Battery pack

Abstract

The utility model provides a battery pack, which belongs to the technical field of battery packs, the battery pack comprises a box body and battery cells, the box body is provided with a mounting plate, and the mounting plate is provided with a mounting groove extending along a first direction; the battery cell is arranged in the box body, the battery cell is provided with a to-be-installed surface, an installation block is arranged on the to-be-installed surface, the installation block is installed in the installation groove in a sliding mode in the first direction, and when the battery cell is located at a designated position, the battery cell and the box body are relatively fixed. Through the sliding fit of the mounting blocks on the battery cell and the mounting grooves in the box body, the assembly mode is simple and quick, no additional adhesive is needed for fixation, and the battery has good detachability and maintainability.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack. Background Art

[0002] At present, the battery pack solutions for new energy vehicles mostly adopt the CTP (cell to pack) solution. The CTP solution integrates the battery cells directly into the battery pack, eliminating the intermediate module link, improving space utilization and reducing battery pack costs.

[0003] The current CTP solution is to use adhesives such as structural adhesives and thermally conductive structural adhesives to bond and fix the battery cells to the battery pack, achieving a high level of energy density, but it is not conducive to the maintenance of the battery pack and the cascade utilization of the battery. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the battery cell is bonded to the battery pack by an adhesive, which is not conducive to the maintenance of the battery pack and the cascade utilization of the battery, thereby providing a battery pack.

[0005] In order to solve the above technical problems, the utility model provides a battery pack, comprising:

[0006] The box body has a mounting plate, wherein the mounting plate has a mounting groove extending along a first direction;

[0007] The battery cell is arranged inside the box body, and the battery cell has a surface to be installed. A mounting block is arranged on the surface to be installed. The mounting block is slidably installed in the mounting groove along a first direction, and when the battery cell is in a specified position, the battery cell and the box body are relatively fixed.

[0008] Optionally, the mounting block and the battery core are an integrated structure or a split structure.

[0009] Optionally, in a direction toward the battery core, the opening of the mounting groove gradually decreases, and at least one end of the mounting groove is an open end.

[0010] Optionally, the mounting groove is a trapezoidal groove structure, and the mounting block is a trapezoidal block structure adapted to the mounting groove.

[0011] Optionally, the box body further includes a side frame body, and the side frame body and the mounting plate are detachably connected to form a receiving cavity for placing the battery cell.

[0012] Optionally, a partition frame is further included, and the partition frame is arranged in the accommodating cavity.

[0013] Optionally, a limiting member is provided at the open end of the mounting slot; the structure of the limiting member is adapted to the structure of the mounting slot, and the limiting member is clamped in the open end of the mounting slot.

[0014] Optionally, a baffle is further included, which is connected to the limiting member; and one end of the baffle is detachably connected to the side frame body, and the other end abuts against the mounting groove to limit the movement of the limiting member.

[0015] Optionally, the side frame body and the upper surface of the mounting plate are detachably connected; the inner side wall portion of the baffle abuts against the mounting groove, and the other portion of the inner side wall abuts against and is detachably connected to the outer side wall of the side frame body;

[0016] or;

[0017] The inner side wall of the baffle plate abuts against the mounting groove, and the outer side wall of the baffle plate abuts against and is detachably connected to the inner side wall of the side frame body.

[0018] Optionally, a sealing member is further included, wherein the sealing member is sleeved on the limiting member, and when the limiting member is clamped in the mounting groove, the sealing member is located between the opening end of the mounting groove and the baffle to seal the mounting groove.

[0019] The technical solution of this utility model has the following advantages:

[0020] The utility model provides a battery pack, comprising a box body and a battery cell, wherein the box body has a mounting plate, the mounting plate has a mounting groove extending along a first direction, the battery cell has a surface to be mounted, a mounting block is arranged on the surface to be mounted, the mounting block is slidably mounted in the mounting groove along the first direction, and when the battery cell is in a specified position, the battery cell and the box body are relatively fixed.

[0021] Through the sliding fit between the mounting block on the battery cell and the mounting groove on the box body, the assembly method is simple and quick, no additional adhesive is required for fixing, and it has good disassembly and maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of an exploded structure of a battery pack provided in an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the mounting plate in FIG.

[0025] Figure 3 for Figure 1 A partial enlarged schematic diagram of the coordination between the mounting plate and the battery cell;

[0026] Figure 4 for Figure 1 A partial enlarged schematic diagram of the limiter and baffle.

[0027] Description of reference numerals:

[0028] 1. Box body; 2. Mounting plate; 3. Mounting slot; 4. Battery cell; 5. Surface to be mounted; 6. Mounting block; 7. Side frame body; 8. Partition frame; 9. Baffle; 10. Limiting piece; 11. Sealing piece; 12. Cover plate. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] The battery pack provided in this embodiment adopts the CTP solution while taking into account the detachability and maintainability of the battery cell.

[0034] like Figures 1 to 4 As shown, a specific implementation of the battery pack provided in this embodiment includes a box body 1 and a battery cell 4. The box body 1 has a mounting plate 2, and the mounting plate 2 has a mounting groove 3 extending along a first direction; the battery cell 4 is arranged inside the box body 1, and the battery cell 4 has a mounting surface 5, and a mounting block 6 is arranged on the mounting surface 5. The mounting block 6 is slidably installed in the mounting groove 3 along the first direction, and when the battery cell 4 is in a specified position, the battery cell 4 and the box body 1 are relatively fixed. It should be noted that the first direction is Figure 2 The width direction of the mounting plate in the figure is the direction indicated by the arrow.

[0035] Through the sliding fit between the mounting block 6 on the battery cell 4 and the mounting groove 3 on the box body 1, the assembly method is simple and quick, no additional adhesive is required for fixing, and the assembly has good disassembly and maintainability.

[0036] In a specific implementation of the box body 1, a plurality of battery packs are arranged inside the box body 1, and the battery packs are composed of a plurality of battery cells 4 arranged in an arranged manner.

[0037] Specifically, the mounting plate 2 can be the bottom plate of the box body 1, or it can be a plate body separately arranged on the upper surface of the bottom plate; a plurality of mounting blocks 6 can be installed in the mounting groove 3 at the same time, that is, a plurality of battery cells 4 can be fixed at the same time, and the length of the mounting block 6 can be consistent with the length of the battery cell 4, or it can be inconsistent.

[0038] In the battery pack provided in this embodiment, the mounting block 6 and the battery cell 4 are an integrated structure.

[0039] In other embodiments, the mounting block 6 is a split structure, and can be connected to the battery core 4 by welding, bonding, or the like.

[0040] like Figure 3 As shown, in the battery pack provided in this embodiment, the opening of the mounting groove 3 gradually decreases in the direction toward the battery cell 4, and both ends of the mounting groove 3 are open ends, and the opening gradually decreases, thereby limiting the movement of the battery cell 4 in the height direction. Since the opening gradually decreases, the setting of the open end facilitates the installation of the mounting block 6.

[0041] In other embodiments, one end of the installation groove 3 is an open end, and the other end is a closed end, and the installation block 6 is slidably installed from the open end of the one side.

[0042] like Figure 3As shown, in the battery pack provided in this embodiment, the mounting groove 3 is a trapezoidal groove structure, and the mounting block 6 is a trapezoidal block structure adapted to the mounting groove. The trapezoidal groove structure is simple and easy to process.

[0043] In addition, as an alternative implementation, the mounting groove 3 may also be a structure of other forms, as long as its opening gradually decreases in the upward direction.

[0044] In other embodiments, the opening size of the mounting groove 3 in the direction toward the battery cell 4 remains unchanged, that is, the battery cell 4 is not limited in the height direction by the mounting groove 3 itself, and the battery cell 4 can be pressed by the cover plate 12 above the box body 1.

[0045] In another embodiment, the mounting block 6 and the mounting groove 3 are connected by damping sliding, and are driven to slide by external force. After reaching the specified position, the external force is removed, and the battery cell 4 is fixed inside the box 1 under the action of damping.

[0046] like Figure 1 As shown, in the battery pack provided in this embodiment, the box body 1 also includes a side frame body 7, and the side frame body 7 and the mounting plate 2 are detachably connected to form a receiving cavity for placing the battery cell 4.

[0047] When the battery cell 4 needs to be disassembled, since the battery cell 4 needs to slide out from the open end of the mounting groove 3, the setting of the side frame body 7 affects the removal of the battery cell 4. Therefore, the side frame body 7 is detachably connected to the mounting plate 2. The side frame body 7 is first disassembled to leave space for the battery cell 4 to slide, and then the battery cell 4 is disassembled.

[0048] Specifically, the side frame body 7 is arranged on the upper surface of the mounting plate 2, and the opening end of the mounting groove 3 faces outward and is blocked by the baffle 9 mentioned later.

[0049] Specifically, the side frame body 7 and the mounting plate 2 may be fixedly connected by bolts.

[0050] In addition, as an alternative embodiment, the side frame body 7 can enclose the mounting plate 2 inside thereof. In this case, the open end of the mounting groove 3 is blocked by the side frame body 7, that is, there is no need to set the baffle 9 mentioned later.

[0051] like Figure 1 As shown, the battery pack provided in this embodiment further includes a partition frame 8, and the partition frame 8 is arranged in the accommodating cavity.

[0052] Specifically, the partition frame 8 includes cross-arranged transverse plates and longitudinal plates, the longitudinal plates are plates arranged along a first direction, and the transverse plates are plates perpendicular to the longitudinal plates. A plurality of cavities are formed between the transverse plates and the longitudinal plates, and battery packs are placed therein respectively.

[0053] Specifically, when the mounting groove 3 is a structure with openings at both ends, and the partition 8 in the battery pack is a horizontal plate, at least two battery cells 4 are arranged in the battery pack, and the horizontal plate separates adjacent battery cells 4. The horizontal plate contacts the side walls of the battery cells 4 to limit the movement of the battery cells 4 in the first direction, i.e., to prevent the battery cells 4 from moving inside the box body 1.

[0054] like Figure 1 and Figure 4 As shown, in the battery pack provided by the present embodiment, a limit member 10 is provided at the open end of the mounting groove 3, and the structure of the limit member 10 is adapted to the structure of the mounting groove 3, and is clamped in the open end of the mounting groove 3. Usually, due to the manufacturing tolerance of the battery cell 4 and the case 1, and the assembly tolerance of the battery cell 4 and the case 1, after the battery cell 4 and the case 1 are assembled, there is a certain distance between the battery cell 4 closest to the open end of the mounting groove 3 and the open end of the mounting groove 3. Therefore, in order to avoid the shaking of the battery cell 4 caused by the distance, after the battery cell 4 is slidably installed in the mounting groove 3, a limit member 10 is clamped in the open end of the mounting groove 3. For the mounting groove 3 with both ends open, the open ends of both ends are provided with a limit member 10.

[0055] It is understandable that the size of the limiting member 10 can be adjusted according to actual assembly.

[0056] like Figure 1 and Figure 4 As shown, the battery pack provided in this embodiment also includes a baffle 9, and the baffle 9 and the limit member 10 can be an integrated structure or a split structure; and one end of the baffle 9 is detachably connected to the side frame body 7, and the other end abuts against the mounting groove 3 to limit the movement of the limit member 10.

[0057] The setting of the baffle 9 prevents the movement of the limiting member 10, thereby ensuring the positioning effect of the battery cell 4. Specifically, the baffle 9 and the limiting member 10 can be an integrated structure or a split structure; the baffle 9 can abut against the open ends of multiple installation grooves 3 at the same time, one end of the limiting member 10 abuts against the battery cell 4, and the other end abuts against the baffle 9.

[0058] In one embodiment, the side frame body 7 and the upper surface of the mounting plate 2 (the upper surface of the mounting plate 2 is the surface of the mounting plate 2 facing the battery cell 4) are detachably connected. At this time, the inner wall of the baffle 9 partially abuts on the mounting groove 3, and the other part of the inner wall abuts and is detachably connected to the outer wall of the side frame body 7, wherein the inner wall of the baffle 9 is the wall surface of the baffle 9 facing the battery cell 4. This method is that the baffle 9 is arranged on the outer side of the side frame body 7.

[0059] In another embodiment, the inner side wall of the baffle plate 9 abuts against the mounting groove 3, and the outer side wall of the baffle plate 9 abuts against and is detachably connected to the inner side wall of the side frame body 7, wherein the outer side wall of the baffle plate 9 is a wall surface of the baffle plate 9 facing away from the battery cell 4, and the inner side wall of the side frame body 7 is a wall surface of the side frame body 7 facing the battery cell 4. In this manner, the baffle plate 9 is arranged on the inner side of the side frame body 7.

[0060] In the battery pack provided in this embodiment, the baffle plate 9 is detachably connected to the side frame body 7. Specifically, the side frame body 7 and the baffle plate 9 are fixed by bolts, and the connection is firm and convenient for disassembly.

[0061] like Figure 4 As shown, the battery pack provided in this embodiment further includes a seal 11, and the seal 11 is used to seal the mounting groove 3. The seal 11 is provided to prevent external liquid, impurities, etc. from entering the interior of the box body 1 from between the stopper 10 and the mounting groove 3.

[0062] Specifically, the sealing member 11 may be a sealing ring, which is sleeved on the limiting member 10 , and when the limiting member 10 is clamped in the mounting groove 3 , the sealing ring is located between the opening end of the mounting groove 3 and the baffle 9 .

[0063] In addition, as an alternative embodiment, the sealing member 11 may also be a sealing gasket, which may be disposed between the baffle 9 and the side frame body 7 .

[0064] The assembly steps of the battery pack provided in this embodiment are as follows:

[0065] Step 1: Starting from the open end of the mounting groove 3 of the mounting plate 2, slide the battery cell 4 onto the mounting plate 2;

[0066] Step 2: Install the side frame body 7 on the upper surface of the mounting plate 2. After the side frame body 7 is installed, the position of the battery cell 4 in the box can be adjusted appropriately according to actual needs;

[0067] Step 3: The baffle plate 9 connected to the limiting member 10 is clamped in the open end of the mounting groove 3 through the limiting member 10, so that part of the inner wall of the baffle plate 9 abuts against the mounting groove 3, and the other part of the inner wall of the baffle plate 9 abuts against the outer wall of the side frame body 7, and then the baffle plate 9 and the side frame body 7 are detachably connected.

[0068] For the assembly method in which the baffle plate 9 is arranged on the inner side of the side frame body 7:

[0069] Step 1: Starting from the open end of the mounting groove 3 of the mounting plate 2, slide the battery cell 4 onto the mounting plate 2;

[0070] Step 2: The baffle plate 9 connected to the limiting member 10 is clamped in the open end of the installation groove 3 through the limiting member 10, so that the inner side wall of the baffle plate 9 is abutted against the installation groove 3.

[0071] Step 3: detachably connect the side frame body 7 and the mounting plate 2, and then detachably connect the side frame body 7 and the baffle 9.

[0072] The steps for disassembling the battery pack provided in this embodiment are as follows:

[0073] If the baffle plate 9 is outside the side frame body 7: first remove the bolts connecting the baffle plate 9 and the side frame body 7, and remove the baffle plate 9;

[0074] Remove the connection between the side frame body 7 and the mounting plate 2, and then take the side frame body 7 out from bottom to top to expose the battery core 4 inside the box body 1;

[0075] The limiting member 10 at the open end of the installation groove 3 is removed, and then the battery cell 4 is slid along the direction of the installation groove 3 to be removed, thereby completing the disassembly process of the battery cell 4 .

[0076] For the baffle 9 on the inner side of the side frame body 7: first remove the bolts connecting the baffle 9 and the side frame body 7, and then remove the connection between the side frame body 7 and the mounting plate 2, so as to remove the baffle 9 and the side frame body 7 to expose the battery cell 4 inside the box body 1;

[0077] The limiting member 10 at the open end of the installation groove 3 is removed, and then the battery cell 4 is slid along the direction of the installation groove 3 to be removed, thereby completing the disassembly process of the battery cell 4 .

[0078] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A battery pack, characterized in that: include: A box body (1) has a mounting plate (2), wherein the mounting plate (2) has a mounting groove (3) extending along a first direction; A battery cell (4) is arranged inside the box (1), the battery cell (4) having a surface to be installed (5), a mounting block (6) being arranged on the surface to be installed (5), the mounting block (6) being slidably installed in the mounting groove (3) along a first direction, and when the battery cell (4) is in a specified position, the battery cell (4) and the box (1) are relatively fixed.

2. The battery pack according to claim 1, characterized in that: The mounting block (6) and the battery core (4) are of an integrated structure or a split structure.

3. The battery pack according to claim 1, characterized in that: In the direction toward the battery core (4), the opening of the mounting groove (3) gradually decreases, and at least one end of the mounting groove (3) is an open end.

4. The battery pack according to claim 3, characterized in that: The mounting groove (3) is a trapezoidal groove structure, and the mounting block (6) is a trapezoidal block structure adapted to the mounting groove.

5. The battery pack according to claim 3, characterized in that: The box body (1) further comprises a side frame body (7), and the side frame body (7) and the mounting plate (2) are detachably connected to form a receiving cavity for accommodating the battery cell (4).

6. The battery pack according to claim 5, characterized in that: It also comprises a partition frame (8), wherein the partition frame (8) is arranged in the accommodating cavity.

7. The battery pack according to claim 5, characterized in that: A limiting member (10) is provided at the open end of the installation slot (3); the structure of the limiting member (10) is adapted to the structure of the installation slot (3), and the limiting member (10) is clamped in the open end of the installation slot (3).

8. The battery pack according to claim 7, characterized in that: It also includes a baffle (9), which is connected to the limiting member (10); one end of the baffle (9) is detachably connected to the side frame body (7), and the other end abuts against the mounting groove (3) to limit the movement of the limiting member (10).

9. The battery pack according to claim 8, characterized in that: The side frame body (7) and the upper surface of the mounting plate (2) are detachably connected; the inner wall portion of the baffle plate (9) abuts against the mounting groove (3), and the other portion of the inner wall abuts against and is detachably connected to the outer wall of the side frame body (7); or; The inner side wall of the baffle plate (9) abuts against the mounting groove (3), and the outer side wall of the baffle plate (9) abuts against and is detachably connected to the inner side wall of the side frame body (7).

10. The battery pack according to claim 8, characterized in that: It also comprises a sealing member (11), wherein the sealing member (11) is sleeved on the limiting member (10), and when the limiting member (10) is clamped in the mounting groove (3), the sealing member (11) is located between the opening end of the mounting groove (3) and the baffle (9) to seal the mounting groove (3).

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