Energy storage device and method of assembling same
By designing locking components and unlocking parts in energy storage equipment, and using elastic parts to drive the locking parts to fix the limiting parts, the problems of instability and operation difficulty between modules in energy storage equipment are solved, and convenient and stable modules are achieved Group fixed.
Patent Information
- Application Number
- CN202411216200.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2024-12-10
AI Technical Summary
The center of gravity of multiple battery modules in the energy storage device increases after stacking, and the structure is unstable, resulting in relative movement and separation between modules, making the operation difficult and cumbersome.
Design an energy storage device, using the locking assembly, including locking parts, elastic parts and fixing parts, and drives the locking parts and limiting parts to achieve convenient fixing between the modules, combining the design of support and unlocking parts to ensure Accuracy and convenience of the fixing process.
It improves the convenience of fixing the battery module, simplifies the operation process, reduces the difficulty of operation, enhances structural stability, and reduces wear and complexity during subsequent module replacement.
Smart Images
Figure CN119108739A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage device and an assembly method thereof. Background Art
[0002] Energy storage devices generally include multiple (two or more) modules. In the related art, multiple modules in energy storage devices can be assembled together by stacking. However, when multiple battery modules are stacked to a certain extent, the center of gravity of the energy storage device rises, and its internal structure is unstable. It is easy for two battery modules to move relative to each other, resulting in undesirable separation between battery modules. Although the whole of multiple battery modules can be fixed after stacking, when the number of battery modules is large, this method is difficult to operate and cumbersome. Summary of the invention
[0003] The inventor of the present application has found through research that the battery modules can be fixed when they are stacked, and the battery modules can be fixed after the stacking is completed, which is conducive to improving the convenience of fixing the battery modules. To this end, in view of this, the present application provides an energy storage device and an assembly method thereof that is conducive to conveniently fixing the battery modules.
[0004] In a first aspect of the present application, there is provided an energy storage device, comprising a first module and a second module, wherein the first module comprises a first shell and a limiter, and the limiter is arranged on the first shell. The second module is configured to be stacked on the first module along a first direction, and the second module comprises a second shell and a locking assembly, and the locking assembly is arranged on the second shell. The locking assembly comprises a locking member, an elastic member and a fixing member, and the locking member is configured to be movable relative to the second shell and fixed to the limiter. The elastic member is configured to drive the locking member to move toward the limiter so that the locking member is fixed to the limiter. The fixing member fixes the elastic member and the second shell, and the elastic member is located between the locking member and the fixing member.
[0005] In the above embodiment, when stacking, the elastic member drives the locking member to move toward the limiting member to fix the locking member and the limiting member, and the second module and the first module are fixed simultaneously when the second module and the first module are stacked, which is conducive to improving the convenience of fixing.
[0006] In one or more of the above embodiments, the locking assembly includes a support member fixed to the locking member, the support member is disposed through the elastic member, the fixing member includes a first hole, a portion of the support member is located in the first hole, the support member is configured to pass through the first hole, and move relative to the first hole.
[0007] In the above embodiment, when stacking, the cooperation between the support member and the first hole is conducive to guiding the elastic member to drive the locking member to move toward the limiting member, thereby facilitating improving the accuracy of fixing the locking member and the limiting member.
[0008] In one or more of the above embodiments, the second module includes an unlocking member, the unlocking member is fixed to the locking member, the second housing is provided with a slide groove, and the unlocking member is configured to be movable relative to the slide groove.
[0009] In the above embodiment, by controlling the unlocking member to slide in the slide groove, it is helpful to control the locking member to move relative to the limiting member, thereby facilitating the release of the locking member from the limiting member.
[0010] In one or more of the above embodiments, the limiting member includes a connecting portion and a limiting portion, the connecting portion is fixed to the first housing, and the limiting portion is connected to the connecting portion. The locking member is configured to abut against a surface of the limiting portion close to the first housing.
[0011] In the above embodiment, when stacking is completed, it is helpful to fix the locking member and the limiting portion.
[0012] In one or more of the above embodiments, the limiting member has a first contact surface, the locking member has a second contact surface, and the first contact surface and / or the second contact surface are arc surfaces. The second contact surface is configured to abut against the first contact surface to move the locking member away from the limiting member.
[0013] In the above embodiment, the locking member moves away from the limiting member, so that the elastic member accumulates elastic potential energy. When the locking member moves to the second contact surface and cancels the abutment with the first contact surface, the elastic member releases the elastic potential energy to drive the locking member to move toward the limiting member. The first contact surface and / or the second contact surface is an arc surface, which is conducive to improving the smoothness of the abutment between the second contact surface and the first contact surface, and is conducive to reducing the wear when the second contact surface abuts against the first contact surface, so as to facilitate the subsequent replacement of the battery module and stacking again.
[0014] In one or more of the above embodiments, the elastic member includes a spring.
[0015] In the above embodiment, the two ends of the spring are easily fixed to the locking member and the fixing member respectively, which is helpful to simplify the structure of the locking assembly.
[0016] In one or more of the above embodiments, the elastic member surrounds the supporting member and abuts between the locking member and the fixing member.
[0017] In the above embodiment, along the extension and contraction direction of the elastic member, the locking member and the fixing member limit the detachment of the elastic member; along the extension and contraction direction perpendicular to the elastic member, the supporting member limits the detachment of the elastic member, which is beneficial to limit the detachment of the elastic member, thereby facilitating improving the structural stability of the locking assembly.
[0018] In one or more of the above embodiments, the second shell is provided with a receiving space, and the locking assembly is located in the receiving space.
[0019] In the above embodiment, during the stacking process, the limiting member first enters the receiving space and then contacts the locking assembly, which helps to reduce the contact between the limiting member and the first module, thereby enhancing the protection of the locking assembly.
[0020] In one or more of the above embodiments, the first shell is provided with a convex portion, the second shell is provided with a concave portion, the convex portion is located in the concave portion, along a first direction, the projection of the stopper is separated from the projection of the convex portion, and along a direction opposite to the first direction, the convex portion exceeds the stopper.
[0021] In the above embodiment, during the stacking process, the convex part first enters the concave part, so that the first module and the second module are initially positioned, and as the second module continues to move along the first direction, the limiting member and the locking member come into contact. The initial positioning is achieved by the convex part and the concave part, which is conducive to improving the convenience of fixing the locking member and the limiting member.
[0022] In one or more of the above embodiments, the first module includes a first connector, and the first connector and the stopper are located on the same side of the first module. The second module includes a second connector, and the second connector is plug-connected to the first connector.
[0023] In the above embodiment, by stacking the second module on the first module, not only the second module and the first module can be fixed, but also the second connector and the first connector can be conveniently connected.
[0024] In one or more of the above embodiments, the elastic member and the locking member are arranged along the second direction, the first direction is perpendicular to the second direction, and the first direction is the direction of gravity.
[0025] In the above embodiment, when stacking, the second module is stacked on the first module along the gravity direction. Under the action of gravity, the second module compresses the elastic member, and the locking member and the limiting member are fixed, making the fixing process of the first module and the second module more convenient.
[0026] In one or more of the above embodiments, the first module includes a transfer member, the limiting member is fixed to the transfer member, and the transfer member is fixed to the first shell.
[0027] In the above embodiment, the limiting member is conveniently fixed to the first housing by the adapter.
[0028] In one or more of the above embodiments, before the limiting member and the locking assembly are fixed, part of the supporting member is located in the first hole.
[0029] In the above embodiment, it is advantageous for the support member to move along the first hole during the stacking process.
[0030] In one or more of the above embodiments, the elastic member abuts against a surface of the second portion close to the limiting member, and the elastic member is separated from the first hole.
[0031] In the above embodiment, the elastic member is facilitated to be compressed and release elastic potential energy.
[0032] In one or more of the above embodiments, the unlocking member includes an anti-slip stripe, and the anti-slip stripe is arranged on a side of the unlocking member away from the locking member.
[0033] In the above embodiment, when the unlocking member is operated to control the locking member, the anti-slip stripes are helpful to better apply force to the unlocking member.
[0034] In one or more of the above embodiments, the limiting portion protrudes from the periphery of the connecting portion.
[0035] In the above embodiment, when the locking member is located between the surface of the limiting portion close to the connecting portion and the first shell, the protruding portion of the limiting portion and the first shell are conducive to locking the locking member.
[0036] In one or more of the above embodiments, when stacking is completed, the locking element is connected to the adapter.
[0037] The above embodiment is helpful to limit the movement of the locking member.
[0038] In one or more of the above embodiments, along the first direction, the projection of the second contact surface overlaps with the projection of the first contact surface.
[0039] In a second aspect of the present application, a method for assembling an energy storage device is provided, comprising: moving a second module toward a first module along a first direction to prepare for stacking. During the stacking of the second module on the first module, the locking member moves away from the limiting member relative to the second housing so that the elastic member is compressed between the fixing member and the locking member. After the stacking is completed, the elastic member recovers the deformation and drives the locking member to move toward the limiting member so that the locking member is fixed to the limiting member.
[0040] In the above embodiment, the second module and the first module are fixed simultaneously when the second module is stacked with the first module, which is beneficial to improve the convenience of fixing. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1 This is a schematic diagram of a second module before being stacked with a first module according to an embodiment of the present application.
[0042] Figure 2 A schematic diagram of a second module and a first module stacked together according to an embodiment of the present application.
[0043] Figure 3A A schematic diagram of the structure of a second module provided in one embodiment of the present application.
[0044] Figure 3B A schematic diagram of the partial structure of a second module provided in one embodiment of the present application.
[0045] Figure 4 A schematic diagram of the structure of a locking assembly and an unlocking member provided in one embodiment of the present application.
[0046] Figure 5 A schematic diagram of a reference state of a locking assembly and a limiting member before stacking provided in an embodiment of the present application.
[0047] Figure 6 This is a schematic diagram of a reference state in which a locking assembly and a limiting member begin to abut against each other during stacking provided by an embodiment of the present application.
[0048] Figure 7 This is a schematic diagram of a reference state in which the locking assembly and the limiting member are further in contact during stacking according to an embodiment of the present application.
[0049] Figure 8 A schematic diagram of fixing a locking member and a limiting member provided in an embodiment of the present application.
[0050] Main component symbols
[0051] Energy storage equipment 10
[0052] First module 11
[0053] First housing 111
[0054] Projection 1111
[0055] Limiting piece 112
[0056] Connection part 1121
[0057] Limiting part 1122
[0058] Adapter 113
[0059] First connector 114
[0060] Second module 12
[0061] The second housing 121
[0062] Containment Space 1211
[0063] Recess 1212
[0064] Chute 1313
[0065] Locking assembly 122
[0066] Locking piece 1221
[0067] Elastic part 1222
[0068] Fixing 1223
[0069] Part I1223a
[0070] Part II 1223b
[0071] First hole 1223c
[0072] Support 1224
[0073] Second connector 123
[0074] Unlocking piece 124
[0075] Anti-slip stripes 1241
[0076] First contact surface P1
[0077] Second contact surface P2
[0078] First direction D1
[0079] Second direction D2 DETAILED DESCRIPTION
[0080] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.
[0081] It should be noted that, unless otherwise clearly specified and limited, the terms "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. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component at the same time.
[0082] The terms "top," "bottom," and similar expressions are used herein for descriptive purposes only.
[0083] Unless otherwise specified, the term "plurality" as used herein means two or more than two.
[0084] The terms "first", "second", etc. are only used to distinguish different objects and shall not be understood as indicating or implying relative importance or implying the quantity, specific order or primary and secondary relationship of the indicated technical features.
[0085] The term "perpendicular" is used to describe an ideal state between two components. In actual production or use, two components may be in a state that is approximately perpendicular to each other. For example, in combination with numerical descriptions, perpendicularity may refer to the angle between two straight lines being in the range of 90°±10°, perpendicularity may also refer to the dihedral angle between two planes being in the range of 90°±10°, and the perpendicular first module may refer to the angle between a straight line and a plane being in the range of 90°±10°.
[0086] The term "parallel" is used to describe an ideal state between two components. In actual production or use, two components may be approximately parallel. For example, in combination with numerical descriptions, parallel can refer to the angle between two straight lines being between 180°±10°, parallel can also refer to the dihedral angle between two planes being between 180°±10°, and parallel first module can refer to the angle between a straight line and a plane being between 180°±10°.
[0087] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0088] In the related art, although multiple battery modules in the energy storage device can be fixed as a whole after stacking, when the number of battery modules is large, this method is difficult and cumbersome to operate.
[0089] The present application discloses an energy storage device, including a first module and a second module, wherein the first module includes a first shell and a limiter, and the limiter is disposed on the first shell. The second module is configured to be stacked on the first module along a first direction, and the second module includes a second shell and a locking assembly, and the locking assembly is disposed on the second shell. The locking assembly includes a locking member, an elastic member, and a fixing member, and the locking member is configured to be movable relative to the second shell and fixed to the limiter. The elastic member is configured to drive the locking member to move toward the limiter so that the locking member is fixed to the limiter. The fixing member fixes the elastic member and the second shell, and the elastic member is located between the locking member and the fixing member.
[0090] During stacking, the elastic member drives the locking member to move toward the limiting member to fix the locking member and the limiting member, and the second module and the first module are fixed simultaneously when the second module and the first module are stacked, which is beneficial to improving the convenience of fixing.
[0091] Some embodiments of the present application will be described below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.
[0092] See also Figure 1 and Figure 2One embodiment of the present application provides an energy storage device 10, including a first module 11 and a second module 12, wherein the second module 12 is configured to be stacked on the first module 11 along a first direction D1. The first module 11 includes but is not limited to a battery module and an electrical module module. The second module 12 includes but is not limited to a battery module and an electrical module module.
[0093] In some embodiments, the first module 11 includes a first housing 111 and a stopper 112, and the stopper 112 is disposed on the first housing 111. Figure 3A and Figure 3B The second module 12 includes a second housing 121 and a locking assembly 122, and the locking assembly 122 is disposed on the second housing 121. The locking assembly 122 cooperates with the limiting member 112 to fix the first module 11 and the second module 12.
[0094] In some embodiments, see Figure 4 The locking assembly 122 includes a locking member 1221, an elastic member 1222, and a fixing member 1223. The locking member 1221 is configured to be movable relative to the second housing 121 and fixed to the stopper 112. The elastic member 1222 is configured to drive the locking member 1221 to move toward the stopper 112 so that the locking member 1221 is fixed to the stopper 112. The fixing member 1223 fixes the elastic member 1222 and the second housing 121, and the elastic member 1222 is located between the locking member 1221 and the fixing member 1223.
[0095] When stacking is completed, the elastic member 1222 drives the locking member 1221 to move toward the limiting member 112 to fix the locking member 1221 and the limiting member 112, and the second module 12 and the first module 11 are fixed at the same time when the second module 12 and the first module 11 are stacked, which is conducive to improving the convenience of fixing.
[0096] In some embodiments, the second shell 121 has the same structure as the first shell 111 , and the second shell 121 is provided with a locking assembly 122 and a limiter 112 , and the setting position of the limiter 112 in the second shell 121 corresponds to the setting position in the first shell 111 .
[0097] In some embodiments, the energy storage device 10 includes a third module (not shown), the third module includes a third housing, and the third housing has the same structure as the second housing 121. The third housing is provided with a locking assembly 122, and the setting position of the locking assembly 122 in the third housing corresponds to the setting position in the second housing 121. In some embodiments, the third module is stacked on the second module 12 along the first direction D1, and the locking assembly 122 of the third module is fixed to the stopper 112 of the second module 12. It is not difficult to understand that the energy storage device 10 can include more modules.
[0098] In some embodiments, see Figures 5 to 7 The elastic member 1222 and the locking member 1221 are arranged at intervals along the second direction D2, the first direction D1 is perpendicular to the second direction D2, and the first direction D1 is the gravity direction. When stacking, the second module 12 is stacked on the first module 11 along the gravity direction. Under the action of gravity, the second module 12 compresses the elastic member 1222, and the locking member 1221 is fixed to the limiting member 112, so that the fixing process of the first module 11 and the second module 12 is more convenient.
[0099] In some embodiments, the stopper 112 is disposed on the first housing 111 by welding, clamping, bonding or screwing. In some embodiments, the stopper 112 and the first housing 111 are integrally formed.
[0100] In some embodiments, see Figure 1 The first module 11 includes a transfer member 113, the limiting member 112 is fixed to the transfer member 113, and the transfer member 113 is fixed to the first housing 111. The transfer member 113 is used to facilitate fixing the limiting member 112 to the first housing 111.
[0101] In some embodiments, see Figure 3B The second housing 121 is provided with a receiving space 1211, and the locking assembly 122 is located in the receiving space 1211. During the stacking process, the limiting member 112 first enters the receiving space 1211 and then contacts the locking assembly 122, which is beneficial to reduce the contact between the limiting member 112 and the first module 11, thereby enhancing the protection of the locking assembly 122.
[0102] The locking assembly 122 is disposed inside the second housing 121. When the locking member 1221 and the limiting member 112 are fixed, it is helpful to reduce the situation where the locking member 1221 and the limiting member 112 are unlocked due to accidental touch.
[0103] See also Figure 1 The first shell 111 has a convex portion 1111, and the second shell 121 has a concave portion 1212 (see Figure 3A ), the convex part 1111 is located in the concave part 1212. Along the first direction D1, the projection of the stopper 112 is separated from the projection of the convex part 1111, and along the direction opposite to the first direction D1, the convex part 1111 exceeds the stopper 112. During the stacking process, the convex part 1111 first enters the concave part 1212, so that the first module 11 and the second module 12 are initially positioned, and as the second module 12 continues to move along the first direction D1, the stopper 112 and the locking member 1221 contact. The initial positioning is achieved by the convex part 1111 and the concave part 1212, which is conducive to improving the convenience of fixing the locking member 1221 and the stopper 112.
[0104] In some embodiments, the protruding direction of the protrusion 1111 and the recessed direction of the recess 1212 are parallel to the first direction D1 , which is beneficial for preliminary positioning of the second module 12 and the first module 11 on a plane perpendicular to the first direction D1 .
[0105] In some embodiments, the convex portion 1111 and the concave portion 1212 in the first shell 111 and the second shell 121 are swapped, the first shell 111 is provided with the concave portion 1212 , and the second shell 121 is provided with the convex portion 1111 .
[0106] In some embodiments, the second shell 121 has the same structure as the first shell 111 , and the second shell 121 is provided with a recess 1212 and a protrusion 1111 , and the setting position of the protrusion 1111 in the second shell 121 corresponds to the setting position in the first shell 111 .
[0107] In some embodiments, see Figure 1 , the first module 11 includes a first connector 114, and the first connector 114 and the stopper 112 are located on the same side of the first module 11. In some embodiments, see Figure 3A The second module 12 includes a second connector 123, and the second connector 123 is plug-connected with the first connector 114. By stacking the second module 12 on the first module 11, not only can the second module 12 and the first module 11 be fixed, but also the second connector 123 and the first connector 114 can be conveniently connected.
[0108] In some embodiments, the first connector 114 and the second connector 123 are hot-plug connectors to achieve electrical connection between the first module 11 and the second module 12 .
[0109] In some embodiments, the elastic member 1222 includes a spring. The two ends of the spring are easily fixed to the locking member 1221 and the fixing member 1223, respectively, which is conducive to simplifying the structure of the locking assembly 122. In other embodiments, the elastic member 1222 is a spring or other elastically deformable component.
[0110] In some embodiments, two repelling magnetic members are used instead of the elastic member 1222 to drive the locking member 1221 to move. One magnetic member is disposed on the fixing member 1223, and the other magnetic member is disposed on the locking member 1221, and the locking member 1221 is driven to move by the mutual repulsion of the two magnetic members.
[0111] In some embodiments, the elastic member 1222 is directly fixed to the second housing 121. In some embodiments, the elastic member 1222 is fixed to the second housing 121 via a fixing member 1223.
[0112] In some embodiments, see Figure 4The fixing member 1223 is fixed to the second housing 121 through the first fastener 101. The first fastener 101 passes through the fixing member 1223 and is partially inserted into the second housing 121. In other embodiments, the fixing member 1223 and the second housing 121 are welded or bonded.
[0113] In some embodiments, see Figure 4 The fixing member 1223 includes a first portion 1223a and a second portion 1223b. The first portion 1223a is perpendicular to the second portion 1223b, and the second portion 1223b is perpendicular to the extension direction of the elastic member 1222. The first portion 1223a is fixed to the second housing 121, and the second portion 1223b connects the elastic member 1222 and the first portion 1223a. The second portion 1223b provides a support plane for the elastic member 1222, which is conducive to the elastic member 1222 to better drive the locking member 1221.
[0114] In some embodiments, the first fastener 101 passes through the first portion 1223a and is partially inserted into the second housing 121, and fixes the first portion 1223a and the second housing 121. In other embodiments, the first portion 1223a and the second housing 121 are welded or bonded.
[0115] In some embodiments, see Figure 4 The locking assembly 122 includes a supporting member 1224, and the supporting member 1224 is fixed to the locking member 1221. The fixing member 1223 includes a first hole 1223c, and a portion of the supporting member 1224 is located in the first hole 1223c. The supporting member 1224 is configured to pass through the first hole 1223c and move relative to the first hole 1223c.
[0116] When stacking, the cooperation between the support member 1224 and the first hole 1223 c helps to guide the elastic member 1222 to drive the locking member 1221 to move toward the limiting member 112 , thereby helping to improve the accuracy of fixing the locking member 1221 and the limiting member 112 .
[0117] See also Figure 5 Before the limiting member 112 and the locking assembly 122 are fixed, part of the supporting member 1224 is located in the first hole 1223c, which is beneficial for the supporting member 1224 to move along the first hole 1223c during the stacking process.
[0118] In some embodiments, the support member 1224 is fixed to the locking member 1221 by welding, clamping, bonding or screwing.
[0119] In some embodiments, the elastic member 1222 abuts against the surface of the second portion 1223b close to the stopper 112, and the elastic member 1222 and the first hole 1223c are separated, which is conducive to the elastic member 1222 being compressed and releasing elastic potential energy.
[0120] In some embodiments, the support member 1224 is inserted into the elastic member 1222 , which helps the support member 1224 to better support the elastic member 1222 and helps save the space occupied by the support member 1224 .
[0121] In some embodiments, see Figure 4 , the first hole 1223c is disposed in the second portion 1223b.
[0122] In some embodiments, see Figures 5 to 8 The elastic member 1222 surrounds the support member 1224 and abuts between the locking member 1221 and the fixing member 1223. Along the extension direction of the elastic member 1222, the locking member 1221 and the fixing member 1223 restrict the elastic member 1222 from being disengaged; along the extension direction perpendicular to the elastic member 1222, the support member 1224 restricts the elastic member 1222 from being disengaged, which is beneficial to restricting the elastic member 1222 from being disengaged, thereby facilitating improving the structural stability of the locking assembly 122.
[0123] In some embodiments, please refer to Figure 1 and Figure 4 The second module 12 includes an unlocking member 124 , and the unlocking member 124 is fixed to the locking member 1221 .
[0124] In some embodiments, see Figure 1 The second housing 121 is provided with a slide groove 1213, and the unlocking member 124 is configured to be movable relative to the slide groove 1213. By controlling the unlocking member 124 to slide in the slide groove 1213, it is beneficial to control the locking member 1221 to move relative to the limiting member 112, thereby facilitating the release of the fixing of the locking member 1221 and the limiting member 112.
[0125] In some embodiments, the unlocking member 124 is fixed to the locking member 1221 by at least one of welding, clamping, bonding or screwing.
[0126] In some embodiments, see Figure 4 The second module 12 includes a second fastener 102 , which passes through the locking member 1221 and is partially inserted into the unlocking member 124 . The second fastener 102 fixes the locking member 1221 and the unlocking member 124 .
[0127] In some embodiments, see Figure 8 The unlocking member 124 includes an anti-slip stripe 1241, which is disposed on a side of the unlocking member 124 away from the locking member 1221. When the unlocking member 124 is operated to control the locking member 1221, the anti-slip stripe 1241 is used to better apply force to the unlocking member 124.
[0128] In some embodiments, see Figures 5 to 8 The limiting member 112 includes a connecting portion 1121 and a limiting portion 1122. The connecting portion 1121 is fixed to the first housing 111, and the limiting portion 1122 is connected to the connecting portion 1121. The locking member 1221 is configured to abut against a surface of the limiting portion 1122 close to the first housing 111. When stacking is completed, it is beneficial to fix the locking member 1221 and the limiting portion 1122.
[0129] In some embodiments, the limiting portion 1122 protrudes from the periphery of the connecting portion 1121. When the locking member 1221 is located between the surface of the limiting portion 1122 close to the connecting portion 1121 and the first housing 111, the protruding portion of the limiting portion 1122 and the first housing 111 facilitate the locking member 1221 to be locked.
[0130] In some embodiments, when stacking is completed, the locking member 1221 is connected to the adapter 113 , which helps to limit the movement of the locking member 1221 .
[0131] In some embodiments, see Figures 5 to 7 The limiting member 112 has a first contact surface P1, and the locking member 1221 has a second contact surface P2. The second contact surface P2 is configured to abut against the first contact surface P1, so that the locking member 1221 moves away from the limiting member 112.
[0132] The locking member 1221 moves away from the limiting member 112, so that the elastic member 1222 accumulates elastic potential energy. When the locking member 1221 moves to the second contact surface P2 and the first contact surface P1 are no longer in contact, the elastic member 1222 releases the elastic potential energy to drive the locking member 1221 to move toward the limiting member 112.
[0133] In some embodiments, the second contact surface P2 and the first contact surface P1 are no longer in contact with each other, which means that when stacked, the locking member 1221 gradually becomes lower than the limiting portion 1122 along the first direction D1, and when the locking member 1221 is completely lower than the limiting portion 1122, the second contact surface P2 and the first contact surface P1 are no longer in contact with each other.
[0134] In some embodiments, the first contact surface P1 and / or the second contact surface P2 is a curved surface, which is beneficial to improve the smoothness of the second contact surface P2 abutting against the first contact surface P1 and reduce the wear of the second contact surface P2 abutting against the first contact surface P1, thereby facilitating subsequent stacking after replacing the battery module.
[0135] In some embodiments, the first contact surface P1 is disposed on the limiting portion 1122 .
[0136] Before stacking, the elastic member 1222 has an initial state. In some embodiments, the initial state of the elastic member 1222 is a state without elastic deformation. In some embodiments, before stacking, the elastic member 1222 has no elastic potential energy. During stacking, the elastic member 1222 first accumulates elastic potential energy and then releases the elastic potential energy to drive the locking member 1221 to move toward the limiting member 112. Figures 5 to 8 , which illustrates the process of stacking the elastic member 1222 to first accumulate elastic potential energy and then release the elastic potential energy, thereby fixing the locking member 1221 and the limiting member 112.
[0137] See also Figure 5 Before stacking, the initial state of the elastic member 1222 is a state without elastic deformation, and along the first direction D1, the projection of the second contact surface P2 overlaps with the projection of the first contact surface P1. Figure 6 and Figure 7 During the stacking process, the second contact surface P2 begins to abut against the first contact surface P1, and the abutment of the limiting portion 1122 on the locking member 1221 causes the locking member 1221 to move away from the limiting portion 112, and the elastic member 1222 is compressed by the locking member 1221 to accumulate elastic potential energy. Along the first direction D1, when the locking member 1221 is lower than the limiting portion 1122, the limiting portion 1122 releases the abutment against the locking member 1221, so that the elastic member 1222 releases the elastic potential energy to drive the locking member 1221 to move toward the limiting member 112, so that the locking member 1221 and the limiting member 112 are fixed. Therefore, the fixing can be completed synchronously by stacking, which improves the convenience of fixing.
[0138] It is understandable that by adaptively adjusting the positions of the second contact surface P2 and the first contact surface P1 , the elastic member 1222 can also be stretched by the locking member 1221 to accumulate elastic potential energy when stacking.
[0139] In some embodiments, the initial state of the elastic member 1222 is a state of elastic deformation. In some embodiments, before stacking, the elastic member 1222 accumulates elastic potential energy. When stacking, the elastic member 1222 further accumulates elastic potential energy. Since the accumulated elastic potential energy is greater, after the elastic member 1222 releases the elastic potential energy, it is helpful to drive the locking member 1221 to move toward the limiting member 112 more quickly, thereby facilitating the locking member 1221 to be fixed to the limiting member 112 more quickly.
[0140] The present application provides an assembly method of the energy storage device 10 as described in any of the above embodiments, comprising the following steps:
[0141] S1: moving the second module 12 toward the first module 11 along the first direction D1 to prepare for stacking.
[0142] S2: When the second module 12 is stacked on the first module 11 , the locking member 1221 moves away from the limiting member 112 relative to the second housing 121 , so that the elastic member 1222 is compressed between the fixing member 1223 and the locking member 1221 .
[0143] S3: After the stacking is completed, the elastic member 1222 recovers its deformation and drives the locking member 1221 to move toward the limiting member 112 , so that the locking member 1221 is fixed to the limiting member 112 .
[0144] In some embodiments, the first direction D1 is the direction of gravity. When stacking, the second module 12 is naturally stacked on the first module 11 along the direction of gravity, which is labor-saving and relatively simple. After stacking is completed, the locking member 1221 and the limiting member 112 are naturally fixed.
[0145] In some embodiments, step S2 includes step S201 : when the second module 12 is stacked on the first module 11 , the locking member 1221 is brought into contact with the limiting portion 1122 .
[0146] In some embodiments, in step S201 , the second contact surface P2 of the locking member 1221 abuts against the first contact surface P1 of the limiting portion 1122 .
[0147] In some embodiments, step S3 includes step S301: after stacking is completed, the locking member 1221 cancels the abutment with the limiting portion 1122 , which is conducive to the elastic member 1222 restoring its deformation and driving the locking member 1221 to move toward the limiting member 112 .
[0148] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to limit the present application. As long as they are within the essential scope of the present application, appropriate changes and modifications to the above embodiments are within the scope disclosed in the present application.
Claims
1. An energy storage device, characterized in that: include: A first module, comprising a first shell and a limiting member, wherein the limiting member is arranged on the first shell; The second module is configured to be stacked on the first module along a first direction, the second module includes a second housing and a locking assembly, the locking assembly is disposed on the second housing, and the locking assembly includes: A locking member, configured to be movable relative to the second housing and fixed to the limiting member; an elastic member, configured to drive the locking member to move toward the limiting member so that the locking member is fixed to the limiting member; A fixing member fixes the elastic member and the second shell, wherein the elastic member is located between the locking member and the fixing member.
2. The energy storage device according to claim 1, characterized in that: The locking assembly comprises a supporting member fixed to the locking member, and the supporting member is penetrated through the elastic member; The fixing member includes a first hole, a portion of the supporting member is located in the first hole, and the supporting member is configured to pass through the first hole and move relative to the first hole.
3. The energy storage device according to claim 1 or 2, characterized in that: The second module comprises an unlocking member, the unlocking member is fixed to the locking member, the second housing is provided with a slide groove, and the unlocking member is configured to be movable relative to the slide groove.
4. The energy storage device according to any one of claims 1 to 3, characterized in that: The limiting member includes a connecting portion and a limiting portion, the connecting portion is fixed to the first shell, and the limiting portion is connected to the connecting portion; The locking element is configured to abut against a surface of the limiting portion close to the first shell.
5. The energy storage device according to claim 4, characterized in that: The limiting member has a first contact surface, the locking member has a second contact surface, and the first contact surface and / or the second contact surface are arc surfaces; The second contact surface is configured to abut against the first contact surface so that the locking member moves away from the limiting member.
6. The energy storage device according to any one of claims 1 to 5, characterized in that: The elastic member includes a spring.
7. The energy storage device according to claim 6, characterized in that: The elastic member surrounds the supporting member and abuts between the locking member and the fixing member.
8. The energy storage device according to any one of claims 1 to 7, characterized in that: The second shell is provided with a receiving space, and the locking assembly is located in the receiving space.
9. The energy storage device according to any one of claims 1 to 8, characterized in that: The first shell is provided with a convex portion, the second shell is provided with a concave portion, and the convex portion is located in the concave portion; Along the first direction, the projection of the limiting member is separated from the projection of the convex portion, and along a direction opposite to the first direction, the convex portion exceeds the limiting member.
10. The energy storage device according to any one of claims 1 to 9, characterized in that: The first module includes a first connector, and the first connector and the limiting member are located on the same side of the first module; The second module includes a second connector, and the second connector is plug-connected to the first connector.
11. The energy storage device according to any one of claims 1 to 10, characterized in that: The elastic member and the locking member are arranged along a second direction, the first direction is perpendicular to the second direction, and the first direction is a gravity direction.
12. A method for assembling an energy storage device according to any one of claims 1 to 11, characterized in that: include: moving the second module toward the first module along the first direction to prepare for stacking; When the second module is stacked on the first module, the locking member moves away from the limiting member relative to the second housing, so that the elastic member is compressed between the fixing member and the locking member; After the stacking is completed, the elastic member recovers its deformation and drives the locking member to move toward the limiting member, so that the locking member is fixed to the limiting member.