Battery assembly and electric device

Abstract

An electric device. The electric device comprises a battery assembly. The battery assembly comprises a battery pack and a motor controller. The motor controller is integrated on the battery pack, and is electrically connected to the battery pack.

Description

Battery assemblies and electrical equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application No. 202410676156.5, filed on May 28, 2024, entitled "Battery Assembly and Electrical Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of equipment technology, and in particular to a battery assembly and electrical equipment. Background Technology

[0004] Currently, electric vehicle technology is rapidly developing towards intelligence and high integration. Among them, the power battery pack provides power output for the car, and its performance affects the overall performance and market competitiveness of the vehicle. The input end of the motor controller is connected to the power battery pack, and the output end is connected to the motor, so that the DC power of the battery pack can be converted into AC power of the motor.

[0005] In related technologies, the battery pack and motor controller are designed and used as two independent components. This results in the battery pack and motor controller occupying a large amount of space in the vehicle layout, reducing the vehicle's integration and hindering lightweight design. Furthermore, the shell material is expensive, which is detrimental to cost control.

[0006] Public content

[0007] This application aims to address at least one of the technical problems existing in the related art. To this end, one object of this application is to provide a battery assembly that integrates the battery pack and the motor controller, thereby enabling a lightweight design and cost savings.

[0008] This application further proposes an electrical device.

[0009] The battery assembly according to this application includes: a battery pack; and a motor controller, the motor controller being integrated on the battery pack and electrically connected to the battery pack.

[0010] According to the battery assembly of this application, by integrating the motor controller onto the battery pack, the cost of the motor controller housing can be saved, as well as the layout space of the battery assembly can be saved. Moreover, the motor controller and the battery pack are electrically connected, so that the battery pack can supply power to the motor controller. This ensures that the battery assembly can drive the vehicle, thereby improving vehicle safety. Furthermore, the battery pack and the motor controller can share a cooling system, thereby improving vehicle performance.

[0011] In some examples of this application, the battery assembly further includes: a temperature control unit; and a charging and distribution control unit, both of which are electrically connected to the battery pack.

[0012] In some examples of this application, the battery assembly further includes: a first connecting wire connected between the temperature control unit and the battery pack; and a second connecting wire connected between the charging and distribution control unit and the battery pack.

[0013] In some examples of this application, the battery assembly further includes: a third connection line connected between the temperature control unit and the battery pack; and a fourth connection line, one end of which is connected to the charging and distribution control unit, and the other end of which is connected to the third connection line.

[0014] In some examples of this application, the battery assembly further includes: a vehicle heater; a compressor, the vehicle heater and the compressor being electrically connected to the temperature control unit; and a pre-charged battery, the pre-charged battery being electrically connected to the charging and distribution control unit.

[0015] In some examples of this application, the battery assembly further includes a drive motor electrically connected to the motor controller.

[0016] In some examples of this application, the temperature control unit, the charging and power distribution control unit, the compressor, and the drive motor are integrated.

[0017] In some examples of this application, the battery assembly further includes: a voltage divider contactor disposed between the battery pack and the motor controller to selectively switch the battery pack and the motor controller on and off; and a load contactor, one end of which is electrically connected to the battery pack and the other end of which is electrically connected to the temperature control unit.

[0018] In some examples of this application, the battery assembly further includes: a charging port; and a transmission, the charging port being connected to the charging and distribution control unit, the transmission, and the motor controller respectively, so that the charging and distribution control unit, the transmission, and the motor controller form a circuit.

[0019] In some examples of this application, the battery assembly further includes a charging boost capacitor connected to the motor controller and the transmission, respectively.

[0020] In some examples of this application, the battery assembly further includes: a DC charging contactor, the DC charging contactor including a DC charging positive contactor and a DC charging negative contactor, the DC charging positive contactor being disposed between the charging boost capacitor and the transmission, and the DC charging negative contactor being disposed between the battery pack and the charging port.

[0021] In some examples of this application, a bus capacitor is provided in the motor controller.

[0022] The electrical equipment according to this application includes: the battery assembly described above.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of a battery assembly according to an embodiment of this application;

[0026] Figure 2 is a schematic diagram of the battery pack applied to a rear-wheel drive vehicle;

[0027] Figure 3 is a schematic diagram of the battery pack applied to a four-wheel drive vehicle;

[0028] Figure 4 is a first topology diagram of a battery assembly according to an embodiment of this application;

[0029] Figure 5 is a second topology diagram of a battery assembly according to an embodiment of this application;

[0030] Figure 6 is a third topology diagram of a battery assembly according to an embodiment of this application;

[0031] Figure 7 is a fourth topology diagram of a battery assembly according to an embodiment of this application;

[0032] Figure 8 is a schematic block diagram of an electrical appliance according to an embodiment of this application.

[0033] Figure label:

[0034] 200. Electrical equipment; 100. Battery assembly;

[0035] 10. Battery pack; 11. Motor controller; 12. Temperature control unit; 13. Charging and distribution control unit; 14. First connecting wire; 15. Second connecting wire; 16. Car heater; 17. Compressor; 18. Pre-charged battery; 19. Drive motor; 31. Third connecting wire; 32. Fourth connecting wire;

[0036] 20. Voltage divider contactor; 21. Load contactor; 24. Charging port; 25. Gearbox; 26. Charging boost capacitor; 27. DC charging contactor; 28. DC charging positive contactor; 29. ​​DC charging negative contactor; 30. Bus capacitor. Detailed Implementation

[0037] The embodiments of this application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0038] A battery assembly 100 according to an embodiment of this application, which is used in an electrical device, is described below with reference to Figures 1-7. For example, a battery pack in an electric vehicle.

[0039] As shown in Figure 1, the battery assembly 100 according to this application includes a battery pack 10 and a motor controller 11. The motor controller 11 is integrated on the battery pack 10 and is electrically connected to the battery pack 10.

[0040] Therefore, by integrating the motor controller 11 onto the battery pack 10, the cost of the motor controller 11 housing can be saved, as well as the space required for the battery assembly 100. Furthermore, the motor controller 11 and the battery pack 10 are electrically connected, allowing the battery pack 10 to supply power to the motor controller 11. This ensures that the battery assembly 100 can drive the vehicle, thereby improving vehicle safety. Additionally, the battery pack 10 and the motor controller 11 can share a cooling system, which can improve vehicle performance.

[0041] In some embodiments of this application, as shown in FIG1, the battery assembly 100 further includes a temperature control unit 12 and a charging and distribution control unit 13, both of which are electrically connected to the battery pack 10. It is understood that the battery pack 10 is electrically connected to both the temperature control unit 12 and the charging and distribution control unit 13, thereby enabling the battery pack 10 to provide electrical energy to both the temperature control unit 12 and the charging and distribution control unit 13. This allows the temperature control unit 12 to control the vehicle temperature, and the charging and distribution unit to charge the battery pack 10.

[0042] In some embodiments of this application, as shown in FIG1, the battery assembly 100 further includes a first connecting line 14 and a second connecting line 15. The first connecting line 14 is connected between the temperature control unit 12 and the battery pack 10, and the second connecting line 15 is connected between the charging and distribution control unit 13 and the battery pack 10. That is, the first connecting line 14 is provided between the temperature control unit 12 and the battery pack 10, so that the battery pack 10 can provide electrical energy to the temperature control unit 12, thereby facilitating the temperature control unit 12 to perform cooling and heating functions. The second connecting line 15 is provided between the charging and distribution control unit 13 and the battery pack 10, so that the charging and distribution control unit 13 can transfer electrical energy to the battery pack 10, thereby enabling the recycling of electrical energy.

[0043] In some embodiments of this application, as shown in FIG1, the battery assembly 100 further includes a third connecting line 31 and a fourth connecting line 32. The third connecting line 31 is connected between the temperature control unit 12 and the battery pack 10, and one end of the fourth connecting line 32 is connected to the charging and distribution control unit 13, while the other end of the fourth connecting line 32 is connected to the third connecting line 31. It is understood that the third connecting line 31 is provided between the temperature control unit 12 and the battery pack 10, thereby enabling the battery pack 10 to provide electrical energy to the temperature control unit 12, thus facilitating the temperature control unit 12 to perform cooling and heating functions. The fourth connecting line 32 is connected between the charging and distribution control unit 13 and the third connecting line 31, thereby enabling the battery pack 10 to be connected to both the temperature control unit 12 and the charging and distribution control unit 13, thereby improving the integration of the battery assembly 100, reducing electromagnetic pollution, and ultimately improving vehicle performance.

[0044] In some embodiments of this application, as shown in FIG1, the battery assembly 100 further includes an automotive heater 16, a compressor 17, and a pre-charged battery 18. The automotive heater 16 and the compressor 17 are electrically connected to the temperature control unit 12, and the pre-charged battery 18 is electrically connected to the charging and distribution control unit 13. That is, the temperature control unit 12 is connected to the automotive heater 16 and the compressor 17. This arrangement allows the battery pack 10 to supply power to the temperature control unit 12, after which the compressor 17 performs a cooling process, thereby achieving the vehicle's air conditioning cooling function; or the automotive heater 16 can perform a heating process, thereby generating heat and achieving the vehicle's heating function. The charging and distribution control unit 13 is electrically connected to the pre-charged battery 18, which converts low-voltage electricity into high-voltage electricity, enabling the pre-charged battery 18 to perform a pre-charging function. Before the vehicle's circuit is activated, the pre-charged battery 18 can pre-charge the battery assembly 100, thereby enabling a safer and more stable circuit activation. For example, the pre-charged battery 18 is a 12V battery.

[0045] In some embodiments of this application, as shown in FIG1, the battery assembly 100 further includes a drive motor 19, which is electrically connected to the motor controller 11. It is understood that the drive motor 19 can enable the battery assembly 100 to form a boost chopper circuit, so that the vehicle can start the drive motor 19 when the conditions for boost charging are met, thereby increasing the charging voltage and the charging rate, and thus realizing the vehicle's power distribution function.

[0046] In some embodiments of this application, as shown in FIG1, the temperature control unit 12, the charging and distribution control unit 13, the compressor 17 and the drive motor 19 are integrated. This arrangement can improve the integration of the battery assembly 100, thereby saving costs and space for the battery assembly 100.

[0047] In some embodiments of this application, as shown in Figures 2 and 3, the battery assembly 100 further includes a voltage divider contactor 20 and a load contactor 21. The voltage divider contactor 20 is disposed between the battery pack 10 and the motor controller 11 to selectively switch the battery pack 10 and the motor controller 11 on and off. One end of the load contactor 21 is electrically connected to the battery pack 10, and the other end of the load contactor 21 is electrically connected to the temperature control unit 12 and the charging and distribution control unit 13.

[0048] In other words, a voltage divider contactor 20 is provided between the battery pack 10 and the motor controller 11, and the voltage divider contactor 20 is electrically connected to both the battery pack 10 and the motor controller 11, thereby enabling the voltage divider contactor 20 to connect the battery pack 10 and the motor controller 11. A load contactor 21 is provided between the battery pack 10 and the temperature control unit 12, thereby enabling the load contactor 21 to connect the battery pack 10 and the temperature control unit 12, thus facilitating the battery pack 10 to provide power to the temperature control unit 12.

[0049] In some embodiments of this application, as shown in Figures 2 and 3, the battery assembly 100 further includes a charging port 24 and a transmission 25. The charging port 24 is connected to the charging and distribution control unit 13, the transmission 25, and the motor controller 11, respectively, so that the charging and distribution control unit 13, the transmission 25, and the motor controller 11 form a circuit. That is, the charging port 24 is connected to the charging and distribution control unit 13, the transmission 25, and the motor controller 11. This allows the charging and distribution control unit 13, the transmission 25, and the motor controller 11 to form a circuit, thereby allowing current to flow in the battery assembly 100.

[0050] In some embodiments of this application, as shown in Figures 2 and 3, the battery assembly 100 further includes a charging boost capacitor 26, which is connected to the motor controller 11 and the transmission 25 respectively. This configuration enables the battery assembly 100 to form a boost chopper circuit, allowing the vehicle to start the drive motor 19 when the conditions for boost charging are met, thereby increasing the charging voltage and charging rate, and thus realizing the vehicle's power distribution function.

[0051] In some embodiments of this application, as shown in Figures 2 and 3, the battery assembly 100 further includes a DC charging contactor 27. The DC charging contactor 27 includes a DC charging positive contactor 28 and a DC charging negative contactor 29. The DC charging positive contactor 28 is disposed between the charging boost capacitor 26 and the transmission 25, and the DC charging negative contactor 29 is disposed between the battery pack 10 and the charging port 24. A bus capacitor 30 is disposed in the motor controller 11. It is understood that the DC charging positive contactor 28 is disposed between the charging boost capacitor 26 and the transmission 25, thereby connecting the charging boost capacitor 26 and the transmission 25. The DC charging negative contactor 29 is disposed between the battery pack 10 and the charging port 24, thereby connecting the battery pack 10 and the charging port 24. The bus capacitor 30 is located in the motor controller 11, thereby eliminating high-frequency noise within the motor controller 11 and improving the performance of the battery assembly 100.

[0052] In some embodiments of this application, as shown in Figures 2 and 3, the battery assembly 100 can be installed in a rear-wheel drive or four-wheel drive electric vehicle. In this case, the battery assembly 100 can be divided into three processes: pre-charging, driving, and charging boost.

[0053] Pre-charging process: When the vehicle is not powered on, the voltage divider contactor 20 is open. Before the voltage divider contactor 20 closes, the bus capacitor 30 is pre-charged to ensure that the potentials at both ends of the voltage divider contactor 20 are equal. Simultaneously, the load contactor 21 is closed, connecting the charging and distribution control unit 13 and the battery pack 10, allowing the battery pack 10 to pre-charge the pre-charged battery 18 with boost voltage. When the potentials at both ends of the voltage divider contactor 20 are equal and the activation condition is met, the voltage divider contactor 20 closes, thus completing the power-on process. After the vehicle is powered on, the air conditioner or heater is turned on according to the needs of the passengers. At this time, the voltage divider contactor 20 closes, the load contactor 21 opens, and the capacitor in the temperature control unit 12 is pre-charged to meet the power supply conditions. The charging and distribution control unit 13 and the pre-charged battery 18 then perform boost pre-charging, and the load contactor 21 closes, thus enabling the vehicle to supply power to the air conditioner or heater.

[0054] Driving process: After the vehicle is powered on, the power supply conditions of the motor controller 11 are met, so that the motor controller 11 can convert the high voltage DC power of the battery pack 10 into three-phase AC power, and then output it to the motor through the battery assembly 100, thereby enabling the vehicle to move.

[0055] Charging boost process: The winding of the drive motor 19 can act as an inductor in the circuit. Combined with the charging boost capacitor 26 and the DC charging positive contactor 28, a boost chopper circuit can be formed. The DC high voltage enters through the AC / DC integrated charging port 24. Under the condition of meeting the boost charging requirements, it enters the battery pack 10 through the boost chopper circuit, thereby increasing the charging speed.

[0056] In some embodiments of this application, as shown in FIG4, the first connecting line 14 and the second connecting line 15 are merged into a single connecting line, thereby reducing costs and improving the sealing performance of the battery assembly 100.

[0057] In some embodiments of this application, as shown in FIG5, the temperature control unit 12, the charging and distribution control unit 13, the compressor 17 and the transmission 25 are integrated, thereby saving vehicle layout space and thus saving costs. It also allows the motor controller 11 and the drive motor 19 to share a cooling cycle, thereby improving the thermal management efficiency of the vehicle.

[0058] In some embodiments of this application, as shown in FIG6, the first connecting line 14 and the second connecting line 15 are combined into one connecting line, and the battery pack 10 and the motor controller 11 are connected to the temperature control unit 12 and the charging and distribution control unit 13 through a wire, thereby reducing the use of wires and improving the integration of the battery assembly 100.

[0059] In some embodiments of this application, as shown in FIG7, the battery pack 10 and the motor controller 11 are connected to the temperature control unit 12 and the charging and distribution control unit 13 via connectors, the drive motor 19 is arranged separately, and the compressor 17 is integrated with the temperature control unit 12 and the charging and distribution control unit 13, so that they can share the cooling benefits.

[0060] The electrical device 200 according to this application includes the battery assembly 100 of the above embodiments, as shown in FIG8. By integrating the motor controller 11 onto the battery pack 10, the cost of the motor controller 11 housing can be saved, as well as the placement space of the battery assembly 100. Moreover, the motor controller 11 and the battery pack 10 are electrically connected, allowing the battery pack 10 to supply power to the motor controller 11. This ensures that the battery assembly 100 can drive the vehicle, thereby improving vehicle safety. Furthermore, the battery pack 10 and the motor controller 11 can share a cooling system, thereby improving vehicle performance.

[0061] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0062] In the description of this application, "first feature" and "second feature" may include one or more of the features. In the description of this application, "multiple" means two or more. In the description of this application, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this application, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery assembly (100), wherein, include: Battery pack (10); and A motor controller (11) is integrated on the battery pack (10) and is electrically connected to the battery pack (10).

2. The battery assembly (100) according to claim 1, wherein, Also includes: Temperature control unit (12); and The charging and power distribution control unit (13) and the temperature control unit (12) are both electrically connected to the battery pack (10).

3. The battery assembly (100) according to claim 2, wherein, Also includes: A first connecting line (14) is connected between the temperature control unit (12) and the battery pack (10); and The second connecting line (15) is connected between the charging and distribution control unit (13) and the battery pack (10).

4. The battery assembly (100) according to claim 2 or 3, wherein, Also includes: A third connecting line (31) is connected between the temperature control unit (12) and the battery pack (10); and The fourth connecting line (32) is connected at one end to the charging and distribution control unit (13) and at the other end to the third connecting line (31).

5. The battery assembly (100) according to any one of claims 2-4, wherein, Also includes: Car heater (16); The compressor (17), the car heater (16), and the compressor (17) are electrically connected to the temperature control unit (12), respectively; and A pre-charged battery (18) is electrically connected to the charging and distribution control unit (13).

6. The battery assembly (100) according to claim 5, wherein, Also includes: A drive motor (19) is electrically connected to the motor controller (11).

7. The battery assembly (100) according to claim 6, wherein, The temperature control unit (12), the charging and power distribution control unit (13), the compressor (17) and the drive motor (19) are integrated.

8. The battery assembly (100) according to any one of claims 2-7, wherein, Also includes: A voltage divider contactor (20) is disposed between the battery pack (10) and the motor controller (11) to selectively switch the battery pack (10) and the motor controller (11) on and off; and A load contactor (21) is provided, one end of which is electrically connected to the battery pack (10), and the other end of which is electrically connected to the temperature control unit (12) and the charging and distribution control unit (13).

9. The battery assembly (100) according to any one of claims 2-8, wherein, Also includes: Charging port (24); and The transmission (25) and the charging port (24) are respectively connected to the charging and power distribution control unit (13), the transmission (25) and the motor controller (11) to form a circuit.

10. The battery assembly (100) according to claim 9, wherein, It also includes a charging boost capacitor (26), which is connected to the motor controller (11) and the transmission (25) respectively.

11. The battery assembly (100) according to claim 10, wherein, It also includes a DC charging contactor (27), which includes a DC charging positive contactor (28) and a DC charging negative contactor (29). The DC charging positive contactor (28) is disposed between the charging boost capacitor (26) and the transmission (25), and the DC charging negative contactor (29) is disposed between the battery pack (10) and the charging port (24).

12. The battery assembly (100) according to any one of claims 1-11, wherein, The motor controller (11) is equipped with a bus capacitor (30).

13. An electrical appliance (200), wherein, include: The battery assembly (100) according to any one of claims 1-12.

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