CN211364327U

CN211364327U - Battery management device and system

Info

Publication number: CN211364327U
Application number: CN201921796413.XU
Authority: CN
Inventors: 潘毅
Original assignee: Shanghai Xinran Electronic Technology Co ltd
Current assignee: Shanghai Umc Times Electronic Technology Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-28
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to a battery management device and system, the device includes: the battery information acquisition module is used for acquiring working state information and health state information of the lithium battery pack of the electric vehicle; the 4G communication module and the GPS positioning module are respectively connected with the second controller; the second controller is connected with the first controller, the 4G communication module is connected with a remote server, and the remote server is connected with an intelligent terminal of a user. The utility model provides a technical scheme uploads operating condition, health status information and positional information of lithium cell group to remote server through 4G communication module to through the synchronous relevant information of remote server to the user, realized the remote monitoring and the management to electric motor car lithium cell group, solved among the prior art electric motor car lithium cell group location difficult, the battery health status acquires difficult problem.

Description

Battery management device and system

Technical Field

The utility model relates to a battery management technology field, concretely relates to battery management device and system.

Background

With the prosperity of the shared electric vehicle industry, the charging problem of the shared electric vehicle increasingly considers the operation capacity of operators. The electric motor car mainly relies on the power supply of lithium cell group, how to monitor the electric quantity information of electric motor car lithium cell group and how to fix a position out the lithium cell group that needs to charge, is the problem that the operator needs to solve urgently.

The traditional battery management system only manages and protects the battery management system by an embedded hardware system in the battery pack, or stores battery operation data through built-in equipment such as an SD card, and has no remote real-time management capability for a large number of electric vehicle lithium battery packs applied to a rental market and a shared market, so that the problem that the battery power and health state information are difficult to acquire is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to overcome the deficiencies of the prior art, and provides a battery management device and system to solve the problem that the battery management system has no remote management capability to cause the difficulty in positioning, the difficulty in obtaining the power information and the health status information in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a battery management apparatus comprising:

the system comprises a first controller and a battery information acquisition module respectively connected with the first controller, wherein the battery information acquisition module is used for acquiring working state information and health state information of a lithium battery pack of the electric vehicle;

the second controller, and the 4G communication module and the GPS positioning module which are respectively connected with the second controller; the second controller is connected with the first controller, the 4G communication module is connected with a remote server, and the remote server is connected with an intelligent terminal of a user.

Preferably, the number of the battery information acquisition modules is at least two;

the battery information acquisition module is connected with the first controller through a digital isolator.

Preferably, the apparatus further comprises:

the power supply protection circuit and the voltage conversion circuit are connected with the first controller; wherein the content of the first and second substances,

the power supply protection circuit is used for performing overcurrent, overvoltage, undervoltage and short-circuit protection on charging and discharging of the lithium battery pack of the electric vehicle; the voltage conversion circuit is used for converting electric energy output by the monitored lithium battery pack of the electric vehicle into working voltage of the first controller.

Preferably, the apparatus further comprises:

the vibration sensor and the memory are connected with the second controller;

the vibration sensor is used for monitoring the vibration condition of the lithium battery pack of the electric vehicle, and sending vibration information to the second controller when detecting that the lithium battery pack of the electric vehicle is vibrated by external force, so that the second controller can transmit the vibration information to the remote server through the 4G communication module.

Preferably, any one of the battery information collecting modules includes:

the power management chip BQ7693003, pin No. 15 is grounded through a resistor R141; a capacitor C62 is connected between the No. 16 pin and the No. 17 pin; a capacitor C63 is connected between the No. 17 pin and the No. 18 pin, and the No. 18 pin is also connected with the No. 3 pin of the patch pin seat P9 through a logic circuit; a capacitor C64 is connected between the No. 18 pin and the No. 19 pin, and the No. 19 pin is also connected with the No. 4 pin of the patch pin seat P9 through a logic circuit; a capacitor C65 is connected between the No. 19 and No. 20 pins, and the No. 20 pin is also connected with the No. 5 pin of the patch pin seat P9 through a logic circuit; pin No. 21 is connected with pin No. 5 of patch needle seat P9 through resistor R117; pin No. 22 is connected with pin No. 6 of patch hub P9 through a logic circuit; a capacitor C67 is connected between the No. 22 pin and the No. 23 pin, and the No. 23 pin is also connected with the No. 6 pin of the patch pin seat P9 through a logic circuit; a capacitor C68 is connected between the No. 23 pin and the No. 24 pin, and the No. 24 pin is also connected with the No. 7 pin of the patch pin seat P9 through a logic circuit; a capacitor C69 is connected between the No. 24 pin and the No. 25 pin, and the No. 25 pin is also connected with the No. 8 pin of the patch pin seat P9 through a logic circuit; a capacitor C70 is connected between the No. 25 pin and the No. 26 pin, and the No. 26 pin is also connected with the No. 9 pin of the patch pin seat P9 through a logic circuit; pin 27 is connected to ground through a resistor R118 and a capacitor C61 which are connected in parallel; and a capacitor C82 is connected between the pin No. 28 and the pin No. 29.

Preferably, the logic circuit comprises:

the two input ends of the logic AND gate are respectively connected with the same pin of the external power management chip BQ7693003 through a resistor, and the output end of the logic AND gate is connected with a pin of the patch pin seat P9 through a resistor;

and the diode is connected between the two input ends of the logic AND gate.

Preferably, the first controller is a single chip microcomputer, and the model of the first controller is STM32F072C8T 6;

the model of the digital isolator is ADUMI250 ARZ;

the No. 1 pin of the power management chip BQ7693003 is grounded through a capacitor C80, and is connected with the No. 1 pin of a field effect transistor Q30 through a resistor R154; the No. 4 pin is connected with the No. 43 pin of the single chip microcomputer STM32F072C8T6 through a resistor R145 and a resistor R150 which are connected in series, and is grounded through the resistor R145 and a diode D70 which are connected in series; the No. 5 pin is connected with the No. 42 pin of the single chip microcomputer STM32F072C8T6 through a resistor R144 and a resistor R149 which are connected in series, and is grounded through the resistor R144 and a diode D68 which are connected in series; the No. 6 pin is connected with the No. 46 pin of the single chip microcomputer STM32F072C8T6 through a resistor R140, and is grounded through a capacitor C76 and a resistor R146 which are connected in parallel; pin No. 7 is grounded through a capacitor C73; the No. 8 pin is connected with the No. 38 pin of the singlechip STM32F072C8T6 through a field effect tube Q54; pin 9 is grounded through a capacitor C26 and a diode D27 which are connected in parallel; 11. after the

pins

12 and 14 are connected, the pin 1 connected with a field effect transistor Q12 is connected through a capacitor C74 and a resistor R49 which are connected in series; the No. 13 pin is connected between a capacitor C74 and a resistor R49 through a capacitor C75 and a resistor R143 which are connected in parallel; the pin No. 30 is connected with the pin No. 10 of the singlechip STM32F072C8T 6;

the field effect transistor Q30 and the field effect transistor Q54 are connected with the digital isolator through a peripheral circuit of the digital isolator; the No. 2 pin of the digital isolator is connected with the No. 22 pin of the single chip microcomputer STM32F072C8T6 through a resistor R59; and a No. 3 pin of the digital isolator is connected with a No. 21 pin of a singlechip STM32F072C8T6 through a resistor R60.

Preferably, the second controller is a single chip microcomputer, and the model of the second controller is STM32F030CCT 6;

the No. 9 pin of the single chip microcomputer STM32F030CCT6 is externally connected with a 3.3V power supply through an inductor FB1 and is grounded through a capacitor C11; after the No. 24 and No. 48 pins are connected with the No. 1 pin, the power supply is externally connected with a 3.3V power supply, and is grounded through capacitors C1, C2, C9 and C10 which are connected in parallel;

pins

47 and 23 are grounded; the No. 5 and No. 6 pins are externally connected with a crystal oscillator Y1; the No. 7 pin is externally connected with a 3.3V power supply through a resistor R13 and is grounded through a capacitor C17; pin 8 is grounded through a resistor R14, and pin 44 is grounded through a resistor R20; pins No. 12, No. 13, No. 26, No. 27 and No. 46 are connected with the 4G communication module; no. 39-41 pins and No. 45 pins are connected with the GPS positioning module; the No. 14-17 pins are connected with the memory;

pins

18, 32 and 33 are connected with the vibration sensor.

Preferably, the model of the 4G communication module is: EC 20;

the type of the GPS positioning module is as follows: AG 3331;

the model of the vibration sensor is as follows: BMA 250;

the type of the memory is as follows: PCT25VF 016-25-75-41-QAF.

Additionally, the utility model also provides a battery management system, include:

in the battery management device, the remote server and the intelligent terminal, wherein,

and the battery management device and the intelligent terminal are respectively in wireless connection with the remote server.

The utility model adopts the above technical scheme, possess following beneficial effect at least:

the battery information acquisition module is used for acquiring the working state information and the health state information of the lithium battery pack of the electric vehicle, the GPS positioning module is used for positioning the position information of the lithium battery pack, the 4G communication module is used for uploading the working state, the health state and the position information of the lithium battery pack to the remote server, and the remote server is used for synchronizing the relevant information to an intelligent terminal user, so that the remote monitoring and management of the lithium battery pack of the electric vehicle are realized, and the problems that the lithium battery pack of the electric vehicle is difficult to position, and the electric quantity and the health state information are difficult to acquire in the prior art are.

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 these drawings without creative efforts.

Fig. 1 is a schematic block diagram of a battery management apparatus according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a battery management device according to another embodiment of the present invention;

fig. 3 is a schematic diagram of a battery information collecting module according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a logic circuit according to an embodiment of the present invention;

fig. 5 is a schematic circuit diagram of the first controller, the battery information collecting module, and the digital isolator according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a second controller according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a 4G communication module according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a vibration sensor according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a memory according to an embodiment of the present invention;

fig. 10 is a schematic block diagram of a battery management system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Referring to fig. 1, an embodiment of the present invention provides a battery management device 100, including:

the system comprises a first controller 101 and a battery information acquisition module 103 respectively connected with the first controller 101, wherein the battery information acquisition module 103 is used for acquiring working state information and health state information of a lithium battery pack of the electric vehicle;

the system comprises a second controller 102, a 4G communication module 104 and a GPS positioning module 105 which are respectively connected with the second controller 102; the second controller 102 is connected to the first controller 101, the 4G communication module 104 is connected to a remote server, and the remote server is connected to an intelligent terminal of a user.

It should be noted that the technical solution provided in this embodiment is applicable to an electric vehicle, and is particularly applicable to a shared electric vehicle.

The working state information of the lithium battery pack of the electric vehicle comprises but is not limited to: voltage information, charge and discharge current information, remaining capacity information, and the like;

the health status information includes, but is not limited to: the capacity, health degree, performance state and the like of the storage battery, i.e. the ratio of the performance parameter to the nominal parameter after the battery is used for a period of time, for example, a newly-shipped battery is 100%, and the total scrappage is 0%, which is the ratio of the capacity discharged by the battery from a full-charge state to a cut-off voltage at a certain rate to the corresponding nominal capacity. Simply understood as the ultimate capacity size of the battery.

The type and model of the first controller and the second controller can be the same or different. Preferably, the first controller and the second controller are both STM series single-chip microcomputers.

The intelligent terminal includes but is not limited to: mobile phones, tablet computers, notebook computers, desktop computers, and the like.

It can be understood that, the technical scheme that this embodiment provided, the operating condition information and the health status information of electric motor car lithium cell group are gathered through battery information acquisition module, the positional information of lithium cell group is fixed a position through GPS orientation module, upload the operating condition of lithium cell group to remote server through 4G communication module, health status and positional information, and synchronous relevant information to the intelligent terminal user through remote server, thereby realize remote monitoring and management to electric motor car lithium cell group, the problem that electric motor car lithium cell group location is difficult among the prior art, electric quantity and health status information acquire difficultly is solved.

In addition, it can be understood that, because the 4G communication module is integrated into the battery management device, the technical solution provided in this embodiment can also support remote upgrade of the firmware of the battery management device, and a backend manager can issue a latest firmware version through a remote server to control firmware upgrade of the battery management device, or a user selects the latest firmware version through an intelligent terminal to implement firmware upgrade of the battery management device.

Moreover, it can be understood that the 4G communication module and the GPS positioning module are integrated into the battery management device, so that the problem that the lithium battery pack of the shared electric vehicle is easy to be stolen and cannot be recovered is effectively solved. Moreover, on the basis of the technical scheme that this embodiment provided, when lithium cell group is stolen, the user can close lithium cell group output (the lithium cell group that closes the output can not discharge, can only charge) through intelligent terminal remote to find back stolen lithium cell group through real-time update's GPS position, effectively solved the stolen difficult problem of retrieving and causing the loss easily of sharing electric motor car lithium cell group.

Referring to fig. 2, preferably, the number of the battery information collection modules 103 is at least two;

the battery information collecting module 103 is connected to the first controller 101 through a digital isolator 106.

It should be noted that, there are usually 20 lithium batteries in the lithium battery pack of the electric vehicle on the existing market, and the 20 lithium batteries provide 73V of direct current to the outside. In specific practice, every 10 lithium batteries can be divided into one group and connected with one battery information acquisition module, so that the working state of the lithium battery pack of the whole electric vehicle can be monitored through the two battery information acquisition modules. The two battery information acquisition modules are connected with the first controller through a digital isolator, so that interference can be isolated, and the accuracy of monitoring data is guaranteed.

Preferably, the apparatus further comprises:

a power protection circuit 107 and a voltage conversion circuit 108 connected to the first controller 101; wherein the content of the first and second substances,

the power supply protection circuit 107 is used for performing overcurrent, overvoltage, undervoltage and short-circuit protection on charging and discharging of the lithium battery pack of the electric vehicle; the voltage conversion circuit 108 is configured to convert electric energy output by the monitored lithium battery pack of the electric vehicle into a working voltage of the first controller.

Preferably, the apparatus further comprises:

a vibration sensor 109 and a memory connected to the second controller;

the vibration sensor 109 is configured to monitor a vibration condition of the lithium battery pack of the electric vehicle, and send vibration information to the second controller 102 when detecting that the lithium battery pack of the electric vehicle is vibrated by an external force, so that the second controller 102 uploads the vibration information to the remote server through the 4G communication module 104.

Note that, the vibration sensor functions include: firstly, when external force vibration is sensed, a trigger signal is sent to the second controller, the second controller finishes a dormant state and starts to work normally, so that the second controller is prevented from being in a constantly-started state, electric energy can be saved, and the service life of components can be prolonged; and secondly, when external force vibration is sensed to be larger than a threshold value, whether the lithium battery pack of the electric vehicle is stolen by violence is judged, and alarm information is sent to a remote server through a 4G communication module to prevent the lithium battery pack of the electric vehicle from being stolen.

Referring to fig. 3, preferably, any one of the battery information collecting modules includes:

It should be noted that the power management chip BQ7693003 in fig. 3 can detect and obtain the voltage information, the charging and discharging current information, the remaining power information, and the health status information of the lithium battery in real time.

Preferably, the logic circuit comprises:

and the diode is connected between the two input ends of the logic AND gate.

Since the structures of the logic circuits are the same, taking the schematic diagram of the logic circuit connected to pin No. 6 of patch pad P9 shown in fig. 4 as an example, the logic circuit includes:

the two input ends of the logic AND gate Q23 are respectively connected with the No. 22 pin of the external power management chip BQ7693003 through a resistor R124 and a resistor R134, and the output end of the logic AND gate Q23 is connected with the No. 6 pin of the patch pin seat P9 through a resistor R112;

and the diode D54 is connected between the two input ends of the logic AND gate.

It should be noted that TP96 and TP106 in fig. 4 are both test points.

Referring to fig. 5, preferably, the first controller is a single chip microcomputer, and the model is STM32F072C8T 6;

the model of the digital isolator is ADUMI250 ARZ;

pins

It should be noted that the chip U16A in fig. 5 is the same chip as the chip U16B in fig. 3, and since there are many chip pins and the wiring is relatively complex, in order to more clearly show the connection relationship between the various components, the schematic diagrams of the power management chips U16A and U16B are separately drawn. Only the portion of the pins of the power management chip that need to be connected to the lithium battery pack is shown in fig. 3, and only the portion of the pins of the power management chip that need to be connected to the first controller and the digital isolator is shown in fig. 5.

In addition, it should be noted that the chip U16A and the chip U1A in fig. 5 are both power management chips, and both chips are connected to 10 lithium batteries respectively and then connected to the first controller and the digital isolator, and the working principle is the same, so the pin portion of the chip U1A connected to the lithium battery pack is not shown here.

In addition, because with power protection circuit, the voltage conversion circuit that first controller links to each other all are conventional circuit, all have the installation on the current sharing electric motor car, not the utility model discloses a point, the utility model provides a technical scheme can reuse power protection circuit, the voltage conversion circuit among the prior art, so do not demonstrate this partial circuit schematic diagram here again.

Referring to fig. 6, preferably, the second controller is a single chip microcomputer, and the model is STM32F030CCT 6;

the No. 9 pin of the single chip microcomputer STM32F030CCT6 is externally connected with a 3.3V power supply through an inductor FB1 and is grounded through a capacitor C11; after the No. 24 and No. 48 pins are connected with the No. 1 pin, the power supply is externally connected with a 3.3V power supply, and is grounded through capacitors C1, C2, C9 and C10 which are connected in parallel; pins 47 and 23 are grounded; the No. 5 and No. 6 pins are externally connected with a crystal oscillator Y1; the No. 7 pin is externally connected with a 3.3V power supply through a resistor R13 and is grounded through a capacitor C17; pin 8 is grounded through a resistor R14, and pin 44 is grounded through a resistor R20; pins No. 12, No. 13, No. 26, No. 27 and No. 46 are connected with the 4G communication module; no. 39-41 pins and No. 45 pins are connected with the GPS positioning module; the No. 14-17 pins are connected with the memory; pins 18, 32 and 33 are connected with the vibration sensor.

Referring to fig. 7, preferably, the model of the 4G communication module is: EC 20;

the type of the GPS positioning module is as follows: AG 3331;

referring to fig. 8, the vibration sensor has the following types: BMA 250;

referring to fig. 9, the memory model is: PCT25VF 016-25-75-41-QAF.

It should be noted that the schematic circuit diagrams shown in fig. 3 to 9 are only an example of the present invention, and are an illustration for proving that the technical solution of the present invention can be implemented, and do not represent the technical solution of the present invention is limited to the schematic circuit diagrams shown in fig. 3 to 9, and any deformation or equivalent replacement (for example, replacing the model of the single chip microcomputer, replacing the model of the GPS positioning module, etc.) on the basis of the present invention is within the protection scope of the present invention.

In addition, referring to fig. 10, the present invention also provides a battery management system, including:

the battery management apparatus 100, the remote server 200 and the smart terminal 300 described above, wherein,

the battery management device 100 and the intelligent terminal 300 are wirelessly connected to the remote server 200.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Claims

1. A battery management apparatus, comprising:

2. The apparatus of claim 1,

at least two battery information acquisition modules are arranged;

3. The apparatus of claim 1, further comprising:

4. The apparatus of claim 1, further comprising:

the vibration sensor and the memory are connected with the second controller;

5. The apparatus of claim 2, wherein any of the battery information collection modules comprises:

6. The apparatus of claim 5, wherein the logic circuit comprises:

and the diode is connected between the two input ends of the logic AND gate.

7. The apparatus of claim 5,

the first controller is a single chip microcomputer, and the model of the first controller is STM32F072C8T 6;

the model of the digital isolator is ADUMI250 ARZ;

the No. 1 pin of the power management chip BQ7693003 is grounded through a capacitor C80, and is connected with the No. 1 pin of a field effect transistor Q30 through a resistor R154; the No. 4 pin is connected with the No. 43 pin of the single chip microcomputer STM32F072C8T6 through a resistor R145 and a resistor R150 which are connected in series, and is grounded through the resistor R145 and a diode D70 which are connected in series; the No. 5 pin is connected with the No. 42 pin of the single chip microcomputer STM32F072C8T6 through a resistor R144 and a resistor R149 which are connected in series, and is grounded through the resistor R144 and a diode D68 which are connected in series; the No. 6 pin is connected with the No. 46 pin of the single chip microcomputer STM32F072C8T6 through a resistor R140, and is grounded through a capacitor C76 and a resistor R146 which are connected in parallel; pin No. 7 is grounded through a capacitor C73; the No. 8 pin is connected with the No. 38 pin of the singlechip STM32F072C8T6 through a field effect tube Q54; pin 9 is grounded through a capacitor C26 and a diode D27 which are connected in parallel; 11. after the pins 12 and 14 are connected, the pin 1 connected with a field effect transistor Q12 is connected through a capacitor C74 and a resistor R49 which are connected in series; the No. 13 pin is connected between a capacitor C74 and a resistor R49 through a capacitor C75 and a resistor R143 which are connected in parallel; the pin No. 30 is connected with the pin No. 10 of the singlechip STM32F072C8T 6;

8. The apparatus of claim 4,

the second controller is a single chip microcomputer, and the model of the second controller is STM32F030CCT 6;

9. The apparatus of claim 8,

the model of the 4G communication module is as follows: EC 20;

the type of the GPS positioning module is as follows: AG 3331;

the model of the vibration sensor is as follows: BMA 250;

the type of the memory is as follows: PCT25VF 016-25-75-41-QAF.

10. A battery management system, comprising:

the battery management apparatus, the remote server, and the smart terminal according to any one of claims 1 to 9,