Communication device, battery management assembly, battery module and battery cluster

Abstract

The communication device comprises: two connectors, each connector comprising: an input terminal for receiving a first addressed signal and an output terminal for outputting a second addressed signal; a first switching unit connected with the input terminal; a second switching unit connected to the output terminal; a signal receiving pin of the microcontroller is connected with the first switch unit, and a signal output pin of the microcontroller is connected with the second switch unit; the power supply is respectively connected with the first switch unit and the second switch unit; the signal blocking unit is arranged between the input terminal and the first switch unit. Wherein the first switch unit is configured to: in response to a first addressing signal received by the input terminal, connect a signal receiving pin of the microcontroller to a ground terminal; the second switch unit is configured to: in response to a signal output pin of the microcontroller outputting a control signal to the second switch unit, connect the power supply to the output terminal; the signal blocking unit is configured to block electrical signal transmission between the two input terminals.

Description

[Technical field]

[0001] The present application relates to the technical field of electronic circuits, and in particular to a communication device, a battery management component, a battery module and a battery cluster. [Background technology]

[0002] In the battery management system, the orderly and reliable communication between the battery control component and the battery management component is to ensure the stable operation of the battery management system. In order to ensure the normal operation of the battery management system, the battery control component needs to address each battery management component to accurately identify and distinguish each battery management component, so as to monitor and manage each battery management component. [Summary of the invention]

[0003] The inventors of the present application discovered when developing communication technologies and products between battery management components of multiple battery modules that when addressing a battery management component, a typical addressing operation is for the battery control component to send an addressing signal to the first battery management component, and each battery management component confirms whether it has been addressed by detecting whether the addressing signal is received, and after completing the addressing operation, continues to provide an addressing signal to the next battery management component, thereby completing the addressing in sequence (such an addressing method may also be referred to as "sequential addressing").

[0004] In order to achieve the above-mentioned sequential addressing, the communication circuit interface of each battery management component needs to be set with two different interface types (an interface for receiving addressing signals and an interface for sending addressing signals), and adjacent battery management components are required to maintain a fixed interface connection relationship to ensure that the addressing signals are transmitted between each battery management component in a predetermined order.

[0005] Such a fixed interface connection relationship has caused great restrictions on the installation and layout of the communication harness and battery management components, brought a lot of inconvenience to the assembly and maintenance of the battery management system, and also limited the flexibility and versatility.

[0006] To this end, the inventor of the present application has developed a communication device. The communication device includes: two connectors, each connector includes: an input terminal for receiving a first addressing signal and an output terminal for outputting a second addressing signal; a first switch unit connected to the input terminal; a second switch unit connected to the output terminal; a microcontroller, a signal receiving pin of the microcontroller is connected to the first switch unit, and a signal output pin of the microcontroller is connected to the second switch unit; a power supply is connected to the first switch unit and the second switch unit respectively; a signal blocking unit is arranged between the input terminal and the first switch unit; wherein the first switch unit is configured to: connect the signal receiving pin of the microcontroller to the ground terminal in response to the input terminal receiving the first addressing signal; the second switch unit is configured to: output a control signal to the second switch unit in response to the signal output pin of the microcontroller, and the second switch unit connects the power supply to the output terminal; the signal blocking unit is configured to: block the transmission of electrical signals between the two input terminals.

[0007] The communication device is provided with input terminals and output terminals in each connector, so that when two communication devices are connected, there is no need to distinguish the types of connectors. The communication harness between two different communication devices can be connected to any connector in the communication device, eliminating the restriction of fixed interface connection relationship. Moreover, by providing a signal blocking unit in the communication device, the transmission of electrical signals between two input terminals in the same communication device is limited, ensuring that the addressing signal is transmitted one by one between multiple cascade-connected communication devices in a set order, and the addressing operation is successfully completed.

[0008] In combination with the first aspect, in one possible implementation, an input terminal of one connector is connected to an output terminal of a connector of another communication device through a communication harness, and an output terminal of one connector is connected to an input terminal of a connector of another communication device through the communication harness.

[0009] The terminal connection method of the above connector ensures that when the communication harness is installed and plugged in, there is a correct correspondence between the input terminal and the output terminal, avoiding communication failures caused by connection errors.

[0010] In combination with the first aspect, or any one of the above possible implementations of the first aspect, in another possible implementation, the two connectors include: a first connector and a second connector; wherein the position of the input terminal in the first connector corresponds to the position of the output terminal in the second connector, and the position of the output terminal in the first connector corresponds to the position of the input terminal in the second connector.

[0011] In combination with the first aspect, or any one of the above possible implementations of the first aspect, in another possible implementation, the signal blocking unit includes: a unidirectional conductive device; one end of the unidirectional conductive device is connected to the input terminal, and the other end of the unidirectional conductive device is connected to the first switch unit; the unidirectional conductive device is configured to: control the electrical signal to be transmitted unidirectionally from the input terminal to the first switch unit; wherein the unidirectional conductive device includes: a diode, a transistor and a photocoupler.

[0012] The unidirectional transmission control implemented by the unidirectional conductive device effectively reduces the risk of electrical signals from one input terminal to another input terminal through the internal circuit, ensuring the independence of each connector. The signal blocking unit implemented by the unidirectional conductive device is simple to use and highly reliable, which is conducive to improving the stability and safety of the communication device.

[0013] In combination with the first aspect, or any one of the above possible implementations of the first aspect, in another possible implementation, the first switch unit includes: a first resistor, a second resistor, a third resistor and a first switch; one end of the first resistor is connected to the power supply, and the other end of the first resistor is connected to the first end of the first switch; one end of the second resistor is connected to the second end of the first switch, and the other end of the second resistor is connected to the control end of the first switch; one end of the third resistor is connected to the input terminal through the signal blocking unit, and the other end of the third resistor is connected to the control end of the switch; the first end of the first switch is also connected to the signal receiving pin of the microcontroller, and the second end of the first switch is also connected to the ground end; the first switch is configured as: in response to the input terminal receiving the first addressing signal, the first switch is turned on to connect the signal receiving pin of the microcontroller to the ground end.

[0014] The first switch unit converts the external first addressing signal into a low-level signal for safety detection by the microcontroller, and provides an overvoltage protection function, effectively reducing the risk of the first addressing signal damaging the microcontroller. Moreover, the first switch unit also has the characteristics of fast response speed and low power consumption, which improves the real-time performance and reliability of addressing signal detection.

[0015] In combination with the first aspect, or any one of the above possible implementations of the first aspect, in another possible implementation, the second switch unit includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second switch, and a third switch; one end of the fourth resistor is connected to the output terminal, and the other end of the fourth resistor is connected to the first end of the second switch; one end of the fifth resistor is respectively connected to the second end of the second switch and the power supply, and the other end of the fifth resistor is connected to the control end of the second switch; the second end of the second switch is connected to the power supply; one end of the sixth resistor is connected to the control end of the second switch, and the The other end of the sixth resistor is connected to the first end of the third switch; one end of the seventh resistor is connected to the control end of the third switch, and the other end of the seventh resistor is connected to the second end of the third switch; the second end of the third switch is connected to the ground end; one end of the eighth resistor is connected to the signal output pin of the microcontroller, and the other end of the eighth resistor is respectively connected to the control end of the third switch and one end of the seventh resistor; the second switch and the third switch are configured as follows: in response to the signal output pin of the microcontroller outputting a control signal to the second switch, the second switch and the third switch are turned on to connect the power supply to the output terminal.

[0016] The second switch unit realizes the reliable conversion of the control signal output by the microcontroller into the second addressing signal. The two-stage switch design adopted by the second switch unit has good switching characteristics, driving capability and transient response capability, thereby effectively suppressing glitches and oscillations during signal switching. Moreover, the second switch unit also provides current limiting and protection functions, ensuring the reliable operation of the circuit while ensuring the driving capability.

[0017] In a second aspect, an embodiment of the present application provides a battery management component. The battery management component includes: a substrate, and the communication device as described above, wherein the communication device is disposed on the substrate.

[0018] In a third aspect, an embodiment of the present application provides a battery module, which includes: a battery cell module, and the battery management component as described above, wherein the battery management component is connected to the battery cell module.

[0019] The beneficial effects of the related devices provided in the second and third aspects of this application can refer to the beneficial effects of the technical solution of the first aspect, and will not be repeated here.

[0020] In a fourth aspect, an embodiment of the present application provides a battery cluster. The battery cluster includes: a battery control component; at least two battery modules as described above; and a communication harness; wherein the connectors between the battery management components of two adjacent battery modules are connected via the communication harness; and the connector of the battery management component of one of the battery modules is connected to the battery control component via the communication harness.

[0021] In the above-mentioned battery cluster, the restriction on the fixed interface connection relationship of different battery management components is lifted, thereby effectively reducing the wiring difficulty of the communication harness and facilitating the assembly and assembly of the battery cluster.

[0022] In combination with the fourth aspect, in a possible implementation, the battery management component of the battery module includes: a first connector and a second connector; the battery cluster includes at least two chain connection groups, each of the chain connection groups includes at least one of the battery modules; between two adjacent chain connection groups, the first connector of the battery management component in one of the chain connection groups is connected to the first connector of the battery management component in another of the chain connection groups through the communication harness; or the second connector of the battery management component in one of the chain connection groups is connected to the second connector of the battery management component in another of the chain connection groups through the communication harness.

[0023] In combination with the fourth aspect, or any one of the above-mentioned possible implementations of the fourth aspect, in another possible implementation, at least two chain connection groups include a first chain connection group, which is connected to the battery control component; the first chain connection group includes at least two battery modules, and in the first chain connection group, the first connector of one of the battery management components is connected to the second connector of an adjacent battery management component through the communication harness.

[0024] The connector setting method used in the above-mentioned battery cluster allows a simpler connection scheme to be selected between adjacent chain connection groups according to the actual installation position, thereby improving the flexibility and adaptability of wiring and effectively shortening the length and difficulty of the communication harness.

Brief Description of the Drawings

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 is a schematic diagram of a typical battery management system;

[0027] Figure 2A schematic diagram of a battery management system provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the connection of three battery management components provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the connection of three battery management components provided in an embodiment of the present application, showing a situation where a signal blocking unit is provided;

[0030] Figure 5 A schematic diagram of a communication device provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of two communication devices provided in an embodiment of the present application being connected via a communication harness;

[0032] Figure 7 A schematic diagram of a communication device provided in an embodiment of the present application, showing a situation where a unidirectional conducting device is provided;

[0033] Figure 8 A circuit schematic diagram of a first switch unit provided in an embodiment of the present application;

[0034] Fig. 9 A circuit schematic diagram of a second switch unit provided in an embodiment of the present application;

[0035] Fig.10 A schematic diagram of a battery management component provided in an embodiment of the present application;

[0036] Fig.11 A schematic diagram of a battery module provided in an embodiment of the present application;

[0037] Fig.12 A schematic diagram of a battery cluster provided in an embodiment of the present application;

[0038] Fig.13 The schematic diagram of the battery cluster provided in the embodiment of the present application shows a situation including a first chain-connected group and a second chain-connected group. [Specific implementation method]

[0039] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time, or it may mean that the two elements are interactively connected through signals. When an element is considered to be "coupled" / "coupled to" another element, it may be directly coupled to the other element or there may be an intermediate element at the same time, or it may mean that the two elements interact through signals.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0042] The Battery Management Unit (BMU) is a dedicated management device for the battery module, which is used to collect data such as the voltage and temperature of the battery module to monitor the battery module in real time.

[0043] The Battery Control Unit (BCU) is the control unit of the entire battery management system. It implements global control, safety supervision and strategy management of multiple battery modules by exchanging data with various battery management components.

[0044] Figure 1 This is a schematic diagram of the layout of a typical battery management system. Figure 1 As shown, multiple battery management components BMU are divided into multiple groups, and each group of battery management components BMU is along Figure 1 The two adjacent battery management units BMU are placed in order along the Figure 1 The y directions are shown spaced apart.

[0045] Each battery management unit BMU includes an upstream connector C1 for receiving an addressing signal and a downstream connector C2 for sending an addressing signal.

[0046] like Figure 1 As shown, the multiple battery management components BMU need to strictly follow the way that the downlink connector C2 of one battery management component BMU is connected to the uplink connector C1 of another battery management component BMU, and the communication between each battery management component BMU is established in sequence to form a complete cascade connection. Among the multiple cascade-connected battery management components BMU, the uplink connector C1 of the first battery management component BMU is connected to the communication interface of the battery control component BCU.

[0047] In the process of sequential addressing, after the first battery management unit BMU receives the initial addressing signal, it performs addressing, for example, addresses itself as 1, and transmits the addressing signal to the next battery management unit BMU through its own downstream connector C2, so that the next battery management unit BMU completes addressing. Thus, by transmitting the addressing signal one by one in the cascaded multiple battery management units BMU, the battery management units BMU complete addressing in sequence, forming their own independent address identifiers.

[0048] Among the multiple battery management units BMU connected in cascade, it is strictly required that the downstream connector C2 of one battery management unit BMU establishes a connection with the upstream connector C1 of the adjacent battery management unit BMU (hereinafter referred to as a fixed interface connection mode).

[0049] Due to the limitation of the layout position of the battery management unit BMU, such a fixed interface connection method will cause the length of the communication harness required between some battery management units BMU to be significantly increased (for example, Figure 1 Communication harness 301 in the apparatus).

[0050] In addition, such a fixed interface connection method also requires appropriate differentiation and fool-proof design of the interfaces of the upstream connector C1 and the downstream connector C2 to avoid the problem of incorrect plugging during assembly.

[0051] In order to break through the fixed interface connection mode, the applicant has developed and designed to change the upstream connector C1 and the downstream connector C2 into the same type of universal connector. The universal connector C3 has the ability to receive and send addressing signals at the same time, and serves as both the upstream connector C1 and the downstream connector C2. For example, Figure 2 As shown, each battery management unit BMU is provided with two universal connectors C3.

[0052] When each battery management unit BMU adopts the universal connector C3 setting, it breaks through the limitation of fixed interface connection mode, thus effectively simplifying the design difficulty of communication harness and providing better flexibility. Figure 2 As shown, multiple battery management components BMU adopt Figure 1 Avoid using the same location layout Figure 1 The communication harness 301 is very long, and another shorter communication harness 302 is used to realize the cascade connection between two battery management units BMUs spaced apart in direction y. Moreover, when the universal connector C3 is used, the problem of incorrect plugging is avoided, which brings convenience to assembly.

[0053] In the process of implementing the present application, the applicant discovered that: when set as a universal connector C3, since the universal connector C3 has the functions of receiving addressing signals and outputting addressing signals at the same time. Therefore, when multiple battery management components BMU are cascaded through a communication harness, the addressing signal will be provided to all odd-numbered battery management components BMU. This will cause each odd-numbered battery management component BMU to address itself as "1", and each even-numbered battery management component BMU to address itself as "2". Finally, the addressing operation fails, and the battery control component BCU cannot distinguish between different battery management components BMU.

[0054] the following Figure 3 Taking the three battery management components BMUn-1, BMUn and BMUn+1 as examples, the reason why the addressing signal is provided to the odd-numbered battery management components BMU at the same time is described in detail. Figure 3 As shown, the universal connector C3 has both an input terminal P1 for receiving an addressing signal and an output terminal P2 for outputting an addressing signal.

[0055] When the addressing signal is provided to the battery management component BMUn-1 through the input terminal P1 of one of the universal connectors C3 of the battery management component BMUn-1, it is also transmitted to the output terminal P2 of the battery management component BMUn through the input terminal P1 of another universal connector C3, and further transmitted to the input terminal P1 of the battery management component BMUn+1 through the output terminal P2 of the battery management component BMUn, so that the addressing signal is provided to the battery management component BMUn-1 and the battery management component BMUn+1 at the same time.

[0056] the following Figure 4 Taking the three battery management components BMUn-1, BMUn and BMUn+1 as examples, the reason why the signal blocking unit ensures that the addressing signal is transmitted in sequence between the cascade-connected battery management components is described in detail.

[0057] By setting a signal blocking unit between the two input terminals P1 to limit the transmission of electrical signals between the two input terminals P1, the smooth completion of sequential addressing is ensured. Figure 4 As shown, when a signal blocking unit is provided between two input terminals P1, the addressing signal is prevented from being directly transmitted from the other input terminal P1 to the input terminal P2 of the next battery management component BMUn, so that the addressing signal is transmitted sequentially among the cascade-connected battery management components BMU, and is not directly transmitted to all odd-numbered battery management components BMUn-1 and BMUn+1.

[0058] An embodiment of the present application provides a communication device, which is designed based on the above-mentioned inventive concept and is applied to a battery management unit BMU. Without distinguishing the type of connector, it ensures that the sequential addressing of multiple cascade-connected battery management units BMU is completed smoothly, thereby helping to reduce the wiring difficulty of the communication harness and facilitating the assembly and assembly of the overall battery management system.

[0059] It is understandable that, based on the same design concept, the communication device is further applied to other different types of electronic devices so that these electronic devices can easily achieve cascade connection and sequential addressing, thereby achieving the technical effect of reducing the wiring difficulty of the communication harness and facilitating assembly.

[0060] Figure 5 Schematic diagram of a communication device provided in an embodiment of the present application. Figure 5 As shown, the communication device 10 includes: two connectors 11 , a first switch unit 12 , a second switch unit 13 , a microcontroller 14 , a power supply 15 and a signal blocking unit 16 .

[0061] Each connector 11 includes an input terminal P1 for receiving a first addressing signal and an output terminal P2 for outputting a second addressing signal. In other words, each connector 11 is used for both receiving a first addressing signal and sending a second addressing signal. The connector types of the two connectors 11 are the same and are not differentiated.

[0062] In this application, the "first addressing signal" refers to an electrical signal received by a communication device indicating that addressing is required. The "second addressing signal" refers to an electrical signal sent by a communication device after addressing is completed to instruct the next communication device to address. The specific form of the addressing signal is not limited here.

[0063] The first switch unit 12 is a functional circuit connected to the input terminal P1. Both input terminals P1 are connected to the first switch unit 12. Because it is mainly composed of one or more controllable switches, it is called a switch unit.

[0064] The second switch unit 13 is a functional circuit connected to the output terminal P2. Both output terminals P2 are connected to the second switch unit 13, so that the second addressing signal is provided at the two output terminals P2 at the same time.

[0065] The microcontroller 14 has a plurality of different signal pins to implement one or more data processing and computing operations.

[0066] In the present application, the addressing operation is performed by the microcontroller 14, and the microcontroller has a signal receiving pin 141 and a signal output pin 142 related to the addressing operation. The signal receiving pin 141 is connected to the first switch unit 12 to determine whether the first addressing signal is received. The signal output pin 142 is connected to the second switch unit 13 to enable the output terminal P2 to output the second addressing signal.

[0067] The power supply 15 is a functional circuit that provides a preset voltage value and is connected to the first switch unit 12 and the second switch unit 13 respectively to provide the required stable DC voltage for the two switch units.

[0068] The signal blocking unit 16 is disposed between the input terminal P1 and the first switch unit 12. The signal blocking unit 16 plays a blocking role, so that the electrical signal input from one of the input terminals P1 cannot be output from the other input terminal P1.

[0069] In actual use, in response to the input terminal P1 receiving the first addressing signal, the first switch unit 12 is triggered to connect the signal receiving pin 141 of the microcontroller 14 to the ground terminal GND, whereby the microcontroller 14 determines that the first addressing signal has been received through the level signal change of the signal receiving pin 141, and performs addressing. After completing the addressing, the microcontroller 14 outputs a control signal to the second switch unit 13 at the signal output pin 142. In response to the control signal output from the signal output pin 142 of the microcontroller 14 to the second switch unit 13, the second switch unit 13 is triggered to connect the power supply 15 to the output terminal P2, so that the output terminal P2 generates a level signal change and outputs the second addressing signal. The second addressing signal is further transmitted to one of the connectors of the next communication device through the communication harness, and as the first addressing signal, the microcontroller 14 of the next communication device continues to address.

[0070] In addition, the signal blocking unit 16 arranged between the input terminal P1 and the first switch unit 12 blocks the transmission of electrical signals between the two input terminals P1, so that the first addressing signal received by one of the input terminals P1 cannot be output through the other input terminal P1, thereby preventing the first addressing signal from further passing through the communication wiring harness and being transmitted to the output terminal P2 of one of the connectors of the next communication device.

[0071] The communication device provides input terminals and output terminals in each connector, so that when two communication devices are connected, there is no need to distinguish the types of connectors. The communication harness between two different communication devices is connected to any connector in the communication device, eliminating the limitation of fixed interface connection relationship.

[0072] In addition, by setting a signal blocking unit in the communication device, the transmission of electrical signals between two input terminals in the same communication device is limited, ensuring that the addressing signal is transmitted one by one between multiple cascade-connected communication devices in a set order, thereby successfully completing the sequential addressing operation.

[0073] In some embodiments, in order to ensure that the first addressing signal and the second addressing signal are transmitted correctly, the input terminal P1 of one of the connectors is connected to the output terminal P2 of the connector of another communication device through the communication harness 300, and the output terminal P2 of one of the connectors is connected to the input terminal P1 of the connector of another communication device through the communication harness.

[0074] In other words, when the connectors of two different communication devices are connected through a communication harness, the input terminal P1 of the connector will establish a connection with the output terminal P2 of the other connector instead of being connected to the input terminal P1 of the other connector.

[0075] In some embodiments, the two connectors 11 provided on the same communication device include: a first connector 11 a and a second connector 11 b .

[0076] The input terminal P1 at the first connector 11a corresponds to the output terminal P2 at the second connector 11b, and the output terminal P2 at the first connector 11a corresponds to the input terminal P2 at the second connector 11b.

[0077] "Mutual correspondence" means that the terminals have the same terminal position or order in the connector. Figure 6 The first connector 11a and the second connector 11b are taken as examples for detailed description.

[0078] like Figure 6 As shown, for each communication device 10, the first connector 11a provided on the communication device 10 includes 8 terminals arranged in sequence. The second terminal is the input terminal P1, which is connected to the first switch unit 12, and the seventh terminal is the output terminal P2, which is connected to the second switch unit 13. The second connector 11b provided on the communication device 10 includes 8 terminals arranged in sequence, the seventh terminal is the input terminal P1, which is connected to the first switch unit 12, and the second terminal is the output terminal P2, which is connected to the second switch unit 13.

[0079] Therefore, when using the communication harness 300 to connect the two aforementioned communication devices 10, when the two ends of the communication harness 300 are respectively connected to the first connector 11a of one of the communication devices 10 and the second connector 11b of the other communication device, the interface of the communication harness 300 can ensure that the input terminal P1 of one of the communication devices is connected to the output terminal P2 of the other communication device by forward insertion.

[0080] Please continue reading Figure 6 When the first connector 11a (or the second connector 11b) is connected to both ends of the communication harness 300, the interface of the communication harness 300 adopts a reverse insertion method, and the harness is twisted to ensure that the input terminal P1 of one communication device is connected to the output terminal P2 of the other communication device.

[0081] Specifically, various different methods are selected according to the actual needs to guide the communication harness to be inserted in the correct direction. For example, an appropriate foolproof structure is provided at the interface of one of the connectors, or the length of the communication harness is adjusted and set.

[0082] Alternatively, the connectors provided on the communication devices use exactly the same terminal arrangement order. For example, the two connectors provided on each communication device are both first connectors (or second connectors). In this way, it is ensured that in any two communication devices, both ends of the communication harness 300 are connected to the first connector 11a (or second connector 11b). At this time, by setting a suitable structure, the interface of the communication harness 300 is guided to be inserted in reverse, and the harness is twisted to ensure that the input terminal P1 of one of the communication devices is connected to the output terminal P2 of the other communication device.

[0083] In some embodiments, Figure 7 As shown, the signal blocking unit 16 includes: a unidirectional conductive device 161.

[0084] One end of the unidirectional conductive device 161 is connected to the input terminal P1 , and the other end of the unidirectional conductive device 161 is connected to the first switch unit 12 , so that the electrical signal can only be transmitted unidirectionally from the input terminal P1 to the first switch unit 12 .

[0085] Thus, by providing a corresponding unidirectional conductive device 161 between each input terminal P1 and the first switch unit 12, the signal blocking function required by the signal blocking unit 16 is realized. When one of the input terminals P1 receives the first addressing signal, the first addressing signal will be transmitted to the first switch unit 12, but will not be transmitted to the other input terminal P1.

[0086] The signal blocking unit implemented by the unidirectional conductive device has the characteristics of simple structure and high reliability, which is beneficial to improving the stability and security of the communication device.

[0087] Specifically, the unidirectional conductive device 161 is an electronic device that allows electrical signals to flow in a specified direction and blocks them in the opposite direction, including diodes, transistors, and photocouplers, etc. It is understandable that technicians can choose to use appropriate unidirectional conductive devices according to actual needs.

[0088] In some embodiments, Figure 8 As shown, the first switch unit 12 includes: a first resistor R1, a second resistor R2, a third resistor R3 and a first switch Q1.

[0089] One end of the first resistor R1 is connected to the power source 15, and the other end of the first resistor R1 is connected to the first end of the first switch Q1. One end of the second resistor R2 is connected to the second end of the first switch Q1, and the other end of the second resistor R2 is connected to the control end of the first switch Q1.

[0090] One end of the third resistor R3 is connected to the input terminal P1 through the signal blocking unit 16, and the other end of the third resistor R3 is connected to the control end of the first switch Q1. The first end of the first switch Q1 is also connected to the signal receiving pin 141 of the microcontroller 14, and the second end of the first switch Q1 is also connected to the ground terminal GND.

[0091] In actual use, the first addressing signal received by the input terminal P1 is provided to the control end of the first switch Q1 through the third resistor R3, thereby driving the first switch Q1 to be turned on. As the first switch Q1 is turned on, an electrical connection is established between the first end and the second end of the first switch Q1, and the signal receiving pin 141 of the microcontroller is connected to the ground terminal GND, and the level at the signal receiving pin 141 is pulled low, so that the microcontroller 14 determines that the first addressing signal is received and starts to perform the addressing operation.

[0092] When the input terminal P1 does not receive the first addressing signal, the first switch Q1 is in an off state, and the first end and the second end of the first switch Q1 are cut off. The signal receiving pin 141 of the microcontroller is connected to the power supply 15 through the first resistor R1 and remains in a high level state.

[0093] Specifically, the first switch Q1 is implemented by selecting a suitable type of electronic device according to actual needs. Figure 8 The first switch Q1 implemented by a transistor is shown in FIG.

[0094] like Figure 8As shown, the base of the transistor serves as the control terminal of the first switch Q1, and the collector and emitter of the transistor serve as the first terminal and the second terminal of the first switch Q1 respectively. The second resistor R2 cooperates with the transistor to provide a suitable bias for the transistor, helping to control the turn-on characteristics and switching speed of the transistor.

[0095] The first switch unit converts the external first addressing signal into a low-level signal for safety detection by the microcontroller, and provides an overvoltage protection function, effectively reducing the risk of the first addressing signal damaging the microcontroller. Moreover, the first switch unit also has the characteristics of fast response speed and low power consumption, which improves the real-time performance and reliability of addressing signal detection.

[0096] In other embodiments, in order to further improve the working performance and reliability of the first switch unit, please continue to refer to Figure 8 The first switch unit 12 further includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a first inductor L1.

[0097] One end of the first capacitor C1 is connected to one end of the second capacitor C2 , the other end of the first capacitor C1 is connected to one of the input terminals P1 , and the other end of the second capacitor C2 is connected to the ground terminal GND.

[0098] One end of the third capacitor C3 is connected to one end of the fourth capacitor C4 , the other end of the third capacitor C3 is connected to another input terminal P1 , and the other end of the fourth capacitor C4 is connected to the ground terminal GND.

[0099] One end of the first inductor L1 is connected to the signal blocking unit 16. The other end of the first inductor L1 is connected to the third resistor R3.

[0100] One end of the fifth capacitor C5 is connected to the control end of the first switch Q1, and the other end of the fifth capacitor C5 is connected to the second end of the first switch Q1. One end of the sixth capacitor C6 is connected to the signal receiving pin 141, and the other end of the sixth capacitor C6 is connected to the ground terminal GND.

[0101] For example, Figure 8 , a signal blocking unit 16 composed of a first diode D1 and a second diode D2 is shown. The cathode of the first diode D1 and the cathode of the second diode D2 are connected to form the output end of the signal blocking unit 16. The anodes of the first diode D1 and the second diode D2 are connected to the two input terminals P1 respectively.

[0102] In some embodiments, Fig. 9As shown, the second switch unit 13 includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a second switch Q2 and a third switch Q3.

[0103] One end of the fourth resistor R4 is connected to the output terminal P2, and the other end of the fourth resistor R4 is connected to the first end of the second switch Q2. One end of the fifth resistor R5 is connected to the second end of the second switch Q2 and the power source 15, respectively, and the other end of the fifth resistor R5 is connected to the control end of the second switch Q2. The second end of the second switch Q2 is connected to the power source 15.

[0104] One end of the sixth resistor R6 is connected to the control end of the second switch Q2, and the other end of the sixth resistor R6 is connected to the first end of the third switch Q3. One end of the seventh resistor R7 is connected to the control end of the third switch Q3, and the other end of the seventh resistor R7 is connected to the second end of the third switch Q3. The second end of the third switch Q3 is connected to the ground end GND.

[0105] One end of the eighth resistor R8 is connected to the signal output pin 142 of the microcontroller, and the other end of the eighth resistor R8 is respectively connected to the control end of the third switch Q3 and one end of the seventh resistor R7.

[0106] In actual use, the control signal output by the signal output pin 142 of the microcontroller is provided to the control end of the third switch Q3 through the eighth resistor R8, driving the third switch Q3 to be turned on. As the third switch Q3 is turned on, the control end of the second switch Q2 is connected to the ground end through the sixth resistor R6, so that the control end level of the second switch Q2 is pulled down, thereby turning on the second switch Q2.

[0107] When the second switch Q2 is turned on, the electrical connection between the first and second ends of the second switch Q2 is established, and the power source 15 is connected to the output terminal P2 through the fourth resistor R4, pulling up the level of the output terminal P2, thereby forming a second addressing signal.

[0108] When the signal output pin 142 does not output a control signal, the control end and the second end of the third switch Q3 are at substantially the same level, and the third switch Q3 is in an off state. When the third switch Q3 is in an off state, the control end of the second switch Q2 is connected to the power supply 15 through the fifth resistor R5, and the control end and the second end of the second switch Q2 are also at substantially the same level, and the second switch Q2 is in an off state. At this time, the output terminal P2 does not output the second addressing signal.

[0109] Specifically, the second switch Q2 and the third switch Q3 are implemented by selecting appropriate types of electronic devices according to actual needs. For example, Fig. 9 , the second switch Q2 and the third switch Q3 are respectively implemented by two transistors.

[0110] The base of one of the transistors is used as the control terminal of the second switch Q2, and the collector and emitter of the transistor are used as the first terminal and the second terminal of the second switch Q2 respectively. The fifth resistor R5 cooperates with the transistor to provide a suitable bias for the transistor, helping to control the turn-on characteristics and switching speed of the transistor.

[0111] The base of another transistor serves as the control terminal of the third switch Q3, and the collector and emitter of the transistor serve as the first terminal and the second terminal of the third switch Q3 respectively. The seventh resistor R7 cooperates with the transistor to provide a suitable bias for the transistor, helping to control the turn-on characteristics and switching speed of the transistor.

[0112] The secondary switch setting used in the second switch unit provides good driving capability, realizes the conversion of the control signal output by the microcontroller into the second addressing signal, and ensures that the sequential addressing operates reliably in the communication device.

[0113] In other embodiments, in order to further improve the working performance and reliability of the second switch unit, please continue to refer to Fig. 9 The second switch unit also includes: a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a third diode D3 and a second inductor L2.

[0114] One end of the seventh capacitor C7 is connected to one end of the eighth capacitor C8, the other end of the seventh capacitor C7 is connected to one of the output terminals P2, and the other end of the eighth capacitor C8 is connected to the ground terminal GND.

[0115] One end of the ninth capacitor C9 is connected to one end of the tenth capacitor C10 , the other end of the ninth capacitor C9 is connected to another output terminal P2 , and the other end of the tenth capacitor C10 is connected to the ground terminal GND.

[0116] The anode of the third diode D3 is connected to the second inductor L2, and the cathode of the third diode D3 is connected to the two output terminals P2. The third diode D3 is a unidirectional conduction device, so that the electrical signal can only flow from the second inductor L2 to the output terminal P2, but cannot return from the output terminal P2 to the second inductor L2.

[0117] The other end of the second inductor L2 is connected to the fourth resistor R4. One end of the eleventh capacitor C11 is connected to the control end of the third switch Q3, and the other end of the eleventh capacitor C11 is connected to the second end of the third switch Q3.

[0118] The electronic device added to the above-mentioned second switch unit effectively suppresses glitches and oscillations during the signal switching process, and also provides sufficient current limiting and protection functions, thereby improving the reliability of the second switch unit.

[0119] Based on the communication device provided in the above embodiment, the embodiment of the present application further provides a battery management component. Fig.10 A schematic diagram of a battery management component provided in an embodiment of the present application. Fig. 9 As shown, the battery management assembly 100 includes: a communication device 10 and a substrate 20 .

[0120] The communication device 10 is disposed on a substrate 20 and is carried by the substrate 20. The communication device 10 includes two connectors 11 located at predetermined positions of the substrate 20, respectively.

[0121] It is understandable that in order to meet the application requirements of the battery management component, other functional circuits or modules are also provided on the substrate 20. For example, Fig.10 As shown, a battery sampling terminal 30 is also provided on the substrate 20. The battery sampling terminal 30 is an interface that is connected to the corresponding battery module for communication and is used to collect one or more parameters (eg, voltage and temperature) in the battery module.

[0122] For example, Fig.10 The substrate 20 is roughly rectangular, and two connectors 11 are symmetrically arranged along the length direction of the rectangle, close to the long sides of the rectangle, and close to one side of the wide side of the rectangular substrate 2. The battery sampling terminal 30 is arranged at a position close to the other side of the wide side of the rectangular substrate 20.

[0123] Specifically, the specific shape and size of the substrate 20, and the specific position settings of the connector 11 and the battery sampling terminal 30 are adjusted according to the actual needs.

[0124] Based on the battery management component provided in the above embodiments, the embodiments of the present application further provide a battery module using the battery management component. Fig.11 A schematic diagram of a battery module provided in an embodiment of the present application. Fig.11 As shown, the battery module 1000 includes: a battery management component 100 and a corresponding battery cell module 200 .

[0125] The battery module 200 includes one or more battery cells, which are connected in series and / or in parallel to form an energy storage unit that stores a specific capacity of electrical energy in the form of chemical energy. The battery management component 100 is electrically connected to the battery module 200 to obtain and collect one or more parameters of the battery module 200 and monitor the operating status of the battery module 200.

[0126] Based on the battery module provided in the above embodiment, the embodiment of the present application further provides a battery cluster using the above battery module. Fig.12 A schematic diagram of a battery cluster provided in an embodiment of the present application.

[0127] like Fig.12 As shown, the battery cluster includes: a battery control unit BCU, at least two battery modules 1000 and a communication harness 300.

[0128] Among them, the connectors 11 of the battery management components 100 of two adjacent battery modules 1000 are connected through the communication harness 300, and the connector 11 of the battery management component 100 of one of the battery modules 1000 is connected to the battery control component BCU through the communication harness 300, so that a complete battery management system is formed between all the battery management components 100 and the battery control component BCU to realize the control of the battery cell module 200 in each battery module.

[0129] In some embodiments, Fig.13 As shown, the battery management component 100 of the battery module adopts the connector configuration of the above embodiment, including a first connector 11a and a second connector 11b.

[0130] Accordingly, according to the connection mode of the connector used, the battery cluster includes at least two chain connection groups. Each chain connection group includes at least one battery module. Between two adjacent chain connection groups, the connector of the battery management component in one chain connection group is connected to the connector of the battery management component in another chain connection group through the communication harness 300, and the connector is the same type of connector.

[0131] In other words, between two adjacent chain-connected groups, the first connector 11a of the battery management component in one chain-connected group is connected to the first connector 11a of the battery management component in another chain-connected group through a communication harness 300; or the second connector 11b of the battery management component in one chain-connected group is connected to the second connector 11b of the battery management component in another chain-connected group through a communication harness 300.

[0132] In some embodiments, the at least two chain connection groups further include a first chain connection group, wherein the first chain connection group is a chain connection group connected to a battery control unit BCU.

[0133] The first chain connection group includes at least two battery modules. In the first chain connection group, a first connector 11a of a battery management component is connected to a second connector 11b of an adjacent battery management component via a communication harness.

[0134] Specifically, the chain connection group also includes a case where there is only one battery module. In other words, the battery cluster includes a first chain connection group and other different chain connection groups. These chain connection groups include any number of battery modules. Different chain connection groups contain the same or different numbers of battery modules.

[0135] The following Fig.13 Taking the battery cluster shown in the figure as an example, the connection method of the chain connection group is described in detail. Fig.13 , a battery cluster includes a first chain-connected group G1 and a second chain-connected group G2.

[0136] The first chain connection group G1 and the second chain connection group G2 both include three battery modules. In the first chain connection group G1, the battery management components of the three battery modules are marked as 100a, 100b and 100c respectively. In the second chain connection group G2, the battery management components of the three battery modules are marked as 100d, 100e and 100f respectively.

[0137] like Fig.13 As shown, in the first chain connection group G1, the first connector 11a of the battery management component 100a is connected to the communication interface C of the battery control component BCU through the communication harness 300. The second connector 11b of the battery management component 100a is connected to the first connector 11a of the battery management component 100b through the communication harness 300. The second connector 11b of the battery management component 100b is connected to the first connector 11a of the battery management component 100c through the communication harness 300.

[0138] In the second chain connection group G2, the second connector 11b of the battery management component 100d is connected to the second connector 11b of the battery management component 100c in the first chain connection group G1 through the communication harness 300. The first connector 11a of the battery management component 100d is connected to the second connector 11b of the battery management component 100e through the communication harness 300. The first connector 11a of the battery management component 100e is connected to the second connector 11b of the battery management component 100f through the communication harness 300.

[0139] Thus, the cascade connection between all battery management components is completed. Based on the initial addressing signal provided by the communication interface C of the battery control unit BCU, the six battery management components can complete the sequential addressing in sequence.

[0140] In such a battery cluster, the restriction on the fixed connection relationship of the connectors of different battery management components is removed, thereby effectively reducing the wiring difficulty of the communication harness and facilitating the assembly and assembly of the battery cluster.

[0141] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication device, characterized in that: include: Two connectors, each connector comprising: an input terminal for receiving a first addressing signal and an output terminal for outputting a second addressing signal; A first switch unit connected to the input terminal; A second switch unit connected to the output terminal; A microcontroller, wherein a signal receiving pin of the microcontroller is connected to the first switch unit, and a signal output pin of the microcontroller is connected to the second switch unit; a power supply, connected to the first switch unit and the second switch unit respectively; A signal blocking unit, disposed between the input terminal and the first switch unit; Wherein, the first switch unit is configured to: connect the signal receiving pin of the microcontroller to the ground terminal in response to the input terminal receiving the first addressing signal; The second switch unit is configured to: in response to a signal output pin of the microcontroller outputting a control signal to the second switch unit, connect the power supply to the output terminal; The signal blocking unit is configured to block the transmission of electrical signals between the two input terminals.

2. The communication device according to claim 1, characterized in that An input terminal of one of the connectors is connected to an output terminal of a connector of another communication device through a communication harness, and An output terminal of one of the connectors is connected to an input terminal of a connector of another communication device through the communication harness.

3. The communication device according to claim 1 or 2, characterized in that: The two connectors include: a first connector and a second connector; The position of the input terminal in the first connector corresponds to the position of the output terminal in the second connector, and The position of the output terminal in the first connector corresponds to the position of the input terminal in the second connector.

4. The communication device according to any one of claims 1 to 3, characterized in that: The signal blocking unit includes: a unidirectional conductive device; One end of the unidirectional conductive device is connected to the input terminal, and the other end of the unidirectional conductive device is connected to the first switch unit; The unidirectional conductive device is configured to: control the electrical signal to be unidirectionally transmitted from the input terminal to the first switch unit; Wherein, the unidirectional conducting devices include: diodes, triodes and photoelectric couplers.

5. The communication device according to any one of claims 1 to 4, characterized in that: The first switch unit includes: a first resistor, a second resistor, a third resistor and a first switch; One end of the first resistor is connected to the power supply, and the other end of the first resistor is connected to the first end of the first switch; One end of the second resistor is connected to the second end of the first switch, and the other end of the second resistor is connected to the control end of the first switch; One end of the third resistor is connected to the input terminal through the signal blocking unit, and the other end of the third resistor is connected to the control end of the first switch; The first end of the first switch is also connected to the signal receiving pin of the microcontroller, and the second end of the first switch is also connected to the ground end; The first switch is configured to be turned on in response to the input terminal receiving the first addressing signal so as to connect the signal receiving pin of the microcontroller to the ground terminal.

6. The communication device according to any one of claims 1 to 5, characterized in that: The second switch unit includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second switch and a third switch; One end of the fourth resistor is connected to the output terminal, and the other end of the fourth resistor is connected to the first end of the second switch; One end of the fifth resistor is connected to the second end of the second switch and the power supply respectively, and the other end of the fifth resistor is connected to the control end of the second switch; The second end of the second switch is connected to the power supply; One end of the sixth resistor is connected to the control end of the second switch, and the other end of the sixth resistor is connected to the first end of the third switch; One end of the seventh resistor is connected to the control end of the third switch, and the other end of the seventh resistor is connected to the second end of the third switch; The second end of the third switch is connected to the ground end; One end of the eighth resistor is connected to the signal output pin of the microcontroller, and the other end of the eighth resistor is respectively connected to the control end of the third switch and one end of the seventh resistor; The second switch and the third switch are configured such that, in response to a signal output pin of the microcontroller outputting a control signal to the second switch, the second switch and the third switch are turned on to connect the power source to the output terminal.

7. A battery management component, characterized in that: include: substrate, and The communication device according to any one of claims 1 to 6, wherein the communication device is arranged on the substrate.

8. A battery module, characterized in that: include: Battery modules, and The battery management component as described in claim 7, wherein the battery management component is connected to the battery cell module.

9. A battery cluster, characterized in that: include: Battery control components; At least two battery modules according to claim 8; as well as Communication harness; Wherein, the connectors between the battery management components of two adjacent battery modules are connected via the communication harness; The connector of the battery management component of one of the battery modules is connected to the battery control component via the communication harness.

10. The battery cluster according to claim 9, characterized in that: The battery management component of the battery module includes: a first connector and a second connector; The battery cluster includes at least two chain-connected groups, each of which includes at least one battery module; Between two adjacent chain connection groups, the first connector of the battery management assembly in one chain connection group is connected to the first connector of the battery management assembly in another chain connection group through the communication harness; or The second connector of the battery management assembly in one of the chain-type connection groups is connected to the second connector of the battery management assembly in another of the chain-type connection groups through the communication harness.

11. The battery cluster according to claim 10, characterized in that: The at least two chain connection groups include a first chain connection group, wherein the first chain connection group is connected to the battery control assembly; The first chain connection group includes at least two battery modules. In the first chain connection group, the first connector of one battery management component is connected to the second connector of an adjacent battery management component through the communication harness.

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