Wireless communication series system and antenna module thereof

Abstract

The utility model relates to a wireless communication series system and an antenna module thereof, and the system comprises a first circuit board which is provided with a first antenna module, and the first antenna module comprises a first front side wireless signal end and a first rear side wireless signal end; and the second circuit board is arranged adjacent to the first circuit board, the second circuit board is provided with a second antenna module, and the second antenna module comprises a second front side wireless signal end and a second rear side wireless signal end. The first rear side wireless signal end is adjacent to the second front side wireless signal end, and the first front side wireless signal end of the first antenna module is far away from the second rear side wireless signal end of the second antenna module. Wherein wireless signal connection is generated between the first circuit board and the second circuit board between the first rear side wireless signal end and the second front side wireless signal end which are adjacent to each other.

Description

Technical Field

[0001] The present application relates to a wireless communication serial system and an antenna module thereof, and more particularly to a wireless communication serial system and an antenna module thereof, which form a wireless communication serial system and an antenna module with a special communication mode between a series of multiple circuit boards through the antenna structure design at the wireless signal end. Background Art

[0002] In the prior art, in the signal management system between stacked or parallel electronic devices, the signal connection between each electronic device is often through a wired daisy chain connection, and the signal is transmitted in sequence according to the connection order of each electronic device in the wired connection. However, the wired connection often forms a long line, and the high impedance in the long line causes the signal transmission therein to consume a lot of power. In addition, if some electronic devices in the wired daisy chain connection are repaired or moved, the complex line configuration is not conducive to line management and is very easy to make mistakes.

[0003] Another way is to consider transmitting signals between electronic devices wirelessly, which can avoid the problems of high impedance or wiring in wired signal technology. However, in traditional wireless signal transmission methods, the antenna module is difficult to effectively transmit wireless signals to a specified electronic device.

[0004] In view of this, how can a wireless communication series connection technology and its antenna module be provided in a wireless signal battery management system to allow electronic devices to communicate through wireless communication without the need for wiring, and to simply and clearly transmit wireless signals in sequence according to the distance between the electronic devices? This is very important for wireless signal management between stacked or parallel electronic devices.

[0005] Application Contents

[0006] In order to solve the above technical problems, the purpose of this application is to provide a wireless communication series system and its antenna module design, which can effectively limit the transmission of wireless signals to the next adjacent specific communication location to form a wireless daisy chain battery management system architecture.

[0007] The purpose of the present application and the technical problem to be solved are achieved by adopting the following technical solutions. In one viewpoint, a wireless communication serial system is proposed according to the present application, which includes: a first circuit board, provided with a first antenna module, the first antenna module includes a first front wireless signal terminal and a first rear wireless signal terminal; and a second circuit board, arranged adjacent to the first circuit board, the second circuit board is provided with a second antenna module, the second antenna module includes a second front wireless signal terminal and a second rear wireless signal terminal. The first rear wireless signal terminal of the first antenna module is adjacent to the second front wireless signal terminal of the second antenna module, and the first front wireless signal terminal of the first antenna module is far away from the second rear wireless signal terminal of the second antenna module. Among them, the first circuit board and the second circuit board are adjacent to each other at the first rear wireless signal terminal and the second front wireless signal terminal to generate a first wireless signal connection between each other, and the first circuit board and the second circuit board are only transmitted by the first wireless signal connection. In multiple embodiments, the antenna design method may include different operation steps.

[0008] In one embodiment, the first front wireless signal terminal does not generate a wireless signal connection with the second antenna module and the first rear wireless signal terminal, and the second rear wireless signal terminal does not generate a wireless signal connection with the first antenna module and the second front wireless signal terminal.

[0009] In one embodiment, compared to the signal level of the first wireless signal connection received by the first rear wireless signal terminal and the second front wireless signal terminal, the wireless signal connection level between the first front wireless signal terminal and the second antenna module, the wireless signal connection level between the first front wireless signal terminal and the first rear wireless signal terminal, the wireless signal connection level between the second rear wireless signal terminal and the first antenna module, and the wireless signal connection level between the second rear wireless signal terminal and the second front wireless signal terminal are lower than a connection level threshold; wherein according to the difference in the level threshold, only the first wireless signal connection is used for signal transmission between the first circuit board and the second circuit board.

[0010] In addition, in the embodiment of the present application, each circuit board further includes at least one of a signal level adjustment circuit and a signal isolation module. In one embodiment, the signal level adjustment circuit includes a transmission strength adjustment unit, which gradually adjusts the signal transmission strength between the first rear wireless signal terminal and the second front wireless signal terminal from low to high until the first wireless signal connection is generated.

[0011] In one embodiment, the signal level adjustment circuit includes a reception signal-to-noise ratio adjustment unit, which gradually adjusts the signal reception signal-to-noise ratio of each of the aforementioned wireless signal terminals from low to high until a first wireless signal connection is generated between the first rear wireless signal terminal and the second front wireless signal terminal.

[0012] In one embodiment, the wireless communication serial connection system further includes a third circuit board, which is disposed adjacent to the second circuit board. The third antenna module of the third circuit board includes a third front wireless signal terminal and a third rear wireless signal terminal, and the second rear wireless signal terminal is adjacent to the third front wireless signal terminal. A second wireless signal connection is generated between the second rear wireless signal terminal and the third front wireless signal terminal. The first wireless signal connection and the second wireless signal connection form a wireless daisy chain.

[0013] In one embodiment, among the aforementioned various wireless signal terminals and the aforementioned circuit boards on which the wireless signal terminals are arranged, the wireless signal terminals include: a radiating portion, arranged at the edge of each circuit board, the radiating portion having a comb-shaped portion, and the comb-shaped portion radiates an electric coupling wave toward the side of the circuit board to another radiating portion of an adjacent circuit board according to a transmission signal; or, the radiating portion has a circular antenna, and the circular antenna radiates a magnetic coupling wave toward the side of the circuit board to another radiating portion of an adjacent circuit board according to a transmission signal; and a signal isolation module, which determines an effective communication range of the wireless signal terminal emitting the electric coupling wave or the magnetic coupling wave.

[0014] In one embodiment, the comb-shaped portion includes a long straight feed line and a plurality of radiating plates, each of which includes a plurality of protrusions, at least a portion of which corresponds to at least a portion of a plurality of protrusions of another radiating portion on an adjacent circuit board, for transmitting and receiving electrically coupled waves. Alternatively, the loop antenna is formed by a plurality of loop lines in different conductive layers on a circuit board, and loop columns that respectively conduct the loop lines, wherein at least a portion of the loop antenna corresponds to at least a portion of a loop antenna of another radiating portion on an adjacent circuit board, for transmitting and receiving magnetically coupled waves.

[0015] In one embodiment, according to the technology of the present application, the effective communication range has a narrow and long range.

[0016] In one embodiment, the signal isolation module includes a sheet-like structure disposed on the circuit board and parallel to the comb-shaped portion to determine the effective communication range of the wireless signal end emitting the electric coupling wave. Alternatively, when the wireless signal is a magnetic coupling wave, the signal isolation module is disposed on the inner side of the radiation portion toward the circuit board, and the signal isolation module includes a grid-like structure of two conductive layers in the circuit board and a plurality of shielding posts connected to the two conductive layers to determine the effective communication range of the wireless signal end emitting the magnetic coupling wave.

[0017] According to another viewpoint, the present application provides a wireless communication serial system, comprising: a first circuit board, provided with a first wireless signal end; and a second circuit board, arranged adjacent to the first circuit board, provided with a second wireless signal end. The first wireless signal end is adjacent to the second wireless signal end, and each wireless signal end respectively comprises: a radiating portion, arranged at the edge of each circuit board, the radiating portion having a comb-shaped portion, the comb-shaped portion emitting an electric coupling wave toward the side of the circuit board in a direction perpendicular to the normal of the flat surface on the circuit board according to a transmission signal to another radiating portion of the wireless signal end on the adjacent circuit board; or the radiating portion having a cyclic antenna, the cyclic antenna emitting a magnetic coupling wave toward the side of the circuit board in a direction perpendicular to the normal of the flat surface on the circuit board according to a transmission signal to another radiating portion of the wireless signal end on the adjacent circuit board; and a signal isolation module, limiting an effective communication range of the wireless signal end emitting an electric coupling wave or a magnetic coupling wave to be basically located between the first wireless signal end on the first circuit board and the second wireless signal end on the second circuit board.

[0018] According to another viewpoint, the present application provides an antenna module for use in a wireless communication serial system, comprising: a first circuit board, provided with a first wireless signal end; and a second circuit board, arranged adjacent to the first circuit board, the second circuit board being provided with a second wireless signal end; wherein the first wireless signal end is adjacent to the second wireless signal end, and each of the wireless signal ends respectively comprises: a radiating portion, arranged at an edge of each of the circuit boards, the radiating portion having a comb-shaped portion, the comb-shaped portion emitting an electric coupling wave toward the side of the circuit board in a direction perpendicular to the normal of the circuit board according to a transmission signal to another radiating portion adjacent to the wireless signal end; or, the radiating portion having a cyclic antenna, the cyclic antenna emitting a magnetic coupling wave toward the side of the circuit board in a direction perpendicular to the normal of the circuit board according to the transmission signal to another radiating portion adjacent to the wireless signal end; and a signal isolation module, limiting an effective communication range of the wireless signal end emitting the electric coupling wave or the magnetic coupling wave, which is basically located between the first wireless signal end on the first circuit board and the second wireless signal end on the second circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 , 2 3 are schematic diagrams of wireless communication series systems according to multiple embodiments of the present application.

[0020] Figure 4A , 4B 4C respectively illustrate multiple schematic diagrams of a circuit board and a wireless signal terminal according to an embodiment of the present application.

[0021] Figure 5A ,5B 5C and 5D respectively illustrate a plurality of schematic diagrams of a circuit board and a wireless signal terminal design of an antenna module according to another embodiment of the present application.

[0022] Fig. 6A , 6B Schematic diagrams showing the positions of a circuit board and a battery in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The other technical contents, features and effects mentioned above in this application will be clearly presented in the detailed description of the preferred embodiments with reference to the drawings below. The description of the following embodiments is with reference to the attached drawings to illustrate specific embodiments that can be implemented in this application. The other technical contents, features and effects mentioned above in this application will be clearly presented in the detailed description of the preferred embodiments with reference to the drawings below.

[0024] The accompanying drawings and descriptions are considered to be illustrative in nature and not restrictive. In the drawings, units with similar structures are represented by the same reference numerals. In addition, for the sake of understanding and ease of description, the size and thickness of each component shown in the drawings are arbitrarily shown, but the application is not limited thereto.

[0025] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined application purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of a wireless communication series system and its antenna module proposed in the present application in combination with the accompanying drawings and preferred embodiments.

[0026] Please refer to Figure 1The present application provides a wireless communication series system 10, which is applied to a battery management system, and includes: a first circuit board 110, provided with a first antenna module 112, wherein the first antenna module 112 includes a first front wireless signal terminal 112f and a first rear wireless signal terminal 112r; and a second circuit board 120, which is arranged adjacent to the first circuit board 110, and the second circuit board 120 is provided with a second antenna module 122, wherein the second antenna module 122 includes a second front wireless signal terminal 122f and a second rear wireless signal terminal 122r. The first rear wireless signal end 112r of the first antenna module 112 is adjacent to the second front wireless signal end 122f of the second antenna module 122, and the first front wireless signal end 112f of the first antenna module 112 is far away from the second rear wireless signal end 122r of the second antenna module 122 (that is, compared with the distance between the first rear wireless signal end 112r and the second front wireless signal end 122f, the distance between the first front wireless signal end 112f and the second rear wireless signal end 122r is longer). Among them, between the first circuit board 110 and the second circuit board 120, an effective first wireless signal connection CON1 is generated between the first rear wireless signal terminal 112r and the second front wireless signal terminal 122f adjacent to each other, so that the first circuit board 110 and the second circuit board 120 are only transmitted by the first wireless signal connection CON1 (that is, no effective wireless signal connection is generated between the first front wireless signal terminal 112f and the first rear wireless signal terminal 112r, and the first front wireless signal terminal 112f is not connected to the first circuit board 110). No effective wireless signal connection is generated between the first front wireless signal terminal 112f and the second rear wireless signal terminal 122r, no effective wireless signal connection is generated between the second front wireless signal terminal 122f and the second rear wireless signal terminal 122r, and no effective wireless signal connection is generated between the first rear wireless signal terminal 112r and the second rear wireless signal terminal 122r).

[0027] In one embodiment, the first front wireless signal terminal 112f of the first antenna module 112 does not establish an effective wireless signal connection with the first rear wireless signal terminal 112r and the second antenna module 122, and the second rear wireless signal terminal 122r of the second antenna module 122 does not establish a wireless signal connection with the second front wireless signal terminal 122f and the first antenna module 112. The first circuit board 110 and the second circuit board 120 are only transmitted via the first wireless signal connection CON1. ​​In this way, there is no effective signal transmission feature between non-adjacent wireless signal terminals in the present application. In stacked or parallel circuit boards (for example, circuit boards respectively arranged in each electronic device), wireless signal management can be performed according to the arrangement order of the circuit boards. The innovative technology provided in the present application can achieve this effect by limiting the effective transmission range or level of the wireless signal. In the subsequent embodiments, each technical content in the innovative technology of the present application is described in detail.

[0028] Continue to refer to Figure 1 , in another way, by means of this antenna design method, there is no signal connection between the first front wireless signal terminal 112f of the first antenna module 112 and the second front wireless signal terminal 122f of the second antenna module 122, there is no signal connection between the first rear wireless signal terminal 112r of the first antenna module 112 and the second rear wireless signal terminal 122r of the second antenna module 122, and there is no signal connection between the first front wireless signal terminal 112f of the first antenna module 112 and the second rear wireless signal terminal 122r of the second antenna module 122. In this way, wireless signal management can be performed according to the arrangement sequence of the circuit boards, and tree-like or mesh-like wireless signal connections between circuit boards (or between antenna modules) can be avoided, which makes it difficult to distinguish and identify each circuit board in the wireless signal connection sequence.

[0029] In order to achieve the aforementioned wireless signal management effect, in one embodiment, each wireless signal terminal must have a clear level isolation effect when receiving the signal of the first wireless signal connection CON1. ​​The wireless signal terminal performing signal transmission must be able to clearly distinguish the signal level of the first wireless signal connection CON1 received by the wireless signal terminal not connected. For example, in the antenna design method, compared to the signal level of the first wireless signal connection CON1 received between the first rear wireless signal terminal 112r and the second front wireless signal terminal 122f, the wireless signal connection level between the first front wireless signal terminal 112f and the second antenna module 122, the wireless signal connection level between the first front wireless signal terminal 112f and the first rear wireless signal terminal 112r, the wireless signal connection level between the second rear wireless signal terminal 122r and the first antenna module 112, and the wireless signal connection level between the second rear wireless signal terminal 122r and the second front wireless signal terminal 122f are lower than a connection level threshold (e.g., 20 dBw, or other connection level thresholds). According to the difference in the level thresholds, other wireless signal connections with lower levels can be distinguished, and only the first wireless signal connection CON1 with a higher level is used for signal transmission between the first circuit board 110 and the second circuit board 120. The difference in the connection level threshold value enables each wireless signal terminal to have a clear level isolation effect when receiving the signal of the first wireless signal connection CON1, and it is less likely for the wireless signal terminal to receive the signal incorrectly.

[0030] Reference Figure 2 In the embodiment of the present application, each circuit board 110, 120 may further include a signal level adjustment circuit CS and / or a signal isolation module MS (refer to Figure 4A or 5A, for details, please refer to the detailed contents of the related embodiments in the drawings). In one embodiment, the signal level adjustment circuit CS includes a transmission strength adjustment unit, which gradually adjusts the signal transmission strength between the first rear side wireless signal terminal 112r and the second front side wireless signal terminal 122f from low to high until the first wireless signal connection CON1 is generated. For example, the first rear side wireless signal terminal 112r transmits a signal, and the second front side wireless signal terminal 122f receives a signal; or, the second front side wireless signal terminal 122f transmits a signal, and the first rear side wireless signal terminal 112r receives a signal. This method is that when the adjacent wireless signal terminal has sufficient signal strength for communication, the signal strength is maintained and the level is no longer increased, so as to distinguish that the farther wireless signal terminal can also communicate with this signal. Thus, for the first front wireless signal terminal 112f and the second rear wireless signal terminal 122r which are far apart, the signal strength of the first wireless signal connection CON1 is insufficient and signal transmission cannot be performed. Thus, the first wireless signal connection CON1 can be maintained as a one-to-one wireless signal connection between wireless signal terminals.

[0031] In one embodiment, the signal level adjustment circuit CS includes a receiving signal-to-noise ratio adjustment unit, which gradually adjusts the signal receiving signal-to-noise ratio of each of the aforementioned wireless signal terminals from low to high until the first wireless signal connection CON1 is generated between the first rear wireless signal terminal 112r and the second front wireless signal terminal 122f. In this way, the first wireless signal connection CON1 is generated between the adjacent first rear wireless signal terminal 112r and the second front wireless signal terminal 122f at the lowest effective signal-to-noise ratio, and this signal-to-noise ratio is sufficient to generate the first wireless signal connection CON1. ​​The first front wireless signal terminal 112f and the second rear wireless signal terminal 122r, which are farther apart, will receive a lower signal-to-noise ratio of the first wireless signal connection CON1 (for example, the signal strength is weaker due to the distance), so they cannot connect to the first wireless signal connection CON1. ​​In this way, the first wireless signal connection CON1 is a one-to-one signal connection between wireless signal terminals.

[0032] Reference Figure 3 In one embodiment, the wireless communication serial connection system 10 further includes a third circuit board 130, which is disposed adjacent to the second circuit board 120. The third antenna module 132 of the third circuit board 130 includes a third front wireless signal terminal 132f and a third rear wireless signal terminal 132r. The second rear wireless signal terminal 122r is adjacent to the third front wireless signal terminal 132f. A second wireless signal connection CON2 is generated between the second rear wireless signal terminal 122r and the third front wireless signal terminal 132f by an antenna design method. The first wireless signal connection CON1 and the second wireless signal connection CON2 form a wireless daisy chain. The rear wireless signal terminal of each circuit board is respectively connected to the front wireless signal terminal of another circuit board adjacent to the front side to perform wireless signal transmission between each circuit board. Furthermore, the present application generates a one-to-one wireless signal serial connection function between these circuit boards by an antenna design method, rather than a tree-like or mesh connection commonly seen in wireless signal connection topology in traditional technology.

[0033] Reference Figure 4A In one embodiment, the aforementioned various wireless signal terminals (e.g., 112f, 112r, 122f, 122r, 132f, or 132r) include: a radiating portion RA disposed at an edge of a circuit board PCB (e.g., a first circuit board 110, a second circuit board 120, a third circuit board 130, or other circuit boards), the radiating portion RA having a comb-shaped portion RAC ( Figure 4B ), the comb-shaped portion RAC emits an electric coupling wave EW toward the side of the circuit board to the adjacent circuit board according to a transmission signal in the circuit board PCB ( Figure 4C ) of another radiating portion RA. Or, refer to Figure 5A , 5BThe radiating portion RA has a loop antenna RAL. The loop antenna RAL emits a magnetic coupling wave WM toward the side of the circuit board PCB to another radiating portion RA of the adjacent circuit board according to the transmission signal. Figure 5A ); and a signal isolation module MS, which determines an effective communication range RE ( Figure 1 ). Thus, for wireless signals with different physical characteristics, such as electrically coupled waves EW or magnetically coupled waves WM, the present application provides corresponding wireless communication solutions between adjacent circuit boards. The effective communication range RE in the figure is an example, and its range can be adjusted due to the design and operation of the signal level adjustment circuit CS and the signal isolation module MS. The effective communication range RE is mainly located between two adjacent wireless signal ends.

[0034] In one embodiment, the comb-shaped portion RAC includes a long straight feed line RAC2 and a plurality of radiation plates RAC4, and the radiation plates RAC4 each include a plurality of protrusions RAC42 (such as Figure 4B As shown), at least a portion of the protrusion RAC42 corresponds to at least a portion of the multiple protrusions RAC42 of another radiation portion RA on another circuit board (as shown Figure 4C In another embodiment, the loop antenna RAL is formed by a plurality of loop lines RAL2 in different conductive layers MS42 on the circuit board PCB, and loop posts RAL4 that respectively conduct the loop lines RAL2 (as shown in FIG. Figure 5B As shown), wherein at least a portion of the cyclic antenna RAL corresponds to at least a portion of the cyclic antenna RAL of another radiating portion RA on another circuit board (as shown Figure 5A shown).

[0035] In one embodiment, the radiating portion RA is coupled to a signal feeding point on a circuit board PCB, and the radiating portion RA emits an electric coupling wave EW through a comb portion RAC according to a transmission signal from the signal feeding point. Alternatively, the radiating portion RA is coupled to a signal feeding point on a circuit board PCB, and the radiating portion RA emits a magnetic coupling wave WM through a loop antenna RAL according to a transmission signal from the signal feeding point.

[0036] In one embodiment, the protrusion RAC42 of the radiation plate RAC4 may have various shapes, such as needle-shaped, pointed, rounded, triangular, etc. In another embodiment, the length of the long straight feed line RAC2 may be substantially proportional to the wavelength of the transmitted wireless signal.

[0037] In one embodiment, the comb-shaped portion RAC can be basically arranged in the same plane (in the same layer of the circuit board PCB). Alternatively, according to requirements such as circuit parasitic effects and wiring, the comb-shaped portion RAC is roughly arranged in the same plane. Among them, the normal direction NR of the plane on the comb-shaped portion RAC is basically parallel to the normal direction NP of the flat surface of the circuit board PCB. In another embodiment, the loop antenna RAL can be basically arranged in the same plane, but is not limited to the same plane. The normal direction NR of the same plane of the loop antenna RAL is basically toward the side of the circuit board PCB and perpendicular to the normal direction NP of the flat surface of the circuit board PCB.

[0038] Reference Figure 1 In one embodiment, according to the technology of the present application, the effective communication range RE has a narrow and long range. For example, the effective communication range can be used to represent the effective communication range of the wireless signal. Basically, the effective communication range is a three-dimensional range, and this three-dimensional range forms a narrow and long range between adjacent wireless signal terminals. The effective communication range of this narrow and long range can isolate other remote wireless signal terminals on each circuit board from the effective communication range. In this way, the effective communication range also defines the signal isolation range of other wireless signal terminals.

[0039] In one embodiment, the signal isolation module MS can determine the form of the signal isolation module MS according to whether the wireless signal is an electrically coupled wave EW or a magnetically coupled wave WM. Figure 4A As shown, the signal isolation module MS includes at least one sheet structure MS2 (a conductive layer located outside the comb-shaped portion RAC) disposed on the circuit board PCB and parallel to the comb-shaped portion RAC to determine the effective communication range RE (such as Figure 1 Alternatively, when the wireless signal is a magnetically coupled wave WM, the signal isolation module MS4 is disposed on the inner side of the radiation portion RA toward the circuit board PCB, and the signal isolation module MS4 includes a grid structure MS4 (such as two conductive layers MS42 in the circuit board and a plurality of shielding posts MS44 connected to the two conductive layers MS42). Figure 5C As shown, Figure 5A The local cross-sectional view of the section line AA in the middle section is used to determine and limit the effective communication range RE ( Figure 1 ).

[0040] Figure 4A In the embodiment, the sheet structure MS2 shields a portion of the electric coupling wave EW emitted by the radiation portion RA to form a narrow and long effective communication range of the wireless signal. Figure 5A , 5CIn the figure, the grid structure MS4 shields a part of the magnetic coupling wave WM emitted by the radiation portion RA, mainly shielding the aforementioned magnetic coupling wave WM toward the inner side of the circuit board, thereby forming a narrow and long effective communication range of the wireless signal.

[0041] In one embodiment, the sheet structure MS2 is disposed on the conductive layer MS2 corresponding to the comb-shaped portion RAC on the circuit board PCB, or on the conductive layer on the outer side of the effective communication range of the radiation portion RA. The two conductive layers MS42 of the grid structure MS4 can be disposed on the conductive layer on the outer side of the effective communication range of the radiation portion RA on the circuit board PCB. In addition, the sheet structure MS2 and the grid structure MS4 can also prevent the signal from being recorded by the outside, and have the function of information confidentiality.

[0042] also, Figure 5A , 5B In 5C, the grid structure MS4 on the circuit board PCB is a single-row grid structure MS4 (two wireless signal terminals on the same circuit board share this single-row grid structure MS4). If necessary, the grid structure MS4 can also be set as a double-row grid structure (the double-row grid structure MS4 corresponds to the two wireless signal terminals on the same circuit board). Please refer to Figure 5D .

[0043] Reference Figure 1 , 4A5B. According to another viewpoint, the present application provides a wireless communication serial system 10, comprising: a first circuit board 110, provided with a first wireless signal terminal (e.g., a first rear wireless signal terminal 112r); and a second circuit board 120, arranged adjacent to the first circuit board 110, and the second circuit board 120 is provided with a second wireless signal terminal (e.g., a second front wireless signal terminal 122f). The first wireless signal end is adjacent to the second wireless signal end, and each wireless signal end includes: a radiating portion RA, which is arranged at the edge of each circuit board 110 (the circuit board 110 is taken as an example for explanation), the radiating portion RA has a comb-shaped portion RAC, and the comb-shaped portion RAC emits an electric coupling wave EW toward the side of the circuit board 110 perpendicular to the normal direction NP of the flat surface on the circuit board 110 according to a transmission signal in the circuit board 110 to another radiating portion RA of the wireless signal end of the adjacent circuit board 120, or the radiating portion RA has a circular antenna RAL, and the circular antenna RAL transmits an electric coupling wave EW perpendicular to the normal direction NP of the flat surface on the circuit board 110 according to a transmission signal on the circuit board 110. Another radiating portion RA (the normal direction NR of the cyclic antenna RAL is basically perpendicular to the normal direction NP of the flat surface on the circuit board 110) of the wireless signal end of the adjacent circuit board 120 transmits a magnetically coupled wave WM toward the side of the circuit board 110; and a signal isolation module MS limits the effective communication range of the wireless signal end transmitting the electric coupled wave EW or the magnetically coupled wave WM, which is basically located between the first wireless signal end on the first circuit board 110 (or a first side 114 on the first circuit board 110 close to the first wireless signal end), and the second wireless signal end on the second circuit board 120 (or a second side 124 on the second circuit board 120 close to the second wireless signal end).

[0044] refer to Fig. 6A , 6B In the above-mentioned embodiments, the front side and the rear side of the front side wireless signal terminal and the rear side wireless signal terminal in each circuit board are determined according to the position arrangement order between each circuit board. For example, the first circuit board 110 is followed by the second circuit board 120, the direction of the first circuit board 110 toward the second circuit board 120 is the rear side (for example, the first rear side wireless signal terminal 112r), and the direction of the second circuit board 120 toward the first circuit board 110 is the front side (for example, the second front side wireless signal terminal 122f). Similarly, the second circuit board 120 is followed by the third circuit board 130, the direction of the second circuit board 120 toward the third circuit board 130 is the rear side (for example, the second rear side wireless signal terminal 122r), and the direction of the third circuit board 130 toward the second circuit board 120 is the front side (for example, the third front side wireless signal terminal 132f). The above-mentioned front and rear directional relationship is not determined according to the fixed direction between the two wireless signal terminals on the circuit board, nor is it determined according to the setting relationship of the positive and negative poles of the battery matched with the circuit board. Fig. 6A ,6B The positional matching relationship between each battery BAT and the circuit boards 110, 120, 130 in different embodiments is shown, wherein the size relationship between each battery and the circuit board is only for illustration, and the connection between the positive and negative electrodes of adjacent batteries BAT is indicated by dotted lines. Fig. 6A , 6B The embodiment of the battery BAT is shown in series connection, but it can be changed to series-parallel connection or other connection methods if necessary. Whether it is series connection or series-parallel connection, it does not affect the arrangement relationship between the front and rear ends of each circuit board in this case, which is determined according to the position arrangement order between each circuit board.

[0045] For the operation and explanation of each component in the wireless communication identification method of this application, please refer to the description of each embodiment of the wireless communication identification system, which will not be repeated here. The phrase "in one embodiment" and the like are used repeatedly. This phrase does not usually refer to the same embodiment; but it can also refer to the same embodiment. The words "comprising", "having" and "including" are synonymous unless the context indicates other meanings.

[0046] The above description is only a specific embodiment of the present application, which is intended to make it easier for those familiar with the present technology to understand the content of the present application, and does not impose any form of limitation on the present application. Although the present application has been disclosed as above with specific embodiments, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A wireless communication series system, used in a battery management system, characterized in that: The wireless communication series system comprises: A first circuit board is provided with a first antenna module, wherein the first antenna module includes a first front wireless signal terminal and a first rear wireless signal terminal; and A second circuit board is disposed adjacent to the first circuit board, the second circuit board is provided with a second antenna module, the second antenna module includes a second front wireless signal terminal and a second rear wireless signal terminal; The first rear wireless signal end of the first antenna module is adjacent to the second front wireless signal end of the second antenna module, and the first front wireless signal end of the first antenna module is far away from the second rear wireless signal end of the second antenna module; Among them, a first wireless signal connection is generated between the first circuit board and the second circuit board when the first rear wireless signal end and the second front wireless signal end are adjacent to each other, and the first circuit board and the second circuit board are only transmitted through the first wireless signal connection.

2. The wireless communication serial connection system according to claim 1, characterized in that: The first front wireless signal end does not generate a wireless signal connection with the second antenna module and the first rear wireless signal end, and the second rear wireless signal end does not generate a wireless signal connection with the first antenna module and the second front wireless signal end.

3. The wireless communication serial connection system according to claim 1, characterized in that: Compared to the signal level of the first rear wireless signal terminal and the second front wireless signal terminal receiving the first wireless signal connection, the wireless signal connection level between the first front wireless signal terminal and the second antenna module, the wireless signal connection level between the first front wireless signal terminal and the first rear wireless signal terminal, the wireless signal connection level between the second rear wireless signal terminal and the first antenna module, and the wireless signal connection level between the second rear wireless signal terminal and the second front wireless signal terminal are lower than a connection level threshold; wherein according to the difference in the level threshold, the first circuit board and the second circuit boards are only connected using the first wireless signal connection for signal transmission.

4. The wireless communication serial connection system according to claim 1, characterized in that: The first circuit board or the second circuit board includes a signal isolation module or a signal level adjustment circuit.

5. The wireless communication serial connection system according to claim 4, characterized in that: The signal level adjustment circuit includes a transmission strength adjustment unit, which gradually adjusts the signal transmission strength between the first rear wireless signal end and the second front wireless signal end from low to high until the first wireless signal connection is generated, so as to avoid the first front wireless signal end and the second rear wireless signal end being connected to the first wireless signal connection.

6. The wireless communication serial connection system according to claim 4, characterized in that: The signal level adjustment circuit includes a reception signal-to-noise ratio adjustment unit, which gradually adjusts the signal reception signal-to-noise ratio of each of the aforementioned wireless signal ends from low to high until the first wireless signal connection is generated between the first rear wireless signal end and the second front wireless signal end, so as to avoid the first front wireless signal end and the second rear wireless signal end being connected to the first wireless signal connection.

7. The wireless communication serial connection system according to claim 1, characterized in that: It also includes a third circuit board, which is arranged adjacent to the second circuit board. The third circuit board includes a third front wireless signal terminal and a third rear wireless signal terminal. The second rear wireless signal terminal is adjacent to the third front wireless signal terminal. The second rear wireless signal terminal and the third front wireless signal terminal have a second wireless signal connection with each other.

8. The wireless communication serial connection system according to claim 7, characterized in that: The first wireless signal connection and the second wireless signal connection form a wireless daisy chain connection.

9. The wireless communication serial connection system according to claim 1, characterized in that: The first antenna module or the second antenna module includes a radiating portion disposed at an edge of each of the circuit boards, the radiating portion having a comb-shaped portion, the comb-shaped portion emitting an electric coupling wave toward the side of the circuit board to another radiating portion of an adjacent circuit board according to a transmission signal; or the radiating portion has a loop antenna, the loop antenna emitting a magnetic coupling wave toward the side of the circuit board to another radiating portion of an adjacent circuit board according to the transmission signal; and The first circuit board or the second circuit board includes a signal isolation module to determine an effective communication range of the wireless signal end transmitting the electric coupling wave or the magnetic coupling wave.

10. The wireless communication serial connection system according to claim 9, characterized in that: The comb-shaped portion includes a long straight feed line and a plurality of radiation plates, each of the radiation plates includes a plurality of protrusions, and at least a portion of the protrusions corresponds to at least a portion of the plurality of protrusions of the other radiation portion; or The loop antenna is formed by a plurality of loop lines in different conductive layers on the first circuit board or the second circuit board, and loop columns respectively conducting the loop lines, wherein at least a portion of the loop antenna corresponds to at least a portion of the loop antenna of the other radiating portion.

11. The wireless communication serial connection system according to claim 9, characterized in that: The effective communication range has a narrow and long range.

12. The wireless communication serial connection system according to claim 9, characterized in that: The signal isolation module includes a sheet-like structure parallel to the comb-shaped portion to determine the effective communication range of the first front wireless signal end, the first rear wireless signal end, the second front wireless signal end, or the second rear wireless signal end transmitting the electric coupling wave; or, the signal isolation module is arranged on an inner side of the radiation portion toward the circuit board, and the signal isolation module includes a conductive layer and a grid-like structure of multiple shielding columns connected to the conductive layer to determine the effective communication range of the first front wireless signal end, the first rear wireless signal end, the second front wireless signal end, or the second rear wireless signal end transmitting the magnetic coupling wave.

13. The wireless communication serial connection system according to claim 12, characterized in that: The sheet-like structure shields a portion of the electric coupling wave emitted by the radiating portion; or, the grid-like structure shields a portion of the magnetic coupling wave emitted by the radiating portion.

14. An antenna module for use in a wireless communication serial system, characterized in that: The antenna module comprises: A first circuit board is provided with a first wireless signal terminal; and A second circuit board is disposed adjacent to the first circuit board, and the second circuit board is provided with a second wireless signal terminal; The first wireless signal end is adjacent to the second wireless signal end, and the first wireless signal end and the second wireless signal end respectively include: a radiating portion, disposed at an edge of each of the circuit boards, the radiating portion having a comb-shaped portion, wherein the comb-shaped portion emits an electric coupling wave to another radiating portion of the adjacent wireless signal end in a direction perpendicular to the normal of the circuit boards and toward the side of the first circuit board or the second circuit board according to a transmission signal; or the radiating portion has a loop antenna, wherein the loop antenna emits a magnetic coupling wave to another radiating portion of the adjacent first wireless signal end or the second wireless signal end in a direction perpendicular to the normal of the first circuit board or the second circuit board according to the transmission signal; and A signal isolation module limits an effective communication range of the first wireless signal end or the second wireless signal end transmitting the electric coupling wave or the magnetic coupling wave, and is basically located between the first wireless signal end on the first circuit board and the second wireless signal end on the second circuit board.

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