WO2025256554A1 - 电池模组及用电设备 - Google Patents

电池模组及用电设备

Info

Publication number
WO2025256554A1
WO2025256554A1 PCT/CN2025/100418 CN2025100418W WO2025256554A1 WO 2025256554 A1 WO2025256554 A1 WO 2025256554A1 CN 2025100418 W CN2025100418 W CN 2025100418W WO 2025256554 A1 WO2025256554 A1 WO 2025256554A1
Authority
WO
WIPO (PCT)
Prior art keywords
along
conductive element
battery module
adjacent
width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/100418
Other languages
English (en)
French (fr)
Inventor
魏艳彬
郝春林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Svolt Energy Technology Co Ltd
Original Assignee
Svolt Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Svolt Energy Technology Co Ltd filed Critical Svolt Energy Technology Co Ltd
Publication of WO2025256554A1 publication Critical patent/WO2025256554A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application relates to the field of battery equipment technology, specifically to a battery module and an electrical device.
  • a battery module is an integrated unit of battery cells, which are connected together by conductive elements. Due to the large number of conductive elements, a dedicated bracket is usually required to facilitate the positioning and installation of these elements.
  • the battery cell, conductive components, and dedicated brackets for the conductive components require a high degree of fit to ensure the installation accuracy after the battery module is assembled.
  • the fit between the three cannot be well achieved, resulting in low installation accuracy and easy occurrence of fit errors or even misalignment.
  • this application provides a battery module and electrical equipment to solve the problem of low installation accuracy of battery cells, conductive elements and dedicated brackets for conductive elements.
  • this application provides a battery module, including:
  • Multiple battery cells are stacked along a first direction, and the end face of the battery cells along a second direction forms an electrode post, wherein the second direction is perpendicular to the first direction;
  • the mounting bracket is connected to the end face of multiple cells along the second direction.
  • the mounting bracket has an opening in the area corresponding to the pole to allow the pole to pass through the opening.
  • the mounting bracket is partially recessed to form a conductive element assembly groove, and the opening is located within the conductive element assembly groove.
  • a conductive element is installed in a conductive element assembly slot, and the conductive element is adapted to connect at least two adjacent poles.
  • the length of the conductive element assembly slot along the third direction is L, and satisfies: L1 ⁇ L ⁇ h, where L1 is the length of the conductive element along the third direction, and h is the height of the battery cell along the third direction, which is perpendicular to both the first and second directions; a single window portion is adapted to correspond simultaneously to two adjacent electrode posts; the width of the conductive element assembly slot corresponding to the single window portion along the first direction is W, and satisfies: W1 ⁇ W ⁇ 2 ⁇ (t+d);
  • W1 is the width of the conductive element along the first direction
  • t is the thickness of a single cell along the first direction
  • d is the design gap between two adjacent cells, and satisfies: 0 ⁇ d ⁇ 10% ⁇ t.
  • the opening can accommodate two terminals, facilitates alignment between the mounting bracket and the battery cells, and ensures that when the mounting bracket has multiple conductive component assembly slots, the continuously arranged conductive component assembly slots are aligned with two adjacent battery cells, preventing misalignment and reducing the occurrence of situations where the opening cannot be aligned with two adjacent terminals due to continuous stacking of battery cells, thereby improving assembly accuracy.
  • the mounting bracket is provided with a circuit board mounting portion in a region located on one side of the window portion along a third direction;
  • the battery module also includes a circuit board, which is mounted on the circuit board mounting section and spaced apart from the conductive components along a third direction.
  • the length L1 of the conductive element along the third direction satisfies: a ⁇ L1 ⁇ h-b-c, where a is the length of the electrode post along the third direction, h is the height of the battery cell along the third direction, b is the width of the circuit board along the third direction, and c is the assembly gap between the circuit board and the conductive element along the third direction.
  • a single conductive element is simultaneously connected to two adjacent terminals, and the width W1 of the conductive element along the first direction satisfies: e+t+d ⁇ W1 ⁇ 2 ⁇ (t+d)-f;
  • e is the width of the electrode post along the first direction
  • t is the thickness of a single cell along the first direction
  • d is the design gap between two adjacent cells
  • f is the design gap between two adjacent conductive elements along the first direction, and satisfies: 0 ⁇ d ⁇ 10% ⁇ t.
  • the width W1 of the conductive element along the first direction By limiting the width W1 of the conductive element along the first direction to be at least greater than or equal to the sum of the thickness of a cell along the first direction, the width of an electrode along the first direction, and the designed gap between two adjacent conductive elements along the first direction, it is ensured that the conductive element, after assembly, can simultaneously contact two electrodes and at least cover the area where the two electrodes are located. This avoids the situation where the width of the conductive element along the first direction is too small, resulting in incomplete and poor contact with the electrodes.
  • width W1 of the conductive element 3 along the first direction is less than or equal to the difference between the actual width of two adjacent cells and the designed gap between two adjacent conductive elements along the first direction, interference between adjacent conductive elements is avoided when multiple conductive elements are continuously arranged along the first direction, providing sufficient safety gaps and facilitating the continuous arrangement of multiple conductive elements.
  • a single window is adapted to correspond simultaneously to two sets of pole posts, wherein a single set of pole posts includes two adjacent pole posts connected in parallel; and a conductive element mounting slot corresponding to the window is adapted to mount a conductive element.
  • a single conductive element can connect to four terminals simultaneously. By aligning a single window with two sets of terminals simultaneously, two parallel cells can share a single window, facilitating the arrangement of conductive elements.
  • a single window is adapted to correspond to two sets of pole posts simultaneously, wherein a single set of pole posts includes two adjacent pole posts connected in parallel; the mounting bracket is also provided with a partition between adjacent sets of pole posts, the partition being adapted to physically block the pole posts of the two sets of pole posts.
  • a single conductive element can connect four terminals simultaneously. By aligning a single window with two sets of terminals simultaneously, each of the two parallel cells can utilize a single window. This creates a physical barrier between the terminals of the two sets of terminals, with the terminals within each window connected in parallel to form a terminal group. The two sets of terminal groups are then connected in series. This arrangement effectively isolates the two sets of terminal groups, preventing short circuits between different terminal groups and improving safety performance.
  • a single window is adapted to correspond to four poles simultaneously, and the mounting bracket is also provided with a partition between adjacent poles, the partition being adapted to physically block adjacent poles.
  • a single conductive element can connect to four terminals simultaneously. By dividing the same conductive element assembly slot area into four openings, each opening corresponds to one terminal, enabling the arrangement of multiple openings in a single parallel cell. This creates a partition between adjacent terminals, facilitating physical isolation between them, preventing short circuits between different terminals, and improving safety performance.
  • the width of the separator along the first direction is g, and satisfies: 0 ⁇ g ⁇ d + t - e, where d is the design gap between two adjacent cells, t is the thickness of a single cell along the first direction, and e is the width of the electrode post along the first direction.
  • this application also provides an electrical device, including: a battery module as described above.
  • the battery module includes the battery module and has the same effect as the battery module, it will not be elaborated on here.
  • FIG. 1 is a schematic diagram of the battery module of this application.
  • Figure 2 is an exploded view of the mounting bracket, conductive components and circuit board of this application;
  • FIG. 3 is a schematic diagram of the mounting bracket of this application.
  • Figure 4 is a magnified view of a portion of Figure 3;
  • Figure 5 is a three-dimensional schematic diagram of the conductive element of this application.
  • Figure 6 is a front view of the conductive element of this application.
  • Figure 7 is a schematic diagram of the end face of the battery cell with terminals provided in this application.
  • Figure 8 is a partially enlarged view of the battery module of this application from a frontal perspective
  • Figure 9 is a schematic diagram of the battery module of this application from a frontal view, showing the removal of a conductive element
  • Figure 10 is an enlarged view of point A in Figure 9;
  • Figure 11 is a partial enlarged view of the mounting bracket of this application from a frontal perspective
  • Figure 12 is a schematic diagram of the installation state of the first modified example of the mounting bracket of this application.
  • Figure 13 is a partial schematic diagram of the first modified example of the mounting bracket of this application.
  • Figure 14 is a schematic diagram of the installation state of the second modified example of the mounting bracket of this application.
  • Figure 15 is a partial schematic diagram of a second modified example of the mounting bracket of this application.
  • Figure 16 is a schematic diagram of the installation state of the third modified example of the mounting bracket of this application.
  • Figure 17 is a partial schematic diagram of the third modification of the mounting bracket of this application.
  • connection should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components.
  • connection should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components.
  • a battery module comprising:
  • Multiple battery cells 1 are stacked along a first direction, and a terminal post 11 is formed on the end face of the battery cell 1 along a second direction, wherein the second direction is perpendicular to the first direction;
  • Mounting bracket 2 is connected to the end face of multiple battery cells 1 along the second direction.
  • Mounting bracket 2 has a window 23 in the area corresponding to the pole post 11 so that the pole post 11 can pass through the window 23.
  • Mounting bracket 2 is partially recessed to form a conductive element assembly groove 27, and the window 23 is located within the conductive element assembly groove 27.
  • the conductive element 3 is installed in the conductive element assembly slot 27, and the conductive element 3 is adapted to connect at least two adjacent pole posts 11.
  • the length of the conductive element assembly groove 27 along the third direction is L, and satisfies: L1 ⁇ L ⁇ h, where L1 is the length of the conductive element 3 along the third direction, and h is the height of the battery cell 1 along the third direction.
  • the third direction is perpendicular to both the first direction and the second direction.
  • the battery module provided in the embodiments of this application forms a conductive element assembly groove 27 by partially recessing the mounting bracket 2.
  • the window portion 23 is located within the conductive element assembly groove 27, and the length of the conductive element assembly groove 27 along the third direction is limited to L to satisfy: L1 ⁇ L ⁇ h. This allows the conductive element assembly groove 27 to properly accommodate the conductive element 3, and the conductive element assembly groove 27 will not exceed the height of the cell 1 along the third direction, thereby ensuring the installation accuracy after the battery module is assembled.
  • the mounting bracket 2 has a window 23 in the area corresponding to the pole 11 so that the pole 11 can pass through the window 23. Furthermore, the opening area of the window 23 is smaller than the area of the conductive element 3, thereby ensuring that the window 23 can be completely covered by the conductive element 3.
  • the battery cell 1 can specifically be a blade battery cell, with multiple blade batteries stacked along a first direction.
  • the first direction can be the direction perpendicular to the large surface of the blade battery cell, i.e., the thickness direction.
  • a terminal post 11 is formed on the end face of the blade battery cell along a second direction, i.e., a terminal post 11 is formed on the end face of the blade battery cell along the length direction.
  • the mounting bracket 2 there is a strong correlation between the dimensions of the mounting bracket 2 and the dimensions of the battery cell 1.
  • the fit between the mounting bracket 2, the battery cell 1, and the conductive components 3 can be made more precise. This ensures a compact structure after the battery module is assembled and avoids short circuits between the conductive components 3, thus improving safety performance.
  • the mounting bracket 2 can be designed more precisely, improving aesthetics, increasing processing efficiency, and reducing manufacturing costs.
  • the mounting bracket 2 is provided with a conductive element mounting post 21 within the conductive element assembly slot 27.
  • the conductive element 3 is provided with a conductive element mounting hole 33.
  • the conductive element mounting post 21 can be a hot-riveted post.
  • the conductive element 3 has a conductive portion 31 for each terminal post 11 of each cell 1. Taking a single conductive element 3 corresponding to two terminals 11 as an example, the conductive element 3 has two conductive portions 31, and the area between the two conductive portions 31 is recessed or protruded to form a positioning and mating portion 32.
  • the mounting bracket 2 forms two conductive element mounting posts 21 for each conductive element 3.
  • the conductive element 3 is provided with two conductive element mounting holes 33.
  • the mounting bracket 2 forms a conductive element positioning part 22 in the area between the two conductive element mounting posts 21.
  • the conductive element positioning part 22 corresponds to the positioning mating part 32 of the conductive element 3 and is suitable for limiting the conductive element 3.
  • the positioning and fitting part 32 of the conductive element 3 is a support rib
  • the corresponding positioning part 22 of the conductive element is a groove that matches the shape of the support rib.
  • the mounting bracket 2 has conductive element positioning parts 22 on both the upper and lower sides of the window 23, which facilitates the positioning of the conductive element 3 and prevents uneven force.
  • the mounting bracket 2 is provided with a conductive element support 26 within the range of the conductive element assembly slot 27.
  • the conductive element support 26 is adapted to support the conductive element 3, on the one hand preventing the conductive element 3 from falling in the height direction, and on the other hand restricting the conductive element 3 from moving in the second direction toward the direction closer to the battery cell 1.
  • the electrode post 11 extends through the window 23 and is connected to the conductive element 3.
  • the conductive part 31 of the conductive element 3 is provided with an assembly through hole 34, and the electrode post 11 is provided with an electrode post assembly position 12.
  • the mounting bracket 2 is provided with a circuit board mounting portion 28 in a region located on one side of the window portion 23 along a third direction;
  • the battery module also includes a circuit board 4, which is mounted on the circuit board mounting part 28 and spaced apart from the conductive element 3 along a third direction.
  • the mounting bracket 2 has a circuit board mounting section 28 for placing the acquisition element of the circuit board 4.
  • the acquisition element is connected to the pole 11 to facilitate signal acquisition.
  • the circuit board 4 has an explosion-proof valve clearance hole 25, and the end face of the battery cell 1 along the second direction also has an explosion-proof valve 13.
  • the opening area of the explosion-proof valve clearance hole 25 is larger than the area of the explosion-proof valve 13.
  • the circuit board positioning post 24 can specifically be a hot-riveting post.
  • the mounting bracket 2 in this embodiment can be manufactured by vacuum forming or injection molding.
  • Vacuum forming materials include thin plastics such as PC and PP, while injection molding materials include plastics such as PC+ABS, PPE, and PA66+GF20.
  • the length L1 of the conductive element 3 along the third direction satisfies: a ⁇ L1 ⁇ h-b-c, where a is the length of the electrode post 11 along the third direction, h is the height of the cell 1 along the third direction, b is the width of the circuit board 4 along the third direction, and c is the assembly gap between the circuit board 4 and the conductive element 3 along the third direction.
  • the length L1 of the conductive element 3 along the third direction is set to satisfy: a ⁇ L1 ⁇ h-b-c. This ensures that the conductive element 3 completely covers the terminal 11 and makes good contact with it, while preventing the circuit board 4 from interfering with the conductive element 3 along the third direction. This ensures that the conductive element has sufficient contact area, making the overall structure of the battery module more compact and ensuring installation accuracy.
  • h-b-c ⁇ a ensures that after the circuit board 4 is assembled with the end face of the cell 1 along the second direction, it can provide good clearance for the arrangement of the terminal 11, making the division of the end face area of the cell 1 along the second direction clearer. This also ensures that the conductive function and the detection function do not interfere with each other, reducing the occurrence of short circuits.
  • a single window portion 23 is adapted to simultaneously correspond to two adjacently arranged pole posts 11; the width of the conductive element mounting groove 27 corresponding to the single window portion 23 along the first direction is W, and satisfies: W1 ⁇ W ⁇ 2 ⁇ (t+d);
  • W1 is the width of the conductive element 3 along the first direction
  • t is the thickness of a single cell 1 along the first direction
  • d is the design gap between two adjacent cells 1, and satisfies: 0 ⁇ d ⁇ 10% ⁇ t.
  • the width W of the conductive element assembly slot 27 along the first direction is less than or equal to the actual width of two adjacent battery cells 1.
  • the width W1 of the conductive element 3 along the first direction is set to 27.5 mm; and the width W of the conductive element assembly groove 27 along the first direction is set to 28.5 mm.
  • the thickness t of a single cell 1 along the first direction is selected to be 16.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, that is, d needs to satisfy 0 mm ⁇ d ⁇ 1.65 mm, as a counterexample, in Comparative Example 1, the design gap d between two adjacent cells 1 is selected to be 3 mm.
  • the width W1 of the conductive element 3 along the first direction is set to 29 mm; and the width W of the conductive element mounting groove 27 along the first direction is set to 33 mm; the thickness t of a single cell 1 along the first direction is selected to be 15.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected to be 0 mm. At this time, since W should satisfy: W1 ⁇ W ⁇ 2 ⁇ (t+d), while the design result of 2 ⁇ (t+d) in Comparative Example 1 is...
  • the width of the conductive component assembly slot 27 along the first direction is 33mm, which is greater than the design result of 2 ⁇ (t+d)31mm, i.e. W>2 ⁇ (t+d).
  • the mounting bracket 2 will not have a partition 29, and all the conductive component assembly slots 27 of the mounting bracket 2 will disappear, forming a large opening in the middle of the mounting bracket 2.
  • the conductive components not be positioned, but the mounting bracket 2 also cannot be positioned and installed on the battery cell.
  • there is no physical barrier between the battery cell terminals and terminal groups which will cause short circuits between the terminals and terminal groups, posing a safety problem.
  • a single conductive element 3 is simultaneously connected to two adjacently arranged pole posts 11, and the width W1 of the conductive element 3 along the first direction satisfies: e+t+d ⁇ W1 ⁇ 2 ⁇ (t+d)-f;
  • the width W1 of the conductive element 3 along the first direction is at least greater than or equal to the sum of the thickness of a cell 1 along the first direction, the width of an electrode post 11 along the first direction, and the designed gap between two adjacent conductive elements 3 along the first direction, it is ensured that the conductive element 3, after assembly, can simultaneously contact the two electrodes 11 and at least cover the area where the two electrodes 11 are located. This avoids the situation where the width of the conductive element 3 along the first direction is too small, resulting in incomplete and good contact with the electrodes 11.
  • the number of openings in the opening section 23 is related to the parallel connection form and number of battery cells.
  • a single opening section 23 is suitable for two pole posts 11 to pass through, and a single conductive element 3 is suitable for connecting two adjacent pole posts 11.
  • the width W1 of the conductive element 3 along the first direction is set to 29.9 mm; the thickness t of a single cell 1 along the first direction is selected to be 16.5 mm; since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected to be 0.4 mm; the design gap f between two adjacent conductive elements 3 along the first direction is selected to be 3.5 mm; the width e of the pole post 11 along the first direction is selected to be 11 mm; the design result of e+t+d is 27.9 mm; the design result of 2 ⁇ (t+d)-f is 30.3 mm; so that W1 satisfies e+t+d ⁇ W1 ⁇ 2 ⁇ (t+d)-f, that is, 27.9 mm ⁇ 29.9 mm ⁇ 30.3 mm.
  • Example 5 Using the design parameters provided in Example 5, it is ensured that the conductive element 3 can be smoothly installed into the conductive element assembly slot 27, and that the conductive element 3 simultaneously contacts and covers the areas where the two terminals are located, guaranteeing the effective contact area and welding area between the conductive element 3 and the terminals. Simultaneously, interference between adjacent conductive elements 3 is avoided, leaving sufficient safety gaps to facilitate the continuous installation of multiple conductive elements, preventing short circuits and other safety accidents, enhancing battery safety, and ensuring safety during battery production.
  • Embodiments 6, 7, and 8 all can ensure that the conductive element 3 can be smoothly installed into the conductive element assembly slot 27, and that the conductive element 3 simultaneously contacts and covers the areas where the two terminals are located, ensuring the effective contact area and welding area between the conductive element 3 and the terminals. Simultaneously, interference between adjacent conductive elements 3 can be avoided, leaving sufficient safety gaps to facilitate the continuous installation of multiple conductive elements, preventing short circuits and other safety accidents, enhancing battery safety, and ensuring safety during battery production. Further details will not be elaborated here.
  • the width W1 of the conductive element 3 along the first direction is set to 27.5 mm; the thickness t of a single cell 1 along the first direction is selected to be 16.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected to be 0.3 mm; the design gap f between two adjacent conductive elements 3 along the first direction is selected to be 3.5 mm; the width e of the pole post 11 along the first direction is selected to be 11 mm.
  • the design result of e+t+d is 27.8 mm, and the design result of 2 ⁇ (t+d)-f is 30.1 mm.
  • the width W1 of the conductive element 3 along the first direction is set to 29.5 mm; the thickness t of a single cell 1 along the first direction is selected to be 15.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected to be 0 mm; the design gap f between two adjacent conductive elements 3 along the first direction is selected to be 3 mm; the width e of the pole post 11 along the first direction is selected to be 10 mm.
  • the design result of e+t+d is 25.5 mm, and the design result of 2 ⁇ (t+d)-f is 28 mm.
  • f is optionally related to parameters such as altitude and cell voltage. Its specific value can be obtained by looking up a table and further calculation during the design stage, and will not be elaborated here.
  • a single window portion 23 is adapted to correspond to two sets of pole posts simultaneously, wherein a single pole post set includes two adjacent and parallel pole posts 11; and a conductive element mounting slot 27 corresponding to the window portion 23 is adapted to install a conductive element 3.
  • a single conductive element 3 can be connected to four terminals 11 simultaneously.
  • a single window portion 23 correspond to two sets of terminals simultaneously, it is possible to have two parallel cells share a single window, which facilitates the arrangement of the conductive element 3.
  • a single window portion 23 is adapted to correspond to two sets of pole posts simultaneously, wherein a single set of pole posts includes two adjacent and parallel pole posts 11; the mounting bracket 2 is also provided with a partition portion 29 between adjacent sets of pole posts, the partition portion 29 being adapted to physically block the pole posts 11 of the two sets of pole posts.
  • a single conductive element 3 can simultaneously connect four terminals 11.
  • each of the two parallel cells can adopt a window configuration.
  • the separator 29 then physically isolates the terminals 11 of the two sets of terminals. Terminals 11 within each window are connected in parallel to form a terminal set, and then the two sets of terminals are connected in series. This arrangement effectively isolates the two sets of terminals, preventing short circuits between different terminal sets and improving safety performance.
  • a single window portion 23 is adapted to correspond to four pole posts 11 simultaneously, and the mounting bracket 2 is also provided with a partition portion 29 between adjacent pole posts 11, the partition portion 29 being adapted to form a physical barrier to adjacent pole posts 11.
  • a single conductive element 3 can connect to four terminals 11 simultaneously.
  • each opening 23 corresponds to one terminal 11, thereby enabling the arrangement of multiple openings in a single parallel cell. This creates a separation 29 between adjacent terminals 11, facilitating physical isolation between adjacent terminals 11, preventing short circuits between different terminals 11, and improving safety performance.
  • the width of the partition 29 along the first direction is g, and satisfies: 0 ⁇ g ⁇ d + t - e, where d is the design gap between two adjacent cells 1, t is the thickness of a single cell 1 along the first direction, and e is the width of the electrode post 11 along the first direction.
  • the width g of the separator 29 along the first direction is set to 4.5 mm; the thickness t of a single cell 1 along the first direction is selected to be 16.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected to be 0.4 mm; and the width e of the terminal post 11 along the first direction is selected to be 11 mm.
  • the design result of d + t - e is 5.9 mm, which satisfies 0 ⁇ g ⁇ d + t - e. This ensures that there is a separator 29 between the terminal post and the terminal post group, which can prevent short circuits between the terminal post and the terminal post group and improve the safety of the battery and the battery manufacturing process.
  • Examples 10, 11, and 12 all similarly ensure that there is a separator 29 between the terminals and the terminal assembly, preventing short circuits between the terminals and the terminal assembly and improving the safety of the battery and its manufacturing process. Further details will not be elaborated here.
  • the width g of the separator 29 along the first direction is set to 6 mm; the thickness t of a single cell 1 along the first direction is selected as 16.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected as 0.3 mm; and the width e of the electrode post 11 along the first direction is selected as 11 mm.
  • the design result of d + t - e is 5.8 mm, which cannot satisfy 0 ⁇ g ⁇ d + t - e. This will cause the separator 29 to be too large, which will not only affect the assembly of conductive components, but also make it impossible to install the mounting bracket, resulting in design failure.
  • the width g of the separator 29 along the first direction is set to 6.5 mm; the thickness t of a single cell 1 along the first direction is selected as 15.5 mm. Since the design gap d between two adjacent cells 1 needs to satisfy 0 ⁇ d ⁇ 10% ⁇ t, the design gap d between two adjacent cells 1 is selected as 0 mm; and the width e of the electrode post 11 along the first direction is selected as 10 mm.
  • the design result of d + t - e is 5.5 mm, which cannot satisfy 0 ⁇ g ⁇ d + t - e. This will cause the separator 29 to be too large, which will not only affect the assembly of conductive components, but also make it impossible to install the mounting bracket, resulting in design failure.
  • another aspect provides an electrical device including the battery module as described above.
  • the electrical equipment provided in the embodiments of this application by associating the size of the mounting bracket 2 with the size of the battery cell 1, enables a more precise fit between the mounting bracket 2, the battery cell 1, and the conductive element 3, ensuring a compact structure after the battery module is assembled, and avoiding short circuits between the conductive elements 3, thereby improving safety performance.

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Abstract

本申请涉及电池设备技术领域，公开了一种电池模组及用电设备，电池模组包括：多个电芯；安装架，同时与多个电芯沿第二方向的端面相连接，安装架对应极柱的区域开设有开窗部，以使极柱由开窗部穿出；安装架局部凹陷形成导电元件装配槽，开窗部位于导电元件装配槽范围内；导电元件，安装于导电元件装配槽内，导电元件适于连接至少两个相邻设置的极柱；导电元件装配槽沿第三方向的长度为L，且满足：L1≤L≤h，其中，L1为导电元件沿第三方向的长度，h为电芯沿第三方向的高度。本申请提供的电池模组，通过将安装架的尺寸与电芯的尺寸进行关联，能够使安装架与电芯及导电元件三者之间的配合更加精准，保证电池模组装配完成后的结构紧凑。

Description

电池模组及用电设备
相关申请的交叉引用
本申请要求在2024年6月11日提交中国专利局、申请号为202410742087.3、发明名称为“电池模组及用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池设备技术领域，具体涉及一种电池模组及用电设备。
背景技术
随着动力电池的相关技术在不断的创新和发展，电池成组技术的研究也在不断深入。电池模组是电芯的集成体，通过导电元件将这些电芯连接起来，由于导电元件数量较多，为了方便导电元件的定位安装，通常需要设置专用支架。
然而，电芯、导电元件及导电元件的专用支架需要较高的配合度，才能保证电池模组成组后的安装精度，相关技术中，并不能够很好的实现三者的配合，导致安装精度较低，容易出现配合误差甚至错位的情况。
发明内容
有鉴于此，本申请提供了一种电池模组及用电设备，以解决电芯、导电元件及导电元件的专用支架安装精度低的问题。
第一方面，本申请提供了一种电池模组，包括：
多个电芯，沿第一方向堆叠设置，电芯沿第二方向的端面形成有极柱，其中，第二方向垂直于第一方向；
安装架，同时与多个电芯沿第二方向的端面相连接，安装架对应极柱的区域开设有开窗部，以使极柱由开窗部穿出；安装架局部凹陷形成导电元件装配槽，开窗部位于导电元件装配槽范围内；
导电元件，安装于导电元件装配槽内，导电元件适于连接至少两个相邻设置的极柱；
导电元件装配槽沿第三方向的长度为L，且满足：L1≤L≤h，其中，L1为导电元件沿第三方向的长度，h为电芯沿第三方向的高度，第三方向同时垂直于第一方向与第二方向；单个开窗部适于同时与两个相邻设置的极柱相对应；与单个开窗部相对应的导电元件装配槽沿第一方向的宽度为W，且满足：
W1≤W≤2×(t+d)；
其中，W1为导电元件沿第一方向的宽度，t为单个电芯沿第一方向的厚度，d为相邻两个电芯之间的设计间隙，且满足：0≤d≤10％·t。
有益效果：安装架的尺寸设计与电芯的尺寸间具有强相关的关联关系。通过将安装架的尺寸与电芯的尺寸进行关联，能够使安装架与电芯及导电元件三者之间的配合更加精准，保证电池模组装配完成后的结构紧凑，且避免导电元件之间发生短路的情况出现，提高安全性能。通过限制导电元件装配槽沿第一方向的宽度W满足：W1≤W≤2×(t+d)；从而保证导电元件能够顺利安装到导电元件装配槽内，并且导电元件装配槽的宽度小于等于相邻两个电芯的实际宽度，从而在保证开窗部能够容纳两个极柱的基础上，方便安装架与电芯进行对正，并且在安装架具有多个导电元件装配槽时，能够满足连续设置的导电元件装配槽均与相邻两个电芯进行对正设置，避免发生错位，减少因电芯的连续堆叠导致的开窗部无法与相邻两个极柱进行对正的情况发生，提高装配精度。
在一种可选的实施方式中，安装架沿第三方向位于开窗部其中一侧的区域设置有线路板安装部；
电池模组还包括线路板，线路板安装于线路板安装部，并与导电元件沿第三方向间隔设置。
在一种可选的实施方式中，导电元件沿第三方向的长度L1满足：a≤L1≤h-b-c，其中，a为极柱沿第三方向的长度，h为电芯沿第三方向的高度，b为线路板沿第三方向的宽度，c为线路板与导电元件沿第三方向的装配间隙。
有益效果：通过设置导电元件沿第三方向的长度L1满足：a≤L1≤h-b-c，从而能够在保证导电元件完全遮盖极柱并与极柱形成良好接触的基础上，防止线路板沿第三方向对导电元件造成干涉，保证导电元件具有足够接触面积，使电池模组整体结构更加紧凑，保证安装精度。同时，h-b-c≥a，保证线路板与电芯沿第二方向的端面进行装配后，能够很好的为极柱的布置位置形成让位空间，使电芯沿第二方向的端面区域划分更加清晰，导电功能与检测功能之间互不干涉，减少短路的情况发生。
在一种可选的实施方式中，单个导电元件同时与两个相邻设置的极柱相连接，导电元件沿第一方向的宽度W1满足：
e+t+d≤W1≤2×(t+d)-f；
其中，e为极柱沿第一方向的宽度，t为单个电芯沿第一方向的厚度，d为相邻两个电芯之间的设计间隙，f为相邻两个导电元件沿第一方向之间的设计间隙，且满足：0≤d≤10％·t。
有益效果：通过限制导电元件沿第一方向的宽度W1至少大于等于一个电芯沿第一方向的厚度与一个极柱沿第一方向的宽度以及相邻两个导电元件沿第一方向之间的设计间隙之和，从而在导电元件装配后，能够保证与两个极柱同时接触，且至少覆盖两个极柱所在的区域，避免导电元件沿第一方向的宽度过小而导致的无法完全与极柱良好接触的情况发生。同时，通过限制导电元件3沿第一方向的宽度W1小于等于相邻两个电芯的实际宽度与相邻两个导电元件沿第一方向之间的设计间隙的差值，从而在多个导电元件沿第一方向连续设置时，避免相邻导电元件之间的干涉，留出足够的安全间隙，方便多个导电元件的连续设置。
在一种可选的实施方式中，单个开窗部适于同时与两组极柱组相对应，其中，单个极柱组包括相邻且并联连接的两个极柱；与该开窗部相对应的导电元件装配槽适于安装一个导电元件。
有益效果：单个导电元件可以为同时连接四个极柱。通过将单个开窗部同时与两组极柱组相对应，能够实现两并电芯共同采用一个开窗的形式，方便导电元件的布置。
在一种可选的实施方式中，单个开窗部适于同时与两组极柱组相对应，其中，单个极柱组包括相邻且并联连接的两个极柱；安装架位于相邻极柱组之间还设置有分隔部，分隔部适于对两组极柱组的极柱形成物理阻隔。
有益效果：单个导电元件可以为同时连接四个极柱。通过将单个开窗部同时与两组极柱组相对应，能够实现两并电芯分别采用一个开窗的形式，从而由分隔部对两组极柱组的极柱形成物理阻隔，每个开窗内极柱进行并联以形成极柱组，随后再将两组极柱组进行串联。采用该种布置形式，能够很好的对两组极柱组进行物理阻隔，避免不同极柱组之间的短路情况，提高安全性能。
在一种可选的实施方式中，单个开窗部适于同时与四个极柱相对应，安装架位于相邻极柱之间还设置有分隔部，分隔部适于对相邻的极柱形成物理阻隔。
有益效果：单个导电元件可以为同时连接四个极柱。通过将同一个导电元件装配槽区域划分为四个开窗部，方便每个开窗部与一个极柱相对应，从而能够实现单并电芯采用多个开窗进行布置的形式，使相邻极柱之间形成分隔部，方便对相邻的极柱形成物理阻隔，避免不同极柱之间的短路情况，提高安全性能。
在一种可选的实施方式中，分隔部沿第一方向的宽度为g，且满足：0＜g＜d+t-e，其中，d为相邻两个电芯之间的设计间隙，t为单个电芯沿第一方向的厚度，e为极柱沿第一方向的宽度。
有益效果：通过合理设置分隔部沿第一方向的宽度，保证处于并联连接的极柱之间能够具有物理阻隔，避免不同极柱之间的短路情况，提高安全性能。同时避免分隔部尺寸过大，造成物料浪费。
第二方面，本申请还提供了一种用电设备，包括：如上述的电池模组。
因为电池模组包括电池模组，具有与电池模组相同的效果，在此不再赘述。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请电池模组的示意图；
图2为本申请安装架、导电元件及线路板的分解示意图；
图3为本申请安装架的示意图；
图4为图3的局部放大图；
图5为本申请导电元件的立体示意图；
图6为本申请导电元件的正视图；
图7为本申请设置有极柱的电芯端面的示意图；
图8为本申请电池模组的正视视角的局部放大图；
图9为本申请电池模组的正视视角的去除一块导电元件的示意图；
图10为图9的A处放大图；
图11为本申请安装架的正视视角的局部放大图；
图12为本申请安装架的第一种变形例的安装状态示意图；
图13为本申请安装架的第一种变形例的局部示意图；
图14为本申请安装架的第二种变形例的安装状态示意图；
图15为本申请安装架的第二种变形例的局部示意图；
图16为本申请安装架的第三种变形例的安装状态示意图；
图17为本申请安装架的第三种变形例的局部示意图。
附图标记说明：
1、电芯；11、极柱；12、极柱装配位；13、防爆阀；
2、安装架；21、导电元件安装柱；22、导电元件定位部；23、开窗部；24、线路板定位
柱；25、防爆阀避让孔；26、导电元件承托部；27、导电元件装配槽；28、线路板安装部；29、分隔部；
3、导电元件；31、导电部；32、定位配合部；33、导电元件安装孔；34、装配过孔；
4、线路板；41、线路板定位孔。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“垂直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
下面结合图1至图17，描述本申请的实施例。
根据本申请的实施例，一方面，提供了一种电池模组，包括：
多个电芯1，沿第一方向堆叠设置，电芯1沿第二方向的端面形成有极柱11，其中，第二方向垂直于第一方向；
安装架2，同时与多个电芯1沿第二方向的端面相连接，安装架2对应极柱11的区域开设有开窗部23，以使极柱11由开窗部23穿出；安装架2局部凹陷形成导电元件装配槽27，开窗部23位于导电元件装配槽27范围内；
导电元件3，安装于导电元件装配槽27内，导电元件3适于连接至少两个相邻设置的极柱11；
导电元件装配槽27沿第三方向的长度为L，且满足：L1≤L≤h，其中，L1为导电元件3沿第三方向的长度，h为电芯1沿第三方向的高度，第三方向同时垂直于第一方向与第二方向。
本申请的实施例提供的电池模组，通过使安装架2局部凹陷形成导电元件装配槽27，开窗部23位于导电元件装配槽27范围内，并限定导电元件装配槽27沿第三方向的长度为L满足：L1≤L≤h，从而使导电元件装配槽27能够很好的容纳导电元件3，并且导电元件装配槽27不会超出电芯1沿第三方向的高度，从而保证电池模组成组后的安装精度。
安装架2对应极柱11的区域开设有开窗部23，以使极柱11由开窗部23穿出，并且进一步的，开窗部23的开窗面积小于导电元件3的面积，从而保证开窗部23能够被导电元件3完全覆盖。
本实施例的电芯1具体可以为刀片电芯，多个刀片电芯沿第一方向堆叠设置，其中，第一方向可以为刀片电芯垂直于大面的方向，也即厚度方向。刀片电芯沿第二方向的端面形成有极柱11，也即刀片电芯沿长度方向的端面形成有极柱11。
本实施例中，安装架2的尺寸设计与电芯1的尺寸间具有强相关的关联关系。通过将安装架2的尺寸与电芯1的尺寸进行关联，能够使安装架2与电芯1及导电元件3三者之间的配合更加精准，保证电池模组装配完成后的结构紧凑，且避免导电元件3之间发生短路的情况出现，提高安全性能。同时可有效精准设计安装架2，提升设计美观性，提升加工制作效率并降低制造成本。
结合图2、图3、图4、图5所示，安装架2位于导电元件装配槽27的范围内设置有导电元件安装柱21，对应的，导电元件3上开设有导电元件安装孔33，通过使导电元件安装孔33与导电元件安装柱21进行配合，能够方便将导电元件3固定在安装架2上，并确保导电元件3位于导电元件装配槽27内。
可选的，导电元件安装柱21具体可以为热铆柱。
本实施例中，导电元件3对应每个电芯1的极柱11均形成有导电部31，以单个导电元件3对应两个极柱11为例，导电元件3具有两个导电部31，两个导电部31之间的区域凹陷或凸起形成有定位配合部32。
此外，为了便于导电元件3的固定，安装架2对应每个导电元件3形成有两个导电元件安装柱21，对应的，导电元件3上设置有两个导电元件安装孔33，安装架2位于两个导电元件安装柱21之间的区域形成有导电元件定位部22，导电元件定位部22与导电元件3的定位配合部32相对应，适于对导电元件3进行限位。
具体地，导电元件3的定位配合部32为支撑筋，对应的导电元件定位部22为与支撑筋的形状相适配的凹槽。
结合图4所示，安装架2位于开窗部23的上下两侧的位置均形成有导电元件定位部22，从而方便对导电元件3进行定位，防止受力不均。
额外的，安装架2位于导电元件装配槽27的范围内还设置有导电元件承托部26，导电元件承托部26适于对导电元件3起到承托作用，一方面防止导电元件3沿高度方向下落，另一方面能够限制导电元件3沿第二方向朝向靠近电芯1的方向移动。
极柱11由开窗部23穿出，并与导电元件3相连接，导电元件3的导电部31上开设有装配过孔34，极柱11上形成有极柱装配位12，通过设置导电连接件穿过装配过孔34，并与极柱装配位12相连接，从而方便将极柱11与导电元件3进行固定，以便后续将电能传输至外部。
在一些实施例中，结合图3所示，安装架2沿第三方向位于开窗部23其中一侧的区域设置有线路板安装部28；
电池模组还包括线路板4，线路板4安装于线路板安装部28，并与导电元件3沿第三方向间隔设置。
线路板4开设有线路板定位孔41，安装架2对应设置有线路板定位柱24，通过将线路板定位孔41与线路板定位柱24对正设置，能够将线路板4定位安装在安装架2上。
安装架2上形成有线路板安装部28，以便放置线路板4的采集元件，通过采集元件与极柱11相连接，从而方便进行信号采集。
线路板4开设有防爆阀避让孔25，电芯1沿第二方向的端面还形成有防爆阀13，通过将防爆阀避让孔25与防爆阀13相对正，能够避免对防爆阀13造成干涉，方便排气。防爆阀避让孔25的开孔面积大于防爆阀13的面积。
线路板定位柱24具体可以为热铆柱。
可选的，本实施例的安装架2的加工工艺为吸塑或者注塑，吸塑材质包括PC、PP等薄材塑料，注塑材质包括PC+ABS、PPE、PA66+GF20等塑料材质。
在一些实施例中，结合图6至图11所示，导电元件3沿第三方向的长度L1满足：a≤L1≤h-b-c，其中，a为极柱11沿第三方向的长度，h为电芯1沿第三方向的高度，b为线路板4沿第三方向的宽度，c为线路板4与导电元件3沿第三方向的装配间隙。
由于导电元件3一方面要与极柱11形成连接，另一方面要与外部电路形成良好接触，以便将电芯1的电能进行传输。通过设置导电元件3沿第三方向的长度L1满足：a≤L1≤h-b-c，从而能够在保证导电元件3完全遮盖极柱11并与极柱11形成良好接触的基础上，防止线路板4沿第三方向对导电元件3造成干涉，保证导电元件具有足够接触面积，使电池模组整体结构更加紧凑，保证安装精度。同时，h-b-c≥a，保证线路板4与电芯1沿第二方向的端面进行装配后，能够很好的为极柱11的布置位置形成让位空间，使电芯1沿第二方向的端面区域划分更加清晰，导电功能与检测功能之间互不干涉，减少短路的情况发生。
在一些实施例中，结合图6至图11所示，单个开窗部23适于同时与两个相邻设置的极柱11相对应；与单个开窗部23相对应的导电元件装配槽27沿第一方向的宽度为W，且满足：
W1≤W≤2×(t+d)；
其中，W1为导电元件3沿第一方向的宽度，t为单个电芯1沿第一方向的厚度，d为相邻两个电芯1之间的设计间隙，且满足：0≤d≤10％·t。
通过限制导电元件装配槽27沿第一方向的宽度W满足：W1≤W≤2×(t+d)；从而保证导电元件3能够顺利安装到导电元件装配槽27内，并且导电元件装配槽27的宽度小于等于相邻两个电芯1的实际宽度，从而在保证开窗部23能够容纳两个极柱11的基础上，方便安装架2与电芯1进行对正，并且在安装架2具有多个导电元件装配槽27时，能够满足连续设置的导电元件装配槽27均与相邻两个电芯1进行对正设置，避免发生错位，减少因电芯1的连续堆叠导致的开窗部23无法与相邻两个极柱11进行对正的情况发生，提高装配精度。
结合下表1，以下通过若干实施例和对比例，对本申请的电池模组关于导电元件装配槽27沿第一方向的宽度W所满足的条件W1≤W≤2×(t+d)，在不同参数下的实际使用效果进行对比。
表1
在实施例1中，将导电元件3沿第一方向的宽度W1设置为29.9mm；选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0.4mm；并将导电元件装配槽27沿第一方向的宽度W设置为30.7mm，此时，由于W满足：W1≤W≤2×(t+d)，即29.9mm≤30.7mm≤33.8mm，采用实施例1提供的设计参数，能够保证导电元件能够顺利安装到导电元件装配槽内，并且提升了装配精度，使设计结构更合理，更美观。
关于实施例2、实施例3、实施例4，均同样能够保证导电元件能够顺利安装到导电元件装配槽内，并且提升了装配精度，使设计结构更合理，更美观。在此不再赘述。
在对比例1中，将导电元件3沿第一方向的宽度W1设置为27.5mm；并将导电元件装配槽27沿第一方向的宽度W设置为28.5mm，选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，也即d需要满足0mm≤d≤1.65mm，作为反例，在对比例1中，选取相邻两个电芯1之间的设计间隙d为3mm；此时，由于相邻两个电芯1之间的设计间隙d过大，造成相邻电池间不能接触，影响电解液浸润及电池内部材料接触不良，尤其在电芯膨胀后，无法通过相邻电芯之间的挤压保证电池内部材料充分接触，不但会导致能量密度降低，还会造成电池寿命下降，不能满足质保要求，影响用户体验。
在对比例2中，将导电元件3沿第一方向的宽度W1设置为29mm；并将导电元件装配槽27沿第一方向的宽度W设置为33mm；选取单个电芯1沿第一方向的厚度t为15.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0mm；此时，由于W应满足：W1≤W≤2×(t+d)，而对比例1中2×(t+d)的设计结果为31mm，导致导电元件装配槽27沿第一方向的宽度33mm大于2×(t+d)的设计结果31mm，也即W＞2×(t+d)，此时会使得安装架2无分隔部29，安装架2所有导电元件装配槽27将会消失，使安装架2中部形成一个大的开口，不仅导电元件无安装槽无法定位，安装架2也无法定位安装到电芯；同时电芯极柱、极柱组间无物理隔挡，会造成极柱、极柱组之间发生短路，存在安全问题。
在一些实施例中，结合图6至图11所示，单个导电元件3同时与两个相邻设置的极柱11相连接，导电元件3沿第一方向的宽度W1满足：
e+t+d≤W1≤2×(t+d)-f；
其中，e为极柱11沿第一方向的宽度，t为单个电芯1沿第一方向的厚度，d为相邻两个电芯1之间的设计间隙，f为相邻两个导电元件3沿第一方向之间的设计间隙，且满足：0≤d≤10％·t。
通过限制导电元件3沿第一方向的宽度W1至少大于等于一个电芯1沿第一方向的厚度与一个极柱11沿第一方向的宽度以及相邻两个导电元件3沿第一方向之间的设计间隙之和，从而在导电元件3装配后，能够保证与两个极柱11同时接触，且至少覆盖两个极柱11所在的区域，避免导电元件3沿第一方向的宽度过小而导致的无法完全与极柱11良好接触的情况发生。同时，通过限制导电元件3沿第一方向的宽度W1小于等于相邻两个电芯1的实际宽度与相邻两个导电元件3沿第一方向之间的设计间隙的差值，从而在多个导电元件3沿第一方向连续设置时，避免相邻导电元件3之间的干涉，留出足够的安全间隙，方便多个导电元件3的连续设置。
开窗部23的开窗数量与电芯的并联形式及数量相关，在上述实施例中，单个开窗部23适于两个极柱11穿出，单个导电元件3适于连接两个相邻设置的极柱11。以下列举几种变形的实现形式。
结合下表2，以下通过若干实施例和对比例，对本申请的电池模组关于导电元件3沿第一方向的宽度W1所满足的条件e+t+d≤W1≤2×(t+d)-f，在不同参数下的实际使用效果进行对比。
表2

在实施例5中，将导电元件3沿第一方向的宽度W1设置为29.9mm；选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0.4mm；并选取相邻两个导电元件3沿第一方向之间的设计间隙f为3.5mm，选取极柱11沿第一方向的宽度e为11mm，求得e+t+d的设计结果为27.9mm，求得2×(t+d)-f的设计结果为30.3mm，使得W1满足e+t+d≤W1≤2×(t+d)-f，也即27.9mm≤29.9mm≤30.3mm。采用实施例5提供的设计参数，既能保证导电元件3能够顺利安装到导电元件装配槽27内，也能够保证导电元件3与两个极柱同时接触且覆盖两个极柱所在的区域，保证导电元件3与极柱的有效接触区域及焊接面积。同时可避免相邻导电元件3之间的干涉，留出足够的安全间隙，方便多个导电元件的连续设置，避免发生短路等安全事故，增强了电池的安全性并保证了电池生产过程中的安全性。
关于实施例6、实施例7、实施例8，均同样能够保证导电元件3能够顺利安装到导电元件装配槽27内，也能够保证导电元件3与两个极柱同时接触且覆盖两个极柱所在的区域，保证导电元件3与极柱的有效接触区域及焊接面积。同时可避免相邻导电元件3之间的干涉，留出足够的安全间隙，方便多个导电元件的连续设置，避免发生短路等安全事故，增强了电池的安全性并保证了电池生产过程中的安全性。在此不再赘述。
在对比例3中，将导电元件3沿第一方向的宽度W1设置为27.5mm；选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0.3mm；并选取相邻两个导电元件3沿第一方向之间的设计间隙f为3.5mm，选取极柱11沿第一方向的宽度e为11mm，求得e+t+d的设计结果为27.8mm，求得2×(t+d)-f的设计结果为30.1mm，导致W1＝27.5mm小于e+t+d的设计结果为27.8mm，无法满足e+t+d≤W1≤2×(t+d)-f。此时会造成导电元件3沿第一方向的宽度过小，不仅降低了导电元件3与极柱11的接触面从而降低电流传递面积，造成使用过程中温度过高从而引发安全问题；还会影响导电元件3与极柱的焊接，从而降低焊接强度，最终发生导电元件3与极柱焊接失效造成电池无法供电，影响用户使用甚至引发安全事故。
在对比例4中，将导电元件3沿第一方向的宽度W1设置为29.5mm；选取单个电芯1沿第一方向的厚度t为15.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0mm；并选取相邻两个导电元件3沿第一方向之间的设计间隙f为3mm，选取极柱11沿第一方向的宽度e为10mm，求得e+t+d的设计结果为25.5mm，求得2×(t+d)-f的设计结果为28mm，导致W1＝29.5mm大于2×(t+d)-f的设计结果为28mm，无法满足e+t+d≤W1≤2×(t+d)-f。此时会造成导电元件3沿第一方向的宽度过大，不仅影响导电元件3与导电元件装配槽27的装配，造成导电元件3无法安装使用，同时致使导电元件3之间相互接触短路，发生安全问题，造成电池无法制作及使用。
本实施例中，可选的，f与海拔、电芯电压等参数存在关联关系，其具体数值可以在设计阶段通过查表及进一步计算获得，在此不再赘述。
在一些实施例中，结合图12、图13所示，单个开窗部23适于同时与两组极柱组相对应，其中，单个极柱组包括相邻且并联连接的两个极柱11；与该开窗部23相对应的导电元件装配槽27适于安装一个导电元件3。
此时，单个导电元件3可以为同时连接四个极柱11。通过将单个开窗部23同时与两组极柱组相对应，能够实现两并电芯共同采用一个开窗的形式，方便导电元件3的布置。
在一些实施例中，结合图16、图17所示，单个开窗部23适于同时与两组极柱组相对应，其中，单个极柱组包括相邻且并联连接的两个极柱11；安装架2位于相邻极柱组之间还设置有分隔部29，分隔部29适于对两组极柱组的极柱11形成物理阻隔。
此时，单个导电元件3可以为同时连接四个极柱11。通过将单个开窗部23同时与两组极柱组相对应，能够实现两并电芯分别采用一个开窗的形式，从而由分隔部29对两组极柱组的极柱11形成物理阻隔，每个开窗内极柱11进行并联以形成极柱组，随后再将两组极柱组进行串联。采用该种布置形式，能够很好的对两组极柱组进行物理阻隔，避免不同极柱组之间的短路情况，提高安全性能。
在一些实施例中，结合图14、图15所示，单个开窗部23适于同时与四个极柱11相对应，安装架2位于相邻极柱11之间还设置有分隔部29，分隔部29适于对相邻的极柱11形成物理阻隔。
此时，单个导电元件3可以为同时连接四个极柱11。通过将同一个导电元件装配槽27区域划分为四个开窗部23，方便每个开窗部23与一个极柱11相对应，从而能够实现单并电芯采用多个开窗进行布置的形式，使相邻极柱11之间形成分隔部29，方便对相邻的极柱11形成物理阻隔，避免不同极柱11之间的短路情况，提高安全性能。
在一些实施例中，结合图15、图17所示，分隔部29沿第一方向的宽度为g，且满足：0＜g＜d+t-e，其中，d为相邻两个电芯1之间的设计间隙，t为单个电芯1沿第一方向的厚度，e为极柱11沿第一方向的宽度。
通过合理设置分隔部29沿第一方向的宽度，保证处于并联连接的极柱11之间能够具有物理阻隔，避免不同极柱11之间的短路情况，提高安全性能。同时避免分隔部29尺寸过大，造成物料浪费。
结合下表3，以下通过若干实施例和对比例，对本申请的电池模组关于分隔部29沿第一方向的宽度g所满足的条件0＜g＜d+t-e，在不同参数下的实际使用效果进行对比。
表3
在实施例9中，将分隔部29沿第一方向的宽度g设置为4.5mm；选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0.4mm；并选取极柱11沿第一方向的宽度e为11mm，求得d+t-e的设计结果为5.9mm；满足0＜g＜d+t-e。可以保证极柱、极柱组之间具有分隔部29，可防止极柱、极柱组之间发生短路，提升电池及电池制造过程中安全性。
关于实施例10、实施例11、实施例12，均同样能够保证极柱、极柱组之间具有分隔部29，防止极柱、极柱组之间发生短路，提升电池及电池制造过程中安全性。在此不再赘述。
在对比例5中，将分隔部29沿第一方向的宽度g设置为6mm；选取单个电芯1沿第一方向的厚度t为16.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0.3mm；并选取极柱11沿第一方向的宽度e为11mm，求得d+t-e的设计结果为5.8mm；无法满足0＜g＜d+t-e。此时会造成分隔部29尺寸过大，不仅影响导电元件的装配，还能造成安装架无法安装，造成设计失效。
在对比例6中，将分隔部29沿第一方向的宽度g设置为6.5mm；选取单个电芯1沿第一方向的厚度t为15.5mm，由于相邻两个电芯1之间的设计间隙d需要满足0≤d≤10％·t，此处选取相邻两个电芯1之间的设计间隙d为0mm；并选取极柱11沿第一方向的宽度e为10mm，求得d+t-e的设计结果为5.5mm；无法满足0＜g＜d+t-e。此时会造成分隔部29尺寸过大，不仅影响导电元件的装配，还能造成安装架无法安装，造成设计失效。
根据本申请的实施例，另一方面，还提供了一种用电设备，包括如上述的电池模组。
本申请的实施例提供的用电设备，通过将安装架2的尺寸与电芯1的尺寸进行关联，能够使安装架2与电芯1及导电元件3三者之间的配合更加精准，保证电池模组装配完成后的结构紧凑，且避免导电元件3之间发生短路的情况出现，提高安全性能。
显然，上述实施例仅是为清楚地说明所作的举例，而并非对实施方式的限定。虽然结合附图描述了本申请的实施例，但是本领域技术人员可以在不脱离本申请的精神和范围的情况下做出各种修改和变型，这样的修改和变型均落入本申请所限定的范围之内。

Claims (9)

  1. 一种电池模组，其特征在于，包括：
    多个电芯，沿第一方向堆叠设置，所述电芯沿第二方向的端面形成有极柱，其中，所述第二方向垂直于所述第一方向；
    安装架，同时与多个所述电芯沿第二方向的端面相连接，所述安装架对应所述极柱的区域开设有开窗部，以使所述极柱由所述开窗部穿出；所述安装架局部凹陷形成导电元件装配槽，所述开窗部位于所述导电元件装配槽范围内；
    导电元件，安装于所述导电元件装配槽内，所述导电元件适于连接至少两个相邻设置的所述极柱；
    所述导电元件装配槽沿第三方向的长度为L，且满足：L1≤L≤h，其中，L1为所述导电元件沿第三方向的长度，h为所述电芯沿第三方向的高度，所述第三方向同时垂直于所述第一方向与所述第二方向；
    单个所述开窗部适于同时与两个相邻设置的所述极柱相对应；与单个所述开窗部相对应的所述导电元件装配槽沿第一方向的宽度为W，且满足：
    W1≤W≤2×(t+d)；
    其中，W1为所述导电元件沿第一方向的宽度，t为单个所述电芯沿第一方向的厚度，d为相邻两个所述电芯之间的设计间隙，且满足：0≤d≤10％·t。
  2. 根据权利要求1所述的电池模组，其特征在于，所述安装架沿第三方向位于所述开窗部其中一侧的区域设置有线路板安装部；
    所述电池模组还包括线路板，所述线路板安装于所述线路板安装部，并与所述导电元件沿第三方向间隔设置。
  3. 根据权利要求2所述的电池模组，其特征在于，所述导电元件沿第三方向的长度L1满足：a≤L1≤h-b-c，其中，a为所述极柱沿第三方向的长度，h为所述电芯沿第三方向的高度，b为所述线路板沿第三方向的宽度，c为所述线路板与所述导电元件沿第三方向的装配间隙。
  4. 根据权利要求1所述的电池模组，其特征在于，单个所述导电元件同时与两个相邻设置的所述极柱相连接，所述导电元件沿第一方向的宽度W1满足：
    e+t+d≤W1≤2×(t+d)-f；
    其中，e为所述极柱沿第一方向的宽度，t为单个所述电芯沿第一方向的厚度，d为相邻两个所述电芯之间的设计间隙，f为相邻两个所述导电元件沿第一方向之间的设计间隙，且满足：0≤d≤10％·t。
  5. 根据权利要求1至3中任一项所述的电池模组，其特征在于，单个所述开窗部适于同时与两组极柱组相对应，其中，单个所述极柱组包括相邻且并联连接的两个所述极柱；与该所述开窗部相对应的所述导电元件装配槽适于安装一个所述导电元件。
  6. 根据权利要求1所述的电池模组，其特征在于，单个所述开窗部适于同时与两组极柱组相对应，其中，单个所述极柱组包括相邻且并联连接的两个所述极柱；所述安装架位于相邻所述极柱组之间还设置有分隔部，所述分隔部适于对两组所述极柱组的所述极柱形成物理阻隔。
  7. 根据权利要求1所述的电池模组，其特征在于，单个所述开窗部适于同时与四个所述极柱相对应，所述安装架位于相邻所述极柱之间还设置有分隔部，所述分隔部适于对相邻的所述极柱形成物理阻隔。
  8. 根据权利要求6或7所述的电池模组，其特征在于，所述分隔部沿第一方向的宽度为g，且满足：0＜g＜d+t-e，其中，d为相邻两个所述电芯之间的设计间隙，t为单个所述电芯沿第一方向的厚度，e为所述极柱沿第一方向的宽度。
  9. 一种用电设备，其特征在于，包括如上述权利要求1至8中任一项所述的电池模组。
PCT/CN2025/100418 2024-06-11 2025-06-11 电池模组及用电设备 Pending WO2025256554A1 (zh)

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