Battery pack of vehicle and vehicle comprising same

Abstract

The utility model provides a battery pack of a vehicle and the vehicle including the same. The battery pack of the vehicle comprises a shell, a power battery and a domain controller, wherein the power battery and the domain controller are contained in the shell. The domain controller is integrated with a main control chip, the main control chip is integrated with a whole vehicle control module, a motor control module and a battery management module, the domain controller comprises a battery connecting port, and the main control chip is electrically connected with the power battery through the battery connecting port and used for controlling the power battery to work. The power battery and the domain controller integrated with the whole vehicle control module, the motor control module and the battery management module are arranged in the same shell, so that the integration level of the whole vehicle power framework is improved, the size is reduced, the weight is reduced, and meanwhile the cost is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power domain control of an automobile, and in particular to a battery pack of a vehicle and a vehicle comprising the same. BACKGROUND

[0002] Under the current "double carbon" background, the commercial vehicle industry is facing the urgent task of promoting green and low-carbon transformation. Commercial vehicle manufacturers are actively developing and applying various new technologies to achieve green and low-carbon transformation, among which the most notable are electric commercial vehicle technology, hybrid commercial vehicle technology and fuel cell commercial vehicle technology. With the application of new technologies, market competition has entered a white-hot stage, and the power system, as the core competitive component of new energy commercial vehicles, plays a key role in reducing the weight and cost of vehicles.

[0003] In a traditional vehicle power system, the power battery, the vehicle controller, the motor controller and the battery management system often exist as independent components and are connected through complex wiring harnesses to achieve power transmission and control. Each component requires an independent housing and fixing, which is heavy in structure, high in material cost, complex in vehicle chassis layout, and not conducive to reducing the weight and cost of new energy commercial vehicles. CONTENT OF THE UTILITY MODEL

[0004] The application provides a battery pack of a vehicle with high integration and a vehicle comprising the same.

[0005] The application provides a battery pack of a vehicle, comprising: a housing, a power battery and a domain controller accommodated in the housing; the domain controller is integrated with a main control chip, the main control chip is integrated with a vehicle control module, a motor control module and a battery management module, the domain controller comprises a battery connection port, the main control chip is electrically connected with the power battery through the battery connection port, and is used to control the power battery to work.

[0006] Optionally, the power battery comprises a first mounting surface, the domain controller comprises a second mounting surface, and the first mounting surface and the second mounting surface are attached through bolts.

[0007] Optionally, the wiring harness between the domain controller and the power battery is connected through a wiring terminal.

[0008] Optionally, the domain controller and the power battery are electrically connected through a copper bar.

[0009] Optionally, the domain controller is integrated with a voltage conversion chip, the voltage conversion chip is integrated with a DC / DC conversion module and is connected with the power battery through the battery connection port; the main control chip is electrically connected with the voltage conversion chip and is used to control the voltage conversion chip to work.

[0010] Optionally, the voltage conversion chip is further integrated with a DC / AC conversion module, and the domain controller further comprises an external power supply interface, the DC / AC conversion module is configured to connect an external power supply through the external power supply interface, convert the voltage of the external power supply, and charge the power battery.

[0011] Optionally, the domain controller is integrated with a driving chip electrically connected with the master control chip, and is connected with the power battery through the battery connection port, and the master control chip is configured to control the driving chip to work.

[0012] Optionally, the domain controller is integrated with a power distribution chip electrically connected with the master control chip, and is connected with the power battery through the battery connection port, and the master control chip is configured to control the power distribution chip to work.

[0013] Optionally, the bottom of the shell of the battery pack comprises a cooling channel for circulating cooling liquid to dissipate heat for the power battery and the domain controller.

[0014] The application further provides a vehicle comprising: a high-voltage electrical component, a low-voltage electrical component, and the battery pack according to any one of the above.

[0015] In some embodiments, the battery pack of the vehicle comprises: a shell, a power battery and a domain controller accommodated in the shell. The domain controller is integrated with a master control chip, the master control chip is integrated with a vehicle control module, a motor control module and a battery management module, the domain controller comprises a battery connection port, and the master control chip is electrically connected with the power battery through the battery connection port and configured to control the power battery to work. By arranging the power battery and the domain controller integrated with the vehicle control module, the motor control module and the battery management module in the same shell, the integration degree of the vehicle power architecture is improved, the volume is reduced, the weight is reduced, and the cost is reduced.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0018] Figure 1 The structure of the battery pack of the application is shown.

[0019] Figure 2 The structure of the battery pack of the application is shown.

[0020] Figure 3 Fig. 4 shows a partial structural schematic diagram of one embodiment of the battery pack of the present application.

[0021] Figure 4 Fig. 5 shows a partial structural schematic diagram of another embodiment of the battery pack of the present application.

[0022] Figure 5 Fig. 6 shows a structural block diagram of one embodiment of the battery pack of the present application.

[0023] Figure 6 Fig. 7 shows a structural block diagram of another embodiment of the battery pack of the present application.

[0024] Figure 7 Fig. 8 shows a structural block diagram of another embodiment of the battery pack of the present application.

[0025] Figure 8 Fig. 9 shows a sectional view of one embodiment of the battery pack of the present application.

[0026] In the figure, 10, battery pack; 11, shell; 111, upper shell; 112, lower shell; 113, connection box; 12, power battery; 13, copper bar; 14, wiring terminal; 15, cooling channel; 151, liquid inlet; 152, liquid outlet; 20, domain controller; 21, port; 23, battery connection port; 24, external power supply interface; 30, main control chip; 31, vehicle control module; 32, motor control module; 33, battery management module; 34, temperature acquisition module; 40, voltage conversion chip; 41, DC / DC conversion module; 42, DC / AC conversion module; 50, drive chip; 60, power distribution chip. DETAILED DESCRIPTION

[0027] The present application provides a battery pack of a vehicle and a vehicle comprising the same. The battery pack of the vehicle and the vehicle comprising the same of the present application are described in detail below with reference to the accompanying drawings. The features in the following embodiments and implementation manners can be combined with each other without conflict.

[0028] The present application provides a vehicle comprising: a high-voltage electrical component, a low-voltage electrical component, and a battery pack provided by the present application. The battery pack is electrically connected to the high-voltage electrical component and the low-voltage electrical component. The battery pack is used to supply power to the high-voltage electrical component and the low-voltage electrical component according to the state of the high-voltage electrical component and the low-voltage electrical component, and control the high-voltage electrical component and the low-voltage electrical component to work.

[0029] The high-voltage electrical component is a component that needs to use high-voltage electricity in the vehicle. In some embodiments, the high-voltage electrical component includes a motor, an electric heater, and an air conditioner. The motor converts electrical energy into mechanical energy to drive the vehicle. In a low-temperature environment, the battery pack needs a certain amount of heat to work normally, and the electric heater can heat the battery pack to play a role in preheating the battery pack. The air conditioner plays a role in providing cooling and heating and air circulation for the vehicle.

[0030] The low-voltage electrical component is a component that needs to use low-voltage electricity in the vehicle. In some embodiments, the low-voltage electrical component includes a storage battery, a socket, a pedal, and a hand brake. The storage battery provides electrical energy for the vehicle and stores electrical energy. When the engine starts or runs at low speed, the generator of the vehicle does not generate electricity or the voltage is very low, and all the electronic systems in the vehicle are powered by the storage battery. The socket is used to provide power for the vehicle electrical equipment, such as a cigarette lighter socket, an inverter power socket, etc. The pedal includes a clutch pedal, a brake pedal, and an accelerator pedal. The hand brake is a component to ensure the safety of the vehicle when it is parked, including a mechanical hand brake and an electronic hand brake.

[0031] Figure 1 The structure of one embodiment of the battery pack 10 of the present application is shown.

[0032] Figure 2 The structure of one embodiment of the battery pack 10 of the present application is shown.

[0033] As shown in the figure, Figures 1-2 The battery pack 10 of the vehicle includes a housing 11, a power battery 12 accommodated in the housing 11, and a domain controller 20.

[0034] The power battery 12 is used to provide electrical energy for the vehicle. The electrical energy output by the power battery 12 can be converted to provide electrical energy to the high-voltage electrical component and the low-voltage electrical component. The power battery 12 can also receive charging from an external power source.

[0035] The housing 11 includes an accommodation space inside. The power battery 12 and the domain controller 20 are both accommodated in the accommodation space. The housing 11 includes an upper housing 111, a lower housing 112, and a connection box 113. The lower housing 112 and the connection box 113 can be integrally formed. The upper housing 111 is used to cover the lower housing 112.

[0036] The power battery 12 is accommodated in the space formed by the upper housing 111 and the lower housing 112, and the domain controller 20 is accommodated in the space formed by the connection box 113. The domain controller 20 is arranged at the front end or the rear end of the power battery 12. The domain controller 20 can be detached separately. When the domain controller 20 is detached, the upper housing 111 does not need to be opened, and the power battery 12 does not need to be detached.

[0037] The battery pack 10 further comprises a port 21 arranged on the surface of the shell 11 and used for connecting external devices, such as high-voltage electrical components, low-voltage electrical components of a vehicle, or an external power source.

[0038] The power battery 12 comprises a first mounting surface, and the domain controller 20 comprises a second mounting surface, the first mounting surface and the second mounting surface being attached by bolts.

[0039] The power battery 12 comprises a first mounting surface, and the domain controller 20 comprises a second mounting surface, the first mounting surface and the second mounting surface being attached by bolts.

[0040] Figure 3 Fig. 1 shows a partial structural schematic diagram of one embodiment of the battery pack 10 of the present application.

[0041] Figure 4 Fig. 2 shows a partial structural schematic diagram of another embodiment of the battery pack 10 of the present application.

[0042] The power battery 12 and the domain controller 20 are electrically connected by the copper bar 13. The main control chip 30 and the power battery 12 are electrically connected by the copper bar 13. The copper bar 13 can realize quick conduction or cutting of high-voltage connection and low-voltage connection between the power battery 12 and the domain controller 20, and facilitate assembly and disassembly of the power battery 12 and the domain controller 20.

[0043] The wire harness between the power battery 12 and the domain controller 20 is connected by the terminal 14. The terminal 14 can fix the wire harness, so that the connection between the power battery 12 and the domain controller 20 is more stable.

[0044] Figure 5 Fig. 3 shows a structural block diagram of one embodiment of the battery pack 10 of the present application.

[0045] The domain controller 20 is integrated with the main control chip 30. The main control chip 30 is integrated with the vehicle control module 31, the motor control module 32 and the battery management module 33. The domain controller 20 comprises a battery connection port 23, and the main control chip 30 is electrically connected with the power battery 12 through the battery connection port 23 and used for controlling the power battery 12 to work.

[0046] The domain controller 20 is integrated with multiple control modules and used for realizing intelligent management of the whole power system of the vehicle.

[0047] The vehicle control module 31 is responsible for receiving signals from various sensors of the vehicle and controlling the driving state of the vehicle, such as acceleration, deceleration, steering, etc., according to these signals and preset algorithms.

[0048] The motor control module 32 is specifically used to control the operation of the motor, including the start, stop, speed and torque adjustment of the motor, etc.

[0049] The battery management module 33 is responsible for monitoring the state of the power battery 12, including parameters such as the battery capacity, temperature, voltage and current, and adjusting the charging and discharging strategy of the battery according to these parameters to ensure the safety and efficient use of the battery.

[0050] The main control chip 30 is electrically connected with the power battery 12 through the battery connection port 23, for monitoring the state of the power battery 12 and controlling the charging and discharging process of the power battery 12.

[0051] The vehicle control module 31, the motor control module 32 and the battery management module 33 are integrated in the main control chip 30. The main control chip 30 integrates the control logic of the vehicle control module 31, the motor control module 32 and the battery management module 33. There is no need to connect through a wire harness between the vehicle control module 31, the motor control module 32 and the battery management module 33. The functions of the vehicle control module 31, the motor control module 32 and the battery management module 33 are realized by one main control chip 30, instead of three chips.

[0052] The main control chip 30 also has functions of HVIL (High Voltage Interlock) detection, SOC (State of Charge) estimation, SOH (State of Health) estimation, insulation detection, fault diagnosis, etc.

[0053] In some embodiments, by arranging the power battery 12 and the domain controller 20 integrated with the vehicle control module 31, the motor control module 32 and the battery management module 33 in the same housing 11, the integration of the vehicle power architecture is improved, the volume is reduced, the weight is reduced, and the cost is reduced.

[0054] Figure 6 The structure block diagram of another embodiment of the battery pack 10 of the present application is shown.

[0055] The domain controller 20 is integrated with a voltage conversion chip 40. The voltage conversion chip 40 is integrated with a DC / DC conversion module 41 connected with the power battery 12 through the battery connection port 23. The main control chip 30 is electrically connected with the voltage conversion chip 40 for controlling the operation of the voltage conversion chip 40.

[0056] The DC / DC conversion module 41 is responsible for converting the high-voltage direct current provided by the power battery 12 into low-voltage direct current for use by low-voltage electrical components. At the same time, the voltage conversion chip 40 also accepts control from the master control chip 30 and adjusts the output voltage and current according to the working state of the high-voltage electrical components, low-voltage electrical components, and power battery 12 to meet the power requirements of different components.

[0057] The master control chip 30 and the voltage conversion chip 40 are integrated into the domain controller 20, share the port 21 of the domain controller 20, and share the working parameters of other components obtained by the domain controller 20. The master control chip 30 and the voltage conversion chip 40 are connected through a low-voltage wiring harness.

[0058] By integrating the master control chip 30, which integrates the vehicle control module 31, the motor control module 32, and the battery management module 33, and the voltage conversion chip 40, which integrates the DC / DC conversion module 41, into the domain controller 20, the integration level of the domain controller 20 is improved, the number of chips of the domain controller 20 can be reduced, the difficulty of chip arrangement can be reduced, electromagnetic interference between chips can be reduced, and costs can be reduced.

[0059] Figure 7 The structure block diagram of another embodiment of the battery pack 10 of the application is shown.

[0060] The voltage conversion chip 40 also integrates a DC / AC conversion module 42, and the domain controller 20 also includes an external power supply interface 24. The DC / AC conversion module 42 is used to connect an external power supply through the external power supply interface 24, convert the voltage of the external power supply, and charge the power battery 12.

[0061] The voltage conversion chip 40 integrates the DC / AC conversion module 42 in addition to the DC / DC conversion module 41. The DC / AC conversion module 42 is used to convert direct current into alternating current. The DC / AC conversion module 42 is connected to an external power supply through the external power supply interface 24. The external power supply can be a charging pile or other power supply that can provide alternating current. When the power battery 12 needs to be charged, the DC / AC conversion module 42 converts the alternating current provided by the external power supply into direct current suitable for charging the power battery 12.

[0062] The external power supply interface 24 is an interface on the domain controller 20 for connecting an external power supply. The external power supply interface 24 also has protection measures such as waterproofing, dustproofing, and overvoltage and overcurrent protection to ensure that the domain controller 20 or the power battery 12 is not damaged during charging.

[0063] By integrating the DC / AC conversion module 42, the domain controller 20 can not only obtain electrical energy from the power battery 12, but also be charged by an external power source. This allows the domain controller 20 to manage the electrical energy of the power system during vehicle driving, and also provides charging services for the power battery 12 when the vehicle is stationary.

[0064] The voltage conversion chip 40 integrates the DC / AC conversion module 42, which can more comprehensively manage the electrical energy of the vehicle, improve the flexibility and convenience of the vehicle, and enable the vehicle to be charged in different environments and conditions, thereby prolonging the endurance mileage and use time of the vehicle.

[0065] The domain controller 20 integrates the drive chip 50 electrically connected with the main control chip 30, and is connected with the power battery 12 through the battery connection port 23. The main control chip 30 is used to control the drive chip 50 to work.

[0066] The main control chip 30 is responsible for receiving and processing signals from various sensors, and issuing corresponding control instructions according to these signals. The drive chip 50 is responsible for converting these control instructions into specific electrical signals to drive high-voltage electrical components (such as motors) to work. The drive chip 50 includes SiC or IGBT.

[0067] The drive chip 50 in the domain controller 20 can convert and adjust the voltage output by the power battery 12 according to the instructions of the main control chip 30. In this way, it can ensure that the high-voltage electrical components can obtain stable and appropriate voltage.

[0068] High-voltage electrical components such as motors, compressors, etc. are connected to the domain controller 20 through the port 21 and receive driving signals from the drive chip 50. Under the action of the driving signal, the high-voltage electrical components can work normally and provide the required power for the vehicle.

[0069] The domain controller 20 integrates the drive chip 50, which improves the integration of the domain controller 20, so that the domain controller 20 can flexibly adjust the output voltage of the power battery 12 and the working state of the high-voltage electrical components according to different driving conditions and requirements, thereby optimizing the energy consumption and performance of the vehicle.

[0070] The domain controller 20 integrates the power distribution chip 60 electrically connected with the main control chip 30, and is connected with the power battery 12 through the battery connection port 23. The main control chip 30 is used to control the power distribution chip 60 to work.

[0071] The domain controller 20 integrates the power distribution chip 60, so that the domain controller 20 can more effectively manage and distribute the electrical energy from the power battery 12. The power distribution chip 60 is not only responsible for receiving electrical signal instructions from the main control chip 30, but also for accurately transmitting the electrical energy of the power battery 12 to various high-voltage electrical components according to these instructions.

[0072] The power distribution chip 60 can monitor the key parameters of the power battery 12, such as the power, voltage and current, to ensure that the power battery 12 will not exceed the safe range during power transmission. The power distribution chip 60 also dynamically adjusts the power transmitted to the high-voltage electrical components according to the instructions of the master control chip 30 to meet the energy demand under different working conditions.

[0073] The high-voltage electrical components receive power from the power distribution chip 60. The power distribution chip 60 precisely controls the power transmitted to these high-voltage electrical components according to the instructions of the master control chip 30 to ensure that they can work normally.

[0074] The power distribution chip 60 also has functions such as overcurrent protection, short circuit protection, overvoltage protection and undervoltage protection. In this way, it can ensure that in the process of power transmission, even if abnormal situations are encountered, the power supply can be cut off in time to prevent equipment damage or the occurrence of safety accidents such as fires.

[0075] The domain controller 20 integrates the power distribution chip 60, improving the integration of the domain controller 20, so that the vehicle can obtain stable and sufficient power supply under various working conditions, thereby optimizing the energy consumption and performance of the vehicle.

[0076] Figure 8 The battery pack 10 according to the present application is shown in a cross-sectional view.

[0077] The bottom of the shell 11 of the battery pack 10 includes a cooling channel 15 for circulating cooling liquid to dissipate heat from the power battery 12 and the domain controller 20. The cooling channel 15 includes an inlet port 151 and an outlet port 152.

[0078] The cooling channel 15 is a cavity or pipe system arranged at the bottom of the shell 11, and its purpose is to circulate cooling liquid. The cooling liquid flows in the cooling channel 15, which can effectively absorb heat from the power battery 12 and the domain controller 20 and carry away the heat.

[0079] The inlet port 151 is located at the starting end of the cooling channel and is used to receive cooling liquid from an external cooling system. The cooling liquid enters the cooling channel 15 through the inlet port 151.

[0080] The outlet port 152 is located at the end of the cooling channel 15, and the cooling liquid that has absorbed heat flows out of the cooling channel 15 through the outlet port 152 and enters the cooling circulation system of the vehicle or an external radiator.

[0081] The cooling channel 15 is arranged to dissipate heat from the power battery 12 and the domain controller 20, thereby improving the working efficiency and reliability of the entire battery pack 10.

[0082] The temperature acquisition module 34 is integrated in the domain controller 20 and is electrically connected to the main control chip 30. The temperature acquisition module 34 is used to monitor the temperature of the domain controller 20 and its surrounding environment in real time. A first temperature sensing element is arranged in the cooling channel 15 of the shell 11 to monitor the temperature of the cooling liquid. A second temperature sensing element is arranged inside or on the surface of the domain controller 20. The second temperature sensing element can directly sense the temperature of the domain controller 20 itself and provide direct and accurate temperature data for the temperature acquisition module 34.

[0083] According to the detection data of the first temperature sensing element and the second temperature sensing element, the temperature acquisition module 34 can obtain the temperature of the domain controller 20 and the cooling liquid in the cooling channel 15. If an abnormal temperature is detected, for example, the temperature of the domain controller 20 is too high, the main control chip 30 can send an alarm signal according to the obtained temperature data to trigger corresponding cooling measures or protection measures to ensure the safe and stable operation of the domain controller 20.

[0084] The temperature acquisition module 34 is integrated in the domain controller 20 and is electrically connected to the main control chip 30. The temperature acquisition module 34 includes a first temperature sensing element arranged in the cooling channel 15 and a second temperature sensing element arranged in the domain controller 20. In this way, the thermal load of the domain controller 20 can be evaluated, the working life can be predicted, and potential overheating risks can be discovered in time.

Claims

1. A battery pack of a vehicle, characterized by, The battery pack comprises: a shell, a power battery accommodated in the shell, and a domain controller; the domain controller is integrated with a master control chip, the master control chip is integrated with a vehicle control module, a motor control module and a battery management module, the domain controller comprises a battery connection port, and the master control chip is electrically connected with the power battery through the battery connection port to control the power battery to work.

2. The battery pack of claim 1, wherein, The power battery comprises a first mounting surface, the domain controller comprises a second mounting surface, and the first mounting surface and the second mounting surface are attached through bolts.

3. The battery pack of the vehicle according to claim 1, characterized by, A wire harness between the domain controller and the power battery is connected through a wiring terminal.

4. The battery pack of claim 1, wherein, The domain controller and the power battery are electrically connected through a copper bar.

5. The battery pack of claim 1, wherein, The domain controller is integrated with a voltage conversion chip, the voltage conversion chip is integrated with a DC / DC conversion module, and the voltage conversion chip is connected with the power battery through the battery connection port; the master control chip is electrically connected with the voltage conversion chip to control the voltage conversion chip to work.

6. The battery pack of claim 5, wherein, The voltage conversion chip is further integrated with a DC / AC conversion module, the domain controller further comprises an external power supply interface, the DC / AC conversion module is used to connect an external power supply through the external power supply interface, convert the voltage of the external power supply, and charge the power battery.

7. The battery pack of claim 1, wherein, The domain controller is integrated with a driving chip electrically connected with the master control chip, the driving chip is connected with the power battery through the battery connection port, and the master control chip is used to control the driving chip to work.

8. The battery pack of claim 1, wherein, The domain controller is integrated with a power distribution chip electrically connected with the master control chip, the power distribution chip is connected with the power battery through the battery connection port, and the master control chip is used to control the power distribution chip to work.

9. The battery pack of any one of claims 1-8, wherein, The bottom of the shell of the battery pack comprises a cooling channel for circulating cooling liquid to dissipate heat for the power battery and the domain controller.

10. A vehicle characterized by comprising: The battery pack comprises: a high-voltage electrical component, a low-voltage electrical component, and the battery pack of any one of claims 1-9; the battery pack is electrically connected with the high-voltage electrical component and the low-voltage electrical component.

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