Battery pack and energy storage power supply

Abstract

The utility model discloses a battery pack and an energy storage power source.The battery pack comprises a shell and a battery module, the shell comprises a first shell and a second shell, the first shell is detachably connected with the second shell, the first shell comprises a first inner wall opposite to the second shell, and a first positioning part is arranged on the first inner wall; the second shell comprises a second inner wall opposite to the first shell, and a second positioning part is arranged on the second inner wall; and two ends of the battery module are respectively inserted into the first positioning part and the second positioning part. According to the battery pack provided by the invention, the first shell is provided with the first positioning part and the second shell is provided with the second positioning part, so that the first shell and the second shell can replace a common battery bracket in related technologies, parts in the battery pack are effectively reduced, the production cost and the assembly difficulty are reduced, and meanwhile, the battery pack is convenient to assemble and disassemble. The internal space utilization rate of the battery pack is improved, and the miniaturization of the battery pack is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and more specifically, to a battery pack and an energy storage power supply. Background Art

[0002] In the related art, two battery holders are generally used to fix the two ends of the battery cell and the corresponding electrical connectors and acquisition boards respectively, and then the battery pack is installed in the shell. This results in a large number of parts and components of the energy storage power supply, a large volume, high cost, and a complicated installation procedure. On the other hand, since the shell needs to reserve installation space to install the battery pack, the volume of the energy storage power supply is further increased. Utility Model Content

[0003] Embodiments of the present application provide a battery pack and an energy storage power supply.

[0004] The battery pack of the embodiment of the present application includes:

[0005] A housing, the housing comprising a first housing and a second housing, the first housing being detachably connected to the second housing, the first housing comprising a first inner wall opposite to the second housing and provided with a first positioning portion on the first inner wall, the second housing comprising a second inner wall opposite to the first housing and provided with a second positioning portion on the second inner wall;

[0006] A battery module, wherein two ends of the battery module are respectively inserted into the first positioning portion and the second positioning portion.

[0007] The battery pack provided in the present application, by providing a first positioning portion on the first shell and a second positioning portion on the second shell, allows the first shell and the second shell to replace the battery holder commonly used in the related art, effectively reducing the components inside the battery pack, which is beneficial to reducing production costs and assembly difficulty, and at the same time, is beneficial to improving the space utilization inside the battery pack and facilitating the miniaturization of the battery pack.

[0008] 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.

[0009] In this way, the first shell and the second shell are processed and formed separately, which is conducive to reducing the difficulty of processing.

[0010] In some embodiments, the first positioning portion includes a plurality of first positioning grooves, and the second positioning portion includes second positioning grooves respectively corresponding to the plurality of first positioning grooves.

[0011] In this way, the first positioning groove and the second positioning groove are used to fix the battery module.

[0012] In some embodiments, the first shell includes a plurality of first connecting columns, the second shell includes 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.

[0013] In this way, the first connecting column and the second connecting column are used to connect the first shell and the second shell, and the provision of the first connecting column is beneficial to improving the structural strength of the first shell, and the provision of the second connecting column is beneficial to improving the structural strength of the second shell.

[0014] In some embodiments, the battery module includes a layer of battery cells, and two ends of the battery cells are respectively inserted into the first positioning portion and the second positioning portion.

[0015] In this way, the battery module of the single-layer battery cell can be fixed by the first positioning portion and the second positioning portion, and the battery bracket is completely eliminated, which is beneficial to reducing production costs and assembly difficulty.

[0016] In some embodiments, the battery cell includes two electrodes located at both ends respectively, and the battery pack also includes a first electrical connector, which is respectively arranged on the first positioning portion and the second positioning portion to connect the same-side electrodes of multiple adjacent battery cells.

[0017] In this way, the first electrical connector is respectively arranged on the first positioning portion and the second positioning portion, which is beneficial to further improve the space utilization rate inside the battery pack.

[0018] In some embodiments, the battery module includes a stacked first battery module and a second battery module, the first battery module includes a first bracket connected to a first shell and a plurality of battery cells, the first bracket is provided with a third positioning portion, and both ends of the battery cells of the first battery module are respectively inserted into the first positioning portion and the third positioning portion.

[0019] In this way, the first bracket is used to assist in fixing the first battery module to avoid unstable fixation due to lack of a supporting point between the stacked first battery module and the second battery module.

[0020] In some embodiments, the second battery module includes a second bracket connected to the second shell and a plurality of the battery cells, the second bracket is provided with a fourth positioning portion, and both ends of the battery cells of the second battery module are respectively inserted into the second positioning portion and the fourth positioning portion.

[0021] In this way, the double-layer battery module can fix the first end of each layer of battery cells through the first positioning portion and the second positioning portion, eliminating some battery brackets, which is beneficial to reducing production costs and assembly difficulty.

[0022] In some embodiments, the battery pack further includes a second electrical connector, which is disposed on the first bracket and the second bracket, respectively, to connect electrodes on the same side of a plurality of adjacent battery cells.

[0023] In this way, the second electrical connector is used to connect in series the electrodes of the battery cell located in the first bracket and the second bracket.

[0024] In some embodiments, the first end of the battery cell is provided with two electrodes.

[0025] In this way, the electrodes of the two layers of battery cells can be spaced apart to prevent the electrodes of the two layers from accidentally contacting each other and causing a short circuit.

[0026] In some embodiments, the battery module further includes a connector, and the connector is used to connect the first battery module and the second battery module.

[0027] In this way, the connector connects and fixes the first battery module and the second battery module, thereby facilitating the overall assembly of the battery modules and helping to reduce the difficulty of assembling the battery pack.

[0028] An energy storage power supply in another embodiment of the present application includes a battery pack as described in any one of the above items.

[0029] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a cross-sectional view of a battery pack according to an embodiment of the present application;

[0032] Figure 2 is an exploded view of a battery pack according to an embodiment of the present application;

[0033] Figure 3 is a schematic structural diagram of a bottom shell of a battery pack according to an embodiment of the present application;

[0034] Figure 4 is a schematic structural diagram of a top case of a battery pack according to an embodiment of the present application;

[0035] Figure 5 is a schematic structural diagram of a battery module of a battery pack according to an embodiment of the present application;

[0036] Figure 6 is an exploded view of a battery pack according to another embodiment of the present application;

[0037] Figure 7 is a schematic structural diagram of a battery cell of a battery module of a battery pack according to another embodiment of the present application;

[0038] Figure 8 is a schematic structural diagram of a first battery module of a battery pack according to another embodiment of the present application;

[0039] Fig. 9 is a schematic structural diagram of a first bracket of a battery pack according to another embodiment of the present application;

[0040] Fig.10 It is a schematic structural diagram of a second bracket of a battery pack according to another embodiment of the present application.

[0041] Description of main component symbols: battery pack 100, shell 10, first shell 11, bottom shell 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 shell 12, top shell 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, connector 22, first battery module 23, second battery module 24, first electrical connector 30, first bracket 40, third positioning portion 41, second bracket 50, fourth positioning portion 51, second electrical connector 60. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. In the description of the present application, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The disclosure of this article provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings 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 repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0046] In the related art, two battery holders are generally used to fix the two ends of the battery cell and the corresponding electrical connectors and acquisition boards respectively, and then the battery pack is installed in the shell. This results in a large number of parts and components of the energy storage power supply, a large volume, high cost, and a complicated installation procedure. On the other hand, since the shell needs to reserve installation space to install the battery pack, the volume of the energy storage power supply is further increased.

[0047] See also Figure 1The energy storage power supply of the embodiment of the present application includes an inverter and a battery pack 100, the inverter is electrically connected to 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 to the second shell 12, the first shell 11 includes a first inner wall 1111 opposite to the second shell 12 and a first positioning portion 1112 is provided on the first inner wall 1111, the second shell 12 includes a second inner wall 1212 opposite to the first shell 11 and a second positioning portion 1213 is provided on the second inner wall 1212; the two ends of the battery module 20 are respectively inserted into the first positioning portion 1112 and the second positioning portion 1213.

[0048] The battery pack 100 provided in the present application, by setting a first positioning portion 1112 on the first shell 11 and a second positioning portion 1213 on the second shell 12, allows the first shell 11 and the second shell 12 to replace the battery holder commonly used in the related art, effectively reducing the components inside the battery pack 100, which is beneficial to reducing production costs and assembly difficulty, and at the same time, is beneficial to improving the space utilization inside the battery pack 100 and facilitating the miniaturization of the battery pack 100.

[0049] Specifically, the battery pack 100 is a device that can store electrical energy and release it when needed, and its main function is to provide a 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 the electrical energy into chemical energy for storage; when the system needs to use electrical energy, the controller will first convert the DC electrical energy stored in the battery pack into AC electrical energy, and then output it.

[0050] In the embodiment of the present application, the first shell 11 and the second shell 12 enclose a receiving cavity, and the battery module 20 is disposed in the receiving cavity.

[0051] See also Figure 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 body 10, the second shell 12 includes a top shell 121, and the second inner wall 1212 includes an inner top wall 12121 of the shell body 10.

[0052] In this way, the first shell 11 and the second shell 12 are formed separately, which is helpful to reduce the difficulty of processing.

[0053] Specifically, in the embodiment 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 body 10, the inner bottom wall 11111 is arranged on the bottom shell 111, the first positioning portion 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 body 10, the inner top wall 12121 is arranged on the top shell 121, and the second positioning portion 1213 is arranged on the inner top wall 12121.

[0054] In other embodiments, the left side cover 112 , the right side cover 113 , the front side cover 114 , and the rear side cover 115 may also be partially or completely part of the top case 121 .

[0055] In other embodiments, the first positioning portion 1112 is disposed at other positions of the first inner wall 1111 excluding the inner bottom wall 11111, and the inner bottom wall 11111 may also be disposed at other positions of the first shell 11 excluding the bottom shell 111; the second positioning portion 1213 is disposed at other positions of the second inner wall 1212 excluding the inner top wall 12121, and the inner top wall 12121 may also be disposed at other positions of the second shell 12 excluding the top shell 121. The specific settings may be made according to actual needs and are not limited here.

[0056] In the embodiment of the present application, the top shell 121, the bottom shell 111, the left cover 112, the right cover 113, the front cover 114 and the rear cover 115 are all one-piece structures formed by integral injection molding, and then connected by fasteners or other connection methods.

[0057] In other embodiments, the housing 10 may also be split into any parts according to actual needs, and each part may be an integral structure formed by integral processing, or may be produced by other processing methods.

[0058] Furthermore, the top shell 121 , the bottom shell 111 , the left cover 112 , the right cover 113 , the front cover 114 and the rear cover 115 together form a receiving cavity, and the battery module 20 is disposed in the receiving cavity.

[0059] In some embodiments, one end of the battery module 20 is fixed to the top case 121 , and the other end of the battery module 20 is fixed to the bottom case 111 .

[0060] In other embodiments, the two ends of the battery module 20 may also be fixed to the left cover 112 and the right cover 113 respectively, or to the front cover 114 and the rear cover 115 respectively. The specific selection can be made according to actual needs and is not specified here.

[0061] In the embodiment of the present application, two handles 1211 are provided on the top shell 121 , and the handles 1211 are used for moving and carrying the battery pack 100 .

[0062] Furthermore, two avoidance grooves are provided on the top shell 121 , and the two avoidance grooves are respectively arranged corresponding to the left and right side panels, and the handle 1211 passes through the avoidance grooves and is exposed outside the shell 10 .

[0063] In some embodiments, the handle 1211 is made of metal. Specifically, the handle 1211 can be made of aluminum alloy with a hollow interior, which is beneficial to lightweighting the battery pack 100. The aluminum alloy handle 1211 has high strength and durability, which is beneficial to increasing the reliability of the handle 1211 and extending the service life of the handle 1211.

[0064] In other embodiments, two avoidance grooves may also be provided corresponding to the front and rear side panels respectively.

[0065] In other embodiments, the handle 1211 may also be made of other materials, which may be specifically configured according to actual needs and is not limited here.

[0066] In other embodiments, the handle 1211 may also be configured as a flexible handle, which has good adaptability and flexibility, and has better comfort and touch.

[0067] In the embodiment of the present application, a support portion is further provided on the side of the bottom shell 111 away from the battery module 20, and an anti-slip structure is also provided on the support portion. Optionally, the anti-slip structure can be an anti-slip silicone pad, an anti-slip rubber pad, or an anti-slip pattern provided on the support portion.

[0068] In other embodiments, a fixing groove may be provided on one side of the bottom shell 111 away from the battery module 20 , and a thicker anti-skid pad may be provided in the fixing groove. The material of the anti-skid pad may be selected according to actual needs and is not limited here.

[0069] In the embodiment of the present application, the battery pack 100 also includes an expansion socket, which 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 panels.

[0070] In other embodiments, the expansion socket may also be set on at least one of the top shell 121, the bottom shell 111, the left cover 112, the right cover 113, the front cover 114 and the rear cover 115. The specific setting can be based on actual needs and is not limited here.

[0071] See also Figure 3 and Figure 4In some embodiments, the first positioning portion 1112 includes a plurality of first positioning grooves 11121 , and the second positioning portion 1213 includes a plurality of second positioning grooves 12131 respectively corresponding to the first positioning grooves 11121 .

[0072] In this way, the first positioning groove 11121 and the second positioning groove 12131 are used to fix the battery module 20 .

[0073] Specifically, the first positioning groove 11121 is disposed on the first inner wall 1111 of the bottom shell 111 , and the second positioning groove 12131 is disposed on the second inner wall 1212 of the top shell 121 .

[0074] Further, the number of the first positioning grooves 11121 is multiple, and the multiple first positioning grooves 11121 are arranged in an array, the number of the second positioning grooves 12131 is multiple, and the multiple second positioning grooves 12131 are arranged in an array, and the second positioning grooves 12131 are arranged in a one-to-one correspondence with the first positioning grooves 11121. In this embodiment, the battery module 20 includes a plurality of battery cells 21 arranged in an array, and one second positioning groove 12131 cooperates with one first positioning groove 11121 to fix one battery cell 21 of the battery module 20.

[0075] See also Figures 1 to 4 In some embodiments, the first shell 11 includes a plurality of first connecting columns 1113 , and the second shell 12 includes a plurality of second connecting columns 1214 . When the first shell 11 is connected to the second shell 12 , the first connecting columns 1113 are connected to the second connecting columns 1214 .

[0076] 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 the first connecting column 1113 is helpful to improve the structural strength of the first shell 11 , and the second connecting column 1214 is helpful to improve the structural strength of the second shell 12 .

[0077] In some embodiments, the first connecting column 1113 is disposed on the first inner wall 1111 of the bottom shell 111, and multiple first connecting columns 1113 are arranged in an array of multiple rows and columns, and a first positioning groove 11121 is defined between two adjacent rows and columns of the first connecting columns 1113. The array arrangement of the multiple first connecting columns 1113 realizes the spaced arrangement of the first positioning grooves 11121.

[0078] Similarly, the second connecting column 1214 is set on the second inner wall 1212 of the top shell 121, and multiple second connecting columns 1214 are arranged in an array of multiple rows and columns, and second positioning grooves 12131 are defined between two adjacent rows and columns of second connecting columns 1214. The array arrangement of multiple first connecting columns 1113 realizes the spaced placement of the first positioning grooves 11121.

[0079] Furthermore, the first connecting column 1113 and the bottom shell 111 are an integral structure formed by integral processing, and the second connecting column 1214 and the top shell 121 are an integral structure formed by integral processing.

[0080] It can be understood that by forming the first positioning grooves 11121 and the second positioning grooves 12131 arranged at intervals by the plurality of first connecting pillars 1113 and the second connecting pillars 1214, the plurality of battery cells 21 can be placed at intervals, and problems such as thermal expansion caused by direct contact of the plurality of battery cells 21 can be reduced, as well as the situation where the battery pack 100 is squeezed and deformed by each other due to collision, thereby reducing safety risks.

[0081] In some embodiments, cylindrical first positioning grooves 11121 and second positioning grooves 12131 may be defined between two adjacent rows and two columns of first connecting pillars 1113 and two adjacent rows and two columns of second connecting pillars 1214 to ensure that the cylindrical battery cell 21 is stably placed, thereby improving the stability of the cylindrical battery cell 21.

[0082] In detail, the outer walls of each first connecting column 1113 and the second connecting column 1214 form an arc-shaped surface to enclose a first cylindrical positioning groove 11121 and a second positioning groove 12131, so that the cylindrical groove hole matches the outer wall of the battery cell 21, thereby ensuring the connection effect between the battery cell 21 and the positioning part and reducing shaking.

[0083] In other embodiments, the first positioning groove 11121 and the second positioning groove 12131 may also be in other shapes, such as a rectangle, etc., to ensure that the battery cells 21 of different shapes are stably placed, and no specific limitation is made here.

[0084] In some embodiments, since the first connecting column 1113 and the second connecting column 1214 are relatively long, in order to improve their structural strength, a first reinforcing rib is further provided on the bottom shell 111, the first reinforcing rib is triangular or trapezoidal, 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, a second reinforcing rib is further provided on the top shell 121, the second reinforcing rib is triangular or trapezoidal, 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.

[0085] Furthermore, each first connecting column 1113 is connected to multiple first reinforcing ribs, and similarly, each second connecting column 1214 is connected to multiple second reinforcing ribs. In the embodiment of the present application, each first connecting column 1113 is connected to at least three first reinforcing ribs, and similarly, each second connecting column 1214 is connected to at least three second reinforcing ribs.

[0086] Furthermore, in order to further enhance the structural strength of the first connecting column 1113, the first reinforcing ribs between two adjacent first connecting columns 1113 on the outside of the battery module 20 are connected. Similarly, the second reinforcing ribs between two adjacent second connecting columns 1214 on the outside of the battery module 20 are also connected.

[0087] In some embodiments, the housing 10 includes a plurality of fasteners, which respectively fasten and connect the corresponding first connecting columns 1113 and second connecting columns 1214 to 1214, so that the first shell 11 is connected to the second shell 12.

[0088] In this way, the first connecting column 1113 and the second connecting column 1214 are detachably connected by fasteners, which helps to reduce the difficulty of maintaining the battery pack 100.

[0089] Specifically, in the embodiment of the present application, the first connecting column 1113 on the bottom shell 111 extends toward the top shell 121 along the height direction of the battery pack 100, and the second connecting column 1214 on the top shell 121 extends toward the bottom shell 111 along the height direction of the battery pack 100. The first connecting column 1113 and the second connecting column 1214 both have a central hole inside and have threaded holes at the opposite ends. The second connecting column 1214 is provided with a fastener that can be screwed into the threaded hole and realizes a detachable connection between the first connecting column 1113 and the second connecting column 1214 through a threaded connection.

[0090] In other embodiments, a fastener that can be screwed into a threaded hole may also be disposed inside the first connecting column 1113 .

[0091] In other embodiments, the first connecting column 1113 and the second connecting column 1214 may also be detachably connected by means of a buckle, a latch, or the like.

[0092] See also Figure 1 and Figure 5 In some embodiments, the battery module 20 includes a layer of battery cells 21 , and two ends of the battery cells 21 are respectively inserted into the first positioning portion 1112 and the second positioning portion 1213 .

[0093] In this way, the battery module 20 of the single-layer battery core 21 can be fixed by the first positioning portion 1112 and the second positioning portion 1213, and the battery bracket is completely eliminated, which is beneficial to reducing production costs and assembly difficulty.

[0094] Specifically, one end of the battery cell 21 is inserted into the first positioning groove 11121 of the first positioning portion 1112 , and the other end is arranged in the second positioning groove 12131 of the second positioning portion 1213 . The cooperation between the first positioning groove 11121 and the second positioning groove 12131 realizes the fixation of the battery cell 21 .

[0095] In some embodiments, the battery cell 21 may be in a sheet or block shape. Accordingly, the first positioning groove 11121 and the second positioning groove 12131 should be configured as square grooves that match the battery cell 21 to ensure the stability of the battery cell 21 .

[0096] In another example, the battery cell 21 may also be cylindrical, and correspondingly, the first positioning groove 11121 and the second positioning groove 12131 should be configured as circular grooves matching the battery cell 21 to ensure the stability of the battery cell 21 .

[0097] In other examples, the battery cell 21 may also be in other shapes. Correspondingly, the first positioning groove 11121 and the second positioning groove 12131 should be configured as grooves that match the battery cell 21 to ensure stable placement of the battery cell 21. No specific limitation is made here.

[0098] See also Figure 5 In some embodiments, the battery cell 21 includes two electrodes 211 respectively located at both ends, and the battery pack 100 also includes a first electrical connector 30, which is respectively arranged on the first positioning portion 1112 and the second positioning portion 1213 to connect the same-side electrodes 211 of multiple adjacent battery cells 21.

[0099] In this way, the first electrical connector 30 is respectively disposed on the first positioning portion 1112 and the second positioning portion 1213 , which is beneficial to further improve the space utilization rate inside the battery pack 100 .

[0100] Specifically, the first electrical connector 30 can connect the positive poles and the negative poles of at least one battery cell 21 alternately in sequence, so that the positive pole and the negative pole connected to the two ends of the first electrical connector 30 are respectively the positive wiring port and the negative wiring port. That is, the first electrical connector 30 is connected in series with at least one battery cell 21, so that at least one battery cell 21 forms a high-voltage output power supply, thereby ensuring that the user's power demand is met.

[0101] Furthermore, the bottoms of the first positioning groove 11121 and the second positioning groove 12131 are both provided with through holes, and the electrodes 311 of the battery cell 21 pass through the through holes and are connected to the first electrical connector 30 .

[0102] See also Figure 6 , Fig. 9 and Fig.10 In some embodiments, the battery module 20 includes a stacked first battery module 23 and a second battery module 24. The first battery module 23 includes a first bracket 40 connected to the first shell 11 and a plurality of battery cells 21. The first bracket 40 is provided with a third positioning portion 41. Both ends of the battery cells 21 of the first battery module 23 are respectively inserted into the first positioning portion 1112 and the third positioning portion 41.

[0103] In this way, the first bracket 40 is used to assist in fixing the first battery module 23 to avoid unstable fixation due to lack of a supporting point between the stacked first battery module 23 and the second battery module 24 .

[0104] In some embodiments, the second battery module 24 includes a second bracket 50 connected to the second shell 12 and a plurality of battery cells 21 . The second bracket 50 is provided with a fourth positioning portion 51 . Both ends of the battery cells 21 of the second battery module 24 are respectively inserted into the second positioning portion 1213 and the fourth positioning portion 51 .

[0105] Specifically, in some embodiments, the first battery module 23 and the second battery module 24 each include 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 to ensure that the space occupied is minimized.

[0106] In other embodiments, the plurality of battery cells 21 may also be arranged in arrays along other directions according to actual needs.

[0107] In other embodiments, the first battery module 23 and the second battery module 24 may also be placed in other ways according to actual needs.

[0108] See also Figure 8 In some embodiments, the battery pack 100 further includes a second electrical connector 60 , which is disposed on the first bracket 40 and the second bracket 50 , respectively, to connect the electrodes 211 on the same side of the adjacent plurality of battery cells 21 .

[0109] Specifically, the second electrical connector 60 can connect the positive poles and the negative poles of at least one battery cell 21 alternately in sequence, so that the positive pole and the negative pole connected to the two ends of the second electrical connector 60 are respectively the positive wiring port and the negative wiring port. That is, the second electrical connector 60 is connected in series with at least one battery cell 21, so that at least one battery cell 21 forms a high-voltage output power supply, thereby ensuring that the user's power demand is met.

[0110] See also Figure 7 In some embodiments, the first end of the battery cell 21 is provided with two electrodes 211 .

[0111] In this way, the electrodes 211 of the two layers of battery cells 21 can be spaced apart to avoid accidental contact of the electrodes 211 of the two layers of battery cells 21 and cause a short circuit.

[0112] 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 . When arranged in an array, the electrodes 211 should be concentrated on the same side of the battery pack to facilitate connection between the battery cells 21 .

[0113] Furthermore, since the first end of the battery cell 21 of the first battery module 23 is inserted into the first positioning portion 1112 and the first end of the battery cell 21 of the second battery module 24 is inserted into the second positioning portion 1213, the electrode 211 of the battery cell 21 of the first battery module 23 is arranged opposite to the electrode 211 of the battery cell 21 of the second battery module 24.

[0114] Furthermore, since the electrodes 211 of the battery cells 21 of the first battery module 23 are arranged opposite to the electrodes 211 of the battery cells 21 of the second battery module 24, an insulating layer needs to be added between the two battery packs to avoid problems such as misconnection of the battery cells 21 between the upper and lower battery packs, causing short circuit of the battery packs.

[0115] In some embodiments, the second end of the battery cell 21 of the first battery module 23 may be inserted into the first positioning portion 1112, and the second end of the battery cell 21 of the second battery module 24 may be inserted into the second positioning portion 1213. Since the electrodes 211 are centrally arranged on the same side of the battery pack, when stacked, the electrodes 211 of the two battery packs are arranged in reverse, so there is no need to provide an insulating layer between the two battery packs, thereby reducing production costs and assembly difficulty.

[0116] In some embodiments, the battery cell 21 has two electrodes 211 , and the two electrodes 211 may also be disposed on opposite sides of the battery cell 21 . In an array, the electrodes 211 are concentrated on both sides of the battery pack to facilitate connection between the battery cells 21 .

[0117] Furthermore, since the electrodes 211 are concentrated on both sides of the battery pack, when the two battery packs are stacked in the vertical direction, an insulating layer needs to be added between the two battery packs to avoid the battery cells 21 between the upper and lower battery packs from being mistakenly connected, causing problems such as short circuit of the battery pack.

[0118] See also Figure 6 In some embodiments, the battery module 20 further includes a connector 22 , and the connector 22 is used to connect the first battery module 23 and the second battery module 24 .

[0119] In this way, the connector 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 helping to reduce the difficulty of assembling the battery pack 100 .

[0120] Specifically, the connector 22 is a sheet metal part. Sheet metal parts refer to metal products processed by a specific sheet metal process. This process is mainly for metal sheets (usually less than 6 mm), including a series of comprehensive cold processing processes, such as shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming, etc. The notable feature of sheet metal parts is that the thickness of the same part remains consistent. Sheet metal parts have the characteristics of light weight, high strength, good conductivity (can be used for electromagnetic shielding), low cost and suitable for large-scale mass production.

[0121] In this way, the sheet metal parts usually have higher tensile strength and compressive strength, which is beneficial to improving the service life of the connecting part 22, and the sheet metal parts have high processing efficiency, which is beneficial to shortening the processing cycle.

[0122] In the embodiment of the present application, the connecting member 22 is formed by shearing and bending, and burrs that may appear during the processing are removed, and the sharp corners of the connecting member 22 are chamfered to prevent the connecting member 22 from injuring the operator's hands during assembly or maintenance.

[0123] In other embodiments, the connecting member 22 may also be formed by other sheet metal processing techniques, such as one-step stamping. The specific sheet metal processing technique may be selected according to actual needs and is not limited here.

[0124] In certain embodiments, the connector 22 is made of galvanized sheet metal.

[0125] In this way, the galvanized sheet has relatively high strength and durability, which is beneficial to improving the service life of the connecting piece 22.

[0126] Specifically, galvanized steel sheet refers to a steel sheet coated with a layer of metallic zinc on the surface in order to prevent the surface of the steel sheet from corrosion and extend its service life.

[0127] In the embodiment of the present application, the connector 22 is made of galvanized sheet by sheet metal processing. 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 and free of oil stains, rust and impurities. These impurities may affect the processing accuracy and product quality. In addition, it is also necessary to check whether the galvanized layer is uniform and has no peeling phenomenon. Uneven galvanized layer may affect the anti-corrosion performance and appearance of the product.

[0128] When galvanized sheet metal is processed, the knife marks produced during the punching process should meet safety requirements (not scratching hands) and part size tolerances, and are generally no more than 10% to 20% of the sheet thickness. The depth of the knife marks produced during the bending process should be controlled within 0.3mm.

[0129] In other embodiments, the connecting member 22 may also be made of other metal materials through sheet metal processing. The specific metal material can be selected according to actual needs and is not limited here.

[0130] In other embodiments, the connecting member 22 may also be made of non-metallic material that meets the strength standards. The specific material may be selected according to actual needs and is not limited here.

[0131] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0133] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A housing, the housing comprising a first housing and a second housing, the first housing being detachably connected to the second housing, the first housing comprising a first inner wall opposite to the second housing and provided with a first positioning portion on the first inner wall, the second housing comprising a second inner wall opposite to the first housing and provided with a second positioning portion on the second inner wall; A battery module, wherein two ends of the battery module are respectively inserted into the first positioning portion and the second positioning portion.

2. The battery pack according to claim 1, characterized in that: 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.

3. The battery pack according to claim 1, characterized in that: The first positioning portion includes a plurality of first positioning grooves, and the second positioning portion includes second positioning grooves respectively corresponding to the plurality of first positioning grooves.

4. The battery pack according to claim 1, characterized in that: The first shell includes a plurality of first connecting columns, and the second shell includes a plurality of second connecting columns. When the first shell is connected to the second shell, the first connecting columns are connected to the second connecting columns.

5. The battery pack according to claim 1, characterized in that: The battery module includes a layer of battery cells, and two ends of the battery cells are respectively inserted into the first positioning portion and the second positioning portion.

6. The battery pack according to claim 5, characterized in that: The battery cell includes two electrodes located at both ends respectively, and the battery pack also includes a first electrical connector, which is arranged on the first positioning portion and the second positioning portion to connect the electrodes on the same side of the adjacent plurality of battery cells.

7. The battery pack according to claim 1, characterized in that: The battery module includes a first battery module and a second battery module stacked together. The first battery module includes a first bracket connected to a first shell and a plurality of battery cells. The first bracket is provided with a third positioning portion. Both ends of the battery cells of the first battery module are respectively inserted into the first positioning portion and the third positioning portion.

8. The battery pack according to claim 7, characterized in that: The second battery module includes a second bracket connected to the second shell and a plurality of the battery cells. The second bracket is provided with a fourth positioning portion. Both ends of the battery cells of the second battery module are respectively inserted into the second positioning portion and the fourth positioning portion.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes a second electrical connector, which is disposed on the first bracket and the second bracket respectively to connect electrodes on the same side of a plurality of adjacent battery cells.

10. The battery pack according to claim 9, characterized in that: The first end of the battery cell is provided with two electrodes.

11. The battery pack according to claim 8, characterized in that: It also includes a connecting member, which is used to connect the first battery module and the second battery module.

12. An energy storage power supply, characterized in that: A battery pack comprising any one of claims 1-11.

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