Plane spliced battery pack

Abstract

The utility model discloses a planar spliced battery pack. The planar spliced battery pack comprises a battery substrate and a plurality of conductive pieces, a plurality of single battery cells are printed and overlapped in the battery substrate, the plurality of single battery cells are arranged at intervals, and a mounting groove is formed between every two adjacent single battery cells on the surface of the battery substrate; one conductive piece is selectively arranged in one mounting groove so as to communicate the conductive layers of the two adjacent single battery cells in the mounting groove; the battery substrate is located in a cutting area defined by a plurality of conducted single battery cells. According to the technical scheme, diversified combination of the battery pack is realized, the battery pack can be flexibly produced according to the requirements of different voltages, the cost is greatly reduced, and the charging function of the battery pack can be realized by flexibly applying the technical means such as the battery connecting pieces and the battery connecting holes.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible batteries, in particular to a plane spliced ​​battery pack. Background Art

[0002] With the continuous development of electronic technology, electronic devices are tending to be thin, light, small and intelligent. Flexible devices are gradually becoming an emerging force in the direction of thin, light, small and intelligent, such as flexible screens, flexible mobile phones, flexible watches, etc. The flexible and bendable characteristics of flexible batteries make them suitable for power sources of planar devices.

[0003] Existing printed battery packs connect multiple printed batteries in series to obtain a higher open circuit voltage. However, when printed batteries meet different voltage requirements, they often need to be redesigned, and changing the printing screen is time-consuming and labor-intensive, with high production costs. Therefore, the connection method of existing printed battery packs has the problems of low flexibility and low degree of freedom, and when the capacity of a single battery cell in the existing printed battery pack decreases, there is no good way to replenish the power, which will make the entire battery pack scrapped, resulting in a huge waste of resources. Utility Model Content

[0004] The main purpose of the utility model is to propose a planar spliced ​​battery pack, aiming to achieve a diversified combination of battery packs. In the face of different voltage requirements, it can be flexibly produced, greatly reducing costs, and through technical means, the charging operation of the printed battery pack can be realized.

[0005] To achieve the above-mentioned purpose, the planar spliced ​​battery pack proposed by the utility model comprises:

[0006] A battery substrate, wherein a plurality of single cells are printed and overlapped in the battery substrate, the plurality of single cells are arranged at intervals, and a mounting groove is provided on the surface of the battery substrate between two adjacent single cells;

[0007] A plurality of conductive members, one of which can be selectively disposed in one of the mounting slots to connect the conductive layers of two adjacent single cells located in the mounting slot;

[0008] The battery substrate is located on a plurality of conductive single cells and encloses them to form a cutting area.

[0009] Optionally, the conductive member is detachably connected to the mounting groove.

[0010] Optionally, the conductive member includes a first conductive portion and a second conductive portion, and the first conductive portion and the second conductive portion are inserted side by side in the mounting groove to electrically connect conductive layers of two adjacent single battery cells respectively.

[0011] Optionally, the planar spliced ​​battery pack further includes an insulating member, which is detachably installed in the conductive member to separate the conductive member into two parts.

[0012] Optionally, the conductive member is a carbon rod, a solid conductive glue or a conductive metal.

[0013] Optionally, two single battery cells are overlapped in the thickness direction, and two ends of a conductive member are electrically connected to the mounting grooves of the two single battery cells respectively.

[0014] Optionally, the battery substrate is also provided with a connection hole, which extends to the conductive layer of the single cell, and the two single cells are overlapped in the thickness direction. The two ends of a conductive member are respectively passed through the connection holes of the two battery substrates and electrically connect the conductive layers of the two single cells.

[0015] Optionally, the planar spliced ​​battery pack also includes a conductive connector, and the multiple battery substrates are cut and relatively overlapped or arranged in parallel, and the two ends of the conductive connector are respectively inserted into the mounting grooves or the connecting holes of the two battery substrates to electrically connect the conductive layers of the two single battery cells.

[0016] Optionally, the shape of the single battery cell is rectangular, circular, triangular or elliptical.

[0017] Optionally, the shapes of the plurality of single battery cells are the same, and the areas of the plurality of single battery cells are the same.

[0018] The technical solution of the utility model uses a conductive member to electrically connect two single cells. The conductive member is set in the installation groove of the battery substrate of the single cell, which can connect the conductive layers of the two single cells and realize the conduction of the two single cells. Then the battery substrate is cut to obtain battery packs of different sizes, different combinations and different voltages. The diversified combination of battery packs is realized, and flexible production can be carried out in response to the needs of different voltages, which greatly reduces the cost and has a high degree of freedom. The battery pack's power replenishment function can be realized by flexibly using technical means such as battery connectors and battery connection holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1It is a structural schematic diagram of an embodiment of a plane splicing battery pack of the utility model;

[0021] Figure 2 for Figure 1 The schematic diagram of the structure of the conductive member filled in the mounting groove of the plane splicing battery pack according to the embodiment shown;

[0022] Figure 3 This is a schematic cross-sectional flow chart of filling a conductive member in an installation groove according to an embodiment of the utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of a conductive member according to an embodiment of the utility model, which is configured as a first conductive portion and a second conductive portion;

[0024] Figure 5 A schematic cross-sectional flow chart of providing an insulating member in accordance with an embodiment of the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of stacked battery substrates according to an embodiment of the utility model;

[0026] Figure 7 A schematic cross-sectional view of overlapping and parallel stacking of battery substrates according to an embodiment of the utility model is combined with a flow chart;

[0027] Figure 8 The cross-sectional view combined with the flow chart of an embodiment of the utility model in which battery substrates are overlapped and stacked in parallel and connected through conductive connectors.

[0028] Description of Figure Numbers:

[0029] Label name Label name 1 Flat splicing battery pack 10 Battery substrate 11 Mounting slot 20 Single cell 13 Connection hole 30 Conductive parts 31 The first conductive part 33 The second conductive portion 40 Insulation 50 Conductive connector

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0034] The utility model provides a planar spliced ​​battery pack 1.

[0035] In the embodiment of the present utility model, Figures 1 to 4 As shown, the planar spliced ​​battery pack 1 includes a battery substrate 10 and a plurality of conductive members 30; a plurality of single cells 20 are printed and overlapped in the battery substrate 10, and the plurality of single cells 20 are arranged at intervals, and a mounting groove 11 is opened on the surface of the battery substrate 10 between two adjacent single cells 20; a conductive member 30 can be selectively arranged in a mounting groove 11 to connect the conductive layers of two adjacent single cells 20 located in the mounting groove 11; the battery substrate 10 is located in the plurality of conductive single cells 20 to enclose a cutting area to form.

[0036] The battery substrate 10 is formed by overlapping two surfaces. In this embodiment, the two surfaces are surface A and surface B. Surface A is formed by printing the positive electrode material on the positive electrode substrate, and surface B is formed by printing the negative electrode material on the negative electrode substrate. There is adhesive on the substrates of surface A and surface B. The two substrates are bonded by the adhesive so that surface A and surface B overlap to form a battery pack. It can be understood that when the AB surfaces overlap, the positive electrode material on the A surface and the negative electrode material on the B surface are arranged alternately, and the multiple single cells 20 in the overlapped battery pack are arranged at intervals, and the polarities of two adjacent single cells 20 are opposite, that is, they are arranged in a positive-negative-positive-negative structure.

[0037] In this embodiment, a plurality of single cells 20 are arranged in a matrix. It is understandable that the number of the plurality of single cells 20 may be 16, 25, 36, etc. When the number is 16, the plurality of single cells 20 are arranged in a 4×4 matrix, i.e., having 4 rows and 4 columns, and the plurality of single cells 20 are combined into a square shape. When the number is 25, the plurality of single cells 20 are arranged in a 5×5 matrix, i.e., having 5 rows and 5 columns, and the plurality of single cells 20 are combined into a square shape. On this basis, the plurality of single cells 20 are located in the battery substrate 10 and are independent of each other, and the two adjacent single cells 20 are batteries with opposite polarities, and the plurality of single cells 20 are not connected.

[0038] Furthermore, the planar spliced ​​battery pack 1 includes a plurality of conductive parts 30, and a mounting groove 11 is provided on the surface of the battery substrate 10 between two adjacent single cells 20, and the groove side walls on opposite sides of the mounting groove 11 are connected to the conductive layers of the two single cells 20, and the conductive layers of the two single cells 20 are located at the same height in the mounting groove 11. By arranging the conductive part 30 in the mounting groove 11, the conductive part 30 can be arranged in the mounting groove 11 by injection, printing, etc., and different filling methods need to be adopted according to the properties and materials of the different conductive parts 30, which are not limited here. The conductive part 30 is arranged in the mounting groove 11, and the conductive part 30 can connect the conductive layers of the two single cells 20 to achieve the conduction effect of the two single cells 20 and realize the series connection of the two single cells 20. It is understandable that different single cells 20 can be connected in series according to different needs. It is only necessary to set the conductive member 30 in the installation groove 11 of any two adjacent single cells 20 to achieve the series connection of different adjacent single cells 20, and realize the connection of multiple single cells 20 in a positive-negative-positive-negative arrangement. With such a configuration, after the required multiple single cells 20 are connected through multiple conductive members 30, a battery pack composed of multiple cells connected in series is formed, and the edge of the battery pack is the cutting area. It can be cut from the battery substrate 10 along the cutting area to obtain the required battery pack. The utility model can be freely combined and spliced. When in use, the conductive member 30 can be filled in different installation grooves 11 as needed, and the battery pack of the required size can be cut in the large battery pack by itself. It can be flexibly produced, which greatly reduces the cost.

[0039] The technical solution of the utility model uses a conductive member 30 to electrically connect two single cells 20. The conductive member 30 is set in the installation groove 11 provided in the battery substrate 10 of the single cell 20, so that the conductive layers of the two single cells 20 can be connected to achieve the conduction of the two single cells 20; and the battery substrate 10 is then cut to obtain battery packs of different sizes, different combinations and different voltages. The diversified combination of battery packs is achieved, and flexible production can be achieved in response to the needs of different voltages, which greatly reduces the cost and has a high degree of freedom. In addition, the battery pack's power replenishment function can be achieved by flexibly using technical means such as battery connectors and battery connection holes.

[0040] In one embodiment of the present invention, Figure 3 , Figure 4 As shown, the conductive member 30 is detachably connected to the mounting slot 11 .

[0041] In this embodiment, the conductive member 30 is detachably connected to the mounting groove 11. By removing and installing the conductive member 30 from the mounting groove 11, two adjacent single battery cells 20 in the mounting groove 11 can be disconnected or connected. By flexibly setting the conductive member 30, a single or multiple single battery cells 20 can be independently split to achieve operations such as recharging. When the capacity of a battery cell in the battery pack decreases, the battery cell can be recharged through the connection, so that the battery capacity of the battery pack returns to the expected level and the capacity of the entire battery pack is maintained. The entire battery pack does not need to be disassembled, and the operation is simple and efficient.

[0042] In one embodiment of the present invention, Figure 4 As shown, the conductive member 30 includes a first conductive portion 31 and a second conductive portion 33 , and the first conductive portion 31 and the second conductive portion 33 are inserted side by side in the mounting groove 11 to electrically connect the conductive layers of two adjacent single battery cells 20 .

[0043] In this embodiment, the conductive member 30 is divided into a first conductive part 31 and a second conductive part 33, and the first conductive part 31 and the second conductive part 33 are inserted side by side in the mounting groove 11 to electrically connect the conductive layers of two adjacent single cells 20 respectively. In this way, the first conductive part 31 and the second conductive part 33 can be movably inserted in the mounting groove 11 respectively, and then when the first conductive part 31 and the second conductive part 33 are both inserted in the mounting groove 11, the two adjacent single cells 20 are connected through the first conductive part 31 and the second conductive part 33. For example, in this embodiment, the two conductive single cells 20 are the first single cell 20 and the second single cell 20, the first single cell 20 is connected to the first conductive part 31, and the second single cell 20 is connected to the second conductive part 33. When it is necessary to charge the first single cell 20, the second conductive part 33 is taken out to separate it from the conductive layer of the second single cell 20, and the charger is connected to the second conductive part 33 and the conductive layer of the first single cell 20, so that the first single cell 20 can be charged; when it is necessary to charge the second single cell 20, the first conductive part 31 is taken out to separate it from the conductive layer of the first single cell 20, and the charger is connected to the first conductive part 31 and the conductive layer of the second single cell 20, so that the second single cell 20 can be charged; and so on. In the present application, it is not limited to charging one single cell 20. The conductive parts 30 located at both ends of multiple single cells 20 can be taken out, and an embodiment of charging multiple single cells 20 at the same time is also possible. Through the flexible setting of the conductive part 30, a single or multiple single battery cells 20 can be independently disassembled to realize operations such as recharging. When the capacity of a battery cell in the battery pack decreases, the battery cell can be recharged through the connection, so that the battery capacity of the battery pack returns to the proper level and the capacity of the entire battery pack is maintained. There is no need to disassemble the entire battery pack, which is simple to operate and efficient.

[0044] In one embodiment of the present invention, Figure 5 As shown, the planar spliced ​​battery pack 1 further includes an insulating member 40 , which is detachably installed in the conductive member 30 to separate the conductive member 30 into two parts.

[0045] The planar spliced ​​battery pack 1 also includes an insulating member 40, which can be detachably installed in the conductive member 30 to separate the conductive member 30 into two parts. In this embodiment, the insulating member 40 is installed in the conductive member 30 so that the inside of the conductive member 30 is divided into two parts. When it is necessary to charge one of the single cells 20, the insulating member 40 is installed in the conductive member 30, and the charger is connected to one of the single cells 20, that is, the single cell 20 can be charged; when it is necessary to charge another single cell 20, the charger is connected to another single cell 20, that is, the other single cell 20 can be charged. It can be understood that after the insulating member 40 is removed, it does not affect the connection and conduction inside the conductive member 30, and the gap inside it can be automatically filled, maintaining the overall connection and conduction effect of the conductive member 30.

[0046] In an embodiment of the present invention, the conductive member 30 is a carbon rod, a solid conductive glue or a conductive metal.

[0047] The carbon rod can conduct electricity. Since the carbon rod has a high operating temperature, is easy to conduct electricity, and has good chemical stability, it can be used in the conductive member 30 for connection and conduction.

[0048] Solid conductive adhesive has a low curing temperature, reduces energy consumption, and avoids damage to the substrate. It can be used on temperature-sensitive materials or materials that cannot be welded. It has good thermomechanical properties, better toughness than alloy solders, and high fatigue resistance of the joints.

[0049] Conductive metals have good electrical conductivity. Metals are excellent conductive materials. Electrons move very easily in metals, so metal conductor electrodes can effectively conduct current. They have strong corrosion resistance. The surface of metal conductor electrodes can be treated with anti-corrosion treatment. They can be used for a long time in harsh environments such as humidity, high temperature, and corrosive gases without corrosion. The manufacturing cost is low. The price of metal raw materials is relatively low, and the manufacturing process is relatively simple. Therefore, the use of metal conductor electrodes can reduce the cost of electrode manufacturing.

[0050] In one embodiment of the present invention, Figure 6 As shown, two single battery cells 20 are overlapped in the thickness direction, and two ends of a conductive member 30 are electrically connected to the mounting grooves 11 of the two single battery cells 20 respectively.

[0051] In this embodiment, two single cells 20 are overlapped in the thickness direction, and the two ends of a conductive member 30 are electrically connected to the mounting grooves 11 of the two single cells 20, so that a laminated battery pack can be formed, and the conductive member 30 is used to conduct the single cells 20, which can be freely combined and spliced. When in use, the conductive member 30 can be filled in different mounting grooves 11 as needed, and the battery pack of the required size can be cut out from the large battery pack, which can be flexibly produced and greatly reduces the cost. The battery pack produced by the laminated process has a low internal resistance, which makes its battery capacity decay slowly, and its internal temperature distribution is uniform, maintaining the performance of the battery.

[0052] In one embodiment of the present invention, Figure 7 As shown, the battery substrate 10 is also provided with a connection hole 13, which extends to the conductive layer of the single battery cell 20. The two single battery cells 20 are overlapped in the thickness direction. The two ends of a conductive member 30 are respectively passed through the connection holes 13 of the two battery substrates 10, and electrically connect the conductive layers of the two single battery cells 20.

[0053] In this embodiment, the battery substrate 10 is further provided with a connection hole 13, which extends to the conductive layer of the single battery cell 20. The two single battery cells 20 are overlapped in the thickness direction. The two ends of a conductive member 30 are respectively passed through the connection holes 13 of the two battery substrates 10, and electrically connect the conductive layers of the two single battery cells 20. The single battery cells 20 are connected in the thickness direction by using the connection holes 13, and the single battery cells 20 are connected in the side-by-side direction by using the mounting grooves 11, so that a stacked battery pack with multiple battery packs stacked can be realized.

[0054] In one embodiment of the present invention, Figure 8 As shown, the planar spliced ​​battery pack 1 also includes a conductive connector 50. After cutting, multiple battery substrates 10 are relatively overlapped or arranged in parallel. The two ends of the conductive connector 50 are respectively inserted into the mounting grooves 11 or connection holes 13 of the two battery substrates 10 to electrically connect the conductive layers of the two single battery cells 20.

[0055] In this embodiment, the connection method of the stacked battery pack with multiple battery packs can also be directly connected using the conductive connector 50, that is, after the single cell 20 in the cutting area is cut out from the battery substrate 10, the conductive connector 50 is arranged in the mounting groove 11 or the connecting hole 13 in the battery pack to achieve connection and conduction between the single cells 20, thereby improving another conduction method of the single cells 20 inside the battery pack.

[0056] In an embodiment of the present invention, the shape of the single battery cell 20 is a rectangle, a circle, a triangle or an ellipse.

[0057] In the present application, the shape of the multiple single battery cells 20 can be square, circular, triangular or elliptical. The shape of the multiple single battery cells 20 can also be fan-shaped, pentagonal, trapezoidal, etc., and the shape of the multiple single battery cells 20 can be the same, or a combination of multiple different shapes according to actual conditions, which is not limited here.

[0058] In an embodiment of the present invention, the shapes of the plurality of single battery cells 20 are the same, and the areas of the plurality of single battery cells 20 are the same.

[0059] Furthermore, the plurality of single cells 20 are of the same shape, and the plurality of single cells 20 have the same area. Using single cells 20 of the same shape and the same area makes the single cells 20 of the battery pack uniform. The single cells 20 of the battery pack are uniform, and single cells 20 of the same type can be assembled into a battery pack, and single cells 20 of multiple different shapes can be adapted to smart devices of different shapes, thereby improving the adaptability of the battery pack.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A planar spliced ​​battery pack, characterized in that: include: A battery substrate (10), wherein a plurality of single cells (20) are printed and overlapped in the battery substrate (10), the plurality of single cells (20) are arranged at intervals, and a mounting groove (11) is provided on the surface of the battery substrate (10) between two adjacent single cells (20); and A plurality of conductive members (30), wherein one conductive member (30) can be selectively disposed in one of the mounting grooves (11) to connect conductive layers of two adjacent single battery cells (20) located in the mounting groove (11); The battery substrate (10) is located on a plurality of the conductive single battery cells (20) and encloses them to form a cutting area.

2. The planar splicing battery pack according to claim 1, characterized in that: The conductive member (30) can be detachably connected or directly printed and connected to the installation groove (11).

3. The planar splicing battery pack according to claim 2, characterized in that: The conductive member (30) comprises a first conductive part (31) and a second conductive part (33); the first conductive part (31) and the second conductive part (33) are inserted side by side in the installation groove (11) to electrically connect the conductive layers of two adjacent single cells (20) respectively.

4. The planar splicing battery pack according to claim 3, characterized in that: The planar spliced ​​battery pack further comprises an insulating member (40), wherein the insulating member (40) is detachably installed in the conductive member (30) to separate the conductive member (30) into two parts.

5. The planar splicing battery pack according to any one of claims 1 to 4, characterized in that: The conductive member (30) is a carbon rod, a solid conductive glue or a conductive metal.

6. The planar splicing battery pack according to any one of claims 1 to 4, characterized in that: The two single battery cells (20) are arranged to overlap in the thickness direction, and two ends of a conductive member (30) are electrically connected to the mounting grooves (11) of the two single battery cells (20) respectively.

7. The planar spliced ​​battery pack according to any one of claims 1 to 4, characterized in that: The battery substrate (10) is further provided with a connection hole (13), the connection hole (13) extending to the conductive layer of the single battery cell (20), the two single battery cells (20) being arranged overlapping in the thickness direction, and the two ends of a conductive member (30) respectively passing through the connection holes (13) of the two battery substrates (10) and electrically connecting the conductive layers of the two single battery cells (20).

8. The planar splicing battery pack according to claim 7, characterized in that: The planar spliced ​​battery pack also includes a conductive connector (50), and a plurality of the battery substrates (10) are cut and relatively overlapped or arranged in parallel, and two ends of the conductive connector (50) are respectively inserted into the mounting grooves (11) or the connection holes (13) of the two battery substrates (10) to electrically connect the conductive layers of the two single battery cells (20).

9. The planar spliced ​​battery pack according to any one of claims 1 to 4, characterized in that: The shape of the single battery cell (20) is one of a rectangle, a circle, a triangle or an ellipse.

10. The planar spliced ​​battery pack according to claim 9, characterized in that: The shapes of the plurality of single battery cells (20) are the same, and the areas of the plurality of single battery cells (20) are the same.

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