Stacking apparatus, assembly line and assembly method for battery pack, and battery pack

Abstract

The application relates to the technical field of batteries, and discloses a stacking device, an assembly production line and an assembly method of a battery pack, and the battery pack. The stacking device is used for stacking a plurality of batteries to form a battery pack, and comprises a base used for placing the batteries, a positioning mechanism comprising a positioning surface used for abutting a stacking surface of the batteries, and an alignment mechanism arranged on the base and used for abutting side surfaces of the batteries to align the batteries. The positioning mechanism is used for clamping the aligned batteries. The plurality of batteries are stacked on the base, the alignment mechanism is used for aligning the batteries, and the positioning mechanism is used for clamping the aligned batteries, so that the stacking of the battery pack is realized.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a stacking device, a battery pack assembly line and assembly method, and a battery pack. Background Technology

[0002] In related technologies, battery packs are composed of multiple stacked batteries. However, existing technologies lack well-established stacking auxiliary equipment to improve battery stacking efficiency during battery stacking. Summary of the Invention

[0003] This invention provides a stacking device, a battery pack assembly line and assembly method, and a battery pack to assist in the stacking of battery packs.

[0004] According to a first aspect of the present invention, a stacking apparatus is provided for stacking multiple batteries to form a battery pack, the stacking apparatus comprising:

[0005] The base is used to hold the battery;

[0006] The positioning mechanism includes a positioning surface for engaging with the stacking surface of the batteries;

[0007] Alignment mechanism, located on the base, is used to fit against the sides of each battery to align them.

[0008] The positioning mechanism is used to clamp and align the batteries.

[0009] The stacking device of this invention includes a base, a positioning mechanism, and an alignment mechanism. Multiple batteries are stacked on the base, and the alignment mechanism aligns each battery. Subsequently, the positioning mechanism clamps the aligned batteries together, thereby achieving the stacking of the battery pack.

[0010] According to a second aspect of the present invention, a battery pack assembly line is provided, including the stacking equipment described above.

[0011] The battery pack assembly line of this invention includes a stacking device. The stacking device includes a base, a positioning mechanism, and an alignment mechanism. Multiple batteries are stacked on the base, and the alignment mechanism aligns each battery. Subsequently, the positioning mechanism clamps the aligned batteries, thereby achieving the stacking of the battery pack.

[0012] According to a third aspect of the present invention, a method for assembling a battery pack is provided, comprising:

[0013] Provide batteries with busbars;

[0014] Multiple batteries are stacked such that the first busbar of one adjacent battery and the second busbar of another adjacent battery are fitted together.

[0015] Align the batteries;

[0016] Clamp the aligned batteries together.

[0017] The battery pack assembly method of this invention stacks individual batteries with busbars, and makes the first busbar and second busbar of two adjacent batteries fit together. Subsequently, multiple batteries are aligned and clamped together to achieve the stacking of individual batteries.

[0018] According to a fourth aspect of the present invention, a battery pack is provided, comprising a battery pack assembled by the battery pack assembly method described above.

[0019] The battery pack of this invention is assembled using the battery pack assembly method described above, and the battery pack assembly production line includes a stacking device. The battery pack assembly method involves stacking individual batteries with busbars, such that the first and second busbars of two adjacent batteries are correspondingly arranged, and then aligning and clamping the multiple batteries to achieve the stacking of individual batteries. Attached Figure Description

[0020] To better understand this disclosure, reference may be made to the embodiments shown in the following figures. Components in the figures are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this disclosure. Additionally, related elements or components may have different arrangements as known in the art. Furthermore, in the figures, the same reference numerals denote the same or similar components in various figures. Wherein:

[0021] Figure 1 This is an application structure diagram illustrating the first state of a stacking device according to an exemplary embodiment;

[0022] Figure 2 This is an application structure diagram of a second state of a stacking device according to an exemplary embodiment;

[0023] Figure 3 This is a schematic diagram illustrating the engagement structure of a positioning slider and a battery in a stacking device according to an exemplary embodiment.

[0024] Figure 4 This is a schematic diagram illustrating the alignment mechanism and battery cooperation structure of a stacking device according to an exemplary embodiment;

[0025] Figure 5This is a schematic diagram of a partial engagement structure between an alignment mechanism and a battery in a stacking device, according to an exemplary embodiment.

[0026] Figure 6 This is a schematic diagram of the alignment mechanism of a stacking device according to an exemplary embodiment;

[0027] Figure 7 This is a schematic diagram of a partial application mechanism of an alignment mechanism for a stacking device according to an exemplary embodiment;

[0028] Figure 8 This is a partial application structure diagram of a stacking device in a first state according to an exemplary embodiment;

[0029] Figure 9 This is a partial application structure diagram of a stacked device in a first state according to an exemplary embodiment;

[0030] Figure 10 This is a partial application structure diagram of a second state of a stacked device according to an exemplary embodiment;

[0031] Figure 11 This is a partial application structure diagram of a second state of a stacking device according to an exemplary embodiment;

[0032] Figure 12 This is a schematic diagram of a third application structure of a stacking device according to an exemplary embodiment;

[0033] Figure 13 This is a schematic diagram of a fourth application structure of a stacking device according to an exemplary embodiment;

[0034] Figure 14 This is a schematic diagram of the structure of a limiting member of a stacking device according to an exemplary embodiment;

[0035] Figure 15 This is a schematic flowchart illustrating a battery pack assembly method according to an exemplary embodiment.

[0036] The annotations in the attached figures are explained as follows:

[0037] 1. Battery; 2. First busbar; 3. Second busbar; 4. Circuit board; 5. Signal acquisition terminal; 6. Housing; 7. Connector; 8. Cable tie; 9. Flange edge;

[0038] 100. Base; 101. Positioning slider; 102. Base plate; 103. Base plate; 104. First guide rail; 105. Connecting block; 106. Second guide rail; 107. Gripping part; 108. Positioning clamp;

[0039] 110. First positioning mechanism; 111. First positioning surface; 120. Second positioning mechanism; 121. Second positioning surface; 122. Drive mechanism;

[0040] 130. Alignment mechanism; 131. Drive plate; 1311. Reference plane; 132. Protrusion;

[0041] 140. First welding clamping mechanism; 141. First connecting piece; 1411. First connecting part; 1412. Second connecting part; 142. First pressure block; 1421. First clearance space; 1422. First clamping part; 143. First fastener; 144. First elastic element;

[0042] 150. Second welding clamping mechanism; 151. Second connecting piece; 1511. Third connecting part; 1512. Fourth connecting part; 152. Second clamping block; 1521. First connecting body; 1522. Second clamping part; 1523. Third clamping part; 153. Third clamping block; 1531. Second connecting body; 1532. Fourth clamping part; 1533. Fifth clamping part; 154. Second fastener; 155. Second elastic element; 156. Notch; 157. Second clearance space;

[0043] 160. Limiting component; 161. Adaptor part; 1611. First shaft section; 1612. Second shaft section; 162. Waist-shaped hole; 163. Circular hole; 164. Handle. Detailed Implementation

[0044] The technical solutions in the exemplary embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this disclosure.

[0045] In the description of this disclosure, unless otherwise expressly specified and limited, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term “multiple” refers to two or more; and the term “and / or” includes any and all combinations of one or more associated listed items. In particular, references to “the / described” object or “a” object are also intended to indicate one of a possible plurality of such objects.

[0046] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0047] Furthermore, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this disclosure are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this disclosure. It should also be understood that, in the context of a reference to an element or feature being connected to another element(s) "upper," "lower," "inner," or "outer," it can be directly connected to the other element(s) "upper," "lower," "inner," or "outer," or indirectly connected to the other element(s) "upper," "lower," "inner," or "outer" through an intermediate element.

[0048] One embodiment of the present invention provides a stacking device, please refer to Figures 1 to 14 The stacking device is used to stack multiple batteries 1 to form a battery pack. The stacking device includes: a base 100 for placing the batteries 1; a positioning mechanism including a positioning surface for abutting the stacking surface of the batteries 1; and an alignment mechanism 130 disposed on the base 100 for abutting the sides of each battery 1 to align the batteries 1. The positioning mechanism is used to clamp the aligned batteries 1.

[0049] A stacking device according to one embodiment of the present invention includes a base 100, a positioning mechanism and an alignment mechanism 130. Multiple batteries 1 are stacked on the base 100 and aligned by the alignment mechanism 130. Subsequently, the positioning mechanism is used to clamp the aligned batteries 1, thereby realizing the stacking of the battery pack.

[0050] It should be noted that multiple batteries 1 are stacked on the base 100. During the stacking process, a robotic arm can be used to grasp the batteries 1, allowing them to be stacked sequentially on the base 100. The stacking of the batteries 1 on the base 100 can be horizontal or vertical. Horizontal stacking means that the stacking direction of the battery pack is parallel to the base 100. In this case, the base 100 can be parallel to a horizontal reference plane, or it can be tilted to the horizontal reference plane. Vertical stacking means that the stacking direction of the battery pack is perpendicular to the base 100.

[0051] In one embodiment, when the batteries 1 are stacked vertically on the base 100, the positioning mechanism may include only a first positioning mechanism. After the batteries 1 are stacked vertically on the base 100, and the alignment mechanism 130 aligns the batteries 1, the first positioning mechanism can be used to press the batteries 1 together. In another embodiment, the positioning mechanism may include a first positioning mechanism and a second positioning mechanism. The second positioning mechanism may be disposed on the base 100. After the batteries 1 are stacked vertically on the second positioning mechanism, and the alignment mechanism 130 aligns the batteries 1, the first positioning mechanism can be used to press the batteries 1 together.

[0052] It should be noted that the first positioning mechanism and the second positioning mechanism may be just plates. The first positioning mechanism can press the battery 1 under the drive of the robotic arm. In some embodiments, it is possible that the first positioning mechanism can press the battery 1 by its own weight alone.

[0053] In one embodiment, combined Figure 1 and Figure 2 As shown, the positioning mechanism includes: a first positioning mechanism 110, which is disposed on the base 100 and includes a first positioning surface 111; and a second positioning mechanism 120, which is disposed on the base 100 and includes a second positioning surface 121. The first positioning surface 111 and the second positioning surface 121 are disposed opposite to each other. The first positioning mechanism 110 and the second positioning mechanism 120 are movably disposed relative to each other to clamp multiple batteries 1 between the first positioning surface 111 and the second positioning surface 121. When the batteries 1 are horizontally stacked on the base 100, the first positioning mechanism 110 and the second positioning mechanism 120 limit and clamp the multiple batteries 1, thereby achieving reliable stacking of the multiple batteries 1.

[0054] In some embodiments, the first positioning mechanism 110 can be fixed to the base 100, and the first stacked batteries 1 can be stacked close to the first positioning mechanism 110. If the battery pack includes a housing 6, during the stacking process, one end plate of the housing 6 can be stacked first. At this time, the end plate can be in contact with the first positioning mechanism 110. Subsequently, each battery 1 is stacked along the end plate. Finally, the other end plate of the housing 6 is stacked. At this time, the end plate is close to the second positioning mechanism 120 and moves in the direction close to the first positioning mechanism 110 through the second positioning mechanism 120, so that the other end plate drives each battery 1 to move, thereby achieving clamping of multiple batteries 1.

[0055] In some embodiments, the first positioning mechanism 110 and the second positioning mechanism 120 can both be movably arranged relative to the base 100. After the end plate and the battery 1 are stacked, the first positioning mechanism 110 and the second positioning mechanism 120 can be moved to clamp the multiple batteries 1.

[0056] In one embodiment, the movement of the first positioning mechanism 110 or the second positioning mechanism 120 can be driven by a drive mechanism 122. The drive mechanism 122 can be an electric mechanism, such as an electric push rod mechanism, or a cylinder piston mechanism, or a hydraulic piston mechanism. The telescopic rod of the drive mechanism 122 is drivenly connected to the first positioning mechanism 110 or the second positioning mechanism 120, thereby driving the first positioning mechanism 110 or the second positioning mechanism 120 to move relative to the base 100. The first positioning mechanism 110 or the second positioning mechanism 120 and the base 100 can be slidably engaged using a slide rail and slider cooperation structure. In some embodiments, the drive mechanism 122 may also employ a manually driven structure, such as a lead screw structure.

[0057] It should be noted that, while ensuring that the first positioning surface 111 and the second positioning surface 121 are planar, the specific structure of the first positioning mechanism 110 or the second positioning mechanism 120 is not limited here.

[0058] In one embodiment, such as Figure 3 As shown, the base 100 is provided with a positioning slider 101 for placing the battery 1. The positioning slider 101 is movably disposed relative to the base 100, so that when the battery pack is pressed by the first positioning mechanism 110 and the second positioning mechanism 120, the battery 1 can drive the positioning slider 101 to move, thereby so that the battery 1 and the base 100 do not directly contact each other, or minimize the friction between the battery 1 and the base 100.

[0059] In one embodiment, when multiple batteries 1 are all mounted on the same positioning slider 101, it is also necessary to ensure that the batteries 1 can move relative to the positioning slider 101 when pressing the batteries 1.

[0060] In one embodiment, there are multiple positioning sliders 101, and each battery 1 corresponds to at least one positioning slider 101 along a direction perpendicular to the stacking direction of the battery pack. The length of the positioning slider 101 that is in contact with the battery 1 along the stacking direction of the battery pack is not greater than the thickness of the battery 1, so that each battery 1 corresponds to an individual positioning slider 101, thereby ensuring reliable contact between the batteries 1 without the battery 1 needing to move relative to the positioning slider 101.

[0061] In one embodiment, a flange edge 9 is provided on the outer circumferential side of the battery 1. Therefore, along the stacking direction of the battery pack, the length of the positioning slider 101 that is in contact with the battery 1 is no greater than the thickness of the battery 1 minus the thickness of the flange edge, thereby ensuring that the positioning slider 101 avoids the flange edge 9. Figure 3 As shown.

[0062] In one embodiment, each battery 1 may correspond to at least two positioning sliders 101. The at least two positioning sliders 101 corresponding to each battery 1 may be arranged along the length direction of the battery 1, and the length direction of the battery 1 may be perpendicular to the stacking direction of the battery pack.

[0063] It should be noted that the positioning slider 101 may be provided with a slide rail, and the base 100 may be provided with a slide rail. The cooperation between the slide rails ensures the reliable movement of the positioning slider 101 along the base 100. The extension direction of the slide rail is the stacking direction of the battery pack.

[0064] In one embodiment, such as Figures 4 to 6 As shown, the alignment mechanism 130 includes: a drive plate 131 disposed on the base 100, the drive plate 131 including a reference surface 1311 extending along the stacking direction of the battery pack; and at least two protrusions 132, each protrusion 132 being spaced apart on the reference surface 1311 along the stacking direction of the battery pack for contacting the side of the battery 1. By ensuring that the surfaces of each protrusion 132 that contact the side of the battery 1 are on the same plane, reliable alignment of the individual batteries 1 in the battery pack is ensured by the contact of each protrusion 132 with the side of the battery 1.

[0065] It should be noted that because the reference surface 1311 of the drive board 131 is provided with multiple protrusions 132, the problem of misalignment of some batteries 1 caused by a single surface being attached to each battery 1 is avoided. In some embodiments, one protrusion 132 on the reference surface 1311 can contact at least two batteries 1. In some embodiments, one protrusion 132 on the reference surface 1311 can contact only one battery 1. The arrangement of multiple protrusions 132 provides greater adaptability while ensuring that the surfaces of each protrusion 132 that are attached to the side of the battery 1 are on the same plane, thus guaranteeing the alignment of different types of batteries 1.

[0066] In one embodiment, the reference surface 1311 extends along the stacking direction of the battery pack in the direction of its length. The reference surface 1311 also has a width direction, which is perpendicular to its length direction. The length of the protrusion 132 along the width direction of the reference surface 1311 can be equal to or less than the width of the reference surface 1311. In some embodiments, it is not excluded that the length of the protrusion 132 along the width direction of the reference surface 1311 can be greater than the width of the reference surface 1311.

[0067] It should be noted that a battery pack consists of multiple batteries, and the direction in which these batteries are arranged sequentially is the stacking direction of the battery pack.

[0068] In one embodiment, the protrusion 132 is provided in a one-to-one correspondence with the battery 1, that is, when aligning each battery 1, each battery 1 corresponds to a protrusion 132, thereby ensuring that each protrusion 132 can contact a battery 1. On the basis of ensuring reliable alignment of each battery 1, the application range of the alignment mechanism 130 can be improved.

[0069] In one embodiment, the lengths of each protrusion 132 along the stacking direction of the battery pack are consistent, that is, the lengths of multiple protrusions 132 along the stacking direction of the battery pack are consistent, so that the alignment mechanism 130 can easily achieve reliable alignment of each battery 1 with the same thickness, and can facilitate the manufacturing of the protrusions 132.

[0070] In one embodiment, at least two protrusions 132 have different lengths along the stacking direction of the battery pack; that is, at least two of the plurality of protrusions 132 may have different lengths along the stacking direction of the battery pack. Some protrusions 132 may have the same length along the stacking direction of the battery pack, while other protrusions 132 may have different lengths along the stacking direction of the battery pack. This design can be adapted to the amount of movement of each battery 1 when it is pressed together, thereby controlling the amount of movement of the battery 1.

[0071] In some embodiments, the lengths of the plurality of protrusions 132 along the stacking direction of the battery pack may all be different. The lengths of the plurality of protrusions 132 along the stacking direction of the battery pack may gradually increase, and the pressing direction of the battery pack may be consistent with the stacking direction of the battery pack, so that when the battery 1 is pressed, the battery 1 at the beginning of the pressing direction may have the maximum amount of movement, and the battery 1 at the end of the pressing direction may have the minimum amount of movement.

[0072] In one embodiment, along the stacking direction of the battery pack, the length of the protrusion 132 that abuts against the side of the battery 1 is no greater than the thickness of the battery 1, thereby preventing one protrusion 132 from contacting two batteries 1, thus improving the alignment of the alignment mechanism 130 with the battery 1.

[0073] It should be noted that when a protrusion 132 is attached to multiple batteries 1, if the consistency of the batteries 1 is high, the alignment of each battery 1 can be guaranteed. However, if the consistency of the batteries 1 is low, the batteries 1 may not be able to align when attached to multiple batteries 1. When a protrusion 132 is in contact with a battery 1, since there is no connecting part between the two protrusions 132, the manufacturing error at the adjacent positions of the two batteries 1 can be ignored, which can improve the alignment of the batteries 1 to a certain extent.

[0074] In some embodiments, the outer circumferential side of the battery 1 may have a flange edge 9, that is, the protrusion 132 needs to avoid the flange edge 9 when aligning the battery 1. Therefore, each battery 1 needs to correspond to a protrusion 132. At this time, along the stacking direction of the battery pack, the length of the protrusion 132 that is in contact with the side of the battery 1 is less than or equal to the thickness of the battery 1 minus the thickness of the flange edge 9.

[0075] In one embodiment, combined Figure 5 As shown, along the stacking direction of the battery pack, the length of the protrusion 132 that is in contact with the side of the battery 1 is 'a', the thickness of the battery 1 is 'b', the thickness of the flange edge 9 of the battery 1 is 'c', and the maximum displacement of the battery 1 along the stacking direction of the battery pack is 'd', where a + d ≤ bc. When the battery pack is pressed together, some batteries 1 can move to ensure reliable contact between them. In this embodiment, the maximum displacement 'd' of the battery 1 along the stacking direction of the battery pack is the maximum distance between the flange edge 9 and the protrusion 132, i.e., the maximum value that the battery 1 can move along the pressing direction is 'd'. Therefore, it is necessary to ensure that a + d ≤ bc to ensure that the protrusion 132 is in contact with the side of the battery 1 without interfering with the flange edge 9. In this embodiment, the protrusion 132 can be fixed relative to the drive plate 131.

[0076] It should be noted that the protrusion 132 can be a rectangular structure. In this case, the length 'a' of the protrusion 132 that is in contact with the side of the battery 1 along the stacking direction of the battery pack is equal to the length of the protrusion 132 along the stacking direction of the battery pack. In some embodiments, the protrusion 132 may be a boss-type structure, that is, the cross-sectional area of ​​the part of the protrusion 132 that connects to the drive plate 131 is relatively large. In order to ensure that the protrusion 132 does not interfere with the flange edge 9, it is necessary to ensure that the cross-sectional area of ​​the part of the protrusion 132 that is in contact with the side of the battery 1 is relatively small. Therefore, in this embodiment, the length 'a' of the protrusion 132 that is in contact with the side of the battery 1 along the stacking direction of the battery pack is limited.

[0077] In one embodiment, the protrusion 132 is movably disposed relative to the drive plate 131 along the stacking direction of the battery pack, so that when the battery pack is pressed, the battery 1 can drive the protrusion 132 to move. Therefore, as long as the protrusion 132 does not interfere with the flange edge 9 of the battery 1, the thickness of the battery 1 minus the thickness of the flange edge 9 can be equal to the length of the protrusion 132 that is in contact with the side of the battery 1 along the stacking direction of the battery pack, that is, the length of the protrusion 132 can be maximized. In some embodiments, the length of the protrusion 132 that is in contact with the side of the battery 1 along the stacking direction of the battery pack can also be less than the thickness of the battery 1 minus the thickness of the flange edge 9.

[0078] When the battery 1 moves the positioning slider 101, the protrusion 132 is movable relative to the drive plate 131, so friction between the protrusion 132 and the battery 1 can be avoided, and the battery 1 can be kept aligned during the movement.

[0079] It should be noted that the protrusion 132 moves relative to the drive plate 131. The cooperation between the protrusion 132 and the drive plate 131 can be a slider and a slide rail cooperation, which can ensure the connection stability between the protrusion 132 and the drive plate 131, and can ensure that the battery 1 can drive the protrusion 132 to move relative to the drive plate 131.

[0080] In one embodiment, the drive plate 131 and the protrusion 132 can be two independently machined structures, connected after independent machining. In this case, the drive plate 131 and the protrusion 132 can be fixedly connected, meaning the protrusion 132 cannot move relative to the drive plate 131. Alternatively, the protrusion 132 can move relative to the drive plate 131, and the engagement between the protrusion 132 and the drive plate 131 can be a slider-track engagement.

[0081] In one embodiment, the drive plate 131 and the protrusion 132 are integrally formed, which not only simplifies the processing and manufacturing process but also improves the stability of the structure.

[0082] In one embodiment, the alignment mechanism 130 includes: a drive plate 131, the drive plate 131 including a reference surface 1311 extending along the stacking direction of the battery pack; and a protrusion 132 disposed on the reference surface 1311 for contacting the side of the battery 1; wherein, along the stacking direction of the battery pack, the length of the protrusion 132 contacting the side of the battery 1 is no greater than the thickness of the battery 1. Since the length of the protrusion 132 contacting the side of the battery 1 along the stacking direction of the battery pack is no greater than the thickness of the battery 1, the protrusion 132 can contact the battery 1 individually, thereby improving the adaptability of the alignment mechanism 130 and meeting the alignment requirements of different batteries 1. In this embodiment, the drive plate 131 may have one protrusion 132.

[0083] In one embodiment, such as Figure 7 As shown, the alignment mechanism 130 also includes a substrate 103, which is detachably mounted on the base 100, and a drive plate 131 disposed on the substrate, so that the alignment mechanism 130 can be removed from the base 100 to make way for other mechanisms.

[0084] In one embodiment, the substrate 103 of the alignment mechanism 130 is movably disposed relative to the base 100, thereby allowing the protrusion 132 on the drive plate 131 to fit against the battery 1, thus ensuring reliable alignment of each battery 1.

[0085] In one embodiment, the substrate 103 of the alignment mechanism 130 is movably disposed along the stacking direction of the battery pack, thereby creating a clearance space between the alignment mechanism 130 and the battery pack for placing other structures.

[0086] In one embodiment, the substrate 103 of the alignment mechanism 130 is movably disposed in a direction close to or away from the battery pack, so that the protrusion 132 on the drive plate 131 fits against the battery 1, thereby ensuring that each battery 1 is reliably aligned.

[0087] In one embodiment, such as Figure 7 As shown, the stacking device also includes: a base plate 102, a substrate 103 disposed on the base plate 102, a first guide rail 104 disposed on the base 100, the first guide rail 104 extending along the stacking direction of the battery pack, a connecting block 105 disposed on the first guide rail 104, a second guide rail 106 disposed on the connecting block 105, the second guide rail 106 extending along the direction close to the battery pack, the base plate 102 disposed on the second guide rail 106, the base plate 102 can drive the substrate 103 to move along the second guide rail 106, and the connecting block 105 can drive the base plate 102 to move along the first guide rail 104, so that the substrate 103 is movably disposed along the stacking direction of the battery pack, and the substrate 103 is movably disposed along the direction close to or away from the battery pack.

[0088] In one embodiment, there may be two substrates 103, located on opposite sides of the battery pack, and each substrate 103 is provided with an alignment mechanism 130. The alignment mechanisms 130 on both sides of the battery pack can perform simultaneous alignment operations, thereby achieving reliable alignment of each battery 1. In some embodiments, the alignment of the batteries 1 may be performed using only one alignment mechanism 130.

[0089] In one embodiment, the stacking device further includes a welding clamping mechanism disposed on the base 100. The welding clamping mechanism is used to press the first bus 2 against the second bus 3 to perform welding on the first bus 2 and the second bus 3 via a welding mechanism. And / or, the welding clamping mechanism is used to press the signal acquisition terminal 5 of the circuit board 4 against the first bus 2, thereby achieving welding between the signal acquisition terminal 5 and the first bus 2 via a welding mechanism. Pressing the first bus 2 against the second bus 3 causes the first bus 2 and the second bus 3 to be in contact.

[0090] It should be noted that when batteries 1 are stacked, each battery 1 is equipped with a busbar. When the alignment mechanism 130 is attached to the side of each battery 1, the alignment mechanism 130 avoids the busbars located on the side of the battery 1, that is, the alignment mechanism 130 is positioned opposite to the busbars on the side of the battery 1. After the battery pack is pressed together, the first busbar 2 of two adjacent batteries 1 can be pressed to the second busbar 3 by the welding and pressing mechanism, so as to perform subsequent welding. After the welding of the first busbar 2 and the second busbar 3 is completed, the signal acquisition terminal 5 of the circuit board 4 can be pressed to the first busbar 2 by the welding and pressing mechanism, so as to achieve the welding of the signal acquisition terminal 5 and the first busbar 2 by the welding mechanism.

[0091] In one embodiment, please refer to Figure 8 and Figure 9 The welding clamping mechanism includes: a first welding clamping mechanism 140, which is used to press the first busbar 2 onto the second busbar 3. The first welding clamping mechanism 140 includes: a first connector 141; a first pressing block 142, which is disposed on the first connector 141 and is used to press onto the first busbar 2. The first pressing block 142 is provided with a first clearance space 1421 that exposes the first busbar 2, so that the welding mechanism can weld the first busbar 2 and the second busbar 3.

[0092] It should be noted that the first busbar 2 and the second busbar 3 belong to two batteries respectively, and the first busbar 2 is pressed on the second busbar 3. The first pressing block 142 presses the first busbar 2 onto the second busbar 3, so that a good welding effect can be guaranteed when the welding mechanism welds the first busbar 2 and the second busbar 3.

[0093] The first busbar 2 and the second busbar 3 are located on the side of the battery pack. The first pressure block 142 presses the first busbar 2 and the second busbar 3 on the side to facilitate the welding of the first busbar 2 and the second busbar 3.

[0094] In one embodiment, such as Figure 8As shown, the first connector 141 includes a first connecting portion 1411 and a second connecting portion 1412. The second connecting portion 1412 is connected to the first connecting portion 1411, and there is an included angle between the second connecting portion 1412 and the first connecting portion 1411, such that the second connecting portion 1412 is disposed opposite to the side of the battery pack. A first pressing block 142 is disposed on the second connecting portion 1412. The first connecting portion 1411 and the second connecting portion 1412 are substantially perpendicular. The first connecting portion 1411 is disposed on the substrate 103 of the first welding and pressing mechanism 140.

[0095] In one embodiment, the first clearance space 1421 is a notch, so that the two opposing first pressing parts 1422 forming the first clearance space 1421 are pressed onto the same first busbar 2, thereby ensuring sufficient pressing force and ensuring that the welding mechanism welds the first busbar 2 and the second busbar 3 through the first clearance space 1421 on the first pressing block 142.

[0096] In one embodiment, the first clearance space 1421 can be a through hole, that is, the first clearance space 1421 can be located in the middle of the first pressure block 142.

[0097] In one embodiment, there are at least two first clearance spaces 1421, such that the first pressure block 142 is pressed onto at least two first busbars 2, thereby the clamping of at least two first busbars 2 can be achieved by a first welding clamping mechanism 140.

[0098] In one embodiment, the first pressing block 142 has a centrally symmetrical structure, which not only ensures the strength of the first pressing block 142, but also ensures that the first pressing block 142 can reliably press the first busbar 2.

[0099] In one embodiment, such as Figure 9 As shown, the first pressing block 142 is provided with two first clearance spaces 1421, and the first clearance spaces 1421 are notches, thereby forming four first pressing parts 1422 on the first pressing block 142, and the two pairs of first pressing parts 1422 respectively press the two first busbars 2.

[0100] In one embodiment, the first pressure block 142 is detachably mounted on the first connector 141.

[0101] In some embodiments, the first pressing block 142 and the first connecting member 141 can be non-detachably connected, the first pressing block 142 and the first connecting member 141 can be integrally formed, or the first pressing block 142 and the first connecting member 141 can be welded.

[0102] In one embodiment, the first pressing block 142 is movably disposed relative to the first connector 141, so that its position can be adjusted during the process of the first pressing block 142 pressing the first busbar 2, ensuring reliable fit between the first busbar 2 and the second busbar 3.

[0103] It should be noted that due to the structural limitations of the first busbar 2 and the second busbar 3, there may be a positional deviation during the process of the first pressing block 142 pressing onto the first busbar 2, which may result in the first busbar 2 failing to reliably fit with the second busbar 3. In this embodiment, by making the first pressing block 142 movably disposed relative to the first connecting member 141, the position of the first pressing block 142 can be adjusted during the process of pressing onto the first busbar 2, thus ensuring a reliable fit between the first busbar 2 and the second busbar 3, thereby guaranteeing the subsequent welding quality.

[0104] In one embodiment, such as Figure 8 and Figure 9 As shown, the first welding clamping mechanism 140 further includes: a first fastener 143, with the first pressing block 142 mounted on the first connecting member 141 via the first fastener 143; and a first elastic member 144, which is sleeved on the first fastener 143. The first fastener 143 is fixed to the first connecting member 141, while the first elastic member 144 is pressed between the first pressing block 142 and the first fastener 143. Therefore, when the first pressing block 142 moves relative to the first connecting member 141, it can compress the first elastic member 144. The first elastic member 144 can both provide a buffering effect and prevent the first pressing block 142 from moving too much.

[0105] In one embodiment, the first pressure block 142 can be connected to the first connector 141 by at least two first fasteners 143 and corresponding first elastic elements 144.

[0106] In one embodiment, the first fastener 143 may be a bolt, the first fastener 143 is fixedly connected to the first connector 141, and the first pressure block 142 is movably disposed relative to the first fastener 143. The first elastic member 144 may be a spring or a rubber structure, etc.

[0107] In one embodiment, the substrate 103 of the first welding clamping mechanism 140 is movably disposed relative to the base 100, thereby enabling the substrate 103 to drive the first welding clamping mechanism 140 to press the first busbar 2 onto the second busbar 3.

[0108] In one embodiment, the substrate 103 of the first welding clamping mechanism 140 is movably disposed along the stacking direction of the battery pack, thereby creating a clearance space between the first welding clamping mechanism 140 and the battery pack for placing other structures.

[0109] In one embodiment, the substrate 103 of the first welding clamping mechanism 140 is movably disposed in a direction close to or away from the battery pack, such that the first welding clamping mechanism 140 presses the first busbar 2 onto the second busbar 3.

[0110] In one embodiment, such as Figure 8 As shown, the base 100 is provided with a base plate 102, the substrate 103 of the first welding and pressing mechanism 140 is provided on the base plate 102, the base 100 is provided with a first guide rail 104, the first guide rail 104 extends along the stacking direction of the battery pack, the first guide rail 104 is provided with a connecting block 105, the connecting block 105 is provided with a second guide rail 106, the second guide rail 106 extends along the direction close to the battery pack, the base plate 102 is provided on the second guide rail 106, the base plate 102 can drive the substrate 103 to move along the second guide rail 106, and the connecting block 105 can drive the base plate 102 to move along the first guide rail 104, so that the substrate 103 is movably provided along the stacking direction of the battery pack, and the substrate 103 is movably provided along the direction close to or away from the battery pack.

[0111] In one embodiment, there are multiple first welding clamping mechanisms 140, all of which are disposed on the substrate 103, thereby enabling the clamping of multiple first busbars 2 at one time, thereby improving the welding efficiency of the first busbars 2 and the second busbars 3.

[0112] In one embodiment, the first welding clamping mechanism 140 can have two substrates 103, which are located on opposite sides of the battery pack. Both substrates 103 are provided with the first welding clamping mechanism 140. The first welding clamping mechanisms 140 on both sides of the battery pack can clamp simultaneously, thereby fixing the battery pack without the need for additional fixing structures to fix the battery pack as a whole.

[0113] In one embodiment, such as Figure 10 and Figure 11 As shown, the welding clamping mechanism includes a second welding clamping mechanism 150, which is used to press the signal acquisition terminal 5 of the circuit board 4 onto the first busbar 2. The second welding clamping mechanism 150 includes: a second connector 151; a second pressing block 152, which is disposed on the second connector 151; and a third pressing block 153, which is disposed on the second connector 151. The second pressing block 152 and the third pressing block 153 are used to press onto the same signal acquisition terminal 5. The second pressing block 152 and the third pressing block 153 expose the portion of the signal acquisition terminal 5 so that the welding mechanism can weld the signal acquisition terminal 5 and the first busbar 2.

[0114] It should be noted that the second pressure block 152 and the third pressure block 153 are pressed on the same signal acquisition terminal 5, so that the signal acquisition terminal 5 can make reliable contact with the first busbar 2. When welding is performed by the welding mechanism, the signal acquisition terminal 5 and the first busbar 2 can have a reliable welding connection surface. For example, when the signal acquisition terminal 5 and the first busbar 2 are laser welded, it is necessary to ensure that the signal acquisition terminal 5 and the first busbar 2 are reliably attached.

[0115] The signal acquisition terminal 5 and the first busbar 2 are located on the side of the battery pack. The second pressure block 152 and the third pressure block 153 press the signal acquisition terminal 5 and the first busbar 2 on the side to facilitate the welding of the signal acquisition terminal 5 and the first busbar 2.

[0116] In one embodiment, such as Figure 11 As shown, the second connector 151 includes a third connector 1511 and a fourth connector 1512. The fourth connector 1512 is connected to the third connector 1511, and there is an included angle between the fourth connector 1512 and the third connector 1511, so that the fourth connector 1512 is disposed opposite to the side of the battery pack. A second pressing block 152 and a third pressing block 153 are disposed on the fourth connector 1512. The third connector 1511 and the fourth connector 1512 are substantially perpendicular. The third connector 1511 is disposed on the substrate 103.

[0117] In one embodiment, the third connecting portion 1511 may be a connecting block, the fourth connecting portion 1512 may be at least two, and the second pressing block 152 is disposed on at least two of the fourth connecting portions 1512. The third pressing block 153 is disposed on at least two of the fourth connecting portions 1512. The second pressing block 152 is disposed on at least two of the fourth connecting portions 1512 by means of a second fastener 154 and a second elastic member 155. The third pressing block 153 is disposed on at least two of the fourth connecting portions 1512 by means of a second fastener 154 and a second elastic member 155.

[0118] In one embodiment, circuit board 4 can be a flexible printed circuit board, i.e., an FPC (Flexible Printed Circuit), and circuit board 4 can include functions such as voltage acquisition and temperature acquisition. The signal acquisition terminal 5 can be made of nickel foil.

[0119] In one embodiment, such as Figure 10 and Figure 11 As shown, the second pressing block 152 and the third pressing block 153 are spaced apart to press on the opposite ends of the signal acquisition terminal 5 respectively; wherein, a second clearance space 157 is formed between the second pressing block 152 and the third pressing block 153 to expose the signal acquisition terminal 5, so that the welding mechanism can weld the signal acquisition terminal 5 and the first busbar 2 through the second clearance space 157.

[0120] The second pressure block 152 and the third pressure block 153 are pressed on the signal acquisition terminal 5 at intervals, so that the signal acquisition terminal 5 and the first busbar 2 can make reliable contact. This ensures that when the signal acquisition terminal 5 and the first busbar 2 are welded in the future by means of laser welding, the signal acquisition terminal 5 and the first busbar 2 can be reliably welded.

[0121] In one embodiment, the second pressure block 152 is detachably disposed on the second connector 151. The third pressure block 153 is detachably disposed on the second connector 151.

[0122] In some embodiments, the second pressing block 152 and the second connecting member 151 can be non-detachably connected, and the third pressing block 153 and the second connecting member 151 can be non-detachably connected. The second pressing block 152 and the second connecting member 151 can be integrally formed, or the second pressing block 152 and the second connecting member 151 can be welded together. The third pressing block 153 and the second connecting member 151 can be integrally formed, or the third pressing block 153 and the second connecting member 151 can be welded together.

[0123] In one embodiment, such as Figure 11 As shown, the second pressing block 152 includes a first connecting body 1521, a second pressing part 1522, and a third pressing part 1523. The first connecting body 1521 is disposed on the second connector 151, and the second pressing part 1522 and the third pressing part 1523 are disposed on the first connecting body 1521. The second pressing part 1522 and the third pressing part 1523 are used to press against the signal acquisition terminal 5.

[0124] In some embodiments, the second clamping part 1522 and the third clamping part 1523 may be clamped onto the same signal acquisition terminal 5 to ensure reliable clamping of the signal acquisition terminal 5.

[0125] In some embodiments, the second pressing part 1522 and the third pressing part 1523 are arranged at intervals to press the two signal acquisition terminals 5 respectively, so that the two signal acquisition terminals 5 can be pressed by a second welding pressing mechanism 150.

[0126] In one embodiment, such as Figure 11 As shown, the third pressing block 153 includes a second connecting body 1531, a fourth pressing part 1532, and a fifth pressing part 1533. The second connecting body 1531 is disposed on the second connecting member 151, and the fourth pressing part 1532 and the fifth pressing part 1533 are disposed on the second connecting body 1531. The fourth pressing part 1532 and the fifth pressing part 1533 are used to press against the signal acquisition terminal 5.

[0127] In some embodiments, the fourth clamping part 1532 and the fifth clamping part 1533 may be clamped onto the same signal acquisition terminal 5 to ensure reliable clamping of the signal acquisition terminal 5.

[0128] In some embodiments, the fourth pressing part 1532 and the fifth pressing part 1533 are spaced apart to press the two signal acquisition terminals 5 respectively, so that the two signal acquisition terminals 5 can be pressed by a second welding pressing mechanism 150.

[0129] In one embodiment, the second pressing portion 1522 of the second pressing block 152 and the fourth pressing portion 1532 of the third pressing block 153 simultaneously press against a signal acquisition terminal 5, forming a second clearance space 157 between the second pressing portion 1522 and the fourth pressing portion 1532. Similarly, the third pressing portion 1523 of the second pressing block 152 and the fifth pressing portion 1533 of the third pressing block 153 simultaneously press against another signal acquisition terminal 5, forming another second clearance space 157 between the second pressing portion 1522 and the fourth pressing portion 1532.

[0130] In some embodiments, it is not excluded that the second pressing block 152 and the third pressing block 153 may also include other pressing parts to press other signal acquisition terminals 5.

[0131] In one embodiment, such as Figure 10 As shown, the second pressing part 1522 and the third pressing part 1523 are provided with a notch 156 at the end facing the signal acquisition terminal 5, thereby reducing the contact area between the second pressing part 1522 and the third pressing part 1523 and the signal acquisition terminal 5. While ensuring the structural strength of the second pressing block 152, the signal acquisition terminal 5 can be avoided from being excessively pressed.

[0132] In one embodiment, such as Figure 10 As shown, the fourth pressing part 1532 and the fifth pressing part 1533 are provided with notches 156 at the ends facing the signal acquisition terminal 5, thereby reducing the contact area between the fourth pressing part 1532 and the fifth pressing part 1533 and the signal acquisition terminal 5. While ensuring the structural strength of the third pressing block 153, excessive pressing of the signal acquisition terminal 5 can be avoided.

[0133] In one embodiment, the notch 156 of the second pressing part 1522 is configured to be opposite to the notch 156 of the fourth pressing part 1532, and the notch 156 of the third pressing part 1523 is configured to be opposite to the notch 156 of the fifth pressing part 1533.

[0134] In one embodiment, the second pressure block 152 is movably disposed relative to the second connector 151, and / or the third pressure block 153 is movably disposed relative to the second connector 151, so that the position can be adjusted during the process of the second pressure block 152 and the third pressure block 153 pressing the signal acquisition terminal 5, so as to ensure reliable contact between the signal acquisition terminal 5 and the first busbar 2.

[0135] It should be noted that, due to the thinness of the signal acquisition end 5, there may be positional deviations during the pressing of the second pressure block 152 and the third pressure block 153 onto the signal acquisition end 5, resulting in the signal acquisition end 5 failing to reliably adhere to the first busbar 2. In this embodiment, by making the second pressure block 152 movably disposed relative to the second connector 151 and the third pressure block 153 movably disposed relative to the second connector 151, the positions of the second pressure block 152 and the third pressure block 153 can be adjusted during the pressing of the signal acquisition end 5, thus ensuring a reliable fit between the signal acquisition end 5 and the first busbar 2, thereby guaranteeing the subsequent welding quality.

[0136] In one embodiment, such as Figure 10 As shown, the second welding clamping mechanism 150 further includes: at least two second fasteners 154, a second pressing block 152 is disposed on the second connecting member 151 by at least one second fastener 154, and a third pressing block 153 is disposed on the second connecting member 151 by at least one second fastener 154; and at least two second elastic members 155, which are sleeved on the corresponding second fasteners 154. The second fasteners 154 are fixed on the second connecting member 151, and the second elastic members 155 are pressed between the second pressing block 152 and the second fasteners 154. Therefore, when the second pressing block 152 moves relative to the second connecting member 151, it can compress the second elastic members 155. The second elastic members 155 can both provide a buffering effect and prevent the second pressing block 152 from moving too much. Correspondingly, a second elastic element 155 is pressed between the third pressure block 153 and the second fastener 154. Therefore, when the third pressure block 153 moves relative to the second connector 151, the second elastic element 155 can be compressed. The second elastic element 155 can both buffer and prevent the third pressure block 153 from moving too much.

[0137] In one embodiment, the second pressure block 152 can be connected to the second connector 151 by at least two second fasteners 154 and corresponding second elastic elements 155. The third pressure block 153 can be connected to the second connector 151 by at least two second fasteners 154 and corresponding second elastic elements 155.

[0138] In one embodiment, the second fastener 154 may be a bolt, the second fastener 154 is fixedly connected to the second connector 151, and the second pressure block 152 and the third pressure block 153 are movably disposed relative to the second fastener 154. The second elastic member 155 may be a spring or a rubber structure, etc.

[0139] In one embodiment, the second connector 151 is disposed on the substrate 103 of the second welding and pressing mechanism 150; wherein the substrate 103 is movably disposed relative to the base 100, so that the substrate 103 can drive the second welding and pressing mechanism 150 to press the signal acquisition terminal 5 onto the first busbar 2.

[0140] In one embodiment, the substrate 103 of the second welding clamping mechanism 150 is movably disposed along the stacking direction of the battery pack, thereby creating a clearance space between the second welding clamping mechanism 150 and the battery pack for placing other structures.

[0141] In one embodiment, the substrate 103 of the second welding clamping mechanism 150 is movably disposed in a direction close to or away from the battery pack, thereby causing the second welding clamping mechanism 150 to press the signal acquisition terminal 5 onto the first busbar 2.

[0142] In one embodiment, such as Figure 10 As shown, the base 100 is provided with a base plate 102, and the substrate 103 of the second welding and pressing mechanism 150 is provided on the base plate 102. The base 100 is provided with a first guide rail 104, which extends along the stacking direction of the battery pack. A connecting block 105 is provided on the first guide rail 104, and a second guide rail 106 is provided on the connecting block 105. The second guide rail 106 extends along the direction close to the battery pack. The base plate 102 is provided on the second guide rail 106. The base plate 102 can drive the substrate 103 to move along the second guide rail 106, and the connecting block 105 can drive the base plate 102 to move along the first guide rail 104, so that the substrate 103 is movably arranged along the stacking direction of the battery pack and movably arranged along the direction close to or away from the battery pack. In some embodiments, the stacking device may further include a positioning clamp 108, which is used to fix the base plate 102 to the base 100, and when the base plate 102 needs to move along the second guide rail 106, the positioning clamp 108 makes the base plate 102 non-fixed relative to the base 100. The positioning clamp 108 may be a fixed structure in related technologies such as a telescopic structure or a pressing block structure, and is not limited here.

[0143] In one embodiment, there are multiple second welding clamping mechanisms 150, all of which are disposed on the substrate 103, thereby enabling the clamping of multiple signal acquisition terminals 5 at one time, thereby improving the welding efficiency of the signal acquisition terminals 5 and the first busbar 2.

[0144] In one embodiment, the second welding clamping mechanism 150 can have two substrates 103, which are located on opposite sides of the battery pack. The second welding clamping mechanism 150 is provided on both substrates 103. The second welding clamping mechanisms 150 on both sides of the battery pack can clamp simultaneously, thereby fixing the battery pack without the need for additional fixing structures to fix the battery pack as a whole.

[0145] In some embodiments, the substrate 103 of the first welding clamping mechanism 140 and the substrate 103 of the second welding clamping mechanism 150 may be the same substrate. That is, after the first welding clamping mechanism 140 completes clamping, it can be removed from the substrate, and the second welding clamping mechanism 150 can be installed on the substrate 103. In some embodiments, the substrate 103 of the alignment mechanism 130 may be the same substrate as the substrate 103 of the first welding clamping mechanism 140 and the substrate 103 of the second welding clamping mechanism 150, and the alignment mechanism 130 may be installed on the same substrate simultaneously with either the first welding clamping mechanism 140 or the second welding clamping mechanism 150. Figure 2 As shown, the second welding clamping mechanism 150 and the alignment mechanism 130 can share a single substrate 103.

[0146] In some embodiments, the substrate 103 of the first welding clamping mechanism 140 and the substrate 103 of the second welding clamping mechanism 150 may be two separate substrates. The substrates 103 of the first welding clamping mechanism 140 and the second welding clamping mechanism 150 are detachably mounted on the base plate 102. This allows the substrate 103 of the first welding clamping mechanism 140 to be removed from the base plate 102 after the first welding clamping mechanism 140 has completed clamping, and the substrate 103 of the second welding clamping mechanism 150 to be mounted on the base plate 102. The substrate 103 of the alignment mechanism 130 may not be the same substrate as the substrates 103 of the first welding clamping mechanism 140 and the second welding clamping mechanism 150. The substrate 103 of the alignment mechanism 130 may also be directly removed from the base plate 102.

[0147] It should be noted that the alignment mechanism 130, the first welding clamping mechanism 140 and the second welding clamping mechanism 150 can be selectively installed on the base 100, that is, the disassembly and installation of each mechanism can be realized according to the specific stacking process.

[0148] In some embodiments, a gripping part 107 may also be provided on the substrate 103. The gripping part 107 is used to connect with an external mechanism so that the substrate 103 can be easily removed from the base 100. There may be at least two gripping parts 107.

[0149] In one embodiment, such as Figure 12 As shown, the stacking device also includes a limiting member 160, which spans multiple batteries 1 of the battery pack. The two ends of the limiting member 160 are respectively used to connect to two opposite connecting portions 7 of the battery pack housing 6 to prevent the battery pack from deforming due to excessive tightening force of the cable ties 8. By having the limiting member 160 span multiple batteries 1 of the battery pack and connecting its two ends to two opposite connecting portions 7 of the housing 6, the limiting member 160 prevents deformation of the battery pack housing 6 due to excessive tightening force of the cable ties 8 when the battery pack is secured with cable ties 8.

[0150] It should be noted that after the multiple batteries 1 are stacked, they are located inside the housing 6. The housing 6 is then secured tightly with cable ties 8. Figure 13 As shown. To ensure the fit between multiple batteries 1, the tightening force of the cable ties 8 is relatively large. In this embodiment, by connecting an integral limiting member 160 to the two opposite connecting parts 7 of the housing 6, the limiting member 160 forms a limiting structure, which can generate a reverse force with the tightening force. Even if the tightening force applied during the tightening of the cable ties 8 is large, the battery pack will not deform.

[0151] In one embodiment, the housing 6 includes two opposing end plates, with multiple batteries 1 clamped between them. The two ends of the limiting member 160 are respectively connected to the two opposing end plates, i.e., each end plate is provided with a connecting portion 7. In some embodiments, the housing 6 may further include two side covers, which are arranged opposite each other to reliably surround the multiple batteries 1. Cable ties 8 are wrapped around the two end plates and the two side covers to secure the multiple batteries 1. Figure 13 As shown.

[0152] It should be noted that the limiting member 160 spans multiple batteries 1 of the battery pack, meaning that the limiting member 160 needs to connect to two opposing end plates to clamp the multiple batteries between the two opposing end plates. The limiting member 160 can be connected to the top of the two end plates, such as... Figure 12 As shown. In some embodiments, it is not excluded that the limiting member 160 is connected to the side of the end plate. In this case, part of the limiting member 160 may be located above the battery pack, or the limiting member 160 may be located entirely on the side of the battery pack.

[0153] In one embodiment, the limiting member 160 can be a limiting rod that spans multiple batteries 1 of the battery pack and extends along the stacking direction of the battery pack, that is, the length direction of the limiting rod can be the stacking direction of the battery pack.

[0154] It should be noted that the limiting rod can be a rod-shaped structure, which can be a hollow rod or a solid rod; no limitation is made here. In some embodiments, the limiting rod can be a plate-shaped structure, which serves to limit the position of the housing 6. In one embodiment, the limiting rod is a one-piece molded structure, which not only simplifies the molding process but also ensures structural strength.

[0155] In one embodiment, the limiting member 160 and the connecting part 7 can be connected by fasteners. For example, holes are provided in the limiting member 160 and the housing 6, i.e., the connecting part 7 can have holes. Fasteners are inserted into the holes in the limiting member 160 and the housing 6, thereby achieving the connection between the limiting member 160 and the connecting part 7. The fasteners can be threaded connections such as bolts and screws, or fasteners can be structures such as pins and keys, as long as the connection between the limiting member 160 and the connecting part 7 can be achieved.

[0156] In one embodiment, the limiting member 160 is used to engage with the connecting part 7, which not only facilitates connection but also makes it convenient to disassemble the limiting member 160 later.

[0157] In one embodiment, the limiting member 160 has adapter portions 161 at both ends, and the two adapter portions 161 are used to connect the two connecting portions 7 respectively. This allows the limiting member 160 to be directly connected to the connecting portions 7 through the adapter portions 161 without the need for external components, thus simplifying the structure. The adapter portions 161 and the connecting portions 7 can be a mating structure of protrusions and grooves, or a mating structure of protrusions and through holes, or a snap-fit ​​mating structure, or a surface-to-surface bonding structure.

[0158] In one embodiment, the adapter 161 and the connecting part 7 are a mating structure of a protrusion and an installation space. That is, one of the adapter 161 and the connecting part 7 is a protrusion and the other is an installation space. The protrusion and the installation space are mated, which can ensure the stability of the connection and simplify the structure.

[0159] In some embodiments, the protrusion can be a columnar structure, and the mounting space can be a hole-like structure, with the columnar structure inserted into the hole-like structure to achieve connection. The columnar structure can be a circular column, and the hole-like structure can be a circular hole; alternatively, the columnar structure can be a rectangular column, and the hole-like structure can be a rectangular hole, without limitation.

[0160] In one embodiment, the protrusion is a limiting shaft, and the mounting space is a mounting hole. The limiting shaft is inserted into the mounting hole, thereby connecting the limiting member 160 to the housing 6. This not only simplifies the structure but also facilitates the connection and disassembly of the limiting member 160. The limiting shaft can be a cylindrical structure or a polygonal structure, such as a rectangular columnar structure. The limiting shaft can be a columnar structure with a consistent cross-sectional area at all positions, or it can include multiple columnar structures of different sizes.

[0161] In some embodiments, the adapter 161 can be a limiting shaft, and the connecting part 7 is a mounting hole. The adapter 161 of the limiting member 160 is directly inserted into the connecting part 7, thereby achieving reliable installation.

[0162] In some embodiments, the adapter 161 can be a mounting hole, and the connecting part 7 is a limiting shaft. The adapter 161 of the limiting member 160 is used to insert the connecting part 7, thereby achieving reliable installation. The limiting shaft on the housing 6 can be an external component, that is, it can be removed after use. In some embodiments, it is also possible that the limiting shaft on the housing 6 can be part of the housing 6.

[0163] In one embodiment, such as Figure 14 As shown, at least one of the two limiting shafts includes a first shaft segment 1611 and a second shaft segment 1612 connected to each other. The cross-sectional area of ​​the first shaft segment 1611 is larger than the cross-sectional area of ​​the second shaft segment 1612. The second shaft segment 1612 is used to be inserted into the mounting hole.

[0164] When the adapter 161 is a limiting shaft, the first shaft segment 1611 is used to connect to the limiting member 160. In order to ensure the structural stability of the limiting member 160 and the adapter 161, the first shaft segment 1611 needs to have sufficient strength to avoid damage, since the adapter 161 is part of the limiting member 160. The second shaft segment 1612 is used to realize the detachable connection with the housing 6. The torque applied by the cable tie 8 to the first shaft segment 1611 is greater, while that of the second shaft segment 1612 is relatively smaller. Therefore, the cross-sectional area of ​​the first shaft segment 1611 is greater than that of the second shaft segment 1612, and the strength of the first shaft segment 1611 is greater than that of the second shaft segment 1612.

[0165] When the connecting part 7 is a limiting shaft, the first shaft segment 1611 is used to connect to the housing 6. In order to ensure the structural stability of the limiting member 160 and the connecting part 7, it is necessary to ensure that the first shaft segment 1611 has sufficient strength to avoid damage.

[0166] In one embodiment, the first shaft segment 1611 is a cylindrical structure, and the second shaft segment 1612 is a cylindrical structure.

[0167] In one embodiment, such as Figure 14As shown, the adapter 161 is a limiting shaft, and the limiting member 160 is provided with at least one waist-shaped hole 162, and the limiting shaft is installed in the waist-shaped hole 162; wherein, the position of the limiting shaft relative to the waist-shaped hole 162 is adjustable, thereby reducing the precision requirements of the structure and improving the assembly efficiency of the limiting member 160 and the battery module.

[0168] It should be noted that the length direction of the oblong hole 162 can be the length direction of the limiting member 160, that is, the length direction of the oblong hole 162 can be parallel to the stacking direction of the battery pack. In some embodiments, the length direction of the oblong hole 162 can be perpendicular to the stacking direction of the battery pack. The columnar structure can move in a direction parallel to the stacking direction of the battery pack or in a direction perpendicular to the stacking direction of the battery pack, thereby effectively adjusting the position of the adapter 161 and facilitating the connection between the adapter 161 and the connecting part 7.

[0169] In one embodiment, such as Figure 14 As shown, the limiting member 160 has two holes at each end, one being an oblong hole 162 and the other a circular hole 163. Two limiting shafts are respectively disposed within the circular hole 163 and the oblong hole 162. When the two limiting shafts are connected to the two mounting holes, the installation position of the limiting shafts and the oblong hole 162 can be adjusted according to the distance between the two mounting holes. This facilitates the connection between the two limiting shafts on the limiting member 160 and the two mounting holes on the housing 6. The movement of the limiting shafts relative to the oblong hole 162 allows for a certain amount of movement between the limiting member 160 and the housing 6. In this embodiment, the length direction of the oblong hole 162 can be parallel to the stacking direction of the battery pack. In some embodiments, after the limiting shafts are moved into position, they can also be locked onto the limiting member 160 using bolts or other structures.

[0170] In one embodiment, the length of the limiting member 160 is adjustable, which can reduce the precision requirements of the structure, improve the assembly efficiency of the limiting member 160 and the battery module, and also increase the application range of the limiting member 160.

[0171] It should be noted that when the limiting member 160 is used with battery packs of the same specification (i.e., the number of batteries in the battery pack is consistent), however, in some cases, the distance between the two end plates of each battery pack may vary. By making the length of the limiting member 160 adjustable, it can be ensured that the same limiting member 160 can accommodate battery packs with varying lengths. Alternatively, when the battery pack includes different numbers of batteries, the length of the limiting member 160 can also be adjusted to accommodate these variations.

[0172] In one embodiment, the limiting member 160 may include two interlocking segments, which are movably arranged relative to each other to achieve length adjustment of the limiting member 160. Once the length requirement is met, it can be locked using fasteners. In some embodiments, the limiting member 160 may include a power source, which includes a telescopic structure. The power source may be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder, thereby pushing the telescopic rod to extend and retract, thus achieving length adjustment of the limiting member 160.

[0173] In one embodiment, such as Figure 12 and Figure 14 As shown, a handle 164 may be provided on the limiting member 160, which facilitates the operator to grasp the limiting member 160. There may be at least two handles 164.

[0174] In one embodiment, at least two adapter portions 161 may be provided at both ends of the limiting member 160, and at least two connecting portions 7 may be provided on both end plates of the housing 6, thereby achieving a reliable connection between the limiting member 160 and the housing 6.

[0175] In one embodiment, the stacking device may include at least two limiting members 160, thereby reliably protecting the battery pack through the at least two limiting members 160.

[0176] In one embodiment, the battery pack is placed on the base 100, and the housing 6 is connected to the base 100. That is, during the process of tightening the cable ties 8, not only is the battery pack limited by the limiting member 160, but also, in conjunction with the connection between the housing 6 and the base 100, the deformation of the battery module can be reliably prevented.

[0177] It should be noted that the housing 6 is connected to the base 100, and a pin can be provided on the base 100, and the end plate of the housing 6 can be connected to the pin. Other structures can be provided on the base 100 to support the end plate and connect to it; this is not limited here and can be selected according to actual needs.

[0178] It should be noted that when using a cable tie machine to tie the housing 6, the base plate 103 of the second welding clamping mechanism 150 needs to be moved along the stacking direction of the battery pack to form a clearance space on the side of the battery pack for placing the cable tie machine.

[0179] An embodiment of the present invention also provides a battery pack assembly line, including the stacking equipment described above.

[0180] An embodiment of the present invention provides a battery pack assembly line including a stacking device. The stacking device includes a base 100, a positioning mechanism, and an alignment mechanism 130. Multiple batteries 1 are stacked on the base 100, and the alignment mechanism 130 aligns each battery 1. Subsequently, the positioning mechanism clamps the aligned batteries 1, thereby achieving the stacking of the battery pack.

[0181] In one embodiment, the assembly line further includes a welding mechanism; wherein the welding mechanism is used to weld the busbars and terminals of battery 1; or, the welding mechanism is used to weld the first busbar 2 and the second busbar 3; or, the welding mechanism is used to weld the signal acquisition terminal 5 and the first busbar 2. The welding mechanism, in conjunction with the aforementioned stacking equipment, can realize the welding of the first busbar 2 and the second busbar 3, as well as the welding of the signal acquisition terminal 5 and the first busbar 2. The welding of the busbars and terminals can be performed before stacking the batteries 1, and the batteries 1 can be stacked after the welding of the busbars and terminals is completed.

[0182] In one embodiment, the assembly line further includes a transfer mechanism for transferring the battery packs secured by cable ties 8 to a predetermined location for subsequent processing. The transfer mechanism can be an overhead crane or other aerial transfer mechanism. Alternatively, the transfer mechanism can be a conveyor line. The transfer mechanism can also be a robot.

[0183] An embodiment of the present invention also provides a method for assembling a battery pack, please refer to... Figure 15 The battery pack assembly method includes:

[0184] S101, provides a battery 1 with a busbar;

[0185] S103, stack multiple batteries 1, and make the first busbar 2 of an adjacent battery 1 and the second busbar 3 of another battery 1 fit together;

[0186] S105, Align each battery 1;

[0187] S107 clamps the aligned multiple batteries 1.

[0188] The battery pack assembly method of one embodiment of the present invention stacks individual batteries 1 having busbars, and makes the first busbar 2 and the second busbar 3 of two adjacent batteries 1 fit together. Subsequently, the multiple batteries 1 are aligned and clamped together to realize the stacking of individual batteries 1.

[0189] It should be noted that before stacking the batteries 1, busbars are already soldered onto the batteries 1. Therefore, when stacking multiple batteries 1, the busbars of each battery 1 must be located on the side of the battery 1. To ensure the connection between the busbars, the first busbar 2 and the second busbar 3 of adjacent batteries 1 must be correspondingly positioned, and the first busbar 2 and the second busbar 3 can be stacked. In some embodiments, direct docking of the first busbar 2 and the second busbar 3 is also possible. Interference with the busbars must be avoided during battery 1 alignment and clamping.

[0190] In one embodiment, the busbar of battery 1 is disposed on the stacking surface of battery 1, and the stacking surface of battery 1 is a surface perpendicular to the stacking direction of the battery pack.

[0191] The first busbar 2 of one adjacent battery 1 and the second busbar 3 of another battery 1 are attached together. The first busbar 2 and the second busbar 3 are used to represent the busbars of two different batteries 1.

[0192] In one embodiment, the battery pack assembly method further includes: pressing the first busbar 2 onto the second busbar 3; and welding the first busbar 2 and the second busbar 3 to achieve the connection between the first busbar 2 and the second busbar 3.

[0193] It should be noted that the first busbar 2 can be pressed against the second busbar 3 by using a stacked first welding clamping mechanism 140.

[0194] In one embodiment, the battery pack assembly method further includes: pressing the signal acquisition terminal 5 of the circuit board 4 to the first busbar 2; and soldering the signal acquisition terminal 5 and the first busbar 2 to achieve the connection between the signal acquisition terminal 5 and the first busbar 2.

[0195] It should be noted that the signal acquisition terminal 5 of the circuit board 4 can be pressed to the first busbar 2 by using the stacked second welding clamping mechanism 150.

[0196] In one embodiment, the battery pack assembly method further includes: using cable ties 8 to bundle each battery 1, thereby fixing multiple batteries 1.

[0197] In one embodiment, the cable tie 8 can directly bundle multiple batteries 1, that is, the cable tie 8 can be fixed to the outer casing of the battery 1. For example, the outer casings of the two outermost batteries 1 have relatively high strength, so they can withstand the bundling force of the cable tie 8.

[0198] In one embodiment, before directly bundling each battery 1 with cable ties 8, the two ends of the limiting member 160 are respectively connected to the outer casings of the two outermost batteries 1 to prevent deformation of the battery pack during the bundling process. That is, the limiting member 160 is directly connected to the battery casing.

[0199] In one embodiment, the cable tie 8 can indirectly bundle multiple batteries 1. Bundling each battery 1 with the cable tie 8 includes: bundling the housing 6 with the cable tie 8 to fix each battery 1 inside the housing 6, thereby preventing the battery 1 from detaching.

[0200] It should be noted that before using cable ties 8 to tighten the housing 6, the second welding clamping mechanism 150 can be moved to create clearance space on the side of the battery pack for placing the cable tie machine.

[0201] In one embodiment, the battery pack assembly method further includes: before using cable ties 8 to bind the housing 6, connecting the two ends of the limiting member 160 to the two opposite connecting portions 7 of the housing 6 respectively, thereby preventing the battery pack from deforming during the cable ties process.

[0202] It should be noted that the limiting member 160 can be a stacked limiting member 160, which is used to connect the two end plates of the housing 6. The housing 6 may also include two side covers, which are arranged opposite to each other, thereby reliably surrounding the multiple batteries 1 with the two end plates, and the cable ties 8 are wrapped around the two end plates and the two side covers to secure the multiple batteries 1.

[0203] In one embodiment, aligning the individual batteries 1 includes: using an alignment mechanism 130 to fit against the side of each battery 1, and causing the alignment mechanism 130 to avoid the busbar located on the side of the battery 1, that is, the alignment mechanism 130 is arranged opposite to the busbar of the battery 1.

[0204] It should be noted that the alignment of multiple batteries 1 can be achieved by moving the alignment mechanism 130, or by pushing the batteries 1 so that multiple batteries 1 come into contact with the alignment mechanism 130. The alignment mechanism 130, the first welding clamping mechanism 140, and the second welding clamping mechanism 150 can be located on the same side of the batteries 1. The alignment mechanism 130 can be the alignment mechanism 130 of a stacking device.

[0205] In one embodiment, stacking multiple batteries 1 includes: sequentially stacking the multiple batteries 1 on a base 100, with the stacking direction of the battery pack parallel to the base 100. The multiple batteries 1 are stacked on the base 100. During the stacking process, a robotic arm can be used to grasp the batteries 1, thereby ensuring that each battery 1 is sequentially stacked on the base 100. The stacking of the individual batteries 1 on the base 100 can be a horizontal stack. A horizontal stack can be understood as the stacking direction of the battery pack being parallel to the base 100. In this case, the base 100 can be parallel to a horizontal reference plane, or the base 100 can be tilted relative to a horizontal reference plane.

[0206] It should be noted that the first positioning mechanism 110 and the second positioning mechanism 120 of the stacking device can be used to press the multiple batteries 1 together.

[0207] In one embodiment, each battery 1 is placed on the positioning slider 101 of the base 100. When the first positioning mechanism 110 and the second positioning mechanism 120 are used to press the multiple batteries 1 together, the battery 1 drives the positioning slider 101 to move relative to the base 100 along the stacking direction of the battery pack, thereby ensuring that each battery 1 is reliably attached.

[0208] It should be noted that the positioning slider 101 can be the positioning slider 101 of the stacking device.

[0209] In one embodiment, stacking multiple batteries 1 includes: sequentially stacking the multiple batteries 1 on a base 100, with the stacking direction of the battery pack perpendicular to the base 100. The stacking of the individual batteries 1 on the base 100 can be vertical stacking, which can be understood as the stacking direction of the battery pack being perpendicular to the base 100. After the battery pack is stacked, a positioning structure can be used to press the battery pack together.

[0210] In one embodiment, the battery pack assembly method can be applied to the stacking setup described above.

[0211] An embodiment of the present invention also provides a battery pack, comprising a battery pack assembled by the battery pack assembly method described above.

[0212] The battery pack of one embodiment of the present invention is assembled using the above-described battery pack assembly method, and the battery pack assembly production line includes a stacking device. The battery pack assembly method stacks individual batteries 1 with busbars, and arranges the first busbar 2 and second busbar 3 of two adjacent batteries 1 in a corresponding manner. Subsequently, the multiple batteries 1 are aligned and clamped to achieve the stacking of individual batteries 1.

[0213] In one embodiment, the battery pack includes a plurality of batteries 1, each battery including a cell and an electrolyte, and is the smallest unit capable of performing electrochemical reactions such as charging / discharging. A cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. The polarities of the first and second electrodes can be interchanged.

[0214] The battery cell is a laminated battery cell, which has a first electrode layered on top of each other, a second electrode layer with the opposite electrical charge to the first electrode layer, and a separator layer disposed between the first electrode layer and the second electrode layer, so that multiple pairs of first electrode layers and second electrode layers are stacked to form a laminated battery cell.

[0215] The battery can be a wound battery, which is a battery cell obtained by winding a first electrode, a second electrode with the opposite electrical charge to the first electrode, and a separator between the first electrode and the second electrode.

[0216] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0217] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this disclosure is limited only by the appended claims.

Claims

1. A stacking device, characterized in that, For stacking multiple batteries (1) to form a battery pack, the stacking device includes: A base (100) is provided for placing the battery (1). The base (100) is provided with a positioning slider (101) for placing the battery (1). The positioning slider (101) is movably disposed relative to the base (100). A positioning mechanism, the positioning mechanism including a positioning surface, the positioning surface being used to fit against the stacking surface of the battery (1); Alignment mechanism (130), which is disposed on the base (100) and is used to fit against the side of each of the batteries (1) so that each of the batteries (1) is aligned; A substrate, which is detachably mounted on the base (100), is movably disposed along the stacking direction of the battery pack, and / or is movably disposed along a direction close to or away from the battery pack; A connector disposed on the substrate; A pressure block is disposed on the connector and has a clearance space for welding. The positioning mechanism is used to clamp the aligned battery (1).

2. The stacking device according to claim 1, characterized in that, The positioning mechanism includes: A first positioning mechanism (110) is disposed on the base (100), and the first positioning mechanism (110) includes a first positioning surface (111); A second positioning mechanism (120) is disposed on the base (100). The second positioning mechanism (120) includes a second positioning surface (121), and the first positioning surface (111) and the second positioning surface (121) are disposed opposite to each other. The first positioning mechanism (110) and the second positioning mechanism (120) are movably arranged to clamp the plurality of batteries (1) between the first positioning surface (111) and the second positioning surface (121).

3. The stacking device according to claim 2, characterized in that, There are multiple positioning sliders (101), and each battery (1) corresponds to at least one positioning slider (101) along a direction perpendicular to the stacking direction of the battery pack. Wherein, along the stacking direction of the battery pack, the length of the positioning slider (101) that is in contact with the battery (1) is not greater than the thickness of the battery (1).

4. The stacking device according to claim 1, characterized in that, The alignment mechanism (130) includes: A drive plate (131) is disposed on the base (100). The drive plate (131) includes a reference surface (1311) that extends along the stacking direction of the battery pack. At least two protrusions (132) are provided at intervals on the reference surface (1311) along the stacking direction of the battery pack for fitting against the side of the battery (1).

5. The stacking device according to claim 4, characterized in that, The protrusions (132) are provided in a one-to-one correspondence with the batteries (1); Wherein, along the stacking direction of the battery pack, the length of the protrusion (132) that is in contact with the side of the battery (1) is not greater than the thickness of the battery (1).

6. The stacking device according to claim 5, characterized in that, The protrusion (132) is movably disposed relative to the drive plate (131) along the stacking direction of the battery pack.

7. The stacking device according to claim 4, characterized in that, The alignment mechanism (130) further includes: A substrate, which is detachably mounted on the base (100), and a drive plate (131) disposed on the substrate.

8. The stacking device according to claim 1, characterized in that, The stacking device further includes a welding clamping mechanism disposed on the base (100), the welding clamping mechanism being used to press the first bus (2) to the second bus (3), and / or, the welding clamping mechanism being used to press the signal acquisition terminal (5) of the circuit board (4) to the first bus (2).

9. The stacking device according to claim 8, characterized in that, The base (100) is provided with a base plate (102), and the substrate is detachably mounted on the base plate (102); The base plate (102) is movably disposed relative to the base (100) along the stacking direction of the battery pack, and / or the base plate (102) is movably disposed relative to the base (100) in a direction close to or away from the battery pack.

10. The stacking device according to claim 8, characterized in that, There are multiple connectors and pressure blocks, with multiple connectors disposed on the substrate, and each connector is provided with a pressure block.

11. The stacking device according to any one of claims 8 to 10, characterized in that, The welding clamping mechanism includes: A first welding clamping mechanism (140) is used to press the first busbar (2) against the second busbar (3); The second welding clamping mechanism (150) is used to press the signal acquisition terminal (5) to the first busbar (2); The first welding clamping mechanism (140) and the second welding clamping mechanism (150) may be selectively mounted on the base (100).

12. The stacking device according to claim 1, characterized in that, The stacking device also includes: A limiting member (160) spans across a plurality of the batteries (1) of the battery pack, the limiting member (160) being used to connect two opposing connecting portions (7) of the housing (6) of the battery pack.

13. A battery pack assembly production line, characterized in that, The stacking device includes any one of claims 1 to 12.

14. The battery pack assembly production line according to claim 13, characterized in that, The assembly production line also includes: Welding mechanism; The welding mechanism is used to weld the busbar and terminal of the battery (1); or, the welding mechanism is used to weld the first busbar (2) and the second busbar (3); or, the welding mechanism is used to weld the signal acquisition terminal (5) and the first busbar (2).

15. A method for assembling a battery pack, characterized in that, The battery pack assembly method is applicable to the stacking device according to any one of claims 1 to 12, and the battery pack assembly method includes: A battery with a busbar is provided (1); Multiple batteries (1) are stacked such that the first busbar (2) of an adjacent battery (1) and the second busbar (3) of another battery (1) are fitted together; Align each of the batteries (1); Clamp the aligned batteries (1) together.

16. The battery pack assembly method according to claim 15, characterized in that, Also includes: Press the first busbar (2) against the second busbar (3); Weld the first busbar (2) and the second busbar (3).

17. The battery pack assembly method according to claim 16, characterized in that, Also includes: Press the signal acquisition terminal (5) of the circuit board (4) onto the first busbar (2); Weld the signal acquisition terminal (5) and the first busbar (2).

18. The battery pack assembly method according to claim 17, characterized in that, Also includes: Each of the batteries (1) is bundled together using cable ties (8).

19. The battery pack assembly method according to claim 18, characterized in that, Bundling each of the batteries (1) together using cable ties (8) includes: The housing (6) is secured with the cable ties (8) to fix each of the batteries (1) inside the housing (6).

20. The battery pack assembly method according to claim 19, characterized in that, Also includes: Before using the cable ties (8) to secure the housing (6), The two ends of the limiting member (160) are respectively connected to the two opposite connecting parts (7) of the housing (6).

21. The battery pack assembly method according to claim 15, characterized in that, Aligning the individual batteries (1) includes: The alignment mechanism (130) is used to fit against the side of each of the batteries (1), and the alignment mechanism (130) avoids the busbar located on the side of the battery (1).

22. The method for assembling a battery pack according to any one of claims 15 to 21, characterized in that, Stacking multiple of the batteries (1) includes: Multiple batteries (1) are stacked sequentially on a base (100), with the stacking direction of the battery pack parallel to the base (100).

23. The battery pack assembly method according to claim 22, characterized in that, Each of the batteries (1) is placed on the positioning slider (101) of the base (100); When the first positioning mechanism (110) and the second positioning mechanism (120) are used to press the multiple batteries (1), the batteries (1) drive the positioning slider (101) to move relative to the base (100) along the stacking direction of the battery pack.

24. The method for assembling a battery pack according to any one of claims 15 to 21, characterized in that, Stacking multiple of the batteries (1) includes: Multiple batteries (1) are stacked sequentially on a base (100), with the stacking direction of the battery pack perpendicular to the base (100).

25. A battery pack, characterized in that, This includes battery packs assembled using the assembly method of any one of claims 15 to 24.

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