Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, the battery pack comprises a battery, a box body, a connecting structure and a domain controller, the box body comprises a lower shell and an upper cover, and a first accommodating space is formed between the upper cover and the lower shell and is used for placing the battery. The connecting structure is fixedly connected to the end of the lower shell in the length direction and provided with a second containing space, and the second containing space communicates with the first containing space. The domain controller and the connecting structure are inserted in the length direction of the box body, and at least part of the domain controller is located in the second containing space. The battery and the domain controller are located in different containing spaces respectively, and physical isolation between the battery and the domain controller is achieved. The domain controller is connected with the connecting structure in an inserted mode, so that the domain controller can be independently exposed, the domain controller can be directly overhauled, the first containing space does not need to be opened to expose the battery, the convenience of overhauling the battery pack is improved, and damage to the box body structure when the battery pack is overhauled is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicles, and in particular to a battery pack and a vehicle. BACKGROUND

[0002] The power distribution unit, micro control unit and battery management system of the conventional battery pack are mostly independent and mostly integrated in the battery pack. In some cases, such as insurance burnout or relay sticking, the battery pack needs to be disassembled from the vehicle first, and then the battery pack is disassembled and repaired. When the battery pack is disassembled and repaired, the battery module is exposed to the outside, which has a high safety risk and foreign object control risk, and the disassembly gap will damage the sealed environment inside the battery pack. Therefore, the conventional battery pack has the problem of difficult maintenance.

[0003] The domain control units of the conventional battery pack are separated from each other, and each domain control unit needs a separate shell structure in structure, which not only increases the manufacturing cost and weight, but also needs more connectors and wire harnesses to connect between the domain control units, which is high in cost. SUMMARY

[0004] The present application provides a battery pack and a vehicle to solve at least some problems in the related art.

[0005] In one aspect, the present application provides a battery pack, comprising:

[0006] a battery;

[0007] a box body comprising a lower shell and an upper cover, the upper cover being detachably connected with the lower shell, a first accommodating space being formed between the upper cover and the lower shell for placing the battery;

[0008] a connecting structure fixedly connected to an end of the lower shell in the length direction, the connecting structure having a second accommodating space, the second accommodating space being in communication with the first accommodating space;

[0009] a domain controller inserted with the connecting structure in the length direction of the box body and at least partially located in the second accommodating space.

[0010] Optionally, the lower shell comprises a first shell section and a second shell section connected in the length direction of the lower shell; wherein the first shell section and the upper cover are detachably connected to form the first accommodating space, the connecting structure is at least partially located in the second shell section, and the second shell section supports the connecting structure.

[0011] Optionally, the connecting structure comprises a receiving shell and a connecting plate extending from the outside of the receiving shell, the receiving shell forms the second receiving space, the second shell section supports the receiving shell, the receiving shell comprises a first opening and a second opening opposite to each other, the second opening is closer to the first shell section relative to the first opening in the length direction of the lower shell, the connecting plate protrudes from the upper edge of the second opening in a direction away from the first opening, and is detachably connected with the upper cover.

[0012] Optionally, the height of the first opening is greater than the height of the second opening and higher than the height of the lower shell.

[0013] Optionally, the receiving shell comprises a first mounting flange protruding from the edge of the first opening, the side of the domain controller facing the connecting structure comprises a second mounting flange, and the domain controller and the connecting structure are connected through the first mounting flange and the second mounting flange.

[0014] Optionally, the side of the domain controller facing the connecting structure is provided with an inner frame, the inner frame comprises a bottom frame, a first side frame and a second side frame, the bottom frame abuts against the inner bottom wall of the connecting structure, and the first side frame and the second side frame respectively abut against the inner side walls of the connecting structure.

[0015] Optionally, a first connector is arranged in the first receiving space, a second connector is arranged in the domain controller, and the first connector and the second connector are connected when the domain controller and the connecting structure are plugged together.

[0016] Optionally, the domain controller comprises a power distribution unit, a micro control unit and a battery management system.

[0017] Optionally, the side of the domain controller facing away from the connecting structure is provided with an access hole.

[0018] Another aspect of the present application provides a vehicle comprising:

[0019] An electric motor;

[0020] A battery pack connected with the electric motor, for supplying power to the electric motor.

[0021] The battery pack provided by the application comprises a battery, a box body, a connecting structure and a domain controller. The box body comprises a lower shell and an upper cover, and a first accommodating space is formed between the upper cover and the lower shell and can be used to place the battery. The connecting structure is fixedly connected to the end of the length direction of the lower shell, and the connecting structure has a second accommodating space and can be used to place the domain controller. The second accommodating space and the first accommodating space are communicated, so that the electrical connection between the battery pack and the domain controller can be realized in the first accommodating space or the second accommodating space, and the communication function of the battery pack and the domain controller can be realized.

[0022] The domain controller and the connecting structure are inserted in the length direction of the box body, and the insertion mode is convenient for connecting the domain controller and the connecting structure. The domain controller and the connecting structure are inserted in the length direction of the box body, and the thickness of the battery pack is not increased. At least part of the domain controller is located in the second accommodating space, so that the accommodating space is provided for the domain controller and the domain controller is protected.

[0023] The battery and the domain controller of the battery pack provided by the application are located in different accommodating spaces, the battery is located in the first accommodating space, and the domain controller is located in the second accommodating space, so that the physical isolation between the battery and the domain controller is realized. The domain controller is inserted with the connecting structure, so that the domain controller can be independently exposed and can be directly overhauled without opening the first accommodating space to expose the battery. Not only the convenience of overhauling the battery pack is greatly improved, but also the damage to the box body structure during overhauling the battery pack is effectively avoided, and the service life and stability of the battery pack are improved.

[0024] 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

[0025] The drawings incorporated into the specification and forming part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0026] Figure 1 The battery pack shown in the perspective structural schematic view of an embodiment.

[0027] Figure 2 The battery pack shown in the perspective structural schematic view of an embodiment. Figure 1 The battery pack shown in the perspective structural schematic view of an embodiment.

[0028] Figure 3 The battery pack shown in the perspective structural schematic view of an embodiment. Figure 1 The lower shell of the battery pack shown in the structural schematic view of an embodiment.

[0029] Figure 4 The connecting structure of the battery pack shown in the structural schematic view of an embodiment. Figure 1 The connecting structure of the battery pack shown in the structural schematic view of an embodiment.

[0030] Figure 5 for Figure 1 The diagram shows the structural schematic of the lower casing and connecting structure of the battery pack.

[0031] Figure 6 for Figure 1 The diagram shows the structure of the domain controller for the battery pack.

[0032] Figure 7 for Figure 1 The diagram shows the domain controller and connection structure of the battery pack.

[0033] Reference numerals: Battery pack 10, housing 20, lower housing 21, first housing segment 211, second housing segment 212, top cover 22, first receiving space 101, second receiving space 102, connecting structure 30, receiving housing 31, connecting plate 32, first opening 301, second opening 302, first mounting flange 33, domain controller 40, second mounting flange 41, inner frame 42, bottom frame 421, first side frame 422, second side frame 423. Detailed Implementation

[0034] This application provides a battery pack and a vehicle, which will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0035] This application provides a battery pack, including: a battery.

[0036] The housing includes a lower shell and an upper cover, the upper cover and the lower shell being detachably connected, forming a first receiving space between the upper cover and the lower shell for placing the battery.

[0037] A connecting structure is fixedly connected to the end of the lower housing along its length. The connecting structure has a second accommodating space, which is connected to the first accommodating space.

[0038] The domain controller is plugged into the connection structure along the length of the enclosure and is at least partially located within the second housing space.

[0039] The battery pack provided in this application includes a battery, a housing, a connection structure, and a domain controller. The housing comprises a lower casing and a top cover, with a first receiving space formed between the top cover and the lower casing for housing the battery. The connection structure is fixedly connected to the longitudinal end of the lower casing, and has a second receiving space for housing the domain controller. By connecting the second and first receiving spaces, an electrical connection between the battery pack and the domain controller can be established within either the first or second receiving space, enabling communication between the battery pack and the domain controller. The domain controller is inserted into the connection structure along the longitudinal direction of the housing, facilitating insertion without increasing the thickness of the battery pack. At least a portion of the domain controller is located within the second receiving space, providing housing space and protection for the domain controller.

[0040] The battery pack provided in this application has the battery and domain controller located in separate housings. The battery is located in the first housing space, and the domain controller is located in the second housing space, achieving physical isolation between the battery and the domain controller. The domain controller is plugged into the connection structure, allowing it to be independently exposed and directly inspected without opening the first housing space and exposing the battery. This not only greatly improves the convenience of battery pack maintenance but also effectively avoids damage to the enclosure structure during battery pack maintenance, thereby improving the battery pack's lifespan and stability.

[0041] Please also refer to Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural schematic diagram of a battery pack 10 according to one embodiment. Figure 2 for Figure 1 An exploded view of the battery pack 10 is shown. Figure 1 and Figure 2 As shown, the battery pack 10 provided in this application includes a battery, a housing 20, a connection structure 30, and a domain controller 40.

[0042] The housing 20 includes a lower shell 21 and an upper cover 22. The upper cover 22 is detachably connected to the lower shell 21, forming a first accommodating space 101 between the upper cover 22 and the lower shell 21 for placing batteries. In this embodiment, both the lower shell 21 and the upper cover 22 have a recessed structure, with the opening of the lower shell 21 facing upwards and the opening of the upper cover 22 facing downwards. This allows for a larger first accommodating space 101 between the lower shell 21 and the upper cover 22, facilitating the placement and removal of batteries and the maintenance of the placed batteries. In this embodiment, the lower shell 21 and the upper cover 22 are detachably connected by fastening screws, which not only makes installation and disassembly convenient but also ensures a secure installation, resulting in a stable structure for the housing 20 after installation.

[0043] The connecting structure 30 is fixedly connected to the end of the lower housing 21 along its length. The connecting structure 30 has a second receiving space 102, which communicates with the first receiving space 101. By fixing the connecting structure 30 to the end of the lower housing 21 along its length, and by having the second receiving space 102, the domain controller 40 can be placed. By communicating the second receiving space 102 with the first receiving space 101, an electrical connection between the battery pack 10 and the domain controller 40 can be achieved within either the first receiving space 101 or the second receiving space 102, enabling communication between the battery pack 10 and the domain controller 40.

[0044] Domain controller 40 and connection structure 30 are inserted into each other along the length of enclosure 20, and are at least partially located within the second receiving space 102. This insertion method facilitates the connection between domain controller 40 and connection structure 30 along the length of enclosure 20. This insertion method does not increase the thickness of battery pack 10. By placing at least a portion of domain controller 40 within the second receiving space 102, storage space is provided for domain controller 40, thus protecting it.

[0045] The battery pack 10 provided in this application has the battery and domain controller 40 located in different storage spaces. The battery is located in the first storage space 101, and the domain controller 40 is located in the second storage space 102, achieving physical isolation between the battery and the domain controller 40. The domain controller 40 is plugged into the connection structure 30, allowing the domain controller 40 to be independently exposed and directly inspected without opening the first storage space 101 and exposing the battery. This not only greatly improves the convenience of battery pack 10 maintenance but also effectively avoids damage to the enclosure 20 structure during battery pack 10 maintenance, thereby improving the lifespan and stability of the battery pack 10.

[0046] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 for Figure 1 The diagram shows the structure of the lower housing 21 of the battery pack 10. Figure 4 for Figure 1 The diagram shows the structural schematic of the connection structure 30 of the battery pack 10. Figure 5 for Figure 1 The diagram shows the structure of the lower housing 21 and the connecting structure 30 of the battery pack 10.

[0047] like Figures 3 to 5As shown, the lower housing 21 includes a first housing segment 211 and a second housing segment 212 connected along its length. The first housing segment 211 and the second housing segment 212 are integrally formed. Here, dividing the lower housing 21 into the first housing segment 211 and the second housing segment 212 connected along its length is not a true structural division of the lower housing 21, but merely a functional arrangement to include the first housing segment 211 and the second housing segment 212 connected along its length. The first housing segment 211 and the upper cover 22 are detachably connected to form a first accommodating space 101. The connecting structure 30 is at least partially located within the second housing segment 212, and the second housing segment 212 supports the connecting structure 30. By having the connecting structure 30 at least partially located within the second housing segment 212, and the second housing segment 212 supporting the connecting structure 30, the load-bearing capacity and structural stability of the connecting structure 30 can be improved.

[0048] In some embodiments, the connecting structure 30 and the second housing segment 212 are welded together. The welding connection can make the connection between the connecting structure 30 and the second housing segment 212 firm and tight, thereby achieving a waterproof function.

[0049] The connecting structure 30 includes a housing 31 and a connecting plate 32 extending from the outside of the housing 31. The housing 31 forms a second receiving space 102, and a second housing segment 212 supports the housing 31. The housing 31 includes a first opening 301 and a second opening 302 opposite to each other. The second opening 302 is closer to the first housing segment 211 relative to the first opening 301 in the length direction of the lower housing 21. That is, the second opening 302 is closer to the second housing segment 212, and the first opening 301 is closer to the domain controller 40. The first opening 301 and the second opening 302 communicate to facilitate an electrical connection between the domain controller 40 and the battery pack 10. The connecting plate 32 protrudes from the upper edge of the second opening 302 in a direction away from the first opening 301, and the connecting plate 32 is detachably connected to the upper cover 22 to support the upper cover 22. In some embodiments, the connecting plate 32 is provided with screw holes, and the upper cover 22 is also provided with screw holes. The connecting plate 32 and the upper cover 22 are detachably connected by fastening bolts and screw holes.

[0050] like Figures 3 to 5As shown, the height of the first opening 301 is greater than the height of the second opening 302, and is also higher than the height of the lower housing 21. By making the height of the first opening 301 greater than the height of the second opening 302, that is, the opening of the connecting structure 30 facing the domain controller 40 is larger than the opening of the connecting structure 30 facing the second housing segment 212. In this way, when the domain controller 40 is plugged into the connecting structure 30 through the first opening 301, the size of the domain controller 40 can be increased, allowing the domain controller 40 to integrate more control units. Furthermore, because the height of the top of the upper cover 22 is greater than the height of the top of the lower housing 21, by making the height of the first opening 301 greater than the height of the second opening 302, the height of the domain controller 40 can be increased, and the space between the top of the upper cover 22 and the top of the lower housing 21 can be utilized to improve the space utilization of the battery pack 10 and make the structure of the battery pack 10 more compact.

[0051] Please refer to Figure 4 , Figure 6 and Figure 7 , Figure 6 for Figure 1 The diagram shows the structure of the domain controller 40 of the battery pack 10. Figure 7 for Figure 1 The diagram shows the structure of the domain controller 40 and the connection structure 30 of the battery pack 10.

[0052] The housing 31 includes a first mounting flange 33 protruding from the edge of the first opening 301, and the side of the domain controller 40 facing the connection structure 30 includes a second mounting flange 41. The first mounting flange 33 and the second mounting flange 41 are of corresponding size. The domain controller 40 and the connection structure 30 are connected via the first mounting flange 33 and the second mounting flange 41. In some embodiments, the first mounting flange 33 and the second mounting flange 41 are provided with corresponding bolt holes, and the first mounting flange 33 and the second mounting flange 41 are detachably connected via bolt holes and bolts, thereby achieving a detachable connection between the connection structure 30 and the domain controller 40.

[0053] like Figure 6As shown, the domain controller 40 has an inner frame 42 on the side facing the connection structure 30. The inner frame 42 includes a bottom frame 421, a first side frame 422, and a second side frame 423. The bottom frame 421 abuts against the inner bottom wall of the connection structure 30, and the first side frame 422 and the second side frame 423 abut against the inner side wall of the connection structure 30, respectively. When the domain controller 40 and the connection structure 30 are inserted, the bottom frame 421, the first side frame 422, and the second side frame 423 can serve as guides, allowing the domain controller to be inserted and connected to the connection structure 30 along the length direction of the lower housing 21. After the domain controller 40 and the connection structure 30 are inserted, the bottom frame 421, the first side frame 422, and the second side frame 423 abut against the inner bottom wall and the inner side wall of the connection structure 30, respectively, supporting the domain controller 40 and, together with bolts, ensuring a secure connection between the domain controller and the connection structure 30.

[0054] In this embodiment, a first connector is provided within the first accommodating space 101, and a second connector is provided within the domain controller 40. When the domain controller 40 and the connection structure 30 are plugged in, the first connector and the second connector are connected. The first connector includes a first high-voltage connector and a first low-voltage connector, and the second connector includes a second high-voltage connector and a second low-voltage connector. When the domain controller 40 and the connection structure 30 are plugged in, the second high-voltage connector is electrically connected to the first high-voltage connector, and the second low-voltage connector is electrically connected to the first low-voltage connector. This achieves electrical and communication connections between the battery and the domain controller.

[0055] In this embodiment, the domain controller 40 includes a power distribution unit, a microcontroller unit, and a battery management system. The power distribution unit manages the power distribution within the vehicle, ensuring that different subsystems, such as the electric drive, battery management system, and onboard electronics, receive adequate power. It monitors current, voltage, and power distribution to optimize energy use and system efficiency, preventing overload or power shortages. The microcontroller unit is the "brain" of the domain controller 40, responsible for performing control and computation tasks. It receives information from various sensors and actuators, processes data, and makes decisions and controls based on preset algorithms. The battery management system monitors and manages the battery pack's status, ensuring battery health, efficiency, and safety. This includes controlling the battery's charging and discharging processes, monitoring battery voltage, temperature, SOC, and SOH, and optimizing battery efficiency based on real-time data to extend battery life. In addition to the power distribution unit, microcontroller unit, and battery management system, the domain controller 40 also includes an onboard charger unit, a motor controller unit, etc. This application does not impose any limitations on these components.

[0056] In some embodiments, the domain controller 40 has a maintenance port on the side facing away from the connection structure 30. This allows for maintenance of the domain control units within the domain controller 40 under certain operating conditions via the maintenance port. For certain domain control units that cannot be maintained through the maintenance port, the domain controller 40 can be separated from the connection structure 30 for further maintenance. This further improves the ease of maintenance of the domain controller 40 and reduces the adverse effects of disassembly on the battery pack 10.

[0057] This application also provides a vehicle including a motor and a battery pack 10, wherein the battery pack 10 is connected to the motor and is used to supply power to the motor. Since the vehicle employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0058] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0059] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that, include: Battery; The housing includes a lower shell and an upper cover, the upper cover being detachably connected to the lower shell, and a first receiving space being formed between the upper cover and the lower shell for placing a battery; A connecting structure is fixedly connected to the end of the lower housing along its length. The connecting structure has a second accommodating space, which is connected to the first accommodating space. A domain controller is inserted into the connection structure along the length of the enclosure and is at least partially located within the second accommodating space.

2. The battery pack according to claim 1, characterized in that, The lower housing includes a first housing segment and a second housing segment connected along the length of the lower housing; wherein the first housing segment and the upper cover are detachably connected to form the first accommodating space, and the connecting structure is at least partially located within the second housing segment, and the second housing segment supports the connecting structure.

3. The battery pack according to claim 2, characterized in that, The connecting structure includes a housing and a connecting plate extending from the outside of the housing. The housing forms the second receiving space. The second housing segment supports the housing. The housing includes a first opening and a second opening opposite each other. The second opening is closer to the first housing segment relative to the first opening in the length direction of the lower housing. The connecting plate protrudes from the upper edge of the second opening in a direction away from the first opening and is detachably connected to the upper cover.

4. The battery pack according to claim 3, characterized in that, The height of the first opening is greater than the height of the second opening, and is also greater than the height of the lower housing.

5. The battery pack according to claim 3, characterized in that, The housing includes a first mounting flange protruding from the edge of the first opening, and the domain controller includes a second mounting flange on the side facing the connection structure. The domain controller and the connection structure are connected via the first mounting flange and the second mounting flange.

6. The battery pack according to claim 1, characterized in that, The domain controller has an inner frame on one side facing the connection structure. The inner frame includes a bottom frame, a first side frame, and a second side frame. The bottom frame abuts against the inner bottom wall of the connection structure, and the first side frame and the second side frame abut against the inner side wall of the connection structure, respectively.

7. The battery pack according to claim 1, characterized in that, The first accommodating space is provided with a first connector, and the domain controller is provided with a second connector. When the domain controller and the connection structure are plugged in, the first connector and the second connector are connected.

8. The battery pack according to claim 1, characterized in that, The domain controller includes a power distribution unit, a microcontroller unit, and a battery management system.

9. The battery pack according to claim 1, characterized in that, The domain controller has an access port on the side facing away from the connection structure.

10. A vehicle, characterized in that, include: Electric motor; and The battery pack as described in any one of claims 1 to 9 is connected to the motor for supplying power to the motor.

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