Flexible built-in bracket for fixing battery product and battery product thereof

Abstract

The utility model relates to the technical field of battery assembly, in particular to a flexible built-in bracket for fixing a battery product and the battery product. Comprising four right-angle protective plates which are sequentially butted at four corners of a battery pack body, are made of metal materials, and are provided with battery cell side equal-height protective plates and extension protective plates which vertically extend along one sides of the battery cell side equal-height protective plates; the lower edge of the battery cell side equal-height protection plate and the lower edge of the extension protection plate are bent outwards to form first abutting surfaces; the upper edge of the extension protection plate extends upwards to form a shell cover abutting part, and the upper end of the shell cover abutting part is bent outwards to form a second abutting surface; through the four right-angle protection plates capable of being spliced and the fixing strips capable of being connected, the size of the frame formed by the right-angle protection plates can be flexibly adjusted according to different numbers of battery cells of the battery pack so as to adapt to the battery packs with different battery cell combinations, various models do not need to be arranged, the inventory is greatly reduced, and inconvenience in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery assembly technical field especially is fixed battery product's flexible type built -in support and battery product. BACKGROUND

[0002] Battery pack is a kind of energy storage device combined by multiple battery cells through series or parallel connection, usually packaged in a sealed housing, and equipped with battery management system to realize the monitoring and management of voltage, current and temperature. Battery pack is widely used in electric vehicles, energy storage systems and portable devices, with high energy density, long life and repeatable charge and discharge characteristics.

[0003] The existing packaging battery pack shell is generally set as a square body structure, which is often fixed in the shell by pouring glue or not pouring glue. The structure of not using pouring glue packaging is often fixed by built-in support, which can reduce the overall weight of battery pack, because it does not need to add additional glue material, which helps to improve energy density, especially suitable for weight sensitive application scenarios such as electric vehicles and portable devices. Secondly, the design of not pouring glue makes the battery pack more maintainable, when a single battery cell or module fails, it can be more convenient to replace or repair, reducing maintenance cost and time. In addition, the non-glue packaging simplifies the production process, reduces the manufacturing cost, and avoids the problems of air bubbles, unevenness and other problems that may occur during the curing process of glue, improves production efficiency and consistency.

[0004] However, the existing built-in support structure design is fixed, and the battery pack will configure different number of battery cells according to production demand, the built-in support cannot adjust its size according to different number of battery cells, resulting in the need to set multiple models of built-in support to meet the battery pack with different number of battery cell combinations, which will increase the inventory, bring many inconvenience, therefore, it is necessary to put forward an improved technical scheme to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a technical scheme that can solve the above problems.

[0006] The utility model relates to a flexible built-in support of fixed battery product for fixing and installing the square body structure battery pack body to the inside of battery shell, including four right angle guard plates of abutting in turn at the four corner positions of battery pack body, and the right angle guard plate adopts metal material to make, and the right angle guard plate has the electric core side department equal height guard plate and the extension guard plate of vertical extension along the one side of electric core side department equal height guard plate, and the lower edge of electric core side department equal height guard plate and the lower edge of extension guard plate all are outwardly bent and set with first abutting face, the upper edge of extension guard plate still extends and forms the shell cover abutting portion upwards, and the second abutting face is set up outside the outer bending of the upper end of shell cover abutting portion, and still connects the fixed strip between the two extension guard plates of being located at the same side of battery pack body.

[0007] Preferably, the two electric core side department equal height guard plates located on the same side of the battery pack body are spaced apart.

[0008] Preferably, the two electric core side department equal height guard plates located on the same side of the battery pack body are integrally connected.

[0009] Preferably, the two ends of the fixed strip are provided with two connecting holes, and the extension guard plate is formed with a connecting column abutting the connecting hole, and the fixed strip and the extension guard plate are fixedly connected through the fixed cooperation of the connecting hole and the connecting column.

[0010] Preferably, a first cushion pad is further provided on the second abutting face.

[0011] Preferably, the flexible built-in support further comprises a cross beam arranged on the battery pack body, and the lower end of the cross beam is provided with a second cushion pad abutting the battery pack body.

[0012] Preferably, a shell wall abutting block is further arranged at each end of the cross beam.

[0013] A battery product comprises the flexible built-in support of fixed battery product, a battery shell, a battery pack body and a battery management module, the battery management module is arranged on the battery pack body, the flexible built-in support is tightly abutted between the battery pack body and the battery shell, the battery pack body is fixedly installed in the inside of the battery shell through the flexible built-in support, and wherein:

[0014] The battery shell comprises a shell body and a shell cover sealingly covering the shell body, the first abutting face abuts the bottom of the shell body, the second abutting face abuts the shell cover, and the first abutting face and the second abutting face also abut the inner side of the battery shell.

[0015] Preferably, the battery pack body comprises a plurality of electric cores, the plurality of electric cores are arranged and combined into at least one row, the plurality of electric cores are electrically connected with the battery management module, and a third cushion pad is arranged between adjacent electric cores and between the electric cores and the flexible built-in support.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] By four splicable right angle guards and connectable fixing strips, the frame size can be flexibly adjusted according to the different number of battery cells, so that the battery pack with different cell combinations can be adapted, without setting multiple models, and the inventory is greatly reduced, and the inconvenience in the prior art is solved.

[0018] The flexible built-in support has simple structure, simplified production process and reduced manufacturing cost. The right angle guard is made of metal material and has high strength. The cell side high guard can effectively protect and fix the cell side. The guard is tightly abutted with the bottom of the shell and the shell cover through the first and second abutting surfaces, and is abutted with the inner side of the battery shell. In addition, the connection of the fixing strip can stably fix the battery pack body in the battery shell, guarantee the stability of the battery product in use, and the shell cover abutting part can form a space between the battery pack body and the shell cover, so that the battery management module or other modules can be arranged, and the space in the battery shell is ensured to guarantee the firmness and reliability of the battery pack body.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a structural schematic view of the battery product in the present application;

[0022] Figure 2 is a structural schematic view of the flexible built-in support, the battery pack body and the battery management module in the present application;

[0023] Figure 3 is a structural schematic view of the flexible built-in support, the battery pack body and the battery management module in the present application; Figure 2

[0024] Figure 4 is a structural schematic view of the flexible built-in support, the battery pack body and the battery management module in the present application; Figure 2

[0025] Figure 5 is another structural schematic view of the flexible built-in support, the battery pack body and the battery management module in the present application;​​

[0026] Figure 6 is the utility model Figure 5 structure diagram after removing the battery pack body and the battery management module;

[0027] Figure 7 is the split structure schematic diagram of the battery pack body and the crossbeam of the utility model.

[0028] The reference signs and names in the drawings are as follows:

[0029] Right angle guard plate 10, cell side equal height guard plate 11, extension guard plate 12, connecting column 121, first abutting surface 13, shell cover abutting part 14, second abutting surface 15, first buffer pad 151, fixed strip 16, connecting hole 161, crossbeam 17, second buffer pad 171, shell wall abutting block 172, battery pack body 20, third buffer pad 21, battery shell 30, shell 31, shell cover 32, battery management module 40. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Please refer to Figures 1-7The utility model discloses a flexible built -in support of fixed battery product for square body structure's battery pack body 20 fixed mounting to the inside of battery shell 30, including four right angle guard plates 10 of abutting in battery pack body 20 four corner positions in proper order, right angle guard plate 10 adopts metal material to make, right angle guard plate 10 has the equal height guard plate 11 of battery cell side portion and the extension guard plate 12 of vertical extension along the equal height guard plate 11 of battery cell side portion, the lower edge of equal height guard plate 11 of battery cell side portion and the lower edge of extension guard plate 12 all are outwardly bent and set with first abutment surface 13, the upper edge of extension guard plate 12 still extends and is formed with shell cover abutment portion 14, and the second abutment surface 15 is outwardly bent and set with on the upper end of shell cover abutment portion 14, still be connected with fixed strip 16 between two extension guard plates 12 of being located battery pack body 20 same side opposition.

[0032] When assembling, four right angle guard plates 10 are sequentially abutted at four corner positions of the battery pack body 20, since the right angle guard plates 10 are made of metal material, have good strength and stability, the right angle structure formed by the equal height guard plate 11 of the battery cell side portion and the extension guard plate 12 can be well fitted to the corners of the battery pack body 20. The fixed strip 16 is connected between the two extension guard plates 12 located on the same side of the battery pack body 20, further fixing the battery pack body 20, making it more stable in the horizontal direction. Specifically, the battery pack body 20 includes a plurality of battery cells 22, the plurality of battery cells 22 are arranged and combined into at least one row, the plurality of battery cells 22 are electrically connected with the battery management module 40, and the third buffer pad 21 is arranged between adjacent battery cells 22 and between the battery cells 22 and the flexible built-in support, which can improve the buffering and damping effect, and in combination with the arrangement of the fixed strip 16, the battery pack and the flexible built-in support are more firm and reliable after assembly. The battery pack body 20 with the flexible built-in support installed is placed in the shell body 31 of the battery shell 30, ensuring that the first abutment surface 13 of the right angle guard plate 10 abuts against the bottom of the shell body 31, and also abuts against the inner side of the battery shell 30, then the shell cover 32 is sealingly covered on the shell body 31, so that the second abutment surface 15 of the right angle guard plate 10 abuts against the shell cover 32, and the second abutment surface 15 also abuts against the inner side of the battery shell 30, thereby completing the assembly of the battery product.

[0033] Through the four splicable right-angle guards 10 and connectable fixing strips 16, the size of the frame formed thereby can be flexibly adjusted according to the number of battery cells, so as to adapt to battery packs of different cell combinations, without the need to set up multiple models, greatly reducing the inventory and solving the inconvenience in the prior art.

[0034] The flexible built-in support structure is simple, simplifying the production process and reducing the manufacturing cost. The right-angle guard 10 is made of metal material and has high strength. The cell side equal-height guard 11 can effectively protect and fix the side of the cell. The extension guard 12 is in close abutment with the bottom of the shell 31 and the shell cover 32 through the first abutment surface 13 and the second abutment surface 15 respectively, and is in abutment with the inner side of the battery shell 30. In addition, the connection of the fixing strip 16 can stably fix the battery pack body 20 inside the battery shell 30, ensuring the stability of the battery product during use. The shell cover abutment part 14 can form a certain space between the battery pack body 20 and the shell cover 32, and can set up a battery management module 40 or other modules, ensuring the firmness and reliability of the battery pack body 20 on the basis of providing sufficient space inside the battery shell 30.

[0035] The setting of the flexible built-in support continues the advantages of the non-glue filling fixing method, without the need to add additional glue materials, so as to reduce the overall weight of the battery pack, help to improve the energy density, and meet the requirements of weight-sensitive application scenarios such as electric vehicles and portable devices. The non-glue filling design makes the battery pack more maintainable. When a single cell or module fails, the flexible built-in support components such as the fixing strip 16 and the right-angle guard 10 can be removed more conveniently to replace or repair the cell or module, reducing the maintenance cost and time.

[0036] On the basis of the above technical solutions, as shown in Figure 2 and Figure 4 , in order to improve flexibility, the embodiment proposes to space apart the two cell side equal-height guards 11 located on the same side of the battery pack body 20. Different models or specifications of cells may have certain differences in size. Spacing apart the two cell side equal-height guards 11 on the same side makes the built-in support better adapt to the installation requirements of cells of different sizes, and can adapt to cells of different numbers of rows. In the production process, only the spacing of the equal-height guards needs to be adjusted according to the actual size of the cells, so as to adapt to multiple cells, improving the versatility and flexibility of the built-in support.

[0037] As shown in Figures 5-6As shown, to improve robustness, this embodiment proposes an integral connection between two equally high protective plates 11 on opposite sides of the battery pack body 20. This integral connection structure allows the flexible built-in support to form a unified enclosure. This structure is suitable for battery pack bodies 20 composed of a single row of cells. By adjusting the length of the fixing strip 16 according to the number of cells in the battery pack body 20, a secure fit can be achieved with the battery pack body 20. This structure provides a more robust fixation of the assembled battery pack body 20.

[0038] like Figure 3 As shown, based on the above embodiment, a further embodiment is proposed in which two connecting holes 161 are opened at both ends of the fixing strip 16, and connecting posts 121 that mate with the connecting holes 161 are formed on the extension guard plate 12. The fixing strip 16 and the extension guard plate 12 are fixedly connected by the fixed fit between the connecting holes 161 and the connecting posts 121. The connecting holes 161 and the connecting posts 121 are fixed by welding, riveting, snap-fitting or nut connection. The connection method of setting two connecting holes 161 and two connecting posts 121 can ensure the firmness and stability of the connection.

[0039] like Figure 4 , Figure 6 and Figure 7 As shown, based on the above embodiment, a first buffer pad 151 is further provided on the second contact surface 15 to improve the buffering and vibration reduction effect. The flexible built-in bracket also includes a crossbeam 17 provided on the battery pack body 20. The lower end of the crossbeam 17 is provided with a second buffer pad 171 that connects to the battery pack body 20. The crossbeam 17 is used to set the battery management module 40, so that the battery pack body 20, the flexible built-in bracket and the battery management module 40 can form a stable whole, which is convenient for assembling the whole into the battery case 30 and improves the assembly convenience. In addition, shell wall abutment blocks 172 are provided at both ends of the crossbeam 17, which can make the two ends of the crossbeam 17 fully bear the force with the inner side of the battery case 30. This can not only reasonably set the battery pack body 20 and the battery management module 40, but also strengthen the battery case 30, so that the battery case 30 can have higher compressive strength.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A flexible built-in bracket for fixing a battery product, for fixing and mounting a battery pack body (20) of a square body structure to the inside of a battery case (30), characterized by, The application relates to a battery pack protection structure, which comprises four right-angle protection plates (10) which are sequentially butted at four corner positions of a battery pack body (20), wherein the right-angle protection plates (10) are made of metal materials, the right-angle protection plates (10) have cell side equal-height protection plates (11) and extension protection plates (12) which vertically extend along one side of the cell side equal-height protection plates (11), the lower edges of the cell side equal-height protection plates (11) and the lower edges of the extension protection plates (12) are outwardly bent to be provided with first abutting faces (13), the upper edges of the extension protection plates (12) are further upwardly extended to be formed with shell cover abutting portions (14), the upper ends of the shell cover abutting portions (14) are outwardly bent to be provided with second abutting faces (15), and fixed strips (16) are further connected between two extension protection plates (12) which are located at the same side of the battery pack body (20).

2. A flexible built-in holder for securing a battery product according to claim 1, characterized in that The two cell side equal-height protection plates (11) which are located at the same side of the battery pack body (20) are spaced apart.

3. The flexible built-in holder for securing a battery product according to claim 1, wherein, The two cell side equal-height protection plates (11) which are located at the same side of the battery pack body (20) are integrally connected.

4. The flexible built-in holder for securing a battery product according to claim 1, wherein, Two connecting holes (161) are formed in the two ends of the fixed strip (16), connecting columns (121) are formed on the extension protection plates (12) and are connected to the connecting holes (161), and the fixed strip (16) and the extension protection plates (12) are fixedly connected through the fixed cooperation of the connecting holes (161) and the connecting columns (121).

5. The flexible built-in holder for securing a battery product according to claim 1, wherein, First buffer pads (151) are further arranged on the second abutting faces (15).

6. The flexible built-in holder for securing a battery product according to claim 1, wherein, The flexible built-in support further comprises a cross beam (17) arranged on the battery pack body (20), and the lower end of the cross beam (17) is provided with second buffer pads (171) which are connected to the battery pack body (20).

7. The flexible built-in holder for securing a battery product according to claim 6, wherein, Shell wall abutting blocks (172) are further arranged at the two ends of the cross beam (17).

8. A battery product comprising a flexible built-in holder for securing a battery product according to any one of claims 1-7, characterized in that, The application further relates to a battery shell (30), a battery pack body (20) and a battery management module (40), wherein the battery management module (40) is arranged on the battery pack body (20), the flexible built-in support is tightly abutted between the battery pack body (20) and the battery shell (30), and the battery pack body (20) is fixedly installed in the inside of the battery shell (30) through the flexible built-in support, and wherein: The battery shell (30) comprises a shell body (31) and a shell cover (32) which is tightly closed on the shell body (31), the first abutting faces (13) are abutted to the bottom of the shell body (31), the second abutting faces (15) are abutted to the shell cover (32), and the first abutting faces (13) and the second abutting faces (15) are further abutted to the inside of the battery shell (30).

9. A battery product according to claim 8, characterised in that The battery pack body (20) comprises a plurality of cells (22), the plurality of cells (22) are arranged and combined into at least one row, the plurality of cells (22) are electrically connected with the battery management module (40), and third buffer pads (21) are arranged between adjacent cells (22) and between the cells (22) and the flexible built-in support.

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