CN216389557U

CN216389557U - Battery case, battery pack and mobile power supply

Info

Publication number: CN216389557U
Application number: CN202122237070.7U
Authority: CN
Inventors: 王雷; 黄堪祝
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-26
Anticipated expiration: 2031-09-15

Abstract

The application provides a battery shell, a battery pack and a mobile power supply; the battery case, including the casing that is used for holding electric core, a plurality of recesses are seted up to the inner wall of casing, and the louvre has been seted up to the bottom of recess, and the casing has relative first end and second end, and the first end of casing is uncovered form, and the recess extends the setting towards first end to be the opening form in the edge of first end, the recess distributes along the direction of first end to second end, and holds from first end to second, and the degree of depth of recess becomes shallow gradually. According to the battery case provided by the application, the design of the groove can enable burrs or burrs around the heat dissipation holes to be hidden in the groove, so that the burrs or burrs are prevented from scratching the battery cell; the depth of the groove becomes shallow gradually along the direction from the first end to the second end of the shell, so that the battery shell can be smoothly molded and demoulded in the production and manufacturing process, and burrs or burrs can be prevented from being formed in the groove.

Description

Battery case, battery pack and mobile power supply

Technical Field

The application belongs to the technical field of batteries, and more particularly relates to a battery shell, a battery pack and a mobile power supply.

Background

In current battery package, for the heat dissipation purpose, often will set up the louvre on the battery case. However, in the injection molding process of the housing, burrs or burrs are easily formed on the edges of the heat dissipation holes. When the battery cell is placed in the battery case, the battery cell is easily scratched by burrs or burrs around the heat dissipation holes on the battery case, so that potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a battery case, a battery pack and a mobile power supply, so as to solve the technical problem that a battery cell in the prior art is easily scratched by burrs or burrs on the periphery of a heat dissipation hole of the battery case.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a battery case including: a casing for holding electric core, a plurality of recesses are seted up to the inner wall of casing, and the louvre has been seted up to the bottom of recess, and the casing has relative first end and second end, and the first end of casing is uncovered form, and the recess extends the setting towards first end to be the opening form in the edge of first end, the recess distributes along the direction of first end to second end, and holds from first end to second, and the degree of depth of recess becomes shallow gradually.

In one embodiment, the width of the groove tapers from the first end to the second end.

In one embodiment, the width of the groove tapers from the opening of the groove to the bottom of the groove.

In one embodiment, the two opposite side walls of the groove are formed with arc-shaped walls at positions close to the first end, and the two arc-shaped walls are arranged in a bending way towards the direction away from each other.

In one embodiment, the groove side wall is formed with an arcuate surface at a location toward the second end.

In one embodiment, the inner wall surface of the housing is chamfered or radiused at an edge of the first end.

In one embodiment, the outer wall of the shell is provided with a honeycomb reinforcing structure, the honeycomb reinforcing structure is provided with honeycomb holes, and the heat dissipation holes are located in an area enclosed by hole walls of the honeycomb holes.

In one embodiment, the housing includes a first housing and a second housing, the first housing and the second housing being fixedly connected with a bolt.

Another object of the present application is: the battery pack comprises the battery shell of any one of the embodiments, the battery core group is arranged in the shell, and the BMS board is arranged on the outer wall of the shell and is electrically connected with the battery core group.

Another object of the present application is: the utility model provides a portable power source, includes shell and contravariant board, portable power source's the battery package of any above-mentioned embodiment, battery package and contravariant board all set up in the shell, and the BMS board electric connection of contravariant board and battery package.

The application provides a battery case's beneficial effect lies in: compared with the prior art, the battery case of this application has seted up the recess on the casing internal face, and the bottom of recess is located to the louvre, can be so that the peripheral burr of louvre or drape over one's shoulders the cutting edge of a knife or a sword and be in among the recess in the manufacturing process, prevent the peripheral burr of louvre or drape over one's hair and bulge the internal face of casing to when avoiding installing electric core, by the peripheral burr of louvre or drape over one's hair scratch electric core outer wall, promote the security performance of battery case. And become shallow gradually the groove depth of recess along the direction of the first end to the second end of casing, in the manufacturing process, can hold the mould drawing of patterns to the direction of first end along the second with the mould of shaping recess, the drawing of patterns of being convenient for, and then make things convenient for the processing preparation of casing, and when the drawing of patterns, the edge of recess can be scraped to the mould, avoid the recess edge to produce the burr or the flash of a knife or a sword of protrusion casing internal face, and then when installing electric core, can avoid the burr or the flash of a knife or a sword scratch electric core outer wall at recess edge.

The application provides a battery package's beneficial effect lies in: compared with the prior art, the battery pack of this application has used above-mentioned battery case, when installation electric core, can avoid burr or drape over one's shoulders cutting edge of a knife or a sword scratch electric core outer wall, has promoted the holistic security performance of battery pack, also makes the casing of battery pack change shaping and drawing of patterns in manufacturing, has improved the efficiency of production and processing, has also strengthened the durability of casing simultaneously.

The application provides a portable power source's beneficial effect lies in: compared with the prior art, the mobile power supply of this application has used above-mentioned battery package, has promoted mobile power supply's security performance and durability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

fig. 2 is a second structural schematic diagram of the first embodiment of the battery case provided in the embodiment of the present application;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a partial enlarged view of the area B in FIG. 2;

FIG. 5 is a schematic structural view of a second embodiment of a battery case according to the embodiment of the present application;

FIG. 6 is an enlarged view of a portion of the area C in FIG. 5;

FIG. 7 is an enlarged view of a portion of the area D in FIG. 6;

fig. 8 is an exploded schematic view of a third embodiment of a battery case according to an embodiment of the present application;

wherein, in the drawings, the reference numerals are mainly as follows:

100-battery can 10-case 101-first end

102-second end 103-chamfer 104-honeycomb reinforcement structure

105-honeycomb cells 11-grooves 111-apical ends

112-bottom side 113-arc wall 12-heat dissipation hole

13-first housing 131-first opening 132-through hole

14-second casing 141-second opening 142-threaded column

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "center," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of 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, "a plurality" means two or more unless specifically limited otherwise.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

For the reader's understanding, the following explains the occurrence of terms in the embodiments of the present application:

arc-shaped wall: two opposite side wall surfaces of the groove are positioned at the first end of the shell and are designed into arc surfaces along the directions departing from each other.

BMS board: a BMS (Battery Management System) is a System for managing a Battery, and generally has a function of measuring a Battery voltage to prevent or avoid abnormal situations such as overdischarge, overcharge, and overheat of the Battery. The BMS board is a circuit board on which the battery management system functions are mounted.

An inverter board: a circuit board with an inversion function is used for converting a direct current power supply into an alternating current power supply.

From this, this application embodiment provides a battery case, battery package and portable power source, can avoid electric core easily by the peripheral burr of louvre on the battery case or flash over one's shoulders the problem of cutting over one's shoulders the outer wall and take place, promotes the security that battery electricity core used.

Referring to fig. 1 and fig. 2 together, a battery case 100 according to an embodiment of the present application will now be described. The battery case 100 includes a casing 10, and a battery cell (not shown) is disposed in the casing 10, and when the battery cell is disposed in the casing 10, the casing 10 can protect the battery cell. The casing 10 has two opposite ends, namely a first end 101 and a second end 102, of the casing 10, wherein the first end 101 is provided in an open shape, so that a battery cell can be placed into the casing 10 from the open position, and the battery cell can be mounted conveniently. It is also possible to provide the second end 102 with an open shape for heat dissipation.

The casing 10 is provided with heat dissipation holes 12, and the heat dissipation holes 12 penetrate through the wall surface of the casing 10, so as to facilitate timely evacuation of heat generated by the battery cells in the casing 10. The casing 10 has a certain thickness, and a plurality of recesses 11 have been seted up on the internal wall of casing 10, and louvre 12 is located the bottom of recess 11, and the bottom of recess 11 is the recess 11 and deviates from one side of casing 10 internal wall along the thickness direction of casing 10. Because burrs or burrs are often generated on the edge of the hole structure during injection molding of the hole structure, i.e., burrs or burrs are generated around the heat dissipation hole 12 during the manufacturing process. The heat dissipation hole 12 is disposed at the bottom of the groove 11, so that the burr or the burr around the heat dissipation hole 12 is located in the groove 11, and the burr or the burr is prevented from protruding out of the inner wall surface of the casing 10.

The groove 11 is arranged to extend towards the first end 101 of the housing 10 and is open at the edge of the first end 101 of the housing 10, i.e. the groove 11 extends in a direction towards the first end 101 of the housing 10 and extends to the edge of the first end 101.

For convenience of description, an end of the groove 11 close to the first end 101 of the housing 10 is defined as a top side end 111, an end of the groove 11 close to the second end 102 of the housing 10 is defined as a bottom side end 112, that is, the top side end 111 and the bottom side end 112 are opposite ends of the groove 11 in the length direction, and the bottom side end 112 of the groove 11 is also an end of the groove 11 away from the first end 101 of the housing 10. It should be noted that the "top" and "bottom" are merely defined for convenience of description, and do not limit the direction of the present embodiment.

The top end 111 to the bottom end 112 of the groove 11 are distributed along the direction from the first end 101 to the second end 102 of the housing 10, and are provided on the inner wall surface of the housing 10. The top side end 111 of the recess 11 extends to the end surface of the first end 101 of the housing 10 such that the top side end 111 of the recess 11 is open. The depth direction of the groove 11 is the thickness direction of the housing 10, and the depth of the groove 11 is smaller than the thickness of the housing 10. The depth of the groove 11 becomes gradually shallower along the direction from the first end 101 to the second end 102 of the housing 10, that is, the depth of the groove 11 becomes gradually shallower from the top side end 111 to the bottom side end 112. I.e. the groove depth is deepest at the top side end 111 of the groove 11 and shallowest at the bottom side end 112 of the groove 11. By the arrangement mode, when the shell is machined and manufactured, the mold for forming the groove 11 is demolded along the direction from the second end 102 to the first end 101, so that the mold for forming the groove 11 is demolded conveniently, the shell 10 is machined and manufactured conveniently, the edge of the groove 11 can be scraped by the mold when the mold is demolded, and burrs or burrs protruding out of the inner wall surface of the shell 10 are prevented from being generated at the edge of the groove 11.

Through seting up recess 11 on casing 10 internal face, set up louvre 12 in the bottom of recess 11 for defects such as burr or the flash that louvre 12 produced in the manufacturing process can be injectd in recess 11, prevent that the peripheral burr of louvre 12 or flash from protruding the internal face of casing 10, when avoiding installing electric core, by the peripheral burr of louvre 12 or flash scratch electric core outer wall, promote the security performance of battery case 100. The top end 111 of the groove 11 is open, and the depth of the groove 11 gradually becomes shallower along the direction from the top end 111 to the bottom end 112, so that the groove 11 can be conveniently formed and demolded in the production and manufacturing process, for example, the demolding can be performed along the direction from the second end 102 to the first end 101, and the difficulty in the processing process of the battery case 100 is reduced. And when the drawing of patterns, the edge of recess 11 can be scraped to the mould, avoids recess 11 edge to produce the burr or the flash of a knife or a sword of protrusion casing 10 internal face, and then when the installation electric core, can avoid the burr or the flash of a knife or a sword scratch electric core outer wall at recess 11 edge.

In one embodiment, referring to fig. 1 and fig. 2, the width direction of the groove 11 is perpendicular to the thickness direction of the housing 10, and the width direction of the groove 11 is also perpendicular to the direction from the first end 101 to the second end 102. In the direction from the second end 102 to the first end 101 of the housing 10: the width of the groove 11 gradually widens, i.e. the width of the groove 11 gradually narrows in the direction from the first end 101 to the second end 102 of the housing 10. The shape of the recess 11 is now approximately trapezoidal, with the top end 111 of the recess 11 having the widest groove width and the bottom end 112 of the recess 11 having the narrowest groove width. The arrangement also can realize the effect that the groove 11 is convenient for forming and smooth demoulding.

In one embodiment, the groove 11 has a groove width that gradually narrows from the opening of the groove 11 to the bottom of the groove 11. The opening of the groove 11 refers to an opening of the groove 11 formed on the inner wall surface of the housing 10. That is, the groove width of the groove 11 gradually becomes wider from the bottom of the groove 11 to the inner wall surface of the housing 10, the groove width of the groove 11 near the inner wall surface of the housing 10 becomes the largest, and the groove width of the bottom of the groove 11 becomes the smallest, which simplifies the structure of the groove 11 and also makes the groove 11 easier to be demolded during production and manufacturing.

In one embodiment, referring to fig. 5 and 6, the two opposite sidewalls of the groove 11 are formed with arc-shaped walls 113 at positions close to the first end 101 of the housing 10, and the arc-shaped walls 113 are smoothly connected to the first end 101 of the housing 10, that is, the two opposite sidewalls of the groove 11 are provided with arc-shaped walls 113 at positions close to the top end 111, and the arc-shaped walls 113 are smoothly connected to the first end 101 of the housing 10 in an arc shape. The curved walls 113 are arranged in an arc, and the curved walls 113 are arranged curved away from each other, that is to say, near the top side end 111: the distance between the two arc-shaped walls 113 gradually increases and the groove width of the tip side end 111 largely widens outward, which configuration makes the tip side end 111 of the groove 11 open more, facilitating demolding of the groove 11 during production. In some embodiments, the arcuate walls 113 of the top side end 111 of the groove 11 are rounded to facilitate design and fabrication. It will be appreciated that the curved wall 113 of the top end 111 of the recess 11 may also be provided in other irregular arcs.

In one embodiment, referring to fig. 1 and 2, a plurality of grooves 11 are formed on an inner wall surface of the housing 10, and the plurality of grooves 11 are arranged side by side and at intervals, so that more heat dissipation holes 12 can be formed on the housing 10 to facilitate heat dissipation.

In one embodiment, a groove 11 may be provided on an inner wall surface of one side of the housing 10 according to the arrangement of the heat dissipation holes 12. Of course, the grooves 11 may be provided on the inner wall surfaces of two, three, or four sides of the housing 10.

In one embodiment, the length of each groove 11 in the direction from the first end 101 to the second end 102 may be set the same for design convenience. Of course, the lengths of the grooves 11 along the direction from the first end 101 to the second end 102 may be different.

In one embodiment, a heat dissipation hole 12 may be formed at the bottom of one groove 11. Of course, a plurality of heat dissipation holes 12 may be disposed at the bottom of one groove 11, and the plurality of heat dissipation holes 12 are disposed at intervals along the length direction of the groove 11.

In one embodiment, when one heat dissipation hole 12 is provided at the bottom of one groove 11, the heat dissipation hole 12 may be provided to be large in order to dissipate heat. When a plurality of heat dissipation holes 12 are provided at the bottom of one groove 11, the total area of the heat dissipation holes 12 can be increased to dissipate heat, and good structural strength of the case 10 can be ensured.

In one embodiment, the shape of the heat dissipation holes 12 may be circular, square, or elongated. The area of the circular heat dissipation holes 12 is small, more heat dissipation holes 12 can be arranged in the groove 11, the area of each heat dissipation hole 12 can be larger due to the long-strip-shaped heat dissipation holes 12, and in one groove 11, under the condition that the same heat dissipation effect is guaranteed, the number of the long-strip-shaped heat dissipation holes 12 relative to the circular heat dissipation holes 12 is smaller, the manufacturing process of the shell 10 is simplified, and the manufacturing difficulty of the shell 10 is reduced. The number of the grooves 11, the height of the grooves 11, the number of the heat dissipation holes 12, and the shape of the heat dissipation holes 12 may be set according to actual requirements, and are not limited herein.

In one embodiment, the inner side surface of the side of the groove 11 close to the second end 102 of the housing 10 is an arc surface, that is, the inner side surface of the bottom side end 112 of the groove 11 is an arc surface, so as to reduce the edge angle, and further reduce the probability of generating burrs and burrs at the bottom side end 112 of the groove 11. In some embodiments, the inner side surface of the bottom side end 112 of the groove 11 is a flat surface.

In one embodiment, referring to fig. 2 and 3, a chamfer 103 is formed on an inner wall surface of the housing 10 at an edge of the first end 101, that is, the inner side edge of an end surface of the first end 101 of the housing 10 is provided with the chamfer 103. Set up chamfer 103 at the internal wall face edge of casing 10's first end 101, not only the recess 11 drawing of patterns of being convenient for has also reduced the convex edges and corners at casing 10 internal wall face edge to a certain extent to the collision of electric core, has promoted electric core assembly process's security. In some embodiments, a fillet may also be provided at the edge of the inner wall surface of the housing 10 at the first end 101.

In one embodiment, referring to fig. 1 and 2, the outer wall of the casing 10 is provided with a honeycomb reinforcing structure 104, and the honeycomb reinforcing structure 104 can enhance the structural strength of the casing 10 and the toughness of the casing 10. The honeycomb reinforcing structure 104 has honeycomb holes 105, and the honeycomb holes 105 are closed regions surrounded by hole walls. On the outer wall of the casing 10, the heat dissipation holes 12 are located in the honeycomb holes 105 to prevent the honeycomb reinforcing structure 104 from shielding the heat dissipation holes 12, so as to facilitate heat dissipation.

In one embodiment, referring to fig. 1, the housing 10 may have an open end, or both ends. When the housing 10 is of an open-ended structure, i.e., the first end 101 of the housing 10 is of an open-ended structure, the bottom end 112 of the groove 11 is located inside the housing 10, and the top end 111 of the groove 11 extends to the end surface of the first end 101 of the housing 10. When both ends of the housing 10 are open structures, that is, the first end 101 of the housing 10 and the second end 102 of the housing 10 are both open structures, the bottom end 112 of the groove 11 may be located inside the housing 10, or may extend to the end surface of the second end 102 of the housing 10, that is, the bottom end 112 of the groove 11 is also open.

In one embodiment, the case 10 includes a first case 13 and a second case 14, the first case 13 and the second case 14 together form the case 10, the structure disperses the pressure and weight born by a single case 10 when accommodating the battery cells, and improves the durability of the case 10, and the combination also increases the accommodating space of the battery case 100, so that more battery cells can be placed in the battery case 100, thereby facilitating large-scale production and manufacturing, and on the other hand, increasing the accommodating space of the battery case 100, facilitating assembly of some components in the battery case 100, and providing convenience for the design of the battery case 100.

When the first housing 13 and the second housing 14 together form the battery case 100, the first housing 13 is sleeved on the second housing 14 along the direction from the first end 101 to the second end 102, so as to facilitate the positioning and assembling of the first housing 13 and the second housing 14. The end face of the first end 101 of the first housing 13 is provided with a first opening 131, and correspondingly, the end face of the second end 102 of the second housing 14 is correspondingly provided with a second opening 141, so that bolts can be used to pass through the first opening 131 and the second opening 141 to fixedly connect the first housing 13 and the second housing 14. In some embodiments, the first housing 13 and the second housing 14 are of the same construction.

In one embodiment, referring to fig. 4, 7 and 8, at least one of the first opening 131 and the second opening 141 is a threaded hole, so that the first housing 13 and the second housing 14 can be directly connected by using a bolt to be installed in the threaded hole.

In the above embodiment, the side of the first end 101 of the first casing 13 is provided with the through hole 132, the side of the second end 102 of the second casing 14 is provided with the threaded post 142 corresponding to the through hole 132, and the through hole 132 can be screwed into the threaded post 142 to fixedly connect the side of the first end 101 of the first casing 13 with the side of the second end 102 of the second casing 14, so that the connection is firmer.

The embodiment of the present application also provides a battery pack including a battery cell pack (not shown), a BMS plate (not shown), and the battery case 100 of any of the above embodiments. The electric core group includes a plurality of electric cores, and the electric core group sets up in casing 10, and the BMS board sets up on casing 10's outer wall for be connected with electric core group electricity. By adopting the battery case 100, when the battery core group is installed, burrs or burrs can be prevented from scratching the outer wall of the battery core, the overall safety performance of the battery pack is improved, the forming and demolding of the shell 10 of the battery pack in the production and manufacturing process can be facilitated, and the process difficulty is reduced.

In one embodiment, the battery case 100 in the battery pack comprises two cases 10, and the two cases 10 are fixedly connected together to form the battery case 100, so that the safety performance and the durability of the battery pack are enhanced, and the use scene of the battery pack is enriched.

The embodiment of the application still provides a portable power source, and this portable power source includes shell (not marked in the figure), contravariant board (not marked in the figure) to and the battery package of above-mentioned embodiment, contravariant board and battery package all set up in the shell, and the contravariant board is connected with the BMS board electricity in the battery package. By adopting the battery pack, the safety performance and the durability of the mobile power supply are enhanced, and the use scene of the mobile power supply is enriched.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery case, characterized in that: including the casing that is used for holding electric core, a plurality of recesses are seted up to the inner wall of casing, the louvre has been seted up to the bottom of recess, the casing has relative first end and second end, the first end of casing is uncovered form, the recess orientation first end extends the setting, and in the edge of first end is the opening form, the recess is followed first end extremely the direction of second end distributes, and certainly first end extremely the second end, the degree of depth of recess becomes shallow gradually.

2. The battery case of claim 1, wherein the groove tapers in width from the first end to the second end.

3. The battery case of claim 1, wherein the groove has a width that gradually narrows from an opening of the groove to a bottom of the groove.

4. The battery case of claim 1, wherein: the positions, close to the first end, of the two opposite side walls of the groove are both provided with arc-shaped walls, and the two arc-shaped walls are arranged in a bending mode towards directions deviating from each other.

5. The battery case according to any one of claims 1 to 4, wherein: an arc-shaped surface is formed on the side wall of the groove at a position facing the second end.

6. The battery case according to any one of claims 1 to 4, wherein: a chamfer or fillet is formed on the inner wall surface of the shell at the edge of the first end.

7. The battery case according to any one of claims 1 to 4, wherein: the outer wall of the shell is provided with a honeycomb reinforcing structure, the honeycomb reinforcing structure is provided with honeycomb holes, and the heat dissipation holes are located in an area surrounded by hole walls of the honeycomb holes.

8. The battery case according to any one of claims 1 to 4, wherein: the shell comprises a first shell and a second shell, and the first shell and the second shell are fixedly connected through bolts.

9. The utility model provides a battery pack, includes electric core group and BMS board, its characterized in that: the battery pack further comprises the battery case according to any one of claims 1 to 8, the battery cell pack is disposed in the case, and the BMS board is disposed on the outer wall of the case and electrically connected to the battery cell pack.

10. The utility model provides a mobile power supply, includes shell and contravariant board, its characterized in that: the mobile power supply further comprises the battery pack of claim 9, the battery pack and the inverter board are both disposed within the housing, and the inverter board is electrically connected to the BMS board of the battery pack.