Battery cell information storage system

Abstract

A battery cell information storage system comprises a plurality of receiving units, a plurality of access units, a battery management module and a control module. The plurality of receiving units are used for being arranged on a plurality of battery cells respectively. The plurality of access units respectively correspond to the plurality of receiving units. The battery management module is connected to the plurality of battery cells and is used for obtaining a plurality of pieces of battery information of the plurality of battery cells. The control module is connected to the battery management module and the plurality of access units, and is used for identifying first battery information in the plurality of pieces of battery information; and controlling a corresponding access unit in the plurality of access units to perform an access operation on a corresponding receiving unit in the plurality of receiving units according to the first battery information.

Description

Technical Field

[0001] The invention relates to a battery core information storage system. Background Art

[0002] A general battery management system (BMS) can measure and store the power of a battery module or the health information of the internal battery cells. However, when the battery module is disassembled, the battery management system will be unable to continue measuring the battery module due to power outages, so it is necessary to first understand the health status of each battery cell in the battery module before disassembly before replacing the internal battery cells.

[0003] In the process of replacing the battery cells, if confirmation is required, it may be necessary to additionally measure each battery cell, which increases the inconvenience of the process. Summary of the invention

[0004] In view of the above, the present invention provides a battery cell information storage system.

[0005] According to an embodiment of the present invention, a battery cell information storage system includes a plurality of receiving units, a plurality of access units, a battery management module, and a control module. The plurality of receiving units are used to be respectively set in a plurality of battery cells. The plurality of access units correspond to the plurality of receiving units respectively. The battery management module is connected to the plurality of battery cells and is used to obtain a plurality of battery information of the plurality of battery cells. The control module is connected to the battery management module and the plurality of access units and is used to identify a first battery information among the plurality of battery information and control a corresponding access unit among the plurality of access units to perform an access operation on the first battery information to a corresponding receiving unit of the plurality of receiving units.

[0006] Through the above structure, the battery cell information storage system disclosed by the present invention can store the battery information of each battery cell in the corresponding receiving unit by using the battery management module to obtain battery information (including battery power and battery health information) from each battery cell, and using the control module to control the access unit corresponding to each battery cell to access the receiving unit of each battery cell. In this way, even if the battery management module has stopped measuring the battery information during the replacement of the battery cell, the user can still use an external access device (such as a mobile phone) to read the receiving unit of each battery cell to obtain the battery information of each battery cell. The battery cell information storage system of the present invention will facilitate the replacement of a specific battery cell without the need to re-measure the battery information of the battery cell.

[0007] The above description of the content of the present invention and the following description of the implementation modes are used to demonstrate and explain the spirit and principle of the present invention, and to provide further explanation for the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The figure is a functional block diagram of a battery cell information storage system according to an embodiment of the present invention.

[0009] Figure 2 The present invention is based on an embodiment of the present invention to illustrate the application flow chart of the battery cell information storage system.

[0010] Figure 3 The figure is a three-dimensional diagram of a battery cell of a battery cell information storage system according to an embodiment of the present invention.

[0011] Figure 4A The figure is a three-dimensional schematic diagram of an energy storage cabinet including a plurality of battery cells of a battery cell information storage system according to an embodiment of the present invention.

[0012] Figure 4B Based on Figure 4A A partial enlarged view of the marked area A of the embodiment.

[0013] Figure 5 Based on Figure 4B A schematic cross-sectional view of the embodiment taken along the section line LL'.

[0014] Figure 6 The figure is a functional block diagram of a battery cell information storage system according to another embodiment of the present invention.

[0015] [Description of Reference Numerals]

[0016] 1: Battery cell information storage system

[0017] 11,11-1,11-2,11-3: Receiving unit

[0018] 12,12-1-,12-2,12-3: Access unit

[0019] 13: Battery management module

[0020] 14: Control module

[0021] B1, B2, B3: Battery cells

[0022] S1, S3, S5: Steps

[0023] C: Metal housing

[0024] P: Positive electrode

[0025] N: Negative electrode

[0026] S: Energy storage cabinet

[0027] A: Marking area

[0028] L-L': Transverse line

[0029] d: distance

[0030] H: Explosion-proof hole DETAILED DESCRIPTION

[0031] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable ordinary technicians in the field to understand the technical content of the present invention and implement it accordingly. According to the contents, protection scope and drawings disclosed in this specification, ordinary technicians in the field can easily understand the relevant purposes and advantages of the present invention. The following examples are to further illustrate the viewpoints of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0032] Please refer to Figure 1 , Figure 1 FIG. 1 is a functional block diagram of a battery cell information storage system according to an embodiment of the present invention. Figure 1 As shown, the battery cell information storage system 1 includes a plurality of receiving units 11-1, 11-2 and 11-3, a plurality of access units 12-1, 12-2 and 12-3, a battery management module 13 and a control module 14. The plurality of receiving units 11-1, 11-2 and 11-3 are used to be respectively set in the plurality of battery cells B1, B2 and B3. The plurality of access units 12-1, 12-2 and 12-3 correspond to the plurality of receiving units 11-1, 11-2 and 11-3 respectively. The battery management module 13 is connected to the plurality of battery cells B1, B2 and B3, and is used to obtain a plurality of battery information of the plurality of battery cells B1, B2 and B3. The control module 14 is connected to the battery management module 13 and multiple access units 12-1, 12-2 and 12-3, and is used to identify a first battery information among the multiple battery information, and control a corresponding access unit among the multiple access units 12-1, 12-2 and 12-3 to perform an access operation on the first battery information to a corresponding receiving unit of the multiple receiving units 11-1, 11-2 and 11-3.

[0033] In this example, the number of battery cells, receiving units and access units is three, but the present invention is not limited thereto, that is, the battery management module 13 can be connected to multiple battery cells and obtain multiple battery information, and transmit the battery information to the control module 14. The control module 14 can be connected to the access units corresponding to the multiple battery cells, and control the access units to access the corresponding battery information to the corresponding receiving units. The receiving units 11-1, 11-2 and 11-3, the access units 12-1, 12-2 and 12-3 and the control module 14 can be based on a wireless communication identification technology (radio frequency identification, RFID). For example, the receiving units 11-1, 11-2 and 11-3 can be wireless radio frequency identification tags (RFID tags), the access units 12-1, 12-2 and 12-3 can be wireless radio frequency identification readers (RFID readers), and the control module 14 can be a high frequency wireless communication identification module (HF RFID module). The so-called high frequency (HF) here refers to the transmission signal of 13.56MHz. Compared with the low frequency (LF) ranging from 125 to 134kHz and the ultra-high frequency (UHF) ranging from 856 to 960MHz, it is more suitable for read and write operations of data transmission at short distances (such as several centimeters to tens of centimeters).

[0034] In this example, the battery management module 13 may have a measuring unit and a control unit, wherein the measuring unit is used to measure various information of the battery cell, such as voltage, current, temperature, state of charge (SoC), depth of discharge (DoD), state of health (SoH), state of power (SoP), state of safety (SoS), limit charge current (CCL), limit discharge current (DCL), remaining power (ampere-hour), remaining energy (kilowatt-hour), degraded capacity, abnormal information, etc. Further, the control unit of the battery management module 13 may obtain an identification information of the above-mentioned battery cell to distinguish the battery information of each battery cell, wherein the identification information may be included in the battery information. The control module 14 may include a microcontroller and a plurality of circuit switching elements (switches), wherein the circuit switching elements are correspondingly connected to the access units, so that when the control module 14 receives the battery information of a specific battery cell (such as battery cell B1) from the battery management module 13, the microcontroller may conduct the specific circuit switching element according to the battery information (or identification information) to write the battery information into the receiving unit 11-1 through the access unit 12-1. The circuit switching element may be a transistor, and the control of the circuit switching element by the microcontroller may change the conduction state of the transistor by changing the magnitude of the gate voltage applied to the transistor, which is not described in detail here.

[0035] In this way, even if the battery management module 13 is disconnected from the battery cell and cannot measure the battery information in real time, the previously measured battery information has been written into the receiving unit of each battery cell. Therefore, it is only necessary to read the receiving unit to obtain the stored battery information. Figure 2 , Figure 2 FIG. 1 is an application flow chart of a battery cell information storage system according to an embodiment of the present invention. Figure 2 As shown, the battery cell information storage system can be operated in the following steps, including: step S1: using the battery management module to obtain the battery information of multiple battery cells and transmit the battery information to the control module; step S3: using the control module to control the access units according to the battery information to write the battery information into the receiving unit; and step S5: using an external access device to access the information of a corresponding battery cell from one of the receiving units. Figure 1After the battery information is written into the receiving unit, the user can use an external access device, such as a mobile device equipped with a radio frequency identification reader that is the same as or similar to the access unit, to read the battery information in the receiving unit to understand the battery status of each battery cell.

[0036] It should be noted that the battery cell information storage system of the present invention can be applied in other ways. Figure 1 For example, based on the fact that the access units 12-1, 12-2 and 12-3 can be used to perform data writing and data reading operations, the control module 14 can control the access units 12-1, 12-2 and 12-3 to read data from the receiving units 11-1, 11-2 and 11-3, and then transmit the collected battery information to other devices or servers, so that users or manufacturers can obtain battery information of multiple battery cells B1, B2 and B3. In addition, in other embodiments, the access units 12-1, 12-2 and 12-3 and the receiving units 11-1, 11-2 and 11-3 can be based on a near-field communication (NFC) technology, and under the framework of the NFC technology, the NFC unit can simultaneously have the functions of receiving, writing and reading data, so the access units 12-1, 12-2 and 12-3 and the receiving units 11-1, 11-2 and 11-3 can also belong to the same type of communication unit.

[0037] Please refer to Figure 3 , Figure 3 1 is a three-dimensional diagram of a battery cell of a battery cell information storage system according to an embodiment of the present invention. Each of the receiving units 11 of the battery cell information storage system of this example is arranged corresponding to an explosion-proof hole on a metal shell of each of the battery cells. The material of the metal shell can be aluminum or other metals, and the present invention is not limited thereto. Figure 3 As shown, a battery cell B1 has a metal shell C, a positive electrode P and a negative electrode N, and the battery cell B1 is provided with a receiving unit 11 (outside the dotted line) and an explosion-proof valve (inside the dotted line) at the position of the explosion-proof hole H of the metal shell C, wherein the receiving unit 11 is arranged at the periphery of the explosion-proof valve. For safety reasons, the metal shell C does not hermetically cover the entire battery cell, but leaves an explosion-proof hole H to allow the space where the battery cell is located to communicate with the external space, so that the internal gas of the battery cell can be discharged. The present invention sets the receiving unit 11 at a position corresponding to the explosion-proof hole H, so that the receiving unit 11 can be exposed from the metal shell C.

[0038] In this example, the metal shell C may be provided with a cover member directly above the explosion-proof hole H, wherein the cover member has a first hollow structure in the center, so that the first hollow structure corresponds to the explosion-proof hole H, that is, the first hollow structure may overlap with the explosion-proof hole H in the vertical projection direction. Each of the multiple receiving units 11 is configured to correspond to the peripheral area of ​​the explosion-proof hole H on the battery core, that is, the first hollow structure, the explosion-proof hole H and the receiving unit 11 may overlap with each other in the vertical projection direction, so that the ring antenna of the receiving unit 11 may be exposed to the outside through the explosion-proof hole H and the first hollow structure for inductive reading without being affected by the shielding effect of the metal shell. In addition, the shape of the antenna of the receiving unit 11 may change with the shape of the explosion-proof hole H, and the present invention does not limit the shape of the antenna of the receiving unit 11. Please refer to Figure 3 refer to Figure 4A , Figure 4A FIG. 1 is a three-dimensional schematic diagram of an energy storage cabinet including multiple battery cells of a battery cell information storage system according to an embodiment of the present invention. Figure 4A As shown, the above-mentioned multiple battery cells can be arranged in an energy storage cabinet S. The energy storage cabinet S can be divided into four compartments by a metal shell, for example, wherein each compartment contains a battery cell and Figure 3 The corresponding structure shown in FIG. 1 will focus on describing the three-dimensional structural relationship of the marking area A below.

[0039] Please refer to Figure 4B , Figure 4B Based on Figure 4A A partial enlarged view of the marking area A of the embodiment. Figure 4B As shown, one battery cell may correspond to one receiving unit 11 and an access unit 12 disposed above the receiving unit 11, wherein the receiving unit 11 and the access unit 12 may overlap each other in the vertical projection direction. Figure 1 The electrical connection relationship of the embodiment is not described here. Figure 4B It can be seen that even if the battery core is covered by a metal shell, the antenna of the access unit 12 can still pass through the explosion-proof hole to read the coil of the receiving unit 11, or perform the above-mentioned write operation on the receiving unit 11. In this example, the access unit 12 can be supported by one or more support columns or a bracket to be arranged above the receiving unit 11, or can be suspended above the receiving unit 11 in other ways, and the present invention does not limit the fixing parts. In this example, the receiving unit 11 and the access unit 12 can overlap each other in the vertical projection direction, so that the access unit 12 can pass through the explosion-proof hole to access or write to the receiving unit 11, wherein the vertical projection direction is shown as the height direction of the energy storage cabinet. The description of the fasteners or fastening components between the various components or members is omitted or simplified here, and this article is intended to provide a possible implementation mode rather than additional structural restrictions.

[0040] Please refer to Figure 5 , Figure 5 Based on Figure 4B A schematic cross-sectional view of the embodiment taken along the section line L-L'. Figure 5 As shown, continuing with the structure above, based on the suspended structure of the support column or bracket, there can be a vertical distance d between the access unit 12 and the receiving unit 11, wherein the range of this distance d can be determined based on the communication range of the wireless radio frequency identification (RFID) or near field communication (NFC), for example, ranging from several centimeters to tens of centimeters. Through this structure, the antenna of the access unit 12 can directly pass through the explosion-proof hole and the first hollow structure of the cover to access or read and write operations on the antenna of the receiving unit. This distance d also helps the gas to escape when the internal pressure of the battery core is too high, that is, the internal gas of the battery core can escape through the explosion-proof hole and the first hollow structure, and circulate with the surrounding air through this distance d. In addition, when the access unit 12 is disassembled or removed, the user can also directly use an external access device to read the battery information of the receiving unit 11 of each battery core. In addition, in other embodiments, the central area of ​​the access unit 12 can additionally have a second hollow structure, wherein the second hollow structure overlaps with the first hollow structure, the explosion-proof hole and the receiving unit 11 in the vertical projection direction. In this way, the internal gas of the battery core of this embodiment can flow out through the explosion-proof hole, the first hollow structure and the second hollow structure.

[0041] Please refer to Figure 6 , Figure 6 FIG. 1 is a functional block diagram of a battery cell information storage system according to another embodiment of the present invention. Figure 6 As shown, the battery cell information storage system 1' of this example includes Figure 1 In addition to the receiving units 11-1, 11-2 and 11-3, the access units 12-1, 12-2 and 12-3, the battery management module 13 and the control module 14 shown in the embodiment, a cloud server 15 is further included, which is communicatively connected to the battery management module 13 and the control module 14, and is used to receive the battery information of the battery cells B1, B2 and B3 from the battery management module 13, and transmit the battery information to the control module 14. In this example, the battery management module 13 may have a communication unit for transmitting the battery information to the cloud server 15 (such as a remote host). The control module 14 can download the battery information from the cloud server 15, and then write it into the receiving units 11-1, 11-2 and 11-3 through the access units 12-1, 12-2 and 12-3. In addition, in another embodiment, the control module 14 can also read the battery information in the receiving units 11-1, 11-2 and 11-3 through the access units 12-1, 12-2 and 12-3, and then upload it to the cloud server 15, so that users or manufacturers can obtain the battery information or monitor it in real time.

[0042] Through the above structure, the battery cell information storage system disclosed in the present invention can store the battery information of each battery cell in the corresponding receiving unit by using the battery management module to obtain battery information (including battery power and battery health information) from each battery cell, and using the control module to control the access unit corresponding to each battery cell to access the receiving unit of each battery cell. In this way, even if the battery management module has stopped obtaining battery information during the replacement of the battery cell, the user can still use an external access device (such as a mobile phone) to read the receiving unit of each battery cell to obtain the battery information of each battery cell. Alternatively, the control module can also read the battery information in the receiving unit of the battery cell through the access unit, and then upload it to the cloud server or other devices for monitoring. The battery cell information storage system of the present invention will be conducive to the replacement of a specific battery cell without the need to re-measure the battery information of the battery cell.

Claims

1. A battery cell information storage system, suitable for multiple battery cells, characterized in that: Include: A plurality of receiving units, used to be respectively disposed on the plurality of battery cells; A plurality of access units, corresponding to the plurality of receiving units respectively; a battery management module connected to the plurality of battery cells and used to obtain a plurality of battery information of the plurality of battery cells; as well as A control module is connected to the battery management module and the plurality of access units, and is used for identifying a first battery information among the plurality of battery information, and controlling a corresponding access unit among the plurality of access units to perform an access operation on the first battery information to a corresponding receiving unit among the plurality of receiving units.

2. The battery cell information storage system as claimed in claim 1, characterized in that: The plurality of receiving units, the plurality of access units and the control module are based on a wireless communication identification technology.

3. The battery cell information storage system as claimed in claim 1, characterized in that: The control module includes a microcontroller and a plurality of circuit switching elements, and the plurality of circuit switching elements are correspondingly connected to the plurality of access units.

4. The battery cell information storage system as claimed in claim 1, characterized in that: The plurality of receiving units and the plurality of access units are based on a near field communication technology.

5. The battery cell information storage system as claimed in claim 1, characterized in that: The control module is used for controlling the corresponding access unit among the plurality of access units to write the first battery information into the corresponding receiving unit among the plurality of receiving units.

6. The battery cell information storage system as claimed in claim 1, characterized in that: Each of the plurality of receiving units is disposed corresponding to an explosion-proof hole on a metal shell of each of the plurality of battery cells.

7. The battery cell information storage system as claimed in claim 6, characterized in that: Each of the plurality of receiving units is arranged to correspond to the periphery of the explosion-proof hole, and there is a spacing distance between the plurality of access units and the plurality of receiving units.

8. The battery cell information storage system as claimed in claim 6, characterized in that: Each of the plurality of access units has a hollow structure at a position corresponding to the explosion-proof hole.

9. The battery cell information storage system as claimed in claim 1, wherein: The plurality of battery cores are arranged in an energy storage cabinet.

10. The battery cell information storage system as claimed in claim 1, wherein: Also includes: A cloud server is communicatively connected to the battery management module and the control module, and is used for receiving the battery information from the battery management module and transmitting the battery information to the control module.

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