Cylindrical battery assembly and energy storage power supply

Abstract

The utility model discloses a cylindrical battery assembly and an energy storage power supply, and belongs to the technical field of batteries. The cylindrical battery assembly comprises a plurality of cylindrical batteries, at least one electric connecting piece and at least one first insulating part. The cylindrical battery comprises end faces, and the end faces comprise the first end face and the second end face. The cylindrical batteries are electrically connected through the electric connecting sheet; the first insulating part is partially or completely arranged between the plane where the first end face is located and the plane where the electric connecting piece is located, the first insulating part is provided with a first through hole, and the first through hole is used for providing a connecting space for the cylindrical battery and the electric connecting piece. According to the cylindrical battery assembly provided by the invention, the insulation protection effect on the cylindrical battery can be effectively improved, and the probability of short circuit of the cylindrical battery in use is reduced, so that the safety is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cylindrical battery assembly and an energy storage power supply. Background Art

[0002] As people's living standards continue to improve, in order to meet people's demand for outdoor electricity, people often bring outdoor energy storage power supplies when they go out for outdoor activities. The outdoor energy storage power supply is equipped with cylindrical batteries for storing electrical energy, and has multiple output ports for different devices to draw power, which can meet people's basic needs for outdoor electricity or emergency electricity.

[0003] At present, the cylindrical batteries of outdoor energy storage power sources on the market are covered with a thin layer of heat shrink film outside the steel shell to provide insulation protection and prevent short circuits. However, during the subsequent processing, testing, transportation and long-term use of cylindrical batteries covered with heat shrink film, the heat shrink film is inevitably damaged, which may cause short circuits in cylindrical batteries during use, which may be dangerous. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a cylindrical battery assembly.

[0005] To solve the above technical problems, this application provides:

[0006] A cylindrical battery assembly includes a plurality of cylindrical batteries, wherein the cylindrical batteries include end faces, wherein the end faces include a first end face and a second end face; at least one electrical connection sheet, through which the cylindrical batteries are electrically connected; and at least one first insulating member, wherein part or all of the first insulating member is disposed between a plane where the first end face is located and a plane where the electrical connection sheet is located, and the first insulating member has a first through hole, and the first through hole is used to provide a connection space between the cylindrical battery and the electrical connection sheet.

[0007] In addition, the cylindrical battery assembly according to the present application may also have the following additional technical features:

[0008] In some embodiments of the present application, the entire first insulating member is arranged between the plane where the first end face is located and the plane where the electrical connecting piece is located, the outer edge of the first insulating member is circular, and the first insulating member basically covers or completely covers the outer edge of the first end face.

[0009] In some embodiments of the present application, the cylindrical battery is provided with a first electrode on one side of the first end surface, and the shape of the first through hole matches the shape of the first electrode.

[0010] In some embodiments of the present application, an adhesive layer is provided on a side of the first insulating member facing the first end surface.

[0011] In some embodiments of the present application, the entire first insulating member is disposed between a plane where the first end face is located and a plane where the electrical connecting piece is located, and the first insulating member includes at least two first through holes, and one first through hole corresponds to one first end face.

[0012] In some embodiments of the present application, the first insulating member includes at least one first connecting portion and at least two main body portions, the main body portion has the first through hole, the first connecting portion is used for connection between the main body portions, and the outer edge shape of the portion of the main body portion not connected to the first connecting portion matches the outer edge shape of the first end face.

[0013] In some embodiments of the present application, an adhesive layer is provided on a side of the main body facing the first end surface.

[0014] In some embodiments of the present application, a circuit board is also included, and the entire first insulating member is arranged between the plane where the first end surface is located and the plane where the electrical connecting piece is located, the circuit board is electrically connected to the electrical connecting piece, and the circuit board is fixed to one side of the cylindrical battery through the electrical connecting piece.

[0015] In some embodiments of the present application, a heat insulating member is further included, and the heat insulating member is disposed between the circuit board and the cylindrical battery.

[0016] In some embodiments of the present application, the thermal insulation member is within the circuit board area.

[0017] In some embodiments of the present application, a buffer member is further included, and the buffer member is arranged between the thermal insulation member and the cylindrical battery and within the thermal insulation member area.

[0018] In some embodiments of the present application, the first insulating member is provided with a plurality of first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves face the side surfaces of the cylindrical batteries, a first side plate is provided on one side of the first accommodating grooves, the first side plate is provided with the first through hole at each of the first accommodating grooves, and the first side plate is provided between the plane where the first end face is located and the plane where the electrical connecting sheet is located.

[0019] In some embodiments of the present application, the first insulating member includes a second side plate arranged opposite to the first side plate, the first accommodating groove is between the first side plate and the second side plate, the second side plate is provided with the first through hole at each of the first accommodating grooves, and the first side plate and the second side plate are both arranged between the plane where the first end face is located and the plane where the electrical connecting plate is located.

[0020] In some embodiments of the present application, the first through hole of the first side plate and the first through hole of the second side plate have the same diameter and are centrally symmetrical.

[0021] In some embodiments of the present application, the first side plate has a second receiving groove on a side away from the cylindrical battery, and the second receiving groove is used to receive the electrical connection sheet.

[0022] In some embodiments of the present application, at least one second insulating member is further included to cover the electrical connection sheet.

[0023] In some embodiments of the present application, the second insulating member is received in the second receiving groove.

[0024] In some embodiments of the present application, the first side plate is provided with at least one second connection portion on a side away from the cylindrical battery for installing a heat dissipation fan.

[0025] In some embodiments of the present application, the first insulating member is provided with a plurality of first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves are facing the end faces of the cylindrical batteries, the first insulating member is provided with a limiting portion at one end of the first accommodating grooves, the limiting portion has the first through hole, and the limiting portion is arranged between the plane where the first end face is located and the plane where the electrical connecting sheet is located.

[0026] In some embodiments of the present application, the plurality of first containing grooves are in a honeycomb or matrix shape.

[0027] In some embodiments of the present application, a circuit board is further included, and the first insulating member is provided with a third connecting portion for connecting to the circuit board.

[0028] In some embodiments of the present application, the limiting portion is in a mesh shape.

[0029] In some embodiments of the present application, the limiting portion is provided with a first groove at the first through hole, so as to avoid the liquid injection hole of the cylindrical battery.

[0030] In some embodiments of the present application, the first insulating member is provided with a plurality of protrusions on a side away from the cylindrical battery, and the protrusions and the limiting portion form a second receiving groove, and the second receiving groove is used to receive the electrical connecting sheet.

[0031] In some embodiments of the present application, the protrusion is provided with a second through hole.

[0032] In some embodiments of the present application, the first insulating member has a first surface and a second surface, the first accommodating groove passes through the first surface and the second surface, the limiting portion includes a transition portion and a supporting portion, the transition portion is connected to the first surface, and the supporting portion is used to support the cylindrical battery.

[0033] In some embodiments of the present application, there is a gap between the support portion and the first surface.

[0034] In some embodiments of the present application, the height of the gap is 0.4 mm to 0.7 mm.

[0035] In some embodiments of the present application, the first insulating member includes a first shell and a second shell, the first shell and the second shell form a accommodating space, and are respectively provided with a plurality of corresponding first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves face the end faces of the cylindrical batteries, the first shell and the second shell are respectively provided with limiting portions at one end of the first accommodating grooves, the limiting portions have the first through hole, and the limiting portions are arranged between the plane where the first end face is located and the plane where the electrical connecting sheet is located.

[0036] In some embodiments of the present application, the first shell and the second shell are provided with a plurality of protrusions on a side away from the cylindrical battery, and the protrusions and the limiting portion form a second receiving groove, and the second receiving groove is used to receive the electrical connecting sheet.

[0037] In some embodiments of the present application, the protrusion is provided with a second through hole, the first shell is provided with a fourth connecting portion at a side of part of the second through hole facing the cylindrical battery, and the second shell is provided with a fifth connecting portion for connecting the fourth connecting portion.

[0038] In some embodiments of the present application, the electrical connecting sheet includes at least two electrical connecting sheet units and a sixth connecting portion, the electrical connecting sheet units are connected through the sixth connecting portion, the electrical connecting sheet unit includes a hollow portion, a first electrical connecting portion and a second electrical connecting portion, and the hollow portion separates the first electrical connecting portion and the second electrical connecting portion.

[0039] In some embodiments of the present application, the hollow portion has one or more structures of a straight line shape, an I shape, a cross shape, a Z shape, an S shape, and an H shape.

[0040] In some embodiments of the present application, the width of the hollow portion is 0.5 mm to 1.5 mm.

[0041] In some embodiments of the present application, the electrical connection sheet unit has one or more of a first arc-shaped structure, a second arc-shaped structure, or a square structure.

[0042] In some embodiments of the present application, the electrical connection sheet unit has a first arc-shaped structure, and a diameter of the first arc-shaped structure is smaller than a diameter of the cylindrical battery.

[0043] In some embodiments of the present application, the electrical connection sheet unit has a first arc-shaped structure, and a diameter of the first arc-shaped structure is 6 mm to 8 mm smaller than a diameter of the cylindrical battery.

[0044] In some embodiments of the present application, the electrical connection sheet unit has a square structure, and the sixth connection portion has a square structure.

[0045] In some embodiments of the present application, the electrical connection sheet further includes a sampling portion.

[0046] In some embodiments of the present application, the width of the sampling portion is smaller than the width of the sixth connecting portion.

[0047] In some embodiments of the present application, the hollow portion has one or more structures of I-type, cross-type, and H-type, and the first electrical connection portion and / or the second electrical connection portion has a bending portion.

[0048] In some embodiments of the present application, the electrical connection piece on the first insulating member is within the first insulating member region.

[0049] In some embodiments of the present application, the cylindrical battery includes a first electrode and a second electrode, the sixth connecting portion includes a series segment and a parallel segment, the series segment is used for electrical connection between the first electrode and the second electrode, the parallel segment is used for electrical connection between the first electrodes, and the width of the series segment is greater than the width of the parallel segment.

[0050] In some embodiments of the present application, the ratio of the width of the series segment to the width of the parallel segment is 1.5 to 7.

[0051] In a second aspect, an embodiment of the present application further provides an energy storage power source, comprising a housing and the cylindrical battery assembly described in any of the above embodiments, wherein the cylindrical battery assembly is disposed in the housing.

[0052] Compared with the prior art, the beneficial effects of this application are:

[0053] The present application proposes a cylindrical battery assembly, which includes a plurality of cylindrical batteries, at least one electrical connection sheet and at least one first insulating member. The cylindrical battery has a first end face and a second end face arranged opposite to each other. The plurality of cylindrical batteries are electrically connected through the electrical connection sheet to achieve series connection and parallel connection, so as to improve the voltage, current and capacity of the cylindrical battery assembly. By partially or completely disposing the first insulating member between the plane where the first end face is located and the plane where the electrical connection sheet is located, the insulating protection effect of the cylindrical battery can be further improved on the basis of the insulating protection of the heat shrink film, and the probability of short circuit of the cylindrical battery during use is reduced, thereby improving safety. By opening a first through hole on the first insulating member to provide a connection space for the cylindrical battery and the electrical connection sheet, it is convenient for the electrical connection sheet to contact the electrode of the cylindrical battery to achieve electrical connection, and then multiple cylindrical batteries are electrically connected through the electrical connection sheet to achieve series connection and parallel connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 Shows the explosion diagram of a cylindrical battery assembly in some embodiments of the present application Figure 1 ;

[0056] Figure 2 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 1 ;

[0057] Figure 3 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 2 ;

[0058] Figure 4 A three-dimensional schematic diagram of an electrical connection sheet in some embodiments of the present application is shown. Figure 1 ;

[0059] Figure 5 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 3 ;

[0060] Figure 6 Shows the explosion diagram of a cylindrical battery assembly in some embodiments of the present application Figure 2 ;

[0061] Figure 7 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 4 ;

[0062] Figure 8 A three-dimensional schematic diagram of an electrical connection sheet in some embodiments of the present application is shown. Figure 2 ;

[0063] Fig. 9 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 5 ;

[0064] Fig.10 Shows the explosion diagram of a cylindrical battery assembly in some embodiments of the present application Figure 3 ;

[0065] Fig.11 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 6 ;

[0066] Fig.12 Shows Fig.11 A magnified schematic diagram of the structure of the middle A section;

[0067] Fig.13 A three-dimensional schematic diagram of the first insulating member in some embodiments of the present application is shown. Figure 1 ;

[0068] Fig.14 A three-dimensional schematic diagram of the first insulating member in some embodiments of the present application is shown. Figure 2 ;

[0069] Fig.15 A three-dimensional schematic diagram of an electrical connection sheet in some embodiments of the present application is shown. Figure 3 ;

[0070] Fig.16 A three-dimensional schematic diagram of a cylindrical battery assembly in some embodiments of the present application is shown. Figure 7 ;

[0071] Fig.17 Shows Fig.13 A magnified schematic diagram of the structure of the middle B section;

[0072] Fig.18 Shows Fig.10 An enlarged schematic diagram of the structure of the middle C section;

[0073] Fig.19 Shows Fig.18 Schematic cross-sectional view of .

[0074] Description of main component symbols:

[0075] 100-cylindrical battery assembly; 110-cylindrical battery; 111-first end face; 112-second end face; 113-first electrode; 114-liquid injection hole; 115-second electrode; 120-electrical connecting piece; 121-electrical connecting piece unit; 1211-hollow portion; 1212-first electrical connecting portion; 1213-second electrical connecting portion; 1214-bending portion; 122-sixth connecting portion; 1221-series section; 1222-parallel section; 123-sampling portion; 124-first arc-shaped structure; 125-square structure; 126-second arc-shaped structure; 130-first insulating member; 131-first through hole; 132-first connecting portion; 133-main body; 134-first accommodating groove; 13 41-first side plate; 13411-second accommodating groove; 13412-second connecting portion; 1342-second side plate; 1343-limiting portion; 13431-first groove; 13432-adapting portion; 13433-supporting portion; 13434-first surface; 13435-second surface; 136-protrusion; 1361-second through hole; 1371-first shell; 13711-fourth connecting portion; 1372-second shell; 13721-fifth connecting portion; 1373-accommodating space; 138-third connecting portion; 140-circuit board; 150-second insulating member; 160-cooling fan; 170-heat insulating member; 180-buffer member; 1000-energy storage power supply; 200-shell. DETAILED DESCRIPTION

[0076] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0080] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] like Figure 1 As shown, the embodiment of the present application provides a cylindrical battery assembly 100, which is mainly used in an energy storage power supply 1000. The cylindrical battery assembly 100 includes a plurality of cylindrical batteries 110, at least one electrical connection sheet 120 and at least one first insulating member 130.

[0082] See also Figure 2 and Figure 3 , wherein the cylindrical battery 110 includes an end face, the end face includes a first end face 111 and a second end face 112, and the cylindrical battery 110 is electrically connected through the electrical connection sheet 120. Part or all of the first insulating member 130 is disposed between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, and the first insulating member 130 has a first through hole 131, and the first through hole 131 is used to provide a connection space between the cylindrical battery 110 and the electrical connection sheet 120, and can effectively isolate the electrical connection sheet 120 from the first end face 111 or the second end face 112 of the cylindrical battery 110.

[0083] In the cylindrical battery assembly 100 provided in the embodiment of the present application, a plurality of cylindrical batteries 110 are electrically connected in series and in parallel through the electrical connection sheet 120 to improve the voltage, current and capacity of the cylindrical battery assembly 100. By partially or completely arranging the first insulating member 130 between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, the insulation protection effect of the cylindrical battery 110 can be further improved on the basis of the insulation protection of the heat shrink film, and the probability of short circuit of the cylindrical battery 110 during use is reduced, thereby improving safety.

[0084] A first through hole 131 is formed on the first insulating member 130 to provide a connection space between the cylindrical battery 110 and the electrical connection sheet 120, thereby facilitating the electrical connection sheet 120 to contact and electrically connect the electrodes of the cylindrical battery 110, thereby enabling multiple cylindrical batteries 110 to be electrically connected in series and in parallel through the electrical connection sheet 120.

[0085] Exemplarily, the electrical connection sheet 120 may be made of a conductive metal material, such as copper, aluminum, silver, etc., and the first insulating member 130 may be highland barley paper with strong high temperature resistance and strong insulation.

[0086] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of the present application, optionally, the entire first insulating member 130 is disposed between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, the outer edge of the first insulating member 130 is circular, and the first insulating member 130 substantially covers or completely covers the outer edge of the first end face 111. Thus, by disposing the entire first insulating member 130 between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, and substantially covering or completely covering the outer edge of the first end face 111, the insulation protection effect of the cylindrical battery 110 is further improved, the probability of a short circuit of the cylindrical battery 110 during use is further reduced, and thus the safety is further improved. The outer edge of the first insulating member 130 is circular to match the outer edge of the first end face 111 of the cylindrical battery 110.

[0087] like Figure 1 and Figure 3 As shown, in the above embodiment of the present application, optionally, the cylindrical battery 110 is provided with a first electrode 113 on one side of the first end face 111, and the shape of the first through hole 131 matches the shape of the first electrode 113. Thus, on the one hand, it plays a role in avoiding the first electrode 113 to provide a connection space for the electrical connection sheet 120 and the first electrode 113, and on the other hand, it can maximize the coverage of the first end face 111, thereby maximizing the insulation protection effect of the cylindrical battery 110. Exemplarily, the first electrode 113 can be a positive electrode column.

[0088] In the above embodiment of the present application, optionally, an adhesive layer is provided on the side of the first insulating member 130 facing the first end face 111. Thus, the first insulating member 130 is firmly arranged on the first end face 111 through the adhesive layer, which improves the installation stability of the first insulating member 130, thereby ensuring the stability of the insulation protection effect of the cylindrical battery 110. Exemplarily, the first insulating member 130 is a single-sided adhesive backing of highland barley paper, and the adhesive backing surface can be directly adhered to the first end face 111 or the second end face 112 of the cylindrical battery 110.

[0089] like Figure 1 and Figure 3 As shown, in one embodiment of the present application, optionally, all of the first insulating member 130 is disposed between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, and the first insulating member 130 includes at least two first through holes 131, and one first through hole 131 corresponds to one first end face 111. Thus, two or more cylindrical batteries 110 share one first insulating member 130, thereby effectively improving the installation efficiency of the first insulating member 130.

[0090] like Figure 1 and Figure 3 As shown, in the above embodiment of the present application, optionally, the first insulating member 130 includes at least one first connecting portion 132 and at least two main body portions 133, the main body portion 133 has the first through hole 131, the first connecting portion 132 is used for connection between the main body portions 133, and the outer edge shape of the portion of the main body portion 133 not connected to the first connecting portion 132 matches the outer edge shape of the first end face 111. Thus, by providing at least one connecting portion and at least two main body portions 133, one main body portion 133 corresponds to the first end face 111 of a cylindrical battery 110, so that each first insulating member 130 can be provided on at least two cylindrical batteries 110, thereby effectively improving the installation efficiency. By providing the outer edge shape of the portion of the main body portion 133 not connected to the first connecting portion 132 to match the outer edge shape of the first end face 111, the first end face 111 can be covered to the maximum extent, thereby maximizing the insulation protection effect on the cylindrical battery 110.

[0091] In the above embodiment of the present application, optionally, an adhesive layer is provided on the side of the main body 133 facing the first end face 111. Thus, the main body 133 is stably disposed on the first end face 111 through the adhesive layer, so that the first insulating member 130 is stably disposed on the first end face 111 as a whole, thereby improving the installation stability of the first insulating member 130, thereby ensuring the stability of the insulation protection effect on the cylindrical battery 110.

[0092] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of the present application, optionally, a circuit board 140 is further included, the first insulating member 130 is entirely disposed between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located, the circuit board 140 is electrically connected to the electrical connection sheet 120, and the circuit board 140 is fixed to one side of the cylindrical battery 110 through the electrical connection sheet 120. Thus, by electrically connecting the circuit board 140 fixed to one side of the cylindrical battery 110 with the electrical connection sheet 120, the charging and discharging functions of the cylindrical battery 110 are realized through the circuit board 140. Exemplarily, the circuit board 140 may be a battery management module.

[0093] like Figure 1 As shown, in the above embodiment of the present application, optionally, a heat insulating member 170 is further included, and the heat insulating member 170 is arranged between the circuit board 140 and the cylindrical battery 110. The heat insulating member 170 is within the circuit board 140 area. Therefore, by arranging the heat insulating member 170 between the circuit board 140 and the cylindrical battery 110, a heat insulating effect is achieved to prevent the heat generated by the cylindrical battery 110 from affecting the circuit board 140.

[0094] like Figure 1 As shown, in the above embodiment of the present application, optionally, a buffer 180 is further included, and the buffer 180 is arranged between the heat insulating member 170 and the cylindrical battery 110, and in the area of ​​the heat insulating member 170. Therefore, by arranging the buffer 180 located in the area of ​​the heat insulating member 170 between the heat insulating member 170 and the cylindrical battery 110, the buffer 180 plays a role in buffering and vibration reduction, thereby reducing the impact on the cylindrical battery 110 and the circuit board 140 during the mobile transportation process, which is conducive to extending the service life of the cylindrical battery 110 and the circuit board 140.

[0095] like Figure 5 , Figure 6 and Figure 7 As shown, in the above-mentioned embodiment of the present application, optionally, the first insulating member 130 is provided with a plurality of first accommodating grooves 134 for accommodating the cylindrical battery 110, the first accommodating grooves 134 face the side of the cylindrical battery 110, and a first side plate 1341 is provided on one side of the first accommodating groove 134, the first side plate 1341 is provided with the first through hole 131 at each of the first accommodating grooves 134, and the first side plate 1341 is provided between the plane where the first end face 111 is located and the plane where the electrical connecting piece 120 is located.

[0096] Thus, a plurality of first receiving grooves 134 for receiving cylindrical batteries 110 are provided on the side of the first insulating member 130 facing the cylindrical battery 110, so as to provide a receiving and installation space for the plurality of cylindrical batteries 110. A first side plate 1341 located between the plane where the first end face 111 is located and the plane where the electrical connection sheet 120 is located is provided on one side of the first receiving groove 134, and the first side plate 1341 is provided with a first through hole 131 at each first receiving groove 134, so as to provide a connection space for the cylindrical battery 110 and the electrical connection sheet 120, so as to facilitate the electrical connection sheet 120 to contact the electrodes of the cylindrical battery 110 to achieve electrical connection, and then the plurality of cylindrical batteries 110 are electrically connected through the electrical connection sheet 120 to achieve series and parallel connection, so as to improve the voltage, current and capacity of the cylindrical battery assembly 100.

[0097] like Figure 5 , Figure 6 and Figure 7 As shown, in the above-mentioned embodiment of the present application, optionally, the first insulating member 130 includes a second side plate 1342 arranged opposite to the first side plate 1341, the first accommodating groove 134 is between the first side plate 1341 and the second side plate 1342, the second side plate 1342 is provided with the first through hole 131 at each of the first accommodating grooves 134, and the first side plate 1341 and the second side plate 1342 are both arranged between the plane where the first end face 111 is located and the plane where the electrical connecting plate 120 is located.

[0098] Therefore, by arranging both the first side plate 1341 and the second side plate 1342 between the plane where the first end face 111 is located and the plane where the electrical connecting plate 120 is located, the insulation protection effect of the cylindrical battery 110 can be further improved on the basis of the insulation protection of the heat shrinkable film, thereby reducing the probability of short circuit of the cylindrical battery 110 during use, thereby improving safety.

[0099] The first side plate 1341 and the second side plate 1342 are provided with a first through hole 131 at each first receiving groove 134, so as to provide a connection space for the cylindrical battery 110 and the electrical connecting sheet 120, so as to facilitate the electrical connecting sheet 120 to contact the electrodes of the cylindrical battery 110 to achieve electrical connection, thereby enabling multiple cylindrical batteries 110 to be electrically connected in series and in parallel through the electrical connecting sheet 120.

[0100] like Figure 6 As shown, in the above embodiment of the present application, optionally, the first through hole 131 of the first side plate 1341 and the first through hole 131 of the second side plate 1342 have the same diameter and are centrally symmetrical. Thus, the electrical connection portion of the electrical connection sheet 120 can adopt a common shape to match the shapes of the positive and negative poles of the cylindrical battery 110, thereby improving versatility and facilitating improving the production efficiency of the electrical connection sheet 120.

[0101] like Figure 6 and Figure 7 As shown, in the above embodiment of the present application, optionally, the first side plate 1341 has a second receiving groove 13411 on a side away from the cylindrical battery 110, and the second receiving groove 13411 is used to receive the electrical connection sheet 120. Therefore, by providing the second receiving groove 13411 for receiving the electrical connection sheet 120 on the side of the first side plate 1341 away from the cylindrical battery 110, a receiving and installation space is provided for the electrical connection sheet 120.

[0102] like Figure 1 , Figure 5 and Figure 6 As shown, in the above-mentioned embodiment of the present application, optionally, at least one second insulating member 150 is further included for covering the electrical connection sheet 120. Thus, by providing a second insulating member 150 for covering the electrical connection sheet 120, the insulation protection effect can be further improved, the safety can be further improved, and the electrical connection sheet 120 can be prevented from contacting with the circuit board 140, the housing 200 or other components to cause leakage, short circuit and other problems. Exemplarily, the second insulating member 150 can be highland barley paper with strong high temperature resistance and strong insulation. The second insulating member 150 can also be a glass fiber board with strong high temperature resistance, strong insulation and high hardness, which can not only improve safety, but also play the role of supporting the cylindrical battery 110 as a whole, so that the cylindrical battery assembly 100 becomes a whole, which is convenient for installation as a whole, and effectively improves the installation efficiency and stability.

[0103] like Figure 5 and Figure 6 As shown, in the above embodiment of the present application, optionally, the second insulating member 150 is received in the second receiving groove 13411. Thus, the second insulating member 150 is received and installed.

[0104] like Figure 5 , Figure 6 and Figure 7 As shown, in the above embodiment of the present application, optionally, the first side plate 1341 is provided with at least one second connection portion 13412 on a side away from the cylindrical battery 110, for installing a heat dissipation fan 160. Thus, by providing at least one second connection portion 13412 on a side of the first side plate 1341 away from the cylindrical battery 110, the heat dissipation fan 160 is installed on the first side plate 1341 through the second connection portion 13412, thereby achieving the heat dissipation function of the cylindrical battery assembly 100, which is beneficial to prolonging the service life of the circuit board 140 and the cylindrical battery 110.

[0105] like Fig. 9 , Fig.10 , Fig.12and Fig.13 As shown, in one embodiment of the present application, optionally, the first insulating member 130 is provided with a plurality of first accommodating grooves 134 for accommodating the cylindrical battery 110, the first accommodating grooves 134 are facing the end faces of the cylindrical battery 110, and the first insulating member 130 is provided with a limiting portion 1343 at one end of the first accommodating groove 134, the limiting portion 1343 has the first through hole 131, and the limiting portion 1343 is arranged between the plane where the first end face 111 is located and the plane where the electrical connecting piece 120 is located.

[0106] Thus, a plurality of first receiving grooves 134 for receiving cylindrical batteries 110 are provided on the end surface of the first insulating member 130 facing the cylindrical battery 110, so as to provide a receiving and installation space for the plurality of cylindrical batteries 110. The limiting portion 1343 is provided between the plane of the first end surface 111 and the plane where the electrical connection sheet 120 is located, and the limiting portion 1343 is provided with a first through hole 131 at each first receiving groove 134, so as to provide a connection space for the cylindrical battery 110 and the electrical connection sheet 120, so as to facilitate the electrical connection of the electrical connection sheet 120 and the electrodes of the cylindrical battery 110 to contact and realize electrical connection, and then the plurality of cylindrical batteries 110 are electrically connected through the electrical connection sheet 120 to realize series and parallel connection, so as to improve the voltage, current and capacity of the cylindrical battery assembly 100.

[0107] like Fig.13 and Fig.14 As shown, in the above embodiment of the present application, optionally, the plurality of first receiving grooves 134 are in a honeycomb or matrix shape. Thus, the plurality of cylindrical batteries 110 are arranged in a honeycomb or matrix shape to improve the space utilization and energy density of the cylindrical battery assembly 100.

[0108] like Fig.16 As shown, in the above embodiment of the present application, optionally, a circuit board 140 is further included, and the first insulating member 130 is provided with a third connecting portion 138 for connecting the circuit board 140. Thus, the circuit board 140 is installed on the first insulating member 130 through the third connecting portion 138, so that the circuit board 140 is stably installed.

[0109] like Fig.11 , Fig.12 and Fig.13 As shown, in the above embodiment of the present application, optionally, the limiting portion 1343 is in a mesh shape. Thus, the plurality of cylindrical batteries 110 are arranged in a mesh shape to improve the space utilization and energy density of the cylindrical battery assembly 100.

[0110] like Fig.10 , Fig.11 , Fig.12 and Fig.18As shown, in the above embodiment of the present application, optionally, the limiting portion 1343 is provided with a first groove 13431 at the first through hole 131, which is used to avoid the injection hole 114 of the cylindrical battery 110. Therefore, by providing the first groove 13431 at the limiting portion 1343 located at the first through hole 131, the injection hole 114 of the cylindrical battery 110 can be avoided.

[0111] like Fig. 9 , Fig.11 and Fig.12 As shown, in the above embodiment of the present application, optionally, the first insulating member 130 is provided with a plurality of protrusions 136 on a side away from the cylindrical battery 110, and the protrusions 136 and the limiting portion 1343 form a second receiving groove 13411, and the second receiving groove 13411 is used to receive the electrical connection sheet 120. Thus, the receiving and installation of the electrical connection sheet 120 is achieved.

[0112] like Fig. 9 , Fig.11 and Fig.12 As shown, in the above embodiment of the present application, optionally, the protrusion 136 is provided with a second through hole 1361. Thus, the first housing 1371 and the second housing 1372 are conveniently firmly connected as one through bolts.

[0113] like Fig.13 , Fig.17 and Fig.18 As shown, in the above embodiment of the present application, optionally, the first insulating member 130 has a first surface 13434 and a second surface 13435, the first receiving groove 134 passes through the first surface 13434 and the second surface 13435, the limiting portion 1343 includes a transition portion 13432 and a support portion 13433, the transition portion 13432 is connected to the first surface 13434, and the support portion 13433 is used to support the cylindrical battery 110. As a result, the transition portion 13432 and the support portion 13433 define a limiting groove that matches the shape of the cylindrical battery 110, thereby playing the role of radial limiting and axial supporting the cylindrical battery 110, and then the cylindrical battery 110 is stably installed in the first receiving groove 134, effectively improving the stability of use.

[0114] like Fig.18 and Fig.19As shown, in the above embodiment of the present application, optionally, there is a gap between the support portion 13433 and the second surface 13435. During the manufacturing process of the first insulating member 130, due to the injection molding process, the support portion 13433 has burrs or thickening in the direction toward the first surface 13434. The burrs or thickening problems will cause a gap between the first end surface 111 of the cylindrical battery 110 and the second surface 13435, which is not conducive to the electrical and stable connection between the positive and negative poles of the cylindrical battery 110 and the electrical connection sheet 120. There is a certain gap between the support portion 13433 and the second surface 13435, which can offset the gap caused by the burrs or thickening.

[0115] In the above embodiment of the present application, optionally, the height of the gap is 0.4 mm to 0.7 mm, preferably 0.4 mm or 0.7 mm.

[0116] like Fig.13 and Fig.14 As shown, in one embodiment of the present application, optionally, the first insulating member 130 includes a first shell 1371 and a second shell 1372, the first shell 1371 and the second shell 1372 form a accommodating space 1373, and are respectively provided with a plurality of corresponding first accommodating grooves 134 for accommodating the cylindrical battery 110, the first accommodating groove 134 faces the end surface of the cylindrical battery 110, the first shell 1371 and the second shell 1372 are respectively provided with a limiting portion 1343 at one end of the first accommodating groove 134, the limiting portion 1343 has the first through hole 131, and the limiting portion 1343 is arranged between the plane where the first end surface 111 is located and the plane where the electrical connecting piece 120 is located.

[0117] Thus, a plurality of first receiving grooves 134 for receiving the cylindrical batteries 110 are provided on the end faces of the first shell 1371 and the second shell 1372 facing the cylindrical batteries 110, so as to provide a receiving space 1373 for the plurality of cylindrical batteries 110, so that the plurality of cylindrical batteries 110 are wrapped in the receiving space 1373. The limiting portion 1343 is provided between the plane of the first end face 111 and the plane where the electrical connection sheet 120 is located, and the limiting portion 1343 is provided with a first through hole 131 at each first receiving groove 134, so as to provide a connection space for the cylindrical batteries 110 and the electrical connection sheet 120, so as to facilitate the electrical connection sheet 120 to contact the electrodes of the cylindrical batteries 110 to achieve electrical connection, and then the plurality of cylindrical batteries 110 are electrically connected through the electrical connection sheet 120 to achieve series and parallel connection, so as to improve the voltage, current and capacity of the cylindrical battery assembly 100.

[0118] like Fig.12 , Fig.13 , Fig.14 and Fig.18As shown, in the above embodiment of the present application, optionally, the first housing 1371 and the second housing 1372 are provided with a plurality of protrusions 136 on the side away from the cylindrical battery 110, and the protrusions 136 and the limiting portion 1343 form a second receiving groove 13411, and the second receiving groove 13411 is used to receive the electrical connection sheet 120. Thus, the receiving and installation of the electrical connection sheet 120 is achieved.

[0119] like Fig.12 , Fig.13 , Fig.14 and Fig.18 As shown, in the above embodiment of the present application, optionally, the protrusion 136 is provided with a second through hole 1361, the first housing 1371 is provided with a fourth connection portion 13711 at a part of the second through hole 1361 on a side facing the cylindrical battery 110, and the second housing 1372 is provided with a fifth connection portion 13721 for connecting the fourth connection portion 13711. Thus, the fourth connection portion 13711 and the fifth connection portion 13721 are conveniently connected as a whole by bolts, so that the first housing 1371 and the second housing 1372 are connected as a whole by bolts, thereby improving the installation stability of the cylindrical battery 110.

[0120] like Figure 4 , Figure 8 and Fig.15 As shown, in one embodiment of the present application, optionally, the electrical connection sheet 120 includes at least two electrical connection sheet units 121 and a sixth connection portion 122, the electrical connection sheet units 121 are connected through the sixth connection portion 122, and the electrical connection sheet unit 121 includes a hollow portion 1211, a first electrical connection portion 1212, and a second electrical connection portion 1213, and the hollow portion 1211 separates the first electrical connection portion 1212 from the second electrical connection portion 1213. As a result, two or more cylindrical batteries 110 share one electrical connection sheet 120, thereby effectively improving the installation efficiency of the electrical connection sheet 120. The hollow portion 1211 separates the first electrical connection portion 1212 from the second electrical connection portion 1213, so that it is convenient to make the first electrical connection portion 1212 and the second electrical connection portion 1213 stably contact with the electrode through welding, which is conducive to improving the contact quality between the electrical connection sheet unit 121 and the electrode, thereby improving the stability and reliability of the electrical connection.

[0121] like Figure 4 , Figure 8 and Fig.15As shown, in the above embodiment of the present application, optionally, the hollow portion 1211 has one or more structures of a straight line, an I-shaped, a cross-shaped, a Z-shaped, an S-shaped, and an H-shaped, so as to provide a welding space between the electrical connection sheet unit 121 and the electrode, thereby improving the welding quality of the electrical connection sheet unit 121. The specific shape can be designed according to the actual needs of the product, and it is sufficient to expose the electrodes of the cylindrical battery 110, and will not be listed here one by one.

[0122] In the above embodiment of the present application, optionally, the width of the hollow portion 1211 is 0.5 mm to 1.5 mm. Therefore, by controlling the width of the hollow portion 1211 within the range of 0.5 mm to 1.5 mm, on the one hand, it is possible to avoid the hollow portion 1211 being too small to affect the welding between the electrical connection sheet unit 121 and the electrode, and on the other hand, it is possible to avoid the hollow portion 1211 being too large to cause the contact area between the electrical connection sheet unit 121 and the electrode to be too small to affect the stability and reliability of the electrical connection.

[0123] In the above embodiments of the present application, optionally, the electrical connection sheet unit 121 has one or more of a first arc-shaped structure 124 , a second arc-shaped structure 126 or a square structure 125 .

[0124] like Figure 4 As shown, a square structure 125 is provided on the electrical connection sheet unit 121 to avoid the fasteners, thereby facilitating the connection between the fasteners and the housing 200 , thereby allowing the cylindrical battery 110 to be stably installed in the housing 200 .

[0125] like Figure 8 As shown, by providing a second arc-shaped structure 126 on the electrical connection sheet unit 121, the electrical connection sheet 120 is positioned for installation, which is beneficial to improving the installation efficiency and installation accuracy of the electrical connection sheet 120. By providing a square structure 125 on the electrical connection sheet unit 121, other structural parts are avoided to prevent the electrical connection sheet 120 from interfering with or electrically contacting other structures.

[0126] like Fig.15 As shown, a square structure 125 is provided on the electrical connection piece unit 121 to position the electrical connection piece 120 , thereby improving the installation efficiency and accuracy of the electrical connection piece 120 .

[0127] like Figure 1As shown, in the above embodiment of the present application, optionally, the electrical connection sheet unit 121 has a first arc-shaped structure 124, and the diameter of the first arc-shaped structure 124 is smaller than the diameter of the cylindrical battery 110. Therefore, by setting the diameter of the first arc-shaped structure 124 to be smaller than the diameter of the cylindrical battery 110, the first insulating member 130 can better isolate the electrical connection sheet 120 from the first end face 111 or the second end face 112 of the cylindrical battery 110, thereby improving the insulation protection effect of the first insulating member 130 on the cylindrical battery 110, and further reducing the probability of a short circuit of the cylindrical battery 110 when in use.

[0128] like Figure 1 As shown, in the above embodiment of the present application, optionally, the electrical connection sheet unit 121 has a first arc-shaped structure 124, and the diameter of the first arc-shaped structure 124 is 6mm to 8mm smaller than the diameter of the cylindrical battery 110. Thus, on the one hand, it can be avoided that the diameter of the first arc-shaped structure 124 is too large, which causes the electrical connection sheet 120 to contact the first end face 111 or the second end face 112 of the cylindrical battery 110 and easily cause a short circuit, and on the other hand, it can be avoided that the diameter of the first arc-shaped structure 124 is too small to affect the positioning and installation of the electrical connection sheet 120 and the effect of current conduction.

[0129] like Fig.15 As shown, in the above embodiment of the present application, optionally, the electrical connection piece unit 121 has a square structure 125, and the sixth connection portion 122 has a square structure 125. Thus, the installation of the electrical connection piece 120 is positioned, which is beneficial to improving the installation efficiency and installation accuracy of the electrical connection piece 120.

[0130] like Figure 4 , Figure 8 and Fig.15 As shown, in the above embodiment of the present application, optionally, the electrical connection sheet 120 also includes a sampling unit 123. As a result, the circuit board 140 is electrically connected to the electrical connection sheet 120 through the sampling unit 123, so as to sample the status information of the cylindrical battery 110, which is one or more of voltage, current, and resistance. Exemplarily, the circuit board 140 is a battery management system, which is a control unit of the cylindrical battery 110. It is electrically connected to the cylindrical battery 110 through the sampling unit 123, and plays the role of overcharging, over-temperature protection, over-current, over-discharging, and has a cylindrical battery voltage balancing function, etc.

[0131] like Figure 8 and Fig.15As shown, in the above embodiment of the present application, optionally, the width of the sampling portion 123 is smaller than the width of the sixth connecting portion 122. Thus, the electrical connection sheet 120 is welded with the circuit board 140 through the sampling portion 123 to achieve electrical connection, and the sampling portion 123 is prevented from having structural interference or electrical contact with other components on the circuit board 140 due to its excessive width.

[0132] like Figure 8 As shown, in the above embodiments of the present application, optionally, the hollow portion 1211 has one or more structures of I-type, cross-type, and H-type, and the first electrical connection portion 1212 and / or the second electrical connection portion 1213 has a bending portion 1214 to provide welding space between the electrical connection sheet unit 121 and the electrode. The specific shape can be designed according to the actual needs of the product, and will not be listed here. The first electrical connection portion 1212 and / or the second electrical connection portion 1213 has a bending portion 1214 so that the first electrical connection portion 1212 and / or the second electrical connection portion 1213 are close to the electrode of the cylindrical battery 110, thereby improving the stability and reliability of the electrical connection.

[0133] like Figure 7 and Fig. 9 As shown, in the above embodiment of the present application, optionally, the electrical connection piece 120 on the first insulating member 130 is within the region of the first insulating member 130. Thus, not only the accommodation and installation function of the electrical connection piece 120 is realized, but also the insulation effect of the first insulating member 130 is guaranteed.

[0134] like Fig.15 As shown, in the above embodiment of the present application, optionally, the cylindrical battery 110 includes a first electrode 113 and a second electrode 115, and the sixth connecting portion 122 includes a series segment 1221 and a parallel segment 1222, the series segment 1221 is used for electrical connection between the first electrode 113 and the second electrode 115, and the parallel segment 1222 is used for electrical connection between the first electrodes 113, and the width of the series segment 1221 is greater than the width of the parallel segment 1222. When the cylindrical battery 110 is short-circuited due to external extrusion, internal defects or external impact, the parallel segment 1222 with a smaller width will be melted, which plays a safety protection effect of a fuse, greatly improving the reliability and safety of the cylindrical battery 110.

[0135] In the above embodiments of the present application, optionally, the ratio of the width of the series section 1221 to the width of the parallel section 1222 is between 1.5-7.

[0136] An embodiment of the present application further provides an energy storage power supply 1000 , comprising a housing 200 and the cylindrical battery assembly 100 described in any of the above embodiments, wherein the cylindrical battery assembly 100 is disposed in the housing 200 .

[0137] The cylindrical battery assembly 100 has the cylindrical battery assembly 100 described in any of the above embodiments, and thus has all the beneficial effects of the cylindrical battery assembly 100 described in any of the above embodiments, which will not be described in detail here.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0139] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A cylindrical battery assembly, characterized in that: It includes a plurality of cylindrical batteries, each of which includes an end face, each of which includes a first end face and a second end face; at least one electrical connection sheet, through which the cylindrical batteries are electrically connected; and at least one first insulating member, part or all of which is arranged between a plane where the first end face is located and a plane where the electrical connection sheet is located, and the first insulating member has a first through hole, which is used to provide a connection space between the cylindrical battery and the electrical connection sheet.

2. The cylindrical battery assembly according to claim 1, characterized in that: The entire first insulating member is disposed between a plane where the first end surface is located and a plane where the electrical connection sheet is located, an outer edge of the first insulating member is circular, and the first insulating member substantially covers or completely covers an outer edge of the first end surface.

3. The cylindrical battery assembly according to claim 2, characterized in that: The cylindrical battery is provided with a first electrode on one side of the first end surface, and the shape of the first through hole matches the shape of the first electrode.

4. The cylindrical battery assembly according to claim 3, characterized in that: An adhesive layer is provided on a side of the first insulating member facing the first end surface.

5. The cylindrical battery assembly according to claim 1, characterized in that: The entire first insulating member is disposed between a plane where the first end surface is located and a plane where the electrical connection sheet is located. The first insulating member includes at least two first through holes, and one first through hole corresponds to one first end surface.

6. The cylindrical battery assembly according to claim 5, characterized in that: The first insulating member includes at least one first connecting portion and at least two main body portions, the main body portion has the first through hole, the first connecting portion is used for connecting between the main body portions, and the outer edge shape of the portion of the main body portion not connected to the first connecting portion matches the outer edge shape of the first end face.

7. The cylindrical battery assembly according to claim 6, characterized in that: An adhesive layer is disposed on a side of the main body facing the first end surface.

8. The cylindrical battery assembly according to claim 1, characterized in that: It also includes a circuit board, wherein the entire first insulating member is arranged between the plane where the first end surface is located and the plane where the electrical connecting piece is located, the circuit board is electrically connected to the electrical connecting piece, and the circuit board is fixed to one side of the cylindrical battery through the electrical connecting piece.

9. The cylindrical battery assembly according to claim 8, characterized in that: A heat insulating member is also included, and the heat insulating member is arranged between the circuit board and the cylindrical battery.

10. The cylindrical battery assembly according to claim 9, characterized in that: The thermal insulation is within the circuit board region.

11. The cylindrical battery assembly according to claim 10, characterized in that: A buffer is also included, which is disposed between the heat insulating member and the cylindrical battery and within the heat insulating member region.

12. The cylindrical battery assembly according to claim 1, characterized in that: The first insulating member is provided with a plurality of first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves are facing the side surfaces of the cylindrical batteries, a first side plate is provided on one side of the first accommodating grooves, the first side plate is provided with the first through hole at each of the first accommodating grooves, and the first side plate is provided between the plane where the first end surface is located and the plane where the electrical connecting sheet is located.

13. The cylindrical battery assembly according to claim 12, characterized in that: The first insulating member includes a second side plate arranged opposite to the first side plate, the first accommodating groove is between the first side plate and the second side plate, the second side plate is provided with the first through hole at each of the first accommodating grooves, and the first side plate and the second side plate are both arranged between the plane where the first end face is located and the plane where the electrical connecting plate is located.

14. The cylindrical battery assembly according to claim 13, characterized in that: The first through hole of the first side plate and the first through hole of the second side plate have the same diameter and are centrally symmetrical.

15. The cylindrical battery assembly according to claim 12, characterized in that: The first side plate has a second receiving groove on a side away from the cylindrical battery, and the second receiving groove is used to receive the electrical connection sheet.

16. The cylindrical battery assembly according to claim 15, characterized in that: The invention also includes at least one second insulating member for covering the electrical connection sheet.

17. The cylindrical battery assembly according to claim 16, characterized in that: The second insulating member is received in the second receiving groove.

18. The cylindrical battery assembly according to claim 12, characterized in that: The first side plate is provided with at least one second connection portion on a side away from the cylindrical battery for installing a heat dissipation fan.

19. The cylindrical battery assembly according to claim 1, characterized in that: The first insulating member is provided with a plurality of first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves are facing the end faces of the cylindrical batteries, the first insulating member is provided with a limiting portion at one end of the first accommodating grooves, the limiting portion has the first through hole, and the limiting portion is arranged between the plane where the first end face is located and the plane where the electrical connecting sheet is located.

20. The cylindrical battery assembly according to claim 19, characterized in that: The plurality of first containing grooves are in a honeycomb shape or a matrix shape.

21. The cylindrical battery assembly according to claim 19, characterized in that: A circuit board is also included, and the first insulating member is provided with a third connecting portion for connecting to the circuit board.

22. The cylindrical battery assembly according to claim 19, characterized in that: The limiting portion is in a mesh shape.

23. The cylindrical battery assembly according to claim 22, characterized in that: The limiting portion is provided with a first groove at the first through hole, for avoiding the liquid injection hole of the cylindrical battery.

24. The cylindrical battery assembly according to claim 19, characterized in that: The first insulating member is provided with a plurality of protrusions on a side away from the cylindrical battery, and the protrusions and the limiting portion form a second receiving groove, and the second receiving groove is used to receive the electrical connecting piece.

25. The cylindrical battery assembly according to claim 24, characterized in that: The protrusion is provided with a second through hole.

26. The cylindrical battery assembly according to claim 19, characterized in that: The first insulating member has a first surface and a second surface, the first accommodating groove runs through the first surface and the second surface, the limiting portion includes a transition portion and a supporting portion, the transition portion is connected to the first surface, and the supporting portion is used to support the cylindrical battery.

27. The cylindrical battery assembly according to claim 26, characterized in that: There is a gap between the support portion and the first surface.

28. The cylindrical battery assembly according to claim 27, characterized in that: The height of the gap is 0.4 mm to 0.7 mm.

29. The cylindrical battery assembly according to claim 1, characterized in that: The first insulating member includes a first shell and a second shell, the first shell and the second shell form a accommodating space, and are respectively provided with a plurality of corresponding first accommodating grooves for accommodating the cylindrical batteries, the first accommodating grooves face the end faces of the cylindrical batteries, the first shell and the second shell are respectively provided with limiting portions at one end of the first accommodating grooves, the limiting portions have the first through hole, and the limiting portions are arranged between the plane where the first end face is located and the plane where the electrical connecting piece is located.

30. The cylindrical battery assembly according to claim 29, characterized in that: The first shell and the second shell are provided with a plurality of protrusions on a side away from the cylindrical battery, and the protrusions and the limiting portion form a second receiving groove, and the second receiving groove is used to receive the electrical connecting sheet.

31. The cylindrical battery assembly according to claim 30, characterized in that: The protrusion is provided with a second through hole, the first shell is provided with a fourth connection portion at a side of part of the second through hole facing the cylindrical battery, and the second shell is provided with a fifth connection portion for connecting the fourth connection portion.

32. The cylindrical battery assembly according to claim 1, characterized in that: The electrical connection sheet includes at least two electrical connection sheet units and a sixth connection portion, the electrical connection sheet units are connected through the sixth connection portion, and the electrical connection sheet units include a hollow portion, a first electrical connection portion, and a second electrical connection portion, and the hollow portion separates the first electrical connection portion from the second electrical connection portion.

33. The cylindrical battery assembly according to claim 32, characterized in that: The hollow portion has one or more structures of a straight line shape, an I shape, a cross shape, a Z shape, an S shape, and an H shape.

34. The cylindrical battery assembly according to claim 33, characterized in that: The width of the hollow portion is 0.5 mm to 1.5 mm.

35. The cylindrical battery assembly according to claim 32, characterized in that: The electrical connection sheet unit has one or more of a first arc-shaped structure, a second arc-shaped structure or a square structure.

36. The cylindrical battery assembly according to claim 35, characterized in that: The electrical connection sheet unit has a first arc-shaped structure, and a diameter of the first arc-shaped structure is smaller than a diameter of the cylindrical battery.

37. The cylindrical battery assembly according to claim 36, characterized in that: The electrical connection sheet unit has a first arc-shaped structure, and a diameter of the first arc-shaped structure is 6 mm to 8 mm smaller than a diameter of the cylindrical battery.

38. The cylindrical battery assembly according to claim 35, characterized in that: The electrical connection sheet unit has a square structure, and the sixth connection portion has a square structure.

39. The cylindrical battery assembly according to claim 32, characterized in that: The electrical connection sheet further includes a sampling portion.

40. The cylindrical battery assembly according to claim 39, characterized in that: The width of the sampling portion is smaller than the width of the sixth connecting portion.

41. The cylindrical battery assembly according to claim 32, characterized in that: The hollow portion has one or more structures of an I-type, a cross-type, and an H-type, and the first electrical connection portion and / or the second electrical connection portion has a bending portion.

42. The cylindrical battery assembly according to claim 5, characterized in that: The electrical connection piece on the first insulating member is within the first insulating member region.

43. The cylindrical battery assembly according to claim 32, characterized in that: The cylindrical battery includes a first electrode and a second electrode, the sixth connecting portion includes a series segment and a parallel segment, the series segment is used for electrical connection between the first electrode and the second electrode, the parallel segment is used for electrical connection between the first electrodes, and the width of the series segment is greater than the width of the parallel segment.

44. The cylindrical battery assembly according to claim 43, characterized in that: The ratio of the width of the series section to the width of the parallel section is 1.5 to 7.

45. An energy storage power supply, characterized in that: It comprises a shell and a cylindrical battery assembly according to any one of claims 1 to 44, wherein the cylindrical battery assembly is arranged in the shell.

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