Battery system and battery communication system thereof

Abstract

The utility model relates to a battery system and a battery communication system thereof. The battery communication system comprises at least one monitoring chip, at least one control unit, at least one wireless communication unit and at least one steering unit. The monitoring chip is connected to at least one battery unit of the plurality of battery strings. The wireless communication unit is connected to the monitoring chip, or connected to the control unit, or connected between the monitoring chip and the control unit. The steering unit is arranged adjacent to the wireless communication unit connected with the tail end of the battery string. The wireless communication unit and the steering units form a steering communication path through ear language wireless communication, each steering unit comprises a first antenna, a second antenna and a signal transfer circuit which are all arranged on the same circuit board, and the signal transfer circuit is connected with the first antenna and the second antenna so as to realize the ear language wireless communication.

Description

Technical Field

[0001] This application relates to a battery system, and more particularly to a battery system with communication steering function and its battery communication system. Background Technology

[0002] In prior art, battery management systems, due to their large number of battery cells or modules, often required sensing or identification of various internal battery cells or modules. This sensing or identification information included, but was not limited to, electrical information of each battery cell, factory-set identification information, and communication or identification between battery cells. With the widespread application of lithium iron phosphate batteries, their relatively flat discharge curve has allowed single-cell capacity to increase from several ampere-hours (2–3 Ah) to hundreds of ampere-hours (200–300 Ah), necessitating more precise battery monitoring parameters for battery energy storage systems. Currently, there is a trend towards equipping each battery in a battery energy storage system with a monitoring chip.

[0003] In response to the growth trend of the global energy storage system market, especially battery energy storage systems, they have become an important component of modern electronic systems. To improve the efficiency of battery energy storage systems, most battery packs are arranged in series, and the direct current (DC) voltage in the system increases with the number of batteries connected in series. As the series DC voltage increases, the DC voltage across the battery energy storage system also increases, posing a growing challenge to the safety and stability of the battery energy storage system.

[0004] Furthermore, when battery cells are connected in series, if the battery communication system connecting the monitoring chip uses a daisy chain communication path, it must wait for the daisy chain communication path to be cleared before it can send back monitoring information or send the next command. This significantly limits the communication efficiency of the battery communication system. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this application is to provide a battery system and its battery communication system, which employs a daisy chain communication path architecture. This architecture utilizes redirecting units to connect wireless communication units in a U-shape or S-shape, forming a redirecting communication path, such as a circularity communication path. After the control unit transmits a command to the monitoring chip in one direction within the circularity communication path, it can send the next command in the same direction without waiting for the circularity communication path to clear. Similarly, after any monitoring chip sends monitoring information in this direction, other monitoring chips can also send monitoring information in this direction without waiting for the circularity communication path to clear. Therefore, the circularity communication path can achieve virtually unlimited transmission efficiency.

[0006] The objective of this application and the technical problem it solves are achieved through the following technical solution. According to one aspect, this application proposes a battery communication system. The battery communication system includes at least one monitoring chip, at least one control unit, at least one wireless communication unit, and at least one steering unit. The monitoring chip is connected to at least one battery cell in a plurality of battery strings. The wireless communication unit is connected to the monitoring chip, to the control unit, or between the monitoring chip and the control unit. The steering unit is disposed at the end of an adjacent battery string connected to the wireless communication unit. The wireless communication unit and the steering unit form a redirecting communication path.

[0007] According to another aspect of this application, a battery system is provided. The battery system includes a plurality of battery strings, at least one monitoring chip, at least one control unit, at least one wireless communication unit, and at least one steering unit. Each battery string includes at least one battery cell. The monitoring chip is connected to the battery cell. The wireless communication unit is connected to the monitoring chip, the control unit, or between the monitoring chip and the control unit. The steering unit is disposed at the end of an adjacent battery string connected to the wireless communication unit. The wireless communication unit and the steering unit form a redirecting communication path.

[0008] To provide a better understanding of the above and other aspects of this disclosure, specific embodiments are described below in conjunction with the accompanying drawings: Attached Figure Description

[0009] Figure 1 A battery system and its battery communication system according to an embodiment of this application are illustrated.

[0010] Figure 2A schematic diagram of a wireless communication unit according to an embodiment of this application is shown.

[0011] Figure 3 An enlarged perspective view of a wireless communication unit according to an embodiment of this application is shown.

[0012] Figure 4 A perspective view of a steering unit according to an embodiment of this application is shown.

[0013] Figure 5 A top view of a steering unit according to an embodiment of this application is shown.

[0014] Figure 6 An enlarged view of a steering unit according to an embodiment of this application is shown. Detailed Implementation

[0015] The foregoing descriptions and other technical contents, features, and effects of this application will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings. The following descriptions of the embodiments are with reference to the accompanying drawings and are used to illustrate specific embodiments in which this application can be implemented. The foregoing descriptions and other technical contents, features, and effects of this application will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings.

[0016] The accompanying drawings and descriptions are intended to be illustrative in nature, not restrictive. In the drawings, structurally similar units are denoted by the same reference numerals. Furthermore, for the purposes of understanding and ease of description, the dimensions and thicknesses of each component shown in the drawings are arbitrary, but this application is not limited thereto.

[0017] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation, structure, features, and effects of a battery system and its battery communication system proposed in this application.

[0018] Please refer to Figure 1The illustration depicts a battery system 3000 and its battery communication system CMS3 according to an embodiment of this application. The battery system 3000 includes a plurality of battery strings 900i and a plurality of the aforementioned battery communication systems CMS3. Each battery string 900i includes a plurality of battery cells 900ij. In one embodiment, each battery string 900i may include only one battery cell 900ij. The battery cell 900ij is, for example, a lithium phosphate battery or a ternary lithium battery. These battery cells 900ij are connected in series to form a plurality of battery strings 900i. In one embodiment, these battery strings 900i are, for example, arranged in parallel and then connected in pairs in a U-shape or S-shape. For example, two battery strings 900i can be connected in a U-shape (the last group of battery cells 900ij connecting the two battery strings 900i). Three or more battery strings 900i can be connected in an S-shape (connecting the last group of battery units 900ij of the first two battery strings 900i and the first group of battery units 900ij of the last two battery strings 900i).

[0019] In one embodiment, when the battery system 3000 is operating, these battery cells 900ij need to be monitored to confirm whether battery parameters such as temperature and voltage are normal. Especially when the battery cells 900ij use lithium phosphate batteries, which have a relatively flat battery discharge curve, it is necessary to set up a monitoring chip 100ij for each battery cell 900ij for precise monitoring.

[0020] like Figure 1 As shown, the battery communication system CMS3 includes the aforementioned monitoring chip 100ij, at least one control unit 200i, several wireless communication units 500ij, and at least one steering unit 600i. In one embodiment, there may be only one monitoring chip 100ij, only one control unit 200i, only one wireless communication unit 500ij, and only one steering unit 600i. One monitoring chip 100ij is connected to one battery cell 900ij. The number of wireless communication units 500ij is the same as the number of monitoring chips 100ij.

[0021] In one embodiment, the control unit 200i is used to control these monitoring chips 100ij and collect monitoring information. Each wireless communication unit 500ij can be connected to a monitoring chip 100ij, a control unit 200i, or between the monitoring chip 100ij and the control unit 200i. Figure 1As shown, in a battery string 900i, there is a control unit 200i, and the first monitoring chip 100ij to the last monitoring chip 100ij communicate wirelessly with each other via a wireless communication unit 500ij. In each battery string 900i, the whispered wireless communication between the wireless communication units 500ij forms a daisy chain communication path.

[0022] In one embodiment, a redirecting unit 600i is disposed between the wireless communication units 500ij connected to the ends of two adjacent battery strings 900i. The redirecting unit 600i and the wireless communication units 500ij communicate via whispered wireless communication. These wireless communication units 500ij and the redirecting unit 600i form a redirecting communication path, for example, a circularity communication path. That is, the wireless communication paths of these battery strings 900i are connected in series using the redirecting unit 600i to form a redirecting communication path.

[0023] In one embodiment, the whispered wireless communication between the wireless communication unit 500ij and the turning unit 600i is only for communication between neighboring wireless communication units 500ij or turning units 600i, and will not interfere with or be interfered with by other wireless communication units 500ij or turning units 600i.

[0024] In one embodiment, the control unit 200i is, for example, a circuit, a circuit board, a storage device storing program code, or a chip. The chip may be, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microcontroller (MCU), microprocessor, digital signal processor (DSP), programmable controller, application-specific integrated circuit (ASIC), graphics processing unit (GPU), image signal processor (ISP), image processing unit (IPU), arithmetic logic unit (ALU), complex programmable logic device (CPLD), field-programmable gate array (FPGA), or other similar components or combinations thereof.

[0025] In one embodiment, the control unit 200i can perform time calibration through a host computer or a host server to enable the control unit 200i to have standard time information. The control unit 200i can then transmit a time synchronization signal to the monitoring chips 100ij through the wireless communication units 500ij and the steering unit 600i, and the monitoring chips 100ij will synchronously correct their internal circuit time according to the time synchronization signal.

[0026] In one embodiment, the wireless communication unit 500ij is, for example, an antenna module. Please refer to... Figure 2 and Figure 3 , Figure 2 A schematic diagram of a wireless communication unit 500ij according to an embodiment of the present disclosure is shown. Figure 3 A perspective enlarged view of a wireless communication unit 500ij according to an embodiment of the present disclosure is shown. Each wireless communication unit 500ij includes a first antenna AT1 and a second antenna AT2. The first antenna AT1 and the second antenna AT2 are connected to one of the monitoring chips 100ij.

[0027] In one embodiment, the first antenna AT1 and the second antenna AT2 of the adjacent monitoring chip 100ij are not directly electrically connected, but transmit wirelessly. The air can withstand the high trans-voltage accumulated due to the series connection of the battery cells 900ij, thereby improving operational safety.

[0028] like Figure 1 As shown, in order to form a turning communication path, this disclosure utilizes a turning unit 600i to connect the serially connected wireless communication units 500ij in a U-shape or S-shape to form a turning communication path and perform whispered wireless communication. Although both the turning unit 600i and the wireless communication unit 500ij are antenna modules, the structure of the turning unit 600i differs from the structure of the wireless communication unit 500ij in order to achieve the U-shape or S-shape turning connection method.

[0029] Please refer to the following at the same time Figures 4-6 , Figure 4 A perspective view of a steering unit 600i according to an embodiment of this application is shown. Figure 5 This drawing illustrates a top view of a steering unit 600i according to an embodiment of this application. Figure 6 An enlarged view of a steering unit 600i according to an embodiment of the present disclosure is shown. The steering unit 600i includes a circuit board BD, a first antenna AT1', a second antenna AT2', and a signal transfer circuit LN. The first antenna AT1' and the second antenna AT2' are disposed on the circuit board BD. The signal transfer circuit LN is disposed on the circuit board BD and is connected to the first antenna AT1' and the second antenna AT2'.

[0030] like Figure 4 and Figure 5 As shown, the first antenna AT1' and the second antenna AT2' of the steering unit 600i are located on the same side of the circuit board BD, so as to smoothly communicate with the wireless communication unit 500ij located on the same side.

[0031] In one embodiment, the first antenna AT1' and the second antenna AT2' of the steering unit 600i are substantially the same in size. The construction of the first antenna AT1' and the second antenna AT2' of the steering unit 600i can also be substantially the same. The first antenna AT1' and the second antenna AT2' of the steering unit 600i can radiate at the same frequency, and will not interfere with each other when the radiation intensity is low.

[0032] In one embodiment, such as Figure 6As shown, the first antenna AT1' includes a first metal line L11, a second metal line L12, a third metal line L13, a fourth metal line L14, a first conductive through-post P11, a second conductive through-post P12, and a third conductive through-post P13. The first metal line L11 and the second metal line L12 are substantially parallel to each other on a first surface S11 of the circuit board BD. The third metal line L13 and the fourth metal line L14 are substantially parallel to each other on a second surface S12 of the circuit board BD. The first conductive through-post P11 penetrates the circuit board BD and electrically connects the first metal line L11 and the third metal line L13; the second conductive through-post P12 penetrates the circuit board BD and electrically connects the second metal line L12 and the third metal line L13; and the third conductive through-post P13 penetrates the circuit board BD and electrically connects the second metal line L12 and the fourth metal line L14.

[0033] In one embodiment, the structure of the second antenna AT2' is, for example, the same as that of the first antenna AT1', and will not be described again here.

[0034] In one embodiment, such as Figure 5 As shown, the signal transfer circuit LN is disposed on the first surface S11 of the circuit board BD. The signal transfer circuit LN is disposed along the two inclined sides and the upper base of a trapezoid.

[0035] In one embodiment, after the series-connected wireless communication units 500ij are connected in a U-shape or S-shape to form a loop communication path using the steering unit 600i, the control unit 200i sends a command to the monitoring chip 100ij in one direction within the loop communication path. Then, it can continue sending the next command in the same direction without waiting for the loop communication path to clear. Similarly, after any monitoring chip 100ij sends monitoring information in this direction, other monitoring chips 100ij can also continue sending monitoring information in this direction without waiting for the loop communication path to clear. In this way, the loop communication path can achieve virtually unlimited transmission efficiency.

[0036] In another embodiment, the wireless communication unit and the steering unit can be a radio frequency coupler consisting of a circuit board and two communication lines.

[0037] In another embodiment, the wireless communication unit and the steering unit may also be an optical transceiver composed of a light receiving unit and a light emitting unit.

[0038] According to the above embodiment, by connecting the serially connected wireless communication units 500ij in a U-shape or S-shape using the steering unit 600i, a circular communication path can be formed. In this way, after the control unit 200i transmits a command to the monitoring chip 100ij in one direction within the circular communication path, it can continue to send the next command in the same direction without waiting for the circular communication path to clear. Similarly, after any monitoring chip 100ij sends monitoring information in this direction, other monitoring chips 100ij can also continue to send monitoring information in this direction without waiting for the circular communication path to clear. In this way, the circular communication path can achieve virtually unlimited transmission efficiency.

[0039] The above disclosure provides different features for implementing some embodiments or examples of this disclosure. Specific examples of components and configurations described above (e.g., mentioned values ​​or names) are used to simplify / illustrate some embodiments of this disclosure. Of course, these components and configurations are merely examples and are not intended to be limiting. Furthermore, reference numerals and / or letters may be repeated in various instances of some embodiments of this disclosure. This repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. The operation and explanation of the components in the wireless communication identification method of this application are provided in the description of the various embodiments in the wireless communication identification system, and will not be repeated here. The phrase "in one embodiment" is used repeatedly. This phrase does not usually refer to the same embodiment; however, it may refer to the same embodiment. The words "comprising," "having," and "including" are synonyms unless the context otherwise indicates otherwise.

[0040] The above description is merely a specific embodiment of this application, intended to facilitate understanding of the content of this application by those skilled in the art, and is not intended to limit this application in any way. Although this application has been disclosed above with specific embodiments, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A battery communication system, characterized by, The battery communication system includes: At least one monitoring chip, said at least one monitoring chip being connected to at least one battery cell of a plurality of battery strings; At least one control unit; At least one wireless communication unit, wherein the at least one wireless communication unit is connected to the at least one monitoring chip, connected to the at least one control unit, or connected between the at least one monitoring chip and the at least one control unit; and At least one steering unit is disposed at the end of the adjacent battery string connected to the at least one wireless communication unit, the at least one wireless communication unit and the at least one steering unit forming a steering communication path via whisper wireless communication, wherein each of the at least one steering unit includes: A circuit board; A first antenna is mounted on the circuit board; A second antenna, mounted on the circuit board; and A signal relay circuit is disposed on the circuit board. The signal relay circuit is connected to the first antenna and the second antenna to realize the whisper wireless communication.

2. The battery communication system as described in claim 1, characterized in that, The number of the at least one battery cell is multiple, the number of the at least one monitoring chip is multiple, and each monitoring chip is connected to one of the battery cells in the battery string; The number of the at least one wireless communication unit is multiple, and each of the wireless communication units is connected to one of the monitoring chips, or connected to the at least one control unit, or connected between the at least one control unit and one of the monitoring chips; and The at least one steering unit is disposed between the wireless communication units connected to the adjacent end of the battery string, and the wireless communication units and the at least one steering unit form the steering communication path.

3. The battery communication system of claim 2, wherein Each of the wireless communication units is an antenna module, wherein each of the wireless communication units includes: a first antenna; and a second antenna, wherein the first antenna and the second antenna are connected to one of the monitoring chips.

4. The battery communication system of claim 2, wherein The first antenna and the second antenna of each of the at least one steering unit are disposed on the same side of the circuit board.

5. The battery communication system as described in claim 2, characterized in that, The first antenna and the second antenna are substantially the same size; and The first antenna and the second antenna are essentially the same in construction.

6. The battery communication system of claim 2, wherein, Each of the wireless communication units and each of the at least one steering unit are antenna modules, and the structure of each of the wireless communication units is different from the structure of each of the at least one steering unit.

7. The battery communication system of claim 2, wherein The wireless communication unit includes a plurality of radio frequency couplers.

8. A battery system characterized by, The battery system includes: A plurality of battery strings, each of which includes at least one battery cell; At least one monitoring chip is connected to the at least one battery cell; At least one control unit; At least one wireless communication unit, wherein the at least one wireless communication unit is connected to the at least one monitoring chip, connected to the at least one control unit, or connected between the at least one monitoring chip and the at least one control unit; and At least one steering unit is disposed at the end of the adjacent battery string connected to the at least one wireless communication unit, the at least one wireless communication unit and the at least one steering unit forming a steering communication path via whisper wireless communication, wherein each of the at least one steering unit includes: A circuit board; A first antenna is mounted on the circuit board; A second antenna, mounted on the circuit board; and A signal relay circuit is disposed on the circuit board. The signal relay circuit is connected to the first antenna and the second antenna to realize the whisper wireless communication.

9. The battery system as claimed in claim 8, characterized in that, The number of the at least one battery cell is multiple, the number of the at least one monitoring chip is multiple, and each monitoring chip is connected to one of the battery cells in the battery string; The number of the at least one wireless communication unit is multiple, and each of the wireless communication units is connected to one of the monitoring chips, or connected to the at least one control unit, or connected between the at least one control unit and one of the monitoring chips; and The at least one steering unit is disposed between the wireless communication units connected to the adjacent end of the battery string, and the wireless communication units and the at least one steering unit form the steering communication path.

10. The battery system as claimed in claim 9, characterized in that, The first antenna and the second antenna of each of the at least one steering unit are disposed on the same side of the circuit board; The first antenna and the second antenna are substantially the same size; and The first antenna and the second antenna are essentially the same in construction.

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