A battery management monitoring acquisition unit and system

Abstract

The present invention provides a battery management monitoring acquisition unit, which is arranged corresponding to a battery pack. The battery management monitoring acquisition unit includes a battery management monitoring acquisition module and an optical fiber temperature sensor connected to the battery management monitoring acquisition module. Each temperature measuring grating of the optical fiber temperature sensor is connected to each battery of the battery pack. The optical fiber temperature sensor includes a first input end and a second output end connected to the first input end. The first input end is connected to the battery management monitoring acquisition module to convert the electrical signal communication data of the battery management monitoring acquisition module into optical signal communication data, and the second output end is connected to the battery management monitoring acquisition unit of the next battery pack to output the optical signal communication data. The present invention also provides a battery management monitoring acquisition system. In the present invention, the optical fiber temperature sensor is not only used to collect battery temperature, but also serves as a communication tool to transmit temperature data to the next battery management monitoring acquisition unit.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber temperature sensors, and in particular relates to a battery temperature management monitoring and acquisition unit and system. Background Art

[0002] The fiber optic temperature sensor is a sensing device that uses the principle that the spectrum absorbed by some substances changes with temperature. It analyzes the spectrum transmitted by the optical fiber to understand the real-time temperature. The main materials are optical fiber, spectrum analyzer, transparent crystal, etc. It is divided into distributed and fiber optic fluorescence temperature sensors.

[0003] When optical fiber temperature sensors are used to collect temperature, they are only used as temperature sensors instead of for communication. The temperature data measured by the optical fiber temperature sensors needs to be transmitted to the next transmission node by a communication method or device that transmits electrical signals. That is, only the temperature measurement function of the optical fiber temperature sensor is used, while its communication function is ignored, which limits the utilization of the optical fiber temperature sensor. At the same time, the additional communication method also increases the communication cost.

[0004] Moreover, since the above-mentioned transmission nodes use traditional electrical signals for communication, resulting in an electrical connection between the two transmission nodes, the communication anti-interference ability of the transmission nodes will be poor, and the electrical signal communication speed is slow, generally less than 1Mb / S, affecting the data transmission between different transmission nodes. Summary of the invention

[0005] The embodiment of the present invention provides a battery management monitoring acquisition unit, which aims to solve the technical problem that the communication function of the optical fiber temperature sensor is not effectively utilized in the prior art, and communication is performed through another communication method, resulting in increased communication costs and poor communication effects.

[0006] The embodiment of the present invention is implemented as follows: a battery management monitoring collection unit, the battery management monitoring collection unit is set corresponding to the battery pack, and the battery management monitoring collection unit includes:

[0007] Battery management monitoring and acquisition module; and

[0008] An optical fiber temperature sensor connected to the battery management monitoring and acquisition module, each temperature measuring grating of the optical fiber temperature sensor is connected to each battery of the battery pack, and the optical fiber temperature sensor includes a first input end and a second output end connected to the first input end;

[0009] The first input end is connected to the battery management monitoring acquisition module to convert the electrical signal communication data of the battery management monitoring acquisition module into optical signal communication data, and the second output end is connected to the battery management monitoring acquisition unit of the next battery pack to output optical signal communication data.

[0010] Furthermore, the battery management monitoring and acquisition unit includes a temperature information acquisition module, which is connected to the first input end. The temperature information acquisition module is used to convert the electrical signal communication data obtained from the battery management monitoring and acquisition module into optical signal communication data, and transmit it to the next battery management monitoring and acquisition unit through the optical fiber temperature sensor.

[0011] Furthermore, the temperature information acquisition module is also used to receive the optical signal communication data reflected from the temperature measuring grating, and obtain the temperature data of each battery according to the optical signal communication data analysis and output it as electrical signal communication data.

[0012] Furthermore, the battery management monitoring and acquisition unit also includes a photoelectric conversion module connected to the temperature information acquisition module, and the photoelectric conversion module is also connected to the second output end of the optical fiber temperature sensor of the battery management monitoring and acquisition unit of the previous battery group to convert the optical signal into an electrical signal and transmit it to the current battery management monitoring and acquisition unit.

[0013] Furthermore, the battery management monitoring acquisition unit also includes a control module disposed between the photoelectric conversion module and the temperature information acquisition module, and the control module is used to receive temperature data from the photoelectric conversion module and transmit it to the temperature information acquisition module.

[0014] The present invention also provides a battery management monitoring and acquisition system, which includes:

[0015] A plurality of the battery management monitoring and acquisition units described above are arranged in a specific order.

[0016] The beneficial effect of the embodiment of the present invention is that since the optical fiber temperature sensor in the battery management monitoring and acquisition unit is used to collect battery temperature and also serves as a communication tool to transmit temperature data to the next battery management monitoring and acquisition unit, there is no need to set up a traditional electrical communication method, which reduces communication costs and is no longer limited by the electrical transmission method of traditional communication lines. The optical fiber communication of the optical fiber temperature sensor will not be interfered by electrical signals, and the communication speed exceeds the communication speed of traditional electrical signals, with high real-time performance, effectively giving play to the characteristics of high-speed data transmission and high bandwidth of the optical fiber temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a battery management monitoring and acquisition unit in the prior art;

[0018] Figure 2 A schematic diagram of the structure of a battery management monitoring and acquisition unit according to an embodiment of the present invention;

[0019] Figure 3 The figure is a schematic diagram of the structure of a battery management monitoring and acquisition system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1 In the prior art, when the optical fiber temperature sensor is used to collect temperature, it is only used as a temperature sensor and not for communication. The temperature data measured by the optical fiber temperature sensor needs to be transmitted to the next transmission node by a communication method or device that transmits electrical signals. That is, only the temperature measurement function of the optical fiber temperature sensor is used, while its communication function is ignored, and the utilization of the optical fiber temperature sensor is limited. At the same time, the communication method set up separately also increases the communication cost.

[0022] Moreover, since the above-mentioned transmission nodes use traditional electrical signals for communication, resulting in an electrical connection between the two transmission nodes, the communication anti-interference ability of the transmission nodes will be poor, and the electrical signal communication speed is slow, generally less than 1Mb / S, affecting the data transmission between different transmission nodes.

[0023] In the present invention, the optical fiber temperature sensor is used as a communication line while measuring temperature, which not only utilizes the function of the optical fiber temperature sensor for measuring temperature, but also utilizes its optical fiber communication function, effectively giving play to the characteristics of high-speed data transmission and high bandwidth of the optical fiber temperature sensor.

[0024] Embodiment 1

[0025] See also Figure 2 and Figure 3The battery management monitoring acquisition unit 10 of the embodiment of the present invention is set corresponding to the battery pack, which includes a battery management monitoring acquisition module 11 and an optical fiber temperature sensor 12 connected to the battery management monitoring acquisition module 11. Each temperature measuring grating 121 of the optical fiber temperature sensor 12 is connected to each battery of the battery pack. The optical fiber temperature sensor 12 includes a first input end 122 and a second output end 123 that is separated from and connected to the first input end 122. The first input end 122 is connected to the battery management monitoring acquisition module 11 to convert the electrical signal communication data of the battery management monitoring acquisition module 11 into optical signal communication data. The second output end 123 is connected to the battery management monitoring acquisition unit 10 of the next battery pack to output the optical signal communication data.

[0026] In the battery management monitoring and acquisition unit 10 of the embodiment of the present invention, the optical fiber temperature sensor 12 is used to collect the real-time temperature data of the battery pack, and also serves as a communication tool to transmit the real-time temperature data to the next battery management monitoring and acquisition unit 10. Therefore, there is no need to set up a traditional electrical communication method, which reduces the communication cost and is no longer limited by the electrical transmission method of the traditional communication line. The optical fiber communication of the optical fiber temperature sensor 12 will not be interfered by the electrical signal, and the communication speed exceeds the communication speed of the traditional electrical signal, which can reach more than 100MB / s, with high real-time performance, effectively giving play to the characteristics of high-speed data transmission and high bandwidth of the optical fiber temperature sensor 12.

[0027] Specifically, the optical fiber temperature sensor 12 includes an optical fiber, one end of which is connected to the battery management monitoring acquisition module 11 of the battery management monitoring acquisition unit 10 (the current battery management monitoring acquisition unit 10) where the optical fiber temperature sensor 12 itself is located, and is used to receive the real-time temperature data of the battery group corresponding to it collected by the current battery management monitoring acquisition unit 10, or receive the real-time temperature data of the battery group corresponding to it transmitted by the previous battery management monitoring acquisition unit 10. The above-mentioned "one end" is the first input end 122, that is, the input of the real-time temperature data is received. At this time, the real-time temperature data is the above-mentioned electrical signal communication data; the other end of the optical fiber is connected to the battery management monitoring acquisition module 11 of the next battery management monitoring acquisition unit 10, and the above-mentioned "other end" is the second output end 123, that is, the real-time temperature data collected by the current battery management monitoring acquisition unit 10 is output to the next battery management monitoring acquisition unit 10. At this time, the real-time temperature data is the above-mentioned optical signal communication data.

[0028] In one embodiment, the number of the battery management monitoring collection unit 10 can be one or more. When there is only one battery management monitoring collection unit 10, it is only corresponding to one battery group to collect real-time temperature data. At this time, the optical fiber temperature sensor 12 can reflect the real-time temperature data as an optical signal, and transmit it to the corresponding external device or equipment through the second output end 123, that is, the second output end 123 is connected to the external device or equipment to achieve effective transmission.

[0029] When there are multiple battery management monitoring and acquisition units 10, one battery management monitoring and acquisition unit 10 corresponds to one battery pack, and multiple battery management monitoring and acquisition units 10 can be used to manage, monitor and acquire real-time temperature data of a battery system, which is composed of multiple battery packs. That is, multiple battery management monitoring and acquisition units 10 can acquire real-time temperature data of multiple battery packs and transmit them, such as from the current battery management monitoring and acquisition unit 10 to the next battery management monitoring and acquisition unit 10, and then from the battery management monitoring and acquisition unit 10 to the battery management monitoring and acquisition unit 10, and so on.

[0030] At the same time, the current battery management monitoring acquisition unit 10 also receives the real-time temperature of the battery group corresponding to it transmitted by the previous battery management monitoring acquisition unit 10. In the actual communication process of multiple battery management monitoring acquisition units 10, the current battery management monitoring acquisition unit 10 transmits the real-time temperature data transmitted by the previous battery management monitoring acquisition unit 10 together with the real-time temperature data collected by itself to the next battery management monitoring acquisition unit 10, thereby realizing the "daisy chain" communication of the battery system composed of multiple battery groups, and ensuring the immediacy and effectiveness of data transmission.

[0031] It can be understood that if the current battery management monitoring and acquisition unit 10 is ranked first among multiple battery management monitoring and acquisition units 10, the current battery management monitoring and acquisition unit 10 only collects the real-time temperature data of the battery group corresponding to itself and transmits it to the next battery management monitoring and acquisition unit 10, and does not receive the real-time temperature data transmitted by the previous battery management monitoring and acquisition unit 10.

[0032] In one embodiment, the optical fiber temperature sensor 12 is an optical fiber Bragg grating temperature sensor 12. The optical fiber Bragg grating temperature sensor 12 has heat conduction characteristics and high strength characteristics, and has the advantages of compact structure, small size, convenient layout, anti-electromagnetic interference, high precision, good durability, and can be surface-mounted or arranged inside the device, and can be effectively used for measuring battery temperature and communication.

[0033] For further information, please refer to Figure 2The battery management monitoring acquisition unit 10 includes a temperature information acquisition module 13, which is connected to the first input terminal 122. The temperature information acquisition module 13 is used to convert the electrical signal communication data obtained from the battery management monitoring acquisition unit 10 into optical signal communication data, and transmit it to the next battery management monitoring acquisition unit 10 through the optical fiber temperature sensor 12.

[0034] Specifically, the above-mentioned electrical signal communication data is the data of the current battery management monitoring acquisition unit 10 itself, which is temporarily stored in the battery management monitoring acquisition module 11, and can be directly transmitted to the temperature information acquisition module 13. The temperature information acquisition module 13 is connected to the first input end 122 of the optical fiber temperature sensor 12, that is, the communication data in the form of electrical signals is converted into communication data in the form of optical signals, so that the first input end 122 can receive it accordingly, and then output it to the next battery management monitoring acquisition unit 10 through the second output end 123 of the optical fiber temperature sensor 12, so as to realize the chain transmission of data.

[0035] Furthermore, in the embodiment of the present invention, the temperature information acquisition module 13 is also used to receive the optical signal communication data reflected by the temperature measuring grating 121 of the optical fiber temperature sensor 12, and obtain the temperature data of each battery according to the optical signal communication data analysis and output it as electrical signal communication data.

[0036] It can be understood that the real-time temperature data of the battery pack is obtained by reflecting the temperature measuring grating 121. At this time, the real-time temperature data is actually communication data in the form of optical signals when it is reflected by the temperature measuring grating 121. When the communication data in the form of optical signals is reflected to the temperature information acquisition module 13, it is received by the temperature information acquisition module 13 and converted into electrical signal communication data. When it needs to be transmitted to the next battery management monitoring and acquisition unit 10, the electrical signal communication data is converted into optical signal communication data and transmitted to the first output end 123 of the optical fiber temperature sensor 12 to realize subsequent optical fiber communication.

[0037] Furthermore, in an embodiment of the present invention, the battery management monitoring and acquisition unit 10 also includes a photoelectric conversion module 14 connected to the temperature information acquisition module 13, and the photoelectric conversion module 14 is also connected to the second output end 123 of the optical fiber temperature sensor 12 of the battery management monitoring and acquisition unit 10 of the previous battery group to convert the optical signal into an electrical signal and transmit it to the current battery management monitoring and acquisition unit 10.

[0038] It can be understood that the optical signal communication data cannot be received and converted by other components. Therefore, a photoelectric conversion module 14 is set in the battery management monitoring and acquisition unit 10 to convert the optical signal communication data transmitted from the battery management monitoring and acquisition unit 10 of the previous battery group into electrical signal communication data, so that subsequent transmission can be completed in the current battery management monitoring and acquisition unit 10 to ensure the normal transmission of communication data.

[0039] In one embodiment, the photoelectric conversion module 14 may use a photoelectric conversion chip of model DM9331A.

[0040] Furthermore, in the embodiment of the present invention, the battery management monitoring acquisition unit 10 also includes a control module 15 disposed between the photoelectric conversion module 14 and the temperature information acquisition module 13 , and the control module 15 is used to receive temperature data from the photoelectric conversion module 14 and transmit it to the temperature information acquisition module 13 .

[0041] Specifically, the above-mentioned control module 15 can be understood as a CPU, which plays the role of acquiring and transmitting data in the battery management monitoring and acquisition unit 10. For example, the control module 15 can receive temperature data from the photoelectric conversion module 14 and transmit it to the temperature information acquisition module 13, and can also obtain relevant data from the battery management monitoring and acquisition module 11 and transmit it to the temperature information acquisition module 13, so as to realize accurate and orderly transmission of various data.

[0042] In one embodiment, the battery management monitoring and acquisition module 11 is a circuit board with relevant functional circuits engraved thereon, on which the above-mentioned photoelectric conversion module 14, control module 15 and temperature information acquisition module 13 are arranged. The battery management monitoring and acquisition module 11 not only transmits communication data, but also installs and carries the above-mentioned components.

[0043] Embodiment 2

[0044] See also Figure 2 and Figure 3 The present invention also provides a battery management monitoring and acquisition system 100, which includes a plurality of the above-mentioned battery management monitoring and acquisition units 10, and the plurality of battery management monitoring and acquisition units 10 are arranged in a specific order.

[0045] In the battery management monitoring and acquisition system 10 of the embodiment of the present invention, the optical fiber temperature sensor 12 in the battery management monitoring and acquisition unit 10 is used to collect battery temperature and also serves as a communication tool to transmit temperature data to the next battery management monitoring and acquisition unit 10. Therefore, there is no need to set up a traditional electrical communication method, which reduces the communication cost and is no longer limited by the electrical transmission method of the traditional communication line. The optical fiber communication of the optical fiber temperature sensor 12 will not be interfered by electrical signals, and the communication speed exceeds the communication speed of traditional electrical signals, which can reach more than 100MB / s, with high real-time performance, effectively giving play to the characteristics of high-speed data transmission and high bandwidth of the optical fiber temperature sensor 12.

[0046] Specifically, the optical fiber of the optical fiber temperature sensor 12 is used as both the temperature sensor 12 and the communication line of the optical fiber communication. Each temperature measuring grating 121 of the optical fiber temperature sensor 12 is placed on each battery to measure the temperature of the battery. Then, the two ends of the optical fiber temperature sensor 12 are respectively connected to two battery management acquisition modules (battery management acquisition circuit board), one end of which is connected to the optical fiber temperature information acquisition module 13 circuit of the battery management acquisition unit 10 of this group of batteries to input the optical fiber signal, and the other end is connected to the photoelectric conversion module 14 of the battery management acquisition circuit board of the next group of batteries to convert the optical signal into an electrical signal and input it into the control module 15 (CPU).

[0047] Please further combine Figure 2 and Figure 3 Exemplarily, a plurality of battery management monitoring and acquisition units 10 are arranged in sequence to form a battery management monitoring and acquisition system 100. The optical fiber signal is reflected by the temperature measuring grating on the optical fiber temperature sensor N on the battery to the temperature information acquisition module N to obtain temperature data. The control module N acquires the temperature data. The control module N converts the data on the battery management monitoring and acquisition module N into electrical signal communication data and sends it to the temperature information acquisition module N.

[0048] Then, the temperature information acquisition module N converts the above-mentioned electrical signal communication data into optical signal communication data, and sends it to the battery management monitoring acquisition module N+1 via the optical fiber temperature sensor N. The optical signal communication data is converted into electrical signal communication data by the photoelectric conversion module N+1 on the battery management monitoring acquisition module N+1, and transmitted to the control module N+1, thereby realizing the communication of communication data from the control module N to the control module N+1, and so on to the battery management monitoring acquisition modules N+2, N+3..., forming a chain-type communication network for collecting the temperature of the battery pack, and completing the communication and temperature measurement between the battery management acquisition units.

[0049] In the description of this specification, the description with reference to the terms "Example 1", "Example 2", etc. means that the specific features, structures, materials or characteristics described in conjunction with the implementation or example are included in at least one implementation or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more implementations or examples in a suitable manner.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery management monitoring and acquisition unit, wherein the battery management monitoring and acquisition unit is arranged corresponding to a battery pack, characterized in that: The battery management monitoring acquisition unit comprises: Battery management monitoring and acquisition module; and An optical fiber temperature sensor connected to the battery management monitoring and acquisition module, each temperature measuring grating of the optical fiber temperature sensor is connected to each battery of the battery pack, and the optical fiber temperature sensor includes a first input end and a second output end connected to the first input end; The first input end is connected to the battery management monitoring acquisition module to convert the electrical signal communication data of the battery management monitoring acquisition module into optical signal communication data, and the second output end is connected to the battery management monitoring acquisition unit of the next battery pack to output the optical signal communication data; The battery management monitoring acquisition unit includes a temperature information acquisition module, which is connected to the first input end and is used to convert the electrical signal communication data obtained from the battery management monitoring acquisition module into optical signal communication data, and transmit it to the next battery management monitoring acquisition unit through the optical fiber temperature sensor; The temperature information acquisition module is also used to receive the optical signal communication data reflected from the temperature measuring grating, and obtain the temperature data of each battery according to the optical signal communication data analysis and output it as electrical signal communication data; The battery management monitoring acquisition unit also includes a photoelectric conversion module connected to the temperature information acquisition module, and the photoelectric conversion module is also connected to the second output end of the optical fiber temperature sensor of the battery management monitoring acquisition unit of the previous battery pack to convert the optical signal communication data into electrical signal communication data and transmit it to the current battery management monitoring acquisition unit; The photoelectric conversion module is a photoelectric conversion chip of DM9331A.

2. The battery management monitoring acquisition unit according to claim 1, characterized in that: The battery management monitoring acquisition unit also includes a control module disposed between the photoelectric conversion module and the temperature information acquisition module, and the control module is used to receive temperature data from the photoelectric conversion module and transmit the temperature data to the temperature information acquisition module.

3. A battery management monitoring and acquisition system, characterized in that: include: A plurality of battery management monitoring and acquisition units as described in any one of claims 1-2, wherein the plurality of battery management monitoring and acquisition units are arranged in a specific order.

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