CN218385612U

CN218385612U - Battery pack

Info

Publication number: CN218385612U
Application number: CN202222616561.7U
Authority: CN
Inventors: 卫志达; 谢继春
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-24
Anticipated expiration: 2032-09-30

Abstract

The application provides a battery pack, including battery pack and protection circuit board, battery pack includes two at least batteries, and each battery all includes electric core, casing and utmost point post, and electric core sets up in the casing, and utmost point post extends in the casing outside. The middle of the end face of the shell is provided with a groove, the grooves corresponding to the batteries are spliced together to form a containing groove, the protection circuit board comprises a circuit board main body and a connecting part arranged on the circuit board main body, the circuit board main body is arranged in the containing groove, and the connecting part is constructed to be connected with the pole and external electronic equipment. The battery pack structure can enable the battery pack to occupy larger space, and can improve the capacity of the battery pack.

Description

Battery pack

Technical Field

The application belongs to the battery field, in particular to a battery pack.

Background

At present, electronic equipment is widely applied to daily life, and with the increasing use frequency, the increasing power consumption and the lighter and thinner volume of the electronic equipment, a battery pack is used as a core part of the electronic equipment to directly determine the performance of the electronic equipment.

In order to supply the energy of the plurality of batteries inside the battery pack to the electronic device, it is necessary to connect the plurality of batteries and the electronic device through the protection circuit board to supply the energy of the plurality of batteries to the electronic device through the protection circuit board. Specifically, one end of the protection circuit board is connected to the positive electrodes and the negative electrodes of the plurality of batteries, and the other end of the protection circuit board is connected to the electronic device, so that the battery pack supplies electric energy to the electronic device through the protection circuit board.

However, a plurality of protection circuit boards are needed for connecting a plurality of batteries and electronic equipment, and the plurality of protection circuit boards occupy larger space, so that the batteries occupy smaller space and the battery capacity is lower.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, this application provides a group battery, can make the group battery occupy bigger space, can improve the capacity of group battery.

The application provides a battery pack which comprises a battery assembly and a protection circuit board, wherein the battery assembly comprises at least two batteries, each battery comprises a battery cell, a shell and a pole, the battery cells are arranged in the shell, and the poles extend to the outer side of the shell; the pole comprises a first pole and a second pole, the groove is located between the first pole and the second pole, the grooves corresponding to adjacent batteries form a containing groove, the protection circuit board comprises a circuit board main body and a connecting portion arranged on the circuit board main body, the circuit board main body is arranged in the containing groove, and the connecting portion is connected with the poles.

Optionally, the at least two batteries include a first battery and a second battery, and the first battery and the second battery are stacked or juxtaposed.

Optionally, the pole of the first battery and the pole of the second battery are oppositely arranged; the opening of the groove corresponding to the first battery and the opening of the groove corresponding to the second battery are oppositely arranged to form a containing groove together.

Optionally, the groove is located on the side wall of the housing, where the pole is disposed, and an opening of the groove faces a side of the side wall, where the pole is disposed.

Optionally, the protective circuit board, the first battery and the second battery are fixed by injection molding or glue dripping.

Optionally, the groove corresponding to the first battery and the groove corresponding to the second battery are arranged in parallel to form a containing groove together.

Optionally, the groove is located on the side wall of the housing provided with the pole, and the groove penetrates through the two opposite sides of the side wall provided with the pole.

Optionally, the connection portion includes a first connection portion, a second connection portion, and a third connection portion; the battery pack further comprises a connecting piece, the connecting piece comprises a first connecting piece, the first connecting piece is connected in series between a first lug of the first battery and a second lug of the second battery, the first connecting portion is connected to a second lug of the first battery, and the second connecting portion is connected to a first lug of the second battery.

Optionally, the connecting member further includes a second connecting member, the first connecting member is connected in parallel between the first tab of the first battery and the first tab of the second battery, the second connecting member is connected in parallel between the second tab of the first battery and the second tab of the second battery, the first connecting portion is connected to the first connecting member, and the second connecting portion is connected to the second connecting member.

Optionally, the housing further comprises an extension, an edge of the extension extending outside the housing.

Optionally, the top surface where the circuit board main body is located does not exceed the extension portion.

Optionally, the extension part of the first battery and the extension part of the second battery are overlapped; or the extension part of the first battery and the extension part of the second battery are positioned on the same side of the batteries; alternatively, the extension of the first battery and the extension of the second battery are located on opposite sides of the batteries.

Optionally, the battery pack further includes an insulating layer connected between the circuit board main body and the groove.

Optionally, the thickness of the insulating layer is not less than the height of the extension portion.

Optionally, a protrusion is disposed on a side of the connecting portion away from the battery, and a gap is left between the protrusion and the extending portion.

Optionally, a second insulating layer is disposed between the protrusion and the housing.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery assembly provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of batteries arranged in parallel according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an extension provided in an embodiment of the present application;

fig. 6 is another schematic structural diagram of an extension portion according to an embodiment of the present disclosure.

Description of reference numerals:

100-a battery pack;

110-a battery assembly;

120-a protection circuit board;

130-a connector;

140-an insulating layer;

111-a battery;

112-electric core;

113-a housing;

114-pole;

115-a receiving groove;

116-a first battery;

117-a second battery;

1131-grooves;

1132 — an extension;

1141-a first pole column;

1142-a second pole;

121-a circuit board body;

122-a connecting portion;

1221-a first connection;

1222-a second connecting portion;

1223-a third connecting portion;

131-a first connector;

132-second connector.

Detailed Description

In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.

However, a plurality of protection circuit boards are required for connecting a plurality of batteries and electronic equipment, and the plurality of protection circuit boards occupy a large space, so that the batteries occupy a small space, and the battery capacity is low.

In order to solve the above problems, the present application provides a battery pack including a battery pack and a protection circuit board. The battery pack comprises at least two batteries, the protection circuit board is arranged in the grooves in the middle parts of the end faces of at least two battery shells, and the protection circuit board is arranged in the grooves and acts on the batteries simultaneously, so that the battery pack can occupy larger space, and the capacity of the battery pack can be improved.

The details of the present application will now be further described with reference to the accompanying drawings and detailed description.

In order to supply the energy of the plurality of batteries inside the battery pack to the electronic device, it is necessary to connect the plurality of batteries and the electronic device through the protection circuit board to supply the energy of the plurality of batteries to the electronic device through the protection circuit board. Specifically, one end of the protection circuit board is connected to the positive electrodes and the negative electrodes of the plurality of batteries, and the other end of the protection circuit board is connected to the electronic device, so that the battery pack supplies electric energy to the electronic device through the protection circuit board. However, a plurality of protection circuit boards are required for connecting a plurality of batteries and electronic equipment, and the plurality of protection circuit boards occupy a large space, so that the batteries occupy a small space, and the battery capacity is low.

The application provides a battery pack, including battery pack and protection circuit board. The battery pack comprises at least two batteries, the two batteries are stacked or arranged in parallel, the middle of the end face of the shell of each battery is provided with a groove, the grooves corresponding to the two batteries are arranged oppositely, or the grooves corresponding to the two batteries are arranged in parallel, and the battery pack can occupy larger space and improve the capacity of the battery pack because the protection circuit board is arranged in the grooves.

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application. Fig. 2 is a schematic structural diagram of a battery assembly according to an embodiment of the present disclosure. As shown in fig. 1 and 2, the battery pack 100 includes a battery assembly 110 and a protection circuit board 120, the battery assembly 110 serves as a core power supply unit of the battery pack 100 and is used for supplying power to the battery 111 and further supplying power to external electronic devices, and the protection circuit board 120 is used for connecting the internal battery assembly 110 and the external electronic devices. The battery assembly 110 includes at least two batteries 111, and the at least two batteries 111 jointly form the battery assembly 110 to provide energy to the battery pack 100.

Specifically, each battery 111 includes a battery cell 112, a casing 113, and a pole 114, where the battery cell 112 is used as a most core energy supply unit of the battery 111, and is disposed in the casing 113 for supplying energy to external electronic devices. The casing 113 serves as a protection structure outside the battery 111, and is used for protecting the internal battery cell 112 so as to prevent the internal battery cell 112 from being damaged by the outside. The pole 114 extends outside the casing 113, and can normally supply the energy of the battery cell 112 to external electronic equipment without affecting the safety of the internal battery cell 112.

Further, the middle portion of the end face of the casing 113 has a groove 1131, the grooves 1131 corresponding to the batteries 111 are jointly spliced to form the accommodating groove 115, the protection circuit board 120 includes a circuit board main body 121 and a connecting portion 122 disposed on the circuit board main body 121, the circuit board main body 121 is disposed in the accommodating groove 115 as the most core portion of the protection circuit board 120, and is used for fixing a circuit and optimizing the layout of an electrical appliance, and plays a role of a protection circuit, and the connecting portion 122 is configured to be connected with the terminal 114 and an external electronic device, so that the energy of the battery pack 100 can be smoothly provided to the external electronic device.

Because the protection circuit board 120 is disposed in the groove 1131, the protection circuit board 120 occupies less space without affecting the electrical conductivity and safety performance, and further saves more space for the battery pack 100, so that the battery pack 100 occupies more space, and the capacity of the battery pack 100 can be improved.

Optionally, the at least two batteries 111 include a first battery 116 and a second battery 117, the first battery 116 and the second battery 117 are stacked or juxtaposed, and the grooves 1131 corresponding to the first battery 116 and the grooves 1131 corresponding to the second battery 117 are communicated with each other. Specifically, the first battery 116 and the second battery 117 are stacked or arranged in parallel, and the groove 1131 corresponding to the first battery 116 and the groove 1131 corresponding to the second battery 117 are communicated with each other, because the protection circuit board 120 is arranged in the groove 1131, one protection circuit board 120 can act on the first battery 116 and the second battery 117 at the same time, and under the condition that the first battery 116 and the second battery 117 are protected at the same time, the number of the protection circuit board 120 is reduced to the maximum extent, and further, the space occupied by the protection circuit board 120 is reduced, so that the first battery 116 and the second battery 117 occupy a larger space, and the capacity of the battery pack 100 is improved.

In some alternative embodiments, the opening of the groove 1131 corresponding to the first battery 116 and the opening of the groove 1131 corresponding to the second battery 117 are oppositely disposed to form the receiving groove 115 together. Specifically, since the opening of the groove 1131 corresponding to the first battery 116 and the opening of the groove 1131 corresponding to the second battery 117 are oppositely arranged to form the accommodating groove 115 together, on one hand, the space waste caused by the dislocation of the openings of the grooves 1131 can be avoided, and further, the space occupied by the protection circuit board 120 is reduced, so that the first battery 116 and the second battery 117 occupy a larger space; on the other hand, the openings of the grooves 1131 of the first battery 116 and the second battery 117 are oppositely arranged, so that when the protection circuit board 120 is placed, the protection circuit board 120 can be completely placed in the openings of the grooves 1131 of the first battery 116 and the second battery 117, and the installation and connection of the protection circuit board 120 and the battery pack 100 are more convenient and stable.

Optionally, the groove 1131 is located on the side wall of the housing 113 where the pole 114 is disposed, and the opening of the groove 1131 faces the side of the side wall where the pole 114 is disposed. Specifically, because recess 1131 is located the casing 113 the lateral wall that is provided with utmost point post 114, and the opening of recess 1131 is towards the side that is provided with the lateral wall of utmost point post 114, can be when placing protection circuit board 120, directly place circuit board main part 121 in recess 1131 through the opening of recess 1131, make things convenient for the installation of circuit board main part 121 and battery 111, and connecting portion 122 can directly be connected with utmost point post 114 through the opening, make connecting portion 122 more convenient with being connected of utmost point post 114.

As an alternative embodiment, the groove 1131 corresponding to the first battery 116 and the groove 1131 corresponding to the second battery 117 are arranged in parallel to form the accommodating groove 115 together. Fig. 3 is a schematic structural diagram of batteries arranged in parallel according to an embodiment of the present application. As shown in fig. 3, since the groove 1131 corresponding to the first battery 116 and the groove 1131 corresponding to the second battery 117 are arranged in parallel to form the accommodating groove 115 together, a larger horizontal occupying space can be provided for the protection circuit board 120 under the condition that the occupying space of the first battery 116 and the second battery 117 is not changed, and a better protection effect can be achieved in the process that the protection circuit board 120 acts on the first battery 116 and the second battery 117.

Optionally, the thickness of the grooves 1131 is 0.5-5mm. Specifically, since the thickness of the groove 1131 is 0.5 mm to 5mm, on one hand, enough space for the protection circuit board 120 to be placed in the groove 1131 can be provided; on the other hand, the protection circuit board 120 does not occupy too much space and cause space waste.

Alternatively, the gap between the protection circuit board 120, the first battery 116, and the second battery 117 is fixed by injection molding or dropping glue. It is possible to make the connection of the protection circuit board 120, the first battery 116 and the second battery 117 more tight.

In some alternative embodiments, the groove 1131 is located on the side wall of the housing 113 where the pole 114 is located, and the groove 1131 penetrates through opposite sides of the side wall where the pole 114 is located. Specifically, the grooves 1131 penetrate through the two opposite sides of the sidewall of the terminal 114, so that the protection circuit board 120 can be more conveniently placed in the grooves 1131, and the protection circuit board 120 can be more conveniently detached. Meanwhile, when the pole 114 is connected with external electronic equipment, the pole is not obstructed by the shell 113, and the connection is more reliable.

Optionally, the pole 114 includes a first pole 1141 and a second pole 1142, the first pole 1141 and the second pole 1142 both extend outside the housing 113, and the groove 1131 is located between the first pole 1141 and the second pole 1142. Specifically, since the electrode column 114 includes the first electrode column 1141 and the second electrode column 1142, and the first electrode column 1141 and the second electrode column 1142 both extend outside the casing 113, the connection between the first electrode column 1141 and the second electrode column 1142 and the external electronic device can be more conveniently performed without affecting the safety of the internal battery cell 112, so that the energy of the battery cell 112 can be normally provided to the external electronic device.

The groove 1131 is located between the first electrode post 1141 and the second electrode post 1142, after the protection circuit board 120 is placed in the groove 1131, since the connection distance between the protection circuit board 120 and the first electrode post 1141 is the same as that between the protection circuit board 120 and the second electrode post 1142, the protection circuit board 120 can be conveniently connected with the first electrode post 1141 and the second electrode post 1142, and a connection error is not easy to occur, thereby avoiding a short circuit condition occurring after the protection circuit board 120 is connected with the first electrode post 1141 and the second electrode post 1142.

As an alternative embodiment, the connection part 122 includes a first connection part 1221, a second connection part 1222, and a third connection part 1223, and the third connection part 1223 is connected to an external electronic device. Fig. 4 is another schematic structural diagram of a battery pack provided in an embodiment of the present application. As shown in fig. 4, the battery pack 100 further includes a connecting member 130, the connecting member 130 includes a first connecting member 131, the first connecting member 131 is connected in series between a first pole 1141 of the first battery 116 and a second pole 1142 of the second battery 117, the first connecting portion 1221 is connected to the second pole 1142 of the first battery 116, and the second connecting portion 1222 is connected to the first pole 1141 of the second battery 117.

Specifically, when the first pole 1141 of the first battery 116 and the second pole 1142 of the second battery 117 are connected in series, the first pole 1141 of the first battery 116 and the second pole 1142 of the second battery 117 are connected by the first connecting member 131, the first connecting portion 1221 connects the second pole 1142 of the first battery 116 and the circuit board body, the second connecting portion 1222 connects the first pole 1141 of the second battery 117 and the circuit board body, and the third connecting portion 1223 connects the circuit board body and external electronic devices, so that the energy of the battery pack 100 is normally supplied to the external electronic devices.

As an alternative embodiment, the connection portion 122 includes a first connection portion 1221, a second connection portion 1222, and a third connection portion 1223, and the third connection portion 1223 is connected to an external electronic device. The battery pack 100 further includes a connecting member 130, the connecting member 130 includes a first connecting member 131 and a second connecting member 132, the first connecting member 131 is connected in parallel between the first pole 1141 of the first battery 116 and the first pole 1141 of the second battery 117, the second connecting member 132 is connected in parallel between the second pole 1142 of the first battery 116 and the second pole 1142 of the second battery 117, the first connecting portion 1221 is connected to the first connecting member 131, and the second connecting portion 1222 is connected to the second connecting member 132.

Specifically, when the first pole 1141 of the first battery 116 is connected in parallel with the first pole 1141 of the second battery 117, the second pole 1142 of the first battery 116 is connected in parallel with the second pole 1142 of the second battery 117, the first pole 1141 of the first battery 116 is connected with the first pole 1141 of the second battery 117 through the first connecting member 131, the second connecting member 132 is connected with the second pole 1142 of the first battery 116 and the second pole 1142 of the second battery 117, the first connecting member 1221 is further connected with the first connecting member 131 and the circuit board body, the second connecting member 1222 is connected with the circuit board body, and the third connecting member 1223 is connected with the circuit board body and external electronic equipment, so that the energy of the battery pack 100 is normally supplied to the external electronic equipment.

Optionally, the thickness of the first connecting member 131 and the second connecting member 132 is greater than or equal to 0.1mm. The connection of first battery 116 and second battery 117 can be made tighter.

Optionally, the housing 113 further includes an extension portion 1132, the extension portion 1132 is adjacent to a side wall of the housing 113 where the pole 114 is disposed, an edge of the extension portion 1132 extends outside the housing 113, and the extension portion 1132 and the connecting member 130 are disposed in an insulated manner. Specifically, because extension 1132 of casing 113 and the casing 113 be provided with the lateral wall of utmost point post 114 and adjoin, and the edge of extension 1132 extends in the casing 113 outside, extension 1132 and the mutual insulating setting of connecting piece 130 can prevent that casing 113 and connecting piece 130 from taking place the short circuit, and then prevent that battery pack 110 from taking place the short circuit.

Optionally, the height of the circuit board main body 121 is less than or equal to the height of the extension portion 1132. To save more space for the circuit board main body 121, and avoid wasting the whole space of the battery 111.

In some alternative embodiments, extensions 1132 of first battery 116 and second battery 117 are located on the same side of battery 111, and in other alternative embodiments, extensions 1132 of first battery 116 and second battery 117 are located on opposite sides of battery 111. Fig. 5 is a schematic structural diagram of an extension portion according to an embodiment of the present disclosure. Fig. 6 is another schematic structural diagram of an extension portion according to an embodiment of the present disclosure. As shown in fig. 5 and 6, the extension 1132 may be distributed differently, so as to facilitate different soldering installations between the first battery 116 and the second battery 117 and between the first battery and other external electronic devices according to actual installation connection conditions.

Optionally, the battery pack 100 further includes an insulating layer 140, and the insulating layer 140 is connected between the circuit board body 121 and the groove 1131. Specifically, the battery pack 100 further includes an insulating layer 140, the insulating layer 140 is connected between the circuit board main body 121 and the groove 1131, since the case 113 of the battery 111 is communicated with the second pole 1142 of the battery cell 112, and thus the groove 1131 is communicated with the second pole 1142 of the battery cell 112, the circuit board main body 121 is connected to the first pole 1141, the second pole 1142 and the external electronic device, and in order to avoid short circuit between the circuit board main body 121 and the case 113, between the battery cell 112 and the external electronic device, and thus affecting normal use of the battery pack 100, the insulating layer 140 is connected between the circuit board main body 121 and the groove 1131, and thus short circuit between the circuit board main body 121 and the groove 1131 can be prevented.

Optionally, the thickness of the insulating layer 140 is greater than the height of the extension 1132. Thereby preventing the protection circuit board 120 and the extension portion 1132 from being short-circuited.

Optionally, the insulating layer 140 is adhesively secured to the groove 1131. The insulating layer 140 and the groove 1131 can be fixed more firmly.

Optionally, a side of the connection part 122 facing away from the battery 111 is provided with a protrusion, and the protrusion does not contact with the extension part 1132. Thereby preventing the connection portion 122 and the extension portion 1132 from being short-circuited.

Optionally, a second insulating layer is disposed on the protrusion. A short circuit between the protrusion and the extension 1132 may be prevented.

The connection process of the battery pack 100 provided by the present application is as follows: battery pack 100 includes battery pack 110 and protection circuit board 120, and battery pack 110 includes two at least batteries 111, and two at least batteries 111 include first battery 116 and second battery 117, and first battery 116 and second battery 117 all include cell 112, casing 113 and utmost point post 114, and cell 112 sets up in casing 113, and utmost point post 114 extends outside casing 113. The case 113 has a groove 1131 in the middle of the end surface thereof, the protection circuit board 120 includes a circuit board main body 121 and a connection portion 122 provided on the circuit board main body 121, and the protection circuit board 120 is provided in the groove 1131 to connect the battery assembly 110 and an external electronic device.

The first battery 116 and the second battery 117 are stacked or juxtaposed, and the opening of the groove 1131 corresponding to the first battery 116 and the opening of the groove 1131 corresponding to the second battery 117 are disposed opposite to each other, or the groove 1131 corresponding to the first battery 116 and the groove 1131 corresponding to the second battery 117 are disposed in parallel. The corresponding grooves 1131 of the first battery 116 and the second battery 117 are jointly spliced into the receiving groove 115, the circuit board main body 121 is disposed in the receiving groove 115, and the connecting portion 122 is configured to be connected with the pole 114 and an external electronic device.

Specifically, when the first pole 1141 of the first battery 116 and the second pole 1142 of the second battery 117 are connected in series by the first connector 131 of the battery pack 100, the first connection portion 1221 of the connection portion 122 is connected to the second pole 1142 of the first battery 116, and the second connection portion 1222 is connected to the first pole 1141 of the second battery 117; alternatively, when the first pole 1141 of the first battery 116 and the first pole 1141 of the second battery 117 are connected in parallel by the first connecting member 131 of the battery pack 100, and the second pole 1142 of the first battery 116 and the second pole 1142 of the second battery 117 are connected in parallel by the second connecting member 132 of the battery pack 100, the first connecting portion 1221 of the connecting portion 122 is connected to the first connecting member 131, and the second connecting portion 1222 is connected to the second connecting member 132, so that the energy of the battery pack 100 is normally supplied to the external electronic device.

Since the protection circuit boards 120 are disposed in the grooves 1131 and one protection circuit board 120 acts on the first battery 116 and the second battery 117 at the same time, the protection circuit board 120 occupies less space without affecting the electrical conductivity and the safety performance, so as to save more space for the battery pack 100, enable the battery pack 100 to occupy more space, and improve the capacity of the battery pack 100.

The application provides a battery pack, including battery pack and protection circuit board, battery pack includes two at least batteries, and each battery all includes electric core, casing and utmost point post, and electric core sets up in the casing, and utmost point post extends in the casing outside. The end face middle part of the shell is provided with a groove, the grooves corresponding to the batteries are jointly spliced into a containing groove, the protection circuit board comprises a circuit board main body and a connecting part arranged on the circuit board main body, the circuit board main body is arranged in the containing groove, and the connecting part is constructed to be connected with a pole column and external electronic equipment. The battery pack structure of the application can enable the battery pack to occupy larger space, and can improve the capacity of the battery pack.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, are used to indicate an orientation or positional relationship based on that shown in the drawings, merely for the convenience of description and simplicity of description, and do not indicate or imply that the referenced position or element must have a particular orientation, be of particular construction and operation, and therefore, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate agent, and may be used for communicating the inside of two elements or interacting relation of two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present application may be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack is characterized by comprising a battery assembly and a protection circuit board, wherein the battery assembly comprises at least two batteries, each battery comprises a battery cell, a shell and a pole, the battery cell is arranged in the shell, and the pole extends to the outer side of the shell;

the utmost point post is including first utmost point post and second utmost point post, and the recess is located first utmost point post with between the second utmost point post, it is adjacent the recess that the battery corresponds forms the storage tank, protection circuit board include the circuit board main part with set up in connecting portion in the circuit board main part, the circuit board main part set up in the storage tank, connecting portion with utmost point post is connected.

2. The battery according to claim 1, wherein the at least two cells comprise a first cell and a second cell, the first cell and the second cell being stacked or juxtaposed.

3. The battery pack according to claim 2,

the pole of the first battery and the pole of the second battery are oppositely arranged;

the opening of the groove corresponding to the first battery and the opening of the groove corresponding to the second battery are oppositely arranged to form the accommodating groove together.

4. The battery according to claim 3, wherein the groove is located on a side wall of the housing where the pole is provided, and an opening of the groove faces a side of the side wall where the pole is provided.

5. The battery pack according to claim 4, wherein a gap between the protection circuit board, the first battery, and the second battery is fixed by injection molding or dropping glue.

6. The battery pack according to claim 4, wherein the groove corresponding to the first battery and the groove corresponding to the second battery are arranged in parallel to form the accommodating groove together.

7. The battery pack of claim 6, wherein the groove is located on the side wall of the housing where the pole is located, and the groove penetrates through opposite sides of the side wall where the pole is located.

8. The battery pack according to claim 7, wherein the connection part includes a first connection part, a second connection part, and a third connection part; the battery pack further comprises a connecting piece, the connecting piece comprises a first connecting piece, the first connecting piece is connected in series between a first pole lug of the first battery and a second pole lug of the second battery, the first connecting portion is connected to a second pole lug of the first battery, and the second connecting portion is connected to a first pole lug of the second battery.

9. The battery pack of claim 8, wherein the coupling member further comprises a second coupling member, the first coupling member being connected in parallel between a first tab of the first battery and a first tab of the second battery, the second coupling member being connected in parallel between a second tab of the first battery and a second tab of the second battery, the first coupling member being connected to the first coupling member, and the second coupling member being connected to the second coupling member.

10. The battery of claim 9, wherein said housing further comprises an extension having an edge extending outside of said housing.

11. The battery pack of claim 10, wherein the top surface of the circuit board body does not extend beyond the extension.

12. The battery of claim 11, wherein the extension of the first cell and the extension of the second cell coincide;

or the extension part of the first battery and the extension part of the second battery are positioned on the same side of the batteries;

alternatively, the extension of the first battery and the extension of the second battery are located on opposite sides of the battery.

13. The battery pack of claim 12, further comprising an insulating layer connected between the circuit board body and the recess.

14. The battery pack of claim 13, wherein the thickness of the insulating layer is not less than the height of the extension.

15. The battery according to claim 14, wherein a side of the connecting portion facing away from the battery is provided with a protrusion, and a gap is left between the protrusion and the extending portion.

16. The battery of claim 15, wherein a second insulating layer is disposed between said protrusion and said housing.