Battery management system and method

Abstract

To provide a plan to reduce the number of isolators when a circuit is configured to use a module operating at a low voltage together in a case where a high voltage battery is used.SOLUTION: In a battery management system 100, an isolator 220 is disposed between a first processor 210 and a second processor 230, and the first processor and the second processor transmit and receive information via the isolator. The first processor transmits a monitoring request signal relative to a plurality of nodes connected to the battery to the second processor via the isolator, and the second processor controls a switch unit 240 in response to a monitoring request signal to acquire a voltage value corresponding to the node and transmits the acquired voltage value to the first processor via the isolator.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] In the present disclosure, a system and method for managing a battery using one or more processors are provided.

Background Art

[0002] When modules operating in different voltage regions are connected to each other, an isolator is used. Particularly, when a module operating in a high voltage region and a module operating in a low voltage region operate in conjunction with each other, an isolator is arranged at an appropriate position to block leakage current and enable operation as intended. However, in the case of an isolator, since its cost is high, it is preferable to reduce the number of isolators when configuring a product. Therefore, efforts have been continuously made to reduce the number of isolators used when modules operating in different voltage regions are interconnected. In particular, when a high voltage battery is used, a solution for reducing the number of isolators is required when configuring a circuit to commonly use modules operating at a low voltage.

[0003]

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure can provide a system and apparatus for managing a battery. Specifically, a battery management system and apparatus for performing battery management using a small number of isolators are provided. The battery management system can include a first processor, a second processor, an isolator, a sensor unit, a switch unit, etc. The isolator is the first ​​​​​​​​​​It can be placed between the first processor and the second processor.

[0005] The technical challenges to be solved are not limited to the technical challenges mentioned above, but are also the challenges of ordinary engineers. This can include a variety of other technical challenges, within the bounds of obviousness. [Means for solving the problem]

[0006] The battery management system relating to the first aspect is a first processor that operates in the low voltage region; high A second processor operating in the voltage domain; between the first processor and the second processor An isolator to be positioned; a sensor unit for sensing voltage to multiple nodes; and The first includes a switch unit disposed between the sensor unit and the second processor. The processor sends monitoring request signals to the plurality of nodes via the isolator. The information is transmitted to the second processor, and the second processor then receives the monitoring request. The switch unit is controlled according to the number to obtain voltage values ​​for the plurality of nodes, The second processor transmits the voltage value to the first processor via the isolator. It is possible.

[0007] Furthermore, the switch section includes a plurality of switches, and the sensor section includes the plurality of switches It can include multiple sensors that correspond to the switch.

[0008] Furthermore, the switch unit is controlled by the second processor, and the switch unit When it is turned on, current is connected to the sensor unit, and when the switch unit is turned off, The current connected to the sensor can be interrupted.

[0009] Furthermore, the plurality of nodes can include at least one of the nodes at both ends of the relay and both ends of the fuse.

[0010] Furthermore, the relay can transmit the power of the high voltage applied from the battery to at least one of the motor, the output terminal, and the display.

[0011] Furthermore, the ground level of the low voltage region and the ground level of the high voltage region are different from each other, the voltage used in the low voltage region is 12V or less, and the voltage used in the high voltage region may be 500V or less.

[0012] Furthermore, the first processor can be arranged on the first substrate, and the second processor can be arranged on the second substrate.

[0013] Furthermore, the first processor can provide information on the charging and discharging states of the battery.

[0014] A battery management method according to a second aspect includes a step in which a first processor operating in a low voltage region transmits a monitoring request signal for a plurality of nodes to a second processor operating in a high voltage region via an isolator; a step in which the second processor obtains voltage values for the plurality of nodes in response to the monitoring request signal; and a step in which the second processor transmits the voltage values to the first processor via the isolator.

[0015] A third aspect can provide a computer-readable non-temporary recording medium on which a program for realizing the method of the second aspect is recorded. ​​​​​​​​​​​​

Advantages of the Invention

[0016] The present disclosure can provide a system and method for managing a battery. Specifically 、by transmitting information using an isolator arranged between a first processor operating in a low voltage region and a second processor operating in a high voltage region 、a system for performing battery management is disclosed. The number of isolators required can be reduced by arranging them on the first processor and the second processor 。 。

Brief Description of the Drawings

[0017] [Figure 1] A drawing showing an example of a battery management system according to an embodiment operating with a battery and a BEM. [Figure 2] A block diagram showing an example of a battery management system according to an embodiment operating using a first processor and a second processor. [Figure 3] A block diagram showing an example of a battery management system according to an embodiment operating using a plurality of isolators. [Figure 4] A block diagram showing an example of a battery management system according to an embodiment operating in a low voltage region and a high voltage region. [Figure 5] A drawing showing an example of a battery management system according to an embodiment operating with a battery, a BEM, an ECU, etc. [Figure 6] A drawing for explaining an example of a plurality of nodes according to an embodiment. [Figure 7] A flowchart showing an example of a battery management system according to an embodiment operating using a first processor and a second processor.

Modes for Carrying Out the Invention

[0018] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0019] However, the technical concept of the present invention is not limited to the embodiments described, but is applicable to a variety of different forms. It can be embodied in the present invention, and within the scope of the technical concept of the present invention, among its components during the embodiment You can selectively combine or replace one or more of them.

[0020] Furthermore, the terms used in the embodiments of the present invention (including technical and scientific terms) are clearly and specifically Unless otherwise defined and described, this invention is not a matter of ordinary practice for a person with ordinary skill in the art to which this invention pertains. Terms that can be interpreted and understood, and are commonly used together with predefined terms, It should be possible to interpret its meaning by considering its contextual significance within the related technologies.

[0021] Furthermore, the terminology used in the embodiments of this invention is for illustrative purposes only and applies to this invention. This is not intended to limit the invention.

[0022] In this specification, the singular form can also include the plural form unless otherwise specified in the text, and “A and (and) When it says "at least one of B and C (or one or more)", the combination of A, B, and C is It can include one or more of all possible combinations.

[0023] Furthermore, in describing the components of the embodiments of the present invention, the first, second, A, B, (a) Terms such as (b) can be used. Such terms refer to one component of another component. This is to distinguish it from other things, and the terminology does not indicate the essence, order, or sequence of the relevant components. It is not limited to any one of these. Furthermore, one component may be 'linked', 'combined', or When it is stated that a component is 'connected', that component is directly 'connected' to another component. , not only when 'combined' or 'connected', but also when its component and another component If they are 'connected', 'joined', or 'linked' by yet another component in between It can also include that.

[0024] Furthermore, when formed or positioned "above" or "below" each component When written, "above" or "below" indicates that the two components are directly related to each other. Not only when there is contact, but also when one or more further components are formed between the two components. This also includes cases where it is positioned. Furthermore, it can be expressed as "above" or "below". In this case, based on one component, the meaning can include not only the upward direction but also the downward direction. ru.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0026] Figure 1 shows a battery management system 100 according to one embodiment, which controls the battery 110 and BE An example of operation with M(battery energy management)120. This is a diagram illustrating this.

[0027] The battery management system 100 according to one embodiment includes a battery 110 and a BEM 120 It can operate in conjunction with the battery 110. And the status of the BEM120 can be monitored. Specifically, the battery management system The stem 100 senses the voltage to multiple nodes connected to the battery 110. This allows for monitoring various states and outputting the monitored results. This is possible. For example, the battery management system 100 ensures that relays and fuses are functioning correctly. An alarm can be triggered if the action is not performed.

[0028] Figure 2 shows a battery management system 100 according to one embodiment, which includes a first processor 210 and This is a block diagram showing an example of operation using the second processor 230.

[0029] As shown in Figure 2, the battery management system 100 includes the first processor 210, and the i Includes a solar unit 220, a second processor 230, a switch unit 240, and a sensor unit 250. This is possible. The battery management system 100 according to one embodiment has a low voltage region 201 and a high voltage region. It can include a voltage region 202. The isolator 220 has a low voltage region 201 and a high voltage region. The pressure regions 202 can be connected.

[0030] However, in addition to the components shown in Figure 2, other general-purpose components are used for battery management. Persons with ordinary skill in the relevant art who know that Stem 100 may also contain Then it can be understood. For example, the battery management system 100 is the first process The system further includes memory (not shown) connected to the 210 or the second processor 230. This is possible. The term “memory” includes any electronic component capable of storing electronic information. It can be interpreted broadly as follows: The term memory refers to random access memory (RAM). , read-only memory (ROM), non-volatile random access memory (NVRAM), Programmable Read-Only Memory (PROM), Erase-Programmable Read-Only Memory (EPROM), electrically erasable PROM (EEPROM), flash memory Processor-readable media such as magnetic or optical data storage devices and registers. It can also refer to various types of bodies. First processor 210 and / or second processor The 230 can read information from memory or write information to memory. If so, the memory communicates electronically with the first processor 210 and / or the second processor 230. It is in a trust state. Integrated into the first processor 210 and / or the second processor 230. The memory is in electronic communication with the processor.

[0031] Furthermore, the memory is of the flash memory type. Hard disk type, multimedia card Micro-type (multimedia card micro type), card type Memory (e.g., SD or XD memory), RAM (Random Access Memory), ess Memory), SRAM (Static Random Access Me mory), ROM (Read-Only Memory), EEPROM (El Electrically Erasable Programmable Read-On ly Memory), PROM(Programmable Read-Only M Storage of at least one type of memory, magnetic memory, magnetic disk, or optical disk It can include media.

[0032] The first processor 210 and / or the second processor 230 according to one embodiment have a communication function This can be done. For example, the first processor 210 and / or the second processor 230 It communicates with external devices using Wi-Fi chips, Bluetooth chips, etc. It can then communicate with internal modules according to established protocols. The top and Bluetooth chip communicate using Wi-Fi and Bluetooth methods, respectively. Communication can be performed when using a Wi-Fi chip or Bluetooth chip. It first sends and receives various connection information such as the SSID and session key, and then uses this information to After establishing a communication connection using this technology, various types of information can be sent and received. The wireless communication chip is IEEE compliant. E, Zigbee, 3G (3rd Generation), 3GPP (3rd Gener ation Partnership Project), LTE (Long Term It can communicate according to various communication standards such as Evolution. The FC chip supports 135kHz, 13.56MHz, 433MHz, and 860~960MHz. Among various RF-ID frequency bands such as 2.45GHz, the 13.56MHz band was selected. It operates using the NFC (Near Field Communication) method, which utilizes the NFC network. It is possible. Furthermore, the first processor 210 and / or the second processor 230 are L IN (Local Interconnect Network) bus or LIN IN Communication can be conducted via Toughnees.

[0033] In one embodiment, the first processor 210 operates in the low-voltage region 201 and the second processor The 230 can operate in the high-voltage region 202. Furthermore, the first processor 210 An isolator 220 can be placed between the first and second processor 230. The isolator 220 exchanges information between the first processor 210 and the second processor 230. They can transmit to each other.

[0034] The low-voltage region 201 and the high-voltage region 202 can operate in different voltage ranges from each other. For example, the voltage used in the low-voltage region 201 is 0V to 12V, and in the high-voltage region 202... The voltage used may be between 0V and 500V. Specifically, it is included in the high-voltage region 202. The operating voltage range of the module may be 300V to 500V.

[0035] Furthermore, the ground level of the low-voltage region 201 and the ground level of the high-voltage region 202 These may be different from each other. The ground in the low-voltage region 201 and the ground in the high-voltage region 202 The grounds do not need to be electrically connected to each other. Ground in the low-voltage region 201 and high-voltage The ground in region 202 can be electrically isolated.

[0036] According to one embodiment, the first processor 210 is arranged on the first substrate, and the second processor 230 can be placed on the second board. Module operating in the low voltage region 201 The module that operates in the high-voltage region 202 is located on the first substrate and is located on the second substrate. Furthermore, the isolator 220 can be connected to the first substrate and / or the second substrate. It is arranged to electrically connect the first substrate and the second substrate while simultaneously electrically disconnecting them. Yes, it is possible. The isolator 220 can transmit information between the first substrate and the second substrate. It can do this, but it can also disconnect electrical connections other than those along a designated route. For example, an isolation The terminal 220 can interrupt leakage current between the first substrate and the second substrate.

[0037] Isolator 22 is positioned between the first processor 210 and the second processor 230. 0 means that information is transmitted between the first processor 210 and the second processor 230. Yes, it is possible. Also, the isolator 220 connects the first processor 210 and the second processor 230. It is possible to interrupt electrical connections other than the information transmitted between them. For example, an isolation The terminal 220 can block leakage current between the low-voltage region 201 and the high-voltage region 202. can.

[0038] In one embodiment, the first processor 210 sends monitoring request signals to multiple nodes. This can be transmitted to the second processor 230 via the isolator 220. In one embodiment, the second processor 230 responds to the monitoring request signal to the switch unit 2 Control 40 to obtain voltage values ​​for multiple nodes, and the obtained voltage values ​​are used in an isolator. -It can be transmitted to the first processor 210 via 220.

[0039] The sensor unit 250 according to one embodiment senses voltages to multiple nodes. This is possible. Furthermore, a switch unit 24 is placed between the sensor unit 250 and the second processor 230. 0 can be placed. The switch section 240 includes multiple switches and the sensor section The 250 can include multiple sensors that support multiple switches.

[0040] In one embodiment, the switch unit 240 is controlled by the second processor 230. It is possible. Furthermore, the switch unit 240 controls the current applied to the sensor unit 250. This is possible. For example, when the switch unit 240 is turned on, current is connected to the sensor unit 250. When the switch unit 240 is turned off, the current connected to the sensor unit 250 is interrupted. This is possible. Specifically, multiple switches connected to the switch unit 240 are turned on. In this case, current can be applied to each of the multiple sensors included in the sensor unit 250. Furthermore, when multiple switches connected to the switch unit 240 are turned off... In total, the current can be interrupted for each of the multiple sensors included in the sensor unit 250.

[0041] The plurality of nodes in one embodiment include at least the nodes at both ends of the relay and at both ends of the fuse. It may also include one. The relay according to one embodiment is a high voltage applied from the battery A module that transmits power to at least one of the motor, output terminal, and display. It can include. Furthermore, if a current or voltage exceeding a previously set value is applied to the fuse... It may include a module or element that interrupts the current. An example of the application to D will be described later in Figure 6.

[0042] In one embodiment, the first processor 210 receives information on the charging and discharging status of the battery. It can be provided. For example, the first processor 210 has a fully charged battery. In the event of a discharge, or in the event of a discharge state, a message indicating the respective situation can be output.

[0043] Referring to Figure 2, one isolator 220 connects the first processor 210 and the second processor By being positioned between the sensor 230 and the sensor unit 250, the number of sensors included in the sensor unit 250 is multiplied. It is a number, and even though the number of switches included in the switch section 240 is multiple, The battery management system 100 achieves battery management with a single isolator 220. It is possible.

[0044] Figure 3 shows a battery management system 100 according to one embodiment, with multiple isolators 320 This is a block diagram showing an example of operation using 340.

[0045] As shown in Figure 3, the battery management system 100 consists of the main MCU 310, the first A Isolator 320, second isolator 340, sensor unit 330, MUX 350 and A converter 360 may be included. The battery management system 100 according to one embodiment is It may include a low-voltage region 301 and a high-voltage region 302. It can operate in region 302. First isolator 320 and second isolator 3 40 can connect the low-voltage region 301 and the high-voltage region 302.

[0046] The second isolator 340 may include multiple isolators. The isolators are connected to multiple sensors included in the sensor unit 330. It is possible. Furthermore, the MUX350 is included in the sensor section 330 via multiple isolators. One of the multiple sensors can be electrically connected to the converter 360.

[0047] Converter 360 can perform analog-to-digital conversion. For example, The converter 360 converts the value received via the MUX350 (e.g., voltage value) into a digital value. It can be converted to [this]. Furthermore, the converter 360 receives via the MUX350. The value can be transmitted to the main MCU 310 via the first isolator 320.

[0048] The sensor unit 330 may include multiple sensors, and the multiple sensors may include multiple It can sense the voltage value relative to the code. Furthermore, it can be selected by the MUX350. The voltage values ​​sensed by the sensors on the line are measured by the second isolator 340 and M The voltage is applied to the converter 360 via the UX350, and the converter 360 receives the voltage. The value is converted into a digital signal and transmitted to the main MCU 310 via the first isolator 320. It can be sent.

[0049] The low-voltage region 301 and the high-voltage region 302 can be represented on different substrates. For example, the low-voltage region 301 is realized on the first substrate, and the high-voltage region 302 is realized on the second substrate. This can be realized in this way. In this case, the main MCU310 is placed on the first board, The sensor unit 330, MUX 350, and converter 360 are arranged on the second board. It is possible. Furthermore, the first isolator 320 and the second isolator 340 are located on the first substrate. The second substrate can be connected to it. According to the embodiment shown in Figure 3, battery management System 100 consists of a first isolator 320 and a second isolator 340, i.e., multiple It can include a number of isolators 320, 340. In particular, the second isolator 340 In this case, the number of isolations corresponds to the number of sensors included in the sensor unit 330. It can include a ter.

[0050] Figure 4 shows a battery management system 100 according to one embodiment, with a low voltage region 401 and a high voltage region This is a block diagram showing an example of operation in region 402.

[0051] As shown in Figure 4, the battery management system 100 consists of the main MCU 410 and HV This includes the MCU 430, isolator 420, sensor unit 450, and switch unit 440. This is possible. The battery management system 100 according to one embodiment has a low voltage region 401 and a high voltage region. It may include a voltage region 402 and operate in a low-voltage region 401 and a high-voltage region 402. Yes, it is possible. The isolator 420 connects the low-voltage region 401 and the high-voltage region 402. It is possible.

[0052] Figure 4 shows the main MCU 410, isolator 420, HV MCU 430, The switch unit 440 and the sensor unit 450 are each connected to the first processor 210 disclosed in Figure 2. , isolator 220, second processor 230, switch unit 240 and sensor unit 25 Since it can handle 0, you can refer to the contents of Figure 2.

[0053] The switch section 440 can include multiple (e.g., 13) MOSFETs. The MOSFET can operate as a switch and is controlled by the HV MCU430. It is possible.

[0054] Referring to Figure 4, the battery management system uses only one isolator 420. The M100 can operate. Furthermore, the HV MCU430 is analog-digital. It can perform a switching function. Therefore, the HV MCU430 has a switch section 4 The signal received via 40 (e.g., voltage values ​​for multiple nodes) is converted into a digital signal. This data can then be transmitted to the main MCU 410 via the isolator 420.

[0055] The low-voltage region 401 and the high-voltage region 402 can be implemented on different substrates. For example, the low-voltage region 401 is realized on the first substrate, and the high-voltage region 402 is realized on the second substrate. This can be realized in this way. In this case, the main MCU410 is placed on the first board, The sensor unit 450, the switch unit 440, and the HV MCU 430 are arranged on the second board. Furthermore, the isolator 420 can connect the first substrate and the second substrate. can.

[0056] Referring to Figure 4, the number of isolators used is reduced compared to Figure 3, so The cost of using solars can be reduced.

[0057] Figure 5 shows a battery management system 100 according to one embodiment, which includes a battery 510 and a BEM. 520, works together with ECU (electronic control unit) 530, etc. This is a drawing showing an example of how it can be made.

[0058] As shown in Figure 5, the battery management system 100 includes the first processor 590, and It may include a solar 560, a second processor 570, and a measuring unit 580. One embodiment The battery management system 100 includes a low-voltage region 550 and a high-voltage region 540. It can operate in both the low-voltage region (550) and the high-voltage region (540). (Isolator) -560 can connect the low-voltage region 550 and the high-voltage region 540.

[0059] Figure 5 shows the first processor 590, the isolator 560, and the second processor 5 70, the low-voltage region 550, and the high-voltage region 540 are the first processors disclosed in Figure 2, respectively. 210, isolator 220, second processor 230, low voltage region 201 and high voltage region Since it can correspond to region 202, you can refer to the contents of Figure 2.

[0060] Furthermore, the measuring unit 580 shown in Figure 5 includes one or more sensors and switches. This is possible. For example, the measuring unit 580 includes the sensor unit 250 and the switch shown in Figure 2. Since it includes part 240, you can refer to the contents of Figure 2.

[0061] The battery management system 100 is a battery 510, BEM (Battery En It operates in conjunction with the ECU530 (Energy Management) 520. It is possible.

[0062] Specifically, power to battery 510 is applied by BEM520, and included in BEM520 The voltage values ​​for multiple nodes are sensed by the measurement unit 580 and processed by the second processor 57 It can be transmitted to 0. The second processor 570 is sensed by the measurement unit 580. The voltage value can be transmitted to the first processor 590 via the isolator 560. For example, the second processor 570 checks the voltage value received from the measurement unit 580 in the field of the analog value. In addition, the analog voltage value is converted to a digital voltage value and transmitted to the first processor 590. can.

[0063] The first processor 590 can control the ECU 530. For example, the first processor The 590 controls the ECU 530 using information received from the second processor 570. It is possible.

[0064] The ECU530 can control electronic modules in vehicles and other devices. For example, heaters - Power supply, real-time clock, crash ENS control, CAN bus It can control signals and other things. Furthermore, the ECU530 receives from the first processor 590. It can be controlled via a transmitted control signal. For example, the first processor 590 is The battery status (e.g., charging, discharging, malfunction) is transmitted via signals received from the 2nd processor 570. The ECU530 can be requested to output an alarm indicating that an event has occurred.

[0065] Figure 6 is a diagram illustrating an example of a plurality of nodes 671 to 683 according to one embodiment. be.

[0066] Multiple nodes 671 through 683 may be included in section 690 of the BEM. Section 690 of the BEM contains multiple relays 641, 642, 643, 644 , 645, 646, 647, 651, 652, 653, multiple fuses 631, 632, 633, multiple resistors 661, 662, 663, multiple nodes 671, 672, 673, 6 Includes 74, 675, 676, 677, 678, 679, 680, 681, 682, and 683. It is possible to do so. Furthermore, a section 690 of the BEM has multiple output terminals 621, 6 It can be connected to terminals 22, 623, and 624. First output terminal 621, second output terminal 6 22. The third output terminal 623 and the fourth output terminal 624 can each perform different operations. For example, the first output terminal 621 supplies power to Aux, and the second output terminal 622 is on the front Power is applied to the traction motor, and the third output terminal 623 is connected to the rear traction motor. By applying power to the fourth output terminal 624, power can be applied to the DC charging port. ru.

[0067] Voltage is supplied to multiple nodes 671 to 683 via the power supplied from battery 610. It can be applied. Multiple nodes 671 to 683 in one embodiment are relay 64 1, 642, 643, 644, 645, 646, 647, 651, 652, 653 (both ends) and may include at least one of the nodes at both ends of fuses 631, 632, and 633. Relays 641, 642, 643, 644, 645, 646, 647 according to one embodiment, 651, 652, and 653 receive high-voltage power from battery 610 to the motor. The signal is transmitted to output terminals 621, 622, 623, 624 and to at least one of the displays. It can include modules. Furthermore, fuses 631, 632, and 633 are already set. When the above current or voltage is applied, it includes a module or element that interrupts the current. It is possible.

[0068] Figure 7 shows a battery management system 100 according to one embodiment, comprising a first processor and a second processor. This flowchart shows an example of how a losser works.

[0069] In step S710, the first processor 210 operating in the low-voltage region 201 has multiple noise The monitoring request signal for the device is transmitted via the isolator 220 in the high-voltage region 202. The data is transmitted to the second processor 230.

[0070] In one embodiment, the first processor 210 operates in the low-voltage region 201 and the second processor The 230 can operate in the high-voltage region 202. Furthermore, the first processor 210 An isolator 220 can be placed between the first and second processor 230. The isolator 220 exchanges information between the first processor 210 and the second processor 230. They can transmit to each other.

[0071] The low-voltage region 201 and the high-voltage region 202 can operate in different voltage ranges from each other. For example, the voltage used in the low-voltage region 201 is 0V to 12V, and in the high-voltage region 202... The voltage used may be between 0V and 500V. Specifically, it is included in the high-voltage region 202. The operating voltage range of the module may be 300V to 500V.

[0072] Isolator 22 is positioned between the first processor 210 and the second processor 230. 0 means that information is transmitted between the first processor 210 and the second processor 230. Yes, it is possible. Also, the isolator 220 connects the first processor 210 and the second processor 230. It is possible to interrupt electrical connections other than the information transmitted between them. For example, an isolation The terminal 220 can block leakage current between the low-voltage region 201 and the high-voltage region 202. can.

[0073] In one embodiment, the first processor 210 sends monitoring request signals to multiple nodes. This can be transmitted to the second processor 230 via the isolator 220.

[0074] Furthermore, in response to the monitoring request signal transmitted in step S710, step S72 At value 0, the second processor 230 obtains voltage values ​​for multiple nodes.

[0075] The second phase is accessed via one or more switches and one or more sensors operating in the high-voltage region 202. Rosser 230 can acquire voltage values ​​for multiple nodes, and the second processor The 230 can convert the acquired voltage value into a digital signal.

[0076] In step S730, the second processor 230 outputs a voltage value via the isolator 220. The signal is transmitted to the first processor 210. At this time, the signal transmitted via the isolator 220 The pressure value can be converted into a digital signal and transmitted.

[0077] In step S710, a monitoring request signal is sent to multiple nodes, Isolator 2 The signal 20 is transmitted to the second processor 230 and converted into a digital signal in step S730. Since the voltage value is transmitted to the first processor 210 via the isolator 220, one Battery management can be performed via the isolator 220.

[0078] Furthermore, the method in Figure 7 can be understood by referring to the contents described above in Figures 1 to 6. Cut.

[0079] On the other hand, the above method can be created with a program that can be executed on a computer, A general-purpose digital controller that operates the program using a recording medium readable by a data reader. It can be realized on a computer. Furthermore, the data structure used in the method described above is It can be recorded on a computer-readable recording medium by various means. The recording medium readable by the aforementioned computer is a magnetic storage medium (for example, ROM, RAM, USB, floppy disks, hard disks, etc.), optical reading media (for example) This includes storage media such as CD-ROMs and DVDs.

[0080] The embodiments of the present invention have been described above with reference to the attached drawings, but the technical field to which the present invention belongs A person with ordinary skill would know that the present invention can be transformed into another specific entity without altering its technical concept or essential features. It should be clear that it can be implemented in a specific form. Therefore, It must be understood that the examples described are illustrative in all respects and not limiting. It must be done.

Claims

1. A first processor operating in the low-voltage region; A second processor operating in the high-voltage region; An isolator positioned between the first processor and the second processor; A sensor unit that senses voltage across multiple nodes; and It includes a switch unit disposed between the sensor unit and the second processor, The switch unit is controlled by the second processor, When the switch unit is turned on, current is connected to the sensor unit. When the switch unit is turned off, the current connected to the sensor unit is interrupted. The aforementioned switch section includes a plurality of switches, The sensor unit includes a plurality of sensors corresponding to the plurality of switches, The second processor is a battery management system that independently controls each of the plurality of switches and simultaneously acquires voltage values ​​for the plurality of nodes sensed by sensors connected to current among the plurality of sensors via the switches that are turned on among the plurality of switches.

2. The battery management system according to claim 1, wherein each of the plurality of sensors corresponds to each of the plurality of nodes.

3. The first processor transmits a monitoring request signal to the plurality of nodes to the second processor via the isolator. The battery management system according to claim 1 or 2, wherein the second processor transmits the voltage value to the first processor via the isolator in response to the monitoring request signal.

4. The battery management system according to claim 3, wherein the second processor controls the switch unit in response to the monitoring request signal.

5. The battery management system according to any one of claims 1 to 4, wherein the plurality of nodes include at least one of the nodes at both ends of a relay and the nodes at both ends of a fuse.

6. The battery management system according to claim 5, wherein the relay transmits high-voltage power applied from the battery to at least one of the motor, output terminal, and display.

7. The battery management system according to any one of claims 1 to 6, wherein the ground level of the low-voltage region and the ground level of the high-voltage region are different from each other.

8. The voltage used in the aforementioned low-voltage region is 12V or less. The battery management system according to claim 7, wherein the voltage used in the aforementioned high-voltage region is 500V or less.

9. The first processor is placed on the first substrate, The battery management system according to any one of claims 1 to 8, wherein the second processor is disposed on the second substrate.

10. The battery management system according to any one of claims 1 to 9, wherein the first processor provides information on the charging and discharging state of the battery.

11. A first processor operating in a low-voltage region transmits monitoring request signals to multiple nodes via an isolator to a second processor operating in a high-voltage region; The second processor obtains voltage values ​​for the plurality of nodes from a sensor unit that senses voltages for the plurality of nodes in response to the monitoring request signal; and The second processor transmits the voltage value to the first processor via the isolator; A switch unit is arranged between the sensor unit and the second processor. When the switch unit is turned on, current is connected to the sensor unit. When the switch unit is turned off, the current connected to the sensor unit is interrupted. The aforementioned switch section includes a plurality of switches, The sensor unit includes a plurality of sensors corresponding to the plurality of switches, A battery management method comprising: the second processor independently controls each of the plurality of switches and simultaneously acquires voltage values ​​for the plurality of nodes sensed by the sensors to which current is connected among the plurality of sensors via the switches that are turned on among the plurality of switches.

12. The battery management method according to claim 11, wherein the ground level of the low-voltage region and the ground level of the high-voltage region are different from each other.

13. The first processor is arranged on the first substrate, The battery management method according to claim 11, wherein the second processor is arranged on the second substrate.

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