Battery

Abstract

The utility model provides a battery, and belongs to the technical field of batteries. The battery comprises a box body, a cover plate, a circuit frame and a plurality of battery cells, the plurality of battery cells and the circuit frame are positioned in the box body, and the plurality of battery cells are electrically connected through the circuit frame; the cover plate covers a box opening of the box body and is fixed to the box body, and the inner surface of the cover plate is further fixed to the circuit frame. By adopting the method and the device, the difficulty of reusing the lost battery is increased, the utilization value of the lost battery is also reduced, and the loss rate can be reduced to a certain extent.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular to a battery. Background Art

[0002] Batteries have a wide range of application scenarios. For example, batteries are deployed in base station rooms and data center rooms.

[0003] Batteries are usually placed in racks in computer rooms in box form. Because they are easy to take out of the racks, battery loss (such as theft) often occurs, especially in remote and unattended computer rooms, where the battery loss rate is relatively high. Utility Model Content

[0004] The present disclosure provides a battery, the cover of the battery is not only fixed to a box body, but also fixed to a circuit rack inside the box body. On the one hand, it is more difficult to remove the cover from the box body, which increases the difficulty of reusing a lost battery and can reduce the loss rate of the battery. On the other hand, because the cover is fixed to the circuit rack, when the cover is forcibly removed from the box opening of the box body, the circuit rack will be damaged, and the battery cannot supply power to the outside through the circuit rack, which increases the difficulty of reusing a lost battery and can reduce the loss rate of the battery.

[0005] In a first aspect, a battery is provided, the battery comprising a box body, a cover plate, a circuit frame and a plurality of battery cells;

[0006] The multiple battery cells and the circuit rack are both located in the box, and the multiple battery cells are electrically connected through the circuit rack;

[0007] The cover plate covers the box opening of the box body and is fixed to the box body, and the inner surface of the cover plate is also fixed to the circuit rack.

[0008] In the scheme shown in the present disclosure, after the battery is lost (such as stolen), the user removes the screws connecting the cover plate and the box body. Since the inner surface of the cover plate is still fixed to the circuit rack, the fixed relationship between the cover plate and the circuit rack is hidden inside the cover plate and cannot be disassembled by tools (such as screwdrivers). Therefore, it is also difficult to remove the cover plate from the box opening of the box body, and the load cannot be connected to the wiring terminal of the circuit rack, and the battery cannot be used again. If the user forcibly removes the cover plate from the box opening of the box body, since the cover plate and the circuit rack have a fixed relationship, the circuit rack will be removed from the box opening together with the cover plate, or the circuit in the circuit rack will be damaged. In either case, the battery can no longer supply power to the outside through the circuit rack. It can be seen that the scheme shown in the present disclosure increases the difficulty of reusing the lost battery, and its utilization value is also reduced, which can reduce the loss rate (such as theft rate) to a certain extent.

[0009] In a possible implementation, the circuit frame includes a plurality of conductive sheets, the plurality of battery cells are electrically connected via the plurality of conductive sheets, and the inner surface of the cover plate is fixed to at least one of the plurality of conductive sheets.

[0010] Among them, the cover plate is fixed to at least one of the multiple conductive sheets, for example, the cover plate is fixed to the first conductive sheet, and the first conductive sheet is any one of the multiple conductive sheets, such as a conductive sheet connecting two battery cells, or a conductive sheet serving as a positive terminal, or a conductive sheet serving as a negative terminal.

[0011] In the solution shown in the present disclosure, the cover plate is forcibly removed from the box opening of the box body. Since the cover plate has a fixed relationship with the first conductive sheet, the first conductive sheet will be removed from the box opening of the box body together with the cover plate. Then, the electrical connection between the first conductive sheet and the battery cell will be disconnected, making it impossible for the battery to supply power to the outside through the circuit rack.

[0012] In a possible implementation, the battery further includes an anti-disassembly plate, and the anti-disassembly plate is located between the cover plate and the circuit rack;

[0013] The anti-disassembly plate and the cover plate have surfaces facing each other that are fixed by gluing or welding, and the anti-disassembly plate is fixed to the first conductive sheet.

[0014] In the solution shown in the present disclosure, since the contact area between the cover plate and the anti-disassembly plate is relatively large, the fixation between the cover plate and the anti-disassembly plate is more secure, and the anti-disassembly plate and the first conductive sheet can be fastened by screws, which further increases the difficulty of removing the cover plate from the box opening.

[0015] If the cover is forcibly removed from the box opening of the box body, the cover is in a fixed relationship with the anti-disassembly plate, and the anti-disassembly plate is in a fixed relationship with the first conductive sheet. Then, the first conductive sheet and the anti-disassembly plate will be removed from the box opening of the box body together with the cover, and the battery will be unable to supply power to the outside through the circuit rack.

[0016] In a possible implementation, the plurality of conductive sheets include a first conductive sheet, the first conductive sheet is a conductive sheet in a fixed relationship with the cover plate among the plurality of conductive sheets, and two ends of the first conductive sheet are respectively fixed to the tabs of the two battery cells;

[0017] The circuit rack further includes a locking member, which is located on a side of the first conductive sheet facing away from the cover plate, and the anti-disassembly plate and the locking member are fixed by screws.

[0018] The side of the first conductive sheet facing away from the cover plate can also be referred to as the lower side of the first conductive sheet facing away from the cover plate. Since the battery cell is also located below the first conductive sheet facing away from the cover plate, the locking member is located below the first conductive sheet facing away from the cover plate, that is, the locking member is located between the first conductive sheet and the battery cell connected to the first conductive sheet.

[0019] In the solution shown in the present disclosure, since the two ends of the first conductive sheet are respectively fixedly connected to the pole ears of the two battery cells, the locking piece is clamped between the first conductive sheet and the battery cell connected to the first conductive sheet, which can limit the locking piece from moving up and down in the vertical direction perpendicular to the cover plate, thereby achieving a fixed connection between the locking piece and the first conductive sheet in the vertical direction.

[0020] In this way, when the cover is forcibly removed from the box opening of the box body, the cover is subjected to an upward pulling force, and the anti-disassembly plate fixed to the cover is also subjected to an upward pulling force, and then the locking member fixed to the anti-disassembly plate is also subjected to an upward pulling force. Since the locking member is located below the first conductive sheet facing away from the cover, the first conductive sheet is also subjected to an upward pulling force, and under the action of the upward pulling force, the first conductive sheet will be disconnected from the connected battery cell, and once the first conductive sheet is no longer connected to the connected battery cell, the power supply line where the battery cell is located will be broken, and the battery will be unable to supply power to the outside through the line rack.

[0021] In a possible implementation, the locking member has a half-I-shaped slot, the slot includes a slot bottom and two slot walls opposite to each other, and the slot bottom is recessed relative to the slot walls;

[0022] The bottom of the slot is located between the first conductive sheet and the connected battery cell. Two opposite slot walls of the slot extend out of the first conductive sheet, and the tops of the slot walls are higher than the first conductive sheet.

[0023] In the solution disclosed in the present invention, the first conductive sheet is limited (i.e. stuck) between the two slot walls of the slot in the horizontal direction. In this way, the locking member is fixed to the pole ears of the two battery cells in the vertical direction through the two ends of the first conductive sheet, and the locking member is clamped between the first conductive sheet and the connected battery cell to achieve the limitation. In the horizontal plane, the first conductive sheet is stuck between the two slot walls of the slot to achieve the limitation. Thereby, the fixing relationship between the locking member and the first conductive sheet is made more firm. Then, when the locking member is subjected to an upward pulling force, it is easy to separate the first conductive sheet from the battery cell connected to the first conductive sheet, and the circuit rack is broken, thereby achieving the situation that the battery cannot supply power to the outside through the circuit rack.

[0024] In a possible implementation, the locking member is in the shape of a cross, T, L or straight sheet.

[0025] In the solution shown in the present disclosure, the locking member can be in the form of a sheet, and the planar shape of the sheet-shaped locking member can be cross-shaped. Of course, the planar shape of the locking member can also be rectangular, square, T-shaped, L-shaped or straight.

[0026] In a possible implementation, the locking member is in the shape of a cross, a T, or a straight sheet, and the locking member includes a first transverse sheet;

[0027] A portion of the first transverse piece is located on a side of a first conductive piece facing away from the cover plate, and another portion of the first transverse piece is located on a side of another first conductive piece facing away from the cover plate.

[0028] In the solution shown in the present disclosure, a single locking piece is fixed to the two first conductive sheets, so the anti-disassembly plate has a fixed relationship with the two first conductive sheets, which strengthens the fixed relationship between the anti-disassembly plate and the circuit rack. Therefore, when the cover plate is forcibly removed, the probability of the anti-disassembly plate tearing off the first conductive sheets is increased, thereby increasing the probability of a circuit breaker in the circuit rack.

[0029] In a possible implementation, the circuit rack includes a wiring bracket and a plurality of conductive sheets, and the wiring bracket is located in the box and covers the plurality of battery cells;

[0030] The wiring bracket has a via hole at a position corresponding to each battery cell tab, the plurality of conductive sheets are located on the wiring bracket, and the plurality of battery cells are electrically connected through the plurality of conductive sheets;

[0031] The inner surface of the cover plate is fixed to the wiring bracket and / or the first conductive sheet among the plurality of conductive sheets.

[0032] In the solution shown in the present disclosure, in the solution where the inner surface of the cover plate is fixed to the wiring bracket, when the cover plate is forcibly removed from the box opening of the box body, the wiring bracket will be removed from the box opening together with the cover plate, and multiple conductive sheets are arranged on the wiring bracket, so the entire wiring bracket will be removed from the box opening together with the cover plate. In this solution, because the wiring bracket and the battery cell have been disconnected from the electrical connection, the battery cannot supply power to the outside through the wiring bracket.

[0033] In the solution shown in the present disclosure, the cover plate is fixed to both the first conductive sheet and the wiring bracket, for example, there is an adhesive layer between the cover plate and the wiring bracket, and the adhesive layer realizes the bonding of the lower surface of the cover plate to the upper surface of the first conductive sheet, and the lower surface of the cover plate to the upper surface of the wiring bracket, which increases the difficulty of removing the cover plate from the box opening of the box body. Therefore, it is more difficult for the lost battery to supply power to the outside.

[0034] In one possible implementation, the first end face of the battery cell has a pole ear, the pole ear protrudes from the first end face, there is a spacing between the first conductive sheet and the connected battery cell, and the spacing is greater than or equal to the thickness of the locking piece, and the locking piece is located between the first conductive sheet and the connected battery cell.

[0035] In a possible implementation, the first end surface of the battery cell has a pole ear, and the pole ear is flush with the first end surface, or the pole ear of the battery cell protrudes from the first end surface, and there is a distance between the first conductive sheet and the connected battery cell, and the distance is smaller than the thickness of the locking member;

[0036] The first conductive sheet has a raised portion which is raised in a direction away from the connected battery cell, and the locking member is located between the raised portion of the first conductive sheet and the connected battery cell.

[0037] In a possible implementation, the circuit rack includes a sampling harness, the sampling harness is electrically connected to each of the plurality of battery cells, and the cover plate is fixed to the sampling harness.

[0038] In the scheme shown in the present disclosure, the sampling harness is used to collect the voltage and temperature of each battery cell to monitor the status of each battery cell. The cover plate can have a fixed relationship with the sampling harness. In this way, if the cover plate is forcibly removed from the box opening of the box body, since the cover plate and the sampling harness have a fixed relationship, the sampling harness will be removed from the box opening of the box body together with the cover plate, and the electrical connection between the sampling harness and the battery cell will be disconnected. The sampling harness cannot collect the voltage and temperature of the battery cell. Even if the battery can still supply power to the outside, it has a great safety hazard because it cannot monitor the real-time status of the battery cell. It can also reduce the use value of the lost battery to a certain extent, thereby reducing the battery loss rate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is an exploded schematic diagram of a battery provided by an exemplary embodiment of the present disclosure;

[0040] Figure 2 is a schematic diagram of a circuit rack including a plurality of conductive sheets provided by an exemplary embodiment of the present disclosure, which is located on top of a plurality of battery cells;

[0041] Figure 3 is a structural schematic diagram of a circuit rack including a wiring bracket and a plurality of conductive sheets provided by an exemplary embodiment of the present disclosure;

[0042] Figure 4 is a schematic diagram of a circuit rack including a wiring bracket and a plurality of conductive sheets provided by an exemplary embodiment of the present disclosure, which is located on top of a plurality of battery cells;

[0043] Figure 5 is a structural schematic diagram of a wiring bracket provided by an exemplary embodiment of the present disclosure;

[0044] Figure 6 is a schematic structural diagram of a locking member provided by an exemplary embodiment of the present disclosure;

[0045] Figure 7 yes Figure 3 Partial cross-sectional view at AA.

[0046] Description of Reference Numerals

[0047] 1. Box body; 2. Cover plate; 3. Circuit rack; 4. Battery cell; 5. Control panel; 6. Anti-disassembly plate.

[0048] 31. Wiring bracket; 32. Conductive sheet; 33. Locking member; 311. Through hole; 321. Positive conductive sheet; 322. Negative conductive sheet; 331. First horizontal sheet; 332. Second horizontal sheet; 333. Card slot; 32A. First conductive sheet. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0050] This embodiment involves a battery, which can also be called a battery pack, which is used to supply power to electrical devices. Batteries are generally deployed in scenarios where uninterrupted power supply is required for electronic devices. For example, batteries are deployed in a computer room to supply power to the devices in the computer room. The following describes the scenario of deploying batteries in a computer room.

[0051] The battery in the computer room is arranged in a rack. There is a wiring port on the battery control panel. Electrical equipment can be used by connecting it to the battery wiring port through a power cord.

[0052] Since the battery is easily taken out of the rack, the battery loss rate (eg, theft rate) is relatively high.

[0053] The current solution to deal with battery loss is usually to arrange a locking module, an alarm module and a positioning module on the control panel. The locking module is used to lock the wiring port on the control panel, the alarm module is used to sound an alarm when the battery is lost, and the positioning module is used to locate the battery when the battery is lost.

[0054] Although the battery control panel is arranged with the above-mentioned functional modules, the battery loss rate is still relatively high. This is because the alarm and location of the lost battery can be cancelled by removing the control panel, and the user can connect the wires inside the battery instead of at the wiring port of the battery control panel.

[0055] For example, the user removes the cover of the lost battery from the battery box to expose the circuit rack inside the battery. The circuit rack has wiring terminals, so that the user can directly connect the power cord to the wiring terminals of the circuit rack, so that the battery can be used again.

[0056] In view of the above situation, the present embodiment provides a battery. After the battery is lost (such as stolen), it is difficult for the user to remove the cover from the box. Even if the cover is forcibly removed from the box, the line in the circuit rack will be damaged, causing the line to be broken. Then, after the user connects the power cord to the terminal of the circuit rack, the battery will not be able to supply power to the electrical equipment, thereby increasing the difficulty of using the battery again. Therefore, the loss rate can be reduced to a certain extent.

[0057] The characteristics of this battery are described below.

[0058] like Figure 1 The figure shows the explosion diagram of the battery. Figure 1 As shown, the battery includes a box body 1, a cover plate 2, a circuit frame 3 and a plurality of battery cells 4.

[0059] Continue to refer Figure 1 As shown, the box body 1 is a box-shaped structure with an open top, including a bottom plate and four side plates. A plurality of battery cells 4 are placed in the box body 1 , and the positive and negative pole ears of the battery cells 4 face the box opening of the box body 1 .

[0060] In one example, the circuit rack 3 is located in the box 1 and arranged on the top of the multiple battery cells 4 . The top of the battery cell 4 is the portion of the battery cell 4 having the pole ear. The multiple battery cells 4 are electrically connected through the circuit rack 3 .

[0061] In one example, if Figure 2 As shown, the circuit frame 3 may be a circuit frame including a plurality of conductive sheets 32 , and then the plurality of battery cells 4 are electrically connected via the plurality of conductive sheets 32 to form a power supply circuit of the battery, and the battery supplies power to the outside via the power supply circuit.

[0062] The conductive sheet 32 ​​may be made of metal or alloy, such as metal aluminum or metal copper. As an example, the conductive sheet 32 ​​is made of aluminum or aluminum alloy, and the conductive sheet 32 ​​may also be called an aluminum bar.

[0063] Continue to refer Figure 2 As shown, the plurality of conductive sheets 32 may include a conductive sheet connecting two battery cells 4 (which may be referred to as a connecting conductive sheet), a positive conductive sheet 321 serving as a positive electrode terminal, and a negative conductive sheet 322 serving as a negative electrode terminal.

[0064] like Figure 2As shown, the portion of the connecting conductive sheet near the first end is fixedly connected to the pole ear (such as the positive pole ear) of one battery cell 4, and the portion of the connecting conductive sheet near the second end is fixedly connected to the pole ear (such as the negative pole ear) of another battery cell 4, wherein the fixing method between the connecting conductive sheet and the pole ear of the battery cell 4 can be laser welding or screw connection. Thus, multiple battery cells 4 are electrically connected through multiple connecting conductive sheets.

[0065] Continue to refer Figure 2 As shown, the portion of the positive conductive sheet 321 near the first end is connected to a battery cell 4 (such as a battery cell located at the beginning of the power supply line) by laser welding or screw connection, and the portion of the positive conductive sheet 321 near the second end serves as a positive terminal. The portion of the negative conductive sheet 322 near the first end is connected to another battery cell 4 (such as a battery cell located at the end of the power supply line) by laser welding or screw connection, and the portion of the negative conductive sheet 322 near the second end serves as a negative terminal.

[0066] In another example, Figure 3 As shown, the circuit frame 3 may also be a circuit frame including a wiring support 31 and a plurality of conductive sheets 32, wherein the plurality of conductive sheets 32 are arranged on the wiring support 31. Figure 4 As shown, the wiring bracket 31 covers a plurality of battery cells 4 , and the plurality of battery cells 4 are electrically connected via a plurality of conductive sheets 32 .

[0067] The wiring bracket 31 is made of insulating material, such as a plastic bracket.

[0068] In order to realize the electrical connection between the battery cell 4 and the conductive sheet 32, accordingly, Figure 5 As shown, the wiring bracket 31 has a through hole 311 , so that the conductive sheet 32 ​​located on the wiring bracket 31 can pass through the through hole 311 and be connected to the tab of the battery cell 4 .

[0069] In addition, refer to Figure 5 As shown, the wiring bracket 31 also has a slot for limiting the conductive sheet 32 ​​and a slot for arranging a sampling harness. The sampling harness is a harness used to collect the voltage and temperature of each battery cell 4 to monitor the usage status of each battery cell 4.

[0070] It should be pointed out that the present embodiment does not specifically limit the specific structure of the circuit rack 3 , and the circuit rack 3 may have a wiring bracket 31 or may not have a wiring bracket 31 .

[0071] Regardless of the specific structure of the circuit rack 3, the circuit rack 3 is used to electrically connect multiple battery cells 4 on the one hand to form a power supply circuit for the battery to supply power to the outside, and on the other hand to connect the load to the outside. For example, the circuit rack 3 has a wiring terminal, which is used to connect to the control panel of the battery. When the battery is in use, the power cord plug of the load is inserted into the power output port of the control panel to draw power.

[0072] So, continue to refer to Figure 1 As shown, the battery also includes a control panel 5, which is installed on a side panel of the box 1. The control panel 5 includes an internal interface and an external interface. The internal interface is used to connect to the wiring terminal of the circuit rack 3, and the external interface of the control panel 5 serves as the power output port of the battery and is used to be electrically connected to the load.

[0073] Therefore, when the battery is in normal use, the power cord plug of the load is inserted into the power output port of the control panel 5.

[0074] Because battery cell 4 needs to be sealed, please continue to refer to Figure 1 As shown, the battery further includes a cover plate 2 , which covers the box opening of the box body 1 and is sealed and fixed to the box body 1 , so that the battery cell 4 is sealed in the chassis formed by the box body 1 and the cover plate 2 .

[0075] Considering that after the cover plate 2 is removed from the box body 1, the circuit rack 3 will be exposed, so that the load can be directly connected to the terminal of the circuit rack 3, so that the lost battery can continue to be used. The cover plate 2 of the battery is not only fixed to the box body 1, but the inner surface of the cover plate 2 is also fixed to the circuit rack 3, wherein the fixing method of the inner surface of the cover plate 2 and the circuit rack 3 includes a non-detachable fixing method, such as welding or gluing.

[0076] Thus, even if the screws fixing the cover plate 2 and the box body 1 are unscrewed, the inner surface of the cover plate 2 is still fixed to the circuit rack 3 inside the box body 1, and the fixing relationship between the inner surface of the cover plate 2 and the circuit rack 2 cannot be released by using tools (such as screwdrivers), so it is difficult for the cover plate 2 to be removed from the box opening of the box body 1. If the cover plate 2 is difficult to be removed from the box opening of the box body, then the user cannot directly connect the load to the terminal of the circuit rack 3, which increases the difficulty of reusing the battery.

[0077] If the user forcibly removes the cover plate 2 from the box opening of the box body 1, because the cover plate 2 is still fixed to the circuit rack 3 inside the box body 1, two situations will occur. In the first situation, the cover plate 2 and the circuit rack 3 are separated from the box body 1, and in the second situation, the cover plate 2 breaks the circuit on the circuit rack 3 when it is separated from the box body. In the first situation, the circuit rack 3 is separated from the battery cell 4, so it is impossible to supply power to the outside, and in the second situation, the circuit rack 3 is broken and cannot supply power to the outside.

[0078] Therefore, even if the cover plate 2 is forcibly removed from the box opening of the box body 1, the circuit rack 3 will be separated from the battery cell or the circuit rack 3 will be broken, and power cannot be supplied to the outside, which further increases the difficulty of reusing the battery.

[0079] Once it becomes more difficult to reuse the battery, the battery theft rate can be reduced to a certain extent, thereby reducing the battery loss rate.

[0080] The characteristics of this battery are described in detail below.

[0081] As described above, the circuit frame 3 may be a circuit frame including a plurality of conductive sheets 32. In this solution, the inner surface of the cover plate 2 is fixed to the circuit frame 3, and the inner surface of the cover plate 2 may be fixedly connected to at least one conductive sheet 32 ​​among the plurality of conductive sheets 32. For ease of description, the at least one conductive sheet 32 ​​is recorded as a first conductive sheet 32A, and the first conductive sheet 32A is any conductive sheet among the plurality of conductive sheets 32. For example, the first conductive sheet 32A may be the connecting conductive sheet described above, and of course, may also be a positive conductive sheet or a negative conductive sheet.

[0082] As an example, the inner surface of the cover plate 2 can be directly fixed to the first conductive sheet 32A. For example, the lower surface (ie, the inner surface) of the cover plate 2 and the upper surface of the first conductive sheet 32A are fixed together by non-detachable means such as gluing or welding.

[0083] In this solution, if the cover plate 2 is forcibly removed from the box opening of the box body 1, since the cover plate 2 and the first conductive sheet 32A have a fixed relationship, the first conductive sheet 32A will be removed from the box opening of the box body 1 together with the cover plate 2. Then, the electrical connection between the first conductive sheet 32A and the battery cell 4 will be disconnected, making it impossible for the battery to supply power to the outside through the circuit rack 3.

[0084] As another example, Figure 1 As shown, the battery may further include an anti-disassembly plate 6, and the cover plate 2 is fixed to the first conductive sheet 32A through the anti-disassembly plate 6. For example, the anti-disassembly plate 6 is located between the cover plate 2 and the first conductive sheet 32A, and the lower surface (i.e., the inner surface) of the cover plate 2 and the upper surface of the anti-disassembly plate 6 are fixed together by gluing or welding, and the anti-disassembly plate 6 is fixed to the first conductive sheet 32A.

[0085] The anti-disassembly plate 6 is fixed to the first conductive sheet 32A, for example, the anti-disassembly plate 6 is directly fixed to the first conductive sheet 32A by gluing, welding or screws. For another example, the anti-disassembly plate 6 is indirectly fixed to the first conductive sheet 32A by a transition piece (such as the locking piece 33 mentioned below). The solution of fixing the anti-disassembly plate 6 to the first conductive sheet 32A by the locking piece 33 will be described in detail below.

[0086] In this solution, since the contact area between the cover plate 2 and the anti-disassembly plate 6 is relatively large, the fixation between the cover plate 2 and the anti-disassembly plate 6 is more secure, and the anti-disassembly plate 6 and the first conductive sheet 32A can be fastened by screws, which further increases the difficulty of removing the cover plate 2 from the box opening of the box body 1.

[0087] If the cover plate 2 is forcibly removed from the box opening of the box body 1, the cover plate 2 and the anti-disassembly plate 6 have a fixed relationship, and the anti-disassembly plate 6 and the first conductive sheet 32A have a fixed relationship. Then, the first conductive sheet 32A and the anti-disassembly plate 6 will be removed from the box opening of the box body 1 together with the cover plate 2, so that the battery cannot supply power to the outside through the circuit rack 3.

[0088] As described above, the circuit rack 3 may also be a circuit frame including a wiring bracket 31 and a plurality of conductive sheets 32. In this solution, the cover plate 2 is fixed to the circuit rack 3. The cover plate 2 may be fixed to the first conductive sheet 32A, or the cover plate 2 may be fixed to the wiring bracket 31, or the cover plate 2 may be fixed to both the first conductive sheet 32A and the wiring bracket 31.

[0089] The specific fixing method of the inner surface of the cover plate 2 and the first conductive sheet 32A can refer to the above description.

[0090] Among them, the specific fixing method of the inner surface of the cover plate 2 and the wiring bracket 31 can refer to the specific fixing method of the cover plate 2 and the first conductive sheet 32A, such as the inner surface of the cover plate 2 and the wiring bracket 31 are directly fixed together by gluing or welding, or the cover plate 2 can be fixed together with the wiring bracket 31 through the anti-disassembly plate 6.

[0091] In the solution where the cover plate 2 is fixed to the wiring bracket 31, when the cover plate 2 is forcibly removed from the box opening of the box body 1, the wiring bracket 31 will be removed from the box opening together with the cover plate 2, and the plurality of conductive sheets 32 are arranged on the wiring bracket 31, so the entire wiring rack 3 will be removed from the box opening together with the cover plate 2. In this solution, because the wiring rack 3 and the battery cell 4 are no longer electrically connected, the battery cannot supply power to the outside through the wiring rack 3.

[0092] In the solution where the cover plate 2 is fixed to the wiring bracket 31 through the anti-disassembly plate 6, the lower surface of the cover plate 2 is glued or welded to the upper surface of the anti-disassembly plate 6, and the contact area between the cover plate 2 and the anti-disassembly plate 6 is relatively large, which enhances the fixing relationship between the cover plate 2 and the anti-disassembly plate 6. The anti-disassembly plate 6 and the wiring bracket 31 can be fixed together by screws. In this solution, it is possible to increase the difficulty of removing the cover plate 2 from the box opening of the box body 1.

[0093] In the solution where the cover plate 2 is fixed to both the first conductive sheet 32A and the wiring bracket 31, for example, there is a glue layer between the cover plate 2 and the wiring bracket 3, and the glue layer realizes the bonding of the lower surface of the cover plate 2 to the upper surface of the first conductive sheet 32A, and the bonding of the lower surface of the cover plate 2 to the upper surface of the wiring bracket 31, which increases the difficulty of removing the cover plate 2 from the box opening of the box body 1. The glue layer can be formed by filling glue between the cover plate 2 and the wiring bracket 3 through a pouring technology.

[0094] As described above, the circuit rack 3 also includes sampling harnesses, which are electrically connected to each of the multiple battery cells 4 to collect the voltage and temperature of each battery cell 4 to ensure that the battery is in a safe use state. Then, the inner surface of the cover plate 2 is fixed to the circuit rack 3, or the inner surface of the cover plate 2 is fixed to the sampling harness.

[0095] Among them, the specific fixing method of the cover plate 2 and the sampling harness can refer to the specific fixing method of the cover plate 2 and the first conductive sheet 32A, such as the cover plate 2 and the sampling harness are directly fixed together by gluing or welding, or the cover plate 2 can be fixed together with the sampling harness through the anti-disassembly plate 6.

[0096] In the solution where the cover 2 and the sampling harness are fixed, when the cover 2 is forcibly removed from the box opening of the box body 1, since the cover 2 and the sampling harness have a fixed relationship, the sampling harness will be removed from the box opening of the box body 1 together with the cover 2, and the electrical connection between the sampling harness and the battery cell 4 will be disconnected. The sampling harness cannot collect the voltage and temperature of the battery cell 4. Even if the battery can still supply power to the outside, it has a great safety hazard because it cannot monitor the real-time status of the battery cell 4. This can also reduce the use value of the lost battery to a certain extent, thereby reducing the battery loss rate to a certain extent.

[0097] Based on the above, the fixing relationship between the inner surface of the cover plate 2 and the circuit rack 3 includes the following situations: the fixing relationship is that the inner surface of the cover plate 2 is fixed to the conductive sheet 32 ​​of the circuit rack 3; the fixing relationship is that the inner surface of the cover plate 2 is fixed to the wiring bracket 31; the fixing relationship is that the inner surface of the cover plate 2 is fixed to the sampling harness; the fixing relationship includes that the inner surface of the cover plate 2 is fixed to the conductive sheet 32, and the inner surface of the cover plate 2 is fixed to the wiring bracket 31; the fixing relationship includes that the inner surface of the cover plate 2 is fixed to the conductive sheet 32, and the inner surface of the cover plate 2 is fixed to the sampling harness; the fixing relationship includes that the inner surface of the cover plate 2 is fixed to the wiring bracket 31, and the inner surface of the cover plate 2 is fixed to the sampling harness; the fixing relationship includes that the inner surface of the cover plate 2 is fixed to the conductive sheet 32, the inner surface of the cover plate 2 is fixed to the wiring bracket 31, and the inner surface of the cover plate 2 is fixed to the sampling harness.

[0098] The above is a solution in which the inner surface of the cover plate 2 is directly fixed to the circuit rack 3, or the inner surface of the cover plate 2 is indirectly fixed to the circuit rack 3 via the anti-disassembly plate 6.

[0099] The following will introduce an exemplary solution of fixing the anti-disassembly plate 6 to the first conductive sheet 32A and / or the wiring bracket 31 in a solution in which the inner surface of the cover plate 2 is fixed to the first conductive sheet 32A and / or the wiring bracket 31 through the anti-disassembly plate 6.

[0100] (1) The anti-tamper plate 6 and the first conductive sheet 32A and / or the wiring bracket 31 are directly fixed by gluing, welding or screws.

[0101] In one example, the lower surface of the anti-tamper plate 6 and the upper surface of the first conductive sheet 32A are fixed by gluing or welding. In another example, screws pass through the anti-tamper plate 6 and are screwed on the first conductive sheet 32A to achieve fixation. Of course, the anti-tamper plate 6 and the first conductive sheet 32A can also be fixed by both gluing or welding and screwing to achieve double fixation.

[0102] In one example, the lower surface of the anti-tamper plate 6 and the upper surface of the wiring bracket 31 are fixed by gluing or welding. In another example, screws pass through the anti-tamper plate 6 and are screwed on the wiring bracket 31 to achieve fixation. Of course, the anti-tamper plate 6 and the wiring bracket 31 can also be fixed by both gluing or welding and screwing to achieve double fixation.

[0103] In the circuit rack 3 including the wiring bracket 31, a plurality of conductive sheets 32 are arranged on the wiring bracket 31, so the screws can also pass through the anti-disassembly plate 6 and the first conductive sheet 32A in sequence and be screwed on the wiring bracket 31 to fix the anti-disassembly plate 6, the first conductive sheet 32A and the wiring bracket 31 together.

[0104] (2) The anti-disassembly plate 6 and the first conductive sheet 32A are indirectly fixed via the locking member 33 .

[0105] like Figure 2 and Figure 3 As shown, the circuit rack 3 may include a locking member 33. The locking member 33 may be in a sheet shape. The planar shape of the sheet-shaped locking member 33 may be as follows: Figure 6 The cross shape shown, of course, the plane shape of the locking member 33 can also be rectangular, square, T-shaped, L-shaped or straight. Among them, this embodiment does not limit the specific shape of the locking member 33, such as it can also be block-shaped.

[0106] Continue to refer Figure 2 As shown, the locking member 33 is sandwiched between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A, and the locking member 33 is fixed to the anti-disassembly plate 6 by screws. Then, the anti-disassembly plate 6 and the first conductive sheet 32A are fixed together by the locking member 33 and the screws. If the circuit rack 3 also includes a wiring bracket 31, then Figure 3The locking member 33 shown may be sandwiched between the first conductive sheet 32A and the wiring bracket 31 .

[0107] Since the two ends of the first conductive sheet 32A are respectively fixedly connected to the pole ears of the two battery cells 4, the locking member 33 is clamped between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A, so as to limit the locking member 33 from moving up and down in the vertical direction perpendicular to the cover plate 2, thereby achieving a fixed connection between the locking member 33 and the first conductive sheet 32A in the vertical direction.

[0108] The locking member 33 is sandwiched between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A, and the locking member 33 is fixed to the anti-disassembly plate 6 by screws, which can be divided into the following situations.

[0109] In case 1, a portion of the locking member 33 is sandwiched between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A. Then, the screw can pass through the anti-disassembly plate 6 and be screwed onto the other portion of the locking member 33 .

[0110] In case 2, the entire locking member 33 is clamped between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A. Then, the screw can pass through the anti-disassembly plate 6 and the first conductive sheet 32A in sequence and be screwed onto the locking member 33.

[0111] In case three, the line rack 3 includes a wiring bracket 31, and a part of the locking member 33 is clamped between the first conductive sheet 32A and the wiring bracket 31. Then, the screw can pass through the anti-disassembly plate 6 and another part of the locking member 33 in sequence and be screwed on the wiring bracket 31.

[0112] In case four, the line rack 3 includes a wiring bracket 31, and the locking member 33 is completely clamped between the first conductive sheet 32A and the wiring bracket 31. Then, the screw can pass through the anti-disassembly plate 6, the first conductive sheet 32A and the locking member 33 in sequence and be screwed on the wiring bracket 31.

[0113] It should be pointed out that the first and second situations can also be applied to the line rack 3 including the wiring bracket 31 .

[0114] For example, as an example, the shape of the locking member 33 can be a cross-shaped, T-shaped or straight-shaped sheet, such as Figure 6 As shown, the locking member 33 includes a first transverse piece 331; Figure 2 As shown, a portion of the first transverse piece 331 is sandwiched between a first conductive piece 32A and the connected battery cell 4, another portion of the first transverse piece 331 is sandwiched between another first conductive piece 32A and the connected battery cell 4, and the remaining portion of the first transverse piece 331 is fixed to the anti-disassembly plate 6 by screws.

[0115] That is, reference Figure 2As shown, the first transverse piece 331 of the locking member 33 includes three parts, the first part is clamped between a first conductive piece 32A and the wiring bracket 31, the second part is clamped between another first conductive piece 32A and the wiring bracket 31, and the third part is used to be fixed to the anti-disassembly plate 6, wherein the third part can be located between the first part and the second part.

[0116] Among them, this embodiment does not specifically limit whether a single locking member 33 is located below one first conductive sheet 32A, below two first conductive sheets 32A, or below more first conductive sheets 32A. When the locking member 33 is subjected to an upward force, the locking member 33 can lift at least one conductive sheet 32 ​​to disconnect the lifted conductive sheet 32 ​​from the connected battery cell 4.

[0117] In one example, in order to enhance the limiting effect between the locking member 33 and the first conductive sheet 32A, the locking member 33 is located between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A, and is clamped with the first conductive sheet 32A.

[0118] For example, Figure 6 As shown, the locking member 33 may have a half-I-shaped slot 333, the slot 333 includes a slot bottom and two slot walls, the two slot walls are located opposite to each other, and the slot bottom is recessed relative to the slot walls. Figure 6 And refer to Figure 7 As shown, the bottom of the slot 333 is sandwiched between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A. The two opposite slot walls of the slot 333 both extend out of the first conductive sheet 32A, and the top of the slot wall is higher than the first conductive sheet 32A. In this way, the middle part of the first conductive sheet 32A is stuck between the two slot walls of the slot 333.

[0119] For example, Figure 6 The figure shows a schematic diagram of the structure of a locking member 5. The locking member 33 is cross-shaped and includes a first transverse piece 331 and a second transverse piece 332. The first transverse piece 331 and the second transverse piece 332 are perpendicular to each other. The slot 333 can be set on the first transverse piece 331.

[0120] like Figure 7 , which is a partial cross-sectional view of the circuit rack 3 including the wiring bracket 31, wherein the bottom of the slot 333 is sandwiched between the first conductive sheet 32A and the wiring bracket 31. Figure 7As shown, the middle part of the first conductive sheet 32A is limited (i.e. stuck) between the two groove walls of the slot 333 in the horizontal direction. In this way, the locking member 33 is fixed to the pole ears of the two cells in the vertical direction through the two ends of the first conductive sheet 32A, and the locking member 33 is clamped between the first conductive sheet 32A and the connected cell to achieve the limitation. In the horizontal plane, the first conductive sheet 32A is stuck between the two groove walls of the slot 333 to achieve the limitation. In this way, the fixing relationship between the locking member 3 and the first conductive sheet 32A is made more firm. Then, when the locking member 3 is subjected to an upward pulling force, it is easy to separate the first conductive sheet 32A from the cell 4 connected to the first conductive sheet 32A, and the circuit frame 3 is disconnected.

[0121] In one example, the number of locking members 3 may be one, and in the case of one locking member 3, the only locking member 3 may be arranged at or near the center of the battery. The number of locking members 3 may also be multiple, and multiple locking members 3 may be arranged at key positions of the battery, such as being arranged in sequence along the center line of the battery, or evenly distributed at multiple positions of the battery. In particular, this embodiment does not limit the number of locking members 3.

[0122] Regardless of whether the number of the locking members 33 is one or more, the locking member 33 and the anti-tampering plate 6 can be fixed by one or more screws.

[0123] In one example, in the solution where the line rack 3 includes the wiring bracket 31, the locking member 33 and the wiring bracket 31 can be integrated together, that is, the locking member 33 can be a protruding structure on the upper surface of the wiring bracket 31. Of course, the locking member 33 and the wiring bracket 31 can also be independent components.

[0124] In the above-mentioned solution, the tabs of the battery cell 4 may be flush with the end surface where they are located, or the tabs of the battery cell 4 may protrude from the end surface where they are located.

[0125] For example, the first end surface of the battery cell 4 (such as the top surface of the battery cell 4) has a tab, and the tab is flush with the first end surface. Figure 2 As shown, the first conductive sheet 32A may have a raised portion that is raised in a direction away from the connected battery cell 4, and the locking member 33 may be clamped between the raised portion of the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A. In order to simplify the processing of the conductive sheet 32, Figure 2 The conductive sheets 32 in the figure are all processed into a structure with an arched portion in the middle portion. In fact, the conductive sheet 32 ​​without a locking sheet 33 below may not have the arched portion.

[0126] For another example, the pole ear of the battery cell 4 protrudes from the first end face of the battery cell 4, so that the first conductive sheet 32A is spaced apart from the first end face of the connected battery cell 4, and there is a distance between the first conductive sheet 32A and the first end face of the connected battery cell 4, but the distance between the first conductive sheet 32A and the connected battery cell 4 is still relatively small, which is smaller than the thickness of the locking member 33. Then, the first conductive sheet 32A can also adopt the above-mentioned arched scheme so that the locking member 33 can be clamped between the arched part of the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A.

[0127] For another example, the pole ear of the battery cell 4 protrudes from the first end face of the battery cell 4, so that the first conductive sheet 32A is spaced apart from the first end face of the connected battery cell 4, and there is a distance between the first conductive sheet 32A and the first end face of the connected battery cell 4, and the distance between the first conductive sheet 32A and the connected battery cell 4 is relatively large, such as greater than or equal to the thickness of the locking piece 33. Then, the first conductive sheet 32A may not have an arched structure, but a flat sheet, and the locking piece 33 can be clamped between the first conductive sheet 32A and the battery cell 4 connected to the first conductive sheet 32A.

[0128] For the solution in which the circuit rack 3 includes a wiring bracket 31, the locking piece 33 can be clamped between the first conductive sheet 32A and the wiring bracket 31. Then, based on the relationship between the spacing between the first conductive sheet 32A and the wiring bracket 31 and the thickness of the locking piece 33, it can be determined whether the first conductive sheet 32A should have a raised portion. If the spacing is greater than or equal to the thickness, the first conductive sheet 32A does not need to have a raised portion, and if the spacing is less than the thickness, the first conductive sheet 32A can have a raised portion.

[0129] It should be pointed out that the above is a fixed relationship between the locking member 33 and the anti-disassembly plate 6, and the anti-disassembly plate 6 is bonded or welded to the cover plate 2 so that the inner surface of the cover plate 2 and the circuit frame 3 have a fixed relationship. As mentioned above, the battery may not include the anti-disassembly plate 6, and in the solution without the anti-disassembly plate 6, the locking member 33 may also be directly bonded or welded to the inner surface of the cover plate 2 to achieve a fixed relationship between the inner surface of the cover plate 2 and the circuit frame 3.

[0130] In this embodiment, the cover plate of the battery is not only fixed to the box body, but also has a fixed relationship with the circuit rack in the box body. In this way, after the battery is lost (such as stolen), after the user removes the screws connecting the cover plate and the box body, because the cover plate is still fixed to the circuit rack, it is difficult to remove the cover plate from the box opening of the box body, and the load cannot be connected to the wiring terminal of the circuit rack, and the battery cannot be used again. If the user forcibly removes the cover plate from the box opening of the box body, because the cover plate and the circuit rack have a fixed relationship, the circuit rack will be removed from the box opening together with the cover plate, or the circuit in the circuit rack will be damaged. In either case, the battery can no longer supply power to the outside through the circuit rack. It can be seen that the scheme shown in the present disclosure increases the difficulty of reusing the lost battery, and its utilization value is also reduced accordingly, which can reduce the loss rate (such as theft rate) to a certain extent.

Claims

1. A battery, characterized in that: The battery comprises a box body (1), a cover plate (2), a circuit frame (3) and a plurality of battery cells (4); The plurality of battery cells (4) and the circuit frame (3) are both located in the box (1), and the plurality of battery cells (4) are electrically connected via the circuit frame (3); The cover plate (2) covers the box opening of the box body (1) and is fixed to the box body (1), and the inner surface of the cover plate (2) is also fixed to the circuit rack (3).

2. The battery according to claim 1, characterized in that The circuit frame (3) comprises a plurality of conductive sheets (32), the plurality of battery cells (4) are electrically connected via the plurality of conductive sheets (32), and the inner surface of the cover plate (2) is fixed to at least one conductive sheet (32) among the plurality of conductive sheets (32).

3. The battery according to claim 2, characterized in that The battery further comprises an anti-disassembly plate (6), wherein the anti-disassembly plate (6) is located between the cover plate (2) and the circuit frame (3); The inner surface of the cover plate (2) and the upper surface of the anti-disassembly plate (6) facing the cover plate (2) are fixed by gluing or welding, and the anti-disassembly plate (6) is fixed to at least one conductive sheet (32) among the plurality of conductive sheets (32).

4. The battery according to claim 3, characterized in that The plurality of conductive sheets (32) include a first conductive sheet (32A), the first conductive sheet (32A) being a conductive sheet (32) in a fixed relationship with the cover plate (2) among the plurality of conductive sheets (32), and two ends of the first conductive sheet (32A) being respectively fixed to the tabs of two battery cells (4); The circuit rack (3) further comprises a locking member (33), wherein the locking member (33) is located on a side of the first conductive sheet (32A) facing away from the cover plate (2), and the anti-disassembly plate (6) and the locking member (33) are fixed.

5. The battery according to claim 4, characterized in that The locking member (33) has a slot (333), the slot (333) comprising a slot bottom and two slot walls located opposite to each other, the slot bottom being recessed relative to the slot wall; The groove bottom is located on the side of the first conductive sheet (32A) facing away from the cover plate (2), and the groove wall extends out of the first conductive sheet (32A), and the top of the groove wall is higher than the first conductive sheet (32A).

6. The battery according to claim 4 or 5, characterized in that: The locking member (33) is in the shape of a cross, T, L or straight sheet.

7. The battery according to any one of claims 4 to 6, characterized in that: The locking member (33) is in the shape of a cross, a T-shaped or a straight sheet, and the locking member (33) comprises a first transverse sheet (331); A portion of the first transverse piece (331) is located on a side of a first conductive piece (32A) facing away from the cover plate (2), and another portion of the first transverse piece (331) is located on a side of another first conductive piece (32A) facing away from the cover plate (2).

8. The battery according to any one of claims 1 to 7, characterized in that: The circuit rack (3) comprises a wiring bracket (31) and a plurality of conductive sheets (32); the wiring bracket (31) is located in the box (1) and covers the plurality of battery cells (4); The wiring bracket (31) has a via (311) at a position corresponding to the pole ear of each battery cell (4), the plurality of conductive sheets (32) are located on the wiring bracket (31), and the plurality of battery cells (4) are electrically connected via the plurality of conductive sheets (32); The inner surface of the cover plate (2) is fixed to the wiring bracket (31) and / or at least one conductive sheet (32) among the plurality of conductive sheets (32).

9. The battery according to any one of claims 4 to 7, characterized in that: The first end face of the battery cell (4) has a pole ear, and the pole ear protrudes from the first end face. The first conductive sheet (32A) and the connected battery cell (4) are arranged at an interval, and the interval is greater than or equal to the thickness of the locking member (33). The locking member (33) is located on the side of the first conductive sheet (32A) that is away from the cover plate (2).

10. The battery according to any one of claims 4 to 7, characterized in that: The first end face of the battery cell (4) has a pole ear, the pole ear is flush with the first end face, or the pole ear protrudes from the first end face, the first conductive sheet (32A) and the connected battery cell (4) are arranged at a distance, and the distance is smaller than the thickness of the locking member (33); The first conductive sheet (32A) has a raised portion that is raised in a direction away from the connected battery cell (4), and the locking member (33) is located on a side of the raised portion of the first conductive sheet (32A) that is away from the cover plate (2).

11. The battery according to any one of claims 1 to 10, characterized in that: The circuit rack (3) comprises a sampling wire harness, the sampling wire harness is electrically connected to each of the plurality of battery cells (4), and the inner surface of the cover plate (2) is fixed to the sampling wire harness.

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