Battery pack and energy storage power supply

Abstract

A battery pack (100) and an energy storage power supply are disclosed. The battery pack (100) comprises a casing (10) and a battery module (20). The casing (10) comprises a first case (11) and a second case (12). The first case (11) is detachably connected to the second case (12). The first case (11) comprises a first inner wall (1111) opposite to the second case (12) and is provided with a first positioning portion (1112) on the first inner wall (1111). The second case (12) comprises a second inner wall (1212) opposite to the first case (11) and is provided with a second positioning portion (1213) on the second inner wall (1212). Two ends of the battery module (20) are respectively inserted into the first positioning portion (1112) and the second positioning portion (1213).

Description

Battery pack and energy storage power supply

[0001] Priority information

[0002] The present application claims priority to and the benefit of patent application numbers 202410895892.X and 202421581438.9 filed with the China National Intellectual Property Office on July 4, 2024, and incorporates by reference the entire disclosure thereof. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage devices, and more particularly to a battery pack and an energy storage power supply. BACKGROUND

[0004] In the related art, two battery supports are generally used to fix the two ends of the battery cell and the corresponding electrical connecting piece and collection plate, and the battery pack is formed and then installed in the shell. This results in a large number of spare parts, a large volume, high cost, and a complex installation procedure of the energy storage power supply. On the other hand, the shell needs to reserve installation space for the battery pack, further increasing the volume of the energy storage power supply. SUMMARY

[0005] The present application provides a battery pack and an energy storage power supply.

[0006] The battery pack of the present application includes:

[0007] a shell, the shell including a first shell and a second shell, the first shell being detachably connected to the second shell, the first shell including a first inner wall opposite to the second shell and being provided with a first positioning portion at the first inner wall, and the second shell including a second inner wall opposite to the first shell and being provided with a second positioning portion at the second inner wall;

[0008] a battery module, both ends of the battery module being respectively inserted into the first positioning portion and the second positioning portion.

[0009] The battery pack provided by the present application replaces the commonly used battery support in the related art by providing the first positioning portion on the first shell and the second positioning portion on the second shell, effectively reducing the internal components of the battery pack, which is conducive to reducing the production cost and assembly difficulty, and at the same time, is conducive to improving the space utilization rate inside the battery pack and facilitating the miniaturization of the battery pack.

[0010] In some embodiments, the first shell includes a bottom shell, the first inner wall includes an inner bottom wall of the shell, the second shell includes a top shell, and the second inner wall includes an inner top wall of the shell.

[0011] In this way, the first shell and the second shell are separately processed and formed, which is conducive to reducing the processing difficulty.

[0012] In some embodiments, the first positioning part comprises a plurality of first positioning slots, and the second positioning part comprises a plurality of second positioning slots corresponding to the first positioning slots respectively.

[0013] In this way, the first positioning slots and the second positioning slots are used to fix the battery module.

[0014] In some embodiments, the first shell comprises a plurality of first connecting columns, the second shell comprises a plurality of second connecting columns, and the first connecting columns are connected with the second connecting columns when the first shell is connected with the second shell.

[0015] In this way, the first connecting columns and the second connecting columns are used to connect the first shell and the second shell, and the first connecting columns are arranged to improve the structural strength of the first shell, and the second connecting columns are arranged to improve the structural strength of the second shell.

[0016] In some embodiments, the battery module comprises a layer of battery cells, and two ends of the battery cells are respectively inserted into the first positioning part and the second positioning part.

[0017] In this way, the battery module with a single layer of battery cells can be fixed by the first positioning part and the second positioning part, and the battery support is completely cancelled, which is conducive to reducing the production cost and assembly difficulty.

[0018] In some embodiments, the battery cell comprises two electrodes respectively located at two ends, and the battery pack further comprises a first electrical connecting member, and the first electrical connecting member is arranged in the first positioning part and the second positioning part respectively to connect the electrodes on the same side of the adjacent plurality of battery cells.

[0019] In this way, the first electrical connecting member is arranged in the first positioning part and the second positioning part respectively, which is conducive to further improving the space utilization rate inside the battery pack.

[0020] In some embodiments, the battery module comprises a first battery module and a second battery module stacked, the first battery module comprises a first support connected with the first shell and a plurality of battery cells, the first support is provided with a third positioning part, and two ends of the battery cells of the first battery module are respectively inserted into the first positioning part and the third positioning part.

[0021] In this way, the first support is used to assist in fixing the first battery module, so as to avoid the instability caused by the lack of supporting point between the first battery module and the second battery module stacked.

[0022] In some embodiments, the second battery module comprises a second support connected with the second shell and a plurality of battery cells, the second support is provided with a fourth positioning part, and two ends of the battery cells of the second battery module are respectively inserted into the second positioning part and the fourth positioning part.

[0023] Thus, the double-layer battery module can fix the first end of each layer of battery cells through the first positioning part and the second positioning part, cancel part of the battery support, and thus reduce the production cost and assembly difficulty.

[0024] In some embodiments, the battery pack further comprises a second electrical connector arranged on the first support and the second support respectively to connect the same side electrodes of the adjacent plurality of battery cells.

[0025] Thus, the second electrical connector is used to connect the electrodes of the battery cells in the first support and the second support in series.

[0026] In some embodiments, the first end of the battery cell is provided with two electrodes.

[0027] Thus, the electrodes of the two layers of battery cells can be arranged at intervals to avoid short circuit caused by miscontacting of the electrodes of the two layers of battery cells.

[0028] In some embodiments, the battery module further comprises a connector for connecting the first battery module and the second battery module.

[0029] Thus, the connector connects and fixes the first battery module and the second battery module, thus facilitating the overall assembly of the battery module and reducing the assembly difficulty of the battery pack.

[0030] The energy storage power supply of another embodiment of the present application comprises the battery pack of any one of the above.

[0031] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter in the description of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of the embodiments of the present application, taken in conjunction with the accompanying drawings, in which:

[0033] FIG. 1 is a cross-sectional view of a battery pack according to an embodiment of the present application;

[0034] FIG. 2 is an exploded view of the battery pack according to an embodiment of the present application;

[0035] FIG. 3 is a structural schematic view of a bottom shell of the battery pack according to an embodiment of the present application;

[0036] FIG. 4 is a structural schematic view of a top shell of the battery pack according to an embodiment of the present application;

[0037] FIG. 5 is a structural schematic view of a battery module of the battery pack according to an embodiment of the present application;

[0038] FIG. 6 is an exploded view of a battery pack according to another embodiment of the present application;

[0039] FIG. 7 is a structural schematic view of a battery cell of a battery module of a battery pack according to another embodiment of the present application;

[0040] FIG. 8 is a structural schematic view of a first battery module of a battery pack according to another embodiment of the present application;

[0041] FIG. 9 is a structural schematic view of a first bracket of a battery pack according to another embodiment of the present application;

[0042] FIG. 10 is a structural schematic view of a second bracket of a battery pack according to another embodiment of the present application.

[0043] Main element symbol explanation: battery pack 100, housing 10, first housing 11, bottom housing 111, first inner wall 1111, inner bottom wall 11111, first positioning portion 1112, first positioning groove 11121, first connecting column 1113, left side cover 112, right side cover 113, front side cover 114, rear side cover 115, second housing 12, top housing 121, handle 1211, second inner wall 1212, inner top wall 12121, second positioning portion 1213, second positioning groove 12131, second connecting column 1214, battery module 20, battery cell 21, electrode 211, connecting member 22, first battery module 23, second battery module 24, first electrical connecting member 30, first bracket 40, third positioning portion 41, second bracket 50, fourth positioning portion 51, second electrical connecting member 60. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described in detail below with reference to the attached drawings, which are presented for the purpose of illustration only and are not intended to limit the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be construed as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0045] In the description of the present application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0047] The disclosure herein provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0048] In the related art, two battery supports are generally used to fix the two ends of the electric core and the corresponding electrical connecting piece and the acquisition plate respectively, form a battery pack, and then install it to the shell. This results in a large number of spare parts of the energy storage power supply, large volume, high cost, and complex installation procedure. On the other hand, since the shell needs to reserve installation space for installing the battery pack, the volume of the energy storage power supply is further increased.

[0049] Referring to FIG. 1, the energy storage power supply in the embodiment of the present application includes an inverter and a battery pack 100, the inverter is electrically connected with the battery pack 100, the battery pack 100 includes a shell 10 and a battery module 20, the shell 10 includes a first shell 11 and a second shell 12, the first shell 11 is detachably connected with the second shell 12, the first shell 11 includes a first inner wall 1111 opposite to the second shell 12 and is provided with a first positioning part 1112 on the first inner wall 1111, the second shell 12 includes a second inner wall 1212 opposite to the first shell 11 and is provided with a second positioning part 1213 on the second inner wall 1212; two ends of the battery module 20 are respectively inserted into the first positioning part 1112 and the second positioning part 1213.

[0050] The battery pack 100 provided in the present application, by setting the first positioning part 1112 on the first shell 11 and the second positioning part 1213 on the second shell 12, so that the first shell 11 and the second shell 12 can replace the battery support commonly used in the related art, effectively reducing the internal parts of the battery pack 100, which is conducive to reducing the production cost and assembly difficulty, at the same time, it is conducive to improving the space utilization rate inside the battery pack 100, and is conducive to the miniaturization of the battery pack 100.

[0051] Specifically, the battery pack 100 is a device that can store electrical energy and release it when needed, its main function is to provide stable and reliable power supply. When the system needs to store electrical energy, the controller will charge the battery pack, and the battery pack will convert electrical energy into chemical energy for storage; when the system needs to use electrical energy, the controller first converts the direct current electrical energy stored in the battery pack into alternating current electrical energy, and then outputs it.

[0052] In the embodiment of the present application, the first shell 11 and the second shell 12 enclose a containing cavity, and the battery module 20 is arranged in the containing cavity.

[0053] Referring to FIG. 2, in some embodiments, the first shell 11 includes a bottom shell 111, the first inner wall 1111 includes an inner bottom wall 11111 of the shell 10, and the second shell 12 includes a top shell 121, and the second inner wall 1212 includes an inner top wall 12121 of the shell 10.

[0054] In this way, the first shell 11 and the second shell 12 are separately processed and formed, which is conducive to reducing the processing difficulty.

[0055] Specifically, in the embodiments of the present application, the first shell 11 includes a bottom shell 111, a left side cover 112, a right side cover 113, a front side cover 114, and a rear side cover 115, the first inner wall 1111 includes an inner bottom wall 11111 of the shell 10, the inner bottom wall 11111 is arranged on the bottom shell 111, the first positioning part 1112 is arranged on the inner bottom wall 11111, the second shell 12 includes a top shell 121, the second inner wall 1212 includes an inner top wall 12121 of the shell 10, the inner top wall 12121 is arranged on the top shell 121, and the second positioning part 1213 is arranged on the inner top wall 12121.

[0056] In other embodiments, the left side cover 112, the right side cover 113, the front side cover 114, and the rear side cover 115 can also be partially or entirely a part of the top shell 121.

[0057] In other embodiments, the first positioning part 1112 is arranged on other positions of the first inner wall 1111 except the inner bottom wall 11111, the inner bottom wall 11111 can also be arranged on other positions of the first shell 11 except the bottom shell 111, the second positioning part 1213 is arranged on other positions of the second inner wall 1212 except the inner top wall 12121, and the inner top wall 12121 can also be arranged on other positions of the second shell 12 except the top shell 121, which can be arranged according to actual needs, and is not limited herein.

[0058] In the embodiments of the present application, the top shell 121, the bottom shell 111, the left side cover 112, the right side cover 113, the front side cover 114, and the rear side cover 115 are integrally formed by one-piece injection molding, and then connected by fasteners or other connection methods.

[0059] In other embodiments, the shell 10 can also be split into any part according to actual needs, and each part can be an integrally formed structure by one-piece processing, or generated by using other processing methods.

[0060] Further, the top shell 121, the bottom shell 111, the left side cover 112, the right side cover 113, the front side cover 114, and the rear side cover 115 enclose a containing cavity, and the battery module 20 is arranged in the containing cavity.

[0061] In some embodiments, one end of the battery module 20 is fixed on the top shell 121, and the other end of the battery module 20 is fixed on the bottom shell 111.

[0062] In other embodiments, both ends of the battery module 20 can also be fixed on the left side cover 112 and the right side cover 113 respectively, or fixed on the front side cover 114 and the rear side cover 115 respectively, which can be selected according to actual needs, and is not specified herein.

[0063] In the embodiment of the present application, two handles 1211 are arranged on the top shell 121, and the handles 1211 are used for moving and carrying the battery pack 100.

[0064] Further, two avoiding grooves are arranged on the top shell 121, and the two avoiding grooves correspond to the left and right side plates respectively, and the handles 1211 are exposed outside the shell 10 from the avoiding grooves.

[0065] In some embodiments, the handle 1211 is made of metal material, specifically, the handle 1211 can be made of aluminum alloy material, and the inside is hollow, which is beneficial to the lightweight of the battery pack 100, and the strength and durability of the aluminum alloy handle 1211 are relatively high, which is beneficial to increase the reliability of the handle 1211 and prolong the service life of the handle 1211.

[0066] In other embodiments, the two avoiding grooves can also be arranged corresponding to the front and rear side plates respectively.

[0067] In other embodiments, the handle 1211 can also be made of other materials, which can be set according to actual needs, and is not limited here.

[0068] In other embodiments, the handle 1211 can also be set as a flexible handle, which has good adaptability and flexibility, and has better comfort and touch.

[0069] In the embodiment of the present application, the side of the bottom shell 111 away from the battery module 20 is also provided with a supporting part, and an anti-skid structure is further arranged on the supporting part. Optionally, the anti-skid structure can be an anti-skid silica gel pad, an anti-skid rubber pad, or an anti-skid pattern arranged on the supporting part.

[0070] In other embodiments, the side of the bottom shell 111 away from the battery module 20 can also be provided with a fixing groove, and a relatively thick anti-skid pad is arranged in the fixing groove. The material of the anti-skid pad can be selected according to actual needs, and is not limited here.

[0071] In the embodiment of the present application, the battery pack 100 further comprises an expansion socket. The expansion socket is a socket device designed to solve the problem of insufficient number of power sockets. The expansion socket is arranged on the left and right side plates.

[0072] In other embodiments, the expansion socket can also be arranged on at least one of the top shell 121, the bottom shell 111, the left side cover 112, the right side cover 113, the front side cover 114, and the rear side cover 115. Specifically, the expansion socket can be arranged according to actual needs, and is not limited here.

[0073] Please refer to FIG. 3 and FIG. 4. In some embodiments, the first positioning part 1112 comprises a plurality of first positioning grooves 11121, and the second positioning part 1213 comprises a plurality of first positioning grooves 11121 corresponding to the second positioning grooves 12131 respectively.

[0074] Thus, the first positioning slot 11121 and the second positioning slot 12131 are used to fix the battery module 20.

[0075] Specifically, the first positioning slot 11121 is arranged on the first inner wall 1111 of the bottom shell 111, and the second positioning slot 12131 is arranged on the second inner wall 1212 of the top shell 121.

[0076] Further, the number of the first positioning slot 11121 is multiple, and the multiple first positioning slots 11121 are arranged in an array, the number of the second positioning slot 12131 is multiple, and the multiple second positioning slots 12131 are arranged in an array, and the second positioning slot 12131 is arranged in one-to-one correspondence with the first positioning slot 11121. In this embodiment, the battery module 20 includes multiple array-arranged battery cells 21, and one second positioning slot 12131 cooperates with one first positioning slot 11121 to fix one battery cell 21 of the battery module 20.

[0077] Please refer to FIGS. 1 to 4, in some embodiments, the first shell 11 includes multiple first connecting columns 1113, the second shell 12 includes multiple second connecting columns 1214, and the first connecting column 1113 is connected with the second connecting column 1214 when the first shell 11 is connected with the second shell 12.

[0078] Thus, the first connecting column 1113 and the second connecting column 1214 are used to connect the first shell 11 and the second shell 12, and arranging the first connecting column 1113 is beneficial to improve the structural strength of the first shell 11, and arranging the second connecting column 1214 is beneficial to improve the structural strength of the second shell 12.

[0079] In some embodiments, the first connecting column 1113 is arranged on the first inner wall 1111 of the bottom shell 111, multiple first connecting columns 1113 are arranged in multiple rows and multiple columns in an array, and a first positioning slot 11121 is defined between two adjacent rows and two adjacent columns of the first connecting columns 1113, and the array arrangement of the multiple first connecting columns 1113 realizes the interval arrangement of the first positioning slots 11121.

[0080] Similarly, the second connecting column 1214 is arranged on the second inner wall 1212 of the top shell 121, multiple second connecting columns 1214 are arranged in multiple rows and multiple columns in an array, and a second positioning slot 12131 is defined between two adjacent rows and two adjacent columns of the second connecting columns 1214, and the array arrangement of the multiple first connecting columns 1113 realizes the interval arrangement of the first positioning slots 11121.

[0081] Further, the first connecting column 1113 and the bottom shell 111 are in an integrated structure formed by integral molding, and the second connecting column 1214 and the top shell 121 are in an integrated structure formed by integral molding.

[0082] It can be understood that the first positioning groove 11121 and the second positioning groove 12131 arranged at intervals are formed by the plurality of first connecting columns 1113 and the plurality of second connecting columns 1214, which can ensure that the plurality of battery cells 21 are arranged at intervals, reduce the problem of thermal expansion caused by direct contact of the plurality of battery cells 21, and reduce the situation that the plurality of battery cells 21 are extruded and deformed due to collision of the battery pack 100, thereby reducing the safety risk.

[0083] In some embodiments, the first positioning groove 11121 and the second positioning groove 12131 in the shape of a cylinder can be defined between the two rows of two columns of first connecting columns 1113 and the two rows of two columns of second connecting columns 1214, so as to ensure that the battery cell 21 in the shape of a cylinder is stably arranged, thereby improving the stability of the battery cell 21 in the shape of a cylinder.

[0084] In detail, the outer peripheral wall of each first connecting column 1113 and second connecting column 1214 is formed in an arc shape to surround the first positioning groove 11121 and the second positioning groove 12131 in the shape of a cylinder, so that the cylindrical groove hole matches the outer peripheral wall of the battery cell 21, thereby ensuring the connection effect of the battery cell 21 and the positioning part and reducing the shaking phenomenon.

[0085] In other embodiments, the first positioning groove 11121 and the second positioning groove 12131 can also have other shapes, such as a rectangular shape, so as to ensure that the battery cell 21 in different shapes is stably arranged, which is not limited specifically herein.

[0086] In some embodiments, since the first connecting column 1113 and the second connecting column 1214 have a relatively long length, in order to improve the structural strength thereof, the bottom shell 111 is further provided with a first reinforcing rib, the first reinforcing rib is in the shape of a triangle or a trapezoid, one end of the first reinforcing rib is connected to the first inner wall 1111, and the other end of the first reinforcing rib is connected to the first connecting column 1113. Similarly, the top shell 121 is further provided with a second reinforcing rib, the second reinforcing rib is in the shape of a triangle or a trapezoid, one end of the second reinforcing rib is connected to the second inner wall 1212, and the other end of the second reinforcing rib is connected to the second connecting column 1214.

[0087] Further, each first connecting column 1113 is connected with a plurality of first reinforcing ribs, and each second connecting column 1214 is connected with a plurality of second reinforcing ribs. In the embodiments of the present application, each first connecting column 1113 is connected with at least three first reinforcing ribs, and each second connecting column 1214 is connected with at least three second reinforcing ribs.

[0088] Further, in order to further improve the structural strength of the first connecting column 1113, the first reinforcing ribs arranged between the two adjacent first connecting columns 1113 on the outer side of the battery module 20 are connected, and the second reinforcing ribs arranged between the two adjacent second connecting columns 1214 on the outer side of the battery module 20 are also connected.

[0089] In some embodiments, the shell 10 comprises a plurality of fasteners respectively fastening the corresponding first connecting column 1113 and the second connecting column 1214 1214, so as to connect the first shell 11 and the second shell 12.

[0090] In this way, the detachable connection of the first connecting column 1113 and the second connecting column 1214 is realized by the fasteners, which is conducive to reducing the maintenance difficulty of the battery pack 100.

[0091] Specifically, in the embodiments of the present application, the first connecting column 1113 on the bottom shell 111 extends to the top shell 121 along the height direction of the battery pack 100, the second connecting column 1214 on the top shell 121 extends to the bottom shell 111 along the height direction of the battery pack 100, the first connecting column 1113 and the second connecting column 1214 are both internally provided with a hole, and a threaded hole is formed at the opposite end, the second connecting column 1214 is internally provided with a fastener that can be screwed into the threaded hole and realizes the detachable connection of the first connecting column 1113 and the second connecting column 1214 through threaded connection.

[0092] In other embodiments, the fastener that can be screwed into the threaded hole can also be arranged inside the first connecting column 1113.

[0093] In other embodiments, the first connecting column 1113 and the second connecting column 1214 can also be detachably connected through buckles, latches and the like.

[0094] Please refer to FIG. 1 and FIG. 5, in some embodiments, the battery module 20 comprises a layer of battery cells 21, both ends of the battery cells 21 are respectively inserted into the first positioning part 1112 and the second positioning part 1213.

[0095] In this way, the battery module 20 of the single-layer battery cells 21 can be fixed through the first positioning part 1112 and the second positioning part 1213, and the battery support is completely cancelled, which is conducive to reducing the production cost and assembly difficulty.

[0096] Specifically, one end of the battery cells 21 is inserted into the first positioning groove 11121 of the first positioning part 1112, and the other end is arranged in the second positioning groove 12131 of the second positioning part 1213, and the cooperation of the first positioning groove 11121 and the second positioning groove 12131 realizes the fixation of the battery cells 21.

[0097] In some embodiments, the battery cells 21 can be in the form of a sheet or a block, and correspondingly, the first positioning groove 11121 and the second positioning groove 12131 should be arranged as square grooves matched with the battery cells 21 to ensure the stability of the battery cells 21.

[0098] In another example, the battery cell 21 can also be in a cylindrical shape, and the first positioning slot 11121 and the second positioning slot 12131 should be set as a circular slot matched with the battery cell 21 to ensure the stability of the battery cell 21.

[0099] In other examples, the battery cell 21 can also be in other shapes, and the first positioning slot 11121 and the second positioning slot 12131 should be set as a type slot matched with the battery cell 21 to ensure the stable placement of the battery cell 21, which is not limited here.

[0100] Referring to FIG. 5, in some embodiments, the battery cell 21 includes two electrodes 211 respectively located at two ends, and the battery pack 100 further includes a first electrical connecting piece 30, which is arranged at the first positioning part 1112 and the second positioning part 1213 respectively to connect the electrodes 211 of the same side of the adjacent battery cells 21.

[0101] In this way, the first electrical connecting piece 30 is arranged at the first positioning part 1112 and the second positioning part 1213 respectively, which is conducive to further improving the space utilization rate inside the battery pack 100.

[0102] Specifically, the first electrical connecting piece 30 can connect the positive poles and the negative poles of the at least one battery cell 21 alternately, so that the positive pole and the negative pole connected to the two ends of the first electrical connecting piece 30 are positive connection ports and negative connection ports respectively, that is, the first electrical connecting piece 30 is connected in series with the at least one battery cell 21, so that the at least one battery cell 21 forms a large-voltage output power supply, thereby ensuring to meet the power demand of the user.

[0103] Further, the bottom of the first positioning slot 11121 and the second positioning slot 12131 is provided with a through hole, and the electrode 311 of the battery cell 21 is connected to the first electrical connecting piece 30 after passing through the through hole.

[0104] Referring to FIGS. 6, 9 and 10, in some embodiments, the battery module 20 includes a first battery module 23 and a second battery module 24 stacked, the first battery module 23 includes a first support 40 connected with the first shell 11 and a plurality of battery cells 21, the first support 40 is provided with a third positioning part 41, and the battery cells 21 of the first battery module 23 are respectively inserted into the first positioning part 1112 and the third positioning part 41.

[0105] In this way, the first support 40 is used to assist in fixing the first battery module 23 to avoid no supporting point in the middle of the stacked first battery module 23 and the second battery module 24, which leads to unstable fixation.

[0106] In some embodiments, the second battery module 24 comprises a second support 50 connected with the second shell 12, and a plurality of battery cells 21, the second support 50 is provided with a fourth positioning part 51, and the two ends of the battery cells 21 of the second battery module 24 are respectively inserted into the second positioning part 1213 and the fourth positioning part 51.

[0107] Specifically, in some embodiments, the first battery module 23 and the second battery module 24 each comprise a plurality of battery cells 21, and the plurality of battery cells 21 are arranged in an upright array, that is, the length direction of the battery cells 21 is arranged along the vertical direction, so as to ensure the minimum space occupation.

[0108] In other embodiments, the plurality of battery cells 21 can also be arranged in other directions according to actual needs.

[0109] In other embodiments, the first battery module 23 and the second battery module 24 can also be placed in other ways according to actual needs.

[0110] Referring to FIG. 8, in some embodiments, the battery pack 100 further comprises a second electrical connector 60, which is arranged on the first support 40 and the second support 50 respectively, so as to connect the same side electrodes 211 of the adjacent plurality of battery cells 21.

[0111] Specifically, the second electrical connector 60 can sequentially and alternately connect the positive poles and the negative poles of at least one battery cell 21, so that the positive pole and the negative pole connected with the two ends of the second electrical connector 60 are respectively a positive connection port and a negative connection port, that is, the second electrical connector 60 connects at least one battery cell 21 in series, so that at least one battery cell 21 forms a large-voltage output power supply, thereby ensuring to meet the power demand of the user.

[0112] Referring to FIG. 7, in some embodiments, the first end of the battery cell 21 is provided with two electrodes 211.

[0113] In this way, the electrodes 211 of the two layers of battery cells 21 can be arranged at intervals, so as to avoid short circuit caused by the mistaken contact of the electrodes 211 of the two layers of battery cells 21.

[0114] Specifically, in some embodiments, the battery cell 21 has two electrodes 211, and the two electrodes 211 are arranged on the same side of the battery cell 21, and when arranged in an array, the electrodes 211 should be concentratedly arranged on the same side of the battery pack, so as to facilitate the connection between the battery cells 21.

[0115] Further, the first end of the battery cell 21 of the first battery module 23 is inserted into the first positioning part 1112, and the first end of the battery cell 21 of the second battery module 24 is inserted into the second positioning part 1213, so that the electrodes 211 of the battery cell 21 of the first battery module 23 are oppositely arranged with the electrodes 211 of the battery cell 21 of the second battery module 24.

[0116] Further, since the electrodes 211 of the battery cells 21 of the first battery module 23 are oppositely arranged with the electrodes 211 of the battery cells 21 of the second battery module 24, an insulation layer needs to be additionally arranged between the two battery packs to avoid misconnection of the battery cells 21 between the two battery packs, causing short circuit of the battery pack and other problems.

[0117] In some embodiments, the second end of the battery cells 21 of the first battery module 23 can be inserted into the first positioning portion 1112, and the second end of the battery cells 21 of the second battery module 24 can be inserted into the second positioning portion 1213. Since the electrodes 211 are concentrated on the same side of the battery pack, when stacked in this way, the electrodes 211 of the two battery packs are oppositely arranged, so that an insulation layer does not need to be arranged between the two battery packs, thereby reducing the production cost and assembly difficulty.

[0118] In some embodiments, the battery cell 21 has two electrodes 211, which can be arranged on opposite sides of the battery cell 21, respectively. When arranged in an array, the electrodes 211 are concentrated on the two sides of the battery pack, respectively, to facilitate the connection between the battery cells 21.

[0119] Further, since the electrodes 211 are concentrated on the two sides of the battery pack, respectively, when the two battery packs are stacked in the vertical direction, an insulation layer needs to be additionally arranged between the two battery packs to avoid misconnection of the battery cells 21 between the two battery packs, causing short circuit of the battery pack and other problems.

[0120] Referring to FIG. 6, in some embodiments, the battery module 20 further includes a connecting piece 22, which is used to connect the first battery module 23 and the second battery module 24.

[0121] In this way, the connecting piece 22 connects and fixes the first battery module 23 and the second battery module 24, thereby facilitating the assembly of the battery module 20 and facilitating the reduction of the assembly difficulty of the battery pack 100.

[0122] Specifically, the connecting piece 22 is a sheet metal part. The sheet metal part refers to a metal product processed by a specific sheet metal process. This process mainly targets metal sheets (usually below 6mm), including a series of comprehensive cold working processes, such as shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming, etc. The sheet metal part has the characteristic that the thickness of the same part remains consistent. The sheet metal part has the characteristics of light weight, high strength, good electrical conductivity (can be used for electromagnetic shielding), low cost, and suitability for mass production, etc.

[0123] In this way, the sheet metal part usually has high tensile strength and compressive strength, which is conducive to improving the service life of the connecting piece 22, and the sheet metal part has high processing efficiency, which is conducive to shortening the processing cycle.

[0124] In the embodiment of the present application, the connecting piece 22 is formed by shearing and bending processing, and burrs possibly generated in the processing are removed, and the sharp corner part of the connecting piece 22 is rounded, so as to prevent the connecting piece 22 from hurting the hands of the operator during assembly or maintenance.

[0125] In other embodiments, the connecting piece 22 can also be formed by other sheet metal processing, for example, one-time stamping forming, and the specific sheet metal processing can be selected according to actual needs, which is not limited herein.

[0126] In some embodiments, the connecting piece 22 is made of galvanized sheet.

[0127] In this way, the galvanized sheet has relatively high strength and durability, which is beneficial to improve the service life of the connecting piece 22.

[0128] Specifically, the galvanized sheet refers to a steel sheet coated with a layer of zinc on the surface of the steel sheet in order to prevent the surface of the steel sheet from being corroded and prolong the service life.

[0129] In the embodiment of the present application, the connecting piece 22 is made of galvanized sheet and processed by sheet metal processing, and it should be noted that before the galvanized sheet is processed by sheet metal processing, it is necessary to ensure that the surface of the galvanized sheet is clean, free of oil stains, rust and impurities. These impurities may affect the processing precision and product quality. In addition, it is also necessary to check whether the galvanized layer is uniform and has no peeling phenomenon. The non-uniform galvanized layer may affect the corrosion resistance and appearance of the product.

[0130] When the galvanized sheet is processed by sheet metal processing, the knife mark generated in the punching process should meet the safety requirements (not scratch the hand) and the part size tolerance, which is generally not more than 10% to 20% of the thickness of the sheet. The depth of the knife mark generated in the bending process should be controlled within 0.3mm.

[0131] In other embodiments, the connecting piece 22 can also be made of other metal materials and processed by sheet metal processing, and the specific metal material can be selected according to actual needs, which is not limited herein.

[0132] In other embodiments, the connecting piece 22 can also be made of non-metal materials with standard strength, and the specific material can be selected according to actual needs, which is not limited herein.

[0133] In the description of the application, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearance of the above terms in various places in the description are not necessarily intended to refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0134] Furthermore, the terms "first", "second" or the like are used merely to describe corresponding features, and do not imply or connote relative importance or a quantity of the specified technical features. Thus, a feature defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the application, the meaning of "plurality" is at least two, for example two, three, unless otherwise explicitly specified.

[0135] Although the embodiments of the application have been shown and described above, it is to be understood that the above-described embodiments are merely exemplary, and are not to be taken as limiting the present application. Within the scope of the present application, various changes, modifications, substitutions and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present application, which are defined by the claims and their equivalents.

Claims

1. A battery pack, wherein, The battery pack comprises: a shell comprising a first shell and a second shell, the first shell being detachably connected to the second shell, the first shell comprising a first inner wall opposite to the second shell and being provided with a first positioning part at the first inner wall, and the second shell comprising a second inner wall opposite to the first shell and being provided with a second positioning part at the second inner wall; a battery module, both ends of the battery module being respectively inserted into the first positioning part and the second positioning part.

2. The battery pack of claim 1, wherein, The first shell comprises a bottom shell, the first inner wall comprises an inner bottom wall of the shell, the second shell comprises a top shell, and the second inner wall comprises an inner top wall of the shell.

3. The battery pack of claim 1 or 2, wherein, The first positioning part comprises a plurality of first positioning grooves, and the second positioning part comprises a plurality of second positioning grooves corresponding to the first positioning grooves respectively.

4. The battery pack of any one of claims 1-3, wherein, The first shell comprises a plurality of first connecting columns, the second shell comprises a plurality of second connecting columns, and the first connecting columns are connected to the second connecting columns when the first shell is connected to the second shell.

5. The battery pack of any one of claims 1-4, wherein, The battery module comprises a layer of battery cells, both ends of the battery cells being respectively inserted into the first positioning part and the second positioning part.

6. The battery pack of claim 5, wherein, The battery cell comprises two electrodes respectively located at both ends, and the battery pack further comprises a first electrical connecting member, the first electrical connecting member being arranged at the first positioning part and the second positioning part to connect same-side electrodes of adjacent battery cells.

7. The battery pack of any one of claims 1-6, wherein, The battery module comprises a first battery module and a second battery module stacked together, the first battery module comprising a first support connected to the first shell and a plurality of battery cells, the first support being provided with a third positioning part, and both ends of the battery cells of the first battery module being respectively inserted into the first positioning part and the third positioning part.

8. The battery pack of claim 7, wherein, The second battery module comprises a second support connected to the second shell and a plurality of battery cells, the second support being provided with a fourth positioning part, and both ends of the battery cells of the second battery module being respectively inserted into the second positioning part and the fourth positioning part.

9. The battery pack of claim 8, wherein, The battery pack further comprises a second electrical connecting member, the second electrical connecting member being arranged at the first support and the second support respectively to connect same-side electrodes of adjacent battery cells.

10. The battery pack of claim 9, wherein, The first end of the battery cell is provided with two electrodes.

11. The battery pack of any one of claims 8-10, wherein, The battery pack further comprises a connecting member for connecting the first battery module and the second battery module.

12. An energy storage power supply, wherein, The battery pack comprises the battery pack according to any one of claims 1-11.

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