Battery cell positioning mechanism and battery

Abstract

The utility model provides a battery cell positioning mechanism and a battery, relates to the field of lithium batteries, and aims to solve the problems that the difficulty in positioning and supporting an extra-long battery cell is high, the battery cell is bent and deformed, and the product yield is influenced to a certain extent. The utility model provides a battery cell positioning mechanism. The battery cell positioning mechanism comprises a side plate assembly and a clamping plate assembly, the side plate assembly comprises a first side plate and a second side plate, each of the first side plate and the second side plate comprises a butt joint part and a connecting part, a positioning groove is formed in the end part of each butt joint part, and the butt joint part of the first side plate is in butt joint with the butt joint part of the second side plate, so that the positioning grooves are in butt joint to form a positioning hole for positioning a tab of a battery cell; the clamping plate assembly comprises a first clamping plate and a second clamping plate, the two ends of the first side plate and the two ends of the second side plate are connected with the first clamping plate and the second clamping plate respectively, and a rectangular positioning space is formed by butt joint parts which are matched and in butt joint.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery core positioning mechanism and a battery. Background Art

[0002] As lithium-ion battery technology becomes increasingly mature, lithium-ion batteries are widely used as power batteries in electric vehicles and energy storage fields, and the requirements for the performance and safety of lithium-ion batteries are increasing.

[0003] Existing battery cell structures are generally short, which limits the space provided. Moreover, the overall strength of longer battery cells is difficult to control after connection, and bending and deformation problems often occur, resulting in reduced battery yield.

[0004] Therefore, there is an urgent need to provide a cell positioning mechanism and a battery to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of the present invention is to provide a battery cell positioning mechanism and a battery, so as to solve, to a certain extent, the problem that it is difficult to position and support extra-long battery cells, which causes the battery cells to bend and deform, and affects the product yield.

[0006] The utility model provides a battery cell positioning mechanism, including a side plate assembly and a card plate assembly; the side plate assembly includes a first side plate and a second side plate, the first side plate and the second side plate both include a docking portion and a connecting portion, a positioning groove is formed at the end of the docking portion, the docking portion of the first side plate is connected to the docking portion of the second side plate, so that the positioning grooves are connected to form a positioning hole for positioning the battery cell tab; the card plate assembly includes a first card plate and a second card plate, the two ends of the first side plate and the two ends of the second side plate are respectively connected to the first card plate and the second card plate, and the docking portions connected to each other form a rectangular positioning space.

[0007] Wherein, the connecting portion includes a plurality of supporting segments and a plurality of connecting segments, the supporting segments and the connecting segments are alternately arranged, and the width of the supporting segments is greater than the width of the connecting segments.

[0008] Specifically, a clamping portion is formed at one end of the connecting section located at the end portion away from the supporting section, and a matching portion is formed at the position of the first clamping plate and the second clamping plate corresponding to the clamping portion. The clamping portion is clamped with the matching portion, so that the first clamping plate and the second clamping plate are detachably connected to the first side plate and the second side plate.

[0009] Furthermore, the clamping portion includes a clamping section and a limiting section, the clamping section is embedded in the matching portion, the limiting section is perpendicular to the clamping section, and abuts against the side of the first clamping plate and the second clamping plate away from the battery core.

[0010] Wherein, tab vias are formed on both the first card plate and the second card plate, and the tab vias correspond to the positioning holes.

[0011] Specifically, the docking portion is arranged perpendicular to the connecting portion, and the docking portion is located in the center of the connecting portion, so that the first side panel and the second side panel are in a T-shaped structure.

[0012] Furthermore, the side panel assembly and the card panel assembly are both made of insulating materials.

[0013] Compared with the prior art, the battery cell positioning mechanism provided by the present invention has the following advantages:

[0014] The battery cell positioning mechanism provided by the utility model includes a side plate assembly and a card plate assembly; the side plate assembly includes a first side plate and a second side plate, the first side plate and the second side plate both include a docking portion and a connecting portion, a positioning groove is formed at the end of the docking portion, the docking portion of the first side plate is connected to the docking portion of the second side plate, so that the positioning grooves are connected to form a positioning hole for positioning the battery cell tab; the card plate assembly includes a first card plate and a second card plate, the two ends of the first side plate and the two ends of the second side plate are respectively connected to the first card plate and the second card plate, and the docking portions connected to each other form a rectangular positioning space.

[0015] From this analysis, it can be seen that the docking portion formed by the first side plate and the second side plate, and the positioning groove formed at the end of the docking portion, can form a positioning hole by docking the positioning groove after the docking portion is docked, so that the pole ear of the battery cell can be positioned, and then the series connection of two long battery cells can be realized, and the two long battery cells after connection can form a battery cell group with a longer length, that is, an extra-long battery cell.

[0016] Since the present application further has a connecting part, and the two ends of the connecting part are respectively connected to the first card plate and the second card plate, two rectangular positioning spaces can be formed by docking the first side plate and the second side plate in conjunction with the first card plate and the second card plate, providing stable support for the two long battery cells in the length direction, thereby reducing the connection strength of the overall extra-long battery cells to a certain extent, avoiding deformation and affecting the use of the battery.

[0017] In addition, the utility model also provides a battery, including a battery cell, an insulating film, a shell and the above-mentioned battery cell positioning mechanism; the battery cell is located in the positioning space, the insulating film is covered on the outside of the side plate assembly and the card assembly, and the battery cell, the battery cell positioning mechanism and the insulating film are all located in the shell.

[0018] Among them, the battery provided by the present invention also includes an explosion-proof valve, the insulating film is formed with a slit portion at a position corresponding to the first side plate or the second side plate, the shell is formed with a mounting portion corresponding to the slit portion, and the explosion-proof valve is arranged in the mounting portion.

[0019] Specifically, the battery provided by the present invention also includes a positive electrode cover plate and a negative electrode cover plate; openings are formed at both ends of the shell, and the positive electrode cover plate and the negative electrode cover plate are arranged corresponding to the openings, and form an accommodating space with the shell for accommodating the battery cell and the battery cell positioning mechanism.

[0020] The battery formed using the cell positioning mechanism provided in this application can connect two long cells in series, and can form an extra-long cell under the support of the cell positioning mechanism, and can avoid the problem of bending and deformation to a certain extent, making the overall battery more stable and with a higher yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the overall structure of the battery cell positioning mechanism provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the partial structure of the first side plate in the battery cell positioning mechanism provided by an embodiment of the present utility model;

[0024] Figure 3 A schematic structural diagram of the first clamping plate in the battery cell positioning mechanism provided by an embodiment of the present utility model;

[0025] Figure 4 A partial schematic diagram of the clamping portion and the mating portion of the battery cell positioning mechanism provided by an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of an exploded view of a battery provided in an embodiment of the present utility model.

[0027] In the figure: 1-first side panel; 101-docking part; 1011-positioning groove; 102-connecting part; 1021-supporting section; 1022-connecting section; 103-clamping part; 1031-clamping section; 1032-limiting section; 2-second side panel; 3-first clamping plate; 301-ear through hole; 302-matching part; 4-second clamping plate; 5-battery cell; 6-insulating film; 7-housing; 8-explosion-proof valve; 9-positive electrode cover; 10-negative electrode cover. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0029] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0031] In the description of the embodiments of the present application, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0033] For ease of description, spatially relative terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as illustrated in the drawings. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0034] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0035] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0036] The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various configurations, other configurations are possible, as will be apparent upon understanding the disclosure of this application. In addition, the technical solutions between the various embodiments may be combined with each other, but this must be based on the ability of a person of ordinary skill in the art to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] like Figure 1 Combine Figure 2As shown, the utility model provides a battery cell positioning mechanism, including a side panel assembly and a card panel assembly; the side panel assembly includes a first side panel 1 and a second side panel 2, and the first side panel 1 and the second side panel 2 both include a docking portion 101 and a connecting portion 102, and a positioning groove 1011 is formed at the end of the docking portion 101, and the docking portion 101 of the first side panel 1 is connected to the docking portion 101 of the second side panel 2, so that the positioning groove 1011 is connected to form a positioning hole for positioning the tab of the battery cell 5; the card panel assembly includes a first card panel 3 and a second card panel 4, and the two ends of the first side panel 1 and the two ends of the second side panel 2 are respectively connected to the first card panel 3 and the second card panel 4, and cooperate with the docking portions 101 to form a rectangular positioning space.

[0038] Compared with the prior art, the battery cell positioning mechanism provided by the present invention has the following advantages:

[0039] The battery cell positioning mechanism provided by the present invention has a docking portion 101 formed by the first side plate 1 and the second side plate 2, and a positioning groove 1011 formed at the end of the docking portion 101. After the docking portions 101 are docked, the positioning groove 1011 can be docked to form a positioning hole, thereby positioning the tab of the battery cell 5, and further realizing the series connection of two long battery cells 5. The two long battery cells 5 after connection can form a battery cell 5 group with a longer length, that is, an extra-long battery cell 5.

[0040] Since the present application further has a connecting portion 102, and the two ends of the connecting portion 102 are respectively connected to the first card plate 3 and the second card plate 4, the first side plate 1 and the second side plate 2 can be docked to cooperate with the first card plate 3 and the second card plate 4 to form two rectangular positioning spaces, providing stable support for the two long battery cells 5 in the length direction, thereby reducing the connection strength of the overall extra-long battery cell 5 to a certain extent, avoiding deformation and affecting the use of the battery.

[0041] Among them, Figure 1 As shown, the connecting portion 102 includes a plurality of supporting segments 1021 and a plurality of connecting segments 1022 . The supporting segments 1021 and the connecting segments 1022 are alternately arranged, and the width of the supporting segments 1021 is greater than the width of the connecting segments 1022 .

[0042] By alternately arranging the support segments 1021 and the connecting segments 1022, on the one hand, the battery cells 5 and the first side plate 1 and the second side plate 2 as a whole can be supported by the support segments 1021; on the other hand, since the width of the connecting segments 1022 is smaller than the width of the supporting segments 1021, during use, the gas produced by the battery cells 5 can flow directly through the position of the connecting segments 1022. Moreover, since the connecting segments 1022 and the supporting segments 1021 in the present application are alternately arranged, each position of the battery cells 5 can be fully covered, so that the gas can be quickly released, thereby improving the safety of the overall battery.

[0043] It should be noted here that the connecting section 1022 and the supporting section 1021 in this application are of the same length, thereby ensuring uniform force on the first side panel 1 and the second side panel 2 as a whole, and improving the support stability and exhaust stability of the overall structure.

[0044] Alternatively, as Figure 1 As shown, in this application, a clamping portion 103 is formed at the end of the connecting section 1022 away from the supporting section 1021, and a matching portion 302 is formed at the position of the first clamping plate 3 and the second clamping plate 4 corresponding to the clamping portion 103. The clamping portion 103 is clamped with the matching portion 302, so that the first clamping plate 3 and the second clamping plate 4 are detachably connected to the first side panel 1 and the second side panel 2.

[0045] The matching portion 302 in the present application is a card slot, and the fast and detachable connection between the first side panel 1 and the second side panel 2 and the first card plate 3 and the second card plate 4 is achieved through the card connection between the card portion 103 and the card slot.

[0046] Preferably, if Figure 1 Combine Figure 4 As shown, the clamping portion 103 in this application includes a clamping section 1031 and a limiting section 1032. The clamping section 1031 is embedded in the mating portion 302. The limiting section 1032 is perpendicular to the clamping section 1031 and abuts against the side of the first clamping plate 3 and the second clamping plate 4 facing away from the battery cell 5.

[0047] The limiting section 1032 perpendicular to the clamping section 1031 can limit the displacement of the connecting portion 102 in the length direction, that is, when the clamping section 1031 is embedded in the matching portion 302, the limiting section 1032 can abut against the side of the first clamping plate 3 and the second clamping plate 4 facing away from the battery cell 5, thereby limiting the position of the first side plate 1 and the second side plate 2 in the length direction through the limiting section 1032, avoiding the problem of movement and squeezing of the battery cell 5 during installation and use, affecting the safety of the overall battery use.

[0048] Alternatively, as Figure 3 As shown, tab vias 301 are formed on both the first card plate 3 and the second card plate 4 in the present application, and the tab vias 301 correspond to the positioning holes.

[0049] It can be understood that when the docking parts 101 of the first side plate 1 and the second side plate 2 are connected to form a positioning hole, installation space can be provided for the positive and negative ears of the two battery cells 5. Accordingly, through the ear through-holes 301 formed on the first card plate 3 and the second card plate 4, installation space can be provided for the positive or negative ear on the other side of the battery cell 5.

[0050] Alternatively, as Figure 1 Combine Figure 2As shown, the docking portion 101 in this application is arranged perpendicular to the connecting portion 102, and the docking portion 101 is located in the center of the connecting portion 102, so that the first side panel 1 and the second side panel 2 are in a T-shaped structure.

[0051] The docking portion 101 is located in the center so that the lengths of the connecting portions 102 on both sides of the docking portion 101 are the same, thereby making the force uniform, ensuring the uniform force of the entire structure after assembly, and improving the stability of the structure.

[0052] The T-shaped structure can, on the one hand, form a more regular rectangular installation space to accommodate the battery core 5 , and on the other hand, can make the docking and assembly of the first side panel 1 and the second side panel 2 smoother and more convenient.

[0053] It can be understood that the side panel assembly and the card panel assembly in the present application are both made of insulating materials.

[0054] In addition, if Figure 5 As shown, the utility model also provides a battery, including a battery cell 5, an insulating film 6, a shell 7 and the above-mentioned battery cell positioning mechanism; the battery cell 5 is located in the positioning space, the insulating film 6 is covered on the outside of the side plate assembly and the card assembly, and the battery cell 5, the battery cell positioning mechanism and the insulating film 6 are all located in the shell 7.

[0055] The battery formed using the cell positioning mechanism provided in this application can connect two long cells 5 in series, and can form an extra-long cell 5 under the support of the cell positioning mechanism, and can avoid the problem of bending and deformation to a certain extent, making the overall battery more stable and with a higher yield.

[0056] Alternatively, as Figure 5 As shown, the battery provided by the present invention further includes an explosion-proof valve 8, the insulating film 6 is formed with a slit portion at a position corresponding to the first side plate 1 or the second side plate 2, the shell 7 is formed with a mounting portion corresponding to the slit portion, and the explosion-proof valve 8 is arranged in the mounting portion.

[0057] The explosion-proof valve 8 can be used to discharge gas and relieve explosion-proof pressure. The present application further forms a slit portion at the position of the insulating film 6 corresponding to the first side plate 1 or the second side plate 2. When gas is generated inside the battery, it can be discharged directly through the connecting section 1022 and the slit portion, greatly reducing the distance of the gas discharge path of the long battery cell 5, allowing the gas to be discharged more quickly, thereby improving the safety of the overall battery use.

[0058] Alternatively, as Figure 5As shown, the battery provided by the present invention further includes a positive electrode cover plate 9 and a negative electrode cover plate 10; openings are formed at both ends of the shell 7, and the positive electrode cover plate 9 and the negative electrode cover plate 10 are arranged corresponding to the openings, and form an accommodating space with the shell 7 for accommodating the battery cell 5 and the battery cell positioning mechanism.

[0059] Preferably, the positive electrode cover plate 9 and the negative electrode cover plate 10 in the present application do not need to be provided with an explosion-proof valve 8, so there is no need to form a groove structure for positioning the explosion-proof valve 8, which greatly saves the manufacturing process and improves the structural strength.

[0060] It should be noted that, since the ends of the first side plate 1 and the second side plate 2 in the present application form a clamping portion 103, the positive electrode cover plate 9 and the negative electrode cover plate 10 in the present application are correspondingly avoided to ensure that no interference occurs during installation.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery cell positioning mechanism, characterized in that: Including side panel assembly and card board assembly; The side panel assembly comprises a first side panel (1) and a second side panel (2), the first side panel (1) and the second side panel (2) both comprising a docking portion (101) and a connecting portion (102), a positioning groove (1011) being formed at the end of the docking portion (101), the docking portion (101) of the first side panel (1) being in contact with the docking portion (101) of the second side panel (2), so that the positioning grooves (1011) are docked to form a positioning hole for positioning the tab of the battery cell (5); The card plate assembly comprises a first card plate (3) and a second card plate (4); the two ends of the first side plate (1) and the two ends of the second side plate (2) are respectively connected to the first card plate (3) and the second card plate (4), and cooperate with the corresponding docking parts (101) to form a rectangular positioning space.

2. The battery cell positioning mechanism according to claim 1, characterized in that: The connecting portion (102) comprises a plurality of supporting segments (1021) and a plurality of connecting segments (1022), wherein the supporting segments (1021) and the connecting segments (1022) are alternately arranged, and the width of the supporting segments (1021) is greater than the width of the connecting segments (1022).

3. The battery cell positioning mechanism according to claim 2, characterized in that: A clamping portion (103) is formed at one end of the connecting section (1022) located at the end portion and away from the supporting section (1021); a matching portion (302) is formed at the position of the first clamping plate (3) and the second clamping plate (4) corresponding to the clamping portion (103); the clamping portion (103) is clamped with the matching portion (302), so that the first clamping plate (3) and the second clamping plate (4) are detachably connected to the first side plate (1) and the second side plate (2).

4. The battery cell positioning mechanism according to claim 3, characterized in that: The clamping portion (103) comprises a clamping section (1031) and a limiting section (1032); the clamping section (1031) is embedded in the matching portion (302); the limiting section (1032) is perpendicular to the clamping section (1031) and abuts against a side of the first clamping plate (3) and the second clamping plate (4) facing away from the battery core (5).

5. The battery cell positioning mechanism according to claim 1, characterized in that: Tab through holes (301) are formed on both the first clamping plate (3) and the second clamping plate (4), and the tab through holes (301) correspond to the positioning holes.

6. The battery cell positioning mechanism according to claim 1, characterized in that: The docking portion (101) is arranged perpendicular to the connecting portion (102), and the docking portion (101) is located in the center of the connecting portion (102), so that the first side plate (1) and the second side plate (2) are in a T-shaped structure.

7. The battery cell positioning mechanism according to claim 1, characterized in that: The side plate assembly and the card plate assembly are both made of insulating materials.

8. A battery, characterized in that: It comprises a battery cell (5), an insulating film (6), a shell (7), and a battery cell positioning mechanism according to any one of claims 1 to 7; The battery core (5) is located in the positioning space, the insulating film (6) is wrapped around the side plate assembly and the card assembly, and the battery core (5), the battery core positioning mechanism, and the insulating film (6) are all located in the shell (7).

9. The battery according to claim 8, characterized in that It also includes an explosion-proof valve (8), the insulating film (6) is formed with a slit portion at a position corresponding to the first side plate (1) or the second side plate (2), the shell (7) is formed with a mounting portion corresponding to the slit portion, and the explosion-proof valve (8) is arranged in the mounting portion.

10. The battery according to claim 8, characterized in that It also includes a positive electrode cover plate (9) and a negative electrode cover plate (10); Openings are formed at both ends of the shell (7); the positive electrode cover plate (9) and the negative electrode cover plate (10) are arranged corresponding to the openings and form a receiving space with the shell (7) for receiving the battery cell (5) and the battery cell positioning mechanism.

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