A vehicle battery PACK structure and vehicle

Abstract

The present invention provides a vehicle battery PACK structure and a vehicle, wherein the vehicle battery PACK structure comprises: a plurality of battery cells, a rod body for inserting the plurality of battery cells, and a shell, wherein the plurality of battery cells are arranged along the axis direction of the rod body, the battery cells are connected to the rod body, and the plurality of battery cells are placed in the shell and connected. The plurality of battery cells are installed in series through the rod body, so that the battery cells have the same degree of fixation, thereby improving the stability and reliability of the battery cells.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle components, and in particular to a vehicle battery PACK structure and a vehicle. Background Art

[0002] In general, the modules in the power battery system of vehicles are fixed by glue bonding. During the assembly process, the glue ratio and application uniformity are prone to deviations, resulting in poor consistency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a vehicle battery PACK structure and a vehicle in view of the deficiencies in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a vehicle battery PACK structure, which includes: a plurality of battery cells, a rod body for connecting the plurality of battery cells, and a shell, the plurality of battery cells are arranged along the axial direction of the rod body, the battery cells are connected to the rod body, and the plurality of battery cells are placed in the shell and connected.

[0005] The beneficial effect of the present invention is that multiple battery cells are installed in series through the rod body, so that the battery cells have the same degree of fixation, thereby improving the stability and reliability of the battery cells.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, it also includes: a spacing component for spacing two adjacent battery cells apart, and the spacing component is arranged between the two adjacent battery cells.

[0008] The beneficial effect of adopting the above further solution is that the provision of the spacing component improves the stability of the battery cell.

[0009] Furthermore, the spacing component includes: a heating plate and a buffer pad, and the heating plate and the buffer pad are integrally formed.

[0010] The beneficial effect of adopting the above further solution is that the interval arrangement of the heating plates enables the battery cells to be heated in a targeted manner, thereby improving the heating efficiency.

[0011] Furthermore, the top of the spacing component is connected to the rod body, and the spacing component abuts against two adjacent battery cells.

[0012] The beneficial effect of adopting the above further solution is that the spacing component is connected to the rod body, thereby improving the stability of the spacing component.

[0013] Furthermore, it also includes: a PCB circuit board, the PCB circuit board is arranged on the top of the battery cell, a plurality of battery cell poles are arranged on the battery cell, the battery cell poles are connected to the PCB circuit board, and the PCB circuit board is connected to the heating plate.

[0014] The beneficial effect of adopting the above further solution is: the setting of the circuit board integrates the circuit components into the battery, eliminating the intricate connection of the circuits, which can reduce the occurrence of short circuits or open circuits and improve the reliability of the battery.

[0015] Furthermore, the PCB circuit board is integrated with a high-voltage connector, a low-voltage communication connector, a low-voltage acquisition device, a temperature acquisition device and a BMS control device, and the connection method between the battery cell pole and the PCB circuit board is laser welding.

[0016] The beneficial effect of adopting the above further solution is: integrating the circuit components of the battery on the circuit board, facilitating the installation and maintenance of the circuit and reducing the space occupied by the circuit components.

[0017] Furthermore, a cover body adapted to the shell body, the cover body and the shell body are both provided with a heat dissipation duct for heat dissipation, and a port of the heat dissipation duct is provided with a duct switch for opening and closing the heat dissipation duct.

[0018] The beneficial effect of adopting the above further solution is that the heat dissipation duct is provided to dissipate heat for the internal structure of the battery, and the duct switch is used to selectively use the heat dissipation duct and close the heat dissipation duct.

[0019] Furthermore, it also includes: an actuator for controlling the air duct switch, the actuator is connected to the air duct switch, and the actuator is connected to the PCB circuit board.

[0020] The beneficial effect of adopting the above further scheme is: the actuator is used to drive the opening and closing of the air duct switch according to the control instructions of the circuit board, thereby improving the automation capability of the cooling system, improving the user experience, and extending the battery life.

[0021] Furthermore, the port of the heat dissipation air duct is arranged opposite to the front air intake grille of the vehicle.

[0022] In addition, the present invention also provides a vehicle, which includes a vehicle battery PACK structure as described in any one of the above.

[0023] The beneficial effect of adopting the above further solution is: multiple battery cells are installed in series through the rod body, so that the battery cells have the same degree of fixation, thereby improving the stability and reliability of the battery cells.

[0024] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is one of the schematic diagrams of the battery PACK structure provided by an embodiment of the present invention.

[0026] Figure 2 The second schematic diagram of the battery PACK structure provided by the embodiment of the present invention.

[0027] Figure 3 The third schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0028] Figure 4 The fourth schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0029] Figure 5 The fifth schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0030] Figure 6 The sixth schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0031] Figure 7 The seventh schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0032] Figure 8 The eighth schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0033] Fig. 9 The ninth schematic diagram of the battery PACK structure provided in the embodiment of the present invention.

[0034] Fig.10 The tenth schematic diagram of the battery PACK structure provided in an embodiment of the present invention.

[0035] Explanation of the accompanying numbers: 1-battery cell; 2-rod body; 3-shell; 4-spacer; 5-heating plate; 6-buffer pad; 7-PCB circuit board; 8-battery cell pole; 9-high voltage connector; 10-low voltage communication connector; 11-cover; 12-heat dissipation duct; 13-duct switch; 14-BMS control equipment. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] like Figures 1 to 10 As shown, Figure 1This is one of the schematic diagrams of the battery PACK structure provided by an embodiment of the present invention. Figure 2 The second schematic diagram of the battery PACK structure provided by the embodiment of the present invention. Figure 3 The third schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Figure 4 The fourth schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Figure 5 The fifth schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Figure 6 The sixth schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Figure 7 The seventh schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Figure 8 The eighth schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Fig. 9 The ninth schematic diagram of the battery PACK structure provided in the embodiment of the present invention. Fig.10 The tenth schematic diagram of the battery PACK structure provided in an embodiment of the present invention.

[0038] A vehicle battery PACK structure comprises: a plurality of battery cells 1, a rod body 2 for inserting the plurality of battery cells 1, and a shell 3, wherein the plurality of battery cells 1 are arranged along the axial direction of the rod body 2, the battery cells 1 are connected to the rod body 2, and the plurality of battery cells 1 are placed in the shell 3 and connected.

[0039] Multiple cells are installed in series through the rod body, so that the cells have the same degree of fixation, improving the stability and reliability of the cells. The management system has high integration, high space utilization, reliable structural connection, accurate heating of the thermal management system, and low cooling energy consumption.

[0040] Power battery pack generally refers to packaging, encapsulation and assembly. For example, two batteries are connected in series to form a certain shape according to customer requirements, which is called pack in the industry. In the battery PACK industry, batteries that can be used directly are often called cells, while finished batteries connected to PCB boards and with functions such as charge and discharge control are called battery packs. Battery PACK mainly refers to the processing and assembly of lithium battery packs. Battery PACK is now mainly concentrated in lithium battery PACK factories, which have their own battery PACK structure design, battery PACK electronic design and battery PACK production workshops. They can independently develop and design according to customer needs. After the customer's PACK lithium battery customization needs are confirmed through battery solutions, battery specifications, and battery samples, the battery PACK production line in the battery PACK workshop will be produced and processed, and shipped after passing the quality inspection.

[0041] In the prior art, the module groups in general power battery systems are fixed by glue bonding, and the high-voltage connection is separated from the low-voltage acquisition, temperature acquisition, and management system equipment, so low-voltage wiring harnesses are required for mutual communication and acquisition. The current thermal management solutions in power battery systems are divided into 1. Heating with heating plate and natural cooling 2. Water-cooled plate heating and cooling 3. Heating with heating plate and fan cooling in the battery pack. The glue ratio and the uniformity of application are prone to deviations and poor consistency. The wiring harness in the battery pack is messy and the space utilization rate is low. It is easy for the wiring harness to be worn and short-circuited during vehicle driving, causing the risk of fire. The current thermal management solutions in power battery systems have high energy consumption and low space utilization.

[0042] The purpose of the embodiments of the present invention is to greatly improve the module grouping integration and fixing reliability, and highly integrate the high-voltage connection, low-voltage collection, temperature collection, and BMS control equipment to make the space utilization rate in the battery pack higher, solve the fire risk caused by insulation short circuit caused by wiring harness wear, use a new method to heat the battery cell, and use the natural wind generated by the vehicle during driving to dissipate the heat from the battery pack.

[0043] The technical solution of the embodiment of the present invention is that the technical solution of the present invention is mainly applied to the battery system of passenger cars. The battery cell shell adopts the form of cast aluminum welding. The grouping method is that the bottom of each battery cell is connected to the bottom plate of the box body with 4 bolts, and the top of the battery cell is connected in series with 2 long bolts to ensure that the heating plates between the battery cells are tightly fitted; high-voltage connection, low-voltage collection, temperature collection, and BMS control equipment are highly integrated in a PCB circuit board, and the connection with the battery cell pole adopts laser welding technology, so that the battery pack no longer needs a wiring harness, thereby saving space and avoiding the insulation short circuit caused by the wear of the wiring harness. The heating plates between the battery cells are used to heat the battery cells, and individual low-temperature battery cells are accurately heated. When the vehicle is traveling at high speed, that is, the vehicle is discharging at high power, the temperature of the battery cells themselves rises, and the BMS in the battery pack detects that the temperature has risen to a certain temperature (which can be customized according to customer requirements, generally 40°C), and controls the intelligent air duct switch to open, so that the airflow during the vehicle's driving process is introduced into the heat dissipation duct of the battery pack, so that the battery cells dissipate heat quickly. The battery pack and the air duct are separated from each other, making the battery pack airtight, which can ensure the IP68 standard and greatly reduce the energy consumption of the cooling system.

[0044] 1. The battery cells adopt a new grouping structure, which greatly improves the grouping efficiency and installation reliability. 2. The new electrical connection method is used to make the high-voltage connection, low-voltage collection, temperature collection, and BMS control equipment highly integrated; 3. A new thermal management solution is adopted. When heating at low temperature, the intelligent air duct switch is closed to reduce heat dissipation, so that the heating plate of the battery cell is heated to ensure the safe use temperature of the battery cell; when high temperature heat dissipation is required, the intelligent air duct switch is turned on, so that the airflow during the vehicle driving process is introduced into the battery and the heat dissipation air duct of the battery pack to ensure the safe use temperature of the battery cell, and effectively improve the cooling efficiency and reduce energy consumption. 4. The battery cell grouping adopts a rigid connection solution, which greatly improves safety and reliability; 5. High-voltage connection, low-voltage collection, temperature collection, and BMS control equipment are highly integrated, so that the space in the battery pack is effectively utilized and easy to produce and assemble; 6. A new thermal management solution is adopted to ensure the safe use temperature of the battery cell, and effectively improve the cooling efficiency and reduce energy consumption.

[0045] Furthermore, it also includes: a spacing component 4 for spacing two adjacent battery cells 1 apart, and the spacing component 4 is arranged between the two adjacent battery cells 1.

[0046] The beneficial effect of adopting the above further solution is that the provision of the spacing component improves the stability of the battery cell.

[0047] Furthermore, the spacing component 4 includes: a heating plate 5 and a buffer pad 6, and the heating plate 5 and the buffer pad 6 are integrally formed.

[0048] The beneficial effect of adopting the above further solution is that the interval arrangement of the heating plates enables the battery cells to be heated in a targeted manner, thereby improving the heating efficiency.

[0049] The elastic buffer pads between battery cells are integrated with battery cell heating plates, which can accurately heat each battery cell to different temperatures to ensure the temperature consistency of the battery cells.

[0050] Furthermore, the top of the spacing component 4 is connected to the rod body 2 , and the spacing component 4 abuts against two adjacent battery cells 1 .

[0051] The beneficial effect of adopting the above further solution is that the spacing component is connected to the rod body, thereby improving the stability of the spacing component.

[0052] Furthermore, it also includes: a PCB circuit board 7, the PCB circuit board 7 is arranged on the top of the battery cell 1, a plurality of battery cell poles 8 are arranged on the battery cell 1, the battery cell poles 8 are connected to the PCB circuit board 7, and the PCB circuit board 7 is connected to the heating plate 5.

[0053] The beneficial effect of adopting the above further solution is: the setting of the circuit board integrates the circuit components into the battery, eliminating the intricate connection of the circuits, which can reduce the occurrence of short circuits or open circuits and improve the reliability of the battery.

[0054] PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a "printed" circuit board.

[0055] The high-voltage Busbar (busbar, busbar, busbar) is fixed with PET (Polyethylene terephthalate) film on both sides of the PCB circuit board. The temperature collection and temperature sensing collection contacts are connected to the high-voltage Busbar. The BMS management system chip equipment, relays, fuses and other electrical parts are integrated in the PCB circuit board.

[0056] Furthermore, the PCB circuit board 7 is integrated with a high-voltage connector 9, a low-voltage communication connector 10, a low-voltage acquisition device, a temperature acquisition device and a BMS control device 14, and the connection method between the battery cell pole 8 and the PCB circuit board 7 is laser welding.

[0057] The beneficial effect of adopting the above further solution is: integrating the circuit components of the battery on the circuit board, facilitating the installation and maintenance of the circuit board and reducing the space occupancy rate of the circuit components.

[0058] BMS Battery Management System (BATTERY MANAGEMENT SYSTEM) Battery Management System (BMS) is the link between battery and user, and its main object is secondary battery. It is mainly to improve the utilization rate of battery and prevent overcharge and over discharge of battery. It can be used in electric vehicles, battery vehicles, robots, drones, etc. In addition, BMS is also a common storage format for computer music and game files and the name of a new generation of telecommunications business management system.

[0059] The electrical components and busbar are integrated into a PCB circuit board on the top of the battery cell.

[0060] Furthermore, a cover 11 adapted to the housing 3 is provided with a heat dissipation duct 12 for heat dissipation on both the cover 11 and the housing 3 , and a duct switch 13 for opening and closing the heat dissipation duct is provided at a port of the heat dissipation duct 12 .

[0061] The beneficial effect of adopting the above further solution is that the heat dissipation duct is provided to dissipate heat for the internal structure of the battery, and the duct switch is used to selectively use the heat dissipation duct and close the heat dissipation duct.

[0062] Furthermore, it also includes: an actuator for controlling the air duct switch 13, the actuator is connected to the air duct switch 13, and the actuator is connected to the PCB circuit board 7.

[0063] The beneficial effect of adopting the above further scheme is: the actuator is used to drive the opening and closing of the air duct switch according to the control instructions of the circuit board, thereby improving the automation capability of the cooling system, improving the user experience, and extending the battery life.

[0064] The air duct switch is connected to the BMS management system in the battery pack. The BMS electrical equipment in the battery pack detects that the cell temperature is too high based on the cell pole temperature collection point, and then controls the air duct switch to open for heat dissipation.

[0065] Furthermore, a port of the heat dissipation air duct 12 is arranged opposite to a front air intake grille of the vehicle.

[0066] The heat dissipation air duct is connected to the front air intake grille of the vehicle.

[0067] In addition, the present invention also provides a vehicle, which includes a vehicle battery PACK structure as described in any one of the above.

[0068] The beneficial effect of adopting the above further solution is: multiple battery cells are installed in series through the rod body, so that the battery cells have the same degree of fixation, thereby improving the stability and reliability of the battery cells.

[0069] Among them, the vehicle can be an electric car, an electric car, an electric motorcycle, etc.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle battery PACK structure, characterized in that: include: A plurality of battery cells (1), a rod body (2) for connecting the plurality of battery cells (1), and a shell (3), The plurality of battery cells (1) are arranged along the axis direction of the rod body (2), the battery cells (1) are connected to the rod body (2), and the plurality of battery cells (1) are placed in the shell (3) and connected to the shell (3); It also comprises: a spacing component (4) for spacing two adjacent battery cells (1) apart, the spacing component (4) being arranged between the two adjacent battery cells (1); The spacing component (4) comprises: a heating plate (5) and a buffer pad (6), wherein the heating plate (5) and the buffer pad (6) are integrally formed; It also comprises: a PCB circuit board (7), the PCB circuit board (7) being arranged on the top of the battery cell (1), a plurality of battery cell poles (8) being arranged on the battery cell (1), the battery cell poles (8) being connected to the PCB circuit board (7), and the PCB circuit board (7) being connected to the heating plate (5); a cover body (11) adapted to the housing (3), the cover body (11) and the housing (3) both being provided with a heat dissipation duct (12) for dissipating heat, and a duct switch (13) for opening and closing the heat dissipation duct being provided at a port of the heat dissipation duct (12); The connection between the PCB circuit board (7) and the battery cell pole is made by laser welding, so that no wiring harness is required in the battery pack; The top of the spacing component (4) is connected to the rod body (2).

2. A vehicle battery PACK structure according to claim 1, characterized in that: The spacing component (4) abuts against two adjacent battery cells (1).

3. A vehicle battery PACK structure according to claim 1, characterized in that: The PCB circuit board (7) is integrated with a high-voltage connector, a low-voltage communication connector, a low-voltage acquisition device, a temperature acquisition device and a BMS control device (14).

4. A vehicle battery PACK structure according to claim 1, characterized in that: Also includes: An actuator for controlling the air duct switch (13), the actuator being connected to the air duct switch (13), and the actuator being connected to the PCB circuit board (7).

5. A vehicle battery PACK structure according to claim 1, characterized in that: The port of the heat dissipation air duct (12) is arranged opposite to the front air intake grille of the vehicle.

6. A vehicle, characterized in that: A vehicle battery PACK structure comprising any one of claims 1 to 5.

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