Energy storage battery controller and energy storage battery management system

Abstract

The utility model relates to the technical field of vehicle-mounted battery control, and discloses an energy storage battery controller and an energy storage battery management system, which comprise an acquisition module, a detection module, a control module, a communication module, a singlechip and a power management module. Wherein the acquisition module is respectively connected with the current measuring device, the relay and the insulation resistor; the detection module is respectively connected with the fast charging socket and the electronic equipment; the control module is connected with an external relay through a control interface; the communication module is respectively connected with the battery management unit, the vehicle control unit, the slave control module and the energy storage system; the single-chip microcomputer is connected with the acquisition module, the detection module, the control module and the communication module. The power management module is externally connected with a battery or a direct-current power supply and internally connected with the single-chip microcomputer. According to the utility model, the external functions of the energy storage battery controller are expanded by adopting the single-chip microcomputer to configure the external network circuit module, so that various application requirements can be flexibly expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted battery control, in particular to an energy storage battery controller and an energy storage battery management system. Background Art

[0002] Battery controllers are the main controllers for a new generation of energy storage battery management systems for standard battery modules. Applications include pure electric buses, battery-swappable heavy-duty trucks, high-voltage container energy storage, and high-voltage photovoltaic energy storage. Existing lithium-ion battery controllers can perform basic functions such as current detection, voltage detection, temperature detection, and charge and discharge management, but lack flexible application expansion capabilities. Utility Model Content

[0003] The purpose of the utility model is to provide an energy storage battery controller and an energy storage battery management system to solve the defect that the existing energy storage battery controller and battery management system do not have flexible application expansion capabilities.

[0004] The utility model is achieved through the following technical solutions:

[0005] In a first aspect, an energy storage battery controller is provided, comprising an acquisition module, a detection module, a control module, a communication module, a single-chip microcomputer, and a power management module. The acquisition module is connected to a current measuring device, a relay, and an insulation resistor; the detection module is connected to a fast-charging socket and an electronic device; the control module is connected to an external relay via a control interface; the communication module is connected to a battery management unit, a vehicle controller, a slave control module, and an energy storage system; the single-chip microcomputer is connected to the acquisition module, the detection module, the control module, and the communication module; and the power management module is connected to a battery or a DC power supply externally and to the single-chip microcomputer internally.

[0006] Furthermore, the current measuring device includes a shunt and a Hall current sensor; the relay includes a main negative relay, a main positive relay, a fast charging positive relay and a heating positive relay; the main positive relay includes a pre-charging relay; the electronic device includes a collision sensor, a high-voltage component, a car key and a charging gun; the external relay includes a main positive relay, a main negative relay, a fast charging relay, a slow charging relay, a heating relay, a BMU power supply relay, a fan relay, a pre-charging relay and two low-side drive relays; the energy storage system includes a charging pile and an all-in-one controller.

[0007] Furthermore, the acquisition module includes a current acquisition unit, a total voltage acquisition unit, and an insulation acquisition unit. The current acquisition unit is connected to the shunt and the Hall current sensor; the total voltage acquisition unit is respectively connected to the main negative relay, the main positive relay, the fast charging positive relay, and the heating positive relay; and the insulation acquisition unit is connected to the insulation resistor.

[0008] Furthermore, the detection module includes a temperature detection unit, a collision detection unit, an analog signal input detection unit, and a digital signal input detection unit. The temperature detection unit is connected to the fast charging socket; the collision detection unit is connected to the collision sensor; the analog signal input detection unit is connected to the charging gun; and the digital signal input detection unit is connected to the high-voltage component.

[0009] Furthermore, the control module includes a 10-way control interface; the 10-way control interface includes 8-way high-side smart switches and 2-way low-side smart switches.

[0010] Furthermore, the communication module includes an intranet communication module and an extranet communication module, wherein the intranet communication module is respectively connected to the battery management unit and the slave control module; and the extranet communication module is respectively connected to the vehicle controller and the energy storage system.

[0011] Furthermore, the intranet communication module includes an intranet CAN communication unit and a daisy chain communication unit; the intranet CAN communication unit is connected to the battery management unit, and the daisy chain communication unit is connected to the slave control module; the external network communication module includes a whole vehicle CAN communication unit, a charging CAN communication unit, an RS485 communication unit and a 2-way dry contact communication unit; the whole vehicle CAN communication unit is connected to the whole vehicle controller, the charging CAN communication unit is connected to the charging pile, and the RS485 communication unit and the 2-way dry contact communication unit are both connected to the energy storage system.

[0012] Furthermore, the single-chip microcomputer includes a total voltage detection unit, an insulation detection unit, a SOC detection unit, a current detection unit, a signal input detection unit, and a power supply detection unit. The total voltage detection unit is connected to the total voltage acquisition unit; the insulation detection unit is connected to the insulation acquisition unit; the SOC detection unit is connected to the current acquisition unit; the current detection unit is connected to the current acquisition unit; the signal input detection unit is connected to the external network communication module; and the power supply detection unit is connected to the power management module.

[0013] In a second aspect, an energy storage battery management system is provided, which has a built-in energy storage battery controller as provided in the first aspect above, as well as a sleep and wake-up module, a data recording module, a self-test module, a parameter setting module and a program upgrade module.

[0014] Compared with the existing technology, the utility model has the following advantages and beneficial effects: the peripheral functions of the energy storage battery controller are expanded by configuring the external network circuit module with a single-chip microcomputer, multi-channel communication of different protocols is realized through the communication module, different types of data are collected through the acquisition module, and power management function, sleep / wake-up function, data recording function, system self-test function, parameter setting function and program upgrade function are realized, etc., which meets the flexible expansion of various application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0016] Figure 1 This is a schematic diagram of the organizational structure of the internal functional modules and functional units of an energy storage battery controller provided by an embodiment of the present invention.

[0017] Figure 2 A schematic diagram of the connection relationship between an energy storage battery management system and external electrical equipment provided in an embodiment of the present utility model.

[0018] Markings and corresponding parts names in the accompanying drawings:

[0019] 1-Acquisition module, 2-Detection module, 3-Control module, 4-Communication module, 5-SCM, 6-Power management module, 7-Sleep and wake-up module, 8-Data recording module, 9-Self-test module, 10-Parameter setting module, 11-Program upgrade module, 101-Current acquisition unit, 102-Total voltage acquisition unit, 103-Insulation acquisition unit, 201-Temperature detection unit, 202-Collision detection unit, 203-Analog signal input detection unit, 204-Digital signal input detection unit, 401-Intranet communication module, 402-Extranet communication module, 501-Total voltage detection unit, 502-Insulation detection unit, 503-SOC detection unit, 504-Current detection unit, 505-Signal input detection unit, 506-Power supply detection unit. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0021] Embodiment: The first aspect of this embodiment provides an energy storage battery controller, which can be applied to pure electric buses, battery-swap heavy trucks, high-voltage container energy storage machines, high-voltage photovoltaic energy storage and other fields, and supports battery system management such as lithium iron phosphate batteries, lithium manganese batteries, ternary batteries and lithium titanate batteries.

[0022] like Figure 1 As shown, the energy storage battery controller provided in this embodiment utilizes a single-chip microcomputer 5 configured with peripheral circuit modules. The controller comprises an acquisition module 1, a detection module 2, a control module 3, a single-chip microcomputer 5, and a power management module 6. The single-chip microcomputer 5 complies with ISO 26262 functional safety ASIL-B level and is connected to the acquisition module 1, detection module 2, control module 3, and communication module 4. The power management module 6 is externally connected to a battery or DC power supply and internally connected to the single-chip microcomputer 5.

[0023] The following combination Figure 1 The functional modules of the energy storage battery controller and the connection relationship between each functional module and external devices are described in detail.

[0024] Corresponding to the above-mentioned functional modules, in general, the energy storage battery controller provided in this embodiment has detection function, control drive function, communication function, sleep and wake-up function, data recording function, system self-test function, parameter setting function and program upgrade function.

[0025] 1. Detection function

[0026] The detection functions are divided into total voltage detection, temperature detection, power supply detection, insulation detection, SOC detection, current detection, analog signal input detection and digital signal input detection.

[0027] (1) Total voltage detection, current detection and insulation detection

[0028] The total voltage detection function supports up to four channels of total voltage detection and supports the diagnosis of adhesion of the main negative relay, main positive relay (including the pre-charge relay), fast-charge positive relay, and heater positive relay. Current detection collects and detects current from a shunt or Hall current sensor, which can also meet energy accumulation needs. Insulation testing measures the insulation resistance of the battery system's DC bus to ground in accordance with the national standards GB-T18384.1 to 18384.3-2015, providing graded alarms.

[0029] First, the current acquisition function, voltage acquisition function and insulation acquisition function are realized through the acquisition module 1; then, the acquisition module 1 sends the acquired signal to the single-chip microcomputer 5; finally, the single-chip microcomputer 5 performs corresponding detection work according to the acquired data.

[0030] Correspondingly, the acquisition module 1 includes a current acquisition unit 101, a total voltage acquisition unit 102, and an insulation acquisition unit 103. The current acquisition unit 101 is connected to the shunt and the Hall current sensor; the total voltage acquisition unit 102 is respectively connected to the main negative relay, the main positive relay, the fast charging positive relay, and the heating positive relay; and the insulation acquisition unit 103 is connected to the insulation resistance of the battery system DC bus to the ground. The single-chip computer 5 includes a total voltage detection unit 501, a current detection unit 504, and an insulation detection unit 502. The total voltage detection unit 501 is connected to the total voltage acquisition unit 102; the insulation detection unit 502 is connected to the insulation acquisition unit 103; and the current detection unit 504 is connected to the current acquisition unit 101.

[0031] (2) Temperature detection, collision detection, analog signal input detection and digital signal input detection

[0032] The temperature detection function supports up to four external temperature channels, capable of detecting the positive and negative temperatures of the fast-charging socket (or the ambient temperature of the energy storage system). The collision detection function can detect signals collected by the collision sensor. Analog signal input detection supports dual-charger signal CC2 and A+ detection, as well as CC and CP signal detection. The digital signal input detection function supports up to six digital input channels (including two active-high channels, two PWM channels, and two GPIO channels), which can be used for high-voltage interlock detection and fire signal detection.

[0033] Correspondingly, the detection module 2 includes a temperature detection unit 201, a collision detection unit 202, an analog signal input detection unit 203, and a digital signal input detection unit 204. The temperature detection unit 201 is connected to the fast charging socket, the collision detection unit 202 is connected to the collision sensor, the analog signal input detection unit 203 is connected to the charging gun, and the digital signal input detection unit 204 is connected to the high-voltage component. Each functional unit of the inspection module performs corresponding detection work and sends its own detection results to the single-chip microcomputer 5.

[0034] (3) SOC detection

[0035] SOC detection, or the remaining battery charge status, samples the battery pack's charge and discharge current using a shunt or Hall effect current sensor. Current acquisition unit 101 in acquisition module 1 transmits the sampled current to microcontroller 5, which then measures and integrates the collected current in A / H, enabling SOC measurement and SOC fault level alarms. Correspondingly, microcontroller 5 also includes SOC detection unit 503, which is connected to current acquisition unit 101.

[0036] (4) Power supply detection

[0037] The power supply detection function can detect the voltage status of the system's power supply. The system power supply includes a 24V battery or DC power supply. The power management module 6 is externally connected to the 24V battery or DC power supply and internally connected to the microcontroller 5. Accordingly, the microcontroller 5 also includes a power supply detection unit 506, which is connected to the power management module 6.

[0038] 2. Control function

[0039] The energy storage battery controller's control function manages external relays, enabling intelligent control of the main positive relay, main negative relay, fast-charge relay, slow-charge relay, heater relay, BMU power supply relay, fan relay, pre-charge relay, and two low-side driver relays. It safely controls and manages the battery system's charge and discharge based on strategies provided by the battery manufacturer or vehicle, and generates alarms based on the communication bus protocol. Corresponding to each relay, control module 3 has 10 control interfaces, including eight high-side intelligent switches and two low-side intelligent switches.

[0040] 3. Communication function

[0041] Communication functions include three CAN channels, one daisy chain channel, one RS485 channel, and two small-signal dry contact channels. CAN communication corresponds to three high-speed CAN interfaces, which can communicate with the BMU (intranet), vehicle control unit (VCU), and charging station (or energy storage system PCS) according to specific needs. Daisy chain communication is used for communication with slave control modules at a rate of 2Mbps. RS485 communication is used for communication between different energy storage system PCSs or electricity meters. Two small-signal dry contact outputs (100V / 30mA) meet the passive communication requirements of different energy storage system PCSs (for external controller detection, alarms, or protection). Accordingly, communication module 4 includes an intranet communication module 401 and an external network communication module 402. Intranet communication module 401 connects to the battery management unit and slave control module 3, respectively; external network communication module 402 connects to the vehicle controller and energy storage system, respectively. Microcontroller 5 also includes a signal input detection unit 505 and a power supply detection unit 506. The signal input detection unit 505 is connected to the external network communication module 402 , and the power supply detection unit 506 is connected to the power management module 6 .

[0042] Furthermore, the intranet communication module 401 includes an intranet CAN communication unit and a daisy-chain communication unit; the intranet CAN communication unit is connected to the battery management unit, and the daisy-chain communication unit is connected to the slave control module. The external network communication module 402 includes a vehicle CAN communication unit, a charging CAN communication unit, an RS485 communication unit, and a two-way dry contact communication unit; the vehicle CAN communication unit is connected to the vehicle controller, the charging CAN communication unit is connected to the charging pile, and the RS485 communication unit and the two-way dry contact communication unit are both connected to the energy storage system.

[0043] 5. Data recording function

[0044] The data recording module 8 has 16Mb of data storage space, which can record historical data and fault data. The recorded data can be used for data analysis and fault analysis.

[0045] 6. Sleep and wake-up function

[0046] The sleep and wake-up module 7 supports a completely power-off mode (activated by the K15 key / DC charging pile A+ / VCU signal) and a low-power sleep mode (wake-up by the K15 key / DC charging pile A+ / VCU signal).

[0047] 7. System self-check function

[0048] The self-test module 9 implements the self-test of the energy storage battery management system (BMS). After the BMS is powered on, it tests components such as voltage, temperature, communication, clock, and memory to ensure that the BMS itself is working normally.

[0049] 8. Parameter setting function

[0050] The parameter setting module 10 can set parameters (such as relevant protection values) through the host computer interface according to customer requirements and battery characteristics.

[0051] 9. Program upgrade function

[0052] The program upgrade module 11 supports online system program upgrades and supports vehicle CAN or intranet CAN upgrade / debugging. The default communication baud rate is 250Kbps.

[0053] like Figure 2 As shown, the second aspect of this embodiment provides an energy storage battery management system, which has a built-in energy storage battery controller as provided in the first aspect above, as well as a sleep and wake-up module 7, a data recording module 8, a self-test module 9, a parameter setting module 10 and a program upgrade module 11.

[0054] It should be noted that the detection function, control drive function and communication function involved in the energy storage battery controller provided in the first aspect, as well as the sleep and wake-up function, data recording function, system self-test function, parameter setting function and program upgrade function involved in the energy storage battery management system provided in the second aspect, can all be implemented with reference to the existing technology.

[0055] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An energy storage battery controller, characterized in that: include An acquisition module (1), the acquisition module (1) being connected to a current measuring device, a relay, and an insulation resistor respectively; A detection module (2), the detection module (2) being connected to the fast charging socket and the electronic device respectively; A control module (3), the control module (3) being connected to an external relay via a control interface; A communication module (4), the communication module (4) being respectively connected to the battery management unit, the vehicle controller, the slave control module and the energy storage system; A single-chip microcomputer (5), the single-chip microcomputer (5) being respectively connected to the acquisition module (1), the detection module (2), the control module (3) and the communication module (4); A power management module (6), the power management module (6) is externally connected to a battery or a DC power supply and internally connected to the single chip microcomputer (5).

2. The energy storage battery controller according to claim 1, characterized in that: The current measuring device includes a shunt and a Hall current sensor; The relay includes a main negative relay, a main positive relay, a fast charging positive relay and a heating positive relay; the main positive relay includes a pre-charging relay; The electronic equipment includes a collision sensor, a high-voltage component, a car key and a charging gun; The external relays include a main positive relay, a main negative relay, a fast charge relay, a slow charge relay, a heating relay, a BMU power supply relay, a fan relay, a pre-charge relay and two low-side drive relays; The energy storage system includes a charging pile and an all-in-one controller.

3. The energy storage battery controller according to claim 2, characterized in that: The acquisition module (1) includes A current acquisition unit (101), the current acquisition unit (101) being connected to the shunt and the Hall current sensor; A total voltage acquisition unit (102), the total voltage acquisition unit (102) being respectively connected to the main negative relay, the main positive relay, the fast charging positive relay and the heating positive relay; An insulation collection unit (103), the insulation collection unit (103) is connected to the insulation resistance.

4. The energy storage battery controller according to claim 2, characterized in that: The detection module (2) includes A temperature detection unit (201), the temperature detection unit (201) being connected to the fast charging socket; A collision detection unit (202), the collision detection unit (202) being connected to the collision sensor; an analog signal input detection unit (203), the analog signal input detection unit (203) being connected to the charging gun; A digital signal input detection unit (204), the digital signal input detection unit (204) is connected to the high-voltage element.

5. The energy storage battery controller according to claim 2, characterized in that: The control module (3) includes a 10-way control interface; the 10-way control interface includes 8-way high-side intelligent switches and 2-way low-side intelligent switches.

6. The energy storage battery controller according to claim 3, characterized in that: The communication module (4) includes An intranet communication module (401), the intranet communication module (401) being connected to the battery management unit and the slave control module respectively; An external network communication module (402), the external network communication module (402) is connected to the vehicle controller and the energy storage system respectively.

7. The energy storage battery controller according to claim 6, characterized in that: The intranet communication module (401) comprises an intranet CAN communication unit and a daisy chain communication unit; the intranet CAN communication unit is connected to the battery management unit, and the daisy chain communication unit is connected to the slave control module; The external network communication module (402) comprises a vehicle CAN communication unit, a charging CAN communication unit, an RS485 communication unit and a two-way dry contact communication unit; the vehicle CAN communication unit is connected to the vehicle controller, the charging CAN communication unit is connected to the charging pile, and the RS485 communication unit and the two-way dry contact communication unit are both connected to the energy storage system.

8. The energy storage battery controller according to claim 6, characterized in that: The single chip microcomputer (5) includes A total voltage detection unit (501), the total voltage detection unit (501) being connected to the total voltage acquisition unit (102); An insulation detection unit (502), the insulation detection unit (502) being connected to the insulation acquisition unit (103); An SOC detection unit (503), the SOC detection unit (503) being connected to the current acquisition unit (101); a current detection unit (504), the current detection unit (504) being connected to the current acquisition unit (101); a signal input detection unit (505), the signal input detection unit (505) being connected to the external network communication module (402); A power supply detection unit (506), the power supply detection unit (506) is connected to the power management module (6).

9. An energy storage battery management system, characterized in that: The energy storage battery management system has a built-in energy storage battery controller as described in any one of claims 1 to 8.

10. The energy storage battery management system according to claim 9, characterized in that: It also includes a sleep and wake-up module (7), a data recording module (8), a self-test module (9), a parameter setting module (10) and a program upgrade module (11).

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