Battery cell structure and battery module

Abstract

The utility model discloses a battery cell structure and a battery module, and belongs to the technical field of energy storage. The side part of the battery cell structure comprises a plurality of side wall surfaces, so that the strength and the stability of the battery cell structure can be improved, and the durability and the reliability of the battery cell are improved. Due to the arrangement of the at least two positive electrode connecting parts and the at least two negative electrode connecting parts, the positive electrode and the negative electrode of the battery cell can be conveniently connected with other circuits or batteries, and the complexity and the workload of connection are reduced. When a plurality of battery cell structures are subjected to series-parallel connection mode conversion, only the orientation of the side wall surface of each battery cell structure needs to be changed, so that the operation is simplified, the efficiency of series-parallel connection is improved, and the combination mode of the plurality of battery cell structures is more flexible. Besides, different numbers of positive and negative electrode connecting parts can be selected according to actual requirements, and different battery application and design requirements can be met, so that when a plurality of battery cell structures are assembled into a battery module, the limitation of placement positions and combination modes of other facilities such as hardware and power distribution is avoided.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular, relates to a battery cell structure and a battery module. Background Art

[0002] The current battery cell structure mostly adopts the form of same-side bipolar column or opposite-side bipolar column. Regardless of the same-side bipolar column or opposite-side bipolar column, when multiple battery cell structures are connected in series and parallel through conductive connecting sheets, the relative position of the poles is limited, resulting in limited combination of battery cells. In addition, when multiple battery cell structures are assembled into battery modules, the placement and combination of other hardware, power distribution and other facilities are limited. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery cell structure and a battery module, which aims to solve the problem that the combination of battery cells is limited due to the limitation of the relative position of the poles in the prior art, and also leads to the problem that the placement and combination of other hardware, power distribution and other facilities are limited when multiple battery cell structures are assembled into a battery module.

[0004] In a first aspect, the present application provides a battery cell structure, wherein a side portion of the battery cell structure includes a plurality of side wall surfaces, the plurality of side wall surfaces include at least two first side wall surfaces and at least two second side wall surfaces, the at least two first side wall surfaces are each provided with a positive electrode connection portion, and the at least two second side wall surfaces are each provided with a negative electrode connection portion.

[0005] According to the battery cell structure of the present application, the side of the battery cell structure includes a plurality of side wall surfaces, so that the strength and stability of the battery cell structure can be increased, and the durability and reliability of the battery cell can be improved. The provision of at least two positive electrode connection parts and at least two negative electrode connection parts allows the positive and negative electrodes of the battery cell to be conveniently connected to other circuits or batteries, reducing the complexity and workload of the connection. When multiple battery cell structures are converted in series-parallel mode, it is only necessary to reverse the orientation of the side wall surfaces of each battery cell structure, which simplifies the operation, improves the efficiency of the series-parallel connection, and makes the combination of multiple battery cell structures more flexible. In addition, different numbers of positive and negative electrode connection parts can be selected according to actual needs, which can adapt to different battery applications and design requirements, so that when multiple battery cell structures are assembled into a battery module, the placement and combination of other hardware, power distribution and other facilities are avoided. Restriction.

[0006] According to one embodiment of the present application, the battery cell structure includes:

[0007] A plurality of positive electrode sheets, each of which has at least two first side surfaces, the at least two first side surfaces are arranged corresponding to the at least two first side walls, and each of the first side surfaces is provided with a positive electrode ear;

[0008] A plurality of negative electrode sheets, wherein the plurality of negative electrode sheets and the plurality of positive electrode sheets are alternately arranged along a first direction, each of the negative electrode sheets has at least two second side surfaces, the at least two second side surfaces are arranged corresponding to the at least two second side walls, and each of the second side surfaces is provided with a negative electrode ear;

[0009] A plurality of separators, each of which is sandwiched between adjacent positive electrode sheets and negative electrode sheets;

[0010] Wherein, each of the positive electrode connecting parts includes a plurality of positive electrode tabs sequentially arranged along the first direction, and each of the negative electrode connecting parts includes a plurality of negative electrode tabs sequentially arranged along the first direction.

[0011] According to an embodiment of the present application, one end of one of the two adjacent diaphragms is connected to the other end of the other diaphragm, so that the two adjacent diaphragms are suitable for enclosing and forming a containing space;

[0012] The positive electrode sheet or the negative electrode sheet is in the accommodation space, and when the positive electrode sheet is in the accommodation space, the positive electrode tab is suitable for extending out of the accommodation space, and when the negative electrode tab is in the accommodation space, the negative electrode tab is suitable for extending out of the accommodation space.

[0013] According to an embodiment of the present application, each of the first side surfaces is provided with at least two positive electrode tabs, and the at least two positive electrode tabs are arranged at intervals along the circumference of the positive electrode sheet; and / or,

[0014] Each of the second side surfaces is provided with at least two negative electrode tabs, and the at least two negative electrode tabs are arranged at intervals along the circumferential direction of the negative electrode sheet.

[0015] According to one embodiment of the present application, the battery cell structure further includes:

[0016] At least two first conductive cover plates, wherein the first conductive cover plates are respectively arranged opposite to the at least two first side surfaces, and each of the first conductive cover plates is connected to a corresponding plurality of the positive electrode tabs;

[0017] At least two second conductive cover plates, the at least two second conductive cover plates are respectively arranged opposite to the at least two second side surfaces, each of the second conductive cover plates is connected to a corresponding plurality of the negative electrode ears, and the first conductive cover plate and the second conductive cover plate are connected via a first insulating member;

[0018] The positive electrode connection portion is formed on the first conductive cover plate, and the negative electrode connection portion is formed on the second conductive cover plate.

[0019] According to an embodiment of the present application, one ends of the two first conductive cover plates are connected, one ends of the two second conductive cover plates are connected, and the other ends of the two first conductive cover plates are connected to the other ends of the two second conductive cover plates through the first insulating member.

[0020] According to an embodiment of the present application, the two first conductive cover plates, the two second conductive cover plates and the first insulating member are enclosed together to form a side frame;

[0021] The battery cell structure also includes two conductive end covers, which respectively cover the two openings of the side frame, each of which includes two first conductive end covers that are opposite and spaced apart and a second insulating member sandwiched between the two first conductive end covers, one of the two first conductive end covers is connected to the two first conductive cover plates, and one of the two first conductive end covers is connected to the two second conductive cover plates.

[0022] In a second aspect, the present application provides a battery module, which includes a battery cell structure as described above, wherein the side portion of the battery cell structure includes a plurality of side wall surfaces, the plurality of side wall surfaces include at least two first side wall surfaces and at least two second side wall surfaces, the at least two first side wall surfaces are both provided with a positive electrode connection portion, and the at least two second side wall surfaces are both provided with a negative electrode connection portion.

[0023] According to the battery module of the present application, the side of the battery cell structure includes multiple side wall surfaces, so that the strength and stability of the battery cell structure can be increased, and the durability and reliability of the battery cell can be improved. The provision of at least two positive electrode connecting parts and at least two negative electrode connecting parts allows the positive and negative electrodes of the battery cell to be conveniently connected to other circuits or batteries, reducing the complexity and workload of the connection. When multiple battery cell structures are converted into series-parallel modes, it is only necessary to reverse the orientation of the side wall surfaces of each battery cell structure, which simplifies the operation, improves the efficiency of series-parallel connection, and makes the combination of multiple battery cell structures more flexible. In addition, different numbers of positive and negative electrode connecting parts can be selected according to actual needs to adapt to different battery applications and design requirements, so that when multiple battery cell structures are assembled into a battery module, the placement and combination of other hardware, power distribution and other facilities are not restricted.

[0024] According to an embodiment of the present application, a plurality of the battery cell structures are provided, and a positive electrode connection portion of at least one of the battery cell structures and a negative electrode connection portion of at least one of the battery cell structures are connected via a conductive connection portion.

[0025] According to an embodiment of the present application, a heat dissipation structure is further provided between two adjacent battery core structures, and the heat dissipation structure is used to cool the two adjacent battery core structures.

[0026] According to an embodiment of the present application, each of the heat dissipation structures includes a liquid cooling plate, each of the liquid cooling plates has a refrigerant flow channel formed therein, the liquid inlets of the refrigerant flow channels of the multiple liquid cooling plates are connected, and the liquid outlets of the refrigerant flow channels of the multiple liquid cooling plates are connected; or,

[0027] Each of the heat dissipation structures includes a liquid cooling plate, each of which has a refrigerant flow channel formed therein. Among the multiple liquid cooling plates, the liquid inlet of the refrigerant flow channel of one liquid cooling plate is connected to the liquid outlet of the refrigerant flow channel of another liquid cooling plate.

[0028] According to an embodiment of the present application, two heat dissipation surfaces of two adjacent battery core structures that are arranged opposite to each other are both provided with elastic heat-conducting members, and the two elastic heat-conducting members are both in contact with the heat dissipation structure.

[0029] Additional aspects and advantages 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 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 structural schematic diagram of a battery cell structure provided in an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A schematic diagram of the structure of the positive electrode sheet of the battery cell structure;

[0033] Figure 3 yes Figure 1 A schematic diagram of the structure of the negative electrode sheet of the battery cell structure;

[0034] Figure 4 yes Figure 1 A schematic top view of the arrangement of multiple negative electrode sheets and multiple positive electrode sheets;

[0035] Figure 5 yes Figure 1 A cross-sectional schematic diagram of the arrangement of multiple negative electrode sheets, multiple positive electrode sheets and multiple separators;

[0036] Figure 6 This is one of the battery module schematic diagrams provided in the embodiments of the present application;

[0037] Figure 7 This is the second schematic diagram of the battery module provided in the embodiment of the present application;

[0038] Figure 8 yes Figure 7 One of the structural schematic diagrams of the conductive end cap in FIG.

[0039] Fig. 9 This is the third schematic diagram of the battery module provided in the embodiment of the present application;

[0040] Fig.10 This is the fourth schematic diagram of the battery module provided in the embodiment of the present application;

[0041] Fig.11 This is the fifth schematic diagram of the battery module provided in the embodiment of the present application;

[0042] Fig.12 This is the sixth schematic diagram of the battery module provided in the embodiment of the present application;

[0043] Fig.13 yes Fig.12 One of the structural schematic diagrams of multiple conductive end caps;

[0044] Fig.14 It is a structural schematic diagram of multiple battery core structures, heat dissipation structures and elastic heat conductive parts provided in an embodiment of the present application;

[0045] Fig.15 This is one of the structural schematic diagrams of multiple liquid cooling plates connected to each other provided in the embodiment of the present application;

[0046] Fig.16 This is the second structural schematic diagram of multiple liquid cooling plates connected to each other provided in an embodiment of the present application.

[0047] Reference numerals:

[0048] Battery module 1000;

[0049] A battery cell structure 100, a first side wall surface 101, and a second side wall surface 102;

[0050] A positive electrode sheet 110, a first side surface 111, and a positive electrode ear 112;

[0051] Negative electrode sheet 120, second side surface 121, negative electrode ear 122;

[0052] Diaphragm 130;

[0053] A first conductive cover plate 141, a second conductive cover plate 142, a first insulating member 143, a conductive end cover 144, a first conductive end cover 1441, and a second insulating member 145;

[0054] Conductive connection portion 200;

[0055] Heat dissipation structure 300, liquid cooling plate 310;

[0056] Elastic heat conductive member 400;

[0057] Accommodating space a. DETAILED DESCRIPTION

[0058] 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 having 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 limiting the present application.

[0059] Reference below Figure 1-Figure 16 The battery cell structure and battery module according to the embodiments of the present application are described.

[0060] Reference Figure 1 The side of the battery cell structure 100 includes multiple side wall surfaces, and the multiple side wall surfaces include at least two first side wall surfaces 101 and at least two second side wall surfaces 102. At least two first side wall surfaces 101 are each provided with a positive electrode connection portion, and at least two second side wall surfaces 102 are each provided with a negative electrode connection portion.

[0061] According to the battery cell structure 100 of the present application, the side of the battery cell structure 100 includes a plurality of sidewall surfaces, so that the strength and stability of the battery cell structure 100 can be increased, and the durability and reliability of the battery cell can be improved. The provision of at least two positive electrode connection parts and at least two negative electrode connection parts allows the positive and negative electrodes of the battery cell to be conveniently connected to other circuits or batteries, reducing the complexity and workload of the connection. When multiple battery cell structures 100 are converted in series-parallel mode, it is only necessary to turn the direction of the sidewall surfaces of each battery cell structure 100, which simplifies the operation, improves the efficiency of the series-parallel connection, and makes the combination of multiple battery cell structures 100 more flexible. In addition, different numbers of positive and negative electrode connection parts can be selected according to actual needs, which can adapt to different battery applications and design requirements, so that when multiple battery cell structures 100 are assembled into a battery module, the placement and combination of other hardware, power distribution and other facilities are avoided. Restriction.

[0062] Reference Figures 2 to 5 In one embodiment, the battery cell structure 100 includes a plurality of positive electrode sheets 110 , a plurality of negative electrode sheets 120 and a plurality of separators 130 .

[0063] Among the multiple positive electrode sheets 110, each positive electrode sheet 110 has at least two first side surfaces 111, and the at least two first side surfaces 111 are arranged corresponding to at least two first side walls 101. Each first side surface 111 is provided with a positive electrode ear 112. In this way, by designing the positive electrode sheet 110 to have at least two first side surfaces 111 and to be arranged corresponding to the first side walls 101, the integrity and stability of the battery cell structure 100 can be increased, and the durability and reliability of the battery cell can be improved. The arrangement of the positive electrode ear 112 can conveniently connect the positive electrode sheet 110 with other circuits or battery components, making the conduction more efficient and reducing energy loss and resistance. This design can select different numbers and shapes of positive electrode sheets 110 according to actual needs, so as to adapt to different battery applications and design requirements.

[0064] A plurality of negative electrode sheets 120 and a plurality of positive electrode sheets 110 are arranged alternately and spaced along a first direction, and each negative electrode sheet 120 has at least two second side surfaces 121, and at least two second side surfaces 121 are arranged corresponding to at least two second side walls 102, and each second side surface 121 is provided with a negative electrode ear 122. Thus, by designing the negative electrode sheet 120 to have at least two second side surfaces 121 and to be arranged corresponding to the second side walls 102, the integrity and stability of the battery structure 100 can be increased, and the durability and reliability of the battery can be improved. The arrangement of the negative electrode ear 122 can conveniently connect the negative electrode sheet 120 with other circuits or battery components, and conduction is more efficient, reducing energy loss and resistance. This design can select different numbers and shapes of negative electrode sheets 120 according to actual needs, and can adapt to different battery applications and design requirements. Since the positive and negative electrode sheets 120 are arranged alternately and spaced, the distribution of current on the electrode can be effectively improved, thereby optimizing the charging and discharging efficiency of the battery. Since the positive and negative electrode sheets 120 are arranged alternately, the heat distribution of the battery during the charging and discharging process is more uniform, which helps to optimize the thermal management of the battery.

[0065] A plurality of diaphragms 130 are provided, each diaphragm 130 is sandwiched between adjacent positive electrode sheets 110 and negative electrode sheets 120. In this way, the presence of the diaphragm 130 can effectively prevent the positive electrode sheets 110 and the negative electrode sheets 120 from directly contacting each other, thereby avoiding the occurrence of faults such as short circuits and improving the safety of the battery. The diaphragm 130 can fix the position between the positive electrode sheets 110 and the negative electrode sheets 120, increase the stability of the battery cell structure 100, and improve the durability and reliability of the battery cell. The diaphragm 130 can reduce the resistance between the positive electrode sheets 110 and the negative electrode sheets 120, thereby optimizing the conduction of current and improving the efficiency and performance of the battery. According to actual needs. The provision of the diaphragm 130 makes the manufacturing process of the battery simpler and more convenient, because the distance and position between the positive electrode sheets 110 and the negative electrode sheets 120 can be more easily controlled.

[0066] Each positive electrode connection portion includes a plurality of positive electrode tabs 112 arranged in sequence along the first direction, and each negative electrode connection portion includes a plurality of negative electrode tabs 122 arranged in sequence along the first direction, so that resistance and energy loss can be reduced and efficiency and performance of the battery cell structure 100 can be improved.

[0067] It should be noted that the diaphragm 130 of different materials, thicknesses and shapes can be selected to adapt to different battery applications and design requirements. Specifically, the diaphragm 130 is made of a variety of materials, and the diaphragm 130 is made of at least one of polyolefin materials, polylinolenic alcohol materials, glass fiber materials and ceramic materials. Polyolefin materials include polyethylene, polypropylene, etc., which have excellent mechanical properties, chemical stability and are relatively cheap, and are therefore widely used in diaphragm 130 materials for lithium batteries. Polylinolenic alcohol materials have good high temperature resistance, good puncture resistance, and low conduction resistance. Glass fiber materials are resistant to high temperatures, can resist corrosive electrolytes, and can achieve polarization. Ceramic materials are not subject to chemical corrosion, which can reduce the risk of polarization and thermal runaway.

[0068] Reference Figure 5In one embodiment, one end of one of the two adjacent separators 130 is connected to the other end of the other separator 130, so that the two adjacent separators 130 are suitable for surrounding to form a containing space a; the positive electrode sheet 110 or the negative electrode sheet 120 is in the containing space a, and when the positive electrode sheet 110 is in the containing space a, the positive electrode ear 112 is suitable for extending out of the containing space a, and when the negative electrode ear 122 is in the containing space a, the negative electrode ear 122 is suitable for extending out of the containing space a, so that the stability of the battery structure 100 can be increased, so that the components inside the battery structure 100 will not be disturbed by the external environment, thereby ensuring the stability and safety of the battery structure 100. The positive electrode sheet 110 or the negative electrode sheet 120 is the main electrochemical active area in the battery structure 100, and they can form a place for electrochemical reaction together with the separator 130. When the positive electrode sheet 110 or the negative electrode sheet 120 is in the accommodation space a, they can exist stably and perform their functions. At the same time, due to the presence of the diaphragm 130, unsafe situations such as short circuit or overcharging can be prevented, thereby improving the safety of the battery. When the positive electrode sheet 110 is in the accommodation space a, the positive electrode ear 112 can extend out of the accommodation space a, and when the negative electrode sheet 120 is in the accommodation space a, the negative electrode ear 122 can also extend out of the accommodation space a. The battery cell structure 100 can be effectively prevented from expanding or deforming during the charging and discharging process, thereby improving the durability and reliability of the battery cell structure 100. Since one end of a diaphragm 130 is connected to the other end of another diaphragm 130, the electrode sheet can be better protected. During the use of the battery cell structure 100, external impacts or other factors may cause the electrode sheet to be subjected to force, and the connected end of the diaphragm 130 can absorb these impacts, reduce damage to the electrode sheet, and better control the heat distribution inside the battery. During the charge and discharge process, heat is generated inside the battery, and the connection between one end of a diaphragm 130 and the other end of another diaphragm 130 can effectively conduct heat away, thereby optimizing the thermal management performance of the battery. By connecting one end of a diaphragm 130 to the other end of another diaphragm 130, the ineffective space in the battery cell structure 100 can be reduced, so that more space can be used to accommodate active materials. This helps to improve the energy density of the battery cell structure 100, so that the battery of the same volume can store more electrical energy.

[0069] Reference Figure 2In one embodiment, each first side surface 111 is provided with at least two positive pole ears 112, and at least two positive pole ears 112 are arranged at intervals along the circumference of the positive electrode sheet 110. In this way, by arranging multiple positive pole ears 112 on each first side surface 111, the stability and strength of the battery structure 100 can be increased. The arrangement of multiple positive pole ears 112 can balance the expansion or contraction of the battery during the charging and discharging process, and reduce the risk of deformation or damage of the battery. The positive pole ears 112 are arranged at intervals along the circumference of the positive electrode sheet 110, which can better extract heat from the inside of the battery, thereby optimizing the thermal management performance of the battery. Due to the interval arrangement between the positive pole ears 112, the heat dissipation area can be increased, and the heat dissipation efficiency of the battery can be improved. By arranging multiple positive pole ears 112 on each first side surface 111, the risk of short circuit when the battery is impacted or squeezed can be reduced. The arrangement of multiple positive pole ears 112 can balance the stress distribution inside the battery, reduce the possibility of stress concentration, and improve the safety of the battery. During the manufacturing process, the arrangement of multiple positive tabs 112 can simplify the production process, and the spacing between two adjacent positive tabs 112 in the multiple positive tabs 112 facilitates the fixing of multiple positive electrode sheets 110. Since the positive tabs 112 are arranged at intervals along the circumferential direction, the manufacture of multiple positive tabs 112 can be completed at the same time, thereby improving production efficiency.

[0070] It should be noted that the multiple positive electrode sheets 110 are fixed by using tape or the like, and the fixing glue or other fixing medium passes through the interval between two adjacent positive electrode ears 112 to fix the multiple positive electrode sheets 110; at the same time, according to the fixing effect, fixing tapes can be added to the corners of the multiple positive electrode sheets 110.

[0071] Reference Figure 3, each second side surface 121 is provided with at least two negative pole ears 122, and at least two negative pole ears 122 are arranged at intervals along the circumference of the negative electrode sheet 120. In this way, by arranging multiple negative pole ears 122 on each second side surface 121, the stability and strength of the battery structure 100 can be increased. The arrangement of multiple negative pole ears 122 can balance the expansion or contraction of the battery during the charging and discharging process, and reduce the risk of deformation or damage of the battery. The negative pole ears 122 are arranged at intervals along the circumference of the negative electrode sheet 120, which can better extract heat from the inside of the battery, and optimize the thermal management performance of the battery. Due to the interval arrangement between the negative pole ears 122, the heat dissipation area can be increased and the heat dissipation efficiency of the battery can be improved. By arranging multiple negative pole ears 122 on each second side surface 121, the risk of short circuit when the battery is impacted or squeezed can be reduced. The arrangement of multiple negative pole ears 122 can balance the stress distribution inside the battery, reduce the possibility of stress concentration, and improve the safety of the battery. During the manufacturing process, the arrangement of multiple negative electrode ears 122 can simplify the production process, and the interval between two adjacent negative electrode ears 122 in the multiple negative electrode ears 122 facilitates the fixing of multiple negative electrode sheets 120. Since the negative electrode ears 122 are arranged at intervals along the circumferential direction, the manufacture of multiple negative electrode ears 122 can be completed at the same time, thereby improving production efficiency.

[0072] It should be noted that the multiple negative electrode sheets 120 are fixed by using tape or the like, and the fixing glue or other fixing medium passes through the interval between two adjacent negative electrode ears 122 to fix the multiple negative electrode sheets 120; at the same time, according to the fixing effect, fixing tapes can be added to the corners of the multiple negative electrode sheets 120.

[0073] Reference Figure 1 , Figure 6 to Figure 7In one embodiment, the cell structure 100 further includes at least two first conductive covers 141 and at least two second conductive covers 142, at least two first conductive covers 141, the first conductive covers 141 are respectively arranged opposite to at least two first side surfaces 111, each first conductive cover 141 is connected to a corresponding plurality of positive pole ears 112, at least two second conductive covers 142 are respectively arranged opposite to at least two second side surfaces 121, each second conductive cover 142 is connected to a corresponding plurality of negative pole ears 122, so that by adding the first conductive covers 141 and the second conductive covers 142, the current path inside the cell can be increased. The first conductive cover 141 is connected to the positive pole ear 112, and the second conductive cover 142 is connected to the negative pole ear 122, so that the current can be more smoothly derived from the positive and negative pole ears 122, thereby improving the efficiency and performance of the battery. The addition of the first conductive cover 141 and the second conductive cover 142 can further enhance the structural stability of the cell. The connection between the conductive cover plate and the positive and negative tabs 122 can provide additional support and fixation, reduce the expansion or deformation of the battery cell during the charging and discharging process, and improve the durability and reliability of the battery cell. The addition of the first conductive cover plate 141 and the second conductive cover plate 142 can further optimize the thermal management performance of the battery and improve the heat dissipation efficiency of the battery cell structure 100. By adding the first conductive cover plate 141 and the second conductive cover plate 142, the safety of the battery can be further improved. The provision of the first conductive cover plate 141 and the second conductive cover plate 142 can provide additional protection and reduce the risk of short circuit when the battery cell structure 100 is impacted or squeezed.

[0074] Reference Figure 6 , Figure 7 , Fig. 9 as well as Fig.12, the first conductive cover plate 141 and the second conductive cover plate 142 are connected by the first insulating member 143, so that the first cover plate with positive polarity and the second cover plate with negative polarity can be separated by the first insulating member 143, which can prevent the battery structure 100 from short-circuiting during use. If the positive cover plate and the negative cover plate are in direct contact, the current will flow directly through the cover plate without passing through the inside of the battery cell, thereby causing a short circuit. The use of the first insulating member 143 can ensure that there is no direct electrical connection between the first cover plate and the second cover plate, avoiding the risk of short circuit. Separating the first cover plate and the second cover plate by the first insulating member 143 can improve the safety of the battery structure 100. Since there is no direct electrical connection between the first cover plate and the second cover plate, even when the battery structure 100 is impacted or squeezed. By separating the first cover plate and the second cover plate by the first insulating member 143, the manufacturing process of the battery structure 100 can be simplified. Direct connection between the first cover plate and the second cover plate can be avoided during the manufacturing process, reducing the manufacturing steps and difficulty. The first cover plate and the second cover plate are separated by the first insulating member 143, which can increase the flexibility of the design of the battery cell structure 100. The first cover plate and the second cover plate are separated by the first insulating member 143, which can enhance the structural stability of the battery cell structure 100. The first insulating member 143 can provide a certain support and fixation effect to prevent the first and second cover plates from moving or deforming during the use of the battery cell structure 100, thereby maintaining the stability and reliability of the battery cell structure 100.

[0075] In addition, the positive electrode connection part is formed on the first conductive cover plate 141, and the negative electrode connection part is formed on the second conductive cover plate 142, so that the polarity of the battery cell structure 100 is divided by the first cover plate and the second cover plate, so no protruding pole is set, and the conductive connector has a higher space utilization rate when welding and fixing the two battery cell structures 100, which can provide more layout space for hardware and other structural parts. In addition, the battery cell structure 100 is not provided with a protruding pole, which improves the aesthetics of the battery cell structure 100 and makes the battery cell structure 100 have better applicability. The battery cell structure 100 is connected to other battery cell structures 100 or electrical devices through the first cover plate and the second cover plate, and has good versatility and is not affected by the direction of the pole. In addition, according to subsequent use requirements, the injection port and the explosion-proof valve can be set on the corresponding first cover plate or the second cover plate.

[0076] Reference Figure 1In one embodiment, one end of the two first conductive cover plates 141 is connected, one end of the two second conductive cover plates 142 is connected, and the other end of the two first conductive cover plates 141 is connected to the other end of the two second conductive cover plates 142 through the first insulating member 143. In this way, by connecting the two first conductive cover plates 141 and the two second conductive cover plates 142 respectively, it can be ensured that the electrical connection between these cover plates is reliable. This helps to ensure that the current can flow smoothly in the circuit, so that the circuit functions normally. By connecting the other end of the two first conductive cover plates 141 to the other end of the two second conductive cover plates 142 using the first insulating member 143, the electrical isolation between the two groups of conductive cover plates can be ensured. This can prevent interference or short circuits between different circuit parts to a certain extent, thereby enhancing the stability and reliability of the circuit. The use of this connection method can simplify the manufacturing process of the battery cell structure 100, reduce the manufacturing steps and time, and improve production efficiency.

[0077] Reference Figure 1 , reference Figure 6 , Figure 7 , Fig. 9 as well as Fig.12 In one embodiment, two first conductive cover plates 141, two second conductive cover plates 142 and a first insulating member 143 are enclosed together to form a side frame. In this way, by connecting the two first conductive cover plates 141 and the two second conductive cover plates 142 and fixing them with the first insulating member 143, a stable and reliable side frame structure can be formed. This side frame can provide certain support and protection, which helps to maintain the stability of the shape of the battery structure 100. The side frame structure can enhance the overall insulation performance of the battery structure 100. The first insulating member 143 can effectively separate the first conductive cover plate 141 and the second conductive cover plate 142 to prevent direct electrical contact between them, thereby avoiding short circuits or interference. At the same time, the side frame structure can also improve the circuit board's resistance to mechanical shock and vibration, which helps to ensure the stable operation of the battery structure 100.

[0078] The battery cell structure 100 also includes two conductive end caps 144, which cover the two openings of the side frame respectively. In this way, the conductive end caps 144 can protect the positive electrode sheet 110 and the negative electrode sheet 120 from external mechanical damage or contaminants. As covers of the side frames, they can prevent dust, moisture or other contaminants from entering the interior of the battery cell structure 100, thereby maintaining the stability and reliability of the battery cell structure 100. By covering the two conductive end caps 144 on the two openings of the side frame respectively, the stability of the battery cell structure 100 can be enhanced. While maintaining the overall structural integrity of the battery cell structure 100, the conductive end caps 144 can also prevent the side frame from being deformed or damaged when subjected to external pressure or impact. The design of the conductive end caps 144 can further improve the safety of the circuit.

[0079] Reference Figure 8 as well as Fig.13 Each conductive end cap 144 includes two first conductive end caps 1441 that are opposite and spaced apart and a second insulating member 145 sandwiched between the two first conductive end caps 1441. One of the two first conductive end caps 1441 is connected to the two first conductive cover plates 141, and the other of the two first conductive end caps 1441 is connected to the two second conductive cover plates 142. Thus, by connecting the two first conductive end caps 1441 to the two first conductive cover plates 141 and the two second conductive cover plates 142, respectively, the stability of the circuit connection can be enhanced. At the same time, the processing technology is simplified, and the two first conductive cover plates 141 and one of the two first conductive end caps 1441 can be directly welded, and the two second conductive cover plates 142 and the other of the two first conductive end caps 1441 can be directly welded, thereby reducing production time and cost. The second insulating member 145 is sandwiched between the two first conductive end caps 1441, which can enhance the insulation protection of the circuit. The second insulating member 145 can effectively separate the two first conductive end caps 1441 to prevent direct electrical contact between them, thereby avoiding short circuit or interference.

[0080] In another embodiment, the battery structure 100 may also include two insulating end caps, which cover the two openings of the side frame respectively, and the insulating end caps can enhance the insulation protection of the battery structure 100. They cover the openings of the side frame to prevent unauthorized personnel or animals from accessing the circuits and components inside the battery, thereby reducing potential electrical risks and safety hazards. Since the insulating end caps are made of insulating materials, the circuits of the battery can be effectively isolated from the outside world, thereby improving the safety of the battery structure 100. Even in abnormal circumstances, such as overheating or failure of the battery structure 100, the insulating end caps can prevent current leakage and short circuit, thereby reducing potential hazards and risks. The design of the insulating end caps can also facilitate the maintenance and replacement of the battery structure 100. When it is necessary to check or replace the circuits or components inside the battery structure 100, the corresponding insulating end caps can be simply removed, thereby providing convenient entrances and exits, making maintenance and replacement work more efficient and convenient. The design of the insulating end caps can also improve the overall aesthetics of the battery structure 100. They can hide the circuits and components inside the battery cell structure 100, making the outer surface of the battery cell structure 100 more neat and beautiful.

[0081] Reference Figures 6 to 16 In a second aspect, the present application further provides a battery module 1000 , and the battery module 1000 includes the above-mentioned battery cell structure 100 .

[0082] According to the battery module 1000 of the present application, the side of the battery structure 100 includes a plurality of side wall surfaces, so that the strength and stability of the battery structure 100 can be increased, and the durability and reliability of the battery can be improved. The provision of at least two positive electrode connection parts and at least two negative electrode connection parts allows the positive and negative electrodes of the battery cell to be conveniently connected to other circuits or batteries, reducing the complexity and workload of the connection. When multiple battery cell structures 100 are converted in series-parallel mode, it is only necessary to reverse the orientation of the side wall surfaces of each battery cell structure 100, which simplifies the operation, improves the efficiency of the series-parallel connection, and makes the combination of multiple battery cell structures 100 more flexible. In addition, different numbers of positive and negative electrode connection parts can be selected according to actual needs to adapt to different battery applications and design requirements. The multiple cell structures 100 can be welded according to the requirements of series and parallel connection. In addition, the multiple cell structures 100 can be rotated according to the requirements, and the directions of the negative electrode connection part and the positive electrode connection part of the corresponding cell structure are selected, so that when the multiple cell structures 100 are assembled into a battery module 1000, the placement and combination of other hardware, power distribution and other facilities are not restricted.

[0083] Reference Figure 6 , Figure 7 , Fig. 9 as well as Fig.12 In one embodiment, a plurality of cell structures 100 are provided, and the positive electrode connection portion of at least one cell structure 100 and the negative electrode connection portion of at least one cell structure 100 are connected by a conductive connection portion 200. In this way, since the conductive connection portion 200 connects the plurality of cell structures 100 together, the overall stability of the battery module 100 can be enhanced. This helps to ensure that the battery module 1000 remains stable when subjected to external shock or vibration, thereby reducing the risk of damage. By connecting the positive electrode connection portion of at least one cell structure 100 and the negative electrode connection portion of at least one cell structure 100, complex circuit layout and connection can be avoided, thereby reducing the complexity and cost of manufacturing. When the capacity or voltage of the battery pack needs to be increased, more cell structures 100 can be simply added and connected in the same arrangement. At the same time, for the cell structure 100 that needs to be repaired or replaced, it can be conveniently removed from the battery pack and replaced with a new cell structure 100.

[0084] Reference Figure 6 , Figure 7 , Fig. 9 as well as Fig.12In an embodiment of the present application, the positive electrode connection portion includes a first conductive cover plate 141, and the negative electrode connection portion includes a second conductive cover plate 142. The first conductive cover plate 141 or the second conductive cover plate 142 is connected by the conductive connection portion 200, so that seamless welding can be achieved, the aesthetics is improved, and the space utilization rate is higher, which can provide more layout space for hardware and other structural parts.

[0085] Reference Figure 6 and Figure 7 In one embodiment, multiple battery cell structures 100 are arranged in sequence along one direction. This arrangement can also simplify the circuit design of the battery module 1000, making the battery pack more compact and space-saving. This helps to improve the utilization rate of the battery module 1000, so that more battery cell structures 100 can be installed in a limited space, thereby increasing the energy density of the battery module 1000.

[0086] Reference Figures 9 to 12 In another embodiment, the plurality of battery cell structures 100 may be arranged in sequence in a first direction and in a second direction, the second direction being perpendicular to the first direction. Thus, by arranging the plurality of battery cell structures 100 in sequence in two directions, the overall performance of the battery module 1000 may be increased. This helps ensure that the current flows more smoothly in the battery module 1000, thereby reducing resistance and energy loss and improving the performance of the battery module 1000. Since the battery cell structures 100 are arranged in two directions, the overall stability of the battery module 1000 may be enhanced. This helps ensure that the battery module 1000 remains stable when subjected to external shock or vibration, thereby reducing the risk of damage. This arrangement may also simplify the circuit design of the battery module 1000. By arranging the plurality of battery cell structures 100 in sequence in two directions, complex circuit layout and connection may be avoided, thereby reducing the complexity and cost of manufacturing. When the capacity or voltage of the battery module 1000 needs to be increased, more battery cell structures 100 may be simply added and connected in the same arrangement. At the same time, for the battery cell structure 100 that needs to be repaired or replaced, it can be conveniently removed from the battery module 1000 and replaced with a new battery cell structure 100. By arranging multiple battery cell structures 100 in sequence along two directions, the battery module 1000 can be made more compact and space-saving. This helps to improve space utilization, so that more battery cell structures 100 can be installed in a limited space, thereby increasing the energy density of the battery module 1000.

[0087] In addition, because the first conductive cover plate 141, the second conductive cover plate 142 and the conductive end cover 144 of the battery cell structure 100 are all electrical, when it is determined that the first conductive cover plate 141 or the second conductive cover plate 142 of the battery cell structure 100 needs to be connected to the first conductive cover plate 141 or the second conductive cover plate 142 of another battery cell structure 100 through the conductive connecting part 200, the remaining first conductive cover plate 141, the second conductive cover plate 142 and the conductive end cover 144 that need to contact the other battery cell structure 100 need to be covered with an insulating film to prevent short circuit or polarity connection.

[0088] Since the battery cell structure 100 generates heat during the charging and discharging process, if the temperature is too high, the performance and safety of the battery may be affected. Fig.14 In one embodiment, a heat dissipation structure 300 is further provided between two adjacent battery core structures 100. By providing the heat dissipation structure 300, the excess heat can be effectively dissipated from the battery module 1000, thereby reducing the temperature of the battery module 1000. The presence of the heat dissipation structure 300 can make the temperature of the battery module 1000 more stable and uniform, which helps to improve the performance of the battery module 1000. At a lower temperature, the charging and discharging performance of the battery module 1000 will be better, and the capacity will also be improved. By reducing the temperature of the battery module 1000 and maintaining a stable operating temperature, the life of the battery module 1000 can be extended. High temperature will accelerate the chemical reaction and material degradation inside the battery module 1000, and the heat dissipation structure 300 can help maintain a lower temperature, thereby extending the service life of the battery module 1000. The presence of the heat dissipation structure 300 can also improve the safety of the battery module 1000. In the case of overheating, the battery module 1000 may swell, short-circuit or other safety problems. Through effective heat dissipation design, the occurrence of these problems can be reduced and the safety of the battery module 1000 can be improved. This design can simplify the structure of the battery module 1000, making the manufacture and assembly of the battery module 1000 more convenient.

[0089] It should be noted that there are many types of heat dissipation structures 300. In one embodiment, the heat dissipation structure 300 may include a cooling pipe, and the cooling pipe may be in the form of a cooling pipe such as a duct gap, a liquid cooling plate 310, etc. The duct gap refers to a method of using air flow to cool the device. In the duct gap, air passes through the surface of the device or component, takes away the heat and dissipates it into the environment. This cooling method is suitable for devices that require a large amount of heat dissipation, such as computers, electronic equipment, etc.

[0090] Liquid cooling plate 310 is a device for liquid circulation cooling, which removes heat by circulating liquid through the heat-generating parts of the equipment. This cooling method is suitable for equipment that requires efficient heat dissipation, such as automobile engines, electronic chips, etc.

[0091] The form of the cooling duct depends on the specific application requirements and equipment design. For example, for some battery modules 1000 that require efficient heat dissipation, the liquid cooling plate 310 may be a better choice; while for some battery modules 1000 that require a large amount of heat dissipation, the air duct gap may be more suitable.

[0092] Specifically, refer to Fig.15 In one embodiment of the present application, each heat dissipation structure 300 includes a liquid cooling plate 310, and a refrigerant flow channel is formed in each liquid cooling plate 310. The liquid inlets of the refrigerant flow channels of the multiple liquid cooling plates 310 are connected, and the liquid outlets of the refrigerant flow channels of the multiple liquid cooling plates 310 are connected. In this way, the refrigerant flow channels inside the liquid cooling plate 310 can promote the circulation of liquid, thereby taking away heat from the battery core structure 100. By connecting the liquid inlets of multiple liquid cooling plates 310 and the liquid outlets of multiple liquid cooling plates 310, a plurality of refrigerant flow channels are arranged in parallel, so that the refrigerant can circulate in the entire heat dissipation system, thereby dissipating heat more efficiently, and ensuring the uniform distribution of the overall temperature of the battery module 1000. This design helps to reduce the temperature difference inside the battery module 1000 and improve the performance and stability of the battery module 1000. The parallel arrangement of multiple refrigerant flow channels can simplify the design and manufacturing process of the heat dissipation system. This design reduces the complexity of manufacturing and assembly and facilitates large-scale production. The refrigerant flow channel inside the liquid cooling plate 310 can effectively dissipate heat from the battery module 1000, thereby reducing the risk of overheating of the battery module 1000. This design helps to improve the safety of the battery module 1000 and reduce the occurrence of potential dangerous situations such as fire or explosion.

[0093] Specifically, refer to Fig.16In another embodiment of the present application, each heat dissipation structure 300 includes a liquid cooling plate 310, and a refrigerant flow channel is formed in each liquid cooling plate 310. Among the multiple liquid cooling plates 310, the liquid inlet of the refrigerant flow channel of one liquid cooling plate 310 is connected to the liquid outlet of the refrigerant flow channel of another liquid cooling plate 310. In this way, by connecting the liquid inlet of the refrigerant flow channel of one liquid cooling plate 310 with the liquid outlet of the refrigerant flow channel of another liquid cooling plate 310, multiple refrigerant flow channels can be arranged in series, which helps to enhance the heat dissipation effect and take away the heat from the battery core structure 100 more quickly. By interconnecting multiple liquid cooling plates 310, a large-scale cooling system can be formed. This design helps to improve the cooling efficiency, so that the temperature of the battery module 1000 can be reduced more quickly and maintained within a stable range. By connecting the liquid inlet of one liquid cooling plate 310 with the liquid outlet of another liquid cooling plate 310, the design and manufacturing process of the heat dissipation system can be simplified. This design reduces the complexity of manufacturing and assembly and facilitates large-scale production. A stable heat dissipation system can be formed by interconnecting multiple liquid cooling plates 310. This helps to ensure the stability and reliability of the battery module 1000 during operation and reduce performance fluctuations and failures caused by temperature changes. The series arrangement of multiple refrigerant flow channels can reduce the temperature inside the battery module 1000 and reduce the risk of overheating. This design helps to improve the safety of the battery module 1000 and reduce the occurrence of potential dangerous situations such as fire or explosion.

[0094] Reference Fig.14In one embodiment, two heat dissipation surfaces of two adjacent battery core structures 100 are provided with elastic heat conductive members 400, and the two elastic heat conductive members 400 are in contact with the heat dissipation structure 300. Thus, by providing the elastic heat conductive members 400 on the two heat dissipation surfaces, the heat conduction between the battery core structure 100 and the heat dissipation structure 300 can be enhanced. The elastic heat conductive member 400 can adapt to different surface shapes and temperature changes, thereby ensuring the effective transfer of heat. When the elastic heat conductive member 400 is in contact with the heat dissipation structure 300, the contact area between the heat dissipation surface and the heat dissipation structure 300 can be increased, thereby enhancing the heat dissipation effect. By closely contacting the elastic heat conductive member 400 with the heat dissipation structure 300, the heat dissipation and uniform distribution can be promoted. Since the elastic heat conductive member 400 is elastic, it can absorb and mitigate the thermal shock between the heat dissipation surface and the heat dissipation structure 300. When the device is started or shut down, this design can reduce the impact of temperature changes on the battery core structure 100, thereby extending the service life of the battery module 1000. By abutting the elastic heat conductive member 400 against the heat dissipation structure 300, the structural design of the battery module 1000 can be simplified. By arranging the elastic heat conductive member 400 on the heat dissipation surface of two adjacent battery cell structures 100, the additional space requirement can be reduced, thereby making the battery pack more compact and space-saving. In addition, the elastic heat conductive member 400 can, on the one hand, reserve sufficient expansion space for the battery cell structure 100, which is beneficial to the cycle performance of the battery cell structure 100; on the other hand, it can ensure the regulatory effect of the thermal management component on the battery cell results.

[0095] It should be noted that the battery module 1000 is in the form of battery cell structure 100-elastic heat conductor 400-heat dissipation structure 300-battery cell structure 100. After the position of the battery cell structure 100 and the direction of the poles are determined according to the series-parallel form, the battery module 100 is fastened with a fixed pre-tightening force; after the fastening is completed, multiple battery cell structures 100 can be welded and fixed.

[0096] In addition, there are many types of elastic heat-conducting member 400, for example, the elastic heat-conducting member 400 can be made of silicone rubber, fluoroplastic film, porous ceramic and high-quality foam plastic. Silicone rubber has ultra-high temperature anti-aging, wear resistance and weather resistance, and fluoroplastic film has the advantages of high temperature resistance, corrosion resistance, insulation and thermal conductivity. Porous ceramic is a ceramic material formed by heating graphite or graphite, and has good thermal conductivity. High-quality foam plastic is an insulating material that is loose, elastic and has good thermal conductivity. Because its material structure is loose and soft, it has good air thermal conductivity.

[0097] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0098] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0099] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0100] In the description of the present application, “plurality” means two or more.

[0101] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0102] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0103] In the description of this specification, the description with reference to the terms "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 embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does 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.

[0104] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery cell structure, characterized in that: The side of the battery structure includes multiple side wall surfaces, and the multiple side wall surfaces include at least two first side wall surfaces and at least two second side wall surfaces. The at least two first side wall surfaces are each provided with a positive electrode connection portion, and the at least two second side wall surfaces are each provided with a negative electrode connection portion.

2. The battery cell structure according to claim 1, characterized in that: The battery cell structure comprises: A plurality of positive electrode sheets, each of which has at least two first side surfaces, the at least two first side surfaces are arranged corresponding to the at least two first side walls, and each of the first side surfaces is provided with a positive electrode ear; A plurality of negative electrode sheets, wherein the plurality of negative electrode sheets and the plurality of positive electrode sheets are alternately arranged along a first direction, each of the negative electrode sheets has at least two second side surfaces, the at least two second side surfaces are arranged corresponding to the at least two second side walls, and each of the second side surfaces is provided with a negative electrode ear; A plurality of separators, each of which is sandwiched between adjacent positive electrode sheets and negative electrode sheets; Wherein, each of the positive electrode connecting parts includes a plurality of positive electrode tabs sequentially arranged along the first direction, and each of the negative electrode connecting parts includes a plurality of negative electrode tabs sequentially arranged along the first direction.

3. The battery cell structure according to claim 2, characterized in that: One end of one of the two adjacent diaphragms is connected to the other end of the other diaphragm, so that the two adjacent diaphragms are suitable for surrounding and forming a containing space; The positive electrode sheet or the negative electrode sheet is in the accommodation space, and when the positive electrode sheet is in the accommodation space, the positive electrode tab is suitable for extending out of the accommodation space, and when the negative electrode tab is in the accommodation space, the negative electrode tab is suitable for extending out of the accommodation space.

4. The battery cell structure according to claim 2, characterized in that: Each of the first side surfaces is provided with at least two positive electrode tabs, and the at least two positive electrode tabs are arranged at intervals along the circumference of the positive electrode sheet; and / or, Each of the second side surfaces is provided with at least two negative electrode tabs, and the at least two negative electrode tabs are arranged at intervals along the circumferential direction of the negative electrode sheet.

5. The battery core structure according to any one of claims 2 to 4, characterized in that: The battery cell structure also includes: At least two first conductive cover plates, wherein the first conductive cover plates are respectively arranged opposite to the at least two first side surfaces, and each of the first conductive cover plates is connected to a corresponding plurality of the positive electrode ears; At least two second conductive cover plates, the at least two second conductive cover plates are respectively arranged opposite to the at least two second side surfaces, each of the second conductive cover plates is connected to a corresponding plurality of the negative electrode ears, and the first conductive cover plate and the second conductive cover plate are connected via a first insulating member; The positive electrode connection portion is formed on the first conductive cover plate, and the negative electrode connection portion is formed on the second conductive cover plate.

6. The battery cell structure according to claim 5, characterized in that: One ends of the two first conductive cover plates are connected, one ends of the two second conductive cover plates are connected, and the other ends of the two first conductive cover plates are connected to the other ends of the two second conductive cover plates through the first insulating member.

7. The battery cell structure according to claim 6, characterized in that: The two first conductive cover plates, the two second conductive cover plates and the first insulating member are together enclosed to form a side frame; The battery cell structure also includes two conductive end covers, which respectively cover the two openings of the side frame, each of which includes two first conductive end covers that are opposite and spaced apart and a second insulating member sandwiched between the two first conductive end covers, one of the two first conductive end covers is connected to the two first conductive cover plates, and one of the two first conductive end covers is connected to the two second conductive cover plates.

8. A battery module, characterized in that: Comprising the battery core structure as claimed in any one of claims 1 to 7.

9. The battery module according to claim 8, characterized in that: A plurality of the battery cell structures are provided, and a positive electrode connection portion of at least one of the battery cell structures and a negative electrode connection portion of at least one of the battery cell structures are connected through a conductive connection portion.

10. The battery module according to claim 9, characterized in that: A heat dissipation structure is also provided between two adjacent battery core structures, and the heat dissipation structure is used to cool the two adjacent battery core structures.

11. The battery module according to claim 10, characterized in that: Each of the heat dissipation structures comprises a liquid cooling plate, each of the liquid cooling plates has a refrigerant flow channel formed therein, the liquid inlets of the refrigerant flow channels of the plurality of liquid cooling plates are connected, and the liquid outlets of the refrigerant flow channels of the plurality of liquid cooling plates are connected; or, Each of the heat dissipation structures includes a liquid cooling plate, each of which has a refrigerant flow channel formed therein. Among the multiple liquid cooling plates, the liquid inlet of the refrigerant flow channel of one liquid cooling plate is connected to the liquid outlet of the refrigerant flow channel of another liquid cooling plate.

12. The battery module according to claim 10, characterized in that: Two heat dissipation surfaces of two adjacent battery core structures that are arranged opposite to each other are both provided with elastic heat-conducting members, and the two elastic heat-conducting members are both in contact with the heat dissipation structure.

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