Battery pack and energy storage power supply

Abstract

The utility model provides a battery pack and an energy storage power supply. The battery pack includes: a frame having a first surface and a second surface; a battery cell; the circuit board is arranged on the second surface; the circuit board is provided with an acquisition module and a BMS module; the plurality of conductive pieces are arranged on one side, close to the first surface, of the circuit board; a plurality of busbars; the busbar comprises a main body part and through-flow parts, each through-flow part in the plurality of through-flow parts is in contact with each conductive piece in the plurality of conductive pieces to form a combined unit, and the combined units are arranged and connected in a column shape in the first direction. The plurality of through-flow parts form a column and are respectively connected to one side of the circuit board, and the plurality of busbars do not need to be respectively connected with different circuit boards in different directions of the frame body, so that the production process is simplified, the production efficiency is improved, the integration degree of products is higher, and the number of parts and the material cost are better saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage devices, and in particular to a battery pack and an energy storage power supply. BACKGROUND

[0002] The battery pack is one of the important components of the energy storage power supply, and generally comprises a frame, battery cells, busbars, a collection board and a BMS (Battery management system) board. The battery cells are arranged in the frame, the collection board is arranged on one side of the frame, and the BMS board is arranged on the other side of the frame. The battery cells, the collection board and the BMS board are connected by the busbars. However, in the production process of the battery pack, the busbars need to be welded with the battery cells, the collection board and the BMS board respectively, which is complex and affects the production efficiency. CONTENT OF THE UTILITY MODEL

[0003] In view of the above, it is necessary to provide a battery pack and an energy storage power supply to solve the above technical problems.

[0004] The first aspect of the present application provides a battery pack, comprising: a frame having a first side and a second side; a battery cell arranged in the frame, with the positive and / or negative electrode of the battery cell facing the first side; a circuit board arranged on the second side; the circuit board having a collection module and a BMS module; a plurality of conductive parts arranged on one side of the circuit board close to the first side, the plurality of conductive parts being spaced apart along a first direction; and a plurality of busbars spaced apart along the first direction; wherein each busbar comprises a main body and a through-flow part, the main body is arranged on the first side and connected to the power connection end of the battery cell; the through-flow part is located at one end of the main body close to the second side, each of the plurality of through-flow parts is in contact with each of the plurality of conductive parts and forms a combined unit, and each combined unit is arranged in a column along the first direction.

[0005] In some embodiments, the main body is arranged in extension along a second direction, and the through-flow part is arranged in extension along a third direction; wherein the second direction is parallel to the first side, the third direction is parallel to the second side, and the first direction, the second direction and the third direction have an included angle with each other.

[0006] In some embodiments, the one side of the circuit board close to the first side is provided with a plurality of accommodation openings, and the plurality of conductive parts are arranged in the plurality of accommodation openings respectively; the through-flow part extends into the accommodation opening along the third direction and abuts against the conductive part.

[0007] In some embodiments, the conductive part comprises a butt joint part and a plurality of fixing parts, the butt joint part is arranged between the plurality of fixing parts; the butt joint part is located in the accommodation opening and connected to the through-flow part; and at least one of the plurality of fixing parts is fixedly connected to the circuit board.

[0008] In some embodiments, the frame body is provided with a fixing member, and the main body part is provided with a fixing hole, and the fixing member fixes the main body part through the fixing hole.

[0009] In some embodiments, the frame body is further provided with a positioning column, and the main body part is provided with a positioning hole, and the positioning column positions the main body part through the positioning hole.

[0010] In some embodiments, the fixing holes are distributed at two ends of the main body part, and the positioning holes are distributed at a middle part of the main body part.

[0011] In some embodiments, the fixing member is snap-fitted with the fixing hole.

[0012] In some embodiments, the frame body is provided with a communication port, and the power connection end of the battery cell is exposed to the first surface through the communication port; the main body part is protruded in a direction close to the first surface to form a slot part, the slot part is embedded in the communication port and connected with the power connection end of the battery cell, and a raised spacing is formed between the main body part and the first surface.

[0013] In some embodiments, the battery cells are multiple, and the multiple battery cells form N columns in a first direction and M rows in a second direction; N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 2; the multiple battery cells in the same column can be connected with the same main body part; each battery cell in the first row is connected with one end of the adjacent two main body parts, and each battery cell in the Mth row is connected with the other end of the adjacent two main body parts.

[0014] The second aspect of the present application provides a battery pack.

[0015] Through the battery pack and the energy storage power supply provided by the present application, the acquisition module and the BMS module are integrated on the same circuit board and arranged on the second surface of the frame body. In the production process of the battery pack, the multiple bus bars can be integrally arranged on the first surface of the frame body, the multiple main body parts are connected with the battery cells respectively, the multiple through-flow parts are connected with the multiple conductive members respectively and form multiple combination units, and the multiple combination units are connected with the circuit board to establish the connection between the acquisition module, the BMS module, the battery cells and the bus bars. In this way, the multiple through-flow parts are arranged on one side of the circuit board in one column, and the multiple bus bars do not need to be connected with different circuit boards in different directions of the frame body, which simplifies the production process and improves the production efficiency. Moreover, the integration degree of the product is higher, and the number of parts and the material cost are preferably saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the battery pack in the embodiments of the present application.

[0017] Figure 2 It is an exploded view of the battery pack in the embodiments of the present application.

[0018] Figure 3 Fig. 1 is a schematic view of a battery pack according to an embodiment of the present application. Figure 2 Fig. 2 is a partial enlarged view of the portion III in Fig. 1.

[0019] Figure 4 Fig. 3 is a schematic view of the structure of a busbar in the embodiment of the present application.

[0020] Figure 5 Fig. 4 is a schematic view of the structure of a frame in the embodiment of the present application. Figure 1 Fig. 5 is a partial enlarged view of the portion V in Fig. 4.

[0021] Figure 6 Fig. 6 is a schematic view of the structure of a first support of the frame in the embodiment of the present application.

[0022] Figure 7 Fig. 7 is a schematic view of the layout of a plurality of battery cells provided in the present application.

[0023] Figure 8 Fig. 8 is a schematic view of the structure of a second support of the frame in the embodiment of the present application. Figure 6 Fig. 9 is a partial enlarged view of the portion VIII in Fig. 8.

[0024] Figure 9 Fig. 10 is a schematic view of the connection relationship between two adjacent main bodies and the battery cells in the present application.

[0025] Figure 10 Fig. 11 is a schematic view of the connection state between the busbar, the frame and the battery cell with longer length in the present application.

[0026] Figure 11 Fig. 12 is a schematic view of the connection state between the busbar, the frame and the battery cell with shorter length in the present application.

[0027] Figure 12 Fig. 13 is a schematic view of the structure of a circuit board provided in the present application.

[0028] Figure 13 Fig. 14 is a schematic view of the structure of a conductive member provided in the present application.

[0029] Figure 14 Fig. 15 is a schematic view of the structure of an energy storage power supply in the embodiment of the present application.

[0030] Main element symbol explanation

[0031] 10, frame; 11, first surface; 111, communication port; 12, second surface; 13, positioning column; 14, partition; 15, positioning convex strip; 20, electric core; 21, electricity connection end; 22, positive electrode; 23, negative electrode; 30, circuit board; 31, accommodation port; 32, insertion hole; 33, first electricity connection seat; 34, second electricity connection seat; 35, positioning groove; 40, conductive piece; 41, butt joint part; 411, groove; 42, fixing part; 421, insertion block; 50, busbar; 51, main body part; 511, fixing hole; 513, positioning hole; 52, through-flow part; 53, embedding groove part; 60, fixing piece; 61, clamping convex edge; 62, accommodation groove; 70, total positive electrode conductive row; 80, total negative electrode conductive row; 100, battery pack; 200, energy storage power supply; 201, shell. DETAILED DESCRIPTION

[0032] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified. And / or", the association relationship of the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural.

[0033] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or a middle element can exist at the same time. When an element is considered to be "provided on" another element, it can be directly provided on the other element or a middle element can exist at the same time. In the present application, unless otherwise specified and limited, the terms "fixed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through a middle medium; it can be the communication inside 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.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application. The terms "include" and "have" and any variations of them in the specification and claims of the present application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] In related technologies, a battery pack typically includes a frame, battery cells, busbars, a data acquisition board, and a BMS (Battery Management System) board. The battery cells are housed within the frame, with their terminals facing one side of the frame. The data acquisition board is located on the side of the frame near the battery cell terminals, and the BMS board is located on the top surface of the frame. Busbars are positioned between the battery cells, the data acquisition board, and the BMS board, establishing a connection.

[0037] In the production process of battery packs, it is necessary not only to weld the busbar to the power terminal of the cell and to set part of the busbar on one side of the frame and weld it to the acquisition board, but also to set another part of the busbar on the top of the frame and weld it to the acquisition board. The number of parts is large and the process is relatively complex, which affects production efficiency and material costs.

[0038] On the other hand, the battery cell's power connection terminal is equipped with an explosion-proof valve, and the data acquisition board is located close to this valve. When the explosion-proof valve is triggered, it may cause a short circuit on the data acquisition board, or even a short circuit in the entire battery pack, indicating a need for improved safety.

[0039] Therefore, this application provides a battery pack and an energy storage power supply.

[0040] This application first provides a battery pack.

[0041] Figure 1 This is a schematic diagram of the battery pack structure in an embodiment of this application. Figure 2 This is an exploded view of the battery pack in an embodiment of this application.

[0042] like Figure 1 and Figure 2 As shown, the battery pack 100 includes a frame 10, battery cells 20, a circuit board 30, multiple conductive components 40, and multiple busbars 50. The frame 10 has a first surface 11 and a second surface 12, which are located in different orientations. For example, the first surface 11 and the second surface 12 are located on two adjacent surfaces of the frame 10, with the first surface 11 located on one side of the frame 10 and the second surface 12 located on the top of the frame 10.

[0043] Figure 3 for Figure 2A local enlarged view of the portion III.

[0044] As shown in Figure 2 and Figure 3 , the battery cell 20 has a plurality of, and each of the battery cell 20 is arranged in the frame 10. The positive electrode 22 and / or the negative electrode 23 of the battery cell 20 is arranged towards the first surface 11. The end of the battery cell 20 towards the first surface 11 is defined as the electrical connection end 21, and the electrical connection end 21 is provided with an explosion-proof valve.

[0045] As shown in Figure 1 and Figure 3 , the circuit board 30 is arranged on the second surface 12. The circuit board 30 has a collection module and a BMS module. Exemplarily, the collection module and the BMS module are integrated on the circuit board 30, the collection module is used to collect various data of the battery cell 20 such as temperature, voltage, etc. through the busbar 50, and the BMS module is used to receive the collected data and manage and monitor the state of the battery pack 100.

[0046] Figure 4 It is a structural schematic diagram of the busbar in the embodiment of the present application. Figure 5 It is Figure 1 a local enlarged view of the portion V.

[0047] As shown in Figure 2 , Figure 4 and Figure 5 , a plurality of conductive members 40 are arranged on the side of the circuit board 30 close to the first surface 11, the plurality of conductive members 40 are distributed along the first direction, and the plurality of conductive members 40 are used to connect with the plurality of busbars 50. In the example of the present application, the first direction is the X-axis direction in the drawing.

[0048] The plurality of busbars 50 are distributed along the first direction. Each busbar 50 includes a main body 51 and a through-flow portion 52, wherein the main body 51 is arranged on the first surface 11 and connected with the electrical connection end 21 of the battery cell 20. The through-flow portion 52 is located at the end of the main body 51 close to the second surface 12, and the plurality of busbars 50 are respectively connected with the plurality of conductive members 40 through the corresponding through-flow portions 52. Specifically, each of the plurality of through-flow portions 52 is in contact with each of the plurality of conductive members 40 and constitutes a combined unit, and each combined unit is arranged in a column along the first direction.

[0049] The battery pack 100 provided by the present application is that the acquisition module and the BMS module are integrated on the same circuit board 30 and arranged on the second surface 12 of the frame body 10. In the production process of the battery pack 100, the plurality of busbars 50 can be integrally arranged on the first surface 11 of the frame body 10, the plurality of main body parts 51 are connected with the battery cells 20 respectively, the plurality of through-flow parts 52 are connected with the plurality of conductive parts 40 respectively and form a plurality of combined units, and the plurality of combined units are connected with the circuit board 30 to establish the connection between the acquisition module, the BMS module, the battery cells 20 and the busbars 50. In this way, the plurality of through-flow parts 52 are arranged in a row on one side of the circuit board 30, and the plurality of busbars 50 do not need to be connected with different circuit boards 30 on different positions of the frame body 10, which simplifies the production process and improves the production efficiency. Moreover, the integration degree of the product is higher, and the number of parts and the material cost are preferably saved.

[0050] On the other hand, by arranging the circuit board 30 on the second surface 12, the acquisition module can be away from the explosion-proof valve, the risk of short circuit of the acquisition plate and even the whole battery pack 100 caused by the triggering of the explosion-proof valve can be reduced, and the safety can be improved.

[0051] Figure 6 The structure diagram of the first support of the frame body in the embodiments of the present application.

[0052] As shown in Figure 2 and Figure 6 , in some embodiments, the frame body 10 is in the shape of a cuboid as a whole. For example, the length direction of the frame body 10 is parallel to the first direction, the width direction of the frame body 10 is the Y-axis direction in the drawing, and the height direction of the frame body 10 is the Z-axis direction in the drawing.

[0053] The frame body 10 includes a first support and a second support, both of which are made of insulating materials such as plastic, and the first support and the second support are combined to form the frame body 10 along the width direction of the frame body 10. The side of the first support away from the second support forms the first surface 11, and the top surface of the first support and the top surface of the second support together form the second surface 12. The first support and the second support form a receiving space therebetween, and the battery cells 20 are fixed between the first support and the second support.

[0054] In some embodiments, the frame body 10 is provided with a communication port 111. For example, the side of the first support away from the second support is provided with the communication port 111, and the communication port 111 penetrates the first support. The communication port 111 is arranged corresponding to the battery cells 20, and the number and distribution of the communication ports 111 are configured according to the battery cells 20.

[0055] As shown in Figure 2 and Figure 3As shown in FIG. 1, in some embodiments, the plurality of battery cells 20 are cylindrical, and the axial direction of the battery cells 20 is parallel to the width direction of the frame 10. One end of the battery cell 20 facing the first face 11 is an electrical connection end 21. The electrical connection end 21 of the battery cell 20 is exposed to the first face 11 through the communication port 111, so that the battery cell 20 is connected to the busbar 50.

[0056] Figure 7 The layout schematic diagram of the plurality of battery cells provided in the present application.

[0057] As shown in FIG. 1, in some embodiments, the plurality of battery cells 20 are cylindrical, and the axial direction of the battery cells 20 is parallel to the width direction of the frame 10. One end of the battery cell 20 facing the first face 11 is an electrical connection end 21. The electrical connection end 21 of the battery cell 20 is exposed to the first face 11 through the communication port 111, so that the battery cell 20 is connected to the busbar 50. Figure 2 and Figure 7 As shown in FIG. 1, in some embodiments, the plurality of battery cells 20 are arranged in an array, i.e., the plurality of battery cells 20 can form a plurality of rows and a plurality of columns. For example, the plurality of battery cells 20 form N columns along a first direction, and the plurality of battery cells 20 form M rows along a second direction. N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 2. The second direction is parallel to the length direction of the main body 51 of the busbar 50 and parallel to the first face 11. In the example of the present application, the second direction has an included angle with the height direction of the frame 10, and the second direction is the Z' axis direction in the figure; in other embodiments, the second direction can also be consistent with the height direction of the frame 10.

[0058] As shown in FIG. 1, in some embodiments, the plurality of battery cells 20 are cylindrical, and the axial direction of the battery cells 20 is parallel to the width direction of the frame 10. One end of the battery cell 20 facing the first face 11 is an electrical connection end 21. The electrical connection end 21 of the battery cell 20 is exposed to the first face 11 through the communication port 111, so that the battery cell 20 is connected to the busbar 50. Figure 2 and Figure 4 As shown in FIG. 1, in some embodiments, the busbar 50 is made of a conductive material such as copper, and the main body 51 and the through-flow part 52 are integrally formed. The main body 51 extends along the second direction, and the through-flow part 52 extends along a third direction. For example, the through-flow part 52 can be formed by bending the end of the main body 51. In this way, the main body 51 can be connected to the plurality of battery cells 20 in the same column, and the through-flow part 52 can extend into the second face 12 and be connected to the conductive part 40.

[0059] The third direction is parallel to the second face 12, and the first direction, the second direction, and the third direction have included angles with each other. For example, the third direction is the Y axis direction in the figure.

[0060] It is worth noting that the structure described in the present application extends along a certain direction, which can be parallel to the direction along the overall length direction of the structure, or can be parallel to the direction along the length direction of the structure. For example, in the case where the through-flow part 52 extends along the third direction, the through-flow part 52 can be parallel to the third direction; for another example, in the case where the main body 51 extends along the second direction, the overall main body 51 can extend along the second direction, and part of the main body 51 can extend and bend along a direction different from the second direction, which is not limited in the present application.

[0061] Figure 8 For Figure 6A partial enlarged view at VIII.

[0062] As shown in Figure 4 and Figure 8 In some embodiments, the frame 10 is provided with a fixing member 60, and the main body 51 is provided with a fixing hole 511. The fixing member 60 is fixed to the main body 51 through the fixing hole 511. In this way, the main body 51 can be directly fixed to the frame 10 through the cooperation of the fixing hole 511 and the fixing member 60, so as to realize the quick fixing of the main body 51 and improve the assembly efficiency of the busbar 50.

[0063] In some embodiments, the fixing member 60 is snap-fitted with the fixing hole 511. For example, the fixing member 60 adopts a snap structure. The fixing member 60 protrudes from the first face 11 of the frame 10 along the third direction. One end of the fixing member 60 is fixed to the frame 10. The other end of the fixing member 60 is provided with a clamping protrusion 61. The middle part of the fixing member 60 is provided with a displacement slot 62. The fixing member 60 is arranged in the fixing hole 511. The clamping protrusion 61 abuts against one face of the main body 51 away from the frame 10, so as to fix the main body 51 to the frame 10.

[0064] When it is needed to fix the main body 51 to the frame 10, the end of the fixing member 60 away from the frame 10 can be inserted into the fixing hole 511 first, so that the clamping protrusion 61 abuts against one face of the main body 51. Then, the main body 51 is pressed towards the frame 10, so that the clamping protrusion 61 passes through the fixing hole 511 and abuts against the other face of the main body 51, thereby realizing the snap-fitting of the main body 51.

[0065] As shown in Figure 2 and Figure 4 In the production process, the main body 51 can be fixed to the frame 10 first, and then the main body 51 and the battery cell 20 are laser-welded, so as to prevent the misalignment of the main body 51 and the battery cell 20 and improve the welding effect and welding quality.

[0066] It is worth noting that the fixing member 60 in the embodiment adopts a snap structure to fix the main body 51. In other embodiments, the fixing member 60 can also adopt a bolt structure, an interference fit structure, a bolt structure, etc., which can only achieve the effect of quickly fixing the main body 51. The present application does not limit this.

[0067] In some embodiments, the two ends of the main body 51 are provided with fixing holes 511. Correspondingly, the frame 10 is provided with a plurality of fixing members 60, and the plurality of fixing members 60 are distributed corresponding to the positions of the plurality of fixing holes 511. In this way, the frame 10 can position the two ends of the main body 51 through the plurality of fixing members 60, so as to improve the connection stability between the main body 51 and the frame 10.

[0068] As shown in Figure 4 and Figure 6As shown, in some embodiments, the frame body 10 is provided with a positioning column 13, and the main body part 51 is provided with a positioning hole 513, and the positioning column 13 is positioned to the main body part 51 through the positioning hole 513. For example, the positioning column 13 protrudes from the first surface 11 of the frame body 10 along the third direction, and the positioning column 13 is inserted into the positioning hole 513 along the second direction to position the main body part 51. In this way, the positioning column 13 can prevent the main body part 51 from deviating from the frame body 10, and improve the alignment of the main body part 51 and the battery cell 20.

[0069] In some embodiments, the main body part 51 is provided with a plurality of positioning holes 513, and the plurality of positioning holes 513 are distributed along the second direction. Correspondingly, the frame body 10 is provided with a plurality of positioning columns 13, and the plurality of positioning columns 13 correspond to the position distribution of the plurality of positioning holes 513. In this way, the plurality of positioning columns 13 can be inserted into the corresponding plurality of positioning holes 513 respectively, and the positioning effect is improved.

[0070] In some embodiments, the frame body 10 is provided with a plurality of dismounting holes (not shown in the figure), and the positioning column 13 is detachably mounted in the dismounting hole. The positioning column 13 can be detached or mounted in different dismounting holes to change the position of the positioning column 13. In this way, the position or number of the positioning column 13 can be configured according to the position or number of the positioning hole 513 of the main body part 51, so that the positioning column 13 can meet the positioning requirements of the main body part 51 with different shapes, and the applicability of the positioning structure is improved.

[0071] In some embodiments, the fixing holes 511 are distributed at both ends of the main body part 51, and the positioning holes 513 are distributed in the middle part of the main body part 51. In this way, the middle part of the main body part 51 is positioned in the frame body 10, and the both ends of the main body part 51 are fixed to the frame body 10, realizing the overall fixation of the main body part 51, preventing the overall position deviation of the main body part 51, and improving the connection stability between the whole main body part 51 and the battery cell 20.

[0072] In some embodiments, the first surface 11 of the frame body 10 is provided with a plurality of partitions 14, and the plurality of partitions 14 are distributed along the first direction, and the adjacent two partitions 14 form a receiving space, and the main body part 51 is arranged in the receiving space. In this way, the plurality of partitions 14 can separate the adjacent two main body parts 51 to prevent direct contact between the adjacent two main body parts 51.

[0073] In some embodiments, the partition 14 at least partially abuts against the adjacent main body part 51 to limit the main body part 51, which can prevent the main body part 51 from deviating from the frame body 10, and improve the alignment of the main body part 51 and the battery cell 20.

[0074] As Figure 3 and Figure 4As shown in some embodiments, the main body part 51 is protruded with a groove part 53 in a direction close to the first surface 11, and the groove part 53 is embedded into the communication port 111 and connected with the electric contact end 21 of the battery cell 20.

[0075] For example, the position of the groove part 53 corresponds to the position of the communication port 111, so that the groove part 53 can be embedded into the communication port 111 to contact the positive pole 22 or the negative pole 23 of the battery cell 20 and be connected by laser welding.

[0076] Figure 9 The connection relationship between the adjacent two main body parts of the present application and the battery cell is shown in the schematic diagram.

[0077] As shown in some embodiments, the groove part 53 includes a groove part 53A and a groove part 53B, the groove part 53A is used to connect the positive pole 22 of the battery cell 20, and the groove part 53B is used to connect the negative pole 23 of the battery cell 20. Figure 1 , Figure 3 and Figure 9 The sum of the area of the groove part 53A and the area of the groove part 53B is less than the area of the communication port 111, so that the groove part 53A and the groove part 53B can be embedded into the communication port 111 at the same time and respectively contact the positive pole 22 and the negative pole 23 of the same battery cell 20.

[0078] It can be understood that the number, position and shape of the groove part 53A and the groove part 53B of different main body parts 51 can be adjusted, so that the plurality of busbars 50 can not adopt a unique shape, for example, the main body part 51A can be provided with two groove parts 53A and two groove parts 53B from top to bottom, and the main body part 51B can be provided with two groove parts 53B and two groove parts 53A from top to bottom, which can be configured according to the positive pole 22 or the negative pole 23 of the battery cell 20, and the present application does not limit this.

[0079] Figure 10 The connection state between the busbar, the frame and the battery cell with a relatively long length of the present application is shown in the schematic diagram. Figure 11 The connection state between the busbar, the frame and the battery cell with a relatively short length of the present application is shown in the schematic diagram.

[0080] As shown in some embodiments, the groove part 53 includes a groove part 53A and a groove part 53B, the groove part 53A is used to connect the positive pole 22 of the battery cell 20, and the groove part 53B is used to connect the negative pole 23 of the battery cell 20. Figure 3 , Figure 10 and Figure 11As shown in some embodiments, the embedding groove 53 is connected with the electrical connection end 21 of the battery cell 20, so that the main body 51 and the first surface 11 form a raised distance T. Specifically, the first distance is formed between the inner side of the frame 10 and the first surface 11, and the second distance is formed between the side of the embedding groove 53 facing the electrical connection end 21 of the battery cell 20 and the side of the main body 51 facing the frame 10, and the second distance is greater than or equal to the first distance. In this way, when the embedding groove 53 contacts the electrical connection end 21 of the battery cell 20, the embedding groove 53 can raise the main body 51, so that the main body 51 is suspended relative to the first surface 11 and forms the raised distance T.

[0081] It can be understood that when the battery cell 20 is fixed to the frame 10, the electrical connection end 21 of the battery cell 20 and the first surface 11 form a third distance, and the third distance is greater than or equal to the first distance. Different lengths of different battery cells 20 have a certain tolerance, which causes the third distance formed after the different battery cells 20 are installed in the frame 10 to be different. For example, when the length of the battery cell 20 is relatively long, the electrical connection end 21 of the battery cell 20 is attached to the inner side of the frame 10, and the third distance is equal to the first distance, and when the length of the battery cell 20 is relatively short, there can be a gap between the electrical connection end 21 of the battery cell 20 and the inner side of the frame 10, and the third distance is greater than the first distance.

[0082] By forming the raised distance T between the main body 51 and the first surface 11, the raised distance can compensate for the tolerance between different battery cells 20. For example, when the length of the battery cell 20 is relatively long, the embedding groove 53 can contact the electrical connection end 21 of the battery cell 20 and make the main body 51 suspended at a relatively high height relative to the first surface 11; when the length of the battery cell 20 is relatively short, the embedding groove 53 can still contact the electrical connection end 21 of the battery cell 20 and make the main body 51 suspended at a relatively small height relative to the first surface 11, or even make the main body 51 attached to the first surface 11. In this way, the main body 51 can overcome the tolerance and different lengths of the battery cells 20 can all be in good contact, reducing material waste and improving the stability of the electrical connection between the bus bar 50 and the battery cell 20.

[0083] As shown in some embodiments, the embedding groove 53 is connected with the electrical connection end 21 of the battery cell 20, so that the main body 51 and the first surface 11 form a raised distance T. Specifically, the first distance is formed between the inner side of the frame 10 and the first surface 11, and the second distance is formed between the side of the embedding groove 53 facing the electrical connection end 21 of the battery cell 20 and the side of the main body 51 facing the frame 10, and the second distance is greater than or equal to the first distance. In this way, when the embedding groove 53 contacts the electrical connection end 21 of the battery cell 20, the embedding groove 53 can raise the main body 51, so that the main body 51 is suspended relative to the first surface 11 and forms the raised distance T. Figure 1 , Figure 3 and Figure 9 As shown in some embodiments, the embedding groove 53 is connected with the electrical connection end 21 of the battery cell 20, so that the main body 51 and the first surface 11 form a raised distance T. Specifically, the first distance is formed between the inner side of the frame 10 and the first surface 11, and the second distance is formed between the side of the embedding groove 53 facing the electrical connection end 21 of the battery cell 20 and the side of the main body 51 facing the frame 10, and the second distance is greater than or equal to the first distance. In this way, when the embedding groove 53 contacts the electrical connection end 21 of the battery cell 20, the embedding groove 53 can raise the main body 51, so that the main body 51 is suspended relative to the first surface 11 and forms the raised distance T.

[0084] Each cell 20 in the first row is connected to one end of two adjacent main body portions 51, and each cell 20 in the Mth row is connected to the other end of two adjacent main body portions 51. When two adjacent main body portions 51 are connected to the same cell 20, the slot portion 53A of one main body portion 51 is connected to the positive electrode 22 of the cell 20, and the slot portion 53B of the other main body portion 51 is connected to the negative electrode 23 of the cell 20.

[0085] It is understood that multiple cells 20 located in the same column can be connected to the same main body 51 so that the overcurrent between the multiple cells 20 can form a column current path; each cell 20 located in the first row is connected to one end of two adjacent main bodies 51, and each cell 20 located in the Mth row is connected to the other end of two adjacent main bodies 51 so that a row current path is formed between two adjacent column current paths, and multiple column current paths are adjacent to each other through the row current path.

[0086] In this way, the current-carrying paths of all cells 20 can form an S-shaped path (such as...). Figure 7 (as shown by the dashed path in the diagram) so that the overcurrent can pass through each cell 20 from top to bottom, making the heat distribution of the cell 20 more uniform and improving the working stability.

[0087] Figure 12 This is a schematic diagram of the circuit board provided in this application.

[0088] like Figure 2 , Figure 4 and Figure 12 As shown, in some embodiments, a plurality of clearance openings 31 are provided on the side of the circuit board 30 near the first surface 11, and a plurality of conductive elements 40 are respectively disposed in the plurality of clearance openings 31. The flow passage 52 extends into the clearance opening 31 in a third direction and abuts against the conductive element 40. Exemplarily, the clearance opening 31 penetrates both sides of the circuit board 30 along the thickness direction of the circuit board 30.

[0089] It is understood that when the main body 51 is fixed to the first surface 11, the main body 51 can be moved along the third direction. During this process, multiple flow passages 52 extend into the corresponding relief openings 31 along the third direction and abut against the top surface of the conductive member 40 along the thickness direction of the circuit board 30, thereby improving assembly efficiency and enabling the flow passages 52 to make stable contact with the conductive member 40.

[0090] In some embodiments, the second surface 12 of the frame 10 is provided with a plurality of positioning protrusions 15, which are spaced apart along a first direction. The circuit board 30 is provided with a plurality of positioning grooves 35, which respectively engage with the plurality of positioning protrusions 15 to position the circuit board 30, thereby improving the installation stability of the circuit board 30 and preventing misalignment between the circuit board 30 and the frame 10.

[0091] Figure 13 The structure of the conductive member provided in the present application is shown in the schematic view.

[0092] As shown in Figure 12 and Figure 13 , in some embodiments, the conductive member 40 comprises a docking portion 41 and a plurality of fixing portions 42. The docking portion 41 is arranged between the plurality of fixing portions 42. The docking portion 41 is located in the accommodation opening 31 and connected with the through-flow portion 52. At least one of the plurality of fixing portions 42 is fixedly connected with the circuit board 30. One side of the fixing portion 42 is provided with a plug 421, and the circuit board 30 is provided with a socket 32. When the fixing portion 42 is overlapped on the circuit board 30, the fixing portion 42 can be plugged into the socket 32 through the plug 421, so that the conductive member 40 is positioned on the circuit board 30.

[0093] As shown in Figure 4 and Figure 13 , for example, the conductive member 40 is made of conductive material such as aluminum, and the docking portion 41 and the fixing portion 42 are integrally formed. The plurality of fixing portions 42 are distributed at both ends of the docking portion 41, and the docking portion 41 is bent between the fixing portions 42, so that one side of the docking portion 41 is formed with a groove 411. The through-flow portion 52 can be accommodated in the groove 411 and abut against the docking portion 41.

[0094] In the examples of the present application, the fixing portion 42 can be overlapped on the circuit board 30, i.e. the fixing portion 42 is placed on the surface of the circuit board 30. The fixing portion 42 can also be welded with the circuit board 30. When all the fixing portions 42 of the conductive member 40 are welded with the circuit board 30, the conductive member 40 is completely fixed and electrically connected with the circuit board 30. When the fixing portion 42 at one end of the conductive member 40 is welded with the circuit board 30 and the fixing portion 42 at the other end is not welded with the circuit board 30, one end of the conductive member 40 is fixed and electrically connected with the circuit board 30, and the other end of the conductive member 40 can be loose from the circuit board 30, so as to allow adjustment of the connection position of the docking portion 41 and the through-flow portion 52.

[0095] As shown in Figure 2 , Figure 4 , Figure 12 and Figure 13As shown in the example of this application, the assembly process of the battery pack 100 can be as follows: First, multiple battery cells 20 are fixed to the frame 10, and conductive components 40 are fixed to the circuit board 30, wherein the fixing part 42 at one end of the conductive component 40 is soldered to the circuit board 30, and the fixing part 42 at the other end is not soldered to the circuit board 30. Then, the busbar 50 is installed on the frame 10, so that the main body 51 is embedded in the first surface 11 of the frame 10 and contacts the battery cell 20, and the current-passing part 52 is inserted into the relief opening 31 and contacts the mating part 41 of the corresponding conductive component 40. Then, the main body 51 is soldered to the battery cell 20, and the current-passing part 52 is soldered to the mating part 41.

[0096] It is understandable that during the process of the current-passing part 52 being inserted into the clearance port 31 and contacting the mating part 41 of the corresponding conductive member 40, since one end of the conductive member 40 is allowed to loosen from the circuit board 30, the current-passing part 52 can still hold and press the mating part 41 even when the mating part 41 is higher than the current-passing part 52; and when the mating part 41 is lower than the current-passing part 52, the position of the mating part 41 can be raised to ensure stable contact between the mating part 41 and the current-passing part 52. This improves the electrical connection stability between the busbar 50 and the conductive member 40, and enhances the operational stability of the battery pack 100.

[0097] like Figure 2 and Figure 3 As shown, in some embodiments, the battery pack 100 further includes a total positive electrode bus 70 and a total negative electrode bus 80. The positive electrode 22 of the battery cell 20 located in the first column of the total positive electrode bus 70 can be connected to the total positive electrode bus 70, and the end of the total positive electrode bus 70 near the second surface 12 is connected to the circuit board 30. The negative electrode 23 of the battery cell 20 located in the Nth column of the total negative electrode bus 80 can be connected to the total negative electrode bus 80, and the end of the total negative electrode bus 80 near the second surface 12 is connected to the circuit board 30.

[0098] For example, the circuit board 30 is provided with a first terminal block 33 and a second terminal block 34, which are located at opposite ends of the circuit board 30. The main positive electrode bus 70 is connected to the first terminal block 33, and one end of the main negative electrode bus 80 is connected to the first terminal block 33. In this way, the connection between the main positive electrode bus 70, the main negative electrode bus 80, each busbar 50 and the circuit board 30 can be completed on the first surface 11 of the frame 10, thereby improving the production efficiency of the battery pack 100.

[0099] This application also provides an energy storage power source.

[0100] Figure 14 This is a schematic diagram of the energy storage power supply in the embodiments of this application.

[0101] like Figure 14As shown, the energy storage power supply 200 comprises the battery pack 100 and a housing 201, and the battery pack 100 is fixed in the housing 201.

[0102] The energy storage power supply 200 provided by the present application has the beneficial effects and implementation principles, which can be seen from the foregoing related descriptions in the embodiments, and the present application will not be described here again.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A battery pack, characterized by, The battery pack comprises: a frame body having a first face and a second face; a battery cell arranged in the frame body, a positive electrode and / or a negative electrode of the battery cell being arranged towards the first face; a circuit board arranged at the second face, the circuit board having a collection module and a BMS module; a plurality of conductive members arranged at a side of the circuit board close to the first face, the plurality of conductive members being spaced apart along a first direction; a plurality of busbars spaced apart along the first direction, each of the busbars comprising a main body portion and a through-flow portion, the main body portion being arranged at the first face and connected with an electrical connection end of the battery cell, the through-flow portion being located at an end of the main body portion close to the second face, each of the through-flow portions being in contact with each of the conductive members and forming a combined unit, and the combined units being arranged in a column along the first direction.

2. The battery pack of claim 1, wherein, The main body portion is arranged extending along a second direction, and the through-flow portion is arranged extending along a third direction, the second direction being parallel to the first face, the third direction being parallel to the second face, and the first direction, the second direction and the third direction having an included angle therebetween.

3. The battery pack of claim 2, wherein, The circuit board is provided with a plurality of accommodation openings at a side close to the first face, and the plurality of conductive members are arranged in the plurality of accommodation openings respectively, and the through-flow portion extends into the accommodation opening along the third direction and abuts against the conductive member.

4. The battery pack of claim 3, wherein, The conductive member comprises a butt joint portion and a plurality of fixing portions, the butt joint portion being arranged between the plurality of fixing portions, the butt joint portion being located in the accommodation opening and connected with the through-flow portion, and at least one of the plurality of fixing portions being fixedly connected with the circuit board.

5. The battery pack of claim 1, wherein, The frame body is provided with a fixing member, and the main body portion is provided with a fixing hole, and the fixing member fixes the main body portion through the fixing hole.

6. The battery pack of claim 5, wherein, The frame body is further provided with a positioning column, and the main body portion is provided with a positioning hole, and the positioning column positions the main body portion through the positioning hole.

7. The battery pack of claim 6, wherein, The fixing holes are distributed at two ends of the main body portion, and the positioning holes are distributed at a middle portion of the main body portion.

8. The battery pack of claim 5, wherein, The fixing member is snap-fitted with the fixing hole.

9. The battery pack of claim 1, wherein, The frame body is provided with a communication opening, and the electrical connection end of the battery cell is exposed to the first face through the communication opening. The main body portion is protruded in a direction close to the first face to form a recessed groove portion, the recessed groove portion is embedded in the communication opening and connected with the electrical connection end of the battery cell, and a raised spacing is formed between the main body portion and the first face.

10. The battery pack of claim 2, wherein, The battery cell has a plurality of battery cells, the plurality of battery cells form N columns along the first direction, and the plurality of battery cells form M rows along the second direction, N being a positive integer greater than or equal to 2, and M being a positive integer greater than or equal to 2. The plurality of battery cells in the same column can be connected with the same main body portion. Each of the battery cells in the first row is connected with one end of the adjacent two main body portions, and each of the battery cells in the Mth row is connected with the other end of the adjacent two main body portions.

11. An energy storage power supply, characterized by, The energy storage power supply comprises the battery pack according to any one of claims 1-10.

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