An energy storage system

Abstract

The utility model discloses an energy storage system, including: a battery pack, a main control module and a fire execution module; the battery pack includes a battery management unit and a fire monitoring unit, and the battery management unit and the fire monitoring unit are integrated in the battery pack; the battery management unit is used to monitor the battery information of the battery pack, and the fire monitoring unit is used to monitor the fire information of the battery pack and transmit it to the battery management unit; the main control module is connected to the battery management unit, and the main control module is used to receive the battery information and fire information transmitted by the battery management unit; the fire execution module is connected to the main control module, and the fire execution module is used to control whether to execute the fire operation according to the fire information. The technical solution of the utility model integrates the battery management unit and the fire monitoring unit in the battery pack, and supplies power and communicates with the battery management unit and the fire monitoring unit through a set of power supply lines, which reduces the number of wiring harnesses of the communication circuit and reduces the design redundancy of the hardware.

Description

Technical Field

[0001] The utility model relates to the technical field of battery energy storage, in particular to an energy storage system. Background Art

[0002] At present, existing battery energy storage products often use BMS (Battery Management System) and fire detection devices to perform fire detection on battery packs. BMS detects information such as the battery internal resistance and voltage of the battery pack, and the fire detection device detects fire signals such as battery pack temperature, smoke and combustible gas. The power supply and communication circuits of BMS and fire detection devices are complex, the product design cost is high, and external maintenance is difficult. Utility Model Content

[0003] The utility model provides an energy storage system to solve the problems of complex battery pack power supply circuit and communication circuit, signal transmission and connection redundancy, and high design cost.

[0004] According to the utility model, an energy storage system is provided, comprising: a battery pack, a main control module and a fire execution module;

[0005] The battery pack includes a battery management unit and a fire monitoring unit, which are integrated in the battery pack, and the battery management unit is connected to the battery pack; the battery management unit is used to monitor the battery information of the battery pack, and the fire monitoring unit is used to monitor the fire information of the battery pack and transmit it to the battery management unit;

[0006] The main control module is connected to the battery management unit, and the main control module is used to receive the battery information and the fire protection information transmitted by the battery management unit;

[0007] The fire execution module is connected to the main control module, and the fire execution module is used to control whether to execute a fire operation according to the fire information.

[0008] Optionally, the battery management unit and the fire monitoring unit in each battery pack share a set of power lines.

[0009] Optionally, the battery pack includes a first communication interface and a second communication interface, the energy storage system includes multiple battery packs, the first communication interface of the first battery pack is connected to the main control module, and the second communication interface of the battery pack is connected to the first communication interface of the adjacent battery pack.

[0010] Optionally, the main control module includes a communication storage unit;

[0011] The communication storage unit is connected to the battery management unit, and is used to store the battery information and the fire information to form a database, and transmit the fire information to the fire execution module.

[0012] Optionally, the fire execution module includes a fire host and a fire extinguishing unit, the fire host is connected to the main control module, and the fire extinguishing unit is connected to the fire host; the fire host is used to control whether the fire extinguishing unit performs a fire extinguishing operation according to the fire information.

[0013] Optionally, the fire extinguishing unit includes a fire cylinder and a solenoid valve, and the fire host is connected to the fire cylinder via the solenoid valve; the fire host is used to control the solenoid valve to open or close according to the fire information to spray the fire gas in the fire cylinder.

[0014] Optionally, the fire execution module further includes an alarm unit, which is connected to the fire host; the fire host is also used to control whether the alarm unit alarms according to the fire information.

[0015] Optionally, the fire execution module also includes an inverter control unit, the fire host is connected to the inverter control unit, and the inverter is connected to the battery pack; the fire host is also used to adjust the output power of the inverter control unit according to the fire information; the inverter control unit is used to adjust the charging and discharging power of the inverter according to the output power.

[0016] Optionally, it includes a first power line and multiple second power lines, the first battery pack is connected to the main control module via the first power line, and adjacent battery packs are connected via second power lines.

[0017] Optionally, the fire monitoring unit includes: a temperature sensor, a smoke sensor and a combustible gas detector; the battery management unit is connected to the temperature sensor, the smoke sensor and the combustible gas detector respectively.

[0018] The energy storage system provided by the embodiment of the utility model integrates the battery management unit and the fire monitoring unit in the battery pack. The battery management unit communicates and transmits the battery information monitored by it in the battery pack and the fire information monitored by the fire monitoring unit in the environment of the battery pack to the main control unit. The main control module monitors and records the battery information and fire information in the battery pack, and transmits the fire information to the fire execution module. The fire execution module performs fire extinguishing and other fire fighting operations when it determines that a fire or potential fire has occurred based on the fire information. The technical solution provided by the embodiment of the utility model integrates the battery management unit and the fire monitoring unit in the battery pack, and the main control unit supplies power to the battery management unit and the fire monitoring unit and communicates with them through a set of power supply lines. While realizing the monitoring of the safety status of the batteries in the battery pack, it reduces the design redundancy of the hardware, reduces the number of wiring harnesses in the communication circuit, and also reduces the production cost and the subsequent operation and maintenance cost.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of an energy storage system provided according to an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of another energy storage system provided according to an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of another energy storage system provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Figure 1 It is a structural diagram of an energy storage system provided according to an embodiment of the utility model. This embodiment can be applied to monitoring battery information in a battery pack and fire detection. The energy storage system can be implemented in the form of hardware and / or software. The energy storage system includes: a battery pack 130, a main control module 120 and a fire execution module 110; the battery pack 130 includes a battery management unit 140 and a fire monitoring unit 150, and the battery management unit 140 is connected to the battery pack; the battery management unit 140 and the fire monitoring unit 150 are integrated in the battery pack 130, and the battery management unit 140 is connected to the battery pack; the battery management unit 140 is used to monitor the battery information of the battery pack, and the fire monitoring unit 150 is used to monitor the fire information of the battery pack 130 and transmit it to the battery management unit 140; the main control module 120 is connected to the battery management unit 140, and the main control module 120 is used to receive the battery information and fire information transmitted by the battery management unit 140; the fire execution module 110 is connected to the main control module 120, and the fire execution module 110 is used to control whether to perform a fire operation according to the fire information.

[0027] Specifically, the battery pack is the energy source of the new energy vehicle, responsible for storing and providing electrical energy. The battery pack includes multiple battery packs, which are formed by combining multiple battery cells in series and parallel, and further combining and connecting multiple battery packs to form a complete battery pack. The battery pack 130 is provided with an integrated battery management unit 140 and a fire monitoring unit 150. The battery management unit 140 may be a BMS, which is responsible for collecting and monitoring the battery information of the battery pack in the battery pack 130. The battery information may be the voltage, internal resistance, temperature and other electrical and thermal parameters of the battery in the battery pack. The fire monitoring unit 150 may be a detector for monitoring the ambient temperature, smoke concentration, combustible gas content and other fire information in the battery pack, for example, a fire detector. The fire monitoring unit 150 transmits the monitored fire information to the battery management unit 140, and the battery management unit 140 transmits the fire information and battery information to the main control module 120. The main control module 120 may be a BMS host computer. The BMS host computer is a computer device used to monitor and manage the BMS. It is responsible for monitoring and recording the battery information of the battery pack, communicating data with the BMS, and issuing control instructions. The main control module 120 also organizes the fire information and transmits it to the fire execution module 110. When the fire execution module 110 determines that there is a fire or a potential fire in the battery pack based on the fire information, it performs fire extinguishing alarms and other fire operations.

[0028] The energy storage system provided by the embodiment of the utility model integrates a battery management unit and a fire monitoring unit in a battery pack. The battery management unit communicates and transmits the battery information monitored by it in the battery pack and the fire information monitored by the fire monitoring unit in the environment of the battery pack to the main control unit. The fire execution module performs fire extinguishing and other fire fighting operations when it determines that a fire or potential fire has occurred based on the fire information. The main control unit communicates with the battery management unit through a set of communication transmission lines. The hardware of the fire monitoring unit and the battery management unit are merged, and the fire information and battery information are uniformly uploaded to the main control unit by the battery management unit. The fire monitoring unit and the battery management unit share the communication transmission line, which reduces the design redundancy of the hardware and the number of wiring harnesses of the communication circuit while realizing the monitoring of the battery safety status of the battery pack. At the same time, it also reduces the production cost and the subsequent operation and maintenance costs.

[0029] Optionally, Figure 2 FIG. 1 is a schematic diagram of another energy storage system according to an embodiment of the present utility model. Figure 2 The main control module 120 includes a communication storage unit 121; the communication storage unit 121 is connected to the battery management unit 140, and the communication storage unit 121 is used to store battery information and fire information and form a database, and transmit the fire information to the fire execution module 110.

[0030] Specifically, the communication storage unit 121 may be a component in the BMS host computer that is responsible for communication with the battery management unit 140 and the fire execution module 110 and data storage. The communication storage unit 121 organizes the battery information and fire information in each battery pack 130 to form a database for storage, thereby enabling monitoring of the status of the battery pack 130 and conveniently calling the battery pack information for maintenance in case of failure. The communication storage unit 121 may also transmit the fire information in the battery pack 130 to the fire execution module 110. When the fire execution module 110 comprehensively determines that there is a fire or potential fire in the battery pack 130 based on the fire information, it performs fire extinguishing operations and other fire operations.

[0031] Optionally, based on the above embodiment, continue to refer to Figure 2 The fire execution module 110 includes a fire host 111 and a fire extinguishing unit 112. The fire host 111 is connected to the main control module 120, and the fire extinguishing unit 112 is connected to the fire host 111; the fire host 111 is used to control whether the fire extinguishing unit 112 performs a fire extinguishing operation according to the fire information.

[0032] Specifically, the fire host 111 is connected to the main control module 120, and the fire host 111 can comprehensively determine whether there is a fire or a potential fire in the battery pack 130 based on the received fire information. The fire host 111 is connected to the fire extinguishing unit 112. When the fire host 111 determines that there is a fire or a potential fire in the battery pack 130, it controls the fire extinguishing unit to perform a fire extinguishing operation to prevent the fire from further expanding, ensure the safety of the battery pack, and avoid the occurrence of safety accidents.

[0033] Optionally, based on the above embodiment, continue to refer to Figure 2 The fire execution module 110 also includes an alarm unit 113, which is connected to the fire host 111; the fire host 111 is also used to control whether the alarm unit 113 alarms according to the fire information.

[0034] Specifically, the alarm unit 113 may be an audible and visual alarm device. When the fire host 111 determines that a fire or potential fire has occurred in the battery pack 130 based on the fire information, the fire host 111 controls the alarm unit 113 to issue an audible and visual warning, thereby promptly reminding the staff to ensure safe production.

[0035] Optionally, based on the above embodiment, continue to refer to Figure 2 The fire execution module 110 also includes an inverter control unit 114, the fire host 111 is connected to the inverter control unit 114, and the inverter 160 is connected to the battery pack 130; the fire host 111 is also used to adjust the output power of the inverter control unit 114 according to the fire information; the inverter control unit 114 is used to adjust the charging and discharging power of the inverter 160 according to the output power.

[0036] Specifically, the battery pack 130 is connected to the inverter 160, and the inverter 160 is connected to the external power supply, and the battery pack 130 is charged by the external power supply. The inverter 160 converts the AC power of the external power supply into the DC power required for charging the battery pack, so that the battery pack can be charged safely and efficiently. The inverter control unit 114 is a control device that controls the charging and discharging power of the inverter 160. When the battery pack 130 is charging, if it is determined that a fire or potential fire has occurred in the battery pack 130, the fire host 111 reduces the output power of the inverter control unit 114, so that the charging and discharging power of the inverter drops to zero, and stops charging the battery pack 130, so as to avoid fire when the battery pack is charging and ensure the safety of the battery pack.

[0037] Optionally, based on the above embodiment, continue to refer to Figure 2 The fire monitoring unit 150 includes: a temperature sensor 151, a smoke sensor 152 and a combustible gas detector 153; the battery management unit 140 is connected to the temperature sensor 151, the smoke sensor 152 and the combustible gas detector 153 respectively.

[0038] Specifically, the temperature sensor 151 is used to monitor the ambient temperature inside the battery pack 130. A large amount of heat will be generated during the charging and discharging process of the battery cells in the battery pack 130, which may cause a fire in the battery pack. The temperature sensor 151 can monitor the ambient temperature inside the battery pack 130. When the battery pack 130 burns, combustible gases such as hydrogen and carbon monoxide will be generated. The smoke sensor 152 monitors the smoke concentration in the battery pack 130, and the combustible gas detector 153 monitors the combustible gas content in the battery pack 130. The battery management unit 140 is connected to the temperature sensor 151, the smoke sensor 152 and the combustible gas detector 153 respectively, and transmits the collected ambient temperature, smoke concentration and combustible gas content in the battery pack as fire information to the fire execution module 120, so that it can determine whether the ambient temperature in the battery pack 130 has a fire or a potential fire.

[0039] Optionally, Figure 3 FIG. 1 is a schematic diagram of another energy storage system according to an embodiment of the present utility model. Figure 3 The fire extinguishing unit 112 includes a fire cylinder 115 and a solenoid valve 116. The fire host 111 is connected to the fire cylinder 115 through the solenoid valve 116. The fire host 111 is used to control the solenoid valve 116 to open or close according to the fire information, so that the fire gas in the fire cylinder 115 is sprayed.

[0040] Specifically, the fire cylinder 115 stores firefighting gas, which may be an inert gas that can be used to extinguish fires, such as carbon dioxide. When the fire host 111 determines that a fire or potential fire has occurred in the battery pack 130 based on the fire information, the fire host 111 controls the solenoid valve 116 to open, so that the firefighting gas in the fire cylinder 115 is sprayed to extinguish the fire and prevent the fire from further spreading. When there is no fire in the battery pack 130, the fire host 111 controls the solenoid valve 116 to close to prevent the firefighting gas in the fire cylinder 115 from leaking.

[0041] Optionally, Figure 3 FIG. 1 is a schematic diagram of another energy storage system according to an embodiment of the present utility model. Figure 3 , the battery management unit and fire monitoring unit in each battery pack share a set of power lines.

[0042] Specifically, the battery management unit 140 in the battery pack 130 and the fire monitoring unit 150 are connected via a data acquisition line. The battery management unit 140 communicates with the main control module 120 via the CAN bus. The battery management unit 140 and the fire monitoring unit 150 use a DC power supply, such as a 24V DC power supply, to achieve data communication transmission between the battery management unit 140 and the fire monitoring unit 150. This reduces hardware design redundancy, reduces the number of communication loop harnesses, reduces total costs, and reduces the difficulty of later operation and maintenance.

[0043] Optionally, based on the above embodiment, continue to refer to Figure 3 The energy storage system includes multiple battery packs, and the battery pack 130 includes a first communication interface 131 and a second communication interface 132. The energy storage system includes multiple battery packs 130, and the first communication interface 131 of the first battery pack 130 is connected to the main control module 120, and the second communication interface 132 of the battery pack 130 is connected to the first communication interface 131 of the adjacent battery pack.

[0044] Specifically, a circuit board is provided on the battery pack 130, and a plurality of external interfaces are provided on the circuit board, including a first communication interface 131, a second communication interface 132, and other interfaces such as the positive and negative electrodes of the battery pack. The battery management unit 140 of the battery pack 130 is connected to its own first communication interface 131 via a power supply line. When monitoring multiple battery packs 130, the first communication interface of the first battery pack 130 can be connected to the main control module 120, and the first communication interface 131 of other battery packs and the second communication interface 132 of their adjacent battery packs 130 are connected via power supply lines. Thereby, the monitoring of multiple battery packs is achieved through a set of power supply wiring harnesses, further reducing the number of wiring harnesses of the communication loop.

[0045] Optionally, based on the above embodiment, continue to refer to Figure 3 The energy storage system includes a first power line L1 and multiple second power lines L2. The first battery pack is connected to the main control module through the first power line L1, and adjacent battery packs are connected through the second power lines L2.

[0046] Specifically, the first power line L1 is a power line connecting the main control module 120 and the first battery pack 130, and the second power line is a power line connecting other adjacent battery packs 130. The main control module 120 provides power and data communication for multiple battery packs through the first power line L1 and the second power line L2. The connection between adjacent battery packs 130 through the second power line L2 can further reduce the wiring harness connection and reduce costs.

[0047] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0048] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An energy storage system, characterized in that: include: Battery pack, main control module and fire execution module; The battery pack includes a battery management unit and a fire monitoring unit, which are integrated in the battery pack, and the battery management unit is connected to the battery pack; the battery management unit is used to monitor the battery information of the battery pack, and the fire monitoring unit is used to monitor the fire information of the battery pack and transmit it to the battery management unit; The main control module is connected to the battery management unit, and the main control module is used to receive the battery information and the fire protection information transmitted by the battery management unit; The fire execution module is connected to the main control module, and the fire execution module is used to control whether to execute a fire operation according to the fire information.

2. The energy storage system according to claim 1, characterized in that: The battery management unit and the fire monitoring unit in each battery pack share a set of power lines.

3. The energy storage system according to claim 2, characterized in that: The battery pack includes a first communication interface and a second communication interface, and the energy storage system includes multiple battery packs. The first communication interface of the first battery pack is connected to the main control module, and the second communication interface of the battery pack is connected to the first communication interface of the adjacent battery pack.

4. The energy storage system according to claim 1, characterized in that: The main control module includes a communication storage unit; The communication storage unit is connected to the battery management unit, and is used to store the battery information and the fire information to form a database, and transmit the fire information to the fire execution module.

5. The energy storage system according to claim 1, characterized in that: The fire execution module includes a fire host and a fire extinguishing unit. The fire host is connected to the main control module, and the fire extinguishing unit is connected to the fire host. The fire host is used to control whether the fire extinguishing unit performs a fire extinguishing operation according to the fire information.

6. The energy storage system according to claim 5, characterized in that: The fire extinguishing unit includes a fire cylinder and a solenoid valve, and the fire host is connected to the fire cylinder through the solenoid valve; the fire host is used to control the solenoid valve to open or close according to the fire information, so that the fire gas in the fire cylinder is sprayed.

7. The energy storage system according to claim 5, characterized in that: The fire execution module also includes an alarm unit, which is connected to the fire host; the fire host is also used to control whether the alarm unit alarms according to the fire information.

8. The energy storage system according to claim 5, characterized in that: The fire execution module also includes an inverter control unit, the fire host is connected to the inverter control unit, and the inverter is connected to the battery pack; the fire host is also used to adjust the output power of the inverter control unit according to the fire information; the inverter control unit is used to adjust the charging and discharging power of the inverter according to the output power.

9. The energy storage system according to claim 3, characterized in that: It includes a first power line and multiple second power lines. The first battery pack is connected to the main control module via the first power line, and adjacent battery packs are connected via the second power lines.

10. The energy storage system according to claim 1, characterized in that: The fire monitoring unit comprises: a temperature sensor, a smoke sensor and a combustible gas detector; the battery management unit is connected to the temperature sensor, the smoke sensor and the combustible gas detector respectively.

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