ชุดแบตเตอรี่และยานพาหนะ
Patent Information
- Authority / Receiving Office
- TH · TH
- Patent Type
- Applications
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2021-01-28
- Publication Date
- 2026-07-06
AI Technical Summary
In traditional electric vehicles, the maintenance process of high-voltage distribution boxes is cumbersome and time-consuming, and the entire battery pack needs to be disassembled for maintenance.
Design a battery pack with an access opening on the bottom plate, allowing the access cover to be removed to expose the distribution box, avoiding disassembly of the entire battery pack, thereby simplifying the maintenance process.
By arranging an inspection port on the bottom plate of the battery pack, the process of inspecting the distribution box is simplified, reducing inspection time and improving efficiency.
Smart Images
Figure 00000004_0000 
Figure 00000004_0001 
Figure 00000005_0000
Abstract
Description
Battery packs and vehicles Cross-references to related applications This application claims priority to Chinese Patent Application No. 202020255112.2, filed on March 4, 2020, entitled "Battery Pack and Vehicle". Technical Field This application relates to the field of vehicle technology, and more particularly to a battery pack and a vehicle. Background Technology With the increasing popularity of new energy vehicles, electric vehicles are coming into view more and more. The power battery pack in an electric vehicle generally includes a housing and a high-voltage distribution box installed inside the housing. The high-voltage distribution box houses various components used for power generation, transmission, distribution, or energy conversion of the power battery pack. In traditional technology, the high-voltage distribution box is built into the casing. When maintenance personnel need to inspect the high-voltage distribution box inside the power battery pack, they need to first remove the entire power battery pack from the electric vehicle before they can carry out the inspection and maintenance operation on the high-voltage distribution box. This makes the inspection and maintenance of the high-voltage distribution box cumbersome and time-consuming. Application content To address the cumbersome process of overhauling distribution boxes, this application provides a battery pack with an access port for overhauling distribution boxes on its base plate. This avoids disassembling the entire battery pack during distribution box maintenance, thus simplifying the process. This application further proposes a vehicle. In a first aspect, this application provides a battery pack. The battery pack includes a housing, a battery cell assembly, and a distribution box detachably mounted on the housing. The housing has a receiving space, in which the battery cell assembly and the distribution box are both received, and the battery cell assembly is electrically connected to the distribution box. The housing includes a base plate and a maintenance cover. The base plate has a maintenance port communicating with the receiving space. The distribution box is positioned opposite the maintenance port. The maintenance cover is detachably mounted on the base plate and covers the maintenance port. In some examples of this application, the housing further includes an upper cover and a frame, the upper cover being disposed opposite to the bottom plate, the frame being connected between the upper cover and the bottom plate, and the bottom plate, the inspection cover, the frame, and the upper cover together forming a closed receiving space. In some examples of this application, the battery cell assembly is mounted on the base plate and is arranged alternately with the access port. In some examples of this application, the housing further includes a fixing plate, the distribution box is detachably mounted on the fixing plate, the fixing plate is mounted on the frame or the base plate, and at least a portion of the fixing plate is located between the battery pack and the distribution box. In some examples of this application, the fixing plate includes a first fixing plate and a second fixing plate connected to the first fixing plate, the first fixing plate being located between the battery cell assembly and the distribution box, and the second fixing plate being located between the distribution box and the upper cover plate. In some examples of this application, the base plate includes a first side and a second side disposed opposite to each other, the access port is closer to the second side than the first side, and the first fixing plate is closer to the second side than the first side. In some examples of this application, the fixing plate and the base plate are both made of insulating material, and the frame is made of metal material. In some examples of this application, the upper cover plate has a raised ridge on the side away from the bottom plate, and the raised ridge protrudes from the surface of the upper cover plate toward the side away from the bottom plate. In some examples of this application, the distribution box includes multiple components, all of which are detachably installed within the housing, and all of which are exposed relative to the access port. Secondly, this application also provides a vehicle. The vehicle body and the battery pack described above are mounted on the vehicle body, and the access cover is exposed relative to the vehicle body. In this embodiment of the application, the access panel is located on the base plate, so that when maintenance personnel inspect the distribution box, they only need to remove the inspection cover from the base plate to expose the distribution box, thereby enabling maintenance operations on the distribution box, simplifying the process of inspecting the distribution box in the battery pack and reducing maintenance time. 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 Figure 1 is a schematic diagram of the battery structure provided in an embodiment of this application; Figure 2 is a schematic diagram of the exploded structure of the battery pack shown in Figure 1; Figure 3 is a partial exploded structural diagram of the battery pack shown in Figure 1; Figure 4 is a structural schematic diagram of the structure shown in Figure 3 from another angle; Figure 5 is a partial structural schematic diagram of the battery cell assembly shown in Figure 1. Detailed Implementation The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Unless otherwise specified, the embodiments and features of the embodiments of this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. This application provides a vehicle. The vehicle includes a vehicle body and a battery pack 100. The battery pack 100 is mounted on the vehicle body. The battery pack 100 can provide energy for the vehicle. The vehicle can be a pure electric vehicle or a hybrid electric vehicle. The battery pack 100 can be, but is not limited to, a lithium battery. Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of the battery pack 100 provided in an embodiment of this application; Figure 2 is an exploded structural schematic diagram of the battery pack 100 shown in Figure 1. The battery pack 100 includes a housing, a cell assembly 20, and a distribution box 30 detachably mounted on the housing. The cell assembly 20 is electrically connected to the distribution box 30. The distribution box 30 may be, but is not limited to, a high-voltage distribution box 30. The distribution box 30 includes multiple components. These components may be power distribution units (PDUs), battery disconnect units (BDUs), battery management systems (BMSs), manual service disconnect switches (MSDs), or relays, etc., used to control the power generation, transmission, distribution, or energy conversion functions of the cell assembly 20. The housing has a receiving space 101. Both the battery cell assembly 20 and the distribution box 30 are housed within the receiving space 101. That is, the distribution box 30 and the battery cell assembly 20 are integrated within the housing. Since the distribution box 30 includes various components, integrating it with the battery cell assembly 20 within the housing avoids the safety hazards caused by an externally located distribution box 30 and reduces the risk of leakage. Simultaneously, housing the distribution box 30 within the housing improves the utilization of the storage space, thereby increasing the overall space utilization of the vehicle. Please refer to Figures 2 and 3. Figure 3 is a partial exploded structural diagram of the battery pack 100 shown in Figure 1. The housing includes a base plate 11 and an access cover 12. The base plate 11 supports the battery cell assembly 20. Understandably, the battery cell assembly 20 is mounted on the base plate 11. The base plate 11 has an access port 110. The access port 110 connects to the receiving space 101. The access cover 12 is detachably mounted on the base plate 11 and covers the access port 110. The distribution box 30 faces the access port 110. Understandably, when the access cover 12 is removed from the base plate 11, the distribution box 30 is exposed relative to the access port 110. In this embodiment, the inspection port 110 is provided on the base plate 11, so that when maintenance personnel inspect the distribution box 30, they only need to remove the inspection cover 12 from the base plate 11 to expose the distribution box 30, thereby enabling maintenance operations on the distribution box 30. This simplifies the process of inspecting the distribution box 30 in the battery pack 100 and reduces maintenance time. The inspection cover 12 and the base plate 11 can be detachably connected by any one of the following methods, including but not limited to threaded connection, snap-fit connection or hinge connection. As shown in Figure 3, the battery pack 100 includes a fastener 40. The fastener 40 is used to mount the access cover 12 to the base plate 11. In this embodiment, the fastener 40 is described as a screw. When maintenance personnel inspect the distribution box 30, they only need to remove the fastener 40 to remove the access cover 12, making the process of removing the access cover 12 simple and convenient. In one embodiment, multiple components are detachably installed inside the housing, and all multiple components are exposed relative to the access port 110. In this embodiment, multiple components in the distribution box 30 are exposed relative to the inspection port 110 and can be detachably installed in the housing. This allows the distribution box 30 to be repaired by simply removing the components that need to be replaced, thus avoiding the need to replace the entire distribution box 30 and saving resources. Please refer to Figures 2 and 4 together. Figure 4 is a structural schematic diagram of the structure shown in Figure 3 from another angle. The housing also includes an upper cover plate 13 and a frame 14. The upper cover plate 13 is disposed opposite to the bottom plate 11. The frame 14 connects the upper cover plate 13 and the bottom plate 11. The bottom plate 11, the inspection cover 12, the frame 14, and the upper cover plate 13 together form a closed receiving space 101. The frame 14 and the bottom plate 11 can be fixed by adhesive or bolts. Fixing the frame 14 and the bottom plate 11 by bolts is more reliable. In this embodiment, the battery cell assembly 20 and the distribution box 30 are placed in a closed containment space 101, so that the casing can play a role in dust and water protection, effectively protecting the battery cell assembly 20 and the distribution box 30, and extending the service life of the battery cell assembly 20 and the distribution box 30. The battery pack 100 is typically installed under the vehicle. When the battery pack 100 is installed on the vehicle body, the upper cover 13 is installed on the vehicle body, and the bottom plate 11 faces downwards towards the bottom surface, making the upper cover 13 invisible from the vehicle body, while the bottom plate 11 is visible from the vehicle body. That is, when the battery pack 100 is installed on the vehicle body, the inspection cover 12 is exposed from the vehicle body. If the access port 110 is located on the upper cover plate 13, when maintenance personnel inspect the distribution box 30, they still need to remove the entire battery pack 100 from the vehicle body before they can inspect the distribution box 30. This inspection process is still cumbersome and time-consuming. However, in this embodiment, the access port 110 is located on the bottom plate 11, which is visible from the vehicle body. This allows maintenance personnel to inspect the distribution box 30 in the battery pack 100 installed in the vehicle body without having to remove the entire battery pack 100 from the vehicle body and then disassemble the casing. They only need to remove the access cover 12 from the bottom of the vehicle body to inspect the distribution box 30, making the inspection process simple and less time-consuming. In one embodiment, the battery cell assembly 20 is mounted on the base plate 11 and is arranged alternately with the access port 110. That is, the battery cell assembly 20 is not exposed relative to the access port 110. In this embodiment of the application, when maintenance personnel remove the inspection cover 12 to inspect the distribution box 30, the inspection port 110 only exposes the distribution box 30, so as to avoid the battery cell group 20 being exposed relative to the inspection port 110 and affecting the battery cell group 20. Further, please refer to Figures 2 and 5. Figure 5 is a partial structural schematic diagram of the battery cell assembly 20 shown in Figure 1. The housing also includes a mounting plate 15. The distribution box 30 is detachably mounted on the mounting plate 15. The mounting plate 15 is mounted on the frame 14 or the base plate 11, and at least part of the mounting plate 15 is located between the battery cell assembly 20 and the distribution box 30. The distribution box 30 can be fixed to the frame 14 or the base plate 11 by means of bolts, rivets or adhesive. During the assembly of the battery pack 100, the distribution box 30 is detachably installed on the fixing plate 15, and then the fixing plate 15 is installed on the frame 14 or the base plate 11, thereby fixing the position of the distribution box 30 relative to the shell. Please refer to Figure 5. The fixing plate 15 includes a first fixing plate 151 and a second fixing plate 152 connected to the first fixing plate 151. The first fixing plate 151 is located between the battery cell assembly 20 and the distribution box 30. The second fixing plate 152 is located between the distribution box 30 and the top cover plate 13. It can be understood that the fixing plate 15 is L-shaped. The first fixing plate 151 is used not only for mounting on the frame 14 or the base plate 11, but also for separating the battery cell assembly 20 and the distribution box 30. The second fixing plate 152 is used to mount the distribution box 30. In this embodiment, the first fixing plate 151 is spaced between the power distribution box 30 and the battery cell group 20 to avoid mutual interference between the signals of the battery cell group 20 and the power distribution box 30, thereby ensuring the reliability of the battery pack 100. In one embodiment, both the fixing plate 15 and the base plate 11 are made of insulating material. The frame 14 is made of metal. Understandably, the first fixing plate 151, the second fixing plate 152, and the inspection cover 12 surrounding the distribution box 30 are all made of insulating material. The frame 14 is made of a relatively hard metal, serving to protect the internal battery cell assembly 20 and the distribution box 30 from impact. In this embodiment, components made of insulating material surround the distribution box 30, serving to insulate and protect the distribution box 30. In one embodiment, the upper cover plate 13 has a protruding ridge 131 on the side opposite to the bottom plate 11. The protruding ridge 131 protrudes from the surface of the upper cover plate 13 toward the side away from the bottom plate 11. In this embodiment, the upper cover plate 13 is provided with a raised ridge 131 protruding from the surface of the upper cover plate 13, which not only increases the capacity of the receiving space 101, but also makes the upper cover plate 13 more elastic, thereby protecting the battery cell assembly 20. Further, referring to Figure 5, the base plate 11 includes a first side 111 and a second side 112 arranged opposite to each other. The access port 110 is closer to the second side 112 than the first side 111, and the first fixing plate 151 is also closer to the second side 112 than the first side 111. It can be understood that the access port 110 is located at the edge of the base plate 11, near the side of the frame 14. That is, the distribution box 30 is located at the edge of the base plate 11, near the side of the frame 14. In this embodiment, the access port 110 is located at the edge of the base plate 11, that is, the distribution box 30 is located at the edge of the base plate 11, which does not affect the internal structure and overall arrangement of the battery pack 100. The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
DEPCT6628 / 11 / 25651. A battery assembly comprising a housing, cell groups, and a power distribution box mounted in a removable manner on the housing, where the housing defines the intake openings, both the cell groups and the power distribution box are received into the intake openings, and the cell groups are connected to the power distribution box. The housing comprises a bottom plate and an access cover; the bottom plate defines the access passages, the access passages are in contact with the intake openings, the power distribution box is oriented towards the access passages, and the access cover is mounted in a removable manner on the bottom plate and covers the access passages.2.
1. The battery pack under claim 1 where the enclosure also includes a top cover plate and side frame, the top cover plate is positioned opposite the bottom plate, the side frame is connected between the top cover plate and the bottom plate, the access cover, the side frame and the top cover plate together define the boundaries of the sealed access opening.
3. The battery pack under claim 2 where the cell group is mounted on the bottom plate and arranged in an alternating manner with the access opening.
4. The battery pack under claim 3 where the enclosure also includes a retaining plate, the power distribution box is mounted in a removable manner on the retaining plate, the retaining plate is mounted on the side frame or the bottom plate and at least part of the retaining plate is positioned between the cell group and the power distribution box. 5.
6. The battery pack under claim 4 where the retaining plate consists of retaining plate one and retaining plate two which are connected to retaining plate one, retaining plate one is positioned between the cell group and the power distribution box and retaining plate two is positioned between the power distribution box and the top cover plate.
7. The battery pack under claim 5 where the bottom plate consists of sides one and two which are arranged opposite each other, the access passage is arranged closer to side two than to side one and retaining plate one is arranged closer to side two than to side one.
8. The battery pack under claim 4 where both the retaining plates and the bottom plate are made of insulating material and the side frame is made of metal.
9. A battery pack under claim 2 where one side of the top cover plate, away from the bottom plate, is provided with a convex edge, and this convex edge extends from the surface of the top cover plate to one side of the top cover plate, away from the bottom plate.
10. A battery pack under any of claims 1 through 8 where the power distribution box contains more than one component, all of which are mounted in a removable manner within the enclosure, and such more than one component is exposed relative to the access opening.
11. A vehicle which consists of the vehicle body and a battery pack under any of claims 1 through 9 where the battery pack is mounted on the vehicle body and the access cover is exposed relative to the vehicle body.The battery pack consists of: the main unit, the cell group, and the distribution box mounted on the main unit, where the box defines the receiving area; both the cell group and the distribution box are received in the receiving area, and the cell group is electrically connected to the power supply box. The housing consists of a bottom plate and an access cover. The bottom plate defines the access ports; the access ports are in communication with the receiving area. The distribution box faces the access ports, and the access cover is removable and mounted on the bottom plate and covers the access ports.
2. The battery pack according to claim 1, where the housing consists of a top plate and side frame. The top plate is arranged opposite the bottom plate. The side frame connects the top plate and the bottom plate, and the bottom plate, access cover, side frame, and top plate together define the enclosed receiving area.
3. The battery pack according to claim 2, where the cell group is mounted on the bottom plate and is set with the access ports. 4.
5. Battery pack under claim 4 where the housing, consisting of mounting plates, has the distribution box mounted on a removable mounting plate; the mounting plate is attached to the side frame or the bottom plate; and at least part of the mounting plate is between the cell group and the distribution box.
6. Battery pack under claim 5 where the bottom plate consists of a first and a second mounting plate connected to the first mounting plate; the first mounting plate is between the cell group and the power supply box; and the second mounting plate is located between the distribution box and the top cover plate.
7. Battery pack under claim 4 where both the mounting plate and the bottom plate are made of insulating material; and the side frame is made of metal.
8. Battery pack under claim 2 where the side of the top cover plate is separated from the bottom plate by a raised edge; and this raised edge protrudes from the surface of the top cover plate towards the side of the top cover plate; and the plate is separated from the bottom plate by a distance of 9.
10. A vehicle consisting of: the vehicle body and a battery pack as per any of Relieves 1 to 9, where the power supply box contains numerous components, many of which are removablely mounted in the housing and many of which are exposed relative to the access ports.