Lithium ion battery remote monitoring device and battery management assembly

Abstract

The utility model discloses a lithium ion battery remote monitoring device and a battery management assembly, and belongs to the technical field of power supply manufacturing technologies. The lithium ion battery remote monitoring device comprises a main control unit and a communication unit. The communication unit comprises a first communication interface and a second communication interface, the first communication interface is connected with a first group of lithium ion batteries in the battery pack, the second communication interface is connected with client equipment through a network, the battery pack comprises N groups of lithium ion batteries which are sequentially connected in series, and N is greater than or equal to 2; the main control unit is used for sending a communication request to the first group of lithium ion batteries through a first communication interface of the communication unit; and the communication unit is used for receiving the battery pack state information returned by the first group of lithium ion batteries through the first communication interface, and is also used for uploading the battery pack state information to client equipment through the second communication interface. According to the invention, the remote monitoring of the lithium ion battery can be realized on the basis of not changing the appearance design of the existing battery.

Description

Technical Field

[0001] The present application relates to the field of power supply manufacturing technology, and in particular to a lithium-ion battery remote monitoring device and a battery management component. Background Art

[0002] With the rapid development of lithium-ion battery technology, enabling remote monitoring of battery system data and promoting intelligent battery system monitoring are key trends in the development of lithium-ion battery control systems. Furthermore, with the increasing demand for intelligent lithium-ion products, reducing the maintenance and operating costs of intelligent monitoring and building a remote monitoring platform for battery systems are becoming a monitoring and management model recognized and desired by both domestic and international customers. However, connecting each lithium-ion battery in a communication site to a client device (i.e., a client monitoring system) is costly. Furthermore, remote monitoring of a single battery pack requires modifications to the chassis's external interface design, resulting in high design and maintenance costs.

[0003] Therefore, how to achieve remote monitoring of lithium-ion batteries without changing the existing battery shape design is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] The purpose of this application is to provide a lithium-ion battery remote monitoring device and a battery management component, which can realize remote monitoring of lithium-ion batteries without changing the existing battery appearance design.

[0005] To solve the above technical problems, the present application provides a lithium-ion battery remote monitoring device, comprising a main control unit and a communication unit; the communication unit comprises a first communication interface and a second communication interface, the first communication interface being connected to a first group of lithium-ion batteries in a battery pack, and the second communication interface being connected to a client device via a network, wherein the battery pack comprises N groups of lithium-ion batteries connected in series, where N is greater than or equal to 2;

[0006] The main control unit is configured to send a communication request to the first group of lithium-ion batteries through the first communication interface of the communication unit;

[0007] The communication unit is used to receive the battery pack status information returned by the first group of lithium-ion batteries through the first communication interface, and is also used to upload the battery pack status information to the client device through the second communication interface; wherein the battery pack status information includes the battery status information of N groups of lithium-ion batteries in the battery pack.

[0008] Optionally, also include:

[0009] A power supply unit is connected to the main control unit and the communication unit respectively, and is used to provide power to the main control unit and the communication unit.

[0010] Optionally, the power supply unit includes a power supply interface, and the power supply interface is used to connect to a DC power supply or the battery pack.

[0011] Optionally, also include:

[0012] A data storage unit is connected to the main control unit and the communication unit respectively, and the data storage unit is used to store the battery pack status information received by the communication unit.

[0013] Optionally, the data storage unit is a non-volatile flash memory.

[0014] Optionally, the first communication interface is a communication interface based on a half-duplex communication protocol.

[0015] Optionally, the second communication interface is a communication interface based on the Simple Network Management Protocol (SNMP).

[0016] Optionally, also include:

[0017] An operation indicator light connected to the main control unit, the operation indicator light is used to flash according to the working status signal transmitted by the main control unit.

[0018] Optionally, also include:

[0019] An alarm indicator light connected to the main control unit, the alarm indicator light is used to light up after receiving an alarm signal sent by the main control unit.

[0020] An embodiment of the present application further provides a battery management assembly, comprising the above-mentioned lithium-ion battery remote monitoring device and a battery pack.

[0021] The present application provides a remote monitoring device for lithium-ion batteries, which includes a main control unit and a communication unit, and the communication unit has a first communication interface and a second communication interface. The battery pack includes N groups of lithium-ion batteries (N≥2) connected in series, and the first communication interface of the communication unit is connected to the first group of lithium-ion batteries in the battery pack. The lithium-ion battery remote monitoring device sends a communication request and receives battery pack status information through the main control unit, and then uploads the battery pack status information to the client device through the second communication interface. Since the lithium-ion battery remote monitoring device communicates with the battery pack as an external device, it does not change the physical structure of the battery itself. Therefore, the present application can realize remote monitoring of lithium-ion batteries without changing the existing battery appearance design. The present application also provides a lithium-ion battery system, which has the same beneficial effects as the above-mentioned lithium-ion battery remote device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0023] Figure 1 A schematic diagram of the structure of a lithium-ion battery remote monitoring system provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the principle of a remote monitoring device for lithium-ion batteries provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the interface connection between a lithium-ion battery remote monitoring device and multiple groups of lithium-ion batteries provided in an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of a lithium-ion battery remote monitoring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The core of this application is to provide a lithium-ion battery remote monitoring device and a battery management component that can realize remote monitoring of lithium-ion batteries without changing the existing battery appearance design.

[0028] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] See below Figure 1 , Figure 1 This is a schematic diagram of the structure of a lithium-ion battery remote monitoring system provided in an embodiment of the present application.

[0030] The lithium-ion battery remote monitoring system includes a client device A, a lithium-ion battery remote monitoring device B, and a battery pack C. The client device A is connected to the lithium-ion battery remote monitoring device B via a network, and the lithium-ion battery remote monitoring device B is connected to the battery pack C via a communication interface. The battery pack C includes groups 1 to N of lithium-ion batteries connected in series, where N is greater than or equal to 2.

[0031] The above-mentioned lithium-ion battery remote monitoring device B includes a main control unit and a communication unit; the communication unit includes a first communication interface and a second communication interface, the first communication interface of the communication unit is connected to the first group of lithium-ion batteries in the battery pack, and the second communication interface of the communication unit is connected to the client device through the network.

[0032] In this embodiment, each group of lithium-ion batteries includes two communication interfaces. The first communication interface of the first group of lithium-ion batteries is connected to the first communication interface of the communication unit. The second communication interface of the first group of lithium-ion batteries is connected to the first communication interface of the second group of lithium-ion batteries. The second communication interface of the second group of lithium-ion batteries is connected to the first communication interface of the third group of lithium-ion batteries. N groups of lithium-ion batteries are cascaded; that is, the second communication interface of the i-1th group of lithium-ion batteries is connected to the first communication interface of the i-th group of lithium-ion batteries, where 1 < i ≤ N. In this embodiment, a group of lithium-ion batteries is a single lithium-ion battery, which includes a cell, an electrolyte, a housing, and a lithium battery group management system (also known as a lithium battery management system).

[0033] The main control unit is used to send a communication request to the first group of lithium-ion batteries through the first communication interface of the communication unit. The lithium battery pack management system of each group of lithium-ion batteries in the battery pack has the function of transmitting battery pack status information to the upper level, that is, the i-th group of lithium-ion batteries transmits its own battery pack status information and the received battery pack status information to the i-1-th group of lithium-ion batteries, such as the battery pack status information of the i-th to N-th groups of lithium-ion batteries. The above-mentioned operation of lithium-ion batteries transmitting battery pack status information to the upper level is an existing technology in the field. The battery pack status information is transmitted upward step by step, and the first group of lithium-ion batteries has the battery pack status information of all lithium-ion batteries in the battery pack. The battery pack status information includes voltage, current, temperature, state of charge, fault information, etc.

[0034] The communication unit is used to receive the battery pack status information returned by the first group of lithium-ion batteries through the first communication interface, and is also used to upload the battery pack status information to the client device through the second communication interface; wherein the battery pack status information includes the battery status information of N groups of lithium-ion batteries in the battery pack.

[0035] The lithium-ion battery remote monitoring device provided in this embodiment includes a main control unit and a communication unit, and the communication unit has a first communication interface and a second communication interface. The battery pack includes N groups of lithium-ion batteries (N≥2) connected in series, and the first communication interface of the communication unit is connected to the first group of lithium-ion batteries in the battery pack. The lithium-ion battery remote monitoring device sends a communication request and receives battery pack status information through the main control unit, and then uploads the battery pack status information to the client device through the second communication interface. Since the lithium-ion battery remote monitoring device communicates with the battery pack as an external device, it does not change the physical structure of the battery itself. Therefore, this embodiment can achieve remote monitoring of lithium-ion batteries without changing the existing battery appearance design.

[0036] As for Figure 1 As a further introduction to the corresponding embodiment, the above-mentioned lithium-ion battery remote monitoring device also includes a power supply unit connected to the main control unit and the communication unit respectively, and the power supply unit is used to provide power to the main control unit and the communication unit.

[0037] The power supply unit includes a power supply interface, which is used to connect to a DC power supply or the battery pack.

[0038] As for Figure 1 In a further description of the corresponding embodiment, the above-mentioned lithium-ion battery remote monitoring device further includes a data storage unit connected to the main control unit and the communication unit, respectively, and the data storage unit is used to store the battery pack status information received by the communication unit. The data storage unit may also be connected to the power supply unit.

[0039] The data storage unit is a non-volatile flash memory.

[0040] As for Figure 1 As further described in the corresponding embodiment, the first communication interface of the communication unit is a communication interface based on a half-duplex communication protocol (such as RS485).

[0041] As for Figure 1 As further described in the corresponding embodiment, the second communication interface is a communication interface based on the Simple Network Management Protocol (SNMP).

[0042] As for Figure 1 As a further introduction to the corresponding embodiment, the above-mentioned lithium-ion battery remote monitoring device also includes an operation indicator light connected to the main control unit, and the operation indicator light is used to flash according to the working status signal transmitted by the main control unit.

[0043] As for Figure 1As a further introduction to the corresponding embodiment, the above-mentioned lithium-ion battery remote monitoring device further includes an alarm indicator light connected to the main control unit, and the alarm indicator light is used to light up after receiving an alarm signal sent by the main control unit.

[0044] The present application also provides a battery management assembly comprising the aforementioned lithium-ion battery remote monitoring device and a battery pack. The battery management assembly can enable remote monitoring of lithium-ion batteries that do not have an Ethernet interface, thereby improving the operational management efficiency of lithium-ion batteries.

[0045] The above embodiment is described below by using a lithium-ion battery system and a remote monitoring device thereof in actual application.

[0046] The above-mentioned lithium-ion battery remote monitoring device includes:

[0047] The first communication interface provided in the remote monitoring device for lithium-ion batteries is connected to the battery pack for collecting battery pack status information; accordingly, the battery pack in the same communication site includes N groups of lithium-ion batteries, the first communication interface of the remote monitoring device for lithium-ion batteries is connected to the communication interface of the first group of lithium-ion batteries, and the other communication interface of the first group of lithium-ion batteries is connected to the communication interface of the second group of lithium-ion batteries. Similarly, the communication interfaces of the remaining lithium-ion batteries are connected in series.

[0048] The first communication interface of the above-mentioned lithium-ion battery remote monitoring device is specifically an RS485 communication interface, which is used to communicate with the battery using its own first communication interface during operation, so as to collect battery pack status information.

[0049] The lithium-ion battery remote monitoring device also includes a second communication interface for connecting to a client monitoring system via the second communication interface. If the client monitoring system is provided with a network interface supporting the Simple Network Management Protocol (SNMP), the second communication interface of the lithium-ion battery remote monitoring device is a network interface supporting the SNMP protocol.

[0050] The above-described embodiment provides a remote monitoring device for lithium-ion batteries, comprising a main control unit, a communication unit, a data storage unit, and a power supply unit. The main control unit of the monitoring device is primarily responsible for generating communication requests and sending them to a lithium battery pack management system (i.e., the lithium battery management system for each lithium-ion battery pack in the battery pack) via the first communication interface of the communication unit. This allows for real-time monitoring, collection, and data processing of voltage, current, temperature, state of charge, and fault information from the lithium battery pack management system. Furthermore, the second communication interface of the communication unit of the remote monitoring device can communicate with a client monitoring system via the Internet, uploading battery pack status information obtained by the remote monitoring device to the client monitoring system, thereby enabling uploading of battery pack status information to the client monitoring system via the Internet. The data storage unit can store data returned by the lithium battery pack management system according to specific rules for subsequent query and tracking. The power supply unit is connected to an external 48V power supply and can modulate the output of a stable voltage source according to the requirements of different components to power the monitoring device components. As can be seen, this embodiment uses the conversion of the lithium-ion battery remote monitoring device to upload lithium battery information to the client monitoring system via the Internet, thereby realizing remote and real-time monitoring of battery packs that do not have an Ethernet interface, thereby improving the operational efficiency of the battery system. The utility model also provides a lithium-ion battery system that has the same effect as the above-mentioned lithium-ion battery remote device.

[0051] See Figure 2 , Figure 2 A schematic diagram of the principle of a remote monitoring device for lithium-ion batteries provided in an embodiment of the present application. Figure 2 The figure shows a client monitoring system, the Internet, a lithium-ion battery remote monitoring device, and a lithium-ion battery pack management system for each group of lithium-ion batteries. The lithium-ion battery remote monitoring device includes a data storage unit, a communication unit, a main control unit, and a power supply unit. Because the N groups of lithium-ion batteries in the battery pack are connected in series, and the first communication interface is connected to the first group of lithium-ion batteries in the battery pack, this solution is equivalent to connecting the lithium-ion battery pack management system for each group of lithium-ion batteries to the lithium-ion battery remote monitoring device.

[0052] The lithium-ion battery remote monitoring device includes a main control unit, a communication unit, a data storage unit, and a power supply unit. The main control unit of the lithium-ion battery remote monitoring device is primarily responsible for generating communication requests and sending them to the lithium battery pack management system via the first communication interface of the communication unit. This communication request then enables real-time monitoring, collection, and data processing of the lithium battery pack management system's voltage, current, temperature, state of charge, and fault information. The RS485 communication interface provided on the lithium-ion battery remote monitoring device serves as the first communication interface and is used to connect to the lithium battery pack management system.

[0053] The lithium-ion batteries in the same communication site are divided into N groups of lithium-ion batteries. The first communication interface of the monitoring device is connected to the communication interface of the first group of lithium batteries, and another communication interface of the first group of lithium batteries is connected to the communication interface of the second group of lithium-ion batteries. Similarly, the communication interfaces of the remaining lithium-ion batteries are connected in series.

[0054] The second communication interface provided in the lithium-ion battery remote monitoring device is used to connect to the client monitoring system to upload battery data to the client controller system.

[0055] The client monitoring system is provided with a network interface supporting the Simple Network Management Protocol (SNMP), and the second communication interface is correspondingly a network interface supporting the SNMP protocol.

[0056] The lithium-ion battery remote monitoring device has a network interface and can upload information of battery packs that do not have a network interface to the monitoring system.

[0057] The client monitoring system is connected to the monitoring device via the Internet and can read instructions to retrieve corresponding data from the monitoring device; the client monitoring system completes data display, fault pre-alarm, alarm, and historical data report query and printing.

[0058] The lithium-ion battery remote monitoring device has a data storage unit for the data sent by the remote monitoring device main control unit, which is classified and stored in the memory. It can store and query the real-time data / status information or historical data / status information of the lithium battery pack.

[0059] The lithium-ion battery remote monitoring device collects lithium battery pack information, including but not limited to total battery pack voltage, total battery pack current, battery pack SOC, single cell voltage, battery module temperature, and battery pack fault status information. The device can analyze the received battery pack status information, provide early warning of battery pack failures, and issue a warning alert to the monitoring center server before a battery pack failure occurs, allowing staff to promptly maintain or repair the battery pack, thereby improving the operational efficiency of the battery system.

[0060] This embodiment further provides a lithium-ion battery system, including a client monitoring system and any one of the above-mentioned lithium-ion battery remote monitoring devices.

[0061] The lithium-ion battery management system collects and converts battery status information such as voltage, current, temperature, state of charge (SOC), and faults through the lithium-ion battery remote monitoring device. This information is then transmitted to the client monitoring system via a wireless network for display. This enables real-time display and alarms of abnormal battery data, notifying the central administrator to promptly perform maintenance or repairs on the lithium-ion battery pack to ensure normal operation. The remote monitoring device also features fault data backup and storage to prevent communication anomalies, allowing for data backup and storage for easy query and analysis.

[0062] Typically, a battery pack and a lithium-ion battery remote monitoring device are located at the same communication site. Considering the high cost of connecting each lithium-ion battery pack at the same communication site to a client monitoring system, this embodiment provides a second communication interface on the lithium-ion battery remote monitoring device to support communication with the monitoring system (it is understood that this second communication interface supports the same communication protocol as the second communication interfaces of other connected monitoring systems). This allows multiple lithium-ion battery monitoring devices to communicate with the same client monitoring system by interconnecting the monitoring systems of multiple lithium-ion batteries, thereby saving costs.

[0063] Specifically, this embodiment can group lithium-ion batteries in a single communication site. This means that a single client monitoring system can remotely monitor multiple lithium-ion batteries at the same site. Of course, this embodiment does not impose any specific restrictions on how lithium-ion batteries are grouped, and this can be determined based on actual circumstances.

[0064] As an optional embodiment, when the client monitoring system is provided with a network interface supporting the SNMP protocol and / or an RS485 communication interface, the second communication interface is correspondingly a network interface supporting the SNMP protocol and / or an RS485 communication interface.

[0065] Specifically, the communication protocol between the client monitoring system of the present application and the second communication interface of the lithium-ion battery remote monitoring device can adopt the SNMP (Simple Network Management Protocol) protocol. The SNMP protocol is an application layer protocol based on the UDP (User Datagram Protocol) / IP (Internet Protocol) protocol. The present application can use the GET / Response mode of any of the three versions of SNMP V1, V2, and V3 for communication. Accordingly, the client monitoring system is provided with a network interface (referred to as the network port) that supports the SNMP protocol, and the second communication interface on the monitoring device is correspondingly a network interface that supports the SNMP protocol.

[0066] The communication protocol between the lithium battery and the lithium-ion battery remote monitoring device of the present application can adopt Modbus RTU (Remote Terminal Unit) or TACP electrical general protocol. Modbus RTU or TACP electrical general protocol is a physical layer communication protocol based on RS485. This embodiment can use the Command / Response mode of Modbus RTU or TACP electrical general protocol itself for communication.

[0067] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the interface connection between a lithium-ion battery remote monitoring device and multiple groups of lithium-ion batteries provided by an embodiment of the present application. Within the same communication site, the client monitoring system and the lithium-ion battery remote monitoring device are connected via a network port that supports the SNMP protocol. The RS485 communication interface of the lithium-ion battery remote monitoring device is connected to the RS485 communication interface of the lithium battery. The battery management systems on each lithium-ion battery are also connected via RS485 communication interfaces. Figure 3 Among them, P1 is the first communication interface of the communication unit of the lithium-ion battery remote monitoring device, P2 is the second communication interface of the communication unit of the lithium-ion battery remote monitoring device, P3 is the first communication interface of the lithium-ion battery, and P4 is the second communication interface of the lithium-ion battery.

[0068] In order to make the lithium-ion battery remote monitoring device meet the scenarios provided by the above embodiments and to make the functions of the lithium-ion battery remote monitoring device more perfect, the present application provides a Figure 4 The lithium-ion battery remote monitoring device shown in the figure includes a power supply unit 410, a main control unit 420, a data storage unit 430 (such as a standard flash memory card), a communication unit 440, and a peripheral interface unit. The remote monitoring system includes a 48V positive power supply interface 411, a 48V negative power supply interface 412, a dry contact signal output 448, a reset button 447, an Ethernet interface 446, RS485 communication interfaces 445 / 444, a DIP switch 443, an operation indicator light 442, and an alarm indicator light 441.

[0069] The power supply unit is primarily used to power the various components of the lithium-ion battery remote monitoring device. Its input draws on the 48V DC power supply from the communication site, while its output modulates voltages to high-precision, stable voltages such as +5.0V, +3.3V, and +12V, depending on the requirements of the various onboard components. The main control unit is primarily responsible for generating communication requests and transmitting them to the monitoring device and lithium battery via the communication unit and peripheral interface unit. It also processes data returned by the external monitoring device and lithium battery for storage by the data storage unit. The data storage unit can store data returned by the lithium-ion battery remote monitoring device according to specific rules, making it available for subsequent querying and tracking. Therefore, both the main control module of the lithium-ion battery remote monitoring device and the main control unit of the client monitoring system can utilize an MCU (microcontroller unit) that supports multiple communication modes.

[0070] This embodiment can build a remote monitoring device as a connection link between the lithium battery and the external monitoring equipment without changing the existing battery appearance design, thereby realizing remote monitoring of the battery pack without an Ethernet interface.

[0071] Because the situation is complicated, it is impossible to list them one by one for explanation. Those skilled in the art should be aware that there can be many examples based on the basic principles provided by this application in combination with actual conditions, and all of them should be within the scope of protection of this application without sufficient creative work.

[0072] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to in detail.

[0073] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the solution and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A lithium-ion battery remote monitoring device, characterized in that: The system comprises a main control unit and a communication unit; the communication unit comprises a first communication interface and a second communication interface, the first communication interface is connected to a first group of lithium-ion batteries in a battery pack, and the second communication interface is connected to a client device via a network, the battery pack comprises N groups of lithium-ion batteries connected in series, where N is greater than or equal to 2; The main control unit is configured to send a communication request to the first group of lithium-ion batteries through the first communication interface of the communication unit; The communication unit is used to receive the battery pack status information returned by the first group of lithium-ion batteries through the first communication interface, and is also used to upload the battery pack status information to the client device through the second communication interface; wherein the battery pack status information includes the battery status information of N groups of lithium-ion batteries in the battery pack.

2. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: Also includes: A power supply unit is connected to the main control unit and the communication unit respectively, and is used to provide power to the main control unit and the communication unit.

3. The lithium-ion battery remote monitoring device according to claim 2, characterized in that: The power supply unit includes a power supply interface, and the power supply interface is used to connect to a DC power supply or the battery pack.

4. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: Also includes: A data storage unit is connected to the main control unit and the communication unit respectively, and the data storage unit is used to store the battery pack status information received by the communication unit.

5. The lithium-ion battery remote monitoring device according to claim 4, characterized in that: The data storage unit is a non-volatile flash memory.

6. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: The first communication interface is a communication interface based on a half-duplex communication protocol.

7. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: The second communication interface is a communication interface based on the Simple Network Management Protocol (SNMP).

8. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: Also includes: An operation indicator light connected to the main control unit, the operation indicator light is used to flash according to the working status signal transmitted by the main control unit.

9. The lithium-ion battery remote monitoring device according to claim 1, characterized in that: Also includes: An alarm indicator light connected to the main control unit, the alarm indicator light is used to light up after receiving an alarm signal sent by the main control unit.

10. A battery management component, characterized in that: The invention comprises a lithium-ion battery remote monitoring device and a battery pack as claimed in any one of claims 1 to 9.

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