Battery formation and capacity grading equipment

Abstract

The utility model discloses battery formation and capacity grading equipment, which comprises a fixing frame, two groups of probe assemblies and a power supply module, and is characterized in that the fixing frame is used for placing a to-be-processed battery; the two groups of probe assemblies are movably arranged on the fixing frame, the two groups of probe assemblies can move face to face or back to back in a first direction, the two groups of probe assemblies can move relative to the fixing frame in a second direction, so that the two groups of probe assemblies can leave the fixing frame, and the second direction is perpendicular to the first direction; the power module is electrically connected with the probe assembly and can be movably arranged on the fixing frame in the second direction so that the power module can leave the fixing frame. The maintenance convenience of the power module, the pressing mechanism and the like can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a battery capacity conversion device. Background Art

[0002] After assembly, the battery needs to be charged for the first time to activate the active materials in the lithium battery, and this process is called "formation". In addition, the lithium battery is charged and discharged, and the capacity of the lithium battery is determined by testing the discharge capacity of the lithium battery when it is fully charged. The process of screening or grading lithium batteries is called "capacity grading".

[0003] Generally, batteries are formed and capacitated by battery capacity-splitting equipment, which includes a power module and a probe assembly. When at least one of the power module and the probe assembly fails and requires maintenance, the installation space between the components in the battery capacity-splitting equipment is compact, which causes inconvenience in the maintenance of the power module and the probe assembly. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a battery capacity component device, which can improve the maintenance convenience of the power module and the probe assembly.

[0005] In order to solve the above technical problems, in a first aspect, the utility model provides a battery capacity conversion device, comprising:

[0006] A fixing frame, on which batteries to be processed are placed;

[0007] Two groups of probe assemblies, the two groups of probe assemblies are movably arranged on the fixing frame, the two groups of probe assemblies can move toward or away from each other in a first direction, the two groups of probe assemblies can move relative to the fixing frame in a second direction so that the two groups of probe assemblies can leave the fixing frame, and the second direction is perpendicular to the first direction;

[0008] A power module is electrically connected to the probe assembly and is movably disposed on the fixing frame along the second direction so that the power module can leave the fixing frame.

[0009] In a possible implementation, the probe assembly includes a mounting beam and a pressing mechanism, the mounting beam is movably disposed on the fixing frame along the first direction, and the pressing mechanism is movably disposed on the mounting beam along the second direction and is electrically connected to the power module.

[0010] In a possible implementation, the pressing end of the pressing mechanism is arranged on the mounting beam, the pressing end is fixed relative to the mounting beam in the first direction and movable relative to the mounting beam in the second direction, and the connecting end of the pressing mechanism is electrically connected to the power module.

[0011] In a possible implementation, the battery capacity conversion device further includes a support frame, the support frame is movably disposed on the fixing frame along the second direction, and the power module is installed on the support frame.

[0012] In one possible implementation, a connecting plate that is movable relative to the mounting beam along the second direction is provided on the mounting beam, and the connecting plate is connected to the support frame via a guide and limiting structure, and the guide and limiting structure can guide the mounting beam along the first direction and limit the mounting beam along the second direction.

[0013] In one possible implementation, the guide and limiting structure includes a guide hole provided on the support frame and a guide shaft provided on the connecting plate on the mounting beam, the axial direction of the guide hole extends in the first direction, the pressing end is fixed on the connecting plate, and the guide shaft can be movably inserted in the guide hole.

[0014] In a possible implementation, a linear bearing is provided on the support frame, and the guide shaft is movably connected to the guide hole through the linear bearing.

[0015] In a possible implementation manner, a first guide structure is provided between the connecting plate and the mounting beam, and the first guide structure guides along the second direction.

[0016] In a possible implementation, the first guide structure includes a guide rail and a guide member slidably connected to the guide rail, and one of the guide rail and the guide member is disposed on the connecting plate, and the other is disposed on the mounting beam.

[0017] In a possible implementation, one of the support frame and the fixed frame is provided with a guide protrusion, and the other is provided with a guide limit groove, the guide protrusion cooperates with the guide limit groove, the guide limit groove guides along the height direction of the fixed frame, and the height direction of the fixed frame is perpendicular to the first direction and the second direction respectively.

[0018] In a possible implementation manner, a second guide structure is provided between the fixing frame and the mounting beam, and the second guide structure guides along the first direction.

[0019] In a possible implementation, the battery capacity conversion device further includes two driving members, and the two driving members are respectively connected to the two mounting beams to respectively drive the two mounting beams to move toward or away from each other along the first direction.

[0020] In a possible implementation, a travel switch is provided on the fixing frame to detect whether the battery to be processed is placed in place.

[0021] In a possible implementation, a heat sink is provided on the fixing frame.

[0022] Compared with the prior art, this application has at least the following beneficial effects:

[0023] Since both groups of probe assemblies can move toward or away from each other relative to the fixing frame in the first direction, and both groups of probe assemblies are electrically connected to the power module, when the two groups of probe assemblies move toward each other relative to the fixing frame in the first direction, the batteries to be processed can be subjected to capacity processing. Since both groups of probe assemblies can move relative to the fixing frame in the second direction so that the two groups of probe assemblies can leave the fixing frame, and the power module can be movably arranged on the fixing frame along the second direction, when the two groups of probe assemblies or the power module fail and need maintenance, the two groups of probe assemblies and / or the power module can be moved out of the fixing frame along the second direction, thereby facilitating the maintenance of the two groups of probe assemblies or the power module.

[0024] It can be seen that if the two sets of probe assemblies or the power module need to be repaired, they can be removed from the fixing frame for operation, avoiding the compact installation space between the components in the battery capacity division equipment that is not conducive to the maintenance of the power module and the probe assembly, thereby improving the convenience of repairing the power module and the probe assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A front view of a battery capacity conversion device provided by an embodiment of the utility model;

[0027] Figure 2 for Figure 1 Side view of the structure inside the middle cabinet;

[0028] Figure 3 A schematic diagram of a pressing mechanism provided in an embodiment of the utility model;

[0029] Figure 4 for Figure 3 A side view of the pressing mechanism;

[0030] Figure 5 A side view of a support frame provided by an embodiment of the utility model;

[0031] Figure 6 A rear view provided for an embodiment of the utility model;

[0032] Figure 7 for Figure 1 Rear view of the structure inside the middle cabinet;

[0033] Figure 8 for Figure 1 Bottom view of the interior structure of the middle cabinet.

[0034] Description of reference numerals:

[0035] 100-battery componentization equipment; 101-probe assembly;

[0036] 110-cabinet;

[0037] 120-fixed frame; 121-heat sink;

[0038] 130-installation beam;

[0039] 140-support frame; 141-guide hole; 142-linear bearing; 143-guide protrusion;

[0040] 150-power module;

[0041] 160-pressing mechanism; 161-pressing end; 162-connecting end;

[0042] 170-driving member;

[0043] 181-connecting plate; 182-guide shaft; 183-travel switch;

[0044] 191 - first guide structure; 192 - second guide structure. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0047] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0048] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0050] The present application is described in detail below through specific embodiments:

[0051] See also Figure 1 and Figure 2 The embodiment of the present application provides a battery capacity conversion device 100, which includes a fixed frame 120, two groups of probe assemblies 101 and a power module 150. The fixed frame 120 is used to place the batteries to be processed. The two groups of probe assemblies 101 can be movably arranged on the fixed frame 120. The two groups of probe assemblies 101 can move toward or away from the fixed frame 120 in a first direction. The two groups of probe assemblies 101 can move relative to the fixed frame 120 in a second direction so that the two groups of probe assemblies 101 can leave the fixed frame 120, and the second direction is perpendicular to the first direction; the power module 150 is electrically connected to the probe assemblies 101, and can be movably arranged on the fixed frame 120 along the second direction so that the power module 150 can leave the fixed frame 120.

[0052] Among them, the above-mentioned fixing frame 120, two sets of probe assemblies 101 and power module 150 are all installed in the cabinet 110. The cabinet 110 can be a cabinet 110 of any shape, such as a rectangular cabinet 110, a cylindrical cabinet 110, etc. The cabinet 110 is hollow inside and has an opening on one side for the installation of components and the placement of batteries to be processed. The batteries to be processed can be sheet batteries, square batteries, etc.

[0053] The first direction mentioned above refers to Figure 1 The direction indicated by the X arrow in the middle, the second direction refers to Figure 2 The first direction and the second direction are both parallel to the display surface of the fixing frame 120.

[0054] In addition, since both groups of probe assemblies 101 can move toward or away from each other relative to the fixing frame 120 in the first direction, and both groups of probe assemblies 101 are electrically connected to the power module 150, when the two groups of probe assemblies 101 move toward each other relative to the fixing frame 120 in the first direction, the batteries to be processed can be subjected to capacity separation treatment. Since both groups of probe assemblies 101 can move relative to the fixing frame 120 in the second direction so that the two groups of probe assemblies 101 can leave the fixing frame 120, and the power module 150 can be movably arranged on the fixing frame 120 along the second direction, when the two groups of probe assemblies 101 or the power module 150 fail and need maintenance, the two groups of probe assemblies 101 and / or the power module 150 can be moved out of the fixing frame along the second direction, thereby facilitating the maintenance of the two groups of probe assemblies 101 or the power module 150.

[0055] It can be seen that if the two sets of probe assemblies 101 or the power module 150 need to be repaired, they can be removed from the fixing frame 120 for operation, avoiding the problem of inconvenience in repairing the power module 150 and the probe assembly 101 due to the compact installation space between the components in the battery capacity splitting device 100, thereby improving the convenience of repairing the power module 150 and the probe assembly 101.

[0056] In some possible embodiments, the probe assembly 101 includes a mounting beam 130 and a pressing mechanism 160 , wherein the mounting beam 130 is movably disposed on the fixing frame 120 along a first direction, and the pressing mechanism 160 is movably disposed on the mounting beam 130 along a second direction and is electrically connected to the power module 150 .

[0057] Since the pressing mechanism 160 is arranged on the mounting beam 130, and the mounting beam 130 can move the fixed frame 120 in the first direction, the two pressing mechanisms 160 can move toward or away from each other along the first direction. Since the pressing mechanism 160 is electrically connected to the power module 150, when the two pressing mechanisms 160 move toward each other to press the battery to be processed, the battery to be processed can be charged or discharged, thereby realizing the formation and capacity separation of the battery to be processed.

[0058] In addition, since the pressing mechanism 160 is movably disposed on the mounting beam 130 along the second direction, when the pressing mechanism 160 fails, the pressing mechanism 160 can be moved out of the mounting beam 130 along the second direction, thereby facilitating maintenance of the pressing mechanism 160.

[0059] In some possible embodiments, see Figure 1 and Figure 3 The pressing end 161 of the pressing mechanism 160 is set on the mounting beam 130, the pressing end 161 is fixed relative to the fixing frame 120 in a first direction and is movable relative to the mounting beam 130 in a second direction, and the connecting end 162 of the pressing mechanism 160 is electrically connected to the power module 150.

[0060] The pressing end 161 of the pressing mechanism 160 refers to an end provided with a probe, which is electrically connected to the pole of the battery to be processed when the pressing mechanism 160 is pressed with the battery to be processed, and the connecting end 162 of the pressing mechanism 160 refers to an end without a probe.

[0061] Since the pressing end 161 of the pressing mechanism 160 is fixed relative to the mounting beam 130 in the first direction, when the driving member 170 drives the pressing mechanism 160 to move along the first direction, the pressing end 161 of the pressing mechanism 160 can move along the first direction relative to the fixing frame 120 to press the battery to be processed.

[0062] Furthermore, since the pressing end 161 of the pressing mechanism 160 is movable in the second direction relative to the mounting beam 130, and the connecting end 162 of the pressing mechanism 160 is electrically connected to the power module 150, when the pressing end 161 of the pressing mechanism 160 moves along the second direction, the pressing mechanism 160 can be moved out of the fixing frame 120, thereby facilitating maintenance of the pressing mechanism 160.

[0063] In some possible embodiments, the battery capacity splitting device further includes a support frame 140 , which is movably disposed on the fixing frame 120 along the second direction, and the power module 150 is installed on the support frame 140 .

[0064] Since the support frame 140 is movably disposed on the fixing frame 120 along the second direction and the power module 150 is installed on the support frame 140, the power module 150 can be moved out of the fixing frame 120 through the support frame 140, thereby ensuring the integrity of the power module 150 moving along the second direction.

[0065] It can be seen from the above embodiments that the support frame 140 and the pressing mechanism 160 can be moved out of the fixing frame 120 separately or as a whole. The following mainly describes in detail the example of moving the support frame 140 and the pressing mechanism 160 as a whole out of the fixing frame 120 for maintenance.

[0066] In some possible embodiments, a connecting plate 181 is provided on the mounting beam 130 and is movable along a second direction relative to the mounting beam 130. The connecting plate 181 is connected to the support frame 140 via a guide and limiting structure. The guide and limiting structure can guide the mounting beam 130 along a first direction and limit the mounting beam 130 along a second direction.

[0067] Therefore, by setting a guiding limit structure, when the connecting plate 181 moves along the first direction with respect to the mounting beam 130, the consistency of the movement trajectory of the pressing end of the pressing mechanism 160 along the first direction is ensured, thereby ensuring the pressing effect on the processed battery. When the connecting plate 181 moves along the second direction, the pressing mechanism 160 and the support frame 140 can move as a whole.

[0068] In some possible embodiments, see Figure 4 and Figure 5 The guide limiting structure includes a guide hole 141 arranged on the support frame 140 and a guide shaft 182 arranged on the connecting plate 181. The guide hole 141 extends along the first direction, the pressing end 161 is fixed on the connecting plate 181, and the guide shaft 182 can be movably inserted into the guide hole 141.

[0069] Since the guide shaft 182 and the pressing end 161 are both arranged on the connecting plate 181, and the connecting plate 181 can move relative to the mounting beam 130, and the guide shaft 182 and the guide hole 141 can be movably matched, therefore, when the pressing end 161 moves along the first direction, the movement path of the pressing end 161 can be guided by the cooperation of the guide shaft 182 and the guide hole 141, thereby ensuring the consistency of the movement trajectory of the pressing end 161 and improving the pressing effect of the pressing end 161 of the pressing mechanism 160 on the processed battery.

[0070] In addition, since the pressing mechanism 160 includes multiple pressing ends 161 , in order to ensure the consistency of movement of the multiple pressing ends 161 , a connecting plate 181 is provided on the mounting beam 130 , and the multiple pressing ends 161 are all connected to the connecting plate 181 .

[0071] In some possible embodiments, see Figure 5 and Figure 6 A linear bearing 142 is provided on the support frame 140 , and the guide shaft 182 is movably connected to the guide hole 141 through the linear bearing 142 .

[0072] Since the linear bearing 142 can convert sliding friction into rolling friction, when the guide shaft 182 is movably connected to the guide hole 141 through the linear bearing 142, the sliding friction between the guide shaft 182 and the guide hole 141 can be reduced, further improving the pressing effect between the pressing end 161 of the pressing mechanism 160 and the battery to be processed.

[0073] In addition, the linear bearing 142 belongs to the linear bearing 142 in the prior art, and the connection of the linear bearing 142 also belongs to the prior conventional technology. Therefore, the structure and connection relationship of the linear bearing 142 are not described in detail here.

[0074] In some possible embodiments, see Figure 4 A first guide structure 191 is provided between the connecting plate 181 and the mounting beam 130 , and the first guide structure 191 guides along the second direction.

[0075] The first guide structure 191 includes a guide rail and a guide slider slidably matched with the guide rail, or the first guide structure 191 includes a lead screw structure. For example, the guide rail is arranged on the mounting beam 130, and the connecting plate 181 is arranged on the guide slider.

[0076] By setting a first guide structure 191 between the connecting plate 181 and the mounting beam 130, the pressing end 161 of the pressing mechanism 160 can be guided when the connecting plate 181 drives the pressing end 161 to move along the second direction, thereby ensuring the consistency of the movement trajectory of the pressing end 161 of the pressing mechanism 160 in the second direction, and avoiding the situation where the pressing mechanism 160 interferes with other components or the connecting plate 181 is stuck due to the connecting plate 181 deviating from the second direction.

[0077] In some possible embodiments, the first guide structure 191 includes a guide rail and a guide member slidably connected to the guide rail, the guide rail extends along the second direction, one of the guide rail and the guide member is disposed on the connecting plate 181 , and the other is disposed on the mounting beam 130 .

[0078] The guide members include but are not limited to balls, sliders, etc.

[0079] Thus, by sliding the guide member in the guide rail, the connecting plate 181 can slide relative to the mounting beam 130 along the second direction.

[0080] In some possible embodiments, see Figure 5A guide protrusion 143 is provided on one of the support frame 140 and the fixed frame 120, and a guide limit groove (not shown in the figure) is provided on the other. The guide protrusion 143 cooperates with the guide limit groove, and the guide limit groove guides along the height direction of the fixed frame 120. The height direction of the fixed frame 120 is perpendicular to the first direction and the second direction respectively, and the opening direction of the guide limit groove is parallel to the second direction.

[0081] The height direction of the fixing frame 120 refers to Figure 1 The direction is indicated by the Z arrow.

[0082] Since one of the support frame 140 and the fixed frame 120 is provided with a guide protrusion 143 and the other is provided with a guide limit groove, and the guide direction of the guide limit groove is parallel to the height direction of the fixed frame 120, when installing the support frame 140, the accuracy of the installation of the support frame 140 can be improved by cooperating between the guide protrusion 143 and the guide limit groove. At the same time, since the opening direction of the guide limit groove is parallel to the second direction, when the pressing end 161 of the pressing mechanism 160 moves along the first direction, the support frame 140 can be limited by cooperating between the guide protrusion 143 and the guide limit groove, thereby preventing the support frame 140 from moving along the first direction.

[0083] In some possible and embodiments, see Figure 7 A second guide structure 192 is disposed between the fixing frame 120 and the mounting beam 130 , and the second guide structure 192 guides along the first direction.

[0084] The second guide structure 192 includes a guide rail and a guide block matched with the guide rail, or the second guide structure 192 includes a lead screw assembly. For example, the guide rail is arranged on the fixing frame 120, and the mounting beam 130 is arranged on the guide block.

[0085] Since a second guide structure 192 is provided between the fixing frame 120 and the mounting beam 130, when the driving member 170 drives the pressing end 161 of the pressing mechanism 160 to move along the first direction, the consistency of the movement trajectory of the mounting beam 130 can be ensured, thereby avoiding the locking between the mounting beam 130 and the fixing frame 120 due to the deviation of the mounting beam 130 from the first direction or avoiding the interference between the pressing end 161 of the pressing mechanism 160 and other components.

[0086] In some possible embodiments, see Figure 7 The battery capacity conversion device 100 further includes two driving members 170, and the two driving members 170 are respectively connected to the two mounting beams 130 to respectively drive the two mounting beams 130 to move toward or away from each other along the first direction.

[0087] In addition, the driving member 170 may be a structure composed of a telescopic cylinder, a rotary motor and a lead screw.

[0088] By providing two driving members 170 and connecting the two driving members 170 to the two mounting beams 130 respectively, the two mounting beams 130 can be controlled to move along the first direction respectively and independently, thereby improving the flexibility of independently controlling the two mounting beams 130.

[0089] When the driving member 170 drives the two mounting beams 130 to move toward each other, it can drive the pressing end 161 of the pressing mechanism 160 to press the battery to be processed. When the driving member 170 drives the two mounting beams 130 to move away from each other, it can drive the pressing end 161 of the pressing mechanism 160 to move away from the battery to be processed.

[0090] In some possible embodiments, see Figure 7 A travel switch 183 is provided on the fixing frame 120 for detecting whether the battery to be processed is placed in place.

[0091] Among them, the working principle of the travel switch 183 belongs to the prior art and will not be elaborated here.

[0092] Usually, the batteries to be processed are placed in a tray, and then the tray with the batteries to be processed is placed on the fixing frame 120. During the process of placing the tray with the batteries to be processed on the fixing frame 120, if the tray with the batteries to be processed is not placed in place, it is easy to cause the pressing end 161 of the pressing mechanism 160 to be unable to be electrically connected to the batteries to be processed, or the electrical connection stability is poor, thereby affecting the formation and capacity separation of the batteries to be processed. Based on this, in this embodiment, by setting a travel switch 183, it is possible to detect during the process of placing the tray on the fixing frame 120 to determine whether the batteries to be processed are in place, thereby ensuring the formation and capacity separation effect of the batteries to be processed.

[0093] In some possible embodiments, see Figure 8 A heat sink 121 is disposed on the fixing frame 120 .

[0094] A lot of heat will be generated during the formation and capacity separation process of the processed battery. In order to cool the processed battery immediately, a heat sink 121 is provided on the fixing frame 120 to dissipate the heat of the processed battery, thereby improving the formation and capacity separation effect of the processed battery.

[0095] Optionally, the heat sink 121 includes a plurality of heat dissipation fans arranged in an array, and the plurality of heat dissipation fans are located below the batteries to be processed to ensure the heat dissipation effect of the heat dissipation fans on the batteries to be processed.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A battery capacity conversion device, characterized in that: include: A fixing frame (120), the fixing frame (120) being used to place batteries to be processed; Two groups of probe assemblies (101), the two groups of probe assemblies (101) are movably arranged on the fixing frame (120), the two groups of probe assemblies (101) can move towards or away from each other in a first direction, and the two groups of probe assemblies (101) can move relative to the fixing frame (120) in a second direction; A power module (150), the power module (150) is electrically connected to the probe assembly (101) and can be movably arranged on the fixing frame (120) along the second direction.

2. The battery capacity conversion device according to claim 1, characterized in that: The probe assembly (101) comprises a mounting beam (130) and a pressing mechanism (160), wherein the mounting beam (130) is movably disposed on the fixing frame (120) along the first direction, and the pressing mechanism (160) is movably disposed on the mounting beam (130) along the second direction and is electrically connected to the power module (150).

3. The battery capacity conversion device according to claim 2, characterized in that: The pressing end (161) of the pressing mechanism (160) is arranged on the mounting beam (130); the pressing end (161) is fixed relative to the mounting beam (130) in the first direction and is movable relative to the mounting beam (130) in the second direction; and the connecting end (162) of the pressing mechanism (160) is electrically connected to the power module (150).

4. The battery capacity conversion device according to claim 2, characterized in that: The battery capacity conversion device further comprises a support frame (140), the support frame (140) being movably disposed on the fixing frame (120) along a second direction, and the power module (150) being mounted on the support frame (140).

5. The battery capacity conversion device according to claim 4, characterized in that: The mounting beam (130) is provided with a connecting plate (181) movable along the second direction relative to the mounting beam (130); the connecting plate (181) is connected to the supporting frame (140) via a guiding and limiting structure; the guiding and limiting structure is capable of guiding the mounting beam (130) along the first direction and limiting the mounting beam (130) along the second direction.

6. The battery capacity conversion device according to claim 5, characterized in that: The guide limiting structure comprises a guide hole (141) arranged on the support frame (140) and a guide shaft (182) arranged on the connecting plate (181); the guide hole (141) extends along the first direction; the pressing end (161) of the pressing mechanism (160) is fixed on the connecting plate (181); and the guide shaft (182) is movably inserted into the guide hole (141).

7. The battery capacity conversion device according to claim 6, characterized in that: A linear bearing (142) is provided on the support frame (140), and the guide shaft (182) is movably connected to the guide hole (141) via the linear bearing (142).

8. The battery capacity conversion device according to claim 6, characterized in that: A first guide structure (191) is provided between the connecting plate (181) and the mounting beam (130), and the first guide structure (191) guides along the second direction.

9. The battery capacity conversion device according to claim 8, characterized in that: The first guide structure (191) comprises a guide rail and a guide member slidably connected to the guide rail, the guide rail extends along the second direction, one of the guide rail and the guide member is arranged on the connecting plate (181), and the other is arranged on the mounting beam (130).

10. The battery capacity conversion device according to claim 4, characterized in that: One of the support frame (140) and the fixed frame (120) is provided with a guide protrusion (143), and the other is provided with a guide limit groove, the guide protrusion (143) cooperates with the guide limit groove, the guide limit groove guides along the height direction of the fixed frame (120), and the height direction of the fixed frame (120) is respectively perpendicular to the first direction and the second direction.

11. The battery capacity conversion device according to claim 2, characterized in that: A second guide structure (192) is provided between the fixing frame (120) and the mounting beam (130), and the second guide structure (192) guides along the first direction.

12. The battery capacity conversion device according to claim 2, characterized in that: The battery capacity conversion device further comprises two driving members (170), wherein the two driving members (170) are respectively connected to the two mounting beams (130) to respectively drive the two mounting beams (130) to move towards or away from each other along the first direction.

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