Battery and electric device

Abstract

The embodiment of the invention provides a battery and a power utilization device, the battery comprises a containing box and a battery monomer, a containing cavity is formed in the containing box, the battery monomer is arranged in the containing cavity, the containing box is provided with an avoiding area, the avoiding area protrudes in the direction away from the battery monomer to form a boss, and the inner wall of the corresponding containing cavity is sunken to form a containing groove; protrusions are formed on the outer surfaces of the battery monomers, and at least parts of the protrusions are located in the containing grooves. According to the battery in the embodiment of the invention, the avoiding area is arranged on the accommodating box, so that the bulges on the battery monomers can extend into the accommodating grooves, the three-dimensional size of the accommodating box is favorably reduced, the total volume of the battery is reduced, and the energy density and the space utilization rate of the battery are conveniently improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery and an electrical device. Background Art

[0002] In recent years, batteries, as an important part of the new energy industry, have received more and more attention.

[0003] The battery comprises a containing box and a plurality of battery cells. The plurality of battery cells are arranged in the containing box and are electrically connected to each other in series or in parallel to realize charging and discharging.

[0004] The housing of the battery cell is provided with components having various functions, and thus a protrusion is formed on the outer contour of the housing.

[0005] Due to the presence of the protrusion, the maximum dimension of the battery cell in the three-dimensional direction is larger than the maximum dimension of the shell in the three-dimensional direction. In order to completely accommodate the battery cell in the space inside the container, the space inside the container needs to be larger than the maximum dimension of the battery cell in the three-dimensional direction. Therefore, the overall three-dimensional dimension of the battery is increased, which is not conducive to the arrangement of the battery and the utilization of the space. Summary of the invention

[0006] In view of this, embodiments of the present invention are intended to provide a battery and an electrical device that can reduce the size.

[0007] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0008] An embodiment of the present invention provides a battery, which includes a storage box and a battery cell. The storage box is provided with a storage cavity, and the battery cell is arranged in the storage cavity. The storage box is provided with an avoidance area, and the avoidance area protrudes in a direction away from the battery cell to form a boss, so that the inner wall of the corresponding storage cavity is recessed to form a storage groove, and a protrusion is formed on the outer surface of the battery cell, and at least a part of the protrusion is located in the storage groove.

[0009] The battery in the embodiment of the present invention is provided with an avoidance area on the receiving box so that the protrusion on the battery cell can extend into the receiving groove, thereby helping to reduce the distance between other areas of the inner wall of the receiving cavity and the battery cell, and helping to reduce the volume of the receiving cavity; and by forming a boss, it is helpful to make the thickness of the avoidance area position consistent with the thickness of other areas on the receiving box, thereby helping to reduce the thickness of other areas on the receiving box, and further helping to reduce the three-dimensional size of the receiving box, reduce the overall volume of the battery, and facilitate improving the energy density and space utilization of the battery.

[0010] In some embodiments, the height of the boss is no more than twice the height of the raised portion in the receiving groove.

[0011] In this way, while satisfying the requirement that the space of the receiving groove can accommodate the protrusion, the size of the boss is reduced, which is beneficial to reducing the outer contour size and volume of the battery, improving the adaptability of the battery, and facilitating improving the energy density and space utilization of the battery.

[0012] In some embodiments, the distance between the side wall of the receiving groove and the protrusion is no more than 30 mm. This is conducive to reducing the size of the boss, thereby reducing the outer contour size and volume of the battery, improving the adaptability of the battery, and facilitating the improvement of the energy density and space utilization of the battery.

[0013] In some embodiments, a pole is provided on the protrusion, and the pole is located in the receiving groove and spaced apart from the inner wall of the receiving groove.

[0014] In this way, on the one hand, the pole is separated from the receiving box, which reduces the risk of short circuit in the pole and the probability of the battery colliding with the pole due to vibration, collision, etc. during operation, thereby protecting the pole; on the other hand, components such as the busbar can be arranged in the gap, thereby achieving the purpose of satisfying the normal operation of the battery while improving the space utilization of the receiving slot.

[0015] In some embodiments, the distance between the bottom wall of the receiving tank and the pole is not greater than 20 mm. In this way, on the one hand, the risk of the pole contacting the receiving box and causing a short circuit is reduced, and the probability of the battery colliding with the pole due to vibration, collision, etc. during operation is reduced; on the other hand, components such as a busbar can be arranged between the two, thereby improving the space utilization of the receiving tank.

[0016] In some embodiments, there are multiple battery cells, and the multiple battery cells are divided into at least one group. The number of the avoidance areas is the same as the number of the battery cell groups, and the protrusions of the battery cells in each group are located in the same receiving groove.

[0017] In this way, on the one hand, it is helpful to reduce the number of bosses, thereby reducing the manufacturing steps of the bosses, reducing the difficulty of assembly during battery assembly, and improving the efficiency of manufacturing operations; on the other hand, it is also convenient to use the same receiving slot to achieve electrical connection of each battery cell in the same group.

[0018] In some embodiments, the battery cells in each group are divided into two parallel rows, and the battery cells in the two rows are arranged in the same direction, the protrusion of each battery cell is located in the same receiving groove, and the protrusion is located at one end of the battery cell close to the battery cells in another row.

[0019] In this way, only an avoidance area needs to be set on the receiving box to accommodate the protrusions in the two rows of battery cells, which is beneficial to reduce the number of bosses, thereby reducing the manufacturing steps of the bosses, reducing the difficulty of assembly during battery assembly, and improving the efficiency of manufacturing operations; at the same time, it is convenient to achieve high-voltage connection between battery cells in different rows through the same receiving slot.

[0020] In some embodiments, at least one group of the battery cells is arranged along the length direction of the containing box, and the avoidance areas corresponding to the group of the battery cells are symmetrically arranged with respect to a first central plane in the width direction of the containing box.

[0021] This helps to form a large flat area on both sides of the outer surface of the containing box with a boss along the width direction of the boss, making it easier to arrange other components in the battery with larger outer contour dimensions in this area, thereby providing convenience for the arrangement of other components in the battery.

[0022] In some embodiments, at least one group of the battery cells are arranged along a first direction, and at least one group of the battery cells are arranged along a second direction, and the first direction is orthogonal to the second direction.

[0023] In this way, on the one hand, the adaptability to the sizes of different types of battery cells can be improved; on the other hand, the two groups of battery cells arranged in two orthogonal directions can further strengthen the strength of the battery, thereby improving the overall structural strength of the battery.

[0024] In some embodiments, the number of the protrusions is two, each of the protrusions is provided with a pole with opposite polarities, the two protrusions are respectively located at one end of the battery cell along the length direction of the battery cell, and the number of the avoidance areas is at least two, so that the two protrusions on the battery cell are respectively located in different receiving grooves.

[0025] In this way, the probability of short circuit caused by electrical connection between poles of different polarities due to mistaken contact or the like is reduced, thereby improving the safety of battery use.

[0026] In some embodiments, the plurality of battery cells are arranged in a row along a first direction, the number of the avoidance areas is two and both extend along the first direction, the two avoidance areas are respectively located at one end of the containing box along a second direction, and the first direction and the second direction are orthogonal.

[0027] In this way, it is convenient to form a relatively large flat area between the two avoidance areas, so that other components in the battery with relatively large outer contour dimensions can be arranged in the area, thus providing convenience for the arrangement of other components in the battery.

[0028] In some embodiments, the plurality of battery cells are divided into two rows and arranged side by side, the battery cells in each row are arranged along a first direction, the avoidance area extends along the first direction, the avoidance area is multiple and includes a first sub-area and a second sub-area, the second sub-area is located between two first sub-areas and is spaced apart from the two along the second direction, the two first areas are respectively located at one end of the containing box along the second direction, one of the protrusions of the battery cells in each row is located in the containing groove corresponding to the first sub-area, and the other protrusion and one of the protrusions of the battery cells in another row are located together in the containing groove corresponding to the first sub-area, and the first direction and the second direction are orthogonal.

[0029] In this way, it is convenient to adapt to battery cells of different sizes along the second direction, and it is convenient to electrically connect battery cells in different rows through the busbars.

[0030] In some embodiments, the battery includes a busbar, the number of the battery cells is multiple, the multiple battery cells are divided into at least one group, the battery cells in each group form a row, the protrusion is provided with a pole, the number of the poles is two and the polarities are opposite, the busbar electrically connects two poles of opposite polarities of two adjacent battery cells in each group, the poles of two adjacent battery cells in each group are correspondingly arranged, so that the poles of the battery cells in each group are arranged to form two rows, and the polarities of the poles in each row are the same, so that the battery cells of the same model are arranged in a unified arrangement direction, which is conducive to simplifying the model of the battery cells in the battery, simplifying the battery process, and reducing the production cost;

[0031] Alternatively, the polarities of two adjacent poles in each row are opposite, so that the distance between two poles with opposite polarities of adjacent battery cells in the same group is shortened, thereby facilitating shortening the connection length of the busbar.

[0032] An embodiment of the present invention further provides an electric device, which includes the battery in the above embodiment, and the battery serves as a power source for the electric device.

[0033] In this way, the above-mentioned electrical device, by adopting the battery in the aforementioned embodiment, is conducive to improving the energy density and space utilization of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of a battery in a first embodiment of the present invention;

[0035] Figure 2 for Figure 1 A schematic cross-sectional view of an embodiment of the present invention;

[0036] Figure 3 for Figure 2 A partial enlarged schematic diagram of position A in the middle;

[0037] Figure 4 for Figure 1 An exploded schematic diagram of an embodiment of the invention;

[0038] Figure 5 is a schematic diagram of a battery in a second embodiment of the present invention;

[0039] Figure 6 for Figure 5 A schematic cross-sectional view of an embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of a battery in a third embodiment of the present invention;

[0041] Figure 8 for Figure 7 A schematic cross-sectional view of an embodiment of the present invention;

[0042] Fig. 9 for Figure 7 An exploded schematic diagram of an embodiment of the invention;

[0043] Fig.10 is a schematic diagram of a battery in a fourth embodiment of the present invention;

[0044] Fig.11 for Fig.10 A schematic cross-sectional view of an embodiment of the present invention;

[0045] Fig.12 for Fig.10 An exploded schematic diagram of an embodiment of the invention;

[0046] Fig.13 is a schematic diagram of a battery in a fifth embodiment of the present invention;

[0047] Fig.14 for Fig.10 An exploded schematic diagram of an embodiment of the invention;

[0048] Fig.15 is a schematic diagram of a battery in a sixth embodiment of the present invention;

[0049] Fig.16 for Fig.15 A schematic cross-sectional view of an embodiment of the present invention;

[0050] Fig.17 for Fig.15 An exploded schematic diagram of an embodiment of the invention;

[0051] Fig.18 is a schematic diagram of a battery in a seventh embodiment of the present invention;

[0052] Fig.19 for Fig.18 An exploded schematic diagram of an embodiment of the invention;

[0053] Fig. 20 is a schematic diagram of a battery in an eighth embodiment of the present invention;

[0054] Fig.21 for Fig. 20 A schematic cross-sectional view of an embodiment of the present invention;

[0055] Fig. 22 for Fig. 20 An exploded schematic diagram of an embodiment of the invention;

[0056] Fig.23 A schematic diagram of the connection of a busbar in an embodiment of the present invention;

[0057] Fig.24 A schematic diagram of the connection of a busbar in another embodiment of the present invention;

[0058] Fig.25 It is a schematic diagram of an electrical device in one embodiment of the present invention.

[0059] Description of Reference Numerals

[0060] Battery 10; containing box 11; containing cavity 11a; avoidance area 11b; containing groove 11c; first center plane 11d; first sub-area 11e; second sub-area 11f; boss 111; box cover 112; box body 113; reinforcing beam 114; battery cell 12; protrusion 121; pole 122; busbar 13;

[0061] Vehicle 1000 ; controller 200 ; motor 300 . DETAILED DESCRIPTION

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments may be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the purpose of the present invention and should not be regarded as improper limitations on the present invention.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification of the present invention and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0064] In the description of the embodiments of the present invention, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0065] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0066] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0067] In the description of the embodiments of the present invention, the technical terms "height direction", "first direction", "second direction", "length direction", "width direction", "top", "bottom" or positional relationships are based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0068] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "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 the embodiments of the present invention can be understood according to specific circumstances.

[0069] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact or contact through an intermediate medium layer. It can be contact with essentially no interaction force between the two contacting parties, or it can be contact with interaction force between the two contacting parties.

[0070] The following is a detailed description of the embodiments of the present invention.

[0071] The battery cell has a shell, and the shell is provided with explosion-proof valves, poles and other parts. These parts protrude from the outer contour surface of the shell, forming protrusions on the shell. Due to these protrusions, the maximum dimension of the battery cell along the protruding direction of the protrusion is larger than the dimension of the shell along this direction. In order to accommodate these batteries with protrusions in the battery storage box, the dimension of the side wall of the internal space along the protruding direction of the protrusion is not less than the maximum dimension of the battery cell along the protruding direction of the protrusion, resulting in a gap between the side wall of the internal space and the shell, thus wasting the internal space of the storage box and increasing the overall volume of the battery.

[0072] An embodiment of the present invention aims to provide a battery, wherein a housing box of the battery is provided with a boss, and a space connected to a housing cavity in the housing box is provided inside the boss for accommodating the protrusion of the battery cell located in the housing cavity, thereby facilitating reducing the three-dimensional size of the housing box and improving space utilization.

[0073] Specifically, the embodiment of the present invention provides a battery 10, referring to Figures 1 to 4 The battery 10 includes a storage box 11 and a battery cell 12. The storage box 11 is provided with a storage cavity 11a, and the battery cell 12 is arranged in the storage cavity 11a. The storage box 11 is provided with an avoidance area 11b, and the avoidance area 11b protrudes in a direction away from the battery cell 12 to form a boss 111, so that the inner wall of the corresponding storage cavity 11a is recessed to form a storage groove 11c, and a protrusion 121 is formed on the outer surface of the battery cell 12, and at least a part of the protrusion 121 is located in the storage groove 11c.

[0074] The receiving box 11 forms a receiving cavity 11a for receiving the battery cell 12 and providing movable protection for the battery cell 12. Meanwhile, a heat dissipation device and a heating device may be provided in the receiving box 11 to provide a suitable working temperature for the battery cell 12.

[0075] The battery cell 12 , ie, the battery cell, refers to the smallest unit in the battery 10 that can generate electrical energy.

[0076] The number of battery cells 12 in the battery 10 is not limited, and may be one or more. The battery cells 12 are electrically connected in series or in parallel via the busbar 13 to achieve synchronous charging and discharging of the battery cells 12 .

[0077] The battery cell 12 includes a shell, an electrode assembly, a pole 122 and an explosion-proof valve. The shell provides installation space for the electrode assembly and plays a protective role. At the same time, the shell is used to inject electrolyte. The electrode assembly is provided with a positive electrode, a negative electrode and a separator. During the charge and discharge process of the battery cell 12, the active ions (such as lithium ions) in the electrolyte are embedded and removed back and forth between the positive electrode and the negative electrode and an electrochemical reaction occurs. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting and allow active ions to pass through. The pole 122 is arranged to pass through the shell, and the pole 122 is electrically connected to the electrode assembly to conduct the current generated by the electrode assembly. The explosion-proof valve can be opened selectively to open and release pressure in the event of thermal runaway of the electrode assembly, thereby reducing the probability of explosion of the battery cell 12.

[0078] The protrusion 121 on the surface of the battery cell 12 is a structure protruding from the outer surface of the shell. The specific form of the protrusion 121 is not limited, such as an explosion-proof valve, a pole 122, etc.

[0079] The avoidance area 11b is formed with a boss 111 and a receiving groove 11c, wherein the receiving groove 11c is used to receive the protrusion 121. The receiving groove 11c and the boss 111 are respectively formed on the inner and outer surfaces of the same position of the receiving box 11, that is, it is conducive to making the thickness of the avoidance area 11b consistent with the thickness of other areas on the receiving box 11.

[0080] The battery 10 in the embodiment of the present invention is provided with an avoidance area 11b on the receiving box 11 so that the protrusion 121 on the battery cell 12 can extend into the receiving groove 11c, which is beneficial to reduce the distance between other areas of the inner wall of the receiving cavity 11a and the battery cell 12, and is beneficial to reducing the volume of the receiving cavity 11a; and by forming a boss 111, it is beneficial to make the thickness of the avoidance area 11b consistent with the thickness of other areas on the receiving box 11, which is beneficial to reduce the thickness of other areas on the receiving box 11, and further It is beneficial to reduce the three-dimensional size of the receiving box 11 and reduce the overall volume of the battery 10, which is convenient to improve the energy density and space utilization of the battery 10.

[0081] The battery 10 can be used in, but is not limited to, electrical devices such as vehicles, ships, or aircraft. A power supply system of the electrical device can be composed of a battery cell or a battery in an embodiment of the invention.

[0082] The battery 10 can also be used in, but not limited to, energy storage power supply systems, vehicles, ships, aircraft and other electrical devices. The use of batteries can provide higher total energy. Moreover, the battery 10 is formed by arranging a plurality of battery cells 12 in a sealed box, thereby having more reliable dust and water resistance, and can therefore be used in scenarios where the use environment is more severe, humid, or even submerged in water.

[0083] The embodiment of the present invention provides an electric device including the battery 10 or the battery 10 for providing electric energy, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0084] In the following embodiments, for the convenience of description, an electric device according to an embodiment of the present invention is taken as an example of a vehicle 1000. The following is a description with reference to the accompanying drawings.

[0085] Fig.25 The structure diagram of a vehicle 1000 provided in one embodiment of the present invention is shown in FIG. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. Fig.25 As shown, a battery 10 is disposed inside the vehicle 1000, and the battery 10 can be disposed at the bottom, head, or tail of the vehicle 1000. The battery 10 can be used to power the vehicle 1000, for example, the battery 10 can be used as an operating power source for the vehicle 1000. The vehicle 1000 can also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 10 to power the motor 300, for example, for starting, navigating, and operating power requirements of the vehicle 1000 during driving.

[0086] In some embodiments of the present invention, the battery 10 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0087] In the battery 10, there may be multiple battery cells 12, and the multiple battery cells 12 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 12 are both connected in series and in parallel. The multiple battery cells 12 may be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 12 is placed in the receiving box 11. The battery 10 may also include other structures, for example, the battery 10 may also include a busbar 13 for realizing electrical connection between the multiple battery cells 12.

[0088] In the embodiment of the present invention, the battery cell 12 may be a secondary battery. A secondary battery refers to a battery cell 12 that can be continuously used by activating active materials by charging after the battery cell 12 is discharged.

[0089] The battery cell 12 may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiment of the present invention.

[0090] As an example, the battery cell 12 can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery, such as a hexagonal prismatic battery, etc. There is no special limitation in the embodiments of the present invention.

[0091] The battery 10 in some embodiments of the present invention is described in detail below.

[0092] It is understandable that the protrusion 121 may be completely located in the receiving groove 11c, or may be partially located in the receiving groove 11c.

[0093] There is no limitation on the specific method of forming the receiving groove 11c and the boss 111 in the avoidance area 11b. For example, the receiving box 11 is made of metal, and the receiving groove 11c and the boss 111 are formed at one time by a stamping process.

[0094] It can be understood that the protruding direction of the boss 111 is the same as the sinking direction of the receiving groove 11 c.

[0095] In some embodiments, see Figure 3 , the height of the boss 111 is not more than twice the height of the portion of the protrusion 121 in the receiving groove 11c. That is, L1≤2·L2.

[0096] The height of the boss 111 refers to the maximum dimension of the boss 111 protruding from the outer surface of the battery cell 12 along the protruding direction.

[0097] The height of the portion of the protrusion 121 in the receiving groove 11 c refers to the dimension of the protrusion 121 in the receiving groove 11 c along the protruding direction of the boss 111 .

[0098] In this way, while satisfying the requirement that the space of the accommodating groove 11c can accommodate the protrusion 121, the size of the boss 111 is reduced, which is beneficial to reducing the outer contour size and volume of the battery 10, which is beneficial to improving the adaptability of the battery 10 and facilitating improving the energy density and space utilization of the battery 10.

[0099] The specific multiple relationship between the height of the protrusion 121 in the receiving groove 11 c and the height of the boss 111 is not limited, for example, 1.2 times, 1.5 times, 2 times, etc.

[0100] It is understandable that in some embodiments, the edge of the open position of the receiving groove 11c fits with the portion of the battery cell 12 outside the protrusion 121, so that the protrusion 121 is completely located in the receiving groove 11c, thereby fully utilizing the space in the receiving groove 11c.

[0101] The specific method for measuring the height of the boss 111 is not limited. For example, the distance between the end surface of the boss 111 away from other parts of the containing box 11 along the protruding direction thereof and the outer surface of the containing box 11 is measured by a vernier caliper.

[0102] The specific method for measuring the height of the protrusion 121 is not limited. For example, the distance between the end surface of the protrusion 121 away from the other parts of the battery cell 12 along the protruding direction of the boss 111 and the outer surface of the battery cell 12 is measured by a vernier caliper.

[0103] In some embodiments, see Figure 3 , the distance between the side wall of the receiving groove 11c and the protrusion 121 is not greater than 30 mm (millimeter). That is, L3≤30 mm.

[0104] The side wall of the receiving groove 11 c refers to a portion of the inner wall of the receiving groove 11 c that is perpendicular to the sinking direction of the receiving groove 11 c .

[0105] This is beneficial for reducing the size of the boss 111 , thereby reducing the outer contour size and volume of the battery 10 , improving the adaptability of the battery 10 , and facilitating improving the energy density and space utilization of the battery 10 .

[0106] It can be understood that a gap of a certain size is formed between the side wall of the accommodating groove 11c and the protrusion 121, thereby reducing the probability of interference between the two during the installation of the battery 10 and reducing the difficulty of assembly; and other components in the battery 10 can be arranged in the formed gap, thereby improving the space utilization of the accommodating groove 11c.

[0107] The specific size of the distance between the side wall of the receiving groove 11c and the protrusion 121 is not limited, for example, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, etc.

[0108] In some embodiments, see Figure 3 A pole 122 is disposed on the protrusion 121 , and the pole 122 is located in the receiving groove 11 c and is spaced apart from the inner wall of the receiving groove 11 c .

[0109] In this way, on the one hand, the pole 122 is separated from the containing box 11, which reduces the risk of short circuit of the pole 122 and the probability of collision between the battery 10 and the pole 122 due to vibration, collision, etc. during operation, thereby protecting the pole 122; on the other hand, components such as the busbar 13 can be arranged in the gap, thereby achieving the purpose of satisfying the normal operation of the battery 10 while improving the space utilization rate of the containing slot 11c.

[0110] In some embodiments, see Figure 3 , the distance between the bottom wall of the receiving groove 11c and the pole 122 is not greater than 20 mm. In other words, L4≤20 mm.

[0111] The bottom wall of the receiving groove 11c refers to a portion of the inner wall of the receiving groove 11c that is away from the open position along the sinking direction of the receiving groove 11c.

[0112] In this way, on the one hand, the risk of short circuit caused by contact between the pole 122 and the receiving box 11 is reduced, and the probability of collision between the battery 10 and the pole 122 due to vibration, collision, etc. during operation is reduced; on the other hand, components such as the busbar 13 can be arranged between the two to improve the space utilization of the receiving slot 11c.

[0113] The specific size of the distance between the bottom wall of the accommodating groove 11 c and the pole 122 is not limited, for example, 5 mm, 10 mm, 15 mm, 20 mm, etc.

[0114] It is understandable that the specific arrangement of the protrusions 121 is related to the arrangement of the battery cells 12 .

[0115] Specifically, see Figure 4 There are multiple battery cells 12, and the multiple battery cells 12 are divided into at least one group. The number of avoidance areas 11b is the same as the number of groups of battery cells 12, and the protrusions 121 of each battery cell 12 in each group are located in the same receiving groove 11c.

[0116] The battery cells 12 in each group are arranged in the same direction.

[0117] In this way, on the one hand, it is helpful to reduce the number of bosses 111, thereby reducing the manufacturing steps of the bosses 111, reducing the difficulty of assembly during the battery 10 assembly, and improving the efficiency of the manufacturing operation; on the other hand, it is also convenient to use the same receiving groove 11c to realize the electrical connection of each battery cell 12 in the same group.

[0118] It is understandable that in each row of battery cells 12 , the battery cells 12 may be arranged at intervals or may be attached to each other to improve space utilization.

[0119] It can be understood that the extension direction of the boss 111 and the receiving groove 11 c is the same as the arrangement direction of the corresponding group of battery cells 12 .

[0120] The specific number of groups formed by the battery cells 12 is not limited. Figure 1 and Figure 4 , multiple battery cells 12 are arranged in a group, and a protrusion 121 is provided correspondingly; for example, refer to Figure 5 and Figure 6 , a plurality of battery cells 12 are arranged into two groups, and two protrusions 121 are correspondingly provided.

[0121] In some embodiments, see Figures 7 to 9 The battery cells 12 in each group are divided into two parallel rows, and the battery cells 12 in the two rows are arranged in the same direction. The protrusion 121 of each battery cell 12 is located in the same accommodating groove 11c, and the protrusion 121 is located at one end of the battery cell 12 close to the other row of battery cells 12.

[0122] That is, the protrusions 121 of the two rows of battery cells 12 are located in the same receiving groove 11 c.

[0123] In this way, only an avoidance area 11b needs to be set on the receiving box 11 to accommodate the protrusions 121 in the two rows of battery cells 12, which is beneficial to reduce the number of bosses 111, thereby reducing the manufacturing steps of the bosses 111, reducing the assembly difficulty during the assembly of the battery 10, and improving the efficiency of the manufacturing operation; at the same time, it is convenient to achieve high-voltage connection between battery cells 12 in different rows through the same receiving groove 11c.

[0124] The protrusion 121 of the battery cell 12 is located near one end of another row of battery cells 12 , which is beneficial to reduce the distance between the protrusions 121 of the two rows of battery cells 12 , thereby facilitating the reduction of the size of the boss 111 and the volume of the battery 10 .

[0125] In some embodiments, see Fig.10 , Fig.11 and Fig.12 The battery cells 12 are divided into multiple groups, and the battery cells 12 in each group are divided into two rows that are arranged in parallel and in the same direction. In each group of battery cells 12, the protrusions 121 of each battery cell 12 are located in the same receiving groove 11c, and the protrusions 121 are located at one end of the battery cell 12 close to the other row of battery cells 12. In this way, it is beneficial to adapt to battery cells 12 of different sizes when the space volume of the receiving cavity 11a is constant, so as to improve the space utilization rate of the space volume of the receiving cavity 11a.

[0126] In some embodiments, see Figure 6 , Figure 8 and Fig. 9The battery 10 includes a reinforcing beam 114, which is disposed in the accommodating cavity 11a. The reinforcing beam 114 is located between two rows of battery cells 12 and connected to the inner walls of the accommodating cavity 11a on opposite sides. The extending direction of the reinforcing beam 114 is the same as the arrangement direction of at least one row of battery cells 12. In this way, the overall structural strength of the battery 10 can be improved by providing the reinforcing beam 114, and the reinforcing beam 114 can play the role of separating different rows of battery cells 12 and constraining the positions of the battery cells 12.

[0127] It is understandable that the arrangement directions of the two rows of battery cells 12 located on both sides of the reinforcing beam 114 may be the same, for example Fig. 9 The embodiments in the embodiment; may also be different, for example Fig.14 The embodiments in .

[0128] In some embodiments, see Figure 2 and Figure 4 At least one group of battery cells 12 is arranged along the length direction of the receiving box 11 , and the avoidance areas 11 b corresponding to the group of battery cells 12 are symmetrically arranged about the first center plane 11 d in the width direction of the receiving box 11 .

[0129] The length direction of the containing box 11 refers to the direction in which the longest dimension of the containing box 11 lies among the three-dimensional dimensions.

[0130] The width direction of the containing box 11 refers to a direction perpendicular to the length direction and the gravity direction among the three-dimensional dimensions of the containing box 11 .

[0131] The first center plane 11d refers to a reference plane that is perpendicular to the width direction of the battery 10 and is located at a half-size position of the battery 10 along the width direction.

[0132] In this way, it is beneficial to form a relatively large flat area on both sides of the outer surface of the containing box 11 provided with the boss 111 along the width direction of the boss 111, so that other components with larger outer contour dimensions in the battery 10 can be arranged in this area, thereby providing convenience for the arrangement of other components in the battery 10.

[0133] In some embodiments, see Figure 4 The battery cells 12 are arranged in a group along the length direction of the container 11, and the avoidance areas 11b corresponding to the group of battery cells 12 are symmetrically arranged about the first center plane 11d in the width direction of the container 11. In this way, it is beneficial to arrange the battery cells 12 whose poles 122 are located in the middle position along the length direction of the battery cells 12, thereby shortening the current transmission path.

[0134] In some embodiments, see Figure 4 , the length direction of the battery cell 12 is the width direction of the container 11; in other embodiments, refer to Fig.12 The length direction of the battery cell 12 is the length direction of the housing box 11 .

[0135] It can be understood that the battery cells 12 at both ends of each row of battery cells 12 along the arrangement direction thereof are respectively abutted against the inner walls of the accommodating cavity 11 a at two opposite sides along the arrangement direction thereof, so as to achieve the purpose of restricting the position of the battery cells 12 .

[0136] In some embodiments, see Fig.13 and Fig.14 At least one group of battery cells 12 is arranged along a first direction, and at least one group of battery cells 12 is arranged along a second direction, and the first direction is orthogonal to the second direction.

[0137] In this way, on the one hand, the adaptability to the sizes of different types of battery cells 12 can be improved; on the other hand, the two groups of battery cells 12 arranged in two directions orthogonal to each other can further strengthen the strength of the battery 10, thereby improving the overall structural strength of the battery 10.

[0138] The specific directions of the first direction and the second direction are not limited. For example, see Figure 1 , the first direction is the length direction of the battery 10 , and the second direction is the width direction of the battery 10 .

[0139] In some embodiments, see Fig.18 and Fig.19 , two groups of battery cells 12 are arranged along the first direction, two groups of battery cells 12 are arranged along the second direction, and in the two groups of battery cells 12 arranged in the same direction, the protrusion 121 is located at one end of the battery cell 12 close to another row of battery cells 12. In this way, while improving the overall structural strength of the battery 10, it is beneficial to reduce the number of bosses 111, and it is convenient to achieve high-voltage connection between battery cells 12 in different rows in the same arrangement direction through the same accommodating groove 11c.

[0140] In some embodiments, see Figure 4 A group of battery cells 12 are arranged along the length direction of the battery 10, and each battery cell 12 is in contact with the inner walls of the accommodating cavity 11a along the width direction of the battery 10, thereby effectively improving the space utilization efficiency in the accommodating cavity 11a and facilitating improving the overall structural strength of the battery 10.

[0141] In some embodiments, see Fig.15 , Fig.16 and Fig.17There are two protrusions 121, each protrusion 121 is provided with a pole 122 with opposite polarities, the two protrusions 121 are respectively located at one end of the battery cell 12 along the length direction of the battery cell 12, and the number of the avoidance areas 11b is at least two, so that the two protrusions 121 on the battery cell 12 are respectively located in different accommodating grooves 11c.

[0142] That is to say, the two poles 122 of different polarities are respectively located in different receiving grooves 11 c.

[0143] The length direction of the battery cell 12 refers to the direction of the largest dimension among the three-dimensional dimensions of the battery cell 12 .

[0144] In this way, the probability of short circuit caused by electrical connection between poles 122 of different polarities due to erroneous contact or the like is reduced, thereby improving the safety of the battery 10 .

[0145] In some embodiments, see Fig.17 , multiple battery cells 12 are arranged in a row perpendicular to the length direction of the battery cells 12, and the protrusions 121 on one side along the length direction of the battery cells 12 are located in the same receiving groove 11c. In this way, the poles 122 on the protrusions 121 adjacent to each other along the arrangement direction of the battery cells 12 in the same receiving groove 11c have opposite polarities, so that the poles 122 with different polarities can be electrically connected through the busbar 13 in the same receiving groove 11c, which is conducive to reducing the size of the busbar 13 and simplifying the arrangement of the busbar 13.

[0146] In some embodiments, see Figures 15 to 17 , multiple battery cells 12 are arranged in a row along the first direction, the number of avoidance areas 11b is two and both extend along the first direction, the two avoidance areas 11b are respectively located at one end of the storage box 11 along the second direction, and the first direction is orthogonal to the second direction.

[0147] In this way, a relatively large flat area is formed between the two avoidance areas 11 b, so that other components with relatively large outer contours in the battery 10 can be arranged in the area, thereby facilitating the arrangement of other components in the battery 10 .

[0148] In some embodiments, see Fig. 20 , Fig.21 and Fig. 22, multiple battery cells 12 are divided into two rows and arranged side by side, the battery cells 12 in each row are arranged along the first direction, the avoidance area 11b extends along the first direction, the avoidance area 11b is multiple and includes a first sub-area 11e and a second sub-area 11f, the second sub-area 11f is located between the two first sub-areas 11e and is spaced apart from the two along the second direction, the two first areas are respectively located at one end of the containing box 11 along the second direction, a protrusion 121 of the battery cell 12 in each row is located in the containing groove 11c corresponding to the first sub-area 11e, and another protrusion 121 and a protrusion 121 of the battery cell 12 in another row are jointly located in the containing groove 11c corresponding to the first sub-area 11e, and the first direction and the second direction are orthogonal.

[0149] The first sub-region 11 e refers to the protrusion 121 on one row of battery cells 12 accommodated in the corresponding accommodation groove 11 c and located away from the other row of battery cells 12 .

[0150] The second sub-region 11f refers to the protrusions 121 on one row of battery cells 12 accommodated in the corresponding accommodation groove 11c, which are close to the side of another row of battery cells 12, and one of the two protrusions 121 of each battery cell 12 is located therein.

[0151] That is, of the two protrusions 121 of each battery cell 12, one protrusion 121 is located in the receiving groove 11c corresponding to the first sub-region 11e, and the other protrusion 121 and the protrusions 121 of the battery cells 12 in another row are located in the receiving groove 11c corresponding to the second sub-region 11f.

[0152] In this way, it is convenient to adapt to battery cells 12 of different sizes along the second direction, and it is convenient to electrically connect battery cells 12 in different rows through the busbars 13 .

[0153] It can be understood that a relatively large flat area is formed between the two first sub-areas 11e and the second sub-area 11f, which facilitates the arrangement of other components with relatively large outer contour dimensions in the battery 10, thus providing convenience for the arrangement of other components in the battery 10.

[0154] The specific manner of connecting the poles 122 of each battery cell 12 through the busbar 13 .

[0155] In some embodiments, see Fig.23The battery 10 includes a busbar 13, a plurality of battery cells 12, the plurality of battery cells 12 are divided into at least one group, the battery cells 12 in each group form a row, a pole 122 is provided on the protrusion 121, the number of the poles 122 is two and the polarities are opposite, the busbar 13 electrically connects two poles 122 of opposite polarities of two adjacent battery cells 12 in each group, the poles 122 of two adjacent battery cells 12 in each group are arranged correspondingly, so that the poles 122 of the battery cells 12 in each group are arranged to form two rows, and the polarities of the poles 122 in each row are the same.

[0156] In this way, the battery cells 12 of the same type can be arranged in a unified arrangement direction, which is beneficial to simplifying the types of the battery cells 12 in the battery 10 , simplifying the process of the battery 10 , and reducing the production cost.

[0157] Understandably, see Fig.23 The poles 122 of adjacent battery cells 12 in each group are electrically connected by using a bevel connection of the busbar 13 .

[0158] In some embodiments, see Fig.24 The battery 10 includes a busbar 13, a plurality of battery cells 12, the plurality of battery cells 12 are divided into at least one group, the battery cells 12 in each group form a row, a pole 122 is provided on the protrusion 121, the number of the poles 122 is two and the polarities are opposite, the busbar 13 electrically connects two poles 122 of opposite polarities of two adjacent battery cells 12 in each group, the poles 122 of two adjacent battery cells 12 in each group are correspondingly arranged, so that the poles 122 of the battery cells 12 in each group are arranged to form two rows, and the polarities of two adjacent poles 122 in each row are opposite.

[0159] In this way, the distance between two poles 122 with opposite polarities of adjacent battery cells 12 in the same group can be shortened, thereby facilitating shortening the connection length of the busbar 13 .

[0160] In some embodiments, see Figure 4 , Fig. 9 , Fig.12 , Fig.14 , Fig.17 , Fig.19 and Fig. 22 The storage box 11 includes a box cover 112 and a box body 113. The box cover 112 is placed on the top of the box body 113 to form a storage cavity 11a. The box cover 112 and the box body 113 are detachably connected to facilitate placing the battery cell 12 into the storage cavity 11a.

[0161] The avoidance area 11 b may be provided only on the box cover 112 ; may be provided only on the box body 113 ; or may be provided on both the box cover 112 and the box body 113 .

[0162] In some embodiments, the avoidance area 11 b is disposed on the top of the containing box 11 to reduce the probability of the boss 111 being compressed and deformed under the action of gravity.

[0163] Eight specific embodiments are briefly introduced below with reference to the accompanying drawings.

[0164] First embodiment

[0165] See also Figures 1 to 4 A plurality of battery cells 12 are arranged in a group along the length direction of the storage box 11. The number of avoidance areas 11b is one and extends along the length direction of the storage box 11. The protrusion 121 of each battery cell 12 is located in the same storage groove 11c. The avoidance areas 11b are symmetrically arranged about the first center plane 11d in the width direction of the storage box 11.

[0166] Second embodiment

[0167] See also Figure 5 and Figure 6 A plurality of battery cells 12 are arranged in two groups along the width direction of the storage box 11. The number of avoidance areas 11b is two and they extend along the width direction of the storage box 11. The protrusions 121 of each group of battery cells 12 are located in the storage grooves 11c corresponding to the same avoidance area 11b.

[0168] Third embodiment

[0169] See also Figures 7 to 9 , multiple battery cells 12 are arranged in two side-by-side groups along the length direction of the storage box 11, the number of avoidance areas 11b is one and extends along the length direction of the storage box 11, the protrusion 121 of each battery cell 12 is located in the same storage groove 11c, and the protrusion 121 is located at one end of the battery cell 12 close to another row of battery cells 12.

[0170] Fourth embodiment

[0171] See also Figures 10 to 12 A plurality of battery cells 12 are arranged in four groups side by side along the width direction of the storage box 11. The number of avoidance areas 11b is two and they extend along the width direction of the storage box 11. The two avoidance areas 11b are spaced apart along the length direction of the storage box 11. The protrusions 121 of every two groups of battery cells 12 are located in the storage grooves 11c corresponding to the same avoidance area 11b, and the protrusions 121 are located at one end of the battery cell 12 close to another row of battery cells 12.

[0172] Fifth embodiment

[0173] See also Fig.13 and 14, multiple battery cells 12 are divided into two groups, one group is arranged along the length direction of the storage box 11, and the other group is arranged along the width direction of the storage groove 11c. The number of avoidance areas 11b is two, and one extends along the length direction of the storage box 11, and the other extends along the width direction of the storage groove 11c. The protrusions 121 of a group of batteries 10 arranged along the length direction are located in the storage groove 11c corresponding to the avoidance area 11b extending along the length direction, and the protrusions 121 of a group of batteries 10 arranged along the width direction are located in the storage groove 11c corresponding to the avoidance area 11b extending along the width direction.

[0174] Sixth embodiment

[0175] See also Figures 15 to 17 , multiple battery cells 12 are arranged as a group along the length direction of the storage box 11, the two protrusions 121 of the battery cell 12 are respectively located at one end of the battery cell 12 along the length direction of the box body 113, the number of avoidance areas 11b is two and both extend along the length direction of the storage box 11, the two avoidance areas 11b are respectively located at one end of the storage box 11 along the width direction, and the two protrusions 121 on the battery cell 12 are respectively located in the storage grooves 11c corresponding to different avoidance areas 11b.

[0176] Seventh embodiment

[0177] See also Fig.18 and Fig.19 , multiple battery cells 12 are divided into a group arranged along the length direction of the storage box 11, and a group arranged along the width direction of the storage box 11. The battery cells 12 in each group are divided into two parallel rows. The number of avoidance areas 11b is two, and one extends along the length direction of the storage box 11, and the other extends along the width direction of the storage groove 11c. The protrusion 121 of a group of batteries 10 arranged along the length direction is located in the storage groove 11c corresponding to the avoidance area 11b extending along the length direction, and the protrusion 121 of a group of batteries 10 arranged along the width direction is located in the storage groove 11c corresponding to the avoidance area 11b extending along the width direction, and the protrusion 121 in the two groups of battery cells 12 with the same arrangement direction is located at one end of the battery cell 12 close to the other row of battery cells 12.

[0178] Eighth embodiment

[0179] See also Figure 20 to Figure 22, multiple battery cells 12 are divided into two rows and arranged side by side, the battery cells 12 in each row are arranged along the length direction of the storage box 11, the avoidance area 11b extends along the length direction of the storage box 11, the avoidance area 11b is multiple and includes a first sub-area 11e and a second sub-area 11f, the second sub-area 11f is located between the two first sub-areas 11e and is spaced apart from the two along the width direction of the storage box 11, the two first areas are respectively located at one end of the storage box 11 along the width direction of the storage box 11, a protrusion 121 of the battery cell 12 in each row is located in the storage groove 11c corresponding to the first sub-area 11e, and another protrusion 121 and a protrusion 121 of the battery cell 12 in another row are located together in the storage groove 11c corresponding to the first sub-area 11e.

[0180] The embodiment of the present invention further provides an electric device, which includes the battery 10 in the above embodiment, and the battery 10 serves as a power source for the electric device.

[0181] In this way, by adopting the battery 10 in the aforementioned embodiment, it is beneficial to improve the energy density and space utilization of the battery 10.

[0182] The various embodiments / implementations provided by the present invention can be combined with each other without causing any contradiction.

[0183] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery, characterized in that: The battery includes a storage box and a battery cell. The storage box is provided with a storage cavity, and the battery cell is arranged in the storage cavity. The storage box is provided with an avoidance area, and the avoidance area protrudes in a direction away from the battery cell to form a boss, so that the inner wall of the corresponding storage cavity is recessed to form a storage groove, and a protrusion is formed on the outer surface of the battery cell, and at least a part of the protrusion is located in the storage groove.

2. The battery according to claim 1, characterized in that The height of the boss is no more than twice the height of the raised portion in the receiving groove.

3. The battery according to claim 1, characterized in that The distance between the side wall of the receiving groove and the protrusion is no more than 30 mm.

4. The battery according to claim 1, characterized in that The protrusion is provided with a pole, and the pole is located in the receiving groove and is spaced apart from the inner wall of the receiving groove.

5. The battery according to claim 4, characterized in that The distance between the bottom wall of the accommodating groove and the pole is no more than 20 mm.

6. The battery according to claim 1, characterized in that There are a plurality of battery cells, and the plurality of battery cells are divided into at least one group. The number of the avoidance areas is the same as the number of the groups of battery cells, and the protrusions of the battery cells in each group are located in the same accommodating groove.

7. The battery according to claim 6, characterized in that The battery cells in each group are divided into two parallel rows, and the battery cells in the two rows are arranged in the same direction. The protrusion of each battery cell is located in the same receiving groove, and the protrusion is located at one end of the battery cell close to the battery cells in another row.

8. The battery according to claim 6, characterized in that At least one group of the battery cells is arranged along the length direction of the containing box, and the avoidance areas corresponding to the group of the battery cells are symmetrically arranged with respect to a first central plane in the width direction of the containing box.

9. The battery according to claim 6, characterized in that At least one group of the battery cells is arranged along a first direction, and at least one group of the battery cells is arranged along a second direction, and the first direction is orthogonal to the second direction.

10. The battery according to claim 1, characterized in that The number of the protrusions is two, each of the protrusions is provided with a pole with opposite polarities, the two protrusions are respectively located at one end of the battery cell along the length direction of the battery cell, and the number of the avoidance areas is at least two, so that the two protrusions on the battery cell are respectively located in different receiving grooves.

11. The battery according to claim 10, characterized in that The battery cells are arranged in a row along a first direction. There are two avoidance areas, both extending along the first direction. The two avoidance areas are respectively located at one end of the container along a second direction. The first direction and the second direction are orthogonal.

12. The battery according to claim 10, characterized in that The plurality of battery cells are divided into two rows and arranged side by side, the battery cells in each row are arranged along a first direction, the avoidance area extends along the first direction, the avoidance area is multiple and includes a first sub-area and a second sub-area, the second sub-area is located between the two first sub-areas and is spaced apart from the two along the second direction, the two first areas are respectively located at one end of the containing box along the second direction, one of the protrusions of the battery cells in each row is located in the containing groove corresponding to the first sub-area, and the other protrusion and one of the protrusions of the battery cells in another row are located together in the containing groove corresponding to the first sub-area, and the first direction and the second direction are orthogonal.

13. The battery according to claim 1, characterized in that The battery includes a busbar, the number of the battery cells is multiple, the multiple battery cells are divided into at least one group, the battery cells in each group form a row, the protrusion is provided with a pole, the number of the poles is two and the polarities are opposite, the busbar electrically connects two poles of opposite polarities of two adjacent battery cells in each group, the poles of two adjacent battery cells in each group are correspondingly arranged, so that the poles of the battery cells in each group are arranged to form two rows, and the polarities of the poles in each row are the same; Alternatively, the polarities of two adjacent poles in each row are opposite.

14. An electrical device, characterized in that: The electrical device comprises the battery according to any one of claims 1 to 13, and the battery serves as a power source for the electrical device.

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