Battery and electric device

Abstract

The application relates to a battery and a power utilization device. The battery comprises: a battery monomer comprising a pole, the pole comprising a main body and a blocking part, the main body being provided with a groove, the groove comprising a first sub-groove and a second sub-groove which are communicated with each other, the blocking part being arranged on the main body, and a projection of the blocking part on a central axis direction of the pole covering part of a slot of the first sub-groove, the remaining part of the slot of the first sub-groove being configured to form an entrance, and the blocking part and a groove bottom wall of the first sub-groove defining a limiting groove; and an electric connecting piece comprising a bus main body, a plug-in part and a limiting part, the plug-in part and the limiting part being located on a side of the bus main body facing the pole, and the limiting part protruding from a circumferential side surface of the plug-in part; when the battery is in a first state, the limiting part is located in the limiting groove, and when the battery is in a second state, a projection of the limiting part on the central axis direction of the pole falls into the entrance. The battery and the power utilization device provided by the application can improve the reliability of the electric connection between the electric connecting piece and the pole.

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. In such cases, the electrical connector and the elastic contact fingers can easily detach, leading to electrical connection failure between the connector and the terminal 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 an electrode post, the electrode post comprising a body and a blocking portion. The body has a groove, the groove having a first sub-groove and a second sub-groove that communicate with each other. The cross-sectional area of ​​the first sub-groove is larger than that of the second sub-groove. The blocking portion is disposed on the body, and the projection of the blocking portion along the central axis of the electrode post covers a portion of the opening of the first sub-groove. The remaining portion of the opening of the first sub-groove is configured to form an inlet / outlet. The blocking portion is spaced apart from the bottom wall of the first sub-groove and defines a limiting groove with the bottom wall of the first sub-groove.

[0007] An electrical connector for electrically connecting at least two of the battery cells, the electrical connector including a busbar body, a plug-in portion and a limiting portion, the plug-in portion and the limiting portion being located on the side of the busbar body facing the terminal post, and the limiting portion protruding from the peripheral side of the plug-in portion, the plug-in portion being detachably inserted into the second sub-slot;

[0008] The battery has a first state and a second state. When the battery is in the first state, the limiting part is located in the limiting groove. When the battery is in the second state, the projection of the limiting part on the central axis of the electrode falls into the inlet / outlet.

[0009] In some embodiments, the blocking portion is located within the first sub-groove and protrudes from the sidewall of the first sub-groove.

[0010] In some embodiments, the surface of the blocking portion facing away from the bottom wall of the first sub-slot is flush with the surface of the opening of the first sub-slot on the main body.

[0011] In some embodiments, the projections of the blocking portion and the second sub-groove in the direction of the central axis of the pole post do not overlap.

[0012] In some embodiments, the blocking portions are two and are arranged radially opposite to each other and spaced apart along the pole post.

[0013] In some embodiments, the first sub-slot is a circular slot with an annular sidewall. The peripheral side of the blocking portion includes a first arcuate segment and a first straight segment connected end to end along its circumference. Both first arcuate segments of the two blocking portions are completely fitted with the sidewall of the first sub-slot. The two first straight segments of the two blocking portions are arranged opposite to each other and define the entrance / exit.

[0014] In some embodiments, the peripheral side surface of the limiting portion includes two second arcuate segments and two second straight segments, the second arcuate segments and the second straight segments being alternately arranged along the circumferential direction of the peripheral side surface of the limiting portion and sequentially connected at their ends;

[0015] When the battery is in the first state, the second straight section is perpendicular to the first straight section, and the second arc section corresponds one-to-one with the limiting groove and is located in the corresponding limiting groove. When the battery is in the second state, the projections of the second straight section and the second arc section in the direction of the central axis of the pole column both fall into the inlet and outlet, and the second straight section is parallel to the first straight section.

[0016] In some embodiments, the manifold body has a through hole, and the plug portion has an anti-rotation groove on its surface facing the manifold body, the anti-rotation groove communicating with the through hole.

[0017] In some embodiments, the battery cell further includes an elastic contact finger disposed in the second sub-slot and arranged circumferentially around the plug portion, and the elastic contact finger elastically abuts against the plug portion and the sidewall of the second sub-slot, and is electrically connected to the electrode post and the plug portion.

[0018] On the other hand, this application also provides an electrical device that includes a battery as described in any of the above embodiments, the battery being used to provide electrical energy to the electrical device.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] In the aforementioned battery and electrical device, when the battery is in its first state, the connector is detachably inserted into the second sub-slot, and the limiting part is located within the limiting slot. In this situation, the blocking part restricts the movement of the limiting part along the central axis of the terminal post, making it difficult for the limiting part and the connector to detach from the groove of the terminal post. Therefore, even under vibration conditions, the electrical connector and the terminal post are not easily detached, ensuring reliable electrical connection and higher battery safety. When the battery is in its second state, the connector is detachably inserted into the second sub-slot, and the projection of the limiting part along the central axis of the terminal post falls into the inlet / outlet, facilitating the removal of the limiting part and the connector from the inlet / outlet, thereby enabling the replacement of faulty or poorly performing battery cells. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a battery cell and an electrical connector in a battery according to an embodiment of this application;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of a portion of structure A in the battery shown;

[0023] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the battery taken along the BB direction.

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of a local structure C in the battery shown;

[0025] Figure 5 This is a schematic diagram of the structure of an electrical connector according to an embodiment of this application;

[0026] Figure 6 for Figure 5 An inverted view of the electrical connector shown;

[0027] Figure 7 This is a schematic diagram of the structure of a battery cell in an embodiment of the present application, showing the cooperation between the battery cell, the insertion part, and the limiting part.

[0028] Figure 8 for Figure 7 An enlarged schematic diagram of a portion of the battery structure D shown;

[0029] Figure 9 This is a schematic diagram of the structure of a battery cell in an embodiment of the present application, showing the cooperation between a terminal post, a plug-in portion, and a limiting portion;

[0030] Figure 10 for Figure 9 An enlarged schematic diagram of a local structure E in the battery shown;

[0031] Figure 11This is a schematic diagram of the structure of a single battery cell according to an embodiment of this application;

[0032] Figure 12 for Figure 11 An enlarged schematic diagram of a local structure F in the battery shown;

[0033] Figure 13 This is an exploded view of a battery in one embodiment of this application;

[0034] Figure 14 This is a schematic diagram of the structure of an electrical device according to an embodiment of this application.

[0035] Icon labels:

[0036] 1000. Electrical appliances;

[0037] 100. Battery;

[0038] 10. Battery cell; 20. Electrical connector; 30. First part; 40. Second part;

[0039] 11. Pole post; 111. Main body; 1111. Groove; 1112. First sub-groove; 1113. Second sub-groove; 1114. Inlet / outlet; 1115. Limiting groove; 112. Blocking part; 1121. First arc-shaped section; 1122. First straight section; 12. Elastic contact finger; 13. Outer shell;

[0040] 21. Busbar body; 211. Through hole; 22. Insertion part; 221. Anti-rotation groove; 23. Limiting part; 231. Second arc surface section; 232. Second straight surface section. Detailed Implementation

[0041] 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.

[0042] 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", "level", "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.

[0043] 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.

[0044] 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.

[0045] 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 indicates that the liquid level of the first feature is higher than that of 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 indicates that the liquid level of the first feature is lower than that of the second feature.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Please see Figures 1 to 6 , Figure 11 and Figure 12To alleviate the above problems, this application provides a battery 100, which includes a battery cell 10 and an electrical connector 20. The battery cell 10 includes a terminal post 11, which includes a main body 111 and a blocking portion 112. The main body 111 has a groove 1111, which has a first sub-groove 1112 and a second sub-groove 1113 that are interconnected. The cross-sectional area of ​​the first sub-groove 1112 is larger than the cross-sectional area of ​​the second sub-groove 1113. The blocking portion 112 is disposed on the main body 111, and the projection of the blocking portion 112 on the central axis of the terminal post 11 covers part of the opening of the first sub-groove 1112. The remaining part of the opening of the first sub-groove 1112 is configured to form an inlet / outlet 1114. The blocking portion 112 is spaced apart from the bottom wall of the first sub-groove 1112 and defines a limiting groove 1115 with the bottom wall of the first sub-groove 1112. Electrical connector 20 is used to electrically connect at least two battery cells 10. Electrical connector 20 includes a busbar body 21, a plug-in portion 22, and a limiting portion 23. The plug-in portion 22 and the limiting portion 23 are both located on the side of the busbar body 21 facing the terminal post 11, and the limiting portion 23 protrudes from the peripheral side of the plug-in portion 22. The plug-in portion 22 is detachably inserted into the second sub-slot 1113. The battery 100 has a first state and a second state. When the battery 100 is in the first state, the limiting portion 23 is located in the limiting slot 1115. When the battery 100 is in the second state, the projection of the limiting portion 23 in the direction of the central axis of the terminal post 11 falls into the inlet / outlet 1114.

[0050] 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.

[0051] The battery cell 10 includes a housing 13, and terminals 11 are disposed on the housing 13 and used to output electrical energy from the battery cell 10. In this application, the terminals 11 of the battery cell 10 can be positive terminals or negative terminals, and the terminals 11 can be cylindrical, cuboid, or other structures, and the specific shape can be set according to requirements.

[0052] The groove 1111 is a stepped groove, and the cross-sectional area of ​​the first sub-groove 1112 of the groove 1111 is larger than the cross-sectional area of ​​the second sub-groove 1113. The blocking part 112 is provided on the main body 111. It can be completely located within the first sub-groove 1112, or partially located within the first sub-groove 1112 with the remaining part protruding outside the first sub-groove 1112, or it can be completely located outside the first sub-groove 1112. When the projection of the blocking part 112 on the central axis of the pole post 11 covers part of the opening of the first sub-groove 1112, its projection can only cover part of the opening of the first sub-groove 1112 and does not coincide with the opening of the second sub-groove 1113. Alternatively, the projection of the blocking part 112 can simultaneously cover part of the openings of both the first sub-groove 1112 and the second sub-groove 1113. The specific setting can be determined according to the actual situation. The remaining portion of the first sub-slot 1112 is the part of the first sub-slot 1112 not covered by the projection of the blocking part 112. The remaining portion of the first sub-slot 1112 is configured to form an inlet / outlet 1114 for the insertion part 22 and the limiting part 23 of the power supply connector 20 to enter and exit the groove 1111. The blocking part 112 and the bottom wall of the first sub-slot 1112 define a limiting groove 1115, which communicates with the first sub-slot 1112.

[0053] Electrical connector 20 is used to electrically connect at least two battery cells 10. Electrical connector 20 includes a busbar body 21, a plug-in portion 22, and a limiting portion 23. The plug-in portion 22 and the limiting portion 23 are defined to form a plug-in protrusion. The busbar body 21 has at least two plug-in protrusions, and all plug-in protrusions are spaced apart along the length of the busbar body 21. The number of plug-in protrusions 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 plug-in protrusion is plugged into the terminal post 11 of the corresponding battery cell 10.

[0054] It is understood that in the same electrical connector 20, each pair of adjacent insertion protrusions 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, each pair of adjacent insertion protrusions 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.

[0055] The battery 100 has a first state and a second state, and switching between the first state and the second state can be achieved by rotating the plug protrusion around its central axis. Generally speaking, the central axis of the plug protrusion coincides with the central axis of the terminal post 11. It is worth mentioning that before driving the plug protrusion to rotate, the busbar 21 connecting the plug protrusion to be rotated and the plug protrusion adjacent to it needs to be cut off.

[0056] When the battery 100 is in the first state, the plug portion 22 is detachably inserted into the second sub-slot 1113, and the limiting portion 23 is located in the limiting slot 1115. In this case, the blocking portion 112 restricts the movement of the limiting portion 23 in the direction of the central axis of the pole post 11, making it difficult for the limiting portion 23 and the plug portion 22 to come out of the groove 1111 of the pole post 11. Therefore, even under vibration conditions, the electrical connector 20 is not easily separated from the pole post 11, the electrical connection between the electrical connector 20 and the pole post 11 is reliable, and the safety of the battery 100 is higher. When the battery 100 is in the second state, the plug portion 22 is detachably inserted into the second sub-slot 1113, and the projection of the limiting portion 23 in the direction of the central axis of the pole post 11 falls into the inlet / outlet 1114, so that the limiting portion 23 and the plug portion 22 can be removed from the inlet / outlet 1114, thereby enabling the replacement of faulty or poorly performing battery cells 10.

[0057] Therefore, in this application, by designing the blocking part 112 and the bottom wall of the first sub-slot 1112 to form a limiting groove 1115, the limiting part 23 can change its position inside or outside the limiting groove 1115 under different states, thereby realizing the disassembly or connection between the pole post 11 and the electrical connector 20, and the connection between the pole post 11 and the electrical connector 20 is stable and reliable, which further improves the safety of the battery 100.

[0058] Please see Figure 4 , Figures 7 to 12 In some embodiments, the blocking portion 112 is located within the first sub-slot 1112 and protrudes from the sidewall of the first sub-slot 1112. The blocking portion 112 is disposed on the sidewall of the first sub-slot 1112 and protrudes towards the central axis of the first sub-slot 1112. Generally, the central axis of the first sub-slot 1112 coincides with the central axis of the pole post 11. Of course, in some other embodiments, the central axis of the first sub-slot 1112 and the central axis of the pole post 11 may be parallel but not coincident.

[0059] The blocking part 112 is located inside the first sub-slot 1112. Compared with the blocking part 112 protruding outside the first sub-slot 1112, it can reduce the scratches caused by the blocking part 112 and make the bus body 21 of the electrical connector 20 fit as closely as possible to the surface where the slot of the first sub-slot 1112 is located, thereby improving the compactness of the installation between the electrical connector 20 and the pole 11.

[0060] In some embodiments, the surface of the blocking portion 112 facing away from the bottom wall of the first sub-slot 1112 is flush with the surface of the opening of the first sub-slot 1112 on the main body 111. Therefore, after the electrical connector 20 is connected to the pole post 11, the surface of the busbar body 21 facing the pole post 11 can simultaneously fit with the main body 111 and the blocking portion 112 of the pole post 11, resulting in a large contact area between the busbar body 21 and the pole post 11 and a more compact fit.

[0061] Of course, the arrangement of the blocking part 112 is not limited to the one described above. In some other embodiments, the surface of the blocking part 112 facing away from the bottom wall of the first sub-slot 1112 may also be close to the bottom wall of the first sub-slot 1112 relative to the surface of the opening of the first sub-slot 1112 on the main body 111.

[0062] Please see Figure 4 , Figure 11 and Figure 12 In some embodiments, the projections of the blocking portion 112 and the second sub-slot 1113 onto the central axis of the pole post 11 do not overlap. That is, the projection of the blocking portion 112 onto the central axis of the pole post 11 is outside the projection of the second sub-slot 1113 onto the central axis of the pole post 11. Therefore, the blocking portion 112 does not interfere with the insertion and removal of the insertion portion 22 within the second sub-slot 1113, and in this embodiment, the shapes of the insertion portion 22 and the second sub-slot 1113 are mutually matched, which helps to achieve the stability of the fit between the insertion portion 22 and the second sub-slot 1113.

[0063] In some embodiments, the blocking portions 112 are two and are arranged radially opposite and spaced apart along the pole post 11 of the main body 111. The two blocking portions 112 form two limiting grooves 1115. In this case, when the battery 100 is in the first state, the two opposite ends of the limiting portions 23 can be respectively limited in the two limiting grooves 1115 to further prevent the limiting portions 23 and the insertion portions 22 from disengaging from the pole post 11.

[0064] Please see Figures 9 to 12 In some embodiments, the first sub-slot 1112 is a circular slot with an annular sidewall. The peripheral side of the blocking part 112 includes a first arcuate segment 1121 and a first straight segment 1122 connected end to end along its circumference. The two first arcuate segments 1121 of the two blocking parts 112 are completely fitted with the sidewall of the first sub-slot 1112. The two first straight segments 1122 of the two blocking parts 112 are arranged opposite to each other and define the entrance and exit 1114.

[0065] Preferably, the blocking portion 112 is integrally formed with the main body 111 to reduce the process steps of welding or bonding the first arc surface of the blocking portion 112 to the groove sidewall of the first sub-groove 1112. Of course, in some other embodiments, the blocking portion 112 and the main body 111 can also be formed separately.

[0066] As an example, the annular sidewall of the first sub-slot 1112 is divided into four equal parts along its circumference, each part being a 1 / 4 circle, i.e., an arc shape. The two first arc surface segments 1121 of the two blocking parts 112 are completely fitted with two of the equally divided arc shapes that are opposite to and spaced apart from the sidewall of the first sub-slot 1112. The two first straight surface segments 1122 of the two blocking parts 112 are separated from and spaced apart from the other two equally divided arc shapes that define the inlet and outlet.

[0067] In this application, the two first arcuate segments 1121 of the two blocking parts 112 are completely fitted with the sidewall of the first sub-groove 1112, resulting in a large contact area between the sidewall of the first sub-groove 1112 and the two blocking parts 112, which helps to improve the stability and reliability of the installation of the two blocking parts 112. The two first straight segments 1122 of the two blocking parts 112 are arranged opposite each other and define the entrance / exit 1114, making the formed entrance / exit 1114 relatively regular and convenient for molding.

[0068] Please see Figures 6 to 10 Furthermore, in some embodiments, the peripheral side of the limiting part 23 includes two second arcuate segments 231 and two second straight segments 232. The second arcuate segments 231 and the second straight segments 232 are alternately arranged along the circumferential direction of the peripheral side of the limiting part 23 and are connected end to end in sequence. When the battery 100 is in the first state, the second straight segment 232 is perpendicular to the first straight segment 1122, and the second arcuate segment 231 corresponds one-to-one with the limiting groove 1115 and is located in the corresponding limiting groove 1115. When the battery 100 is in the second state, the projections of the second straight segment 232 and the second arcuate segment 231 in the direction of the central axis of the pole post 11 both fall into the inlet / outlet 1114, and the second straight segment 232 is parallel to the first straight segment 1122.

[0069] Specifically, the shape of the limiting part 23 is basically the same as the shape of the inlet and outlet. When the battery 100 is in the first state, the second straight section 232 is perpendicular to the first straight section 1122. At this time, the extension direction of the limiting part 23 is also roughly perpendicular to the extension direction of the inlet and outlet. When the battery 100 is in the second state, the second straight section 232 is parallel to the first straight section 1122. At this time, the extension direction of the limiting part 23 is also roughly coincident with the extension direction of the inlet and outlet.

[0070] In this embodiment, by observing the perpendicular or parallel state of the second straight section 232 and the first straight section 1122, the state of the battery 100 can be intuitively understood, thereby knowing whether the limiting part 23 is installed in place, which can facilitate the user to accurately judge and operate the connection or disconnection of the electrical connector 20 and the terminal post 11.

[0071] Please see Figure 4 and Figure 8In some embodiments, the busbar body 21 has a through hole 211, and the plug part 22 has an anti-rotation groove 221 on the surface facing the busbar body 21, and the anti-rotation groove 221 communicates with the through hole 211.

[0072] Specifically, the shape of the anti-rotation groove 221 matches the specific form of the operating tool. For example, if the operating tool is a cross file, the anti-rotation groove 221 is a cross-shaped groove.

[0073] In actual operation, the operating end of the operating tool passes through the through hole 211 and cooperates with the anti-rotation groove 221. Under the action of external force, the operating tool drives the electrical connector 20 to rotate, so that the limiting part 23 is located in the limiting groove 1115 or exposed in the inlet and outlet 1114, thereby realizing the state switching of the battery 100 and facilitating the replacement of the battery cell 10 and the electrical connector 20.

[0074] Please see Figure 4 and Figure 12 In some embodiments, the battery cell 10 further includes an elastic contact 12 disposed in the second sub-groove 1113 and arranged circumferentially around the plug-in portion 22. The elastic contact 12 elastically abuts against the groove sidewall of the plug-in portion 22 and the groove of the second sub-groove 1113, and is electrically connected to the terminal post 11 and the plug-in portion 22.

[0075] The elastic contact 12 is disposed in the second sub-slot 1113, and when the plug 22 is inserted into the second sub-slot 1113, it abuts against the side wall of the slot between the plug 22 and the second sub-slot 1113 through deformation, so that the plug 22 can be electrically connected to the terminal post 11 through the elastic contact 12, thereby realizing the electrical connection between the battery cell 10 and the electrical connector 20.

[0076] The second sub-slot 1113, the elastic contact finger 12, and the insertion part 22 have roughly the same or similar shapes. For example, the second sub-slot 1113 and the insertion part 22 are both cylindrical, and the elastic contact finger 12 is annular; or, the second sub-slot 1113 and the insertion part 22 are both cuboids, and the elastic contact finger 12 is rectangular. The shapes of the second sub-slot 1113, the elastic contact finger 12, and the insertion part 22 can be set according to requirements.

[0077] In this application, by inserting the plug portion 22 into the elastic contact finger 12 of the second sub-slot 1113, the plug portion 22 is difficult to disengage from the elastic contact finger 12 due to the elastic force of the elastic contact finger 12. Even under vibration conditions, the plug portion 22 and the elastic contact finger 12 are not easily separated, making the electrical connection between the electrical connector 20 and the terminal 11 more reliable and improving the safety of the battery 100. In addition, each individual battery cell 100 is electrically connected to each other and supplies power to the outside through the electrical connector 20. The electrical connector 20 and the terminal 11 are connected by the elastic contact finger 12. On the one hand, the elastic contact finger 12 has elasticity, which can enhance the connection force between the electrical connector 20 and the terminal 11 and improve the overcurrent capacity. On the other hand, the elastic contact finger 12 and the terminal 11 and the electrical connector 20 are in contact connection and are detachable, so that when a single battery cell 10 has a problem, it can be replaced.

[0078] Please see Figure 13 In some embodiments, the battery 100 further includes a housing, which includes a first portion 30 and a second portion 40. The first portion 30 and the second portion 40 are connected and define a receiving cavity, in which the battery cell 10 and the electrical connector 20 are disposed. The housing is used to isolate the internal environment of the battery 100 from the external environment, so as to reduce external interference to the operation of the battery cell 10 and the electrical connector 20.

[0079] Please see Figure 14 This application also provides an electrical device 1000, which includes a battery 100 as described in any of the above embodiments, the battery 100 being used to provide electrical energy to the electrical device 1000.

[0080] The electrical device 1000 can be, but is 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.

[0081] It should be understood that the technical solutions described in the embodiments of this application are not limited to the electrical device 1000 described above.

[0082] In the aforementioned battery 100 and power device 1000, when the battery 100 is in its first state, the plug-in portion 22 is detachably inserted into the second sub-slot 1113, and the limiting portion 23 is located within the limiting groove 1115. In this situation, the blocking portion 112 restricts the movement of the limiting portion 23 along the central axis of the terminal post 11, making it difficult for the limiting portion 23 and the plug-in portion 22 to detach from the groove 1111 of the terminal post 11. Therefore, even under vibration conditions, the electrical connector 20 is not easily detached from the terminal post 11, ensuring a reliable electrical connection between the electrical connector 20 and the terminal post 11, and enhancing the safety of the battery 100. When the battery 100 is in the second state, the plug part 22 is detachably inserted into the second sub-slot 1113, and the projection of the limiting part 23 in the direction of the central axis of the pole post 11 falls into the inlet 1114, so that the limiting part 23 and the plug part 22 can be removed from the inlet 1114, thereby enabling the replacement of faulty or poorly performing battery cells 10.

[0083] 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.

[0084] 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 in that, The battery includes: A battery cell (10) includes a terminal post (11), the terminal post (11) including a body (111) and a blocking portion (112), the body (111) having a groove (1111), the groove (1111) having a first sub-groove (1112) and a second sub-groove (1113) communicating with each other, the cross-sectional area of ​​the first sub-groove (1112) being larger than the cross-sectional area of ​​the second sub-groove (1113), the blocking portion (112) being disposed on the body (111), and the projection of the blocking portion (112) in the direction of the central axis of the terminal post (11) covering part of the groove opening of the first sub-groove (1112), the remaining part of the groove opening of the first sub-groove (1112) forming an inlet / outlet (1114), the blocking portion (112) being spaced apart from the bottom wall of the first sub-groove (1112), and defining a limiting groove (1115) with the bottom wall of the first sub-groove (1112); and An electrical connector (20) is used to electrically connect at least two of the battery cells (10). The electrical connector (20) includes a busbar body (21), a plug-in portion (22), and a limiting portion (23). The plug-in portion (22) and the limiting portion (23) are both located on the side of the busbar body (21) facing the terminal post (11), and the limiting portion (23) protrudes from the peripheral side of the plug-in portion (22). The plug-in portion (22) is detachably inserted into the second sub-slot (1113). The battery has a first state and a second state. When the battery is in the first state, the limiting part (23) is located in the limiting groove (1115). When the battery is in the second state, the projection of the limiting part (23) on the central axis of the pole (11) falls into the inlet (1114).

2. The battery of claim 1, wherein, The blocking part (112) is located inside the first sub-groove (1112) and protrudes from the groove sidewall of the first sub-groove (1112).

3. The battery of claim 2, wherein, The surface of the blocking part (112) facing away from the bottom wall of the first sub-slot (1112) is flush with the surface of the opening of the first sub-slot (1112) on the main body (111).

4. The battery of claim 1, wherein, The projections of the blocking part (112) and the second sub-groove (1113) on the central axis of the pole post (11) do not overlap.

5. The battery according to claim 1, characterized in that, The blocking part (112) consists of two parts that are radially opposite to and spaced apart from each other along the pole post (11) of the main body (111).

6. The battery of claim 5, wherein, The first sub-slot (1112) is a circular slot with an annular sidewall. The peripheral side of the blocking part (112) includes a first arcuate section (1121) and a first straight section (1122) connected end to end along its circumference. The two first arcuate sections (1121) of the two blocking parts (112) are completely fitted with the sidewall of the first sub-slot (1112). The two first straight sections (1122) of the two blocking parts (112) are arranged opposite to each other and define the entrance / exit (1114).

7. The battery of claim 6, wherein, The peripheral side of the limiting part (23) includes two second arc surface segments (231) and two second straight surface segments (232). The second arc surface segments (231) and the second straight surface segments (232) are alternately arranged along the circumferential direction of the peripheral side of the limiting part (23) and are connected end to end in sequence. When the battery is in the first state, the second straight section (232) is perpendicular to the first straight section (1122), and the second arc section (231) corresponds one-to-one with the limiting groove (1115) and is located in the corresponding limiting groove (1115). When the battery is in the second state, the projections of the second straight section (232) and the second arc section (231) on the central axis of the pole post (11) both fall into the inlet / outlet (1114), and the second straight section (232) is parallel to the first straight section (1122).

8. The battery of claim 1, wherein, The main body (21) has a through hole (211), and the plug part (22) has an anti-rotation groove (221) on its surface facing the main body (21). The anti-rotation groove (221) is connected to the through hole (211).

9. The battery of claim 1, wherein, The battery cell (10) also includes an elastic contact (12), which is disposed in the second sub-slot (1113) and arranged around the circumference of the plug-in portion (22). The elastic contact (12) elastically abuts against the plug-in portion (22) and the sidewall of the second sub-slot (1113), and is electrically connected to the pole post (11) and the plug-in portion (22).

10. An electrical appliance, characterized in that, Includes a battery as described in any one of claims 1 to 9 above, the battery being used to provide electrical energy to the electrical device.

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