Cylindrical extremely-simple lithium ion storage battery pack for space

Abstract

The invention relates to a cylindrical extremely-simple lithium ion storage battery pack for space, which is characterized in that a plurality of first support columns are positioned between an upper pressing plate and a lower pressing plate and are inserted into grooves of the two pressing plates to realize structural support; the plurality of storage battery monomers are fixed between the upper pressing plate and the lower pressing plate; the connecting strips are connected with the anodes and the cathodes of the plurality of storage battery monomers through electric resistance welding, so that the plurality of storage battery monomers are connected in series and in parallel; the adapter bar is connected with the connecting strip, the crimping terminal and the pressing plate through fasteners, so that the connecting strip is electrically connected with the crimping terminal; a plurality of leads are crimped on the crimping terminals and lead to an electric connector of the storage battery pack, so that power output and voltage sampling are realized; the second supporting column is limited on the pressing plate above the second supporting column through the groove, connection between the pressing plate and the supporting plate is achieved, and it is guaranteed that gaps between the pressing plate and the supporting plate are used for distribution of the switching rods, the connecting strips, the crimping terminals and the wires. According to the invention, the lightweight and simplified design of the storage battery pack for space is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of battery design and relates to a cylindrical minimalist lithium-ion battery pack for space use. Background Art

[0002] As the energy storage power source of space vehicles, batteries are responsible for providing power to the spacecraft when there is no light and are an important component of the spacecraft.

[0003] Although the traditional rod-type, module-type and box-type battery pack structures have many advantages such as high mechanical strength, good thermal conductivity and high reliability, aircraft, especially small aircraft, have continuously put forward requirements for onboard products to be lightweight, small in size and low in cost, and traditional battery pack structures are increasingly unable to meet these requirements. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a cylindrical minimalist lithium-ion battery pack for space use, and to achieve lightweight and simplified design of the battery pack for space use.

[0005] The technical solution of the present invention is: a cylindrical minimalist lithium-ion battery pack for space use, comprising a battery cell, a connecting bar, a pressing plate, a first supporting column, a second supporting column, a transfer rod, a supporting plate, a crimping terminal, a wire, and an electrical connector; the pressing plate and the supporting plate are circular structures of the same size;

[0006] A plurality of first support columns are located between the upper and lower pressure plates and inserted into the grooves of the two pressure plates to achieve structural support; a plurality of storage battery cells are fixed between the upper and lower pressure plates;

[0007] The connecting strip is connected to the positive and negative electrodes of multiple battery cells by resistance welding to realize series and parallel connection of multiple battery cells;

[0008] The adapter rod is connected to the connecting strip, the crimping terminal and the pressing plate through fasteners to realize the electrical connection between the connecting strip and the crimping terminal; a number of wires are crimped on the crimping terminal, and the wires lead to the electrical connector of the battery pack to realize power output and voltage sampling;

[0009] The second support column is limited on the upper pressing plate through the groove, so as to realize the connection between the pressing plate and the supporting plate and ensure that the gap between the pressing plate and the supporting plate is used for the distribution of the transfer rod, the connecting strip, the crimping terminal and the wire.

[0010] Furthermore, it also includes a socket frame installed on the support plate for fixing the electrical connector.

[0011] Furthermore, the battery cell is a cylindrical battery cell.

[0012] Furthermore, the support plate and the socket frame are made of aluminum alloy or magnesium alloy.

[0013] Furthermore, the first support column is made of stainless steel or aluminum alloy.

[0014] Furthermore, the second support column and the pressing plate are made of polyimide or epoxy glass laminate material.

[0015] Furthermore, the connecting strip is made of nickel material.

[0016] Furthermore, the transfer rod is made of copper.

[0017] Furthermore, the pressing plate is made of insulating material.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] Compared with the prior art, the present invention can form a cylindrical minimalist lithium-electronic battery pack by adopting battery cells, connecting strips, pressure plates, first support columns, second support columns, adapter rods, support plates, etc. It has a light structure, compact layout, simple processing, few types of parts, easy assembly, good maintainability, low production cost, high space utilization, and is particularly suitable for aircraft with arc-shaped installation spaces such as rocket-borne power supplies and missile-borne power supplies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 1 is a structural diagram of a cylindrical minimalist battery pack according to an embodiment of the present invention.

[0021] Attached Figure 2 It is a side view of a cylindrical minimalist battery pack according to an embodiment of the present invention.

[0022] Attached Figure 3 It is a partial enlarged view of a cylindrical minimalist battery pack according to an embodiment of the present invention.

[0023] Attached Figure 4 Schematic diagram of electrical connection of a cylindrical minimalist battery pack according to an embodiment of the present invention.

[0024] Attached Figure 5 FIG. 4 is a discharge curve diagram of a cylindrical minimalist battery pack according to an embodiment of the present invention.

[0025] Among them: 1-support plate; 2-second support column; 3-pressing plate; 4-first support column; 5-battery cell; 6-electric connector; 7-socket rack; 8-adapter rod; 9-connecting bar; 10-mounting hole; 11-nut; 12-spring washer; 13-flat washer; 14-crimping terminal; 15-wire. DETAILED DESCRIPTION

[0026] The present invention provides a cylindrical minimalist lithium-ion battery pack for space use, such as Figure 1 to Figure 4 As shown, it includes a battery cell 5, a connecting strip 9, a pressing plate 3, a first supporting column 4, a second supporting column 2, a switching rod 8, a supporting plate 1, a crimping terminal 14, a wire 15, and an electrical connector 6; the pressing plate 3 and the supporting plate 1 are circular structures of the same size.

[0027] A plurality of first support columns 4 are located between the upper and lower pressing plates 3 and inserted into the grooves of the two pressing plates 3 to achieve structural support; a plurality of storage battery cells 5 are fixed between the upper and lower pressing plates 3;

[0028] The connecting bar 9 is connected to the positive and negative electrodes of the multiple battery cells 5 by resistance welding, so that the multiple battery cells 5 are connected in series and in parallel;

[0029] The adapter rod 8 is connected to the connecting strip 9, the crimping terminal 14, and the pressing plate 3 through fasteners to realize the electrical connection between the connecting strip 9 and the crimping terminal 14; a plurality of wires 15 are crimped on the crimping terminal 14, and the wires 15 lead to the electrical connector 6 of the battery pack to realize functions such as power output and voltage sampling.

[0030] The second support column 2 is limited on the upper pressing plate 3 through the groove, so as to realize the connection between the pressing plate 3 and the supporting plate 1, and ensure that the gap between the pressing plate 3 and the supporting plate 1 is used for the distribution of the transfer rod 8, the connecting strip 9, the crimping terminal 14 and the wire 15;

[0031] The second support column 2, the pressure plate 3, the first support column 4 and the support plate 1 are mechanically connected by means of screws.

[0032] The cylindrical minimalist lithium-ion battery pack for space use can also be equipped with a socket bracket 7 on the support plate 1 for fixing the electrical connector 6 .

[0033] Furthermore, in the cylindrical minimalist lithium-ion battery pack for space use: the battery cell 5 is a cylindrical battery cell, such as a 18650 lithium-ion battery cell or a 21700 lithium-ion battery cell.

[0034] Furthermore, in the space-use cylindrical minimalist lithium-ion battery pack: the support plate 1 and the socket frame 7 are made of aluminum alloy or magnesium alloy material.

[0035] Furthermore, in the space-use cylindrical minimalist lithium-ion battery pack: the first support column 4 is made of stainless steel or aluminum alloy.

[0036] Furthermore, in the cylindrical minimalist lithium-ion battery pack for space use: the second support column 2 and the pressure plate 3 are made of polyimide or epoxy glass laminate material.

[0037] Furthermore, in the cylindrical minimalist lithium-ion battery pack for space use: the connecting strip 9 is made of nickel material.

[0038] Furthermore, in the cylindrical minimalist lithium-ion battery pack for space use: the adapter rod 8 is made of copper material.

[0039] Furthermore, in the space-use cylindrical minimalist lithium-ion battery pack: the pressure plate 3 is made of insulating material, which can provide insulation protection for the battery cells 5; the pressure plate 3 limits and fixes the battery cells 5 through the grooves.

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] Example 1

[0042] The upper and lower pressing plates 3 of the battery pack in this embodiment each have 24 grooves for battery cells 5 of the same shape and size, and the grooves are evenly coated with thermal conductive silicone for mounting the 24 battery cells 5. The size of the pressing plate 3 and the number of grooves can be changed according to the power requirements of the aircraft, and the size of the support plate 1, the number of support columns, the connecting bars 9 and the adapter rods 8 can be changed accordingly, so as to be used for battery packs with different series and parallel configurations.

[0043] The two pressing plates 3 of the battery pack each have 24 first support column grooves of the same shape and size, which are used to install 24 first support columns 4. The two pressing plates 3 each have 12 second support column grooves of the same shape and size, which are used to install 12 second support columns 2. The two pressing plates 3 each have 8 adapter rod grooves of the same shape and size, which are used to install a number of adapter rods 8, which can be adjusted according to the needs of the battery pack. The support plate 1, the second support column 2, the pressing plate 3, and the first support column 4 are reliably mechanically connected by screws.

[0044] The battery cells 5 in the battery pack are connected to the connecting strips 9 by resistance welding, and the connecting strips 9 and the crimping terminals 14 are reliably electrically connected by nuts 11, spring washers 12, and flat washers 13. A plurality of wires 15 are crimped on the crimping terminals 14 and connected to the electrical connector 6 to realize functions such as power output and voltage sampling. The battery pack electrical connector 6 is installed on the socket rack 7, or the socket rack 7 is removed, and the electrical connector 6 is directly connected to the aircraft cable.

[0045] like Figure 1 to Figure 4 As shown, the adapter rod 8, the battery cell 5, and the first support column 4 can be first inserted into the corresponding grooves on the upper and lower pressure plates 3, and the first support column 4 can be fastened with screws; then the connecting strip 9 is welded to the positive and negative electrodes of the corresponding battery cell 5 by resistance welding, and the crimping terminal 14 with the wire 15 crimped is fixed to the adapter rod 8 with the nut 11, spring washer 12, and flat washer 13; the adapter rod 8 is fixed to the pressure plate 3 through the hole opened on the connecting strip 9; then the support plate 1 and the second support column 2 are installed on the upper pressure plate 3; and then the socket frame 7 is installed on the support plate 1.

[0046] Attached Figure 5 The discharge curve of the cylindrical minimalist lithium-ion battery pack for space use assembled by the present invention.

[0047] In summary, the cylindrical minimalist lithium-ion battery pack for space use of the present invention has the following characteristics:

[0048] 1) The cylindrical minimalist lithium-ion battery pack is more adaptable to arc-shaped installation spaces such as arrow-borne power supplies and missile-borne power supplies, has higher utilization rates in narrow spaces, and has better mechanical resistance than civilian cylindrical structures.

[0049] 2) Simple structure. The cylindrical minimalist lithium-ion battery pack has only the main structural frame consisting of the pressing plate 3, the supporting plate 1, the first supporting column 4 and the second supporting column 2, which are connected to each other by grooves and screws, and have high mechanical strength. The structure is light and compact, with high mass-to-energy and volume-to-energy ratios, which meets the requirements of lightweight design of aircraft. It is also easy to assemble and suitable for mass production.

[0050] 3) Good maintainability. The cylindrical minimalist lithium-ion battery pack has a simple structure and all parts are of universal design. Whether the battery cell 5 is damaged or the performance is degraded, or the parts need to be replaced, the screws of the fixed pressure plate 3, the support plate 1, the first support column 4 and the second support column 2 can be removed, and then the cell or the parts can be replaced and reinstalled. Compared with the pull rod type, modular type or box type structure, the cylindrical minimalist structure greatly simplifies disassembly and reassembly, has good maintainability, and has lower time and labor costs for rework and repair.

[0051] 4) High installation precision. The installation hole 10 of the cylindrical minimalist lithium-ion battery pack is on the support plate 1. The installation size and the position of the installation hole 10 are determined by the support plate 1 and can be ensured by parts processing. The precision of the installation size is controllable.

[0052] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0053] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A cylindrical minimalist lithium-ion battery pack for space use, characterized in that: It comprises a battery cell (5), a connecting strip (9), a pressing plate (3), a first supporting column (4), a second supporting column (2), a switching rod (8), a supporting plate (1), a crimping terminal (14), a wire (15), and an electrical connector (6); the pressing plate (3) and the supporting plate (1) are circular structures with the same size; A plurality of first support columns (4) are located between the upper and lower pressing plates (3) and inserted into the grooves of the two pressing plates (3) to achieve structural support; a plurality of storage battery cells (5) are fixed between the upper and lower pressing plates (3); The connecting bar (9) is connected to the positive and negative electrodes of a plurality of storage battery cells (5) by resistance welding, thereby realizing series and parallel connection of the plurality of storage battery cells (5); The adapter rod (8) is connected to the connecting strip (9), the crimping terminal (14) and the pressing plate (3) by means of fasteners, thereby realizing electrical connection between the connecting strip (9) and the crimping terminal (14); a plurality of wires (15) are crimped onto the crimping terminal (14), and the wires (15) are connected to the electrical connector (6) of the storage battery pack, thereby realizing power output and voltage sampling; The second support column (2) is limited on the upper pressing plate (3) through the groove, so as to realize the connection between the pressing plate (3) and the supporting plate (1), and ensure that the gap between the pressing plate (3) and the supporting plate (1) is used for the distribution of the transfer rod (8), the connecting strip (9), the crimping terminal (14) and the wire (15).

2. A cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: It also includes a socket frame (7) installed on the support plate (1) and used to fix the electrical connector (6).

3. A cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The battery cell (5) is a cylindrical battery cell.

4. A cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The support plate (1) and the socket frame (7) are made of aluminum alloy or magnesium alloy.

5. The cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The first support column (4) is made of stainless steel or aluminum alloy.

6. A cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The second support column (2) and the pressing plate (3) are made of polyimide or epoxy glass laminate material.

7. The cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The connecting strip (9) is made of nickel.

8. The cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The transfer rod (8) is made of copper.

9. The cylindrical minimalist lithium-ion battery pack for space use according to claim 1, characterized in that: The pressing plate (3) is made of insulating material.

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