Battery management system and electronic equipment

Abstract

The utility model discloses a battery management system and electronic equipment, the system comprises a battery cluster, a collector and a controller, the collector is respectively connected with the battery cluster and the controller, so that the controller obtains battery information of the battery cluster through the collector, and the battery information of the battery cluster is sent to the electronic equipment. The battery information comprises at least one of voltage, current and temperature; the battery cluster comprises at least two battery cells, the collector comprises a first collection unit and a second collection unit, the first collection unit is respectively connected with the battery cluster and the controller, and the second collection unit is respectively connected with the battery cluster and the controller. The first acquisition unit acquires the voltage, the current and the temperature of each battery cell, and the second acquisition unit acquires the total voltage, the total current and the temperature of at least two battery cells. The battery information is not required to be processed by other modules between the collector and the controller, and the controller directly performs logic processing on the battery information, so that the utilization rate of main control operation resources can be improved, and the device cost is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to battery technology, and relate to but are not limited to a battery management system and electronic equipment. Background Art

[0002] Generally speaking, the Battery Management System (BMS) is divided into three parts: the main control board, the slave control board and the signal acquisition harness. The slave control board is installed in the battery box and is divided into two parts: signal acquisition and signal processing and transmission communication. The slave control board is connected to the battery through the signal acquisition harness and is responsible for detecting the battery status, including voltage, temperature, current, remaining power and other information. After simple processing of the collected information, it is transmitted to the main control board via wired or wireless means. The main control board then performs detailed analysis and calculation on the received information and transmits the analysis results to the vehicle controller via wired or wireless means.

[0003] Normally, technicians will divide the signal acquisition and signal processing and transmission communication parts of the slave control board into two circuit boards. The first circuit board carries the circuit of the signal acquisition part and is set near the battery. The second circuit board carries the circuit of the signal processing and transmission communication part. The signal is transmitted between the first circuit board and the second circuit board through a transmission harness. The second circuit board is then connected to the main control board so that the main control board can perform logical judgment based on the processed signal. That is, the three-level architecture is composed of the first circuit board, the second circuit board and the main control board. However, with the iteration of technology, the resource processing capability of the main control board has gradually improved. Only allowing the main control board to perform logical judgment will make the resource processing capability of the main control board idle, and it will be impossible to further improve the computing efficiency of the battery management system. Utility Model Content

[0004] In view of this, the battery management system and electronic device provided in the embodiments of the present application can improve the utilization rate of the main control computing resources and reduce the device cost.

[0005] In a first aspect, embodiments of the present application provide a battery management system, the system comprising a battery cluster, a collector, and a controller, the collector being connected to the battery cluster and the controller, respectively, so that the controller obtains battery information of the battery cluster through the collector, the battery information including at least one of voltage, current, and temperature;

[0006] The battery cluster includes at least two battery cells, and the collector includes a first collection unit and a second collection unit. The first collection unit is connected to the battery cluster and the controller respectively, and the second collection unit is connected to the battery cluster and the controller respectively. The first collection unit collects the voltage, current and temperature of each battery cell, and the second collection unit collects the total voltage, total current and temperature of at least two battery cells.

[0007] In one embodiment, there are at least two battery clusters and at least two collectors, at least two battery clusters are connected to at least two collectors in a one-to-one correspondence, and the controller is respectively connected to at least two first collection units and at least two second collection units.

[0008] In one embodiment, the first acquisition unit is connected to the battery cluster and the second acquisition unit respectively, and the second acquisition unit is further connected to the battery cluster and the controller respectively. The battery information of the battery cluster collected by the first acquisition unit and the second acquisition unit is different.

[0009] In one embodiment, there are at least two battery clusters and at least two collectors, at least two battery clusters are connected to at least two collectors in a one-to-one correspondence, at least two second collection units of the at least two collectors are connected in series, and the controller is connected to a target collection unit, and the target collection unit is the second collection unit located at both ends of the at least two second collection units connected in series.

[0010] In one embodiment, the number of the battery clusters is at least two, and the collector includes at least two first collection units, at least two second collection units and a transmission unit. The at least two first collection units are connected to the at least two battery clusters in a one-to-one correspondence, and the at least two second collection units are connected to the at least two battery clusters in a one-to-one correspondence. The transmission unit is connected to the controller and the at least two first collection units respectively, and the at least two second collection units are also connected to the controller. The battery information of the battery clusters collected by the at least two first collection units and the at least two second collection units are different.

[0011] In one embodiment, the number of the battery clusters is at least four, the number of the collectors is at least two, at least two transmission units of at least two collectors are respectively connected to the controller, and at least four second collection units of at least two collectors are respectively connected to the controller.

[0012] In one embodiment, the controller includes at least two control chips, and the at least two control chips are respectively connected to the collector.

[0013] In one embodiment, the system further includes a transformer, which is connected to the battery cluster, the controller, and the collector respectively.

[0014] In a second aspect, an embodiment of the present application provides an electronic device, which includes the battery management system as described in the first aspect.

[0015] In the above-mentioned battery management system, the battery information of the battery cluster is acquired and transmitted to the controller through the collector. The battery information includes at least one of voltage, current and temperature. The controller receives and adjusts the electrical parameters of the battery cluster according to the battery information. Since no other modules are required between the collector and the controller to process the battery information, the controller directly performs logical processing on the battery information, which can improve the utilization rate of the main control computing resources and reduce device costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and, together with the specification, are used to illustrate the technical solutions of the present application.

[0017] Figure 1 A schematic diagram of the structure of the battery management system provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a collector provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of the battery management system provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of a collector provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the structure of the battery management system provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the structure of a collector provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the structure of the battery management system provided in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of the structure of the control module provided in an embodiment of the present application;

[0025] Figure 9 A schematic diagram of the structure of the battery management system provided in an embodiment of the present application;

[0026] Figure 10A A schematic diagram of the implementation structure of a battery management system provided in an embodiment of the present application;

[0027] Figure 10B A schematic diagram of the implementation structure of another battery management system provided in an embodiment of the present application;

[0028] Figure 10CA schematic diagram of the implementation structure of another battery management system provided in an embodiment of the present application;

[0029] Figure 11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0032] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0033] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0034] Figure 1 This is a schematic diagram of the structure of a battery management system provided in an embodiment of the present application. Figure 1 As shown, the battery management system may include a battery cluster 101, a controller 103 and a collector 102, wherein the collector 102 is connected to the battery cluster 101 and the controller 103 respectively, wherein:

[0035] The collector 102 is used to obtain and transmit battery information of the battery cluster 101 to the controller 103, where the battery information includes at least one of voltage, current and temperature;

[0036] The controller 103 is configured to receive battery information and adjust electrical parameters of the battery cluster 101 according to the battery information.

[0037] In some embodiments, the collector 102 may be disposed on a first circuit board, which is disposed near the battery cluster 101 , and the controller 103 may be disposed on a second circuit board. The first circuit board and the second circuit board may be connected via a wired or wireless connection. Specific configuration may be made by those skilled in the art based on actual conditions, and this application does not impose any restrictions thereon.

[0038] In some embodiments, the collector 102 may include a battery connection terminal, an acquisition circuit, and multiple acquisition lines. The multiple acquisition lines are connected to the battery connection terminal. When the battery management system is connected to the battery cluster 101, the battery cluster 101 will be connected to the battery connection terminal of the collector 102 to transmit the electrical signal of the battery cluster 101 to the acquisition circuit through the acquisition line for monitoring to obtain battery information. The number of acquisition lines can be determined according to the number of battery cells in the battery cluster 101.

[0039] In some embodiments, the collector 102 may include a monitoring unit for collecting the voltage and current of the battery cluster 101, thereby obtaining voltage and current data of the battery cluster 101 through the monitoring unit. In a specific implementation, the monitoring unit may also be connected to the battery cluster 101 via a fuse, thereby adding a fuse between the battery cluster 101 and the monitoring unit to prevent overvoltage or overcurrent. The collector 102 may also collect voltage and current parameters at the fuse to determine whether the fuse is blown.

[0040] In some embodiments, the collector 102 may include a temperature monitoring unit for acquiring temperature data of the battery cluster 101. In a specific implementation, the temperature monitoring unit may include a temperature sensor.

[0041] In some embodiments, the collector 102 may include an analog front end (AFE), which converts the electrical signal output by the battery cluster 101 into an analog-to-digital converter through an internal analog-to-digital converter, thereby sending the electrical parameters such as the voltage and current of the battery cluster 101 to the controller 103. Alternatively, when the battery cluster 101 includes multiple battery cells, the AFE converts the electrical signal output by each battery cell into an analog-to-digital converter through an internal analog-to-digital converter, thereby sending the electrical parameters such as the voltage and current of each battery cell to the controller 103.

[0042] In some embodiments, the controller 103 may include a first communication module, and the collector 102 may include a second communication module. The connection between the controller 103 and the collector 102 is achieved by connecting the first communication module and the second communication module. In order to achieve the connection and communication between the first communication module and the second communication module, the first communication module and the second communication module adopt the same communication means, such as the controller 103 local area network (CAN) bus, Bluetooth, wireless fidelity (WiFi) or Ethernet for Control Automation Technology (EtherCAT), etc., which is not limited in this application.

[0043] In some embodiments, the controller 103 may adjust the battery cluster 101 by reducing voltage, reducing current, increasing voltage or increasing current, etc., which is specifically configured by those skilled in the art according to actual conditions and is not limited in this application.

[0044] In other embodiments, if the battery cluster 101 includes at least two battery cells, the adjustment means of the battery cluster 101 by the above-mentioned controller 103 may also include voltage balancing and / or current balancing, so as to reduce the voltage difference or current difference between at least two battery cells. The specific control means for performing voltage balancing and / or current balancing adopt the commonly used technical means in the field and will not be repeated here.

[0045] Optionally, when adjusting the electrical parameters of the battery cluster 101 , the controller 103 may generate a control signal and send the control signal to the battery cluster 101 , so that the battery cluster 101 adjusts the electrical parameters according to the control signal.

[0046] Optionally, to omit the connection between the controller 103 and the battery cluster 101, the control signal may be first sent to the collector 102, which then sends the control signal to the battery cluster 101, so that the battery cluster 101 adjusts the electrical parameters according to the control signal.

[0047] In the battery management system described above, the collector 102 acquires and transmits battery information of the battery cluster 101 to the controller 103. The battery information includes at least one of voltage, current, and temperature. The controller 103 receives and adjusts the electrical parameters of the battery cluster 101 based on the battery information. Because no other modules are required between the collector 102 and the controller 103 to process the battery information, the controller 103 directly performs logical processing on the battery information. This improves the utilization of the main control computing resources and reduces device costs.

[0048] In some embodiments, such as Figure 2 As shown, the battery cluster 101 may include at least two battery cells, the battery information includes first sub-information and second sub-information, and the collector 102 includes a first collection unit 1021 and a second collection unit 1022. The first collection unit 1021 is connected to the battery cluster 101 and the controller 103, respectively, and the second collection unit 1022 is connected to the battery cluster 101 and the controller 103, respectively.

[0049] The first acquisition unit 1021 is configured to acquire and transmit first sub-information to the controller 103 , where the first sub-information includes at least one of the voltage of each battery cell, the current of each battery cell, and the temperature of each battery cell in the at least two battery cells;

[0050] The second acquisition unit 1022 is configured to acquire and transmit second sub-information to the controller 103 , where the second sub-information includes at least one of a total output voltage of at least two battery cells, a total output current of at least two battery cells, and a temperature of the battery cluster 101 ;

[0051] The controller 103 is used to generate a first control signal based on the first sub-information and / or the second sub-information when receiving the first sub-information and / or the second sub-information, where the first control signal is used to instruct adjustment of electrical parameters of at least two battery cells to achieve voltage balance and / or current balance.

[0052] The battery cell mentioned above includes the smallest unit for storing electrical energy, such as a battery cell.

[0053] It should be understood that a balancing branch and a detection branch may be included between the above-mentioned at least two battery cells. The detection branch is respectively connected to a single battery cell and the collector 102, and is used to output part of the electrical signal to the collector 102 so that the collector 102 obtains the voltage and current of each battery cell. The balancing branch is respectively connected to any two battery cells, and is used to transfer part of the power of one battery cell to another battery cell under the control of the battery cluster 101, thereby achieving voltage balancing and / or current balancing between any two battery cells.

[0054] Optionally, the above-mentioned first acquisition unit 1021 may include multiple first collectors, and the multiple first collectors are connected to at least two battery cells in a one-to-one correspondence, so that the multiple first collectors respectively collect the voltage, current and temperature of each battery cell, wherein each first collector may include a voltage and current monitoring unit and a temperature monitoring unit, and the voltage and current of the battery cell are collected through the voltage and current monitoring unit, and the temperature of the battery cell is collected through the temperature monitoring unit.

[0055] Optionally, the second acquisition unit 1022 may include a second collector, which is respectively connected to the positive electrode and the negative electrode of the battery cluster 101 to collect the total output voltage, the total output current and the temperature of the battery cluster 101. The second collector may include a voltage and current monitoring unit and a temperature monitoring unit. The total output voltage and the total output current of the battery cluster 101 are collected through the voltage and current monitoring unit, and the temperature of the battery cluster 101 is collected through the temperature monitoring unit.

[0056] It is understandable that by setting the first acquisition unit 1021 to directly transmit the acquired voltage, current, and temperature of each battery cell to the controller 103, and the second acquisition unit 1022 to directly transmit the acquired total voltage, total current, and temperature of at least two battery cells to the controller 103, the voltage, current, and temperature of each battery cell as well as the voltage, current, and temperature of the battery cluster 101 can be acquired separately.

[0057] In some embodiments, such as Figure 3 As shown, there are at least two battery clusters 101 and at least two collectors 102 . At least two battery clusters 101 are connected to at least two collectors 102 in a one-to-one correspondence. The controller 103 is connected to at least two first collection units 1021 and at least two second collection units 1022 .

[0058] During implementation, the controller 103 can directly adjust the electrical parameters of the battery cluster 101 according to the at least two first sub-information after receiving the at least two first sub-information transmitted by the at least two first acquisition units 1021, or the main control can directly adjust the electrical parameters of the battery cluster 101 according to the at least two second sub-information after receiving the at least two second sub-information transmitted by the at least two second acquisition units 1022. In this way, the controller 103 can directly adjust the battery cluster 101 in real time based on the information obtained after obtaining the at least two first sub-information and / or the at least two second sub-information respectively.

[0059] Optionally, the at least two battery clusters 101 may be connected in series or in parallel, which is determined by those skilled in the art according to actual conditions and is not limited in this application.

[0060] Optionally, the at least two collectors 102 and the controller 103 may communicate with each other via wired or wireless communication, such as a CAN bus, a serial peripheral interface (SPI) bus, or a wireless communication such as Bluetooth.

[0061] It is understandable that by arranging a one-to-one connection between at least two battery clusters 101 and at least two collectors 102 , the computational pressure of the collector 102 when collecting data from the at least two battery clusters 101 can be reduced.

[0062] In some embodiments, such as Figure 4 As shown, the battery cluster 101 includes at least two battery cells, the battery information includes first sub-information and second sub-information, and the collector 102 includes a first collection unit 1021 and a second collection unit 1022. The first collection unit 1021 is connected to the battery cluster 101 and the second collection unit 1022, respectively. The second collection unit 1022 is also connected to the battery cluster 101 and the controller 103, respectively.

[0063] The first acquisition unit 1021 is configured to acquire and transmit first sub-information to the second acquisition unit 1022 , where the first sub-information includes at least one of the voltage of each battery cell, the current of each battery cell, and the temperature of each battery cell in the at least two battery cells;

[0064] The second acquisition unit 1022 is configured to obtain second sub-information and the first sub-information, and transmit the first sub-information and the second sub-information to the controller 103 , wherein the second sub-information includes at least one of a total output voltage of at least two battery cells, a total output current of at least two battery cells, and a temperature of the battery cluster 101 ;

[0065] The controller 103 is used to generate a second control signal based on the first sub-information and the second sub-information when receiving the first sub-information and the second sub-information, and the second control signal is used to instruct to adjust the electrical parameters of at least two battery cells to achieve voltage balance and / or current balance.

[0066] Optionally, the second acquisition unit 1022 may start collecting the second sub-information after the second acquisition unit 1022 obtains the first sub-information, or may start synchronously with the first acquisition unit 1021 obtaining the first sub-information. However, the step of the second acquisition unit 1022 transmitting information to the controller 103 needs to start after the second acquisition unit 1022 obtains the first sub-information. The specific setting is made by those skilled in the art according to actual conditions, and this application does not impose any restrictions.

[0067] It can be understood that by transmitting the data collected by the first acquisition unit 1021 to the second acquisition unit 1022, the second acquisition unit 1022 can synchronously transmit the first sub-information and the second sub-information to the controller 103, so that the function of the second acquisition unit 1022 is more centralized, the wiring harness between the collector 102 and the controller 103 is reduced, and the cost is reduced.

[0068] In some embodiments, such as Figure 5As shown, there are at least two battery clusters 101 and at least two collectors 102. The at least two battery clusters 101 are connected to the at least two collectors 102 in a one-to-one correspondence. The at least two second collection units 1022 of the at least two collectors 102 are connected in series. The controller 103 is connected to a target collection unit. The target collection unit is the second collection unit 1022 located at both ends of the at least two second collection units 1022 connected in series.

[0069] Each of the at least two first acquisition units 1021 is configured to acquire and transmit target first sub-information of a corresponding target battery cluster 101 to a corresponding target second acquisition unit 1022 ;

[0070] Each of the at least two second acquisition units 1022 is configured to obtain target second sub-information and target first sub-information of a target battery cluster 101, and transmit the target second sub-information and target first sub-information to a second acquisition unit 1022 in a next order according to a preset transmission order, so that the second acquisition unit 1022 in the next order transmits the target information together, until the second acquisition unit 1022 in the last order transmits at least two first sub-information and at least two second sub-information of at least two battery clusters 101 to the controller 103, where the target information includes the target second sub-information, the target first sub-information, the first sub-information of the second acquisition unit 1022 in the next order, and the second sub-information of the second acquisition unit 1022 in the next order;

[0071] The controller 103 is configured to receive and generate a second control signal according to at least two first sub-information and at least two second sub-information.

[0072] During the implementation process, at least two collectors 102 are connected in series to form a linear network structure. The collector 102 of the first order in the transmission sequence will transmit its corresponding first sub-information and second sub-information to the collector 102 of the second order. After obtaining its corresponding first sub-information and second sub-information, the collector 102 of the second order transmits two first sub-information and two second sub-information to the collector 102 of the third order. After obtaining its corresponding first sub-information and second sub-information, the collector 102 of the third order transmits three first sub-information and two third sub-information to the collector 102 of the fourth order, and so on. The collector 102 of the last order will transmit at least two first sub-information and at least two second sub-information including its corresponding first sub-information and second sub-information to the controller 103.

[0073] Optionally, the above-mentioned transmission sequence may include a clockwise sequence or a counterclockwise sequence, specifically based on the connection sequence between the at least two second acquisition units 1022 and the controller 103 connected in series. For example, the at least two second acquisition units 1022 include acquisition unit A, acquisition unit B and acquisition unit C, and the acquisition unit A, acquisition unit B and acquisition unit C are connected in series in sequence. The acquisition unit A and the acquisition unit C are respectively connected to the controller 103, so the transmission sequence can be acquisition unit A, acquisition unit B and acquisition unit C, or acquisition unit C, acquisition unit B and acquisition unit A. The specific setting is made by those skilled in the art according to actual conditions, and this application does not impose any restrictions.

[0074] Optionally, the above-mentioned second control signal may include a module identifier, which is used to indicate the target battery cluster 101 on which parameter adjustment is to be performed among the at least two battery clusters 101. For example, the at least two battery clusters 101 include battery cluster A, battery cluster B and battery cluster C. 00 in the control signal represents battery cluster A, 01 represents battery cluster B, and 10 represents battery cluster C. When the controller 103 needs to perform parameter adjustment on which battery cluster 101, the corresponding module identifier can be written in the control signal to instruct the corresponding battery cluster 101 to perform parameter adjustment.

[0075] It is understandable that by setting the communication structure between at least two collectors 102 to a linear structure, the communication frequency between at least two collectors 102 and the controller 103 is reduced, thereby improving the transmission efficiency between at least two collectors 102 and the controller 103.

[0076] In some embodiments, such as Figure 6 As shown, the battery cluster 101 includes at least two battery cells, the battery information includes first sub-information and second sub-information, the number of battery clusters 101 is at least two, the collector 102 includes at least two first collection units 1021, at least two second collection units 1022 and a transmission unit 1023, the at least two first collection units 1021 are connected to the at least two battery clusters 101 in a one-to-one correspondence, the at least two second collection units 1022 are connected to the at least two battery clusters 101 in a one-to-one correspondence, the transmission unit 1023 is connected to the controller 103 and the at least two first collection units 1021, and the at least two second collection units 1022 are also connected to the controller 103, wherein:

[0077] Each of the at least two first acquisition units 1021 is configured to acquire and transmit first sub-information to the transmission unit 1023 , where the first sub-information includes at least one of a voltage of each battery cell, a current of each battery cell, and a temperature of each battery cell in at least two battery cells in a first target battery cluster 101 , where the first target battery cluster 101 is any one or more of the at least two battery clusters 101 ;

[0078] The transmission unit 1023 is configured to transmit the at least two first sub-information to the controller 103 upon receiving the at least two first sub-information of the at least two battery clusters 101 ;

[0079] Each of the at least two second acquisition units 1022 is configured to obtain second sub-information and transmit the second sub-information to the controller 103 , where the second sub-information includes at least one of a total output voltage of at least two battery cells in a second target battery cluster 101 , a total output current of at least two battery cells, and a temperature of the battery cluster 101 , where the second target battery cluster 101 is any one of the at least two battery clusters 101 ;

[0080] The controller 103 is configured to generate a third control signal based on the at least two first sub-information and the at least two second sub-information of at least two battery clusters 101 upon receiving the at least two first sub-information and the at least two second sub-information. The third control signal is configured to instruct adjustment of electrical parameters of at least two battery cells in a third target battery cluster 101 to achieve voltage balancing and / or current balancing. The third target battery cluster 101 includes the first target battery cluster 101 and / or the second target battery cluster 101.

[0081] The transmission unit 1023 may obtain all the first sub-information of at least two battery clusters 101 within a period of time and then send the obtained first sub-information to the controller 103. Alternatively, the transmission unit 1023 may send the obtained target first sub-information to the controller 103 at each moment. The target first sub-information may be the first sub-information of part or all of the battery clusters 101. The specific configuration is determined by those skilled in the art based on actual conditions and is not limited in this application.

[0082] Optionally, the transmission unit 1023 will pre-identify the transmission channel between at least two first acquisition units 1021, so as to distinguish different first acquisition units 1021. After obtaining the first sub-information transmitted by a first acquisition unit 1021, the first sub-information will be identified with the identifier corresponding to the first acquisition unit 1021. Therefore, after the transmission unit 1023 transmits at least two first sub-information to the controller 103, the controller 103 can distinguish the first sub-information collected by different first acquisition units 1021 according to the identifier. At the same time, if a first acquisition unit 1021 does not send the first sub-information to the transmission unit 1023, the transmission unit 1023 will assign specific content to the first sub-information corresponding to the first collector 102 and send it to the controller 103, so that the controller 103 knows that the first collector 102 has not output the first sub-information, prompting the technician to check.

[0083] In some embodiments, such as Figure 7As shown, the number of the battery clusters 101 is at least four, the number of the collectors 102 is at least two, the at least two transmission units 1023 of at least two collectors 102 are respectively connected to the controller 103, and the at least four second collection units 1022 of at least two collectors 102 are respectively connected to the controller 103.

[0084] It is understandable that by uniformly sending the at least two first sub-information of the at least two battery clusters 101 to the controller 103 through the transmission unit 1023 , the number of connection harnesses between the at least two battery clusters 101 and the controller 103 can be reduced.

[0085] In some embodiments, such as Figure 8 As shown, the controller 103 includes at least two control chips 1031, and the at least two control chips 1031 are respectively connected to the collector 102, wherein:

[0086] Each of the at least two control chips 1031 is configured to receive battery information;

[0087] In which, if an abnormality occurs during the process in which the main control chip 1031 receives and adjusts the electrical parameters of the battery cluster 101 according to the battery information, the main control chip 1031 controls the other control chips 1031 among the at least two control chips 1031 to adjust the electrical parameters of the battery cluster 101 according to the battery information. The main control chip 1031 is one of the at least two control chips 1031.

[0088] Optionally, the connection relationship between the above-mentioned at least two control chips 1031 can be that any two control chips 1031 are connected in pairs, or the target control chip is connected to other control chips respectively, and the target control chip is any control chip except the main control chip and other control chips.

[0089] Optionally, the main control chip can control other control chips to perform parameter adjustment by directly sending a control signal to other control chips, or by sending a control signal to a target control chip so that the target control chip controls other control chips to perform parameter adjustment. The specific setting is made by technical personnel in this field according to actual conditions, and this application does not impose any restrictions.

[0090] It can be understood that by setting up at least two control chips 1031 to receive battery information respectively, and when an abnormality occurs during the process of the main control chip among the at least two control chips 1031 adjusting the electrical parameters of the battery cluster 101, the other control chips are controlled to re-execute the adjustment of the electrical parameters of the battery cluster 101, ensuring that the battery management system can still work normally when the main control chip works abnormally.

[0091] In some embodiments, such as Figure 9 As shown, the above system further includes a transformer 104, which is connected to the battery cluster 101, the controller 103 and the collector 102 respectively, wherein:

[0092] The transformer 104 is used to convert the initial voltage output by the battery cluster 101 into a target voltage according to preset voltage transformation parameters, and output the target voltage;

[0093] The collector 102 is used to obtain a target voltage and transmit the target voltage to the controller 103 so that the controller 103 adjusts the transformation parameters of the transformer 104 according to the target voltage.

[0094] Optionally, the above-mentioned transformer 104 may include multiple transformer branches, different transformer branches have different transformation parameters. Under the control of the controller 103, the transformer 104 can switch to the corresponding transformer branch to perform transformation work and output the target voltage, thereby adjusting the transformation parameters in real time.

[0095] Optionally, since the total output voltage and total output current of the battery cluster 101 are already high, the target voltage can be collected by the second collection unit 1022 in the collector 102 , thereby improving the functional integration of the second collection unit 1022 .

[0096] In some embodiments, because the voltage output by transformer 104 is relatively high, for safety reasons, the transmission line connected to transformer 104 needs to be strictly insulated, such as by adding an insulation layer to the surface of the transmission line or adding an insulation resistor to the transmission line. However, if the insulation layer or insulation resistor of the transmission line is damaged, the high-voltage signal on the transmission line will be transmitted to the outside, causing the surface of the electronic device on which transformer 104 is installed to be filled with high-voltage signals. Once the human body comes into contact with the electronic device, it will be harmed by the high-voltage signal, causing personal injury. Therefore, collector 102 can also detect the pressure difference between the connection end of the transformer 104 and the housing of the electronic device through an insulation detection unit, and determine whether the pressure difference is within a preset threshold range to implement insulation detection of the transmission line.

[0097] It is understandable that by providing the transformer 104 in the battery management system, the output voltage range of the battery cluster 101 can be expanded, and the output voltage of the transformer 104 can be adjusted in real time according to the target voltage output by the transformer 104 .

[0098] The following describes an exemplary application of the embodiments of the present application in a practical application scenario.

[0099] Figure 10A This is a schematic diagram of the implementation structure of a battery management system provided in an embodiment of the present application. Figure 10AAs shown, the battery management system may include a battery cluster 101, a collector 102 and a controller 103. The number of battery clusters 101 and collectors 102 is at least two. Each collector 102 includes a first collection unit 1021 and a second collection unit 1022. At least two first collection units 1021 and at least two second collection units 1022 are connected to the controller 103 respectively. At least two collectors 102 are connected to at least two battery clusters 101 in a one-to-one correspondence. The controller 103 includes a first control chip 1031 and a second control chip 1032. The first control chip 1031 and the second control chip 1032 are connected to the controller 103. 1 are respectively connected to at least two collectors 102, and the first control chip 1031 and the second control chip 1031 are connected between each other. Each battery cluster 101 includes at least two battery cells connected in series. In this embodiment, the first collection unit 1021 is an AFE chip, and the second collection unit 1022 is an acquisition chip. The at least two AFE chips are respectively connected to the first control chip 1031 and the second control chip 1032 via an SPI bus, and the at least two acquisition chips are respectively connected to the first control chip 1031 and the second control chip 1032 via a variable-rate local area network bus (CANFD, Controller Area Network with Flexible Data rate).

[0100] During implementation, at least two first acquisition units 1021 respectively collect at least two first sub-information of at least two battery clusters 101, each first sub-information including the voltage, current and temperature of each battery cell in each battery cluster 101, and at least two second acquisition units 1022 respectively collect at least two second sub-information of at least two battery clusters 101, each second sub-information including the total voltage, total current and temperature of each battery cluster 101. At least two first acquisition units 1021 send at least two first sub-information messages to the first control chip 1031 and the second control chip 1031, respectively. At least two second acquisition units 1022 send at least two second sub-information messages to the first control chip 1031 and the second control chip 1031, respectively. The first control chip 1031 adjusts the electrical parameters of the target battery cluster 101 based on the at least two first sub-information messages and the at least two second sub-information messages. The target battery cluster 101 is part or all of the at least two battery clusters 101. If an abnormality occurs in the operation of the first control chip 1031, the first control chip 1031 controls the second control chip 1032 to adjust the parameters of the target battery cluster 101.

[0101] After the battery management system is placed in the electronic device, each second acquisition unit 1022 can also collect the voltage value at the shell of the electronic device and send the voltage value at the shell to the first control chip 1031 and the second control chip 1031. The first control chip 1031 will detect the insulation of the battery management system based on the voltage at the shell. If the voltage at the shell is not zero, the insulation of the battery management system is abnormal. If the voltage at the shell is zero, the insulation of the battery management system is normal.

[0102] Figure 10B This is a schematic diagram of the structure of another battery management system provided in an embodiment of the present application. Figure 10B As shown, the battery management system may include a battery cluster 101, a collector 102 and a controller 103. There are at least two battery clusters 101 and collectors 102. Each collector 102 includes a first collection unit 1021 and a second collection unit 1022. The at least two first collection units 1021 and the at least two second collection units 1022 are connected in a one-to-one correspondence. The at least two second collection units 1022 are also respectively connected to the controller 103. The at least two collectors 102 are connected in a one-to-one correspondence to the at least two battery clusters 101. The controller 103 includes a first control chip 1031 and a second control chip 1031. The first control chip 1031 and the second control chip 1032 are respectively connected to the at least two collectors 102. The first control chip 1031 and the second control chip 1031 are connected to each other. Each battery cluster 101 includes at least two battery cells connected in series. In this embodiment, the first collection unit 1021 is an AFE chip, and the second collection unit 1022 is a collection chip.

[0103] During implementation, at least two first acquisition units 1021 respectively collect at least two first sub-information of at least two battery clusters 101, each first sub-information including the voltage, current and temperature of each battery cell in each battery cluster 101, and at least two second acquisition units 1022 respectively collect at least two second sub-information of at least two battery clusters 101, each second sub-information including the total voltage, total current and temperature of each battery cluster 101. After acquiring the target first sub-information of the corresponding target battery cluster 101, each of the at least two first acquisition units 1021 transmits the target first sub-information to the corresponding target second acquisition unit 1022. After acquiring the target second sub-information and the target first sub-information of the target battery cluster 101, each of the at least two second acquisition units 1022 transmits the target second sub-information and the target first sub-information to the second acquisition unit 1022 in the next order according to the preset transmission order, so that the second acquisition unit 1022 in the next order transmits the target information together, until the second acquisition unit 1022 in the last order transmits the at least two first sub-information and the target first sub-information of at least two battery clusters 101. The two second sub-information are transmitted to the first control chip 1031 and the second control chip 1032. The target information includes the target second sub-information, the target first sub-information, the first sub-information of the second acquisition unit 1022 in the next order, and the second sub-information of the second acquisition unit 1022 in the next order. The first control chip 1031 adjusts the electrical parameters of the target battery cluster 101 based on the at least two first sub-information and the at least two second sub-information. The target battery cluster 101 is part or all of the battery clusters 101 in the at least two battery clusters 101. At the same time, if the first control chip 1031 encounters an abnormality during operation, the first control chip 1031 controls the second control chip 1032 to perform parameter adjustment on the target battery cluster 101.

[0104] Figure 10C This is a structural diagram of another battery management system provided in an embodiment of the present application. Figure 10CAs shown, the battery management system may include a battery cluster 101, a collector 102 and a controller 103. The number of battery clusters 101 and collectors 102 is at least two. Each collector 102 includes at least two first collection units 1021, at least two second collection units 1022 and a transmission unit 1023. The at least two first collection units 1021 are connected to the at least two battery clusters 101 in a one-to-one correspondence, and the at least two second collection units 1022 are connected to the at least two battery clusters 101 in a one-to-one correspondence. The transmission unit 1023 is respectively connected to the first control chip 1031, the second control chip 1032 and the at least two first collection units 1021, and the at least two second collection units 1022 are connected to the at least two battery clusters 101 in a one-to-one correspondence. The collection unit 1022 is also connected to the first control chip 1031 and the second control chip 1032 respectively, and the first control chip 1031 and the second control chip 1032 are connected to each other. Each battery cluster 101 includes at least two battery cells connected in series. In this embodiment, the first collection unit 1021 is an AFE chip, the second collection unit 1022 is an collection chip, and at least two transmission units 1023 are connected to the first control chip 1031 and the second control chip 1032 respectively via CANFD. At least two second collection units 1022 are connected to the first control chip 1031 and the second control chip 1032 respectively via CANFD. The transmission unit 1023 is a transmission unit.

[0105] During the implementation process, each of the at least two first acquisition units 1021 will acquire and transmit the first sub-information to the transmission unit 1023, where the first sub-information includes at least one of the voltage of each battery cell, the current of each battery cell, and the temperature of each battery cell in the at least two battery cells in the first target battery cluster 101. The first target battery cluster 101 is any one or more of the at least two battery clusters 101. The transmission unit 1023 will transmit the at least two first sub-information to the first control chip 1031 and the second control chip 1032 respectively upon receiving the at least two first sub-information of the at least two battery clusters 101. Each of the at least two second acquisition units 1022 will transmit the corresponding second sub-information to The first control chip 1031 and the second control chip 1032 have second sub-information including at least one of the total output voltage of at least two battery cells in a second target battery cluster 101, the total output current of at least two battery cells, and the temperature of the battery cluster 101. The second target battery cluster 101 is any one of the at least two battery clusters 101. The first control chip 1031 adjusts the electrical parameters of the target battery cluster 101 based on the at least two first sub-information and the at least two second sub-information. The target battery cluster 101 is part or all of the at least two battery clusters 101. If an abnormality occurs during operation of the first control chip 1031, the first control chip 1031 controls the second control chip 1032 to adjust the parameters of the target battery cluster 101.

[0106] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 11 As shown, the electronic device may include the battery management system described in any of the above embodiments. In some embodiments, the electronic device may be a vehicle.

[0107] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments. The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other. For the sake of brevity, they will not be repeated here.

[0108] The term "and / or" in this article is only a description of the association relationship between associated objects, indicating that there can be three relationships. For example, object A and / or object B can mean: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0109] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0110] The modules described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed across multiple network units; some or all of the modules may be selected according to actual needs to achieve the purpose of this embodiment.

[0111] In addition, all functional modules in the embodiments of the present application can be integrated into one processing unit, or each module can be a separate unit, or two or more modules can be integrated into one unit; the above-mentioned integrated modules can be implemented in the form of hardware or in the form of hardware plus software functional units.

[0112] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0113] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0114] The above is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A battery management system, characterized in that: The system includes a battery cluster, a collector, and a controller, wherein the collector is connected to the battery cluster and the controller respectively, so that the controller obtains battery information of the battery cluster through the collector, and the battery information includes at least one of voltage, current, and temperature; The battery cluster includes at least two battery cells, and the collector includes a first collection unit and a second collection unit. The first collection unit is connected to the battery cluster and the controller respectively, and the second collection unit is connected to the battery cluster and the controller respectively. The first collection unit collects the voltage, current and temperature of each battery cell, and the second collection unit collects the total voltage, total current and temperature of at least two battery cells.

2. The system according to claim 1, wherein There are at least two battery clusters and at least two collectors. The at least two battery clusters are connected to the at least two collectors in a one-to-one correspondence. The controller is respectively connected to the at least two first collection units and the at least two second collection units.

3. The system according to claim 1, wherein The first acquisition unit is connected to the battery cluster and the second acquisition unit respectively. The second acquisition unit is also connected to the battery cluster and the controller respectively. The battery information of the battery cluster acquired by the first acquisition unit and the second acquisition unit is different.

4. The system according to claim 3, wherein: There are at least two battery clusters and at least two collectors, the at least two battery clusters are connected to the at least two collectors in a one-to-one correspondence, the at least two second collection units of the at least two collectors are connected in series, the controller is connected to a target collection unit, and the target collection unit is the second collection unit located at both ends of the at least two second collection units connected in series.

5. The system according to claim 1, wherein: The number of the battery clusters is at least two, and the collector includes at least two first collection units, at least two second collection units, and a transmission unit. The at least two first collection units are connected to the at least two battery clusters in a one-to-one correspondence, and the at least two second collection units are connected to the at least two battery clusters in a one-to-one correspondence. The transmission unit is respectively connected to the controller and the at least two first collection units, and the at least two second collection units are also connected to the controller. The battery information of the battery clusters collected by the at least two first collection units and the at least two second collection units are different.

6. The system according to claim 5, wherein: The number of the battery clusters is at least four, the number of the collectors is at least two, at least two transmission units of at least two collectors are respectively connected to the controller, and at least four second collection units of at least two collectors are respectively connected to the controller.

7. The system according to any one of claims 1 to 6, characterized in that: The controller includes at least two control chips, and the at least two control chips are connected to the collectors respectively.

8. The system according to any one of claims 1 to 6, wherein: The system further includes a transformer, which is connected to the battery cluster, the controller and the collector respectively.

9. An electronic device, characterized in that: The electronic device includes the battery management system according to any one of claims 1-8.

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