Assembling equipment, battery pack assembling method and battery pack assembling method

Abstract

The invention provides assembling equipment and an assembling method, the assembling equipment is used for assembling a battery pack, the battery pack comprises a battery cell and a heat management component, the assembling equipment comprises a frame, a bottom plate, a first side pressing plate, a second side pressing plate, a first sliding rail, a second sliding rail, a first top pressing plate and a turnover mechanism, and the frame is provided with a mounting hole; connecting rods are arranged at the two ends of the bottom plate and penetrate through the mounting holes; the first side pressing plate and the second side pressing plate are both arranged on the bottom plate, the first side pressing plate can slide on the bottom plate, and the locking assembly is connected with the first side pressing plate and the second side pressing plate; the first sliding rail and the second sliding rail are connected with the first side pressing plate and the second side pressing plate; the first jacking plate is connected with the first sliding rail and the second sliding rail; the turnover mechanism is connected with the connecting rod. Through the assembly equipment and the assembly method, the stacking precision of the battery cells can be improved.

Description

Technical Field

[0001] The present invention relates to the field of electrical equipment, and specifically provides a battery pack assembly device, a battery pack assembly method and a battery pack assembly method. Background Art

[0002] New energy vehicles have developed rapidly in recent years due to their environmental protection and low energy consumption. Many car companies have joined the research and development of new energy vehicles. As the most important component of new energy vehicles, the quality of battery packs seriously affects the development of new energy vehicles.

[0003] The existing battery pack manufacturing process is to first assemble the battery cells into modules, and then assemble the modules into a box to form a battery pack. This method has a complex production process and poor battery cell stacking accuracy. Summary of the invention

[0004] In order to solve the problems of complex production process and poor battery cell stacking accuracy in the prior art, the present invention provides an assembly device for assembling a battery pack, the battery pack comprising battery cells and a thermal management component, and is characterized in that the assembly device comprises a frame, a bottom plate, a first side pressure plate, a second side pressure plate, a first slide rail, a second slide rail, a first top pressure plate and a flipping mechanism, the frame is provided with a mounting hole; connecting rods are provided at both ends of the bottom plate, and the connecting rods pass through the mounting holes; the first side pressure plate and the second side pressure plate are both provided on the bottom plate, the first side pressure plate is slidable on the bottom plate, and a locking assembly connects the first side pressure plate and the second side pressure plate; the first slide rail and the second slide rail are both connected to the first side pressure plate and the second side pressure plate; the first top pressure plate is connected to the first slide rail and the second slide rail; and the flipping mechanism is connected to the connecting rod.

[0005] The bottom plate, the first side pressure plate, the second side pressure plate, the first slide rail, the second slide rail, the first top pressure plate and the locking assembly can realize the preliminary positioning of the battery cell and the thermal management component unit. By setting a flipping mechanism, the battery cell and the thermal management component unit can be flipped to facilitate gluing, and the battery cell and the thermal management component can be fixed as a whole by gluing.

[0006] In an optional technical solution of the present invention, a support is provided on the frame, and the mounting hole is provided on the support. Through the provision of the support and the mounting hole, the bottom plate, the first side pressure plate, the second side pressure plate, the first slide rail, the second slide rail, the first top pressure plate, and the battery cells and thermal management components located in the space enclosed by these components can be suspended and supported on the frame as a whole, so as to facilitate flipping.

[0007] In an optional technical solution of the present invention, at least one of the first side pressure plate and the second side pressure plate is provided with a through hole. Of course, a plurality of through holes can also be provided on both the first side pressure plate and the second side pressure plate to facilitate the bonding and fixing of the battery cell and the thermal management component by glue injection through the through holes.

[0008] In an optional technical solution of the present invention, the above-mentioned assembly equipment also includes an overpressure prevention mechanism. The first side pressure plate and the second side pressure plate are prevented from being over-pressed, causing damage to the first side pressure plate, the second side pressure plate or the battery cell and other components. The overpressure prevention mechanism includes a first fixing member arranged on the bottom plate and a second fixing member arranged on the first side pressure plate. When the first side pressure plate moves to a certain position, the first fixing member and the second fixing member are connected to prevent the first side pressure plate from moving again, thereby preventing excessive squeezing of the battery cell.

[0009] In an optional technical solution of the present invention, the first side pressing plate, the second side pressing plate and the top pressing plate are made of insulating materials to avoid abnormal electrical connection caused by contact with the battery core.

[0010] In an optional technical solution of the present invention, the tensile strength of the first side pressure plate, the second side pressure plate and the first top pressure plate is 30-60 MPa. That is, the first side pressure plate and the second side pressure plate can be compressed, which can avoid component damage and facilitate adjustment of the clamping force by adjusting the locking assembly.

[0011] In an optional technical solution of the present invention, the bottom plate is provided with a cell positioning groove and a thermal management component positioning piece, which can further finely position the cell and the thermal management component, and further ensure the stacking accuracy of the cell and thermal management component units.

[0012] The present invention also provides a battery pack assembly method, using the above-mentioned assembly equipment, comprising the steps of:

[0013] Mounting the battery cell and the thermal management component to the base plate;

[0014] Install the first side pressing plate, the second side pressing plate and the first top pressing plate;

[0015] Activating the flipping structure and flipping the bottom plate;

[0016] Glue is provided between the battery core and the thermal management component.

[0017] The battery pack obtained by the above assembly method has high stacking accuracy and simple process.

[0018] In an optional technical solution of the present invention, the first side pressure plate and the second side pressure plate may be installed first, or the first top pressure plate may be installed first.

[0019] The present invention also provides a battery pack assembly method, comprising the steps of:

[0020] Placing the battery pack prepared in step 8 onto the second top pressing plate;

[0021] Install the lower box outside the battery pack;

[0022] Install the first cover body to the lower box body;

[0023] Install a third top pressure plate to the first cover body;

[0024] Flip 180°;

[0025] Pull out the second top plate and the bottom plate and install the second cover body to the lower box body;

[0026] Pull out the third top pressing plate.

[0027] The method of first assembling a battery pack and then stacking the battery pack and the box components to finally form a battery pack allows the battery pack to be stacked with high accuracy and high space utilization.

[0028] In an optional technical solution of the present invention, between the step of "installing the lower box body to the outside of the above-mentioned battery pack" and the step of "installing the first cover body to the above-mentioned lower box body", the assembly method of the above-mentioned battery pack also includes the step of: installing a battery cell support to the above-mentioned battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional diagram of the assembly equipment;

[0030] Figure 2 yes Figure 1 Bottom view of the assembled equipment;

[0031] Figure 3 It is used Figure 2 Process step diagram of assembly equipment to prepare battery packs;

[0032] Figure 4 This is a diagram of the process steps for stacking battery groups into battery packs.

[0033] List of reference numerals:

[0034] Frame 1, mounting holes 1.1, support members 1.2;

[0035] Base plate 2, connecting rod 2.1;

[0036] A first side pressing plate 3;

[0037] The second side pressing plate 4;

[0038] First slide rail 5;

[0039] The second slide rail 6;

[0040] A first top pressing plate 7;

[0041] Flip structure 8;

[0042] Locking assembly 9;

[0043] Through hole 10;

[0044] Overpressure protection mechanism 11;

[0045] Battery cell positioning groove 12;

[0046] A second top pressing plate 13;

[0047] Lower box 14;

[0048] A first cover 15;

[0049] A third top pressing plate 16;

[0050] The second cover 17 . DETAILED DESCRIPTION

[0051] The following describes the optional embodiments of the present invention with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0052] In the description of the present invention, it is necessary to understand that the terms "distance", "width", "thickness", "up", "down", "left", "right", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0053] In the description of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In order to solve the problem of poor stacking accuracy of battery cells in the prior art, the present invention provides an assembly device for assembling a battery pack, the battery pack comprising battery cells and a thermal management component. Figure 1As shown, the assembly equipment includes a frame 1, a bottom plate 2, a first side pressure plate 3, a second side pressure plate 4, a first slide rail 5, a second slide rail 6, a first top pressure plate 7 and a flip mechanism 8. The frame 1 is provided with a mounting hole 1.1; connecting rods 2.1 are provided at both ends of the bottom plate 2, and the connecting rods 2.1 pass through the mounting hole 1.1; the first side pressure plate 3 and the second side pressure plate 4 are both provided on the bottom plate 2, and the first side pressure plate 3 can slide on the bottom plate 2, and the locking assembly 9 connects the first side pressure plate 3 and the second side pressure plate 4; the first slide rail 5 and the second slide rail 6 are both connected to the first side pressure plate 3 and the second side pressure plate 4; the first top pressure plate 7 is connected to the first slide rail 5 and the second slide rail 6; the flip mechanism 8 is connected to the connecting rod. Through the arrangement of the first side pressure plate, the second side pressure plate and the locking assembly, the first side pressure plate can move toward the second side pressure plate, thereby limiting the battery cell and the thermal management component from the side. By setting the bottom plate, the first slide rail, the second slide rail and the first top pressure plate, the battery cell and the thermal management component can be limited in the vertical direction. In addition, by setting a turning mechanism to connect the connecting rod of the bottom plate, the whole can be turned over to facilitate gluing and fixing the battery cell and the thermal management component.

[0056] like Figure 1 As shown, in an optional embodiment of the present invention, a support member 1.2 is provided on the frame 1, and a mounting hole 1.1 is provided on the support member 1.2. Through the provision of the support member 1.2 and the mounting hole 1.1 on the support member 1.2, the bottom plate 2, the first side pressure plate 3, the second side pressure plate 4, the first slide rail 5, the second slide rail 6, the first top pressure plate 7 and the battery cells and thermal management components located in the space enclosed by these components can be suspended and supported on the frame 1 as a whole, so as to facilitate flipping.

[0057] like Figure 1 As shown, in an optional embodiment of the present invention, at least one of the first side pressing plate 3 and the second side pressing plate 4 is provided with a through hole 10. Of course, a plurality of through holes 10 may also be provided on both the first side pressing plate 3 and the second side pressing plate 4, so as to facilitate the glue filling through the through holes 10 to bond and fix the battery cell and the thermal management component.

[0058] Specifically, the first side pressure plate 3 and the second side pressure plate 4 can be set as a hollow frame, which can not only limit the battery cell and the thermal management component, but also can be glued through the through hole 10 at the hollow part, and also reduce the weight of the device. The second side pressure plate 4 can be fixedly connected to the bottom plate 2, and only needs to move the first side pressure plate 3 and then lock it through the locking assembly. Of course, the second side pressure plate 4 can also be set on the bottom plate 2 to slide relative to the first side pressure plate 3.

[0059] like Figure 2As shown, in an optional embodiment of the present invention, the assembly equipment further includes an overpressure prevention mechanism 11. The first side pressure plate 3 and the second side pressure plate 4 are over-pressed, causing damage to the first side pressure plate 3, the second side pressure plate 4 or components such as the battery cell. The overpressure prevention mechanism 11 includes a first fixing member arranged on the bottom plate and a second fixing member arranged on the first side pressure plate. When the first side pressure plate 3 moves to a certain position, the first fixing member and the second fixing member are connected to prevent the first side pressure plate 3 from moving again, thereby preventing excessive squeezing of the battery cell.

[0060] In an optional embodiment of the present invention, the materials of the first side pressure plate 3, the second side pressure plate 4 and the first top pressure plate 7 are insulating materials. This prevents the electrodes of the battery cell from being electrically connected through these three components. Specifically, the materials of the first side pressure plate 3, the second side pressure plate 4 and the first top pressure plate 7 can be polyurethane.

[0061] In an optional embodiment of the present invention, the first side pressure plate 3, the second side pressure plate 4 and the first top pressure plate 7 can be polyurethane PU elastomer, and its tensile strength is 30-60MPa. That is, the first side pressure plate 3 and the second side pressure plate 4 can be compressed, which can avoid component damage and facilitate the adjustment of the clamping force through the adjustment of the locking assembly 9.

[0062] In an optional embodiment of the present invention, a cell positioning groove 12 and a thermal management component positioning member are provided on the bottom plate 2. The cell and the thermal management component can be further positioned in a refined manner, further ensuring the stacking accuracy of the cell and thermal management component units.

[0063] like Figure 3 As shown, the present invention also provides a battery pack assembly method using the above-mentioned assembly equipment. When assembling the battery pack, first install the first row of battery cells on the bottom plate 2 (step a), install and fix the thermal management component (step b), and install the second row of battery cells (step c). The first top pressing plate 7 is connected to the first slide rail 5 and the second slide rail 6 and presses the battery cells, moves the first side pressing plate 3 until the first fixing member and the second fixing member are connected, and locks the first side pressing plate 3 and the second side pressing plate 4 (step d). Start the flip structure 8 and flip the bottom plate 90° to drip glue on the first row of battery cells (step e). After 30 minutes, rotate 180° and drip glue on the other row of battery cells (step f). After the glue is cured, open the first side pressing plate 3 and the first top pressing plate 7 (step g), so that the stacking of the small unit battery pack is completed (step h). The battery pack stacking obtained by this assembly method has high stacking accuracy and simple process.

[0064] like Figure 4As shown, the present invention also provides a battery pack assembly method, placing the prepared battery pack (and small unit stack) on the second top pressure plate 13 (step i), installing the lower box 14 to the outside of the battery pack, installing the battery cell support to the bottom of the battery cell, installing the first cover 15 to the lower box 14 and closing the opening at one end of the lower box 14 (step j), installing the third top pressure plate 16 to the first cover 15 (step k), flipping the whole 180° (step l), pulling out the second top pressure plate 13 and the bottom plate 2 and installing the second cover 17 to the lower box 14 and closing the opening at the other end of the lower box 14; pulling out the third top pressure plate 16 (step m).

[0065] The battery packs made by the battery pack assembly method can be used for, but not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0066] So far, the technical solutions of the present invention have been described in conjunction with the optional implementation modes shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific implementation modes. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An assembly device for assembling a battery pack, the battery pack comprising a battery cell and a thermal management component, the assembly device comprising: A frame provided with mounting holes; A bottom plate, with connecting rods disposed at both ends of the bottom plate, and the connecting rods pass through the mounting holes; The first side pressing plate and the second side pressing plate are both arranged on the bottom plate, and the first side pressing plate is slidable on the bottom plate; a locking assembly connects the first side pressing plate and the second side pressing plate; The first slide rail and the second slide rail are both connected to the first side pressure plate and the second side pressure plate; A first pressing plate is connected to the first slide rail and the second slide rail; The flip mechanism is connected to the connecting rod.

2. The assembly equipment according to claim 1, characterized in that A support member is arranged on the frame, and the mounting hole is arranged on the support member.

3. The assembly equipment according to claim 1, characterized in that At least one of the first side pressing plate and the second side pressing plate is provided with a through hole.

4. The assembly equipment according to claim 1, characterized in that The assembly equipment also includes an overpressure prevention mechanism.

5. The assembly equipment according to claim 1, characterized in that The first side pressing plate, the second side pressing plate and the first top pressing plate are made of insulating material.

6. The assembly equipment according to claim 1, characterized in that The tensile strength of the first side pressure plate, the second side pressure plate and the top pressure plate is 30MPa-60MPa.

7. The assembly equipment according to claim 1, characterized in that The bottom plate is provided with a battery core positioning groove and a thermal management component positioning piece.

8. A battery pack assembly method, using the assembly device as claimed in claim 1, comprising the steps of: mounting the battery cell and the thermal management component to the base plate; Locking the first side pressure plate and the second side pressure plate and installing the first top pressure plate to the first slide rail and the second slide rail; Activating the flipping structure and flipping the bottom plate; Glue is provided between the battery cell and the thermal management component.

9. A battery pack assembly method, characterized in that: Includes steps: Placing the battery pack prepared in step 8 onto a second top pressing plate; Install the lower box outside the battery pack; Installing a first cover body to the lower box body; Install a third top pressing plate to the first cover body; Flipping the assembly of the second top pressing plate, the battery pack, the box, the first cover and the third top pressing plate 180 degrees; Pull out the second top plate and the bottom plate and install the second cover body to the lower box body; Pull out the third top pressing plate.

10. The method for assembling a battery pack according to claim 9, characterized in that: Between the step of "installing the lower box body to the outside of the battery pack" and the step of "installing the first cover body to the lower box body", the battery pack assembly method further includes the step of: installing a cell support member to the cell.

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