Battery monomer assembly and battery device

Abstract

The utility model discloses a battery monomer assembly and a battery device, and belongs to the technical field of batteries. The battery monomer assembly comprises a supporting rod, a mounting plate, a battery unit and a clamping device, mounting plates are arranged at the two opposite ends of the supporting rod, the supporting rod is supported between the mounting plates at the two ends to limit the mounting plates at the two ends to be close to each other, the battery unit is clamped between the mounting plates at the two ends and comprises one or at least two single batteries, and the clamping device is arranged across the mounting plates at the two ends and connected with the mounting plates at the two ends respectively. And a supporting rod is arranged on one side, facing the corresponding clamping device, of the battery unit. According to the battery monomer assembly, the extrusion force on the battery monomers can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery cell assembly and a battery device. Background Art

[0002] With the development of battery technology, higher requirements are put forward for battery cell assemblies. In related technologies, battery cells are subjected to relatively large extrusion forces. Utility Model Content

[0003] To solve the above technical problems, this application provides a battery cell assembly and a battery device to reduce the extrusion force on the battery cell.

[0004] This application is implemented through the following technical solutions.

[0005] In a first aspect of an embodiment of this application, a battery cell assembly is provided, including:

[0006] Support rods;

[0007] Mounting plates, with the mounting plates provided at opposite ends of the support rod, and the support rod being supported between the two mounting plates at its ends to restrict the two mounting plates from approaching each other;

[0008] Battery units, clamped between the two mounting plates at its ends, and the battery units include one or at least two battery cells;

[0009] Clamping devices, spanning across the two mounting plates at its ends, with the clamping devices respectively connected to the two mounting plates, and the support rod being provided on the side of the battery unit facing the corresponding clamping device.

[0010] In an embodiment of this application, a support rod is provided on the side of the battery unit facing the corresponding clamping device, and the support rod is close to the clamping device. On the one hand, the support rod can provide a certain supporting force for the mounting plate to resist the clamping force of the clamping device, and when the clamping device locks the two mounting plates on both sides, it can reduce the extrusion force of the mounting plate on the battery cell; on the other hand, the overall strength of the battery cell assembly is relatively high, and under the clamping of the clamping device, the battery unit can be relatively firmly fixed between the mounting plates, which is beneficial to improving the stability of the battery cell assembly.

[0011] In one embodiment, the clamping device includes:

[0012] Clamping members, with each end of the mounting plate connected to the corresponding clamping member, and along the axial projection of the support rod, the projection area of the support rod is located within the projection area of the clamping member;

[0013] Transition members, respectively connected to the two clamping members at its ends.

[0014] In the embodiment of the present application, the clamping member applies force to the mounting plate so that the mounting plate clamps the battery unit. Along the axial projection of the support rod, the projection area of ​​the support rod is located within the projection area of ​​the clamping member, so that the support rod is located at the position where the clamping member applies the clamping force to the mounting plate, thereby enabling the support rod to better provide a certain supporting force for the mounting plate to resist the clamping force of the clamping member, thereby facilitating the support rod to better support the mounting plate to reduce the squeezing force of the mounting plate on the battery unit.

[0015] In one embodiment, the battery cell assembly further includes a first locking member, the first locking member being inserted through the corresponding clamping member and the corresponding mounting plate, the first locking member being connected to the support rod to clamp the corresponding clamping member and the corresponding mounting plate between the first locking member and the support rod.

[0016] In an embodiment of the present application, the first locking member is inserted through the corresponding clamping member and the corresponding mounting plate, and the first locking member is connected to the support rod to clamp the corresponding clamping member and the corresponding mounting plate between the first locking member and the support rod, so that the mounting plate and the support rod are connected into a whole, which is beneficial to improving the overall strength of the battery cell assembly.

[0017] In one embodiment, both ends of the support rod are provided with the first locking member, and the first locking member includes:

[0018] A first stopper abuts against a side of the clamping member facing away from the mounting plate;

[0019] A locking rod, one end of which is connected to the first stopper, and the other end of which is threadedly connected to the support rod, so as to clamp the corresponding clamping member and the corresponding mounting plate between the first stopper and the support rod.

[0020] In an embodiment of the present application, one end of the locking rod is connected to the first stop member, and the other end of the locking rod is threadedly connected to the support rod to clamp the corresponding clamping member and the corresponding mounting plate between the first stop member and the support rod, which is beneficial to shortening the size of the pressure-bearing part structure in the support rod, and then helps to reduce the possibility of deflection of the support rod, thereby improving the stability of the battery cell assembly.

[0021] In one embodiment, the support rod has a weight-reducing hole, which penetrates the support rod along its axial direction, the inner wall of the weight-reducing hole has an internal thread, the locking rod has an external thread screwed with the internal thread, and the first locking pieces at both ends are arranged at intervals.

[0022] In the embodiments of the present application, the weight-reducing holes penetrate through the support rod along the axial direction of the support rod. The inner wall of the weight-reducing holes has internal threads, and the locking rod has external threads that are screwed with the internal threads. The first locking members at both ends are arranged at intervals. On the one hand, it is beneficial to reduce the weight of the support rod, and then beneficial to reduce the weight of the battery cell assembly to improve the energy density of the battery cell assembly; on the other hand, the external threads of the locking rod are screwed with the internal threads of the support rod, so that during the installation of the support rod and the first locking member, the first locking member can be assembled with the support rod outside the battery cell assembly, and there is a large assembly operation space, which is beneficial to improving the convenience of assembling the support rod and the first locking member.

[0023] In one embodiment, the battery cell assembly includes a second locking member, and the second locking member includes:

[0024] A pull rod, the support rod is a hollow rod, the support rod is sleeved on the pull rod along the axial direction, and both ends of the pull rod in the axial direction respectively pass through the corresponding mounting plate and the corresponding clamping member;

[0025] A second stop member, connected to the pull rod to clamp the corresponding clamping member and the corresponding mounting plate between the second stop member. Along the axial direction of the pull rod, at least one end of the second stop member has a locking function to lock the corresponding mounting plate.

[0026] In the embodiments of the present application, both ends of the pull rod in the axial direction respectively pass through the corresponding mounting plate and the corresponding clamping member, so that the pull rod is a long rod that axially penetrates the mounting plates and clamping members on the opposite sides. The support rod is a hollow rod, and the support rod is sleeved on the pull rod along the axial direction, which not only enables the support rod to provide a certain supporting force for the mounting plate to resist the clamping force of the second locking member and the clamping member, but also improves the bending resistance of the support rod, which is beneficial to reducing the possibility of the support rod deflecting and improving the stability of the battery cell assembly.

[0027] In one embodiment, along the axial direction of the support rod, one side of the mounting plate close to the support rod has a convex platform, and both ends of the support rod in the axial direction are in contact with the convex platform.

[0028] In the embodiments of the present application, the distance between the two corresponding convex platforms is small, and both ends of the support rod in the axial direction are in contact with the convex platforms of the mounting plate, which is beneficial to shortening the length of the support rod, and then beneficial to reducing the possibility of the support rod deflecting and improving the stability of the battery cell assembly.

[0029] In one embodiment, the arrangement direction of the two mounting plates at both ends is the first direction, the clamping devices are arranged on both opposite sides of the battery unit along the second direction, the second direction intersects with the first direction, the support rods on both sides are located between the clamping devices on both sides, and the battery unit is located between the support rods on both sides.

[0030] In an embodiment of the present application, the support rods on both sides are located between the clamping devices on both sides, and the battery cell is located between the support rods on both sides, so that the support rods are located between the battery cell and the corresponding clamping device along the second direction, and then the support rods will not occupy the internal space of the battery cell, so as to reduce the interference of the support rods on the arrangement of the battery cells.

[0031] In one embodiment, the battery cell assembly further includes a first baffle, and the first baffle is disposed on opposite sides of the battery cell along the second direction, the first baffle on each side abuts against the corresponding battery cell in the battery cell, and the first baffle on each side is clamped between the mounting plates at both ends.

[0032] In the embodiment of the present application, the first baffle on each side abuts against the corresponding battery cells in the battery unit to limit the battery cells of the battery unit along the second direction, which is beneficial to reduce the possibility of the battery cells moving along the second direction, and further beneficial to improve the stability of the battery cell assembly.

[0033] In one embodiment, the first baffles on both sides are located between the support rods on both sides.

[0034] In the embodiment of the present application, the first baffles on both sides are located between the support rods on both sides, so that the first baffles are located between the battery cells and the corresponding support rods. The support rods are located along the second direction on the side of the first baffle away from the battery cells to reduce the interference of the support rods on the arrangement of the first baffles and the battery cells.

[0035] In one embodiment, the battery cell assembly further includes a second baffle, and the second baffle is provided on opposite sides of the battery cell along a third direction, and the third direction is cross-arranged with the first direction and the second direction respectively, and the second baffle on each side abuts against the corresponding battery cell in the battery cell, and the second baffle on each side is clamped between the mounting plates at both ends.

[0036] In the embodiment of the present application, the second baffle on each side abuts against the corresponding battery cell in the battery unit to limit the battery cell of the battery unit along the third direction, which is beneficial to reduce the possibility of the battery cell moving along the third direction, and then helps to improve the stability of the battery cell assembly.

[0037] In one embodiment, the battery cell is cylindrical in shape, the axial direction of the cylindrical battery cell is arranged along the first direction, at least one end of the battery cell along the first direction has a pole, the second baffle is formed with a mounting hole, and the battery cell assembly also includes a temperature sensor penetrating the mounting hole, and the temperature sensor is in contact with the outer shell corresponding to the battery cell.

[0038] In the embodiments of the present application, an installation hole is formed in the second baffle, and the temperature sensor is inserted through the installation hole, so that the temperature sensor can pass through the second baffle and contact the outer shell of the corresponding battery cell, thereby measuring the temperature of the outer shell of the corresponding cylindrical battery cell, facilitating the monitoring of the temperature of the battery cells in the battery cell assembly, and being conducive to improving the safety of the battery cell assembly.

[0039] In a second aspect of the embodiments of the present application, a battery device is provided, including:

[0040] A box body;

[0041] The battery cell assembly according to any one of the foregoing embodiments, and the battery cell assembly is disposed in the box body.

[0042] In one embodiment, the number of the battery cell assemblies is at least two, and at least two of the battery cell assemblies are arranged along the axial direction of the support rod.

[0043] In the embodiments of the present application, at least two battery cell assemblies are arranged along the axial direction of the support rod to expand the size of the battery device in the first direction, and then expand the size of the battery device to a more reasonable range, which is conducive to improving the applicable range of the battery device.

[0044] Utility model effect

[0045] A support rod is disposed on one side of the battery unit facing the corresponding clamping device, and the support rod is close to the clamping device. On the one hand, the support rod can provide a certain supporting force for the mounting plate to resist the clamping force of the clamping device, and when the clamping device locks the two side mounting plates, the extrusion force of the mounting plate on the battery cell can be reduced; on the other hand, the overall strength of the battery cell assembly is relatively high, and under the clamping of the clamping device, the battery unit can be relatively firmly fixed between the mounting plates, which is conducive to improving the stability of the battery cell assembly. Brief description of the drawings

[0046] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0047] Figure 1 It is a schematic structural diagram of a battery cell assembly in an embodiment of the present application;

[0048] Figure 2 It is a schematic structural diagram of a battery cell assembly in an embodiment of the present application, and the second baffle is not shown in the figure;

[0049] Figure 3Schematic diagram of the assembly structure of the mounting plate, the first locking member, the support rod and the second baffle in an embodiment of the present application;

[0050] Figure 4 Schematic diagram of the assembly structure of the mounting plate, the second locking member, the support rod and the second baffle in an embodiment of the present application.

[0051] Explanation of reference numerals

[0052] 1. Support rod; 1a. Weight reduction hole; 2. Mounting plate; 2a. Boss; 2b. Groove; 3. Battery unit; 31. Battery cell; 4. Clamping device; 41. Clamping member; 42. Transition member; 5. First locking member; 51. First stop member; 52. Locking rod; 6. Second locking member; 61. Second stop member; 62. Pull rod; 7. First baffle; 8. Second baffle; 8a. Mounting hole; 9. Temperature sensor. Detailed description of the specific implementation

[0053] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0055] In the description of the embodiments of the present application, technical terms such as "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0056] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0057] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0060] In the related art, the clamping device is arranged across the two ends of the mounting plate. When the clamping device clamps the mounting plates at both ends, the clamping force of the clamping device clamping the mounting plates at both ends is not easy to control, which makes it possible for the clamping device to clamp the mounting plates at both ends too tightly on the battery cells, thereby making the squeezing force generated by the mounting plates clamping the battery cells larger.

[0061] If the support rod can provide a certain support force for the mounting plate near the clamping device, it can effectively reduce the squeezing force of the mounting plate clamping the battery cell on the battery cell. The support rod of the embodiment of the present application is arranged on the side of the battery unit facing the corresponding clamping device, so that the support rod can provide a certain support force for the mounting plate near the clamping device, and when the clamping device locks the mounting plates on both sides, the squeezing force of the mounting plate on the battery cell can be reduced.

[0062] The solutions of the embodiments of the present application may be applied to, but are not limited to, a battery cell assembly or a battery device including a plurality of battery cell assemblies.

[0063] An embodiment of the present application provides a battery device, including a box and a battery cell assembly, wherein the battery cell assembly is disposed in the box.

[0064] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 31, and the plurality of battery cells 31 are connected in series, parallel or in a combined series-parallel manner through busbar components.

[0065] The battery cell 31 includes a housing and an electrode assembly. The electrode assembly includes positive and negative electrode plates and a separator. The housing can be a sealed structure or a non-sealed structure. As an example, the housing is a non-sealed structure, and the housing serves to protect the electrode assembly. The battery cell 31 further includes a sealing bag located between the housing and the electrode assembly, and the sealing bag is used to encapsulate the electrode assembly. Specifically, the sealing bag can be a bag-shaped insulating part or an aluminum-plastic film.

[0066] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 31; as an example, the battery cell assembly can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells 31 to form an independent module. As an example, the battery module can be formed by tying a plurality of battery cells 31 with a cable tie.

[0067] In some embodiments, the battery device can be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0068] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box body by fixing the battery module in the box body.

[0069] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing a plurality of battery cells 31 to the box body.

[0070] As an example, the box body may include a first box body and a second box body. The first box body and the second box body are buckled so that a closed space is formed inside the box body to accommodate the battery cell assembly. The "closed" here means covering or closing, which can be sealed or non-sealed. The first box body can be a top cover or a bottom plate.

[0071] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0072] As an example, the box body can be part of the chassis structure of a vehicle. For example, the top cover of the box body can become at least part of the floor of the vehicle, or the frame of the box body can become at least part of the cross beam and longitudinal beam of the vehicle.

[0073] In some embodiments, the battery device can be an energy storage device, and the energy storage device includes a box body, and a door is provided on at least one side of the box body. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0074] For the battery cell assembly according to an embodiment of the present application, please refer to Figure 1 and Figure 2 , the battery cell assembly includes a support rod 1, a mounting plate 2, a battery cell 3, and a clamping device 4. Mounting plates 2 are provided at opposite ends of the support rod 1. The support rod 1 is supported between the two end mounting plates 2 to limit the two end mounting plates 2 from approaching each other. The battery cell 3 is clamped between the two end mounting plates 2. The battery cell 3 includes one or at least two battery cells 31. The clamping device 4 straddles the two end mounting plates 2, and the clamping device 4 is respectively connected to the two end mounting plates 2. A support rod 1 is provided on the side of the battery cell 3 facing the corresponding clamping device 4.

[0075] Exemplarily, the material of the support rod 1 is not limited. For example, it can be steel or aluminum.

[0076] Exemplarily, the material of the mounting plate 2 is not limited. For example, it can be steel or aluminum.

[0077] Exemplarily, the material of the clamping device 4 is not limited. For example, it can be steel or aluminum.

[0078] Exemplarily, please refer to Figure 1 and Figure 2 , the mounting plate 2 can be a honeycomb plate with a certain thickness. Along the arrangement direction of the mounting plate 2, the battery cell 3 is clamped between two adjacent mounting plates 2. The projection area of the battery cell 3 is located within the projection area of the mounting plate 2. The support rod 1 is provided outside the battery cell 3 and on the side of the battery cell 3 facing the corresponding clamping device 4.

[0079] Exemplarily, the support rod 1 can also be provided inside the battery cell 3.

[0080] In an embodiment of the present application, a support rod 1 is provided on the side of the battery cell 3 facing the corresponding clamping device 4, and the support rod 1 is close to the clamping device 4. On the one hand, the support rod 1 can provide a certain supporting force for the mounting plate 2 to resist the clamping force of the clamping device 4. When the clamping device 4 locks the two side mounting plates 2, the extrusion force of the mounting plate 2 on the battery cell 31 can be reduced; on the other hand, the overall strength of the battery cell assembly is relatively high. Under the clamping of the clamping device 4, the battery cell 3 can be relatively firmly fixed between the mounting plates 2, which is beneficial to improving the stability of the battery cell assembly.

[0081] In one embodiment, please refer to Figure 1 and Figure 2 , the clamping device 4 includes a clamping member 41 and a transition member 42. Each end mounting plate 2 is connected to the corresponding clamping member 41. Along the axial projection of the support rod 1, the projection area of the support rod 1 is located within the projection area of the clamping member 41. The transition member 42 is respectively connected to the two end clamping members 41.

[0082] For example, see Figure 2 The transition piece 42 is respectively connected to the clamping pieces 41 at both ends, so that the clamping device 4 forms a structure similar to a C-shaped iron.

[0083] In the embodiment of the present application, the clamping member 41 applies force to the mounting plate 2 so that the mounting plate 2 clamps the battery cell 3. Along the axial projection of the support rod 1, the projection area of ​​the support rod 1 is located within the projection area of ​​the clamping member 41, so that the support rod 1 is located at the position where the clamping member 41 applies the clamping force to the mounting plate 2, thereby enabling the support rod 1 to better provide a certain supporting force for the mounting plate 2 to resist the clamping force of the clamping member 41, thereby facilitating the support rod 1 to better support the mounting plate 2, thereby reducing the squeezing force of the mounting plate 2 on the battery cell 31.

[0084] It is understandable that the positional relationship between the projection area of ​​the support rod 1 and the projection area of ​​the clamp 41 along the axial projection of the support rod 1 is not limited. For example, the projection area of ​​the support rod 1 may partially overlap with the projection area of ​​the clamp 41.

[0085] In one embodiment, please refer to Figure 2 and Figure 3 The battery cell assembly also includes a first locking member 5, which is inserted into the corresponding clamping member 41 and the corresponding mounting plate 2, and is connected to the support rod 1 to clamp the corresponding clamping member 41 and the corresponding mounting plate 2 between the first locking member 5 and the support rod 1.

[0086] In the embodiment of the present application, the first locking member 5 is inserted through the corresponding clamping member 41 and the corresponding mounting plate 2, and the first locking member 5 is connected to the support rod 1 to clamp the corresponding clamping member 41 and the corresponding mounting plate 2 between the first locking member 5 and the support rod 1, so that the mounting plate 2 and the support rod 1 are connected into a whole, which is beneficial to improving the overall strength of the battery cell assembly.

[0087] It is understandable that the battery cell assembly may not include the first locking member 5. Exemplarily, the first locking member 5 clamps the corresponding mounting plate 2, and the support rod 1 directly abuts against the corresponding position of the mounting plate 2.

[0088] In one embodiment, please refer to Figure 2 and Figure 3 A first locking member 5 is provided at both ends of the support rod 1, and the first locking member 5 includes a first stop member 51 and a locking rod 52. The first stop member 51 abuts against the side of the corresponding clamping member 41 away from the mounting plate 2. One end of the locking rod 52 is connected to the first stop member 51, and the other end of the locking rod 52 is threadedly connected to the support rod 1 to clamp the corresponding clamping member 41 and the corresponding mounting plate 2 between the first stop member 51 and the support rod 1.

[0089] For example, see Figure 3The locking rod 52 is disposed through the corresponding clamping member 41 and the corresponding mounting plate 2 .

[0090] Exemplarily, the first stopper 51 and the locking rod 52 may be integrally formed, or may be formed separately and then connected.

[0091] In the embodiment of the present application, one end of the locking rod 52 is connected to the first stop member 51, and the other end of the locking rod 52 is threadedly connected to the support rod 1 to clamp the corresponding clamping member 41 and the corresponding mounting plate 2 between the first stop member 51 and the support rod 1, which is beneficial to shorten the size of the pressure-bearing part structure in the support rod 1, and then helps to reduce the possibility of deflection of the support rod 1, so as to improve the stability of the battery cell assembly.

[0092] It is understandable that the first locking member 5 may not include the locking rod 52. Exemplarily, the first stopper 51 abuts against the side of the corresponding clamping member 41 away from the mounting plate 2, the support rod 1 penetrates the corresponding clamping member 41 and the corresponding mounting plate 2, and the support rod 1 is connected to the corresponding first stopper 51.

[0093] In one embodiment, please refer to Figure 2 and Figure 3 The support rod 1 has a lightening hole 1a, which penetrates the support rod 1 along its axial direction. The inner wall of the lightening hole 1a has an internal thread, and the locking rod 52 has an external thread screwed with the internal thread. The first locking members 5 at both ends are arranged at intervals.

[0094] In the embodiment of the present application, the weight-reducing hole 1a passes through the support rod 1 along the axial direction of the support rod 1, the inner wall of the weight-reducing hole 1a has an internal thread, the locking rod 52 has an external thread screwed with the internal thread, and the first locking members 5 at both ends are arranged at intervals. On the one hand, it is beneficial to reduce the weight of the support rod 1, and then it is beneficial to reduce the weight of the battery cell assembly to improve the energy density of the battery cell assembly; on the other hand, the external thread of the locking rod 52 is screwed with the internal thread of the support rod 1, so that in the process of installing the support rod 1 and the first locking member 5, the first locking member 5 can be assembled with the support rod 1 outside the battery cell assembly, which has a larger assembly operation space, which is beneficial to improve the convenience of assembling the support rod 1 and the first locking member 5.

[0095] It is understandable that the internal and external threads of the locking rod 52 and the support rod 1 are not limited. For example, the locking rod 52 may have internal threads, and the support rod 1 may have external threads.

[0096] In one embodiment, please refer to Figure 4, the battery cell assembly includes a second locking member 6. The second locking member 6 includes a pull rod 62 and a second stop member 61. The support rod 1 is a hollow rod. The support rod 1 is axially sleeved on the pull rod 62. The two ends of the pull rod 62 in the axial direction respectively penetrate through the corresponding mounting plate 2 and the corresponding clamping member 41. The second stop member 61 is connected to the pull rod 62 to clamp the corresponding clamping member 41 and the corresponding mounting plate 2 between the second stop member 61. Along the axial direction of the pull rod 62, at least one end of the second stop member 61 has a locking function to lock the corresponding mounting plate 2.

[0097] Exemplarily, the pull rod 62 can be a long screw. The support rod 1 is sleeved on the long screw. The two ends of the long screw penetrate through the corresponding mounting plate 2 and the corresponding clamping member 41. The second stop member 61 at one end of the pull rod 62 can be a screw head, and the second stop member 61 at the other end of the pull rod 62 can be a nut. The nut is in threaded cooperation with the long screw so that the nut and the screw head can clamp the mounting plate 2. Under the abutment of the support rod 1, the support rod 1 can provide a certain supporting force for the mounting plate 2 to resist the clamping force of the second locking member 6.

[0098] Exemplarily, the pull rod 62 can be a long screw. The support rod 1 is sleeved on the long screw. The two ends of the long screw penetrate through the corresponding mounting plate 2 and the corresponding clamping member 41. The second stop members 61 at both ends of the pull rod 62 are both nuts. The nuts at both ends are in threaded cooperation with the long screw so that the nuts at both ends can clamp the mounting plate 2. Under the abutment of the support rod 1, the support rod 1 can provide a certain supporting force for the mounting plate 2 to resist the clamping force of the second locking member 6.

[0099] In the embodiment of the present application, the two ends of the pull rod 62 in the axial direction respectively penetrate through the corresponding mounting plate 2 and the corresponding clamping member 41, so that the pull rod 62 is a long rod axially penetrating through the mounting plate 2 and the clamping member 41 on the opposite sides. The support rod 1 is a hollow rod. The support rod 1 is axially sleeved on the pull rod 62, which not only enables the support rod 1 to provide a certain supporting force for the mounting plate 2 to resist the clamping forces of the second locking member 6 and the clamping member 41, but also improves the bending resistance of the support rod 1, which is beneficial to reducing the possibility of the support rod 1 being deflected, so as to improve the stability of the battery cell assembly.

[0100] In one embodiment, please refer to Figures 1 to 4 , along the axial direction of the support rod 1, the side of the mounting plate 2 close to the support rod 1 has a convex platform 2a. Both ends of the support rod 1 in the axial direction are in abutment with the convex platform 2a.

[0101] Exemplarily, please refer to Figures 1 to 4, at the position of the boss 2a, the side of the mounting plate 2 facing away from the support rod 1 correspondingly has a groove 2b. Both the clamping member 41 and the first stopper 51 are located in the groove 2b, which can not only shorten the size of the transition member 42, but also help the clamping member 41 clamp the mounting plate 2 more firmly, thereby facilitating the improvement of the assembly strength of the battery cell assembly.

[0102] In the embodiment of the present application, the distance between two corresponding bosses 2a is relatively small, and both axial ends of the support rod 1 are in contact with the bosses 2a of the mounting plate 2, which is beneficial to shortening the length of the support rod 1, and then is beneficial to reducing the possibility of the support rod 1 deflecting, so as to improve the stability of the battery cell assembly.

[0103] It can be understood that the mounting plate 2 may not be provided with bosses 2a. Exemplarily, along the axial direction of the support rod 1, the side of the mounting plate 2 close to the support rod 1 is generally a plane, and both axial ends of the support rod 1 are in contact with the corresponding mounting plate 2.

[0104] In one embodiment, please refer to Figures 1 to 4 , the arrangement direction of the two end mounting plates 2 is the first direction, clamping devices 4 are provided on both opposite sides of the battery unit 3 along the second direction, the second direction is arranged crosswise with the first direction, the two side support rods 1 are located between the two side clamping devices 4, and the battery unit 3 is located between the two side support rods 1.

[0105] Exemplarily, Figures 1 to 4 the direction shown by R1 in Figure 1 and Figure 2 the direction shown by R2 in

[0106] Exemplarily, the first direction and the second direction are arranged perpendicular to each other.

[0107] Exemplarily, please refer to Figure 2 , a plurality of battery cells 31 are arranged along the second direction.

[0108] Exemplarily, please refer to Figure 2 , the battery unit 3 includes three rows of battery cells 31, at least two rows of battery cells 31 are arranged along a direction that intersects both the first direction and the second direction, and at least two battery cells 31 in each row are arranged along the second direction.

[0109] In the embodiment of the present application, the two side support rods 1 are located between the two side clamping devices 4, and the battery unit 3 is located between the two side support rods 1, so that the support rod 1 is located between the battery unit 3 and the corresponding clamping device 4 along the second direction, and then the support rod 1 does not occupy the internal space of the battery unit 3, so as to reduce the interference of the support rod 1 on the arrangement of the battery cells 31.

[0110] In one embodiment, please refer to Figure 2The battery cell assembly also includes a first baffle 7, and the first baffle 7 is arranged on the opposite sides of the battery unit 3 along the second direction. The first baffle 7 on each side abuts against the corresponding battery cell 31 in the battery unit 3, and the first baffle 7 on each side is clamped between the mounting plates 2 at both ends.

[0111] Exemplarily, the material of the first baffle 7 is not limited, and may be plastic or metal, for example.

[0112] In the embodiment of the present application, the first baffle 7 on each side abuts against the corresponding battery cell 31 in the battery unit 3 to limit the battery cell 31 of the battery unit 3 along the second direction, which is beneficial to reduce the possibility of the battery unit 3 moving along the second direction, and then helps to improve the stability of the battery cell assembly.

[0113] It is understandable that the battery cell assembly may not include the first baffle 7. For example, the battery cell 31 can only rely on the clamping force of the mounting plate 2 along the first direction to generate friction between the battery cell 31 and the mounting plate 2 to limit the movement of the battery cell 31 along the second direction.

[0114] In one embodiment, please refer to Figure 2 The first baffles 7 on both sides are located between the support rods 1 on both sides.

[0115] In the embodiment of the present application, the first baffles 7 on both sides are located between the support bars 1 on both sides, so that the first baffles 7 are located between the battery cells 3 and the corresponding support bars 1. The support bars 1 are located along the second direction on the side of the first baffles 7 away from the battery cells 3, so as to reduce the interference of the support bars 1 on the arrangement of the first baffles 7 and the battery cells 31.

[0116] It is understandable that the arrangement position of the first baffle plate 7 is not limited. For example, the first baffle plate 7 can also be located between the corresponding support rod 1 and the corresponding clamping device 4.

[0117] In one embodiment, please refer to Figure 1 , Figure 3 and Figure 4 The battery cell assembly also includes a second baffle 8. The second baffle 8 is arranged on the opposite sides of the battery unit 3 along the third direction. The third direction is arranged crosswise with the first direction and the second direction respectively. The second baffle 8 on each side abuts against the corresponding battery cell 31 in the battery unit 3, and the second baffle 8 on each side is clamped between the mounting plates 2 at both ends.

[0118] For example, Figure 3 and Figure 4 The direction indicated by R3 is the third direction.

[0119] Exemplarily, the first direction, the second direction and the third direction are all arranged perpendicular to each other.

[0120] In the embodiment of the present application, the second baffle 8 on each side abuts against the corresponding battery cell 31 in the battery cell 3 to limit the battery cell 31 in the battery cell 3 in the third direction, which is beneficial to reducing the possibility of the battery cell 3 moving in the third direction, and then beneficial to improving the stability of the battery cell assembly.

[0121] It can be understood that the battery cell assembly may not include the second baffle 8. Exemplarily, the battery cell 31 may rely only on the clamping force of the mounting plate 2 in the first direction to generate a frictional force between the battery cell 31 and the mounting plate 2 that restricts the movement of the battery cell 31 in the third direction.

[0122] In one embodiment, please refer to Figure 2 , the shape of the battery cell 31 is cylindrical, the axial direction of the cylindrical battery cell 31 is arranged in the first direction, at least one end of the battery cell 31 in the first direction has a pole post, the second baffle 8 is formed with a mounting hole 8a, and the battery cell assembly further includes a temperature sensor 9 passing through the mounting hole 8a, and the temperature sensor 9 contacts the outer shell of the corresponding battery cell 31.

[0123] In the embodiment of the present application, by opening the mounting hole 8a in the second baffle 8 and passing the temperature sensor 9 through the mounting hole 8a, the temperature sensor 9 can pass through the second baffle 8 and contact the outer shell of the corresponding battery cell 31 to measure the temperature of the outer shell of the corresponding cylindrical battery cell 31, which is convenient for monitoring the temperature of the battery cell 31 in the battery cell assembly and is beneficial to improving the safety of the battery cell assembly.

[0124] In one embodiment, the number of battery cell assemblies is at least two, and at least two battery cell assemblies are arranged along the axial direction of the support rod 1.

[0125] Exemplarily, two adjacent battery cell assemblies are arranged in the first direction, and the corresponding mounting plates 2 of two adjacent battery cell assemblies are connected to each other.

[0126] In the embodiment of the present application, at least two battery cell assemblies are arranged along the axial direction of the support rod 1 to expand the size of the battery device in the first direction, and then expand the size of the battery device to a more reasonable range, which is beneficial to improving the applicable range of the battery device.

[0127] For the battery cell assembly of the embodiment of the present application, please refer to Figures 1 to 4, the battery cell 3 is clamped between the mounting plates 2 in the first direction. Clamping devices 4 are provided on both opposite sides of the mounting plates 2 in the second direction. The clamping device 4 includes a clamping member 41 and a transition member 42. The clamping member 41 can clamp the mounting plates 2 at both ends, so that the mounting plates 2 can clamp the battery cell 3 tightly in the first direction. To reduce the possibility that the mounting plates 2 clamp the battery cell 3 too tightly and squeeze the battery cell 3, the battery monomer assembly further includes a support member. In the first direction, the projection area of the support member is located within the projection area of the clamping member 41, so that the support member can provide a certain support force for the mounting plates 2 to resist the clamping force of the clamping member 41 on the mounting plates 2. The battery monomer assembly further includes a first locking member 5. The first locking member 5 passes through the corresponding clamping member 41 and the corresponding mounting plate 2 to connect the mounting plate 2 and the support rod 1 into a whole. The first locking member 5 includes a first stop member 51 and a locking rod 52. The support rod 1 has a weight-reducing hole 1a to reduce the weight of the support rod 1. The locking rod 52 is threadedly connected to the support rod 1, which not only reduces the size of the support rod 1 along the axis but also facilitates the connection between the locking rod 52 and the support rod 1. The support rod 1 is disposed between the battery cell 3 and the corresponding clamping device 4 to reduce the interference of the support rod 1 on the arrangement of the battery monomer 31. The battery monomer assembly further includes a first baffle 7 and a second baffle 8. The first baffle 7 can limit the battery cell 3 in the second direction, and the second baffle 8 can limit the battery cell 3 in the third direction to improve the stability of the battery monomer assembly. The first baffle 7 is disposed between the battery cell 3 and the corresponding support rod 1 to reduce the interference of the support rod 1 on the arrangement of the battery monomer 31. The battery monomer assembly further includes a temperature sensor 9 to facilitate measuring the temperature of the battery monomer 31 in the battery monomer assembly. The battery monomer assemblies can be arranged along the axial direction of the support rod 1 to expand the battery device to a more reasonable size to improve the applicability of the battery device.

[0128] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery cell component, characterized in that, Comprising: Support rod; Mounting plates, the opposite ends of the support rod are each provided with the mounting plates, and the support rod is supported between the two mounting plates at both ends to limit the two mounting plates at both ends from approaching each other; Battery unit, clamped between the two mounting plates at both ends, and the battery unit includes one or at least two battery cells; Clamping device, spanning across the two mounting plates at both ends, the clamping device is respectively connected to the two mounting plates at both ends, and the support rod is provided on one side of the battery unit corresponding to the clamping device.

2. The battery cell assembly according to claim 1, characterized in that, The clamping device includes: Clamping members, each mounting plate at each end is connected to the corresponding clamping member, and in the axial projection along the support rod, the projection area of the support rod is located within the projection area of the clamping member; Transition members, respectively connected to the clamping members at both ends.

3. The battery cell assembly according to claim 2, characterized in that, The battery cell assembly further includes a first locking member, the first locking member passes through the corresponding clamping member and the corresponding mounting plate, and the first locking member is connected to the support rod to clamp the corresponding clamping member and the corresponding mounting plate between the first locking member and the support rod.

4. The battery cell assembly according to claim 3, wherein, The first locking members are provided at both ends of the support rod, and the first locking member includes: First stop member, abutting against the side of the corresponding clamping member facing away from the mounting plate; Locking rod, one end of the locking rod is connected to the first stop member, and the other end of the locking rod is threadedly connected to the support rod to clamp the corresponding clamping member and the corresponding mounting plate between the first stop member and the support rod.

5. The battery cell assembly according to claim 4, wherein, The support rod has a weight reduction hole, the weight reduction hole axially penetrates the support rod along the axial direction of the support rod, the inner wall of the weight reduction hole has internal threads, the locking rod has external threads that are screwed with the internal threads, and the first locking members at both ends are arranged at intervals.

6. The battery cell assembly according to claim 2, characterized in that, The battery cell assembly includes a second locking member, and the second locking member includes: Pull rod, the support rod is a hollow rod, the support rod is axially sleeved on the pull rod, and both ends of the pull rod in the axial direction respectively pass through the corresponding mounting plate and the corresponding clamping member; Second stop member, connected to the pull rod to clamp the corresponding clamping member and the corresponding mounting plate between the second stop members, and along the axial direction of the pull rod, at least one end of the second stop member has a locking function to lock the corresponding mounting plate.

7. The battery cell assembly according to claim 1, characterized in that, Along the axial direction of the support rod, the side of the mounting plate close to the support rod has a convex platform, and both ends of the support rod in the axial direction are abutted against the convex platform.

8. The battery cell assembly according to any one of claims 1 to 7, characterized in that, The arrangement direction of the two mounting plates at both ends is the first direction, clamping devices are provided on both opposite sides of the battery unit in the second direction, the second direction is arranged crosswise with the first direction, the support rods on both sides are located between the clamping devices on both sides, and the battery unit is located between the support rods on both sides.

9. The battery cell assembly according to claim 8, wherein, The battery cell assembly further includes a first baffle, the first baffles are provided on both opposite sides of the battery unit in the second direction, each first baffle abuts against the corresponding battery cell in the battery unit, and each first baffle is clamped between the two mounting plates at both ends.

10. The battery cell assembly according to claim 9, wherein, The first baffles on both sides are located between the support rods on both sides.

11. The battery cell assembly according to claim 8, wherein, The battery cell assembly further includes a second baffle. The second baffle is disposed on opposite sides of the battery cell along a third direction, which intersects the first direction and the second direction respectively. Each side of the second baffle abuts against the corresponding battery monomer in the battery cell, and each side of the second baffle is clamped between the two end mounting plates.

12. The battery cell assembly according to claim 11, wherein, The shape of the battery monomer is cylindrical, the axis of the cylindrical battery monomer is arranged along the first direction, at least one end of the battery monomer along the first direction has a pole column, the second baffle is formed with a mounting hole, and the battery cell assembly further includes a temperature sensor passing through the mounting hole, and the temperature sensor contacts the outer shell of the corresponding battery monomer.

13. A battery device, characterized in that, Comprising: A box body; The battery cell assembly according to any one of claims 1 to 10, wherein the battery cell assembly is disposed in the box body.

14. The battery device according to claim 13, characterized in that, The number of the battery cell assemblies is at least two, and at least two battery cell assemblies are arranged along the axial direction of the support rod.

Images