Battery and electric device

Abstract

The utility model relates to a battery and an electric device. The battery comprises a single battery body, the single battery body comprises a shell, a pole and an insulating part, the insulating part is at least partially located outside the shell, and the insulating part is arranged in the circumferential direction of the pole and located between the pole and the shell; and the electric connecting piece is used for electrically connecting the at least two battery monomers, the electric connecting piece comprises a convergence main body and a plugging bulge, the convergence main body is buckled with the insulating piece, the plugging bulge protrudes out of one side, facing the pole, of the convergence main body, and the plugging bulge is plugged with the pole. According to the battery and the electric device provided by the invention, the reliability of electric connection between the electric connecting piece and the pole can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0002] In recent years, the new energy industry has received increasing attention, and batteries, as an important component of this industry, occupy a large market share. Batteries are formed by connecting multiple individual cells in series, parallel, or a combination of both.

[0003] To facilitate the replacement of individual battery cells, a new type of battery has emerged that utilizes elastic contact fingers for connection, where the electrical connector and the terminal are electrically connected via these fingers. However, this connection method is not suitable for complex operating conditions, such as vibrations during vehicle operation. The electrical connector and elastic contact fingers can easily detach, and the fingers can also easily detach from the terminal, leading to electrical connection failure and reduced safety. Utility Model Content

[0004] Therefore, it is necessary to provide a battery and power device that can improve the reliability of the electrical connection between the electrical connector and the terminal to address the above problems.

[0005] On one hand, this application provides a battery, the battery comprising:

[0006] A battery cell includes a casing, terminals, and an insulating component, wherein the insulating component is at least partially located outside the casing and is circumferentially arranged around the terminals, and is located between the terminals and the casing; and

[0007] An electrical connector for electrically connecting at least two of the battery cells, the electrical connector including a busbar body and a plug-in protrusion, the busbar body being fastened to the insulating member, the plug-in protrusion protruding from the side of the busbar body facing the terminal post, and the plug-in protrusion being plugged into the terminal post.

[0008] In some embodiments, the busbar body has a through hole, the insulating element includes an insulating body and a buckle, the insulating body is arranged circumferentially around the pole post and located between the pole post and the outer shell, the buckle protrudes from the surface of the insulating body facing the busbar body, and the buckle passes through the through hole and is fastened to the side of the busbar body facing away from the insulating body.

[0009] In some embodiments, the insulating element includes an insulating body and a snap fastener. The insulating body is arranged circumferentially around the pole post and located between the pole post and the outer shell. The snap fastener protrudes from the surface of the insulating body facing the busbar body. The busbar body has a locking hole that engages with the snap fastener.

[0010] Alternatively, the insulating component may have a locking hole, and the electrical connector may also include a buckle, which protrudes from the side of the bus body facing the insulating component and engages with the locking hole.

[0011] In some embodiments, the busbar body has a locking hole, the latch protrudes from the surface of the insulating body facing the busbar body, and the end of the latch away from the insulating body is located in the locking hole.

[0012] In some embodiments, the card hole has a first hole wall and a second hole wall that are radially opposite to and spaced apart along the pole post, the buckle engages with the first hole wall, and the buckle is spaced apart from the second hole wall.

[0013] In some embodiments, the first hole wall is a stepped surface and includes a first sub-wall and a second sub-wall. The first sub-wall and the second sub-wall are arranged and connected along the direction from the busbar to the insulating body. The first sub-wall is a vertical surface, the second sub-wall is a horizontal surface, and the second sub-wall is closer to the second hole wall than the first sub-wall.

[0014] The buckle includes a main body and a fastening part. The main body is disposed on the insulating body and passes through the buckle hole. The fastening part protrudes from the side of the main body facing the first hole wall, and the fastening part abuts against the second sub-wall along the direction from the busbar body to the insulating body.

[0015] In some embodiments, the first hole wall further includes a third sub-wall, the second sub-wall and the third sub-wall are disposed and connected along the direction from the busbar to the insulating body, the third sub-wall is an inclined surface, and the third sub-wall gradually moves away from the second hole wall in the direction from the busbar to the insulating body, the third sub-wall is used to guide the buckle into place.

[0016] In some embodiments, the first hole wall further includes a fourth sub-wall, which is connected between the second sub-wall and the third sub-wall, and the second sub-wall, the third sub-wall and the fourth sub-wall together form a protrusion protruding toward the second hole wall relative to the first sub-wall.

[0017] In some embodiments, a plurality of battery cells are arranged along the thickness direction of the battery cells to form a battery pack, at least two battery cells arranged consecutively in the battery pack are connected by the electrical connector, and there are two buckles and two holes arranged along the width direction of the battery cells on opposite sides of the pole post; and / or, the buckle is an arc-shaped buckle, the hole is an arc-shaped hole, and both the buckle and the hole extend circumferentially along the pole post.

[0018] In some embodiments, the pole post is provided with a plug slot;

[0019] The battery also includes a resilient contact finger disposed in the insertion slot and electrically connected to the wall of the insertion slot. The insertion protrusion is inserted into the resilient contact finger and electrically connected to the resilient contact finger.

[0020] In addition, this application also provides an electrical device, which includes a battery as described in any of the above embodiments, the battery being used to provide electrical energy to the electrical device.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] The aforementioned battery and electrical device, through the design of the insertion protrusion connecting to the terminal post and the fastening of the busbar body to the insulation component, achieve a detachable connection between the electrical connector and the individual battery cells, facilitating the replacement of individual battery cells. Furthermore, the fastening of the busbar body to the insulation component, in addition to the insertion protrusion connecting to the terminal post, enhances the stability and reliability of the connection between the electrical connector and the individual battery cells. In this configuration, the insertion protrusion is less likely to detach from the terminal post. Therefore, even under vibration conditions, the insertion protrusion and the terminal post are not easily separated, resulting in higher battery safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the battery in one embodiment of this application;

[0024] Figure 2 for Figure 1 An enlarged schematic diagram of a portion of structure A in the battery shown;

[0025] Figure 3 for Figure 1 A top view of the battery shown;

[0026] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the battery taken along the BB direction.

[0027] Figure 5 for Figure 4 An enlarged schematic diagram of a local structure C in the battery shown;

[0028] Figure 6 for Figure 1 The diagram shows the structure of the electrical connectors in the battery.

[0029] Figure 7 for Figure 6 An inverted view of the electrical connector shown;

[0030] Figure 8 for Figure 6An enlarged schematic diagram of a local structure D in the battery shown;

[0031] Figure 9 for Figure 6 The diagram shows a cross-sectional view of the battery taken along the EE direction.

[0032] Figure 10 for Figure 9 The diagram shows an enlarged view of a local structure F in the battery.

[0033] Icon labels:

[0034] 1. Battery;

[0035] 10. Battery cell; 20. Electrical connector; 30. Flexible contact finger;

[0036] 11. Outer shell; 111. Housing; 112. End cap; 12. Pole post; 121. Plug-in slot; 13. Insulating component; 131. Insulating body; 132. Snap-fit; 1321. Main body; 1322. Fastening part;

[0037] 21. Busbar body; 221. Socket; 2211. First hole wall; 2211a. First sub-wall; 2211b. Second sub-wall; 2211c. Third sub-wall; 2211d. Fourth sub-wall; 2212. Second hole wall; 22. Insertion protrusion. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0045] To facilitate the replacement of individual battery cells, a new type of battery has emerged that utilizes elastic contact fingers for connection, where the electrical connector and the terminal are electrically connected via these fingers. However, this connection method is not suitable for complex operating conditions, such as vibrations during vehicle operation. The electrical connector and elastic contact fingers can easily detach, and the fingers can also easily detach from the terminal, leading to electrical connection failure and reduced safety.

[0046] Please refer to the following: Figure 1 and Figure 2 , Figure 5 and Figure 7 To alleviate the above problems, this application provides a battery 1, which includes a battery cell 10 and an electrical connector 20. The battery cell 10 includes a housing 11, a terminal post 12, and an insulator 13. The insulator 13 is at least partially located outside the housing 11 and is arranged circumferentially around the terminal post 12 and located between the terminal post 12 and the housing 11. The electrical connector 20 is used to electrically connect at least two battery cells 10. The electrical connector 20 includes a current-connecting body 21 and a plug-in protrusion 22. The current-connecting body 21 is fastened to the insulator 13, and the plug-in protrusion 22 protrudes from the side of the current-connecting body 21 facing the terminal post 12 and is plugged into the terminal post 12.

[0047] Specifically, the battery cell 10 can be a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 10 can be cylindrical, flat, square, or other shapes.

[0048] The outer casing 11 of the battery cell 10 includes a housing 111 and an end cap 112, with the end cap 112 covering the opening of the housing 111. The terminal post 12 of the battery cell 10 is disposed on the end cap 112. The terminal post 12 of the battery cell 10 mentioned in this application can be a positive terminal post or a negative terminal post. The terminal post 12 can be cylindrical, cuboid, or other structures, and its specific shape can be set according to requirements. An insulating component 13, commonly known as an upper plastic layer, is at least partially located outside the housing 11 and is arranged circumferentially around the terminal post 12 to isolate the end cap 112 from the terminal post 12, achieving insulation between the end cap 112 and the terminal post 12.

[0049] Electrical connector 20 is used to electrically connect at least two battery cells 10. Specifically, electrical connector 20 includes a busbar body 21 and at least two insertion protrusions 22. The busbar body 21 is fastened to the insulator 13. The insertion protrusions 22 are located on the side of the busbar body 21 facing the terminal post 12, and all insertion protrusions 22 are spaced apart along the length of the busbar body 21. The number of insertion protrusions 22 in the same electrical connector 20 is the same as the number of battery cells 10 electrically connected to the electrical connector 20 and corresponds one-to-one. The insertion protrusions 22 are inserted into the terminal post 12 of the corresponding battery cell 10.

[0050] It is understood that in the same electrical connector 20, every two adjacent insertion protrusions 22 can be inserted into either the positive or negative terminal, so that multiple battery cells 10 can be connected in parallel through the electrical connector 20; or, every two adjacent insertion protrusions 22 can be inserted into the positive and negative terminals respectively, so that multiple battery cells 10 can be connected in series through the electrical connector 20.

[0051] In this application, by designing the insertion protrusion 22 to insert into the terminal post 12 and the busbar body 21 to engage with the insulating component 13, a detachable connection between the electrical connector 20 and the battery cell 10 can be achieved, facilitating the replacement of individual battery cells 10. Furthermore, the engagement of the busbar body 21 with the insulating component 13, based on the insertion protrusion 22 and terminal post 12, enhances the stability and reliability of the connection between the electrical connector 20 and the battery cell 10. In this configuration, the insertion protrusion 22 is less likely to detach from the terminal post 12. Therefore, even under vibration conditions, the insertion protrusion 22 and terminal post 12 are not easily separated, resulting in higher safety for the battery 1.

[0052] Please see Figures 2 to 8 In some embodiments, the busbar body 21 has a through hole, and the insulating component 13 includes an insulating body 131 and a buckle 132. The insulating body 131 is arranged around the periphery of the pole post 12 and is located between the pole post 12 and the outer shell 11. The buckle 132 protrudes from the surface of the insulating body 131 facing the busbar body 21, and the buckle 132 passes through the through hole and is fastened to the side of the busbar body 21 facing away from the insulating body 131.

[0053] In this embodiment, the buckle 132 engages with the surface of the busbar 21 facing away from the insulating body 131, so that the battery cell 10 and the electrical connector 20 are securely fixed, reducing the risk of the insertion protrusion 22 detaching from the terminal post 12.

[0054] In some embodiments, the insulating member 13 is provided with a locking hole 221, and the electrical connector 20 further includes a buckle 132, which protrudes from the side of the bus body 21 facing the insulating member 13 and engages with the locking hole 221.

[0055] Understandably, in this embodiment, the latch 132 and the insertion protrusion 22 are located on the same side of the busbar body 21, and the latch 132 engages with the latch 132 of the insulating member 13, while the insertion protrusion 22 is inserted into the terminal post 12. This method can increase the reliability of the connection between the battery cell 10 and the electrical connector 20 and reduce the risk of the insertion protrusion 22 detaching from the terminal post 12.

[0056] In some other embodiments, the insulating element 13 includes an insulating body 131 and a buckle 132. The insulating body 131 is arranged circumferentially around the pole post 12 and is located between the pole post 12 and the outer shell 11. The buckle 132 protrudes from the surface of the insulating body 131 facing the busbar body 21. The busbar body 21 has a locking hole 221, which engages with the buckle 132.

[0057] It is understood that the insulating body 131 is used for the insulating pole 12 and the outer shell 11.

[0058] In this embodiment, the buckle 132 protrudes from the surface of the insulating body 131 facing the current-collecting body 21. The current-collecting body 21 has a buckle hole 221, which engages with the buckle 132. This method can also increase the reliability of the connection between the battery cell 10 and the electrical connector 20 and reduce the risk of the insertion protrusion 22 detaching from the terminal post 12.

[0059] Please see Figure 5 In some embodiments, the busbar body 21 has a locking hole 221, and the latch 132 protrudes from the surface of the insulating body 131 facing the busbar body 21, with the end of the latch 132 away from the insulating body 131 located inside the locking hole 221. That is, the latch 132 does not protrude from the surface of the busbar body 21 facing away from the insulating body 131. In this way, the locking hole 221 can hide the latch 132 therein, preventing the latch 132 from protruding from the busbar body 21 and causing damage to the latch 132 or it from falling off due to external force, thus extending the service life of the latch 132 and improving the reliability of the latching.

[0060] Please see Figure 5 , Figures 8 to 10 In some embodiments, the clasp 221 has a first hole wall 2211 and a second hole wall 2212 that are radially opposite to and spaced apart along the pole post 12, the buckle 132 is engaged with the first hole wall 2211, and the buckle 132 is spaced apart from the second hole wall 2212.

[0061] The first hole wall 2211 can be closer to or farther from the central axis of the pole post 12 relative to the second hole wall 2212. For ease of explanation, the following embodiments will be described with the example of the first hole wall 2211 being farther from the central axis of the pole post 12 relative to the second hole wall 2212.

[0062] The latch 132 engages with the first hole wall 2211, securing the electrical connector 20 to the battery cell 10. A gap is provided between the latch 132 and the second hole wall 2212, allowing for deformation of the latch 132. When the battery cell 10 needs to be replaced, the latch 132 can be moved towards the gap, and the electrical connector 20 can be removed in the direction away from the battery cell 10. Figure 5For example, the electrical connector 20 is removed upwards to separate the electrical connector 20 from the battery cell 10, making it easier to replace the battery 1 later.

[0063] In some embodiments, the first hole wall 2211 is a stepped surface and includes a first sub-wall 2211a and a second sub-wall 2211b. The first sub-wall 2211a and the second sub-wall 2211b are arranged and connected along the direction from the busbar body 21 to the insulating body 131. The first sub-wall 2211a is a vertical surface, and the second sub-wall 2211b is a horizontal surface. The second sub-wall 2211b is closer to the second hole wall 2212 than the first sub-wall 2211a. The buckle 132 includes a main body 1321 and a fastening part 1322. The main body 1321 is disposed on the insulating body 131 and passes through the buckle hole 221. The fastening part 1322 protrudes from the side of the main body 1321 facing the first hole wall 2211, and the fastening part 1322 abuts against the second sub-wall 2211b along the direction from the busbar body 21 to the insulating body 131.

[0064] Specifically, the first sub-wall 2211a and the second sub-wall 2211b can both be planar structures or arc-shaped surface structures extending circumferentially along the pole post 12.

[0065] The main body 1321 of the buckle 132 passes between the first hole wall 2211 and the second hole wall 2212, and the fastening part 1322 of the buckle 132 faces the first hole wall 2211 and abuts against the second sub-wall 2211b in the direction of the bus body 21 pointing to the insulating body 131, so that the buckle 132 is fastened to the first hole wall 2211 to prevent the electrical connector 20 from separating from the battery cell 10.

[0066] In some embodiments, the first hole wall 2211 further includes a third sub-wall 2211c. The second sub-wall 2211b and the third sub-wall 2211c are arranged and connected along the direction from the busbar 21 to the insulating body 131. The third sub-wall 2211c is an inclined surface, and the third sub-wall 2211c gradually moves away from the second hole wall 2212 in the direction from the busbar 21 to the insulating body 131. The third sub-wall 2211c is used to guide the buckle 132 into the hole, so as to facilitate the insertion of the buckle 132 into the hole 221.

[0067] In some embodiments, the first hole wall 2211 further includes a fourth sub-wall 2211d, which is connected between the second sub-wall 2211b and the third sub-wall 2211c. The second sub-wall 2211b, the third sub-wall 2211c and the fourth sub-wall 2211d together form a protrusion that protrudes toward the second hole wall 2212 relative to the first sub-wall 2211a.

[0068] Specifically, the fourth sub-wall 2211d can be either a planar structure or an arc-shaped surface structure extending circumferentially along the pole post 12.

[0069] The protrusion formed by the second sub-wall 2211b, the third sub-wall 2211c, and the fourth sub-wall 2211d has a larger size in the direction from the busbar 21 to the insulating body 131, and has better mechanical strength. This reduces the risk of cracking of the protrusion due to the fastening force of the buckle 132 when the buckle 132 is engaged with the second hole wall 2212, and facilitates the extension of the service life of the electrical connector 20.

[0070] Of course, in some other embodiments, the second sub-wall 2211b and the third sub-wall 2211c can also be directly connected.

[0071] Please see Figures 1 to 5 In some embodiments, multiple battery cells 10 are arranged along the thickness direction of the battery cells 10 to form a battery pack. At least two battery cells 10 arranged consecutively in the battery pack are connected by an electrical connector 20. The buckle 132 and the buckle hole 221 are both two and are arranged on opposite sides of the pole post 12 along the width direction of the battery cells 10.

[0072] The thickness direction of the battery cell 10 refers to the direction in which the smallest dimension of the battery cell 10 is located. Specifically, the thickness of the battery cell 10 is smaller than the width and height of the battery cell 10.

[0073] Both the clip 132 and the clip hole 221 are two in number and are arranged on opposite sides of the terminal post 12 along the width direction of the battery cell 10. Therefore, the electrical connector 20 does not have multiple clip holes 221 arranged in the thickness direction of the battery cell 10. This can avoid the situation where the current flow area of ​​the electrical connector 20 is reduced due to the arrangement of multiple clip holes 221 in the thickness direction of the battery cell 10.

[0074] Furthermore, the electrical connector 20 is electrically connected to at least two battery cells 10 arranged continuously along the thickness direction of the battery cell 10. There are two latches 132 and two latch holes 221, which are arranged on opposite sides of the terminal post 12 along the width direction of the battery cell 10. The arrangement direction of the latches 132 and latch holes 221 is perpendicular to the direction of the at least two battery cells 10 connected to the electrical connector 20. For the same electrical connector 20, it is not only subjected to the force of all the battery cells 10 connected to it in the thickness direction of the battery cell 10, but also subjected to the force of the latches 132 connected to it and arranged opposite to it in the width direction of the battery cell 10. The two forces act simultaneously and are perpendicular to each other, which restricts the electrical connector 20 in these two directions, and further enhances the reliability of its connection with the battery cell 10.

[0075] Please see Figures 1 to 8In some embodiments, the buckle 132 is an arc-shaped buckle, and the locking hole 221 is an arc-shaped hole, with both the buckle 132 and the locking hole 221 extending circumferentially along the pole post 12. This increases the area where the buckle 132 and the locking hole 221 engage circumferentially with the pole post 12, thereby improving the reliability of the engagement.

[0076] Please see Figure 2 and Figure 5 In some embodiments, the terminal post 12 is provided with a plug-in groove 121; the battery 1 also includes an elastic contact 30, which is disposed in the plug-in groove 121 and electrically connected to the groove wall of the plug-in groove 121, and the plug-in protrusion 22 is inserted into the elastic contact 30 and electrically connected to the elastic contact 30.

[0077] The elastic contact 30 is disposed in the insertion groove 121, and when the insertion protrusion 22 is inserted into the insertion groove 121, it abuts against the groove wall of the insertion protrusion 22 and the insertion groove 121 through deformation, so that the insertion protrusion 22 can be electrically connected to the terminal post 12 through the elastic contact 30, thereby realizing the electrical connection between the battery cell 10 and the electrical connector 20.

[0078] The insertion slot 121, the resilient contact finger 30, and the insertion protrusion 22 have roughly the same shape. For example, the insertion slot 121 and the insertion protrusion 22 are both cylindrical, and the resilient contact finger 30 is annular; or, the insertion slot 121 and the insertion protrusion 22 are both cuboids, and the resilient contact finger 30 is rectangular. The shapes of the insertion slot 121, the resilient contact finger 30, and the insertion protrusion 22 can be set according to requirements.

[0079] In this application, by setting the insertion protrusion 22 to insert into the elastic contact finger 30 of the insertion slot 121, the insertion protrusion 22 is difficult to disengage from the elastic contact finger 30 due to the elastic force of the elastic contact finger 30. Even under vibration conditions, the insertion protrusion 22 and the elastic contact finger 30 are not easy to separate, making the electrical connection between the electrical connector 20 and the terminal 12 more reliable and improving the safety of the battery 1. In addition, each individual battery cell 1 is electrically connected to each other and supplies power to the outside through the electrical connector 20. The electrical connector 20 and the terminal 12 are connected by the elastic contact finger 30. On the one hand, the elastic contact finger 30 has elasticity, which can enhance the connection force between the electrical connector 20 and the terminal 12 and improve the current carrying capacity. On the other hand, the elastic contact finger 30 and the terminal 12 and the electrical connector 20 are in contact connection and can be disassembled, so that when a single battery cell 10 has a problem, it can be replaced.

[0080] Of course, in some other embodiments, a plug groove 121 may be formed on the plug protrusion 22, the elastic contact finger 30 is located in the plug groove 121 of the plug protrusion 22, and the pole post 12 is inserted into the elastic contact finger 30.

[0081] This application also provides an electrical device that includes a battery 1 as described in any of the above embodiments, the battery 1 being used to provide electrical energy to the electrical device.

[0082] The electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0083] It should be understood that the technical solutions described in the embodiments of this application are not limited to the electrical devices described above.

[0084] The aforementioned battery 1 and electrical device, through the design of the insertion protrusion 22 connecting to the terminal post 12 and the fastening of the busbar body 21 to the insulating component 13, achieve a detachable connection between the electrical connector 20 and the battery cell 10, facilitating the replacement of individual battery cells 10. Furthermore, the fastening of the busbar body 21 to the insulating component 13, based on the insertion protrusion 22 connecting to the terminal post 12, enhances the stability and reliability of the connection between the electrical connector 20 and the battery cell 10. In this configuration, the insertion protrusion 22 is less likely to detach from the terminal post 12. Therefore, even under vibration conditions, the insertion protrusion 22 and the terminal post 12 are not easily separated, resulting in higher safety for battery 1.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery, characterized by, The battery comprises: a battery cell (10) comprising a shell (11), a pole (12) and an insulating piece (13), the insulating piece (13) being at least partially located outside the shell (11), and the insulating piece (13) being arranged around the circumference of the pole (12) and between the pole (12) and the shell (11); and an electrical connector (20) for electrically connecting at least two battery cells (10), the electrical connector (20) comprising a busbar body (21) and a plug-in protrusion (22), the busbar body (21) being engaged with the insulating piece (13), the plug-in protrusion (22) protruding from one side of the busbar body (21) towards the pole (12), and the plug-in protrusion (22) being plugged into the pole (12).

2. The battery of claim 1, wherein, The busbar body (21) is provided with a through hole, the insulating piece (13) comprises an insulating body (131) and a buckle (132), the insulating body (131) is arranged around the circumference of the pole (12) and between the pole (12) and the shell (11), the buckle (132) protrudes from the surface of the insulating body (131) towards the busbar body (21), and the buckle (132) is arranged in the through hole and engaged with one side of the busbar body (21) away from the insulating body (131).

3. The battery of claim 1, wherein, The insulating piece (13) comprises an insulating body (131) and a buckle (132), the insulating body (131) is arranged around the circumference of the pole (12) and between the pole (12) and the shell (11), the buckle (132) protrudes from the surface of the insulating body (131) towards the busbar body (21), the busbar body (21) is provided with a clamping hole (221), and the clamping hole (221) is engaged with the buckle (132). Alternatively, the insulating piece (13) is provided with a clamping hole (221), and the electrical connector (20) further comprises a buckle (132), the buckle (132) protrudes from one side of the busbar body (21) towards the insulating piece (13) and is engaged with the clamping hole (221).

4. The battery of claim 3, wherein, The busbar body (21) is provided with a clamping hole (221), the buckle (132) protrudes from the surface of the insulating body (131) towards the busbar body (21), and one end of the buckle (132) away from the insulating body (131) is located in the clamping hole (221).

5. The battery of claim 4, wherein, The clamping hole (221) has a first hole wall (2211) and a second hole wall (2212) arranged opposite to each other and spaced apart along the radial direction of the pole (12), the buckle (132) is engaged with the first hole wall (2211), and the buckle (132) is arranged in a gap with the second hole wall (2212).

6. The battery of claim 5, wherein, The first hole wall (2211) is a stepped surface and comprises a first sub-wall (2211a) and a second sub-wall (2211b), the first sub-wall (2211a) and the second sub-wall (2211b) are arranged in a direction in which the bus body (21) points to the insulation body (131) and are connected, the first sub-wall (2211a) is a vertical surface, the second sub-wall (2211b) is a horizontal surface, and the second sub-wall (2211b) is closer to the second hole wall (2212) than the first sub-wall (2211a); The buckle (132) comprises a main body part (1321) and a buckling part (1322), the main body part (1321) is arranged on the insulation body (131) and passes through the clamping hole (221), the buckling part (1322) protrudes from one side of the main body part (1321) toward the first hole wall (2211), and the buckling part (1322) abuts against the second sub-wall (2211b) in a direction in which the bus body (21) points to the insulation body (131).

7. The battery of claim 6, wherein, The first hole wall (2211) further comprises a third sub-wall (2211c), the second sub-wall (2211b) and the third sub-wall (2211c) are arranged in a direction in which the bus body (21) points to the insulation body (131) and are connected, the third sub-wall (2211c) is an inclined surface, and the third sub-wall (2211c) gradually moves away from the second hole wall (2212) in the direction in which the bus body (21) points to the insulation body (131), and the third sub-wall (2211c) is used for guiding the buckle (132) to enter.

8. The battery of claim 7, wherein, The first hole wall (2211) further comprises a fourth sub-wall (2211d), the fourth sub-wall (2211d) is connected between the second sub-wall (2211b) and the third sub-wall (2211c), and the second sub-wall (2211b), the third sub-wall (2211c) and the fourth sub-wall (2211d) jointly form a protrusion protruding toward the second hole wall (2212) relative to the first sub-wall (2211a).

9. The battery according to any one of claims 3 to 8, characterized in that A plurality of the battery monomers (10) are arranged in a thickness direction of the battery monomer (10) to form a battery row, at least two battery monomers (10) arranged continuously in the battery row are connected through the electric connecting piece (20), the buckle (132) and the clamping hole (221) are both two and are arranged on opposite sides of the pole (12) in a width direction of the battery monomer (10); and / or the buckle (132) is an arc-shaped buckle, the clamping hole (221) is an arc-shaped hole, and the buckle (132) and the clamping hole (221) both extend in a circumferential direction of the pole (12).

10. The battery of claim 1, wherein, The pole (12) is provided with a plug-in slot (121). The battery further comprises an elastic contact finger (30) arranged in the insertion slot (121) and electrically connected with the slot wall of the insertion slot (121), and the insertion protrusion (22) is inserted into the elastic contact finger (30) and electrically connected with the elastic contact finger (30).

11. An electrical device, characterized by The electric device comprises the battery as claimed in any one of claims 1 to 10, and the battery is used to provide electric energy for the electric device.

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