Separating plate, solid-state battery pack and vehicle

Abstract

The utility model provides an isolation plate, a solid-state battery pack and a vehicle, and relates to the technical field of vehicles, the isolation plate comprises a plate body, a first end face of the plate body along the thickness direction is configured to be bonded with two side plates arranged in parallel with a battery module; the plate body is provided with a plurality of through holes penetrating through the plate body in the thickness direction, and the through holes are configured to be matched with an installation tool so as to guide the plate body to move towards the two side plates in the thickness direction of the plate body. According to the isolation plate disclosed by the utility model, not only is the assembly efficiency improved, but also the opening of the side plate is avoided, and the overall reliability and safety of the battery module are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an isolation plate, a solid-state battery pack and a vehicle. Background Art

[0002] Currently, in a single battery module, the edges of the separator plates are typically integrally molded with fixing structures such as clips, latches, or screw mounts. Correspondingly, the side panels of the battery module require corresponding holes punched at the clipping locations. During assembly, the separator plate fixing structures are inserted through these holes to mechanically secure the separator plate to the side panels.

[0003] However, there are a large number of fixed structures on the isolation plate, and during assembly, the operator needs to press them one by one to make the fixed structures pass through the corresponding hole structures on the side panels, resulting in low assembly efficiency; at the same time, the fixed structures on the isolation plate require the side panels to be provided with matching openings, which will destroy the continuous sealing structure of the side panels, making it easy for water vapor and conductive particles to invade the interior of the module, thereby causing insulation failure or short circuit, and posing an electrical safety risk. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an isolation plate, a solid-state battery pack and a vehicle.

[0005] In the first aspect, the utility model provides an isolation plate, including a plate body, wherein the first end face of the plate body along the thickness direction is configured to be bonded to two side plates arranged parallel to the battery module; the plate body is provided with a plurality of through holes penetrating the plate body along the thickness direction, and the through holes are configured to cooperate with the installation tooling to guide the plate body to move toward the two side plates along the thickness direction of the plate body.

[0006] Optionally, the plate body is provided with at least one through hole at each of the two ends in the length direction.

[0007] Optionally, the plate body is provided with one through hole at each end in the length direction, and the two through holes are arranged diagonally on the plate body.

[0008] Optionally, the plate body is further provided with a plurality of avoidance holes passing through the plate body along the thickness direction, and the plurality of avoidance holes are arranged in two rows, and each row of avoidance holes is arranged along the length direction of the plate body; the avoidance holes are configured for the battery cell tabs of the battery module to pass through.

[0009] Optionally, the second end face of the plate body along the thickness direction is provided with a plurality of bus bar mounting grooves, and the plurality of bus bar mounting grooves are arranged in two rows, and each row of the bus bar mounting grooves is arranged along the length direction of the plate body; each of the bus bar mounting grooves is provided with at least one avoidance hole.

[0010] Optionally, an inner wall of the avoidance hole extends toward the interior of the corresponding busbar mounting groove to form a surrounding structure, and the surrounding structure is configured to be inserted into the through hole of the busbar of the battery module.

[0011] Optionally, a wire harness fixing structure is provided between the two rows of busbar mounting slots, and the wire harness fixing structure includes a cable tie and a first cable tie hole and a second cable tie hole passing through the plate body, and the cable tie is configured to pass through the first cable tie hole and the second cable tie hole to fix the wire harness.

[0012] Optionally, the first end face is provided with a groove structure; the plate body is provided with a plurality of fixing holes along the thickness direction, the fixing holes are arranged in one-to-one correspondence with the groove structure and are interconnected, and the fixing holes are configured for the connection parts connecting the plate body and the bus of the battery module to pass through.

[0013] In a second aspect, the utility model provides a solid-state battery pack comprising a plurality of battery modules, each of the battery modules comprising a side panel and an isolation panel as described above, wherein one end of the side panel is bent near the isolation panel to form a flange, and the plate body of the isolation panel is bonded to the flange.

[0014] In a third aspect, the present invention provides a vehicle comprising the solid-state battery pack as described above.

[0015] Compared with the related art, the beneficial effects of the present invention are:

[0016] The separator body is bonded to the battery module's side panels, eliminating the need for traditional mechanical fixings (such as clips, latches, or screw mounts). The through-holes in the plate body are designed to work with installation tooling, allowing the separator to quickly and accurately align and bond with the side panels. This reduces the time spent on individual fixings during assembly, simplifies the assembly process, and improves efficiency. Furthermore, bonding maintains the continuity of the side panels, preventing damage to their sealing due to punching holes. This effectively prevents moisture and conductive particles from entering the module, reducing electrical safety risks caused by insulation failure or short circuits, and enhancing the overall reliability and safety of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an isolation plate according to an embodiment of the present utility model;

[0018] Figure 2 This is a partial schematic diagram of a first end surface of an isolation plate according to an embodiment of the present invention;

[0019] Figure 3 This is a partial schematic diagram of the second end surface of the isolation plate according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of a battery module according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the battery pack according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 100. Board body; 101. Through hole; 102. First end face; 103. Second end face; 104. Avoidance hole; 1041. Edge structure; 105. Busbar mounting groove; 106. Fixing hole; 107. Groove structure; 108. Wire harness fixing structure; 1081. Cable tie; 1082. First cable tie hole; 1083. Second cable tie hole; 200. Side panel; 300. Busbar; 400. End plate; 500. Battery module. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0025] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in this utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] In the description of the present invention, it should be understood that the terms "height", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In related art, a single battery module 500 typically has a rectangular structure, primarily comprising a module frame, battery cells, and a CCS assembly. The module frame is enclosed by end plates 400 and side plates 200, with the battery cells housed within. The CCS assembly comprises an insulator, busbars 300, and wiring harness. One end of the insulator is used to mount the busbars 300 and wiring harness, while the other end sits above the battery cells. The battery tabs pass through the insulator and are welded to the busbars 300, establishing an electrical connection between the battery cells and the busbars 300. The insulator also provides insulation. The edges of the insulator are connected to the two side plates 200 of the module frame via multiple fixing structures (such as clips, latches, or screw sockets). To achieve this, holes are pre-punched in the side plates 200 to match these fixing structures. During assembly, operators insert the fixing structures on the insulator into the holes on the side plates 200 one by one to mechanically secure the insulator to the side plates 200.

[0028] However, this mechanical fixing method has some problems. First, there are many fixing structures on the isolation plate. During assembly, the operator needs to press these structures one by one to make them pass through the holes in the side plate 200. This not only increases the complexity of assembly, but also reduces assembly efficiency. Second, since matching holes need to be provided on the side plate 200 to accommodate the fixing structures on the isolation plate, this destroys the continuous sealing of the side plate 200. This design easily allows moisture and conductive particles to intrude into the interior of the battery module 500, which may cause insulation failure or short circuit, posing a potential risk to the electrical safety of the battery module 500.

[0029] In order to solve the above problems, the utility model provides an isolation plate, including a plate body 100, and the first end face 102 of the plate body 100 along the thickness direction is configured to be bonded to two side plates 200 arranged parallel to the battery module 500; the plate body 100 is provided with a plurality of through holes 101 penetrating the plate body 100 along the thickness direction, and the through holes 101 are configured to cooperate with the installation tool to guide the plate body 100 to move toward the two side plates 200 along the thickness direction of the plate body 100.

[0030] It should be understood that a columnar rod is usually detachably mounted on the end plate 400 of the battery module 500 to serve as a load-bearing member for cooperating with the sling; in this embodiment, the columnar rod is directly used as the installation tool.

[0031] Specifically, if Figure 1 、 2 As shown, the plate body 100 is rectangular as a whole, and the first end face 102 of the plate body 100 along the thickness direction is provided with a first bonding area and a second bonding area. The first bonding area and the second bonding area are arranged at intervals along the width direction of the plate body 100, and are respectively bonded to the two side panels 200 arranged parallel to the battery module 500; the plate body 100 is provided with a plurality of through holes 101 that penetrate the plate body 100 along the thickness direction. The number and shape of the through holes 101 are not specifically limited and are determined according to actual needs, but their positions need to avoid the avoidance holes 104 and busbar mounting grooves 105 mentioned later. For example, they can be arranged near the edge of the plate body 100; the plurality of through holes 101 are configured to cooperate with a plurality of installation tools, and each through hole 101 can be used for the corresponding installation tool to pass through to guide the plate body 100 toward the two side panels 200 along the thickness direction of the plate body 100.

[0032] In this embodiment, the plate body 100 of the separator is connected to the side panels 200 of the battery module 500 by bonding, avoiding the use of traditional mechanical fixing structures (such as clips, latches, or screw sockets). Furthermore, the through-holes 101 in the plate body 100 are designed to cooperate with the installation tooling, allowing the separator to be quickly and accurately aligned and bonded to the side panels 200. This reduces the time consumed by manipulating the fixing structures one by one during assembly, simplifies the assembly process, and improves assembly efficiency. Furthermore, the bonding method maintains the continuity of the side panels 200, avoids compromising their sealing properties due to punching the mating holes, effectively prevents moisture and conductive particles from entering the module, reduces electrical safety risks caused by insulation failure or short circuits, and enhances the overall reliability and safety of the battery module 500.

[0033] Optionally, at least one through hole 101 is respectively defined at both ends of the plate body 100 in the longitudinal direction.

[0034] Specifically, the number and location of the through-holes 101 need to be determined based on the location and number of the mounting fixtures. Since the battery module 500 is provided with an end plate 400 at each end in the longitudinal direction, the plate body 100 is provided with at least one through-hole 101 at each end in the longitudinal direction, respectively, for mating with the mounting fixtures on the two end plates 400. For example, when two mounting fixtures are provided on each end plate 400, two through-holes 101 can be provided at each end in the longitudinal direction of the plate body 100; when one mounting fixture is provided on each end plate 400, one through-hole 101 can be provided at each end in the longitudinal direction of the plate body 100.

[0035] In this optional embodiment, by providing through holes 101 corresponding to the installation tooling on the end plate 400 at both ends of the plate body 100 in the longitudinal direction, the existing installation tooling can be directly used for quick insertion, eliminating the additional positioning step; at the same time, compared with only providing a through hole 101 at one end of the plate body 100 in the longitudinal direction, the plate body 100 is provided with through holes 101 at both ends in the longitudinal direction, which can significantly reduce the shaking and deflection of the plate body 100 during the assembly process, making the movement of the plate body 100 along the thickness direction more stable and smooth, effectively avoiding jamming, and further improving the installation accuracy and assembly efficiency.

[0036] Optionally, a through hole 101 is respectively provided at both ends of the plate body 100 in the length direction, and the two through holes 101 are arranged diagonally on the plate body 100 .

[0037] Specifically, if Figure 1 As shown, the plate body 100 is provided with two through holes 101, which are respectively located at the two ends of the plate body 100 in the length direction, and the two through holes 101 are arranged diagonally on the plate body 100, that is, the two through holes 101 are arranged at intervals in the width direction of the plate body 100.

[0038] In this optional embodiment, the two through holes 101 are set diagonally, which can form a rotational self-locking effect for the plate body 100 after it is inserted into the installation tool of the end plate 400: it can provide two-point guidance in the length direction to prevent the plate body 100 from shaking back and forth, and can also generate diagonal pulling force in the width direction to suppress lateral deviation; even if a slight angular error occurs during the assembly process, the oblique fit of the hole and the rod can automatically correct the deviation, so that the plate body 100 can be pushed into place steadily and smoothly, significantly reducing the risk of jamming and improving installation accuracy.

[0039] Optionally, the board body 100 is further provided with a plurality of avoidance holes 104 penetrating the board body 100 along the thickness direction. The plurality of avoidance holes 104 are arranged in two rows, and each row of avoidance holes 104 is arranged along the length direction of the board body 100; the avoidance holes 104 are configured for the battery cell tabs of the battery module 500 to pass through.

[0040] Specifically, the number of the avoidance holes 104 is selected according to the grouping of the battery cells, and the shape of the avoidance holes 104 can be square, circular or other shapes, such as Figure 1 As shown, the plate body 100 is further provided with a plurality of square avoidance holes 104, which penetrate the plate body 100 along the thickness direction of the plate body 100, wherein the plurality of avoidance holes 104 are arranged in two rows, and the avoidance holes 104 in each row are spaced apart along the length direction of the plate body 100; the avoidance holes 104 are used for the battery cell tabs of the battery module 500 to pass through, so as to facilitate the welding of the busbar 300.

[0041] In this optional embodiment, multiple avoidance holes 104 are arranged in double rows and continuously along the length direction, so that all battery cell tabs can pass through the board body 100 without bending or interference along the thickness direction of the board body 100, thereby shortening the length of the battery cell tabs, reducing the occupied space, and reducing the bending stress. At the same time, it ensures that the welding position of the battery cell tabs and the bus 300 is accurate and consistent, thereby improving assembly efficiency and electrical reliability.

[0042] Optionally, a plurality of bus bar mounting grooves 105 are provided on the second end face 103 along the thickness direction of the plate body 100. The plurality of bus bar mounting grooves 105 are arranged in two rows, and each row of bus bar mounting grooves 105 is arranged along the length direction of the plate body 100; at least one avoidance hole 104 is provided in each bus bar mounting groove 105.

[0043] Specifically, the number and shape of the busbar mounting slots 105 match the number and shape of the busbars 300; Figure 1 As shown, the second end face 103 of the plate body 100 along the thickness direction is provided with a plurality of bus mounting grooves 105, and the plurality of bus mounting grooves 105 are arranged in two rows, and the number of bus mounting grooves 105 in each row is equal, and are arranged at intervals along the length direction of the plate body 100, and at the same time, at least one avoidance hole 104 is provided in each bus mounting groove 105.

[0044] In this optional embodiment, the two rows of busbar mounting grooves 105 are precisely aligned with the double rows of avoidance holes 104 along the length direction, so that the busbar 300 is accurately positioned and the welding surface is flat, and the groove wall is used to limit the lateral displacement of the busbar 300, thereby improving welding consistency; at the same time, the groove depth can accommodate the thickness of the busbar 300, reducing the overall stacking height, saving module space, and improving assembly efficiency and structural compactness.

[0045] Optionally, an inner wall of the avoidance hole 104 extends toward the inside of the corresponding busbar mounting groove 105 to form a surrounding structure 1041 , and the surrounding structure 1041 is configured to be inserted into the through hole of the busbar 300 of the battery module 500 .

[0046] It should be understood that a plurality of through holes are provided on the busbar 300, which are arranged corresponding to the corresponding avoidance holes 104 along the thickness direction of the board body 100 to allow the battery cell tabs to pass through, thereby enabling the battery cell tabs to be bent at the end face of the busbar 300 away from the board body 100, thereby facilitating the welding of the battery cell tabs and the busbar 300.

[0047] Specifically, if Figure 3 As shown, the inner wall of the avoidance hole 104 extends toward the inside of the corresponding bus mounting groove 105 and forms an annular surrounding structure 1041. The surrounding structure 1041 can just be inserted into the through hole of the corresponding bus 300 to form a plug-in fit. Therefore, the bus 300 can be radially limited by the surrounding structure 1041 before being fixed to the plate body 100.

[0048] In other embodiments, the inner wall of the avoidance hole 104 does not extend toward the corresponding busbar installation slot 105 to form the surrounding structure 1041 , and the avoidance hole 104 and the corresponding through hole of the busbar 300 are aligned with each other.

[0049] Optionally, the first end face 102 is provided with a groove structure 107; the plate body 100 is provided with a plurality of fixing holes 106 along the thickness direction, the fixing holes 106 are arranged in a one-to-one correspondence with the groove structure 107 and are interconnected, and the fixing holes 106 are configured for the connection parts connecting the plate body 100 and the bus 300 of the battery module 500 to pass through.

[0050] Specifically, the connecting piece can be a snap buckle, and the fixing hole 106 on the board body 100 is used for the snap buckle to pass through and clamp, so as to fix the bus 300 and the board body 100 together; the first end face 102 of the board body 100 is provided with a groove structure 107, and the groove structure 107 is arranged one-to-one with the fixing hole 106 and is connected to each other.

[0051] In this optional embodiment, a groove structure 107 corresponding to and connected to the fixing hole 106 is provided on the first end face 102 of the plate body 100: the groove structure 107 can accommodate one end of the clip passing through the fixing hole 106, so that the end of the clip passing through the fixing hole 106 does not protrude from the first end face 102, thereby completing the reliable fixation of the bus 300 and the plate body 100 without increasing the overall stacking height, saving space and avoiding assembly interference.

[0052] Optionally, a wire harness securing structure 108 is provided between the two rows of busbar mounting slots 105. The wire harness securing structure 108 includes a cable tie 1081 and first and second cable tie holes 1082, 1083 extending through the panel body 100. The cable tie 1081 is configured to pass through the first and second cable tie holes 1082, 1083 to secure the wire harness. The wire harness typically extends between the two rows of busbar mounting slots 105 and is secured to the panel body 100 via the cable tie 1081.

[0053] The embodiment of the present invention provides a solid-state battery pack, such as Figure 5 As shown, it includes multiple battery modules 500, such as Figure 4 As shown, each battery module 500 includes a side plate 200 and the isolation plate as described above. One end of the side plate 200 close to the isolation plate is bent to form a flange, and the plate body 100 of the isolation plate is bonded to the flange.

[0054] In this embodiment, the number of battery modules 500 is not limited and depends on actual needs. In the structure of each battery module 500, the two side panels 200 are bent toward one end of the isolation plate to form flanges, and the first end surface 102 of the plate body 100 of the isolation plate is bonded to the two flanges of the two side panels 200 at both ends along the width direction.

[0055] In this embodiment, the flange provides a wide and flat bearing surface for bonding, increases the bonding area and shear strength, and avoids punching holes in the main body of the side panel 200, thereby keeping the side panel 200 intact and preventing the intrusion of moisture and metal chips.

[0056] The solid-state battery pack of this embodiment has the same beneficial effects as the above-mentioned isolation plate relative to the related art, so they will not be repeated here.

[0057] An embodiment of the present invention provides a vehicle comprising the solid-state battery pack described above.

[0058] The vehicle of this embodiment has the same beneficial effects as the above-mentioned isolation plate relative to the related art, so they will not be described in detail here.

[0059] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An isolation board, characterized in that: The invention comprises a plate body (100), wherein a first end surface (102) of the plate body (100) in the thickness direction is configured to be bonded to two side plates (200) arranged in parallel with the battery module (500); the plate body (100) is provided with a plurality of through holes (101) penetrating the plate body (100) in the thickness direction, and the through holes (101) are configured to cooperate with an installation tool to guide the plate body (100) to move toward the two side plates (200) in the thickness direction of the plate body (100).

2. The isolation plate according to claim 1, characterized in that The plate body (100) is provided with at least one through hole (101) at each of the two ends in the length direction.

3. The isolation plate according to claim 2, characterized in that The plate body (100) is provided with one through hole (101) at each end in the length direction, and the two through holes (101) are arranged diagonally on the plate body (100).

4. The isolation plate according to claim 1, wherein The plate body (100) is further provided with a plurality of avoidance holes (104) penetrating the plate body (100) along the thickness direction, wherein the plurality of avoidance holes (104) are arranged in two rows, and each row of the avoidance holes (104) is arranged along the length direction of the plate body (100); the avoidance holes (104) are configured to allow the cell tabs of the battery module (500) to pass through.

5. The isolation plate according to claim 4, characterized in that The plate body (100) is provided with a plurality of bus bar installation grooves (105) on the second end surface (103) in the thickness direction. The plurality of bus bar installation grooves (105) are arranged in two rows, and each row of bus bar installation grooves (105) is arranged along the length direction of the plate body (100); and each bus bar installation groove (105) is provided with at least one avoidance hole (104).

6. The isolation plate according to claim 5, characterized in that The inner wall of the avoidance hole (104) extends toward the interior of the corresponding busbar mounting groove (105) to form a surrounding structure (1041), and the surrounding structure (1041) is configured to be inserted into the through hole of the busbar (300) of the battery module (500).

7. The isolation plate according to claim 5, characterized in that A wire harness fixing structure (108) is provided between the two rows of busbar mounting grooves (105), the wire harness fixing structure (108) comprising a cable tie (1081) and a first cable tie hole (1082) and a second cable tie hole (1083) passing through the plate body (100), the cable tie (1081) being configured to pass through the first cable tie hole (1082) and the second cable tie hole (1083) to fix the wire harness.

8. The isolation plate according to claim 1, wherein The first end surface (102) is provided with a groove structure (107); the plate body (100) is provided with a plurality of fixing holes (106) along the thickness direction, the fixing holes (106) and the groove structures (107) are arranged in a one-to-one correspondence and are interconnected, and the fixing holes (106) are configured to allow a connector connecting the plate body (100) and the busbar (300) of the battery module (500) to pass through.

9. A solid-state battery pack, characterized in that: The invention comprises a plurality of battery modules (500), each of the battery modules (500) comprising a side plate (200) and an isolation plate according to any one of claims 1 to 8, wherein one end of the side plate (200) is bent close to the isolation plate to form a flange, and a plate body (100) of the isolation plate is bonded to the flange.

10. A vehicle, characterized in that: Comprising the solid-state battery pack as described in claim 9.

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