Energy storage device, driving motor and new energy vehicle

Abstract

The application discloses an energy storage device, a driving motor and a new energy vehicle. The energy storage device comprises an energy storage unit and a controller. A first bus end of the controller is connected with a positive electrode end of the energy storage unit, and a second bus end of the controller is connected with a negative electrode end of the energy storage unit. The energy storage unit is used for converting direct current into alternating current to supply power to a high-voltage load. According to the technical scheme, the energy storage unit and the controller are integrated into one whole, the number of components and the space occupation are reduced, the system structure is simplified, the overall integration degree is improved, and the space efficiency of the system is improved. The integrated energy storage device and the controller can reduce the number of required components, material cost and manual installation cost, and improve production efficiency and assembly efficiency.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to an energy storage device, a drive motor, and a new energy vehicle. Background Technology

[0002] Currently, one of the existing technologies for energy storage devices in new energy vehicles is... Figure 1 As shown, the energy storage device consists of two or more energy storage modules 10 connected in series. Switches S1 and S2 are respectively installed at the total positive and total negative terminals of the multiple energy storage modules to control the opening and closing of the multiple energy storage modules. Switches S3 and S4 are installed in the energy storage device to control the input and output of the charging equipment 50. The energy storage device also integrates the charging module 20, the high-voltage equipment interface for connecting the high-voltage load equipment 30, and the power equipment interface for connecting the power equipment 40. The output control of the existing integrated energy storage module is mainly controlled by switches S1 and S2. The power distribution equipment is integrated into the energy storage device, and the various functional electrical connectors are connected together through the energy storage device. Although this reduces some copper busbars or wiring harnesses and structural components, the cost reduction space is limited. The actual number of electrical structural components used internally is not reduced, and the physical integration is low. Summary of the Invention

[0003] This invention provides an energy storage device, a drive motor, and a new energy vehicle to solve the problems of complex structure, large space occupation, and high cost of energy storage modules in the prior art.

[0004] A first aspect of the present invention provides an energy storage device, comprising:

[0005] An energy storage unit, comprising multiple energy storage modules connected in series;

[0006] The controller has a first bus terminal connected to the positive terminal of the energy storage unit and a second bus terminal connected to the negative terminal of the energy storage unit. It is used to convert the DC power of the energy storage unit into AC power to supply power to the high-voltage load.

[0007] Preferably, the energy storage device further includes:

[0008] A first charging switch, with its first end connected to the positive terminal of the energy storage unit and its second end connected to a first DC charging port;

[0009] The second charging switch has its first end connected to the negative terminal of the energy storage unit and its second end connected to the second DC charging port.

[0010] The charging module has a first input terminal connected to a first AC charging port, a second input terminal connected to a second AC charging port, a first output terminal connected to the positive terminal of the energy storage unit, and a second output terminal connected to the negative terminal of the energy storage unit. It is used to convert external AC power into DC power to supply power to the multiple energy storage modules.

[0011] Preferably, the energy storage device further includes:

[0012] The main switch has its first end connected to the positive terminal of the energy storage unit and its second end connected to the first busbar of the controller.

[0013] Preferably, the energy storage device further includes:

[0014] A power controller is connected to the control terminal of the main switch. When the power controller controls the main switch to be turned on, the multiple energy storage modules supply power to the motor through the controller. When the power controller controls the main switch to be turned off, the multiple energy storage modules stop supplying power to the motor through the controller.

[0015] Preferably, the energy storage device further includes:

[0016] A first fuse, a first high-voltage transmission port, and a second high-voltage transmission port are provided. The first end of the first fuse is connected to the second end of the main switch, the second end of the first fuse is connected to the first high-voltage transmission port, and the second high-voltage transmission port is connected to the negative terminal of the energy storage unit.

[0017] Preferably, the energy storage unit further includes:

[0018] The second fuse is connected in series with the plurality of energy storage modules;

[0019] A current sensor is connected in series with the plurality of energy storage modules.

[0020] Preferably, the energy storage device further includes:

[0021] A third fuse is connected between the positive terminal of the energy storage unit and the first output terminal of the charging module.

[0022] Preferably, the controller includes a first bridge arm, a second bridge arm, and a third bridge arm. The first ends of the first bridge arm, the first ends of the second bridge arm, and the first ends of the third bridge arm are connected together to form a first bus terminal. The second ends of the first bridge arm, the second ends of the second bridge arm, and the second ends of the third bridge arm are connected together to form a second bus terminal. The third end of the first bridge arm is connected to the first phase coil of the motor, the third end of the second bridge arm is connected to the second phase coil of the motor, and the third end of the third bridge arm is connected to the third phase coil of the motor.

[0023] The first bridge arm includes a first power unit and a second power unit. The second bridge arm includes a third power unit and a fourth power unit. The third bridge arm includes a fifth power unit and a sixth power unit. The first end of the first power unit is the first end of the first bridge arm. The second end of the second power unit is the second end of the first bridge arm. The second end of the first power unit and the first end of the second power unit are connected together to form the third end of the first bridge arm. The first end of the third power unit is the first end of the second bridge arm. The second end of the fourth power unit is the second end of the second bridge arm. The second end of the third power unit and the first end of the fourth power unit are connected together to form the third end of the second bridge arm. The first end of the fifth power unit is the first end of the third bridge arm. The second end of the sixth power unit is the second end of the third bridge arm. The second end of the fifth power unit and the first end of the sixth power unit are connected together to form the third end of the third bridge arm.

[0024] A second aspect of the present invention provides a drive motor, including the energy storage device described in the first aspect.

[0025] A third aspect of the present invention provides a new energy vehicle, including the energy storage device described in the first aspect and the drive motor described in the second aspect.

[0026] The technical effects of this invention are as follows: Through integrated design, the two can be combined into a single unit, reducing the number of components and space occupation, simplifying the system structure, improving overall integration, and enhancing system space efficiency. Integrating the energy storage device and controller can reduce the required number of components, material costs, and labor installation costs, while improving production and assembly efficiency. The self-sufficient low-voltage power supply within the integrated energy storage device means that the controller can be powered by its internal battery or other energy storage devices, giving the energy storage device a degree of independence and reliability. It can operate normally even without vehicle assembly, making it highly practical for special application scenarios or systems requiring independent power supply. Integrating the energy storage device and controller reduces assembly steps and wiring during installation, simplifying installation complexity. Furthermore, the integrated design reduces interfaces and connections between components, lowering the failure rate and simplifying maintenance and repair processes. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural schematic diagram of an energy storage device provided by existing technology;

[0029] Figure 2 This is a schematic diagram of the structure of an energy storage device provided in Embodiment 1 of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of an energy storage device provided in Embodiment 2 of the present invention;

[0031] Figure 4 This is another structural schematic diagram of an energy storage device provided in Embodiment 2 of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of an energy storage device provided in Embodiment 3 of the present invention;

[0033] Figure 6 This is another structural schematic diagram of an energy storage device provided in Embodiment 3 of the present invention;

[0034] In the diagram: 100, energy storage device; 1000, energy storage unit; 1001, energy storage module; 1002, current sensor; 1003, second fuse; 1004, first fuse; 1005, controller; 1007, charging module; 1008, first charging switch; 1009, second charging switch; 1010, main switch; 102, high-voltage electrical equipment; 103, high-voltage load; 104, charging equipment. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be understood that the invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0037] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this invention, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.

[0038] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0039] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0040] To fully understand this invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0041] Example 1

[0042] Embodiment 1 of the present invention provides an energy storage device that solves the problems of excessive cost, excessive space and excessive weight caused by the use of dual energy storage components in the prior art.

[0043] The technical solution provided in Embodiment 1 of the present invention, such as Figure 2 As shown, an energy storage device 100 is provided, comprising:

[0044] The energy storage unit 1000 includes multiple energy storage modules 1001 connected in series.

[0045] The controller 1005 has a first bus terminal connected to the positive terminal of the energy storage unit 1000 and a second bus terminal connected to the negative terminal of the energy storage unit 1000. It is used to convert the DC power of the energy storage unit 1000 into AC power to supply power to the high-voltage load 103.

[0046] The controller 1005 can be an inverter for driving the motor, and the high-voltage load 103 can be a motor. The controller 1005 converts DC power into AC power, making it suitable for driving a three-phase AC motor or connecting to the AC power grid. The inverter can adjust the frequency of the output AC power to meet the needs of different applications. Common output frequencies include 50Hz and 60Hz. The inverter can also adjust the voltage of the output AC power to adapt to different load requirements and power system standards. Common output voltages include low voltage (e.g., 220V, 230V) and high voltage (e.g., 380V, 400V). Inverters typically have various control functions, including start / stop control, speed control, direction control, and operation protection. These functions can be operated and adjusted via control signals or external interfaces. The inverter can achieve stable output voltage and frequency through electronic control and feedback mechanisms to ensure the normal operation of the connected motor and provide a stable power supply. Inverters typically have electrical isolation functions, providing safe electrical isolation protection to reduce mutual interference between the power supply and load equipment.

[0047] The integration of controller 1005 with multiple energy storage modules 1001 is as follows: Based on the technical parameters of controller 1005 and energy storage modules 1001, including rated voltage, rated capacity, and rated current, ensure that the specifications of controller 1005 and the battery match to ensure a safe and reliable connection. Energy storage modules 1001 output DC power, while controller 1005 needs to convert DC power to AC power. Correctly connect the positive (+) and negative (-) terminals of energy storage modules 1001 to the DC input terminals of controller 1005. Use appropriate cables, connectors, and terminals to ensure a reliable DC connection for integrating controller 1005 and multiple energy storage modules 1001. After controller 1005 converts DC power to AC power, it needs to be connected to a three-phase power supply or load. Determine the phase lines (L1, L2, L3) and ground line (N) of the AC output terminals according to the specifications of controller 1005. Use cables and connectors to correctly connect the AC output terminals of controller 1005 to the corresponding terminals of the three-phase power supply or load. Ensure the safety and reliability of the integrated terminals. Implement appropriate safety precautions according to specifications and standards, such as correctly selecting cable specifications and rated current, using insulating sleeves, and locking and preventing loosening of connectors, to ensure stable connections and the ability to withstand the required current load.

[0048] As an example, the controller 1005 includes a first bridge arm, a second bridge arm, and a third bridge arm. The first ends of the first bridge arm, the first ends of the second bridge arm, and the first ends of the third bridge arm are connected together to form a first bus terminal. The second ends of the first bridge arm, the second ends of the second bridge arm, and the second ends of the third bridge arm are connected together to form a second bus terminal. The third end of the first bridge arm is connected to the first phase coil of the motor, the third end of the second bridge arm is connected to the second phase coil of the motor, and the third end of the third bridge arm is connected to the third phase coil of the motor.

[0049] The first bridge arm includes a first power unit P1 and a second power unit P2. The second bridge arm includes a third power unit P3 and a fourth power unit P4. The third bridge arm includes a fifth power unit P5 and a sixth power unit P6. The first end of the first power unit P1 is the first end of the first bridge arm. The second end of the second power unit P2 is the second end of the first bridge arm. The second end of the first power unit P1 and the first end of the second power unit P2 are connected together to form the third end of the first bridge arm. The first end of the third power unit P3 is the first end of the second bridge arm. The second end of the fourth power unit P4 is the second end of the second bridge arm. The second end of the third power unit P3 and the first end of the fourth power unit P4 are connected together to form the third end of the second bridge arm. The first end of the fifth power unit P5 is the first end of the third bridge arm. The second end of the sixth power unit P6 is the second end of the third bridge arm. The second end of the fifth power unit P5 and the first end of the sixth power unit P6 are connected together to form the third end of the third bridge arm.

[0050] The technical advantages of Embodiment 1 of this invention are as follows: In the prior art, energy storage devices and controllers are usually designed and installed separately, requiring independent controller enclosures and connection lines. Through integrated design, the two can be combined into a single unit, reducing the number of components and space occupation, simplifying the system structure, improving overall integration, and increasing system space efficiency. Integrating the energy storage device and controller can reduce the required number of components, material costs, and labor installation costs, while improving production and assembly efficiency. The self-sufficient low-voltage power supply within the integrated energy storage device means that the controller can be powered by its internal battery or other energy storage devices, giving the energy storage device a degree of independence and reliability, allowing it to operate normally even without a complete vehicle assembly. This is highly practical for some special application scenarios or systems requiring independent power supply. Integrating the energy storage device and controller can reduce assembly steps and connection lines during installation, simplifying installation complexity. Furthermore, because the integrated design reduces interfaces and connections between components, it lowers the failure rate and simplifies maintenance and repair processes.

[0051] Example 2

[0052] Embodiment 2 of the present invention provides an energy storage device, which differs from Embodiment 1 in that a charging module is added to Embodiment 1 for DC charging and DC charging.

[0053] The technical solution provided in Embodiment 2 of the present invention is based on the technical solution provided in Embodiment 1, such as... Figure 3 As shown, an energy storage device 100 is provided, comprising:

[0054] The energy storage unit 1000 includes multiple energy storage modules 1001 connected in series.

[0055] The controller 1005 has a first bus terminal connected to the positive terminal of the energy storage unit 1000 and a second bus terminal connected to the negative terminal of the energy storage unit 1000. It is used to convert the DC power of the energy storage unit 1000 into AC power to supply power to the high-voltage load 103.

[0056] The first charging switch 1008 has its first end connected to the positive terminal of the energy storage unit 1000 and its second end connected to the first DC charging port.

[0057] The second charging switch 1009 has its first end connected to the negative terminal of the energy storage unit 1000 and its second end connected to the second DC charging port.

[0058] The charging module 1007 has a first input terminal connected to a first AC charging port, a second input terminal connected to a second AC charging port, a first output terminal connected to the positive terminal of the energy storage unit 1000, and a second output terminal connected to the negative terminal of the energy storage unit 1000. It is used to convert external AC power into DC power to supply power to multiple energy storage modules 1001.

[0059] The charging device 104 is connected to a first DC charging port, a second DC charging port, a first AC charging port, and a second AC charging port. When the first DC charging port and the second DC charging port are connected to the DC power supply device, and multiple energy storage modules 1001 are detected to need charging, the first charging switch 1008 and the second charging switch 1009 are controlled to be turned on, so that the DC power supply device supplies power to the multiple energy storage modules 1001.

[0060] When the first AC charging port and the second AC charging port are connected to the AC power supply equipment, and multiple energy storage modules 1001 are detected to need charging, the AC power supply equipment supplies power to the multiple energy storage modules 1001.

[0061] Furthermore, such as Figure 4 As shown, the energy storage unit 1000 also includes:

[0062] The second fuse 1003 is connected in series with multiple energy storage modules 1001.

[0063] The second fuse 1003 is used to disconnect when the current of multiple energy storage modules 1001 is too high, so as to protect the multiple energy storage modules 1001.

[0064] Furthermore, the energy storage unit 1000 also includes:

[0065] A current sensor 1002 is connected in series with multiple energy storage modules 1001.

[0066] The current sensor 1002 is used to detect the current flowing through the multiple energy storage modules 1001 and send it to the control module, which detects the power of the multiple energy storage modules 1001.

[0067] The energy storage device 100 also includes:

[0068] The third fuse 1006 is connected between the positive terminal of the energy storage unit 1000 and the first output terminal of the charging module 1007.

[0069] The third fuse 1006 is used to disconnect when the current output by the charging module 1007 is too high, thereby protecting the safety of the energy storage module.

[0070] In addition to the technical effects of Embodiment 1, this second embodiment also includes the following technical effects: This second embodiment achieves efficient charging management of multiple energy storage modules by using a charging switch, a charging module, and an AC / DC charging port. When multiple energy storage modules are detected to require charging, the control system can activate the corresponding charging switch, enabling DC or AC power supply equipment to charge the multiple energy storage modules, thereby improving charging efficiency and management capabilities. The second fuse, third fuse, and current sensor in this second embodiment play a crucial role in protecting the energy storage modules. The second fuse is connected in series between multiple energy storage modules and can automatically disconnect when the current is too high. The third fuse can automatically disconnect when the charging current is too high, thus protecting the energy storage modules from damage caused by current overload. The current sensor detects the current flowing through the energy storage module and sends the information to the control module to monitor and manage the power of multiple energy storage modules. By connecting the charging module and AC / DC charging port to the energy storage module, this solution offers flexibility and scalability. Different types of charging equipment can be connected as needed to meet various charging requirements. Furthermore, the multiple energy storage modules within the energy storage unit can be expanded and configured according to actual conditions to meet the needs of different application scenarios.

[0071] Example 3

[0072] Embodiment 3 of the present invention provides an energy storage device, which differs from Embodiment 1 in that a main switch is added to control the discharge and stop discharge of the energy storage module based on Embodiment 1.

[0073] The technical solution provided in Embodiment 3 of the present invention is based on the technical solution provided in Embodiment 1, such as... Figure 5 As shown, an energy storage device 100 includes:

[0074] The energy storage unit 1000 includes multiple energy storage modules 1001 connected in series.

[0075] The controller 1005 has a first bus terminal connected to the positive terminal of the energy storage unit 1000 and a second bus terminal connected to the negative terminal of the energy storage unit 1000. It is used to convert the DC power of the energy storage unit 1000 into AC power to supply power to the high-voltage load 103.

[0076] The first charging switch 1008 has its first end connected to the positive terminal of the energy storage unit 1000 and its second end connected to the first DC charging port.

[0077] The second charging switch 1009 has its first end connected to the negative terminal of the energy storage unit 1000 and its second end connected to the second DC charging port.

[0078] The charging module 1007 has a first input terminal connected to a first AC charging port, a second input terminal connected to a second AC charging port, a first output terminal connected to the positive terminal of the energy storage unit 1000, and a second output terminal connected to the negative terminal of the energy storage unit 1000. It is used to convert external AC power into DC power to supply power to multiple energy storage modules 1001.

[0079] The main switch 1010 has its first terminal connected to the positive terminal of the energy storage unit 1000, and its second terminal connected to the first bus terminal of the controller 1005.

[0080] The main switch 1010 is used to turn on or off according to the control signal, so that the multiple energy storage modules 1001 can output or stop outputting electrical energy.

[0081] Furthermore, the energy storage device 100 also includes:

[0082] The power controller is connected to the control terminal of the main switch 1010. When the power controller controls the main switch 1010 to be turned on, the multiple energy storage modules 1001 supply power to the motor through the controller 1005. When the power controller controls the main switch 1010 to be turned off, the multiple energy storage modules 1001 stop supplying power to the motor through the controller 1005.

[0083] The power controller plays a crucial role in power management within the system. By controlling the state of the main switch 1010, it controls the output power of the energy storage module 1001. It can control the power supply status of the energy storage module 1001 as needed, thereby controlling the operation or shutdown of the motor. The power controller's function is to coordinate and manage the power transfer between the energy storage module 1001 and the motor, ensuring that the motor receives the necessary power supply when appropriate and stopping power supply when not needed, thus achieving motor control and energy-saving management.

[0084] Furthermore, such as Figure 5 As shown, the energy storage device 100 also includes:

[0085] The system includes a first fuse 1004, a first high-voltage transmission port 105, and a second high-voltage transmission port 106. The first end of the first fuse 1004 is connected to the second end of the main switch 1010, the second end of the first fuse 1004 is connected to the first high-voltage transmission port, and the second high-voltage transmission port is connected to the negative terminal of the energy storage unit 1000.

[0086] The first high-voltage transmission port 105 and the second high-voltage transmission port 106 are used to connect high-voltage electrical equipment, so that multiple energy storage modules 1001 can directly supply power to the high-voltage electrical equipment.

[0087] Furthermore, the energy storage unit 1000 also includes:

[0088] The second fuse 1003 is connected in series with multiple energy storage modules 1001.

[0089] The second fuse 1003 is used to disconnect when the current of multiple energy storage modules 1001 is too high, so as to protect the multiple energy storage modules 1001.

[0090] Furthermore, the energy storage unit 1000 also includes:

[0091] A current sensor 1002 is connected in series with multiple energy storage modules 1001.

[0092] The current sensor 1002 is used to detect the current flowing through the multiple energy storage modules 1001 and send it to the control module, which detects the power of the multiple energy storage modules 1001.

[0093] The energy storage device 100 also includes:

[0094] The third fuse 1006 is connected between the positive terminal of the energy storage unit 1000 and the first output terminal of the charging module 1007.

[0095] The third fuse 1006 is used to disconnect when the current output by the charging module 1007 is too high, thereby protecting the safety of the energy storage module.

[0096] In addition to the technical effects of Embodiments 1 and 2, this third embodiment also includes the following technical effects: The main switch, through control signals, can precisely control the output power of the energy storage module to meet the controller's requirements by turning it on or off. The power controller can control the main switch control signals to control the output of the energy storage module, realizing switch control of the power supply to the motor, thereby effectively managing the distribution and utilization of electrical energy. The first fuse, as a protection device, is used to disconnect the circuit when the current of the energy storage module is too high, protecting the energy storage module from overcurrent damage and effectively preventing the energy storage module from being affected by abnormal conditions such as overload or short circuit. The first and second high-voltage transmission ports are used to connect to high-voltage electrical equipment, allowing multiple energy storage modules to directly supply power to high-voltage electrical equipment, avoiding energy loss during power conversion and improving energy utilization efficiency. The integration of the main switch, the first fuse, and the high-voltage transmission ports in the energy storage device, through mutual cooperation, achieves control of the energy storage module, protection of the circuit, and power supply to high-voltage electrical equipment. Through reasonable control and protection mechanisms, the safe operation of the energy storage device and efficient energy transmission can be ensured, improving the reliability and stability of the system.

[0097] Example 4

[0098] Embodiment 4 of the present invention provides a drive motor, including the energy storage device and motor drive controller provided in Embodiments 1 to 5, wherein the motor drive controller is connected to the controller.

[0099] The motor drive controller is also integrated into the energy storage device to drive the controller to output different voltages and currents.

[0100] The technical advantages of Embodiment 4 of this invention are as follows: It integrates the energy storage device and the motor drive controller into a single unit. This reduces the number of components and wiring, simplifies the system structure, reduces system complexity, and improves system reliability and stability. Because the energy storage device and motor drive controller are integrated, installation space is saved. An additional controller enclosure or space is no longer needed to house the motor drive controller, thus reducing the system's size and weight. Integrating the energy storage device and motor drive controller reduces the number of required independent components and equipment, thereby lowering system costs. Furthermore, the integration of multiple functions also saves on maintenance and installation costs. The tight integration of the energy storage device and motor drive controller optimizes circuit layout and signal transmission, improving system response speed and control accuracy.

[0101] Example 5

[0102] Embodiment 5 of the present invention provides a new energy vehicle, including the energy storage device provided in Embodiments 1 to 3 or the drive motor provided in Embodiment 4.

[0103] In Embodiment 5 of this invention, power distribution equipment, a controller, a charging module, and an energy storage module are integrated into an energy storage device. The energy storage device is switched on and off via a switching device within the device. Energy storage modules are connected in series via copper (aluminum) busbars to form a total positive and total negative connection. Each energy storage module is equipped with a current detection device, a fuse, and a switching device. These three components can be located before, after, or in the middle of the energy storage module (but before the total positive and total negative connection point), and can be arranged centrally or distributed, connected in series with the energy storage modules. The charging equipment includes a DC charging device and an AC charging device. The DC charging interface is divided into positive and negative terminals, each connected in series with a switching device and then connected to the total positive and total negative connection of the energy storage module. The AC interface input is connected to the charging module. After inversion by the AC charging module, the output terminals are connected to the total positive and total negative connection of the energy storage device, and a fuse is installed between the output positive terminal and the total positive terminal of the energy storage device. The battery is equipped with a high-voltage load interface, which can supply power to high-voltage loads such as PTC. The positive and negative terminals of the load interface are connected to the total positive and negative terminals of the energy storage module. Similarly, a fuse is installed between the positive terminal of the interface and the total positive terminal of the energy storage device. The controller is directly connected to the total positive and negative terminals of the energy storage device. The controller's three-phase output interface is arranged on the surface of the energy storage device like other interfaces. By integrating these high-voltage devices into the energy storage device, the conventional power distribution devices connecting high-voltage equipment and the connecting devices in the energy storage device are eliminated. Furthermore, the enclosure structure of the AC charging device and the electrical control unit is reduced, significantly lowering the overall cost of the high-voltage system.

[0104] Figure 6 As one example of this application, the energy storage device contains two or more energy storage modules 1001 connected in series. A current sensor 1002, a second fuse 1003, and a main switch 1010 are connected in series with the energy storage modules. Their positions can be arranged in the middle or before and after the energy storage modules; they can be arranged separately or simultaneously in the middle of the energy storage device. When there is no control signal input, the controller can control the power devices to be in a turned-off state, and the controller has no output. When the controller receives a control signal to turn on, the controller becomes turned on, that is, the controller realizes the control of the energy storage device to connect and disconnect the external power supply.

[0105] In this embodiment, one less switching device is used compared to existing technologies, resulting in lower costs. Simultaneously, the controller can be expanded in multiple levels, with two or more controllers integrated in parallel within the energy storage device. Each controller controls the corresponding output interfaces on the energy storage module. This allows for the driving of more motors.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. An energy storage device, characterized in that, include: An energy storage unit, comprising multiple energy storage modules connected in series; The controller has a first bus terminal connected to the positive terminal of the energy storage unit and a second bus terminal connected to the negative terminal of the energy storage unit. It is used to convert the DC power of the energy storage unit into AC power to supply power to the high-voltage load. The charging module has a first input terminal connected to a first AC charging port, a second input terminal connected to a second AC charging port, a first output terminal connected to the positive terminal of the energy storage unit, and a second output terminal connected to the negative terminal of the energy storage unit. It is used to convert external AC power into DC power to supply power to the multiple energy storage modules. The third fuse is connected between the positive terminal of the energy storage unit and the first output terminal of the charging module; A main switch, the first end of which is connected to the positive terminal of the energy storage unit, and the second end of which is connected to the first bus terminal of the controller; A first fuse, a first high-voltage transmission port, and a second high-voltage transmission port are provided. The first end of the first fuse is connected to the second end of the main switch, the second end of the first fuse is connected to the first high-voltage transmission port, and the second high-voltage transmission port is connected to the negative terminal of the energy storage unit.

2. The energy storage device as described in claim 1, characterized in that, The energy storage device also includes: A first charging switch, with its first end connected to the positive terminal of the energy storage unit and its second end connected to a first DC charging port; The second charging switch has its first end connected to the negative terminal of the energy storage unit and its second end connected to the second DC charging port.

3. The energy storage device as described in claim 2, characterized in that, The energy storage device also includes: A power controller is connected to the control terminal of the main switch. When the power controller controls the main switch to be turned on, the multiple energy storage modules supply power to the motor through the controller. When the power controller controls the main switch to be turned off, the multiple energy storage modules stop supplying power to the motor through the controller.

4. The energy storage device according to any one of claims 1 to 3, characterized in that, The energy storage unit also includes: The second fuse is connected in series with the plurality of energy storage modules; A current sensor is connected in series with the plurality of energy storage modules.

5. The energy storage device as described in claim 3, characterized in that, The controller includes a first bridge arm, a second bridge arm, and a third bridge arm. The first ends of the first bridge arm, the second bridge arm, and the third bridge arm are connected together to form a first bus terminal. The second ends of the first bridge arm, the second bridge arm, and the third bridge arm are connected together to form a second bus terminal. The third end of the first bridge arm is connected to the first phase coil of the motor, the third end of the second bridge arm is connected to the second phase coil of the motor, and the third end of the third bridge arm is connected to the third phase coil of the motor. The first bridge arm includes a first power unit and a second power unit. The second bridge arm includes a third power unit and a fourth power unit. The third bridge arm includes a fifth power unit and a sixth power unit. The first end of the first power unit is the first end of the first bridge arm. The second end of the second power unit is the second end of the first bridge arm. The second end of the first power unit and the first end of the second power unit are connected together to form the third end of the first bridge arm. The first end of the third power unit is the first end of the second bridge arm. The second end of the fourth power unit is the second end of the second bridge arm. The second end of the third power unit and the first end of the fourth power unit are connected together to form the third end of the second bridge arm. The first end of the fifth power unit is the first end of the third bridge arm. The second end of the sixth power unit is the second end of the third bridge arm. The second end of the fifth power unit and the first end of the sixth power unit are connected together to form the third end of the third bridge arm.

6. A drive motor, characterized in that, The device includes the energy storage device and the motor drive controller as described in any one of claims 1 to 5, wherein the motor drive controller is connected to the controller.

7. A new energy vehicle, characterized in that, It includes the energy storage device according to any one of claims 1 to 5 or the drive motor according to claim 6.

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