Battery pressurizing device

Abstract

The invention relates to a battery pressurizing device, and the device comprises a bearing mechanism which is used for bearing a battery; and the pressurizing mechanism can move relative to the bearing mechanism, the pressurizing mechanism comprises a mounting part and a pressurizing part, the pressurizing part is arranged on the mounting part and can rotate relative to the mounting part, and the pressurizing part is used for abutting against the battery in the first direction so as to apply pressure to the battery. The battery pressurizing device can level the surface of the battery, and can prevent the battery cell from protruding and / or the battery terminal from being damaged when pressurizing in other directions.

Description

Battery pressurizing device Technical Field

[0001] The present application relates to the field of battery production, and more specifically to a battery pressurizing device. Background Art

[0002] During the production and assembly of power batteries for new energy vehicles, batteries must be assembled under specific pressure. Pressurizing the battery in one direction to achieve the required dimensions can cause undesirable surface deformation in other directions, making it difficult to achieve the desired flatness.

[0003] The prior art provides a universal module pressurizing device comprising a workbench, a pressurizing component, a pressure-transmitting component, and a pressure-receiving component. During operation, the pressurizing component applies pressure in one direction to a battery to be pressurized, positioned between the pressure-transmitting component and the pressure-receiving component, through the pressure-transmitting component, thereby compressing the battery in the one direction.

[0004] Summary of the Invention

[0005] One of the purposes of the embodiments of the present application is to provide a battery pressurizing device so as to alleviate the problem of poor pressing effect during the battery pressurizing process.

[0006] In order to solve the above technical problems, the technical solutions adopted in the embodiments of the present application are:

[0007] In a first aspect, a battery pressurizing device is provided, comprising: a supporting mechanism for supporting a battery; and a pressurizing mechanism movable relative to the supporting mechanism, wherein the pressurizing mechanism comprises a mounting member and a pressurizing member, the pressurizing member being arranged on the mounting member and rotatable relative to the mounting member, the pressurizing member being configured to abut the battery along a first direction to apply pressure to the battery.

[0008] The pressing member of the pressing mechanism is rotatable relative to the mounting member, so that the pressing member rolls along a first direction D1 against the battery and applies pressure to the battery. Thus, even if the battery surface to be leveled is uneven, the battery surface can be leveled while maintaining a consistent pressure without damaging the battery surface.

[0009] In some embodiments of the present application, the pressure member includes at least one roller, and a rotation plane of the roller is parallel to an abutment direction of the pressure member against the battery.

[0010] The rotation plane is parallel to the abutment direction, so that the contact between the pressure piece and the battery can be line abutment or even point abutment. The friction generated between the pressure piece and the battery is rolling friction, which can better accommodate different protrusions of the battery surface and reduce the risk of battery damage.

[0011] In some embodiments of the present application, the outer peripheral surface of the roller is at least partially arc-shaped.

[0012] At least a portion of the outer circumference of the roller is arc-shaped, which helps to achieve line contact or even point contact between the roller and the battery.

[0013] In some embodiments of the present application, the surface of the pressurizing member is made of elastic insulating material.

[0014] The elasticity of the elastic insulating material can prevent damage to the battery, and the insulation can prevent the battery from conducting electricity.

[0015] In some embodiments of the present application, the pressurizing mechanism includes a pressurizing assembly, which includes a plurality of pressurizing members arranged side by side along a second direction, and the pressurizing assembly is mounted on the mounting member, and the second direction is perpendicular to the first direction.

[0016] The side-by-side arrangement of multiple pressure members along the second direction facilitates the formation of multiple spaced-apart line contact segments on the entire surface of the battery to be leveled, at least in the second direction, thereby better compatibility with different protrusion degrees of the battery surface and reducing the risk of battery damage.

[0017] In some embodiments of the present application, the pressurizing mechanism includes a plurality of pressurizing components spaced apart along a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0018] The pressurizing assembly constructed in this way facilitates the formation of more line contact segments spaced apart in both the second direction and the third direction, can better accommodate different protrusion degrees of the battery surface and reduce the risk of battery damage.

[0019] In some embodiments of the present application, two adjacent pressurizing members in the pressurizing assembly are staggered along a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0020] The line contact segments formed by the pressure members in the pressure assembly abutting against the battery are arranged more closely in the second direction and are discontinuous in the third direction, that is, multiple more densely staggered line contact segments are formed in the third direction, which can better accommodate the different protrusions of the battery surface and reduce the risk of battery damage.

[0021] In some embodiments of the present application, projections of two adjacent pressure members along the third direction at least partially overlap.

[0022] The pressurizing assembly constructed in this way can form a plurality of line contact segments that are more densely packed in the second direction, can better accommodate different protrusions of the battery surface, and can reduce the risk of battery damage.

[0023] In some embodiments of the present application, the mounting member includes a first mounting sub-member and multiple second mounting sub-members, the multiple second mounting sub-members are installed on one side of the first mounting sub-member along the first direction, and the pressure member is rotatably connected to the second mounting sub-member.

[0024] The mounting member thus constructed provides, in a simple manner, a plurality of pressing members that rotatably abut against the battery.

[0025] In some embodiments of the present application, the pressurizing mechanism further includes an elastic member, and the elastic member is disposed between the first mounting sub-member and the second mounting sub-member.

[0026] The arrangement of the elastic members allows them to be compatible with battery surfaces with varying degrees of protrusion. For example, with battery terminals having different heights, the independent arrangement of the elastic members allows each elastic member to be compressed to a different degree when all battery terminals are pressed simultaneously, maintaining consistent pressure and ensuring the flatness of the electrode terminals.

[0027] In some embodiments of the present application, the pressurizing mechanism further includes a connecting rod, which is used to connect the first mounting sub-component and the second mounting sub-component, and the elastic member is sleeved on the connecting rod.

[0028] The individual elastic members are arranged in a simple manner so that the pressure members are independently compatible with battery surfaces having different protrusions.

[0029] In some embodiments of the present application, the second mounting sub-component is connected to a plurality of the pressurizing components.

[0030] The second mounting sub-assembly is connected with a plurality of pressurizing members, which can provide more dense and shortened line contact segments in the second and third directions in a simple manner.

[0031] In some embodiments of the present application, the second mounting sub-component includes a main body and at least one pair of lugs extending from the main body along a first direction, each pair of lugs is spaced apart and arranged in parallel along a second direction, so that each pressure member is rotatably mounted to each pair of lugs by means of a pivot member.

[0032] The second mounting sub-component constructed in this way enables the multiple pressurizing members to provide more compact and shortened line contact segments in the second and third directions, thereby better adapting to different protrusions of the battery surface and reducing the risk of battery damage.

[0033] In some embodiments of the present application, the spacing between the plurality of pressurizing assemblies in the third direction is adjustable, and is adjusted by a distance-changing mechanism connected to the first mounting member.

[0034] The setting of the variable distance mechanism makes the spacing of multiple pressurizing components in the third direction flexibly adjustable to be compatible with batteries of different widths and achieve rapid model change.

[0035] In some embodiments of the present application, the pitch changing mechanism includes a bidirectional adjustment screw.

[0036] The provision of the bidirectional adjustment screw provides linear movement of at least one of the plurality of first mounting members relative to each other, thereby facilitating adjustment of the spacing of the plurality of pressurizing assemblies in the third direction.

[0037] In some embodiments of the present application, the battery pressurizing device further includes a fixing member, and the plurality of first mounting sub-members are slidably connected to the fixing member along the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0038] The sliding connection between the fixing member and the first mounting sub-member along the third direction facilitates providing sufficient support and smooth sliding, and facilitates the distance changing mechanism to more smoothly adjust the spacing of the multiple pressurizing components in the third direction.

[0039] In some embodiments of the present application, the battery pressurizing device further includes a driving mechanism and a limiting member, wherein the driving mechanism is used to drive the pressurizing mechanism to move along the first direction, and the limiting member is used to limit the stroke of the driving mechanism.

[0040] The distance of the limiting member relative to the reference plane corresponds to the stroke of the driving mechanism. When the limiting member reaches the reference plane, the driving mechanism reaches the stroke and stops driving, thereby applying a predetermined amount of pressure to the battery.

[0041] In some embodiments of the present application, the battery pressurizing device further includes a sensor, and the sensor is used to detect whether the driving mechanism reaches the stroke.

[0042] The sensor monitors the stroke of the driving mechanism in real time to ensure that the driving of the driving mechanism is stopped once the driving mechanism reaches the stroke, so that the battery obtains a desired predetermined amount of pressure.

[0043] In some embodiments of the present application, the battery pressurizing device further includes a motion buffer, which is used to buffer the movement of the limiting member when the driving mechanism reaches a stroke.

[0044] The motion buffer buffers the movement of the limiting member along the first direction, thereby buffering the movement of the pressing member driven by the driving mechanism to prevent the impact caused by the movement from damaging the battery surface.

[0045] In some embodiments of the present application, the battery pressurizing device further includes a shaping mechanism, wherein the shaping mechanism is used to apply pressure to the battery, and the direction in which the shaping mechanism pressurizes the battery is perpendicular to the first direction.

[0046] Thus, the battery pressurizing device can pressurize the battery in at least two directions to obtain a flat battery with a good pressing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] These and various other advantages and benefits of the present application will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0048] FIG1 schematically illustrates a perspective view of a battery pressurizing device according to one or more embodiments;

[0049] FIG2 schematically shows a front view of the battery pressurizing device shown in FIG1 ;

[0050] FIG3 schematically shows a side view of the battery pressurizing device shown in FIG1 ;

[0051] FIG4 schematically shows a bottom perspective view of the battery pressurizing device shown in FIG1 ;

[0052] FIG5A schematically illustrates a perspective view of the battery pressurizing device shown in FIG1 in a rest position during operation;

[0053] FIG5B schematically illustrates a perspective view of the battery pressurizing device shown in FIG1 in an abutting pressurizing position during operation;

[0054] FIG6 schematically shows a perspective view of the layout of the pressurizing assembly of the first example;

[0055] FIG7 schematically shows a perspective view of the layout of a pressurizing assembly of a second example;

[0056] 8A and 8B schematically illustrate an assembled perspective view and an exploded perspective view of a pressurizing assembly of a second example; and

[0057] FIG. 9 schematically shows a perspective view of a disassembled portion of the battery pressurizing device shown in FIG. 1 .

[0058] The reference numerals in the specific embodiment are as follows:

[0059] 1000 battery pressurizing device; 10 pressurizing mechanism; 200 first shaping mechanism; 300 second shaping mechanism; 400 battery; 500 carrying mechanism;

[0060] 110 mounting member; 112 first mounting member; 114 second mounting member; 1141 main body; 1142 lug; 1143 pivot member; 1144 washer;

[0061] 120 pressurizing member; 1200 pressurizing assembly; 130 elastic member; 140 connecting rod; 1401 sleeve; 160 fixing member; 170 slider;

[0062] 30 driving mechanism; 32 fixed first driving member; 34 movable second driving member; 36 sensor; 40 pitch changing mechanism; 42 bidirectional adjustment screw; 50 fixed mounting member; 70 movable mounting member; 80 limiting member; 82 top member; 90 motion buffer;

[0063] D1 is the first direction; D2 is the second direction; D3 is the third direction. DETAILED DESCRIPTION

[0064] The following embodiments of the technical solution of the present application are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0066] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0067] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0068] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0069] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), and similarly, "multiple groups" refers to more than two (including two) groups.

[0070] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0071] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0072] The battery described herein is a battery module comprising a plurality of battery cells arranged in a longitudinal direction, each battery cell having two battery terminals. However, it should be understood that the battery described herein is not limited to a battery module, but may include battery cells or battery packs. Therefore, the battery pressurizing device described herein is not limited to pressurizing battery modules, but may also be used to pressurize battery cells or battery packs.

[0073] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0074] The assembly of power batteries requires pressurized cells. Currently, various module pressurization devices are designed specifically for different battery types. While these devices can meet production requirements, they require significant capital investment and a large number of corresponding fixtures at the production site. The pressurization device also requires replacing parts for different battery models, resulting in high conversion costs.

[0075] If the pressing member of the pressurizing mechanism has a flat surface that contacts the battery, then during flattening, because the protrusions of the battery surface vary, it is impossible to maintain a consistent pressure across the entire battery surface, and the flatness of the battery cannot be guaranteed. Furthermore, because the flat surface and the battery surface are in surface contact, the friction generated by applying pressure to the battery in at least one direction is sliding friction, which increases the risk of battery damage compared to rolling friction.

[0076] In order to solve the above problems, the present application envisions designing the pressurizing mechanism to include a rotatable pressurizing member so that the pressurizing member can roll against the battery and apply pressure to the battery. In this way, the abutment between the pressurizing member and the battery will be transformed from surface contact to line contact and even point contact. In other words, the surface contact can be transformed into more dispersed line contact segments. In this article, the line contact segment refers to the abutment between the pressurizing member and the battery being a segmented line contact. The large number of line contact segments, the staggered and dispersed arrangement and the short segment length can better accommodate the different protrusions of the battery surface. In addition, the friction between the pressurizing member and the battery will be transformed from sliding friction to rolling friction, thereby reducing the risk of battery damage.

[0077] The battery pressurizing device disclosed in the embodiments of the present application can pressurize any surface of the battery to be flattened, so as to adjust the unevenness without damaging the battery.

[0078] For the convenience of description, the following embodiments are described by taking the battery pressurizing device 1000 according to one or more embodiments of the present application to smooth the surface of a battery terminal as an example.

[0079] 1 to 4 , which schematically illustrate a perspective view, a front view, a side view, and a bottom perspective view of a battery pressurizing device according to one or more embodiments of the present application. FIG5A and FIG5B schematically illustrate perspective views of the battery pressurizing device shown in FIG1 in a rest position and an abutting pressurizing position, respectively, during operation in one or more exemplary applications. FIG5A and FIG5B merely schematically illustrate the possible presence of the first shaping mechanism 200 and / or the second shaping mechanism 300 during operation, and do not necessarily imply their presence.

[0080] According to one or more embodiments, referring to FIG. 1 through FIG. 5B , the battery pressurizing device 1000 includes a supporting mechanism 500 for supporting a battery 400 and a pressurizing mechanism 10 movable relative to the supporting mechanism 500. The pressurizing mechanism 10 includes a mounting member 110 and a pressurizing member 120. The pressurizing member 120 is disposed on the mounting member 110 and is rotatable relative to the mounting member. The pressurizing member 120 is configured to abut the battery 400 along a first direction D1 to apply pressure to the battery.

[0081] In Figures 1 to 5B , the first direction is the direction indicated by arrow D1, and the second direction is the direction indicated by arrow D2. Battery 400 refers to a battery module comprising two rows of multiple battery cells arranged along second direction D2. Each battery cell has two battery terminals, with the anode terminals of one row of battery cells facing upward, and the cathode terminals of the other row of battery cells facing upward. The support mechanism 500 refers to any structure that can be used to support battery 400, such as a platform or a bracket. The pressurizing mechanism 10 refers to a mechanism used to abut and pressurize battery 400. Herein, the first direction D1 refers to the direction in which the pressurizing mechanism 10 moves toward battery 400 to abut against it, as indicated by arrow D1. In other words, the first direction D1 refers to a direction perpendicular to and toward the surface of the battery to be flattened. Hereinafter, the surface of the battery to be flattened refers to the entire surface of the battery that is abutted and pressurized by the pressurizing member 120. As schematically illustrated in Figures 5A and 5B , the surface of the battery to be flattened is exemplified by the surface of the battery where the electrode terminals are located.

[0082] The pressurizing member 120 of the pressurizing mechanism 10 is rotatable relative to the mounting member 110, so that the pressurizing member 120 rolls along the first direction D1 against the battery 400 and applies pressure to the battery 400. Thus, even if the battery surface to be leveled is uneven, the battery surface can be leveled while maintaining a consistent pressure without damaging the battery surface (e.g., the electrode terminals).

[0083] According to one or more embodiments, the pressurizing member 120 includes at least one roller, and a rotation plane of the roller is parallel to a contact direction of the pressurizing member 120 against the battery 400 .

[0084] A roller is a component capable of at least partial rotational movement about its axis. In this context, the roller's rotational plane is defined by the first direction D1 and the third direction D3. The abutment direction of the pressure member against the battery refers to the direction along which the roller abuts the battery, i.e., the first direction D1. Therefore, the rotational plane and the abutment direction are parallel.

[0085] The rotation plane is parallel to the abutment direction, so that the pressure piece 120 can roll and abut against the battery 400, so that the contact between the two is line abutment or even point abutment. The friction generated between the pressure piece and the battery is rolling friction, which can better accommodate different protrusions of the battery surface and reduce the risk of battery damage.

[0086] According to one or more embodiments, the outer circumference of the roller is at least partially arc-shaped.

[0087] The outer circumference of the roller can be a complete arc or a portion of an arc. Alternatively, the outer circumference of the roller can be any arc that can achieve line contact with the battery.

[0088] The outer peripheral surface of the roller is at least partially arc-shaped, which helps to achieve line contact or even point contact between the roller and the battery. The friction generated between the pressure member and the battery is rolling friction, which can better accommodate different protrusions of the battery surface and reduce the risk of battery damage.

[0089] According to one or more embodiments, the surface of the pressurizing member 120 is made of elastic insulating material.

[0090] The pressure member 120 can be entirely made of an elastic insulating material. Alternatively, the outer periphery of the pressure member 120 can be coated with an elastic insulating material. The elastic insulating material can be a non-metallic material with a Shore hardness of 65-80, suitable for achieving linear contact between the pressure member and the battery. Alternatively, the elastic insulating material can be a non-metallic material with a Shore hardness of 70.

[0091] The elasticity of the elastic insulating material can prevent damage to the battery, and the insulation can prevent the battery from conducting electricity.

[0092] According to one or more embodiments, the pressurizing mechanism 10 includes a pressurizing assembly 1200 , which includes a plurality of pressurizing members 120 arranged side by side along a second direction D2 . The pressurizing assembly 120 is mounted on the mounting member 110 , and the second direction D2 is perpendicular to the first direction D1 .

[0093] 6 and 7 , a plurality of pressurizing members 120 are arranged side by side along the second direction D2 to form a pressurizing assembly 1200 , and the pressurizing assembly is mounted on the mounting member 110 .

[0094] In the first example shown in FIG. 6 , the side-by-side arrangement of the plurality of pressurizing members 120 facilitates forming a plurality of long, spaced-apart line contact segments on the entire surface to be leveled of the battery, at least in the second direction D2 .

[0095] In the second example shown in FIG. 7 , the side-by-side arrangement of the plurality of pressurizing members 120 facilitates forming more short-length, spaced-apart line contact segments on the entire surface to be leveled of the battery, at least in the second direction D2 .

[0096] Therefore, the side-by-side arrangement of multiple pressure members 120 along the second direction D2 facilitates the formation of multiple spaced-apart line contact segments on the entire surface of the battery to be leveled, at least in the second direction D2, thereby better compatibility with different protrusion degrees of the battery surface and reducing the risk of battery damage.

[0097] According to one or more embodiments, the pressurizing mechanism 10 includes a plurality of pressurizing assemblies 1200 spaced apart along a third direction D3 , where the third direction D3 is perpendicular to the first direction D1 and the second direction D2 .

[0098] The third direction D3 refers to a direction perpendicular to the first direction D1 and the second direction D2 , and is a direction indicated by an arrow D3 in the drawings.

[0099] As schematically shown in FIG. 7 , the plurality of pressurizing assemblies spaced apart along the third direction D3 may be two pressurizing assemblies 1200 , wherein each pressurizing assembly 1200 includes a plurality of pressurizing members 120 arranged side by side along the second direction D2 .

[0100] The pressurizing assembly 1200 thus constructed facilitates forming a plurality of spaced-apart line contact segments along the second direction D2 across the entire surface to be leveled, and the line contact segments are also spaced apart along the third direction D3. Thus, the plurality of spaced-apart line contact segments along both the second direction D2 and the third direction D3 can better accommodate varying degrees of protrusion on the battery surface and reduce the risk of battery damage.

[0101] According to one or more embodiments, two adjacent pressurizing members 120 in the pressurizing assembly are staggered along a third direction D3 , and the third direction D3 is perpendicular to the first direction D1 and the second direction D2 .

[0102] Two adjacent pressurizing members 120 in the pressurizing assembly are staggered along the third direction D3, which may mean that any two pressurizing members 120 as shown in FIG. 7 are not spaced apart from each other in the third direction indicated by the arrow D3, but are staggered to at least partially overlap.

[0103] As a result, the line contact segments formed by the pressure members 120 in the pressure assembly abutting against the battery are arranged more closely in the second direction D2, and are discontinuous in the third direction D3, that is, a plurality of more densely staggered line contact segments are formed in the third direction D3, which can better accommodate the different protrusions of the battery surface and reduce the risk of battery damage.

[0104] According to one or more embodiments, projections of two adjacent pressurizing members 120 along the third direction D3 at least partially overlap.

[0105] The projections of the two pressurizing members 120 along the third direction D3 at least partially overlap, which means that the projections formed by the outer circumferential surfaces of the two pressurizing members projected along the third direction D3 at least partially overlap.

[0106] The pressurizing assembly constructed in this way can form a plurality of line contact segments that are more densely packed in the second direction D2, which can better accommodate different protrusions of the battery surface and reduce the risk of battery damage.

[0107] According to one or more embodiments, the mounting member 110 includes a first mounting sub-member 112 and multiple second mounting sub-members 114 , multiple second mounting sub-members 114 are installed on one side of the first mounting sub-member 112 along the first direction D1 , and the pressure member 120 is rotatably connected to the second mounting sub-member 114 .

[0108] 6 and 7 , a plurality of second mounting sub-components 114 are connected to the first mounting sub-component 112 along the first direction D1 , so that the pressurizing member 120 rotatably connected to the second mounting sub-component 114 can rotate.

[0109] The thus constructed mounting member 110 provides, in a simple manner, a plurality of pressing members 120 that rotatably abut against the battery 400 .

[0110] According to one or more embodiments, the pressurizing mechanism 10 further includes an elastic member 130 , and the elastic member 130 is disposed between the first mounting sub-member 112 and the second mounting sub-member 114 .

[0111] 7 , elastic members 130 are disposed between the first mounting member 112 and the second mounting member 114. One end of each elastic member 130 abuts the first mounting member 112, while the other end abuts the second mounting member 114. The elastic members 130 may be spring members. The elastic modulus of the elastic members is selected so that they can be compressed by approximately 3 mm during operation.

[0112] The setting of the elastic member 130 can make it compatible with battery surfaces with different degrees of protrusion. Taking battery terminals with height differences as an example, the elastic members 130 are set independently of each other, so that when all battery terminals are pressurized at the same time, each elastic member 130 adapts to the corresponding battery terminal height and is compressed with different compression amounts, which can maintain consistent pressurization pressure and ensure that the electrode terminals are flat.

[0113] According to one or more embodiments, the pressurizing mechanism 10 further includes a connecting rod 140 , wherein the connecting rod 140 is used to connect the first mounting sub-component 112 and the second mounting sub-component 114 , and the elastic member 130 is sleeved on the connecting rod 140 .

[0114] 7 and 8A-8B , a connecting rod 140 can connect the first mounting sub-assembly 112 and the second mounting sub-assembly 124. The connection can be a threaded connection. Optionally, the connecting rod 140 can also be provided with a slidable sleeve 1401.

[0115] Thus, a separate elastic member is provided in a simple manner so that each pressurizing member 120 is independently compatible with battery surfaces having different protrusions, for example, battery terminals having height differences.

[0116] According to one or more embodiments, a plurality of pressurizing members 120 are connected to the second mounting sub-component 114 .

[0117] 7 and 8A-8B , each second mounting subassembly 114 may be connected to two pressurizing members 120 . The second mounting subassembly 114 may also be connected to more than two pressurizing members 120 as needed.

[0118] The second mounting sub-component 114 is connected with a plurality of pressurizing members, which can provide more, closer and shorter line contact segments in the second direction D2 and the third direction D3 in a simple manner.

[0119] According to one or more embodiments, the second mounting sub-component 114 includes a main body 1141 and at least one pair of lugs 1142 extending from the main body along the first direction D1, each pair of lugs is spaced apart and arranged in parallel along the second direction D2, so that each pressure member 120 is rotatably mounted to each pair of lugs by means of a pivot member 1143.

[0120] The pivoting member 1143 is a member that enables the pressurizing member 120 to rotate around it, and may be a rod-shaped member such as a pin. The lug 1142 is a member that protrudes from the main body 1141 along the first direction D1 and is provided with a mounting hole for attachment.

[0121] 6 , a pair of lugs 1142 extend from the main body 1141. Each pair of lugs is parallel to the second direction D2 and spaced apart from each other, so that each pressure member 120 is rotatably mounted within the lugs. The pressure member 120 shown in FIG6 has rotating portions at both ends that can rotate within the mounting holes of the lugs 1142.

[0122] 7 to 8B , two pairs of lugs 1142 extend from the main body 1141. Each pair of lugs is arranged parallel to and spaced apart from each other in the second direction D2, so that each pressure member 120 can be rotatably mounted to a corresponding pair of lugs 1142 via a pivot member 1143. Optionally, a pair of washers 119 may be disposed on opposite sides of the pressure member 120. The provision of the washers can reduce wear on the pressure member 120. The two pairs of lugs are staggered in both the second direction D2 and the third direction D3, allowing the two pressure members 120 to provide a closer, more shortened line contact segments in both the second direction D2 and the third direction D3.

[0123] The second mounting sub-component constructed in this way enables the multiple pressurizing members to provide more compact and shortened line contact segments in the second direction D2 and the third direction D3, thereby better adapting to different protrusions of the battery surface and reducing the risk of battery damage.

[0124] According to one or more embodiments, the spacing between the plurality of pressurizing assemblies 1200 in the third direction D3 is adjustable, which is adjusted by a distance-changing mechanism 40 connected to the first mounting member 112 .

[0125] 9 , the distance-changing mechanism 40 is connected to the two first mounting members 112 and can adjust the distance between the two pressurizing assemblies 1200 in the third direction D3. The distance-changing mechanism 40 can be a servo distance-changing mechanism.

[0126] The provision of the variable distance mechanism 40 enables the spacing of the plurality of pressurizing assemblies 1200 in the third direction D3 to be flexibly adjustable, so as to be compatible with batteries of different widths and achieve rapid model change.

[0127] According to one or more embodiments, the pitch changing mechanism 40 includes a bidirectional adjustment screw 42 .

[0128] Referring to Figure 9 , the bidirectional adjustment screw 42 of the pitch-changing mechanism can adjust the pitch by moving at least one of the two first mounting members 112. The bidirectional adjustment screw 42 is a component that converts the rotational motion provided by the pitch-changing mechanism into linear motion. The linear movement of the bidirectional adjustment screw 42 drives the linear movement of at least one of the two first mounting members 112 relative to each other, for example, moving them away from or toward each other.

[0129] The provision of the bidirectional adjustment screw 42 provides linear movement of at least one of the plurality of first mounting members 112 relative to each other, thereby facilitating adjustment of the spacing between the plurality of pressurizing assemblies 1200 in the third direction D3.

[0130] According to one or more embodiments, the battery pressurizing device further includes a fixing member 160 , and the plurality of first mounting sub-members 112 are slidably connected to the fixing member 160 along the third direction D3 , wherein the third direction D3 is perpendicular to the first direction D1 and the second direction D2 .

[0131] Referring to Figures 4 and 9 , the fixing member 160 can be in the form of a slide rail. The fixing member 160 can include at least two slide rails spaced apart along the second direction D2. The first mounting sub-assembly 112 can be connected to the slide rails via a slider 170. Figure 9 shows four slide rails, but the number of slide rails is not limited to this. The spacing between adjacent slide rails can be 250-300 mm to provide sufficient support and smooth sliding.

[0132] The sliding connection between the fixing member 160 and the first mounting sub-member 112 along the third direction D3 facilitates providing sufficient support and smooth sliding, and facilitates the distance changing mechanism to more smoothly adjust the spacing of the multiple pressurizing assemblies 1200 in the third direction D3.

[0133] According to one or more embodiments, the battery pressurizing device further includes a driving mechanism 30 and a limiting member 80 . The driving mechanism 30 is used to drive the pressurizing mechanism 10 to move along the first direction D1 , and the limiting member 80 is used to limit the stroke of the driving mechanism 30 .

[0134] 1 to 5B , the battery pressurizing device includes a drive mechanism 30. The drive mechanism 30 is configured to drive the pressurizing mechanism 10 to move between a resting position and an abutting and pressurizing position during pressurization of the battery 400. In the resting position (see FIG. 5A ), the pressurizing member 120 is spaced apart from the battery 400. In the abutting and pressurizing position (see FIG. 5B ), the pressurizing member 120 abuts and pressurizes the battery 400. The limiter 80 is configured to limit the travel of the drive mechanism 30.

[0135] In the example shown in FIG1 , the drive mechanism 30 includes a fixed first drive member 32 and a movable second drive member 34. The first drive member 32 is mounted on the fixed mounting member 50, and the second drive member 34 is fixed to the movable mounting member 70. The battery pressurizing device may further include a pair of guide assemblies arranged relative to each other along the second direction D2. Each guide assembly includes: two parallel guide members and a top member 82 connecting the two guide members. The two guide members are fixed to the upper surface of the movable mounting member 70 and slide through an upper guide sleeve fixed to the upper surface of the fixed mounting member 50 and a lower guide sleeve fixed to the lower surface of the fixed mounting member 50, respectively, to provide a guiding function.

[0136] The stopper 80 is connected to the top member 82, and its extension relative to the top member 82 in the first direction D1 is adjustable so that the distance of the stopper 80 from the reference surface corresponds to the stroke of the drive mechanism 30. The reference surface can be the upper surface of the fixed mounting member 50. Alternatively, the reference surface can be the upper surface of a reference block 88 mounted on the upper surface of the fixed mounting member 50. Driven by the drive mechanism 30, the stopper 80 can move along the first direction D1 following the guide assembly.

[0137] In practice, the predetermined pressure values ​​to be applied to the battery 400 vary for different battery models. Based on the predetermined pressure value for the battery and relevant parameters such as the elastic modulus and compression of the elastic member 130, the required stroke of the drive mechanism 30 can be calculated. The distance of the stopper 80 relative to the reference plane is then adjusted to correspond to the stroke of the drive mechanism 30. Thus, when the stopper reaches the reference plane, the drive mechanism 30 reaches its stroke and stops, thereby applying the predetermined pressure to the battery.

[0138] The predetermined pressure of the battery refers to the predetermined pressure to be applied to the battery 400 for different types of batteries. The limiter 80 limits the stroke of the driving mechanism 30 so that the pressurizing mechanism 10 provides the predetermined pressure for different types of batteries 400.

[0139] According to one or more embodiments, the battery pressurizing device further includes a sensor 36 , which is configured to detect whether the driving mechanism 30 has reached a stroke.

[0140] 2 , the sensor 36 may be a position sensor mounted on the upper surface of the movable mounting member 70 for detecting whether the driving mechanism 30 has reached its stroke. Once the sensor 36 detects that the driving mechanism 30 has reached its stroke, the driving mechanism stops driving.

[0141] The sensor 36 monitors the stroke of the driving mechanism in real time to ensure that the driving of the driving mechanism is stopped once the driving mechanism reaches the stroke, thereby allowing the battery to obtain a desired predetermined amount of pressure.

[0142] In one or more embodiments, the battery pressurizing device further includes a motion buffer 90 , and the motion buffer 90 is used to buffer the movement of the limit member 80 when the driving mechanism 30 reaches a stroke.

[0143] In the example shown in Figures 1 to 4, the battery pressurizing device also includes a motion buffer 90, which is mounted on the top member 82 and is arranged adjacent to the limit member 80. The motion buffer 90 extends in the first direction D1 relative to the top member 82. The motion buffer 90 may include a buffer portion. When the driving mechanism reaches the stroke, the buffer portion of the motion buffer 90 abuts against the reference block 88 mounted on the upper surface of the fixed mounting member 50 to buffer the movement of the limit member 80 along the first direction D1. The reference block 88 may have the ability to buffer movement, such as being elastic. The reference block 88 mounted on the upper surface of the fixed mounting member 50 provides a reference surface for the limit member 80 on the one hand, and provides a buffering member for the motion buffer 90 on the other hand. When the reference block 88 fails, it can be convenient to replace it with a new reference block.

[0144] The motion buffer 90 buffers the movement of the stopper 80 along the first direction D1 , thereby buffering the movement of the pressing member 10 driven by the driving mechanism 30 , so as to prevent the impact caused by the movement from damaging the battery surface.

[0145] In one or more embodiments, the battery pressurizing device further includes a shaping mechanism, wherein the shaping mechanism is configured to apply pressure to the battery 400 , and the direction in which the shaping mechanism pressurizes the battery is perpendicular to the first direction D1 .

[0146] 5A and 5B , the shaping mechanism may include a first shaping mechanism 200 and a second shaping mechanism 300. The first shaping mechanism 200 may apply pressure to the battery 400 along a second direction D2. The second shaping mechanism 300 may apply pressure to the battery 400 along a third direction D3. The first shaping mechanism 200 and / or the second shaping mechanism 300 may be combined with the pressurizing mechanism 10 to apply pressure to the battery 400.

[0147] Thus, the battery pressurizing device can pressurize the battery in at least two directions to obtain a flat battery with a good pressing effect.

[0148] According to some embodiments of the present application, a battery pressurizing device includes: a supporting mechanism 500 for supporting a battery 400; and a pressurizing mechanism 10 movable relative to the supporting mechanism 500. The pressurizing mechanism includes a mounting member 110 and a pressurizing member 120. The pressurizing member is disposed on the mounting member 110 and is rotatable relative to the mounting member. The pressurizing member 120 is configured to abut the battery 400 along a first direction D1 to apply pressure to the battery. A plurality of pressurizing members 120 arranged side by side along a second direction D2 constitute a pressurizing assembly 1200. The mounting member 110 includes a first mounting sub-member 112 and a plurality of second mounting sub-members 114. An elastic member 130 is disposed between the first mounting sub-member 112 and the second mounting sub-member 114. The battery pressurizing device may also include: a variable distance mechanism 40 for adjusting the spacing between multiple pressurizing assemblies 1200 in the third direction D3; a fixing member 160 for providing support and sliding for the pressurizing mechanism 10; a driving mechanism 30 for driving the pressurizing mechanism 10 to move along the first direction D1; a limit member 80 for limiting the stroke of the driving mechanism 30; a sensor 36 for monitoring the stroke of the driving mechanism 30 in real time; and a motion buffer 90 for buffering the movement of the limit member 80 along the first direction D1.

[0149] When using the battery pressurizing device 1000 to pressurize a battery, the required stroke of the driving mechanism 30 can be calculated based on the predetermined pressure values ​​required for different battery models and relevant parameters such as the elastic modulus and compression of the elastic member 130. The stroke of the driving mechanism 30 is determined by adjusting the distance of the limit member 80 along the first direction D1 relative to the reference plane provided by the reference block 88. The driving mechanism 30 drives the pressurizing mechanism 10 to move along the first direction D1, allowing the pressurizing member 120 to abut the battery 400 and apply pressure thereto. When the sensor 36 detects that the driving mechanism 30 has reached its stroke, the limit member 80 reaches the reference plane 88, and the driving mechanism 30 stops. At this point, the pressurizing member 120 of the pressurizing mechanism 10 has applied the predetermined amount of pressure to the battery 400. The motion buffer 90 cushions the movement of the limit member 80 along the first direction D1, preventing the impact caused by the movement from damaging the battery surface. The elastic member 130 automatically adjusts its expansion and contraction to adapt to the different protrusions of the battery surface, thereby maintaining a consistent pressure when the entire battery surface is pressurized at the same time, and ensuring that the battery is flattened without being damaged.

[0150] To accommodate modules of varying widths and enable rapid format changeover, the spacing between the multiple pressurizing assemblies 1200 in the third direction D3 can be adjusted using the variable distance mechanism 40. Alternatively, the pressurizing mechanism 10 can be used to pressurize the battery 400 in at least one other direction simultaneously or subsequently to obtain a flatter battery with better compression.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery pressurizing device, comprising: A carrying mechanism, used for carrying a battery; A pressing mechanism is movable relative to the supporting mechanism, Wherein, the pressurizing mechanism comprises a mounting member and a pressurizing member, wherein the pressurizing member is disposed on the mounting member and is rotatable relative to the mounting member, and the pressurizing member is used to abut against the battery along a first direction to apply pressure to the battery.

2. The battery pressurizing device according to claim 1, wherein: The pressure member includes at least one roller, and a rotation plane of the roller is parallel to a contact direction of the pressure member against the battery.

3. The battery pressurizing device according to claim 2, wherein: The outer peripheral surface of the roller is at least partially arc-shaped.

4. The battery pressurizing device according to any one of claims 1 to 3, wherein: The surface of the pressurizing member is made of elastic insulating material.

5. The battery pressurizing device according to any one of claims 1 to 4, wherein: The pressurizing mechanism includes a pressurizing assembly, which includes a plurality of pressurizing members arranged side by side along a second direction. The pressurizing assembly is mounted on the mounting member, and the second direction is perpendicular to the first direction.

6. The battery pressurizing device according to claim 5, wherein: The pressurizing mechanism includes a plurality of pressurizing components spaced apart along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

7. The battery pressurizing device according to claim 6, wherein: Two adjacent pressurizing members in the pressurizing assembly are staggered along a third direction, and the third direction is perpendicular to the first direction and the second direction.

8. The battery pressurizing device according to claim 7, wherein: Projections of two adjacent pressure members along the third direction at least partially overlap.

9. The battery pressurizing device according to any one of claims 5 to 8, wherein: The mounting member includes a first mounting sub-member and a plurality of second mounting sub-members. The plurality of second mounting sub-members are mounted on one side of the first mounting sub-member along the first direction. The pressure member is rotatably connected to the second mounting sub-member.

10. The battery pressurizing device according to claim 9, wherein: The pressurizing mechanism further includes an elastic member, and the elastic member is arranged between the first mounting sub-member and the second mounting sub-member.

11. The battery pressurizing device according to claim 10, wherein: The pressurizing mechanism further includes a connecting rod, the connecting rod is used to connect the first mounting sub-component and the second mounting sub-component, and the elastic member is sleeved on the connecting rod.

12. The battery pressurizing device according to any one of claims 9 to 11, wherein: The second mounting sub-component is connected to a plurality of the pressurizing components.

13. The battery pressurizing device according to claims 9 to 12, wherein: The second mounting sub-component includes a main body and at least one pair of lugs extending from the main body along a first direction, each pair of lugs being spaced apart and arranged in parallel along a second direction, so that each pressing member is rotatably mounted in each pair of lugs by means of a pivot member.

14. The battery pressurizing device according to any one of claims 6 to 13, wherein: The spacing between the plurality of pressurizing assemblies in the third direction is adjustable, and is adjusted by a distance-changing mechanism connected to the first mounting member.

15. The battery pressurizing device according to claim 14, wherein: The pitch changing mechanism comprises a bidirectional adjusting screw.

16. The battery pressurizing device according to claim 14 or 15, wherein: The battery pressurizing device further includes a fixing member, and a plurality of the first mounting sub-members are slidably connected to the fixing member along the third direction, and the third direction is perpendicular to the first direction and the second direction.

17. The battery pressurizing device according to any one of claims 1 to 16, wherein: The battery pressurizing device further comprises a driving mechanism and a limiting member, wherein the driving mechanism is used to drive the pressurizing mechanism to move along the first direction, and the limiting member is used to limit the stroke of the driving mechanism.

18. The battery pressurizing device according to claim 17, wherein: The battery pressurizing device further comprises a sensor, and the sensor is used to detect whether the driving mechanism reaches the stroke.

19. The battery pressurizing device according to claim 16 or 17, wherein: The battery pressurizing device further includes a motion buffer, which is used to buffer the movement of the limiting member when the driving mechanism reaches a stroke.

20. The battery pressurizing device according to any one of claims 1 to 19, wherein: The battery pressurizing device further comprises a shaping mechanism, wherein the shaping mechanism is used to apply pressure to the battery, and the direction in which the shaping mechanism pressurizes the battery is perpendicular to the first direction.

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