阅读说明：本技术 电池的装配方法及电池包 (Battery assembling method and battery pack ) 是由 杨培 刘明明 于 2021-08-02 设计创作，主要内容包括：本公开涉及电池技术领域,具体是关于一种电池的装配方法及电池包,所述电池的装配方法包括：将N个电池中的M个电池放入所述容置空间,使M个电池沿从第一梁到第二梁的方向排布,其中,N≥2,1≤M<N；向M个电池中远离第一梁的电池的远离第一梁的面施加第一预设压力,以使M个电池处于预设位置；至少向所述M个电池中远离第一梁的电池的顶面施加第二预设压力,并撤去所述第一预设压力,使所述M个电池保持在预设位置；将N个电池中剩余的N-M个电池放入所述第二梁和所述M个电池中远离第一梁的电池之间,并撤去所述第二预设压力。能够提高电池装配入箱的便利性。(The disclosure relates to the technical field of batteries, in particular to a battery assembly method and a battery pack, wherein the battery assembly method comprises the following steps: putting M batteries of the N batteries into the accommodating space, and enabling the M batteries to be arranged along the direction from the first beam to the second beam, wherein N is more than or equal to 2, and M is more than or equal to 1 and less than N; applying a first preset pressure to the surface, far away from the first beam, of the batteries, far away from the first beam, in the M batteries so as to enable the M batteries to be in preset positions; applying a second preset pressure to at least the top surfaces of the M batteries far away from the first beam, and removing the first preset pressure to keep the M batteries at preset positions; and putting the rest N-M batteries in the N batteries between the second beam and the battery far away from the first beam in the M batteries, and removing the second preset pressure. The convenience of battery assembly into the box can be improved.)

1. A battery assembling method is used for installing N batteries into a battery box, the battery box comprises a first beam and a second beam which are oppositely arranged, and an accommodating space for installing the batteries is arranged between the first beam and the second beam, and the battery assembling method comprises the following steps:

putting M batteries of the N batteries into the accommodating space, and enabling the M batteries to be arranged along the direction from the first beam to the second beam, wherein N is more than or equal to 2, and M is more than or equal to 1 and less than N;

applying a first preset pressure to the surface, far away from the first beam, of the batteries, far away from the first beam, in the M batteries so as to enable the M batteries to be in preset positions;

applying a second preset pressure to at least the top surfaces of the M batteries far away from the first beam, and removing the first preset pressure to keep the M batteries at preset positions;

and putting the rest N-M batteries in the N batteries between the second beam and the battery far away from the first beam in the M batteries, and removing the second preset pressure.

2. The method of assembling a battery of claim 1, wherein said placing M of the N batteries into the receiving space such that the M batteries are arranged in a direction from the first beam to the second beam comprises:

and putting a battery into the accommodating space every time until M batteries are all put into the accommodating space, wherein after putting a battery into the accommodating space, applying a first preset pressure to one surface of the battery, which is far away from the first beam, and when the battery is at a preset position under the first preset pressure, applying a second preset pressure to the top surface of the battery so as to keep the battery at the preset position and remove the first preset pressure applied to the battery, wherein M is N-1.

3. The method of assembling a battery of claim 2, wherein removing the second predetermined pressure comprises:

removing the second predetermined pressure applied to the top surface of each of the M cells.

4. The method of assembling a battery according to claim 1, wherein when M < N-1, the method of assembling a battery further comprises:

and connecting the rest N-M batteries in the N batteries.

5. The method of assembling a battery of claim 1, further comprising:

and adhering the battery to the bottom of the battery box.

6. The method of assembling a battery according to claim 5, further comprising:

and gluing the bottom surface of the battery to form a connecting glue layer on the bottom surface of the battery.

7. The method of assembling a battery of claim 1, further comprising:

a cushioning pad is formed between opposing surfaces of adjacent two of the N batteries.

8. The method of assembling a battery of claim 7, wherein said forming a cushion between opposing surfaces of adjacent ones of said N batteries comprises:

the buffer pad is attached to one surface of each of the N-1 batteries.

9. The method of assembling a battery of claim 7, wherein said disposing a buffer between opposing first surfaces of two adjacent ones of said N batteries comprises:

after one or more batteries are placed in each accommodating space, one cushion pad is placed on one side, away from the first beam, of each battery.

10. A battery pack, comprising:

the battery box comprises a first beam and a second beam which are oppositely arranged, and an accommodating space is formed between the first beam and the second beam;

n batteries, which are assembled in the receiving space by the method of any one of claims 1 to 9.

Technical Field

The disclosure relates to the technical field of batteries, in particular to a battery assembly method and a battery pack.

Background

With the development and progress of the technology, the electric vehicle is more and more widely applied. Currently, there is a problem that the duration of an electric vehicle is short due to limitations of battery energy density and the like, and one solution is to directly place a battery in a storage box that stores the battery. However, the battery is directly placed in the battery box, so that the installation difficulty is high.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure is directed to a battery assembly method and a battery pack, which can improve the convenience of battery assembly at least to some extent.

According to one aspect of the present disclosure, there is provided

A battery assembling method is used for installing N batteries into a battery box, the battery box comprises a first beam and a second beam which are oppositely arranged, and an accommodating space for installing the batteries is arranged between the first beam and the second beam, and the battery assembling method comprises the following steps:

putting M batteries of the N batteries into the accommodating space, and enabling the M batteries to be arranged along the direction from the first beam to the second beam, wherein N is more than or equal to 2, and M is more than or equal to 1 and less than N;

applying a first preset pressure to the surface, far away from the first beam, of the batteries, far away from the first beam, in the M batteries so that the batteries, far away from the first beam, in the M batteries are located at a preset position;

applying a second preset pressure to at least the top surfaces of the batteries far away from the first beam in the M batteries, and removing the first preset pressure to keep the batteries far away from the first beam in the M batteries at a preset position;

and putting the rest N-M batteries in the N batteries between the second beam and the battery far away from the first beam in the M batteries, and removing the second preset pressure.

According to the assembling method of the battery, the M batteries in the N batteries are placed in the accommodating space, the first preset pressure is applied to the surface, far away from the first beam, of the battery far away from the first beam in the M batteries, the battery far away from the first beam in the M batteries is located at the preset position, the second preset pressure is applied to the top surface, far away from the first beam, of the battery in the M batteries at least, the M batteries are positioned, the remaining N-M batteries are convenient to place in the battery box, the N batteries are directly installed in the battery box, and convenience in assembling is improved.

According to another aspect of the present disclosure, there is provided a battery pack including:

the battery box comprises a first beam and a second beam which are oppositely arranged, and an accommodating space is formed between the first beam and the second beam;

the N batteries are assembled in the accommodating space through the method.

According to the battery pack provided by the embodiment of the disclosure, the batteries are assembled through the assembling method of the batteries, in the assembling method of the batteries, the M batteries in the N batteries are placed in the accommodating space, the first preset pressure is applied to the surface, far away from the first beam, of the battery far away from the first beam in the M batteries, the battery far away from the first beam in the M batteries is located at the preset position, the second preset pressure is applied to at least the top surface, far away from the first beam, of the battery in the M batteries, the positioning of the M batteries is realized, the remaining N-M batteries are convenient to place in the battery box, the N batteries are directly arranged in the battery box, and the assembling convenience is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a flowchart of a first method for assembling a battery according to an exemplary embodiment of the present disclosure;

fig. 2 is a process diagram of a first method for assembling a battery according to an exemplary embodiment of the present disclosure;

fig. 3 is a process diagram of a second method for assembling a battery according to an exemplary embodiment of the present disclosure;

fig. 4 is a flowchart of a second method of assembling a battery provided in an exemplary embodiment of the present disclosure;

fig. 5 is a flowchart of an assembly method of a third battery according to an exemplary embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

The present exemplary embodiment of the disclosure first provides a method for assembling a battery, as shown in fig. 1 and 2, for installing N batteries 120 into a battery box 110, where the battery box 110 includes a first beam 111 and a second beam 112 that are oppositely disposed, and an accommodating space for installing the battery is provided between the first beam 111 and the second beam 112, and the method for assembling the battery may include the steps of:

s110, putting M batteries in the N batteries into the accommodating space, and enabling the M batteries to be arranged along the direction from the first beam to the second beam, wherein N is more than or equal to 2, and M is more than or equal to 1 and less than N;

step S120, applying a first preset pressure to the surface, far away from the first beam, of the batteries, far away from the first beam, in the M batteries so as to enable the M batteries to be located at preset positions;

step S130, applying second preset pressure to at least the top surfaces of the batteries, far away from the first beam, in the M batteries, and removing the first preset pressure to keep the M batteries at preset positions;

step S140, putting the remaining N-M batteries of the N batteries between the second beam and the battery far from the first beam among the M batteries, and removing the second preset pressure.

According to the assembling method of the battery, the M batteries in the N batteries are placed in the accommodating space, the first preset pressure is applied to the surface, far away from the first beam, of the battery far away from the first beam in the M batteries, the battery far away from the first beam in the M batteries is located at the preset position, the second preset pressure is applied to the top surface, far away from the first beam, of the battery in the M batteries at least, the M batteries are positioned, the remaining N-M batteries are convenient to place in the battery box, the N batteries are directly installed in the battery box, and convenience in assembling is improved.

The battery box 110 in the embodiment of the present disclosure includes a bottom plate and a plurality of beams connected to the bottom plate, and at least one receiving space is formed on the bottom plate, and a plurality of batteries are mounted in each receiving space.

The base plate may be a flat plate structure or an approximately flat plate structure, for example, the base plate may be a stainless steel plate or an aluminum alloy plate. The bottom plate is provided with an accommodating area which is used for placing a battery or a battery pack. The orthographic projection of the battery or the battery pack on the bottom plate is located in the accommodating area, the battery or the battery pack may be directly placed in the accommodating area, or other devices, such as a cooling device, may also be arranged between the battery or the battery pack and the bottom plate, which is not specifically limited in this embodiment of the disclosure.

The beams are arranged on one side of the bottom plate with the containing area, the beams are criss-cross, and a plurality of containing spaces are formed in the containing area. For example, the plurality of criss-cross beams can separate the accommodating areas to form four accommodating spaces, and a plurality of batteries are arranged in each accommodating space. Of course, in practical applications, the number of the accommodating spaces formed by the bottom plate and the beam may also be other numbers, for example, one, two, or six, and the like, and the embodiment of the disclosure is not limited thereto.

It should be noted that, in the embodiment of the present disclosure, only one accommodating space is described for installing a battery, and the method for installing batteries in the remaining accommodating spaces is consistent therewith. The first beam 111 and the second beam 112 in the embodiment of the present disclosure refer to beams of the cell case 110 at both ends in the cell arrangement direction, respectively.

The following will describe in detail the steps of the method for assembling a battery provided by the embodiments of the present disclosure:

in step S110, M cells of the N cells may be placed in the accommodating space, so that the M cells are arranged along a direction from the first beam to the second beam, where N is greater than or equal to 2, and M is greater than or equal to 1 and less than N.

Wherein, N and M are positive integers, and the M batteries can be manually placed into the battery box 110, or can be placed into the battery box 110 through a clamp. The M batteries may be placed in the battery box 110 as a whole, or may be placed in the battery box 110 one by one.

The battery 120 in the embodiment of the present disclosure may be a rectangular parallelepiped battery, and the battery 120 includes two opposite first surfaces and four second surfaces surrounding the first surfaces, and the area of the first surfaces is larger than that of the second surfaces.

In a possible implementation manner of the embodiment of the present disclosure, as shown in fig. 2, the M batteries are integrally placed in the battery box 110, and at this time, the step S110 may be implemented as follows: when the M batteries are placed in the battery box 110 through the clamp, the remaining N-M batteries are not placed in the battery box 110, the M batteries are placed in the battery box 110 through the clamp as a whole, and the inside of the battery box 110 is provided with a space for the clamp to go in and out. M batteries are arranged in sequence to form a battery array, the clamp comprises a first clamping jaw and a second clamping jaw, the first clamping jaw and the second clamping jaw clamp two ends of the battery array respectively, and certain pretightening force is applied to the battery array. The first and second jaws release the battery after it is loaded into the battery box 110 and exit the battery box 110.

Wherein the first jaw is in contact with a first surface of the first battery and the second jaw is in contact with a first surface of the second battery. The first battery is a battery in the battery array near the first beam, and the second battery is a battery in the battery array near the second beam. When the M cells are arranged, the first surfaces of the adjacent two cells are opposite. When the M batteries are disposed in the battery box 110, the first surfaces of the batteries and the end surfaces of the first beams 111 close to the batteries are disposed in parallel.

In another possible implementation manner of the embodiment of the present disclosure, as shown in fig. 3, M batteries may be put in one by one, and step S110 may be implemented as follows: and putting a battery into the accommodating space every time until M batteries are all put into the accommodating space, wherein after putting a battery into the accommodating space, a first preset pressure is applied to the surface, far away from the first beam 111, of the battery, and when the battery is at a preset position under the first preset pressure, a second preset pressure is applied to the top surface of the battery, so that the battery is kept at the preset position, and the first preset pressure applied to the surface, far away from the first beam 111, of the battery is removed, wherein M is N-1.

When a first preset pressure is applied to the side of the battery box 110 away from the first beam 111 after a first battery is placed, the direction of the preset pressure is along the direction from the second beam 112 to the first beam 111, and the battery moves towards the direction close to the first beam 111 under the driving of the first preset pressure on the side away from the first beam 111, and finally reaches the preset position. When the battery reaches the preset position, a second preset pressure is applied to the top surface of the battery, at which the battery and the battery case 110 are maintained at the preset position.

For example, after the first battery is placed in the battery box 110, a first preset pressure is applied to a first surface of the first battery away from the first beam 111, the first battery abuts against the first beam 111 under the first preset pressure, and when the first battery is in the set position, a second preset pressure is applied to a top surface of the first battery and the first preset pressure is removed. Then, a second battery is placed in the battery box 110, a first preset pressure is applied to the first surface, away from the first beam 111, of the second battery, the second battery abuts against the first battery under the first preset pressure, when the second battery is located at a preset position, a second preset pressure is applied to the top surface of the second battery, the first preset pressure is removed, and the rest is conducted until the Mth battery is placed in the battery box 110. At this time, the first surfaces of the M cells are all parallel to the end surface of the first beam 111 near the cells.

Through putting into battery box 110 with M battery one by one, when every battery was put into battery box 110, compress tightly the battery one by one to first roof beam 111 direction with the battery through first pressure of predetermineeing, can guarantee to reserve sufficient space between M piece battery and second roof beam 112, the installation of the nth battery of being convenient for.

It is noted that the first preset pressure and the second preset pressure are used to distinguish different directions of force applied to the battery in the embodiment of the present disclosure. The first predetermined pressure applied to the different cells may be the same or different, and the second predetermined pressure applied to the different cells may be the same or different. And in the embodiments of the present disclosure, the preset positions are different for different batteries, that is, the target positions of the corresponding batteries represented by the preset positions are not the same, and do not mean that the target positions of all the batteries are the same.

It is understood that when M batteries are put into the battery box 110, a plurality of batteries may be put at a time, for example, two batteries are put at a time or three batteries are put at a time, and this is not particularly limited in the embodiments of the present disclosure. Preferably, the number of cells put in each time may be N-M.

The M batteries may be placed in the battery box 110 in multiple batches, and one group of batteries is placed in the battery box 110 in each batch until the batteries in multiple batches are placed in the battery box 100. After a group of batteries is placed in the battery box 110, a first preset pressure is applied to one surface of the group of batteries, which is far away from the first beam 111, so that the group of batteries is in a preset position, then a second preset pressure is applied to the top surface of the group of batteries, and the first pressure is removed, so that the group of batteries is kept in the preset position.

It should be noted that there are at least two batteries in a battery pack, and the number of batteries in different batches of battery packs may be the same or different.

For example, a push rod can be arranged on a battery boxing tool at a battery assembling station, the push rod can be arranged on the tool main body in a sliding mode, the push rod is connected with a driving device, and the driving device drives the push rod to provide first preset pressure for the battery.

The first surface of the battery and the end surface of the first beam 111 close to the battery in the embodiment of the present disclosure are parallel to each other, which means that the first surface of the battery and the end surface of the first beam 111 close to the battery are parallel to each other within a process tolerance. That is, when the acute angle formed by the first surface of the battery and the end surface of the first beam 111 close to the battery is smaller than the predetermined angle, the first surface of the battery and the end surface of the first beam 111 close to the battery are considered to be parallel. For example, the preset angle may be 0.5 degrees, 1 degree, 2 degrees, 3 degrees, or the like.

In step S120, a first preset pressure may be applied to a surface of the M-cell, which is far from the first beam 111, of the cells far from the first beam 111, so that the M-cell is in a preset position.

When the batteries are installed in the battery box 110, the front M batteries are small in assembly difficulty, and the rest N-M batteries are small in assembly space and large in installation difficulty. Applying a first preset pressure to the surface of the cell far from the first beam 111, among the M cells, far from the first beam 111 can push the M cells to move towards the direction close to the first beam 111, so that the space between the mth cell and the second beam 112 can be increased, and the remaining N-M cells can be conveniently installed.

In a possible embodiment of the present disclosure, the M batteries are integrally loaded in the battery box 110, and in this case, a first preset pressure may be applied to the M batteries integrally, which are away from the first beam 111, among the M batteries, and the M batteries are integrally compressed by the surface of the M batteries away from the first beam 111.

In another possible embodiment of the present disclosure, M batteries are individually loaded into the battery box 110, and at this time, the first M-1 batteries are already compressed by a first preset pressure when being loaded into the battery box 110 and are positioned by a corresponding second preset pressure. Only the mth cell needs to be applied with the first preset pressure in step S120.

The battery is a cuboid battery, the battery comprises two opposite first surfaces and four second surfaces surrounding the first surfaces, the area of the first surfaces is larger than that of the second surfaces, and the first surfaces of the battery are perpendicular to the arrangement direction of the batteries. Applying a first preset pressure to the faces of the cells far from the first beam 111, among the M cells, far from the first beam 111, so that the cells far from the first beam 111 among the M cells are in the preset position may be achieved by: a first preset pressure is applied to a first surface, away from the first beam 111, of the cells, away from the first beam 111, of the M cells, so that the cells, away from the first beam 111, of the M cells are in a preset position.

In step S130, a second preset pressure may be applied to at least the top surfaces of the cells far from the first beam among the M cells, and the first preset pressure may be removed to maintain the M cells at preset positions.

Wherein, a first preset pressure is applied to the surface, far away from the first beam 111, of the cells far away from the first beam 111, and the M cells are in a compressed state. When the first preset pressure is removed, the M batteries move toward the second beam 112, thereby causing the installation space of the remaining N-M batteries to be reduced. By applying a second preset pressure to the top surface of the cells away from the first beam 111, at least among the M cells, the M cells can be restrained.

The second preset pressure may be applied to at least the top surface of the cell, which is far from the first beam, among the M cells, meaning that the second preset pressure may be applied by applying the second preset pressure to the top surface of the mth cell from near the first beam, or may be applied to the top surface of a plurality of cells including the mth cell from near the first beam.

In a possible embodiment of the present disclosure, the M batteries are integrally placed in the battery box 110, and at this time, a second preset pressure may be applied to the top surface of the mth battery, and the M batteries are limited at preset positions by the second preset pressure.

In another possible embodiment of the present disclosure, M batteries may be individually loaded into the battery box 110, and the first M-1 batteries are already compressed by a first preset pressure when being loaded into the battery box 110 and are positioned by a corresponding second preset pressure. Only the second preset pressure needs to be applied to the mth cell and the first pressure is removed in step S130.

In step S140, the remaining N-M batteries of the N batteries may be placed between the second beam and the battery far from the first beam among the M batteries, and the second preset pressure may be removed.

Wherein the remaining N-M batteries are loaded into the battery box 110, and the first surfaces of the remaining N-M batteries are respectively opposite to the first surface of the mth battery and the second beam 112. After the remaining N-M batteries are loaded into the battery box 110, the second predetermined pressure is removed, the M batteries are released and move in a direction close to the second beam 112, and the remaining N-M batteries are clamped.

When the M batteries are integrally placed in the battery case 110, a second predetermined pressure is applied to the top surface of the mth battery. At this time, the removing of the second preset pressure includes: the second predetermined pressure applied to the top surface of the mth cell is removed.

When the M batteries are placed into the battery box 110 one by one, the top surfaces of the M batteries are all applied with a second preset pressure. At this time, the removing of the second preset pressure includes: the preset pressure applied to the top surface of each of the M cells is removed.

In the embodiment of the disclosure, the battery boxing tool can comprise a pressing rod, the pressing rod is connected to the tool main body and used for applying a second preset pressure to the top surface of the battery, and the pressing rod can be connected with the driving device. For example, the plunger is connected to a motor, or the plunger is connected to a hydraulic device. When the M batteries are integrally loaded into the battery box 110, the battery box loading tool may include a pressing rod for applying a second preset pressure to the mth battery. When the M batteries are placed into the battery box 110 one by one, the battery box entering tool may include M press rods, and each press rod correspondingly applies a second preset pressure to one battery.

When M < N-1, before step S140, the method for assembling a battery according to the embodiment of the present disclosure further includes: and connecting the rest N-M batteries in the N batteries. Namely, the rest N-M batteries in the N batteries are put into the battery box as a whole.

The remaining N-M batteries of the N batteries are connected by connecting glue to adjacent batteries, or by bundling the N-M batteries into a whole by a band or the like.

Further, in order to ensure the stability of the connection of the battery in the battery box 110, as shown in fig. 4, the method for assembling the battery provided by the embodiment of the present disclosure may further include:

step S150, bonding the battery to the bottom of the battery case.

The bottom plate of the battery case 110 and the bottom surface of the battery may be filled with a glue, so that the battery may be adhered to the bottom of the battery case 110. The battery is bonded on the bottom plate, so that the connection stability of the battery can be improved, the situation that the position of the battery is moved due to vibration and other reasons in the use process is avoided, and the service life of the battery is prolonged.

In a possible embodiment of the present disclosure, the battery can be adhered to the bottom of the battery box by: before M batteries in the N batteries are placed in the accommodating space, glue is applied to the bottom surfaces of the batteries to form a connecting glue layer on the bottom surfaces of the batteries. And before the rest N-M batteries are put into the box, gluing the bottom surfaces of the rest N-M batteries to form a connecting glue layer on the bottom surfaces of the rest N-M batteries.

When the M batteries are integrally placed in the battery box 110, glue may be applied to the bottom surface of the battery array formed by the M batteries, and the connection glue forms a connection glue layer on the bottom surface of the battery array. After the battery array is placed in the battery box 110, the connection glue layer connects the bottom plate and the bottom surface of the battery array. When M batteries are put into the battery box 110 one by one, the bottom surface of each battery is coated with glue before each battery is put into the box to form a connection glue layer on the bottom surface of each battery. Notably, the mounting of the battery needs to be completed before the connection paste is cured.

The bottom surface of the battery is coated with glue when the battery is placed into the box, and the battery box 110 are connected by using the connecting glue layer on the bottom surface of the battery, so that the problem that the connecting glue is possibly cured in advance due to the fact that a certain time is needed for placing all the batteries into the box when the battery box 110 is coated with glue in advance can be solved.

In another possible embodiment of the present disclosure, glue injection holes may be reserved on the beams of the battery box or between adjacent batteries, the glue injection holes extend from the bottom of the battery box to the top surface or the side surface of the batteries, and when the batteries are installed in the battery box 110, glue is injected between the batteries and the bottom plate through the glue injection holes, so that the bonding between the bottom plate and the batteries is realized.

Glue is injected between the batteries and the battery box 110 through the glue injection holes, a connection glue layer is formed between the batteries and the bottom plate, and the problem that the connection glue is possibly cured in advance due to the fact that a certain time is needed for all the batteries to enter the box in the process of gluing the battery box 110 in advance can be solved.

Further, in the embodiment of the present disclosure, the battery may swell during a plurality of charging cycles, and in order to provide a buffer space for buffering the swelling of the battery, as shown in fig. 5, the method for assembling the battery according to the embodiment of the present disclosure may further include:

step S160, forming a buffer pad between the facing surfaces of two adjacent batteries of the N batteries.

The buffer pad may be made of a flexible insulating material, for example, the material of the buffer pad may be plastic or rubber. The cushion pad can be compressed during the battery assembly process so that the battery array formed of M batteries can be compressed when the batteries are assembled to the battery case 110, facilitating the installation of the remaining N-M batteries. And the battery can expand after a plurality of charging cycles, and the buffer pad can provide buffer space for the expansion of the battery. The two sides of the buffer pad can be connected with the battery through the connecting glue.

In a possible embodiment of the present disclosure, disposing the buffer pad between the first surfaces of the two adjacent batteries of the N batteries may be implemented as follows: a buffer pad is attached to one first surface of each of the N-1 cells. That is, a cushion pad may be attached to one first surface of each battery before the batteries are loaded into the battery box 110, and the first surface of the cushion pad may be directed toward the second beam 112 when the batteries are loaded into the box. No buffer pad is arranged on the Nth battery.

In another possible embodiment of the present disclosure, disposing the buffer pad between the first surfaces of the N batteries facing each other may be implemented as follows: after one or more batteries are placed in each accommodating space, a cushion pad is placed on the side of the battery away from the first beam 111. That is, the batteries and the buffer pads are alternately placed in the battery case 110 such that any adjacent two batteries have the buffer pads therebetween. Or a cushion may be provided between every few cells.

According to the assembling method of the battery, the M batteries in the N batteries are placed in the accommodating space, the first preset pressure is applied to the surface, far away from the first beam, of the battery far away from the first beam in the M batteries, the battery far away from the first beam in the M batteries is located at the preset position, the second preset pressure is applied to the top surface, far away from the first beam, of the battery in the M batteries at least, the M batteries are positioned, the remaining N-M batteries are convenient to place in the battery box, the N batteries are directly installed in the battery box, and convenience in assembling is improved.

An exemplary embodiment of the present disclosure also provides a battery pack including: the battery box 110 comprises a first beam 111 and a second beam 112 which are oppositely arranged, and an accommodating space is formed between the first beam 111 and the second beam 112; the above-described method of assembling N batteries to the battery box 110.

The battery box 110 includes a bottom plate and a plurality of beams connected to the bottom plate, at least one accommodating space is formed on the bottom plate, and a plurality of batteries are installed in each accommodating space.

The base plate may be a flat plate structure or an approximately flat plate structure, for example, the base plate may be a stainless steel plate or an aluminum alloy plate. The bottom plate is provided with an accommodating area which is used for placing a battery or a battery pack. The orthographic projection of the battery or the battery pack on the bottom plate is located in the accommodating area, the battery or the battery pack may be directly placed in the accommodating area, or other devices, such as a cooling device, may also be arranged between the battery or the battery pack and the bottom plate, which is not specifically limited in this embodiment of the disclosure.

The beams are arranged on one side of the bottom plate with the containing area, the beams are criss-cross, and a plurality of containing spaces are formed in the containing area. For example, the plurality of criss-cross beams can separate the accommodating areas to form four accommodating spaces, and a plurality of batteries are arranged in each accommodating space. Of course, in practical applications, the number of the accommodating spaces formed by the bottom plate and the beam may also be other numbers, for example, one, two, or six, and the like, and the embodiment of the disclosure is not limited thereto.

It should be noted that, in the embodiment of the present disclosure, only one accommodating space is described for installing a battery, and the method for installing batteries in the remaining accommodating spaces is consistent therewith. The first beam 111 and the second beam 112 in the embodiment of the present disclosure refer to beams of the cell case 110 at both ends in the cell arrangement direction, respectively.

The battery 120 in the embodiment of the present disclosure may be a rectangular parallelepiped battery, and the battery 120 includes two opposite first surfaces and four second surfaces surrounding the first surfaces, and the area of the first surfaces is larger than that of the second surfaces.

The two opposing first surfaces are the large surfaces of the cell and the four second surfaces are the small surfaces of the cell 110, the four second surfaces include two pairs of small surfaces, a first pair of small surfaces extending along the length of the cell and a second pair of small surfaces extending along the width of the cell, and the first pair of small surfaces has an area greater than the second pair of small surfaces but less than the area of the large surfaces.

The battery 120 may include a battery body and a post assembly, which may be disposed on a first surface of the battery body or on a second surface of the battery body. Including casing and electric core in the battery body, inside the casing was located to the electric core, the casing was used for protecting electric core to the casing can also be used for sealed electrolyte.

When the post assembly is arranged on the first surface of the battery body, a concave part can be arranged on the first surface of the battery body, and the post assembly is arranged on the concave part. The pole component is arranged in the concave part of the first surface of the battery body, and the energy density of the battery pack can be increased.

Or the pole assembly can be arranged on the top surface of the battery body, and the top surface of the battery body can be provided with a first pole assembly (a positive pole assembly) and a second pole assembly (a negative pole assembly). The first pole column assembly and the second pole column assembly can be arranged at two ends of the top surface of the battery body respectively. When the battery is assembled, the pressing rod can apply second preset pressure to the position between the first pole post assembly and the second pole post assembly.

In the embodiment of the present disclosure, the top surface of the battery refers to a surface of the battery away from the bottom surface of the battery box when the battery is placed in the battery box, and the bottom surface of the battery refers to a surface of the battery close to the bottom surface of the battery box when the battery is placed in the battery box.

According to the battery pack provided by the embodiment of the disclosure, the batteries are assembled through the assembling method of the batteries, in the assembling method of the batteries, the M batteries in the N batteries are placed in the accommodating space, the first preset pressure is applied to the surface, far away from the first beam, of the battery far away from the first beam in the M batteries, the battery far away from the first beam in the M batteries is located at the preset position, the second preset pressure is applied to at least the top surface, far away from the first beam, of the battery in the M batteries, the positioning of the M batteries is realized, the remaining N-M batteries are convenient to place in the battery box, the N batteries are directly arranged in the battery box, and the assembling convenience is improved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.