and 22 of the WIFI module U4 are electrically connected to a data communication interface of the processor 1 in a one-to-one correspondence manner. The WIFI module U4 selects an ESP-8266-12F, the working power supply of the chip is 3.3V, and the chip is reset when the reset switch S1 is pressed. Pin 18 of WIFI module U4, i.e., IO0, is a mode switching function, and is suspended as a sending mode, and when reset switch S2 is pressed to ground, it is a downloading or firmware upgrading mode. Pin 21 and pin 22 of WIFI module U4 are UART interfaces compatible with TTL, and are in direct communication connection with the serial communication interface of processor 1.
As shown in fig. 6, the core pack or the battery in the present scheme may have a plurality of groups, thereby forming a battery cluster or a battery module. In order to better distinguish the core packages in different positions, the utility model is also provided with an address setting unit 6. The address setting unit 6 includes a multiple dial selection switch SW 1; pin 1, pin 2, pin 3, pin 4 and pin 5 of the multiple dialing selection switch SW1 are electrically connected with different general input/output interfaces of the processor 1 in a one-to-one correspondence manner, and pin 6, pin 7, pin 8, pin 9 and pin 10 of the multiple dialing selection switch SW1 are electrically connected with a +3.3V power supply; pin 1 and pin 10 of the multiple dialing selection switch SW1 are selectively connected, pin 2 and pin 9 are selectively connected, pin 3 and pin 8 are selectively connected, pin 4 and pin 7 are selectively connected, and pin 5 and pin 6 are selectively connected. The multi-channel dial selection switch SW1 is five channels, and there are 2 powers of 5, i.e. 00000, 00001 … …, 11111, 32 different combinations, i.e. at most 32 address codes supporting 32 groups of core packages, according to different positions of each dial, and the address codes and the obtained temperature detection signals, air pressure detection signals and current time information together form the detection information of the current battery or core package. In actual use, the number and position of the dials of the multiple dial selection switch SW1 can be set according to actual needs so as to expand a larger capacity.
As shown in fig. 7, the power supply unit 7 includes a linear regulator chip, an input end of the linear regulator chip is electrically connected to a positive electrode of the core package, and an output end of the linear regulator chip outputs a stepped-down voltage. The power supply shown in the figure is divided into two-stage linear voltage stabilization, the first stage adopts a linear voltage stabilization chip K7805M to perform voltage reduction on the voltage provided by the core package for one time, and outputs a +5V power supply, and the second stage adopts a linear voltage stabilization chip LM 1117-3.3 to further output a +3.3V power supply.
As shown in fig. 8 and fig. 9, in another aspect, the present invention further provides a lithium battery structure capable of monitoring an operation state of a battery cell, specifically, the lithium battery structure includes a hollow metal casing 81, at least one core pack 82, a cover plate 83, a plurality of positive electrode tabs 84, and a plurality of negative electrode tabs 85; the case 81 has an opening portion in which each core pack 82 is disposed; if a plurality of core packets 82 exist, the adjacent core packets 82 are arranged at intervals, and the end faces, close to the opening part, of the core packets 82 are provided with positive electrode lugs 84 and negative electrode lugs 85; the cover plate 83 covers the opening, the positive tab 84 or the negative tab 85 is abutted to the end face of one side of the cover plate 83 close to the opening, and the positive tab 84 or the negative tab 85 is electrically connected with the cover plate 83; the wireless device capable of monitoring the operation state of the battery cell is arranged between two adjacent battery packs 82. Each core pack 82 is shown with a positive tab 84 and a negative tab 85 on its end faces. The wireless device capable of monitoring the operation state of the battery core needs to be provided with protective measures for discharging electrolyte, such as sealing and insulating arrangement. The gap between adjacent core packages or the gap between the core packages and the shell is used for placing the wireless device.
As a further improvement of the present invention, in order to provide a certain protection for the wireless device on the core package 82 and facilitate the installation and positioning of the wireless device, the present invention further includes a hollow enclosure portion 86, and the wireless device capable of monitoring the operation state of the battery cell is disposed in the enclosure portion 86; a plurality of through holes 87 are formed in the end face of the packaging part 86, and the detection part of the temperature detection unit 2 penetrates through the through holes 87 and abuts against the surface of the core package 82; the detection portion of the pressure detection unit 3 is embedded at the through hole 87. The encapsulant 86 may accommodate gaps between the core pack 82 and the metal housing 81 or between the two core packs 82 and limit the relative positions of the components of the wireless device that can monitor the operating state of the cells. The encapsulant 86 may be adhesively secured to the core package 82. A through hole 87 corresponding to the detection portion of the pressure detection unit 3 may also be opened on the side surface in the radial direction of the packing portion 86.
The chip used in the present invention is easy to obtain, and a corresponding technical manual can be obtained at the same time of obtaining the chip, and the present invention does not relate to improvement in procedures.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (9)
1. A wireless device capable of monitoring the operation state of a battery core comprises a core package wound in a metal shell of a lithium battery, wherein a gap is formed between the side surface of the core package and the inner surface of the metal shell; the method is characterized in that: the device comprises a processor (1), a temperature detection unit (2), a pressure detection unit (3), a real-time clock unit (4) and a wireless transmission unit (5);
the processor (1), the temperature detection unit (2), the pressure detection unit (3), the real-time clock unit (4) and the wireless transmission unit (5) are all arranged on the surface of the core package;
the output end of the temperature detection unit (2) is electrically connected with the processor (1); the temperature detection unit (2) detects the surface temperature of the core package and outputs a temperature detection signal to the processor (1);
the output end of the pressure detection unit (3) is electrically connected with the processor (1); the pressure detection unit (3) detects the air pressure in the metal shell and outputs an air pressure detection signal to the processor (1);
the output end of the real-time clock unit (4) is electrically connected with the processor (1), and the real-time clock unit (4) outputs current time information to the processor (1);
the wireless transmission unit (5) is in communication connection with the processor (1); the wireless transmission unit (5) carries out wireless transmission on the temperature detection signal, the air pressure detection signal and the current time information received by the processor (1) at intervals.
2. The wireless device capable of monitoring the cell operating state according to claim 1, wherein: the temperature detection unit (2) comprises a temperature detection chip U2; the processor (1) is provided with a plurality of data communication interfaces and a universal input and output interface; pin 3 of the temperature detection chip U2 is electrically connected with the +5V power supply; pin 1 of the temperature detection chip U2 is grounded; a pin 2 of the temperature detection chip U2 is used as an output end of the temperature detection unit (2) and is electrically connected with one end of the resistor R1, and the other end of the resistor R1 is electrically connected with a general input/output interface of the processor (1); the detection portion of the temperature detection chip U2 is attached to the side surface of the core pack.
3. The wireless device capable of monitoring the cell operating state according to claim 2, wherein: the pressure detection unit (3) comprises a pressure detection chip U3; the pin 1 and the pin 2 of the pressure detection chip U3 are both electrically connected with a +3.3V power supply; the pin 7 and the pin 8 of the pressure detection chip U3 are respectively and electrically connected with one path of data communication interface of the processor (1) in a one-to-one correspondence manner, the pin 7 and the pin 8 of the pressure detection chip U3 are also electrically connected with one end of a pull-up resistor, and the other end of the pull-up resistor is electrically connected with a +3.3V power supply.
4. The wireless device capable of monitoring the cell operating state according to claim 3, wherein: the real-time clock unit (4) comprises an RTC chip U5 and a crystal oscillator X1; pin 1 of the RTC chip U5 is electrically connected to the +5V power supply, pin 2 of the RTC chip U5 is electrically connected to one end of a capacitor C1 and one end of a crystal oscillator X1, pin 3 and pin 4 of the RTC chip U5 are both electrically connected to one end of a capacitor C2 and the other end of the crystal oscillator X1, and the other end of the capacitor C1 and the other end of the capacitor C2 are both grounded; and the pin 5, the pin 6 and the pin 7 of the RTC chip U5 are respectively and electrically connected with the other path of data communication interface of the processor (1) in a one-to-one correspondence manner.
5. The wireless device capable of monitoring the cell operating state according to claim 2, wherein: the wireless transmission unit (5) comprises a WIFI module U4, a reset switch S1 and a reset switch S2; pin 1 of the WIFI module U4 is electrically connected to pin 2 of the reset switch S1 and one end of the resistor R4, respectively, and pin 1 of the reset switch S1 is grounded; pin 3 of the WIFI module U4 is electrically connected to one end of the resistor R5, and the other ends of the resistor R4 and the resistor R5 are both electrically connected to the +3.3V power supply; pin 15 and pin 16 of WIFI module U4 are both grounded; pin 18 of the WIFI module U4 is electrically connected to pin 1 of the reset switch S2, and pin 2 of the reset switch S2 is grounded; pins 21 and 22 of the WIFI module U4 are electrically connected to a data communication interface of the processor (1) in a one-to-one correspondence manner.
6. The wireless device capable of monitoring the cell operating state according to claim 2, wherein: the device also comprises an address setting unit (6), wherein the address setting unit (6) comprises a multi-channel dial selection switch SW 1; pin 1, pin 2, pin 3, pin 4 and pin 5 of the multiple dialing selection switch SW1 are respectively electrically connected with different general input and output interfaces of the processor (1) in a one-to-one correspondence manner, and pin 6, pin 7, pin 8, pin 9 and pin 10 of the multiple dialing selection switch SW1 are all electrically connected with a +3.3V power supply; pin 1 and pin 10 of the multiple dialing selection switch SW1 are selectively connected, pin 2 and pin 9 are selectively connected, pin 3 and pin 8 are selectively connected, pin 4 and pin 7 are selectively connected, and pin 5 and pin 6 are selectively connected.
7. The wireless device capable of monitoring the cell operating state according to claim 2, wherein: the core bag power supply is characterized by further comprising a power supply unit (7), wherein the power supply unit (7) comprises a linear voltage stabilizing chip, the input end of the linear voltage stabilizing chip is electrically connected with the positive electrode of the core bag, and the output end of the linear voltage stabilizing chip outputs the voltage after voltage reduction.
8. The utility model provides a can monitor lithium battery structure of electricity core running state which characterized in that: the battery pack comprises a hollow metal shell (81), at least one core pack (82), a cover plate (83), a plurality of positive lugs (84) and a plurality of negative lugs (85); the case (81) has an opening, and each core pack (82) is disposed in the opening; the end surface of the core bag (82) close to the opening part is provided with a positive electrode lug (84) and a negative electrode lug (85); the cover plate (83) is covered on the opening, the positive lug (84) or the negative lug (85) is abutted against one side end face, close to the opening, of the cover plate (83), and the positive lug (84) or the negative lug (85) is electrically connected with the cover plate (83); the wireless device capable of monitoring the operation state of the battery cell of any one of claims 1 to 7 is arranged on the surface of a core package (82).
9. The lithium battery structure capable of monitoring the operation state of the battery cell of claim 8, wherein: the wireless device capable of monitoring the cell operation state according to any one of claims 1 to 7 is arranged in the packaging part (86); a plurality of through holes (87) are formed in the end face of the packaging part (86), and the detection part of the temperature detection unit (2) penetrates through the through holes (87) and abuts against the surface of the core bag; the detection part of the pressure detection unit (3) is embedded in the through hole (87).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220459569.4U CN216818437U (en) | 2022-03-04 | 2022-03-04 | Wireless device capable of monitoring running state of battery cell and lithium battery structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220459569.4U CN216818437U (en) | 2022-03-04 | 2022-03-04 | Wireless device capable of monitoring running state of battery cell and lithium battery structure thereof |
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| CN216818437U true CN216818437U (en) | 2022-06-24 |
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| CN202220459569.4U Active CN216818437U (en) | 2022-03-04 | 2022-03-04 | Wireless device capable of monitoring running state of battery cell and lithium battery structure thereof |
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