Energy storage converter grounding connection device and energy storage converter

Abstract

The utility model discloses an energy storage converter grounding connection device, comprising a conductor and an insulator, the outer side of the conductor is provided with the insulator, one end of the conductor is installed at the inner side of a housing, the outer side of the conductor is provided with the insulator, the other end of the conductor is connected with a grounding terminal of a circuit board, and the circuit board is arranged in the housing; the utility model provides a grounding connection device for an energy storage converter, which comprises an electric conductor and an insulator, one end of the electric conductor is connected and fixed on a grounding terminal on a circuit board, and the other end of the electric conductor is connected and fixed on a shell of the energy storage converter; by using the energy storage converter grounding connection device provided by the utility model, the test workload before leaving a factory is reduced, and meanwhile, the circuit board in the energy storage converter is prevented from being disassembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic devices, and in particular relates to a grounding connection device for an energy storage converter and an energy storage converter. Background Art

[0002] The power storage converter (PCS) can control the charging and discharging process of the battery, perform AC / DC conversion, and directly supply power to the AC load when there is no power grid. The PCS consists of a DC / AC bidirectional converter, a control unit, etc. The PCS controller receives background control instructions through communication, and controls the converter to charge or discharge the battery according to the sign and size of the power instruction, thereby adjusting the active power and reactive power of the power grid. The PCS controller communicates with the BMS through the CAN interface to obtain battery pack status information, and can realize protective charging and discharging of the battery to ensure safe battery operation.

[0003] The factory test items of energy storage inverters usually include the following items: static characteristics test, dynamic performance test, steady-state and transient response test, motor starting test, fault protection test, synchronous operation test, over-temperature test, whole machine anti-interference ability test, AC output stability test and control function test, etc. These test items can comprehensively evaluate the performance, reliability and stability of the energy storage bidirectional inverter to ensure that it meets the design requirements and technical specifications and meets the user's usage needs.

[0004] However, the current factory testing requires ensuring that the converter is grounded and requires disassembling the circuit board in the energy storage converter, which undoubtedly increases the workload of pre-factory testing. Utility Model Content

[0005] The utility model aims to overcome the problem that the existing energy storage converter needs to dismantle the circuit board for factory testing to ensure grounding, which is a heavy workload, and provides an energy storage converter grounding connection device and an energy storage converter.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A grounding connection device for an energy storage converter comprises a conductor and an insulator, wherein the insulator is arranged outside the conductor, one end of the conductor is installed on the inner side of a shell, the insulator is arranged outside the conductor, the other end of the conductor is connected to a grounding terminal of a circuit board, and the circuit board is arranged inside the shell.

[0008] Furthermore, it also includes a fixing piece, the conductor is provided with a grounding hole, and one end of the fixing piece is fixed on the grounding terminal of the circuit board through the grounding hole.

[0009] Furthermore, the fixing member adopts a pan head screw.

[0010] Furthermore, it also includes a first locking piece, an insulating locking hole is arranged on the insulator, a first locking hole is arranged on the shell, and the first locking piece locks the insulating locking hole and the first locking hole.

[0011] Furthermore, it also includes a second locking piece, a conductive locking hole is set on the conductor, and a second locking hole is set on the shell. The second locking piece can detachably lock the conductive locking hole and the second locking hole.

[0012] Furthermore, the first locking member adopts a first countersunk screw, and the second locking member adopts a second countersunk screw, and the length of the first countersunk screw is shorter than that of the second countersunk screw.

[0013] Furthermore, a partition is arranged inside the shell, and the partition is arranged parallel to the bottom of the shell. The circuit board includes a first circuit board and a second circuit board. The first circuit board is installed on the bottom of the shell, and the second circuit board is installed on the partition.

[0014] Furthermore, the shell is a metal shell.

[0015] Furthermore, two insulators are provided, and the two insulators are symmetrically arranged on both sides of the conductor, and the conductor and the insulator are an injection-molded integral structure.

[0016] An energy storage converter is equipped with the above-mentioned energy storage converter grounding connection device.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model provides a grounding connection device for an energy storage converter, comprising a conductor and an insulator, wherein one end of the conductor is connected and fixed to a grounding terminal on a circuit board, and the other end is connected and fixed to a housing of the energy storage converter. The use of the grounding connection device for an energy storage converter provided by the utility model reduces the workload of pre-shipment testing and avoids disassembly of the circuit board in the energy storage converter.

[0019] Furthermore, during the factory test of the energy storage converter, the test requirement that the circuit board is not connected to the housing can be met simply by removing the first locking member.

[0020] Furthermore, when the energy storage converter is tested at the factory, only the screws connecting the ground connection device and the metal casing of the energy storage converter need to be removed to meet the pre-factory test electrical disconnection requirement; after the pre-factory test is completed, only the screws need to be tightened.

[0021] Furthermore, the surrounding side of the conductor is coated with an insulating material, and the insulating material is fixed to the metal shell to ensure that the conductor is not conductive to the shell during testing.

[0022] Furthermore, the insulator is fixed to the shell, ensuring that the fixing points of the conductor and the shell are aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 The utility model is a schematic structural diagram of a grounding connection device for an energy storage converter.

[0025] Figure 2 The utility model is an application schematic diagram of a grounding connection device for an energy storage converter.

[0026] Among them, 1 is a conductor, 2 is an insulator, 3 is a circuit board, 3-1 is a grounding terminal, 4 is a fixing member, 5 is a first locking member, 6 is a second locking member, 7 is a shell, and 8 is a partition. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Embodiment 1

[0030] A grounding connection device for an energy storage converter includes a conductor 1 and an insulator 2, wherein one end of the conductor 1 is mounted on the inner side of a shell 7, the insulator 2 is arranged on the outer side of the conductor 1, the other end of the conductor 1 is connected to a grounding terminal 3-1 of a circuit board 3, and the circuit board 3 is arranged inside the shell 7.

[0031] Preferably, a fixing member 4 is further included, the conductor 1 is provided with a grounding hole, and one end of the fixing member 4 is fixed on the grounding terminal 3 - 1 of the circuit board 3 through the grounding hole.

[0032] Preferably, the fixing member 4 is a pan head screw.

[0033] Preferably, it further includes a first locking piece 5, an insulating locking hole is provided on the insulator 2, a first locking hole is provided on the shell 7, and the first locking piece 5 locks the insulating locking hole and the first locking hole.

[0034] Preferably, it further includes a second locking piece 6, a conductive locking hole is provided on the conductor 1, a second locking hole is provided on the housing 7, and the second locking piece 6 can detachably lock the conductive locking hole and the second locking hole.

[0035] Preferably, the first locking member 5 is a first countersunk screw, and the second locking member 6 is a second countersunk screw, and the length of the first countersunk screw is shorter than that of the second countersunk screw.

[0036] Preferably, a partition 8 is arranged inside the shell 7 , and the partition 8 is arranged parallel to the bottom of the shell 7 . The circuit board 3 includes a first circuit board and a second circuit board. The first circuit board is installed on the bottom of the shell 7 , and the second circuit board is installed on the partition 8 .

[0037] Preferably, the housing 7 is a metal housing.

[0038] Preferably, two insulators 2 are provided, and the two insulators 2 are symmetrically arranged on both sides of the conductor 2, and the conductor 1 and the insulator 2 are an injection-molded integral structure.

[0039] Embodiment 2

[0040] A method for grounding an energy storage converter, using an energy storage converter grounding connection device in Embodiment 1, comprises the following steps:

[0041] When the energy storage converter is tested before leaving the factory, the second locking member 6 is removed so that the ground terminal 3 - 1 of the circuit board 3 and the conductor 1 are not connected to the housing 7 .

[0042] After the factory test is completed, the second locking member 6 can be reassembled.

[0043] Embodiment 3

[0044] An energy storage converter is equipped with an energy storage converter grounding connection device described in the first embodiment.

[0045] Embodiment 4

[0046] like Figure 1 As shown, a grounding connection device for an energy storage converter uses an injection molding process to make a conductor 1 and an insulator 2 into a whole.

[0047] like Figure 2 As shown, the two circuit boards 3 are respectively fixed on the shell 7 and the middle partition 8; the conductor 1 of the grounding connection device is fixed to the grounding terminal 3-1 of the circuit board 3 by a pan head screw; the short countersunk screw locks the insulator 2 with the metal shell 7; the long countersunk screw locks the conductor 1 with the metal shell 7.

[0048] Embodiment 5

[0049] A method for grounding an energy storage converter, using an energy storage converter grounding connection device in Embodiment 4, comprises the following steps:

[0050] When the energy storage converter is tested before leaving the factory, the long countersunk screw is removed so that the ground terminal 3 - 1 of the circuit board 3 is not connected to the conductor 1 through the metal housing 7 .

[0051] After completing the factory test, simply reinstall the long countersunk screws.

[0052] 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 its protection scope. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the utility model, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the utility model, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the utility model.

Claims

1. A grounding connection device for an energy storage converter, characterized in that: The invention comprises a conductor (1) and an insulator (2), wherein one end of the conductor (1) is mounted on the inner side of a housing (7), the insulator (2) is arranged on the outer side of the conductor (1), the other end of the conductor (1) is connected to a ground terminal (3-1) of a circuit board (3), and the circuit board (3) is arranged inside the housing (7).

2. The energy storage converter grounding connection device according to claim 1, characterized in that: It also includes a fixing member (4), the conductor (1) is provided with a grounding hole, and one end of the fixing member (4) is fixed to a grounding terminal (3-1) of the circuit board (3) through the grounding hole.

3. The energy storage converter grounding connection device according to claim 2, characterized in that: The fixing member (4) adopts a pan head screw.

4. The energy storage converter grounding connection device according to claim 1, characterized in that: It also includes a first locking piece (5), an insulating locking hole is provided on the insulator (2), the shell (7) is provided with a first locking hole, and the first locking piece (5) locks the insulating locking hole and the first locking hole.

5. The energy storage converter grounding connection device according to claim 4, characterized in that: It also includes a second locking piece (6), a conductive locking hole is provided on the conductor (1), a second locking hole is provided on the housing (7), and the second locking piece (6) can detachably lock the conductive locking hole and the second locking hole.

6. The energy storage converter grounding connection device according to claim 5, characterized in that: The first locking member (5) adopts a first countersunk screw, and the second locking member (6) adopts a second countersunk screw. The length of the first countersunk screw is shorter than that of the second countersunk screw.

7. The energy storage converter grounding connection device according to claim 1, characterized in that: A partition (8) is arranged inside the shell (7), and the partition (8) is arranged parallel to the bottom of the shell (7). The circuit board (3) comprises a first circuit board and a second circuit board, and the first circuit board is installed on the bottom of the shell (7), and the second circuit board is installed on the partition (8).

8. The energy storage converter grounding connection device according to claim 1, characterized in that: The housing (7) is a metal housing.

9. The energy storage converter grounding connection device according to claim 1, characterized in that: Two insulators (2) are provided, and the two insulators (2) are symmetrically arranged on both sides of the conductor (1), and the conductor (1) and the insulator (2) are an injection-molded integral structure.

10. An energy storage converter, characterized in that: Assemble an energy storage converter grounding connection device as described in any one of claims 1 to 9.

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