Hipot test simulation cell and test device
By designing Hipot test simulation battery cells, using a parallel structure of analog resistors and capacitors, the problem of frequently selecting standard parts in battery cells is solved, and efficient and low-cost battery cells are achieved, ensuring testing accuracy and production continuity.
Patent Information
- Application Number
- CN202422418337.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, battery cell Hipot test requires frequent selection of capacitor and resistor standard parts, resulting in slow production progress and high cost, and the parameters of standard parts are prone to change and affect the test accuracy.
A Hipot test analog battery cell is designed, using analog resistors and analog capacitors in parallel. The resistors and capacitors are equal to the standard parts of the battery cell, accommodated in the shell, and connected to external equipment through conductive parts to achieve electrical connection, with a simple structure and easy parameter calibration.
It reduces testing costs, improves testing efficiency, ensures testing accuracy, and does not affect production progress. The simulation battery cell performance is stable and can be used for a long time.
Smart Images
Figure CN223284326U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production, in particular to a Hipot test simulation battery cell and a test device. Background Art
[0002] In the life cycle of a battery cell, the High Potential Test (Hipot), also known as the dielectric withstand voltage test, plays a vital role. It is like a guardian in the battery production process, verifying the insulation performance, especially under high voltage conditions, to ensure that current does not accidentally leak from one part of the battery cell to another. The core goal of the Hipot withstand voltage test is to detect the integrity of the insulation system. It not only checks the insulation performance of the battery cell under normal operating voltage, but also reveals potential problems such as damage to the insulation layer, contaminants around the conductor, irregular spacing, and even process errors during the manufacturing process.
[0003] During the Hipot test of battery cells, it is necessary to select the core with parameters such as capacitance and resistance closest to the standard values from the numerous battery cells on the production line, and use them as standard parts for Hipot testing and verification. During the test, the capacitance and resistance of the core will change due to the influence of time, storage environment, etc., and it cannot be reused as a standard part for a long time. It takes a long time to select the core again, which will also affect the production progress of the production line.
[0004] Therefore, there is an urgent need to provide a new type of Hipot test simulation battery cell and test device to solve the above technical problems in the prior art. Utility Model Content
[0005] The purpose of the utility model is to provide a Hipot test simulation battery cell, which has a simple structure, is easy to process and is convenient for parameter calibration, has a low manufacturing cost, and has stable performance and parameters. It can be used for a long time and perform Hipot testing, thereby reducing the testing cost.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] The Hipot test simulation battery cell includes a shell, a conductive part, a simulated resistor and a simulated capacitor. The shell has a accommodating cavity. The simulated resistor and the simulated capacitor are arranged in parallel and accommodated in the accommodating cavity. One end of the conductive part is connected to the simulated resistor and the simulated capacitor, and the other end is used to be electrically connected to an external device; the resistance of the simulated resistor is equal to the resistance of the battery cell standard part, and the capacitance of the simulated capacitor is equal to the capacitance of the battery cell standard part.
[0008] Optionally, the conductive part includes a conductive wire and two power connection blocks, and the two power connection blocks are respectively arranged at the two axial ends of the shell. One end of the conductive wire connects the analog resistor and the analog capacitor in parallel, and the other end extends axially along the shell and extends out of the two axial ends of the shell. The conductive wire is electrically connected to the power connection blocks.
[0009] Optionally, the conductive member further includes an elastic adapter, one end of which is electrically connected to the conductive wire and abuts against the outer wall of the shell, and the other end of which is electrically connected to the power connection block.
[0010] Optionally, both axial ends of the shell are provided with mounting grooves, at least part of the conductive wires are provided in the mounting grooves, and the elastic adapter is in contact with the bottom wall of the mounting grooves.
[0011] Optionally, the elastic adapter and the bottom wall of the slot, as well as the power connection block and the shell are detachably connected via connecting pieces.
[0012] Optionally, the elastic adapter includes a conductive spring or a conductive spring.
[0013] Optionally, a connection hole is provided on a side wall of one end of the power connection block close to the shell, and the conductive wire is plugged and fixed in the connection hole.
[0014] Optionally, the shell includes a bottom shell and a cover body, the accommodating cavity is formed between the bottom shell and the cover body, and the cover body is detachably connected to the bottom shell.
[0015] Optionally, the cover and the bottom shell are fixed via a connecting piece.
[0016] The purpose of the utility model is to provide a Hipot test device, which includes a Hipot test simulation cell as described in any of the above solutions.
[0017] Beneficial effects:
[0018] The Hipot test simulation cell in this embodiment uses a simulated resistor and a simulated capacitor in parallel to simulate an actual cell standard part. The resistance of the simulated resistor is equal to the resistance of the cell standard part, and the capacitance of the simulated capacitor is equal to the capacitance of the cell standard part. At the same time, the simulated resistor and the simulated capacitor are placed in the accommodating cavity of the shell after being connected in parallel, and a conductive member is used to lead the internal simulated resistor and the simulated capacitor to be connected to the outside world, so as to realize the electrical connection between the Hipot test simulation cell and the external device, thereby performing a Hipot test. The Hipot test simulation cell has a simple structure and is easy to process, with low manufacturing cost. It is also easy to calibrate parameters so that it has the same parameters as the cell standard part, and has stable performance and parameters. It can be used for a long time and perform Hipot testing. There is no need to stop production to select cell standard parts, which reduces the test cost without affecting the production progress of the cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is an axonometric diagram of a Hipot test simulation cell provided by a specific embodiment of the present utility model;
[0020] Figure 2 This is a diagram of a Hipot test simulation cell explosion provided by a specific embodiment of the present invention.
[0021] In the picture:
[0022] 100, housing; 101, connector; 102, accommodating cavity; 110, bottom shell; 111, mounting groove; 112, groove bottom wall; 120, cover;
[0023] 200, conductive member; 210, conductive wire; 220, power connection block; 221, connection hole; 230, elastic adapter;
[0024] 310, simulated resistance; 320, simulated capacitance. DETAILED DESCRIPTION
[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.
[0026] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0028] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0029] Please refer to Figure 1 and Figure 2 In this embodiment, the Hipot test simulated battery cell includes a shell 100, a conductive part 200, a simulated resistor 310 and a simulated capacitor 320. The shell 100 has a accommodating cavity 102. The simulated resistor 310 and the simulated capacitor 320 are arranged in parallel and accommodated in the accommodating cavity 102. One end of the conductive part 200 is connected to the simulated resistor 310 and the simulated capacitor 320, and the other end is used to be electrically connected to an external device; the resistance of the simulated resistor 310 is equal to the resistance of the battery cell standard part, and the capacitance of the simulated capacitor 320 is equal to the capacitance of the battery cell standard part.
[0030] The Hipot test simulation cell in this embodiment uses a simulated resistor 310 and a simulated capacitor 320 in parallel to simulate an actual cell standard part. The resistance of the simulated resistor 310 is equal to the resistance of the cell standard part, and the capacitance of the simulated capacitor 320 is equal to the capacitance of the cell standard part. At the same time, the simulated resistor 310 and the simulated capacitor 320 are placed in parallel in the accommodating cavity 102 of the housing 100, and the conductive member 200 is used to lead the internal simulated resistor 310 and the simulated capacitor 320 to the outside world for connection, so as to realize the electrical connection between the Hipot test simulation cell and the external device, thereby performing the Hipot test. The Hipot test simulation cell has a simple structure and is easy to process, with low manufacturing cost. It is also easy to calibrate parameters so that it has the same parameters as the cell standard part, and has stable performance and parameters. It can be used for a long time and perform Hipot testing, and there is no need to stop production for the selection of cell standard parts, which reduces the test cost while not affecting the production progress of the cell.
[0031] In this embodiment, the conductive member 200 includes a conductive wire 210 and two electrical connection blocks 220. The two electrical connection blocks 220 are disposed at the axial ends of the housing 100. One end of the conductive wire 210 connects the simulated resistor 310 and the simulated capacitor 320 in parallel, while the other end extends axially along the housing 100 and out of the axial ends of the housing 100. The conductive wire 210 is electrically connected to the electrical connection blocks 220. The conductive wire 210 connects the simulated capacitor 320 and the simulated resistor 310 in parallel and electrically connects the electrical connection blocks 220 to the simulated capacitor 320 and the simulated resistor 310, resulting in a simple connection method.
[0032] Furthermore, the conductive member 200 further includes an elastic adapter 230. One end of the elastic adapter 230 is electrically connected to the conductive wire 210 and abuts against the outer wall of the housing 100, and the other end is electrically connected to the electrical connection block 220. The elastic adapter 230 utilizes its elastic force to securely abut against the electrical connection block 220, achieving a reliable electrical connection between the elastic adapter 230 and the electrical connection block 220, thereby electrically connecting the conductive wire 210 and the electrical connection block 220, and making the Hipot test more accurate and reliable.
[0033] like Figure 2 As shown, the housing 100 is provided with mounting grooves 111 at both axial ends, at least a portion of the conductive wire 210 is disposed in the mounting grooves 111, and the elastic adapter 230 abuts against the bottom wall 112 of the mounting groove 111. The provision of the mounting grooves 111 can reduce the space occupied by the elastic adapter in the axial direction of the housing 100, thereby reducing the circumferential space of the Hipot test simulated battery cell and facilitating the relevant Hipot test.
[0034] Optionally, the housing 100 includes a bottom shell 110 and a cover 120, the accommodating cavity 102 is formed between the bottom shell 110 and the cover 120, and the cover 120 is detachably connected to the bottom shell 110. The housing 100 is configured as a detachably connected bottom shell 110 and cover 120, and after the cover 120 is removed, the required simulated resistor 310 and simulated capacitor 320 can be replaced accordingly, thereby being suitable for Hipot testing of standard battery cell parts of different specifications, with lower equipment replacement costs and higher replacement efficiency, thereby improving the efficiency of the Hipot test.
[0035] Furthermore, the elastic adapter 230 includes a conductive spring or a conductive spring. Both the conductive spring and the conductive spring can achieve electrical connection between the connection block 220 and the conductive wire 210, and have a certain degree of compressibility. When squeezed by the connection block 220, they can firmly abut the surface of the connection block 220, achieving a stable conductive connection between the elastic adapter 230 and the connection block 220. In this embodiment, the conductive spring is selected, but other elastic and conductive structural members can also be selected, and will not be described in detail here.
[0036] Specifically, the cover 120 and the bottom shell 110 are secured together via a connector 101. It should be noted that the elastic adapter 230 and the tank bottom wall 112, as well as the power connection block 220 and the housing 100, are both detachably connected via the connector 101. In this embodiment, the connector 101 is a connecting screw, which secures the two components and prevents them from loosening. It also facilitates disassembly for replacement and maintenance, making it simple and convenient to operate.
[0037] In another optional embodiment, a connection hole 221 is provided on a side wall of one end of the power connection block 220 near the housing 100, and the conductive wire 210 is plugged and fixed into the connection hole 221. Unlike the above-mentioned connection method via an elastic adapter, in this embodiment, the conductive wire 210 is directly plugged and fixed into the connection hole 221 of the power connection block 220, thereby achieving a stable conductive connection between the conductive wire 210 and the power connection block 220. It should be noted that the conductive wire 210 can be plugged into the connection hole 221 via a plug-in structure such as a plug or socket, that is, after the conductive wire 210 is inserted into the connection hole 221, glue or welding is poured to secure the two. This will not be described in detail here.
[0038] This embodiment also provides a Hipot test device, which includes a Hipot test simulation cell as described in any of the above schemes. After the Hipot test simulation cell is supported by the Hipot test device, the relevant Hipot test is performed, which facilitates the quick disassembly and assembly of the Hipot test simulation cell, thereby improving test efficiency. At the same time, the Hipot test simulation cell is used to replace the cell standard parts for testing. The Hipot test simulation cell has a simple structure and is easy to process, with low manufacturing costs. It is also easy to calibrate parameters so that it has the same parameters as the cell standard parts, and has stable performance and parameters. It can be used for a long time and perform Hipot testing, and there is no need to stop production to select cell standard parts, which reduces the testing cost while not affecting the production progress of the cell.
[0039] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. Hipot test simulates the battery cell, which is characterized by: The invention comprises a housing (100), a conductive member (200), a simulated resistor (310) and a simulated capacitor (320), wherein the housing (100) has a housing cavity (102), the simulated resistor (310) and the simulated capacitor (320) are arranged in parallel and accommodated in the housing cavity (102), one end of the conductive member (200) is connected to the simulated resistor (310) and the simulated capacitor (320), and the other end is used for electrical connection with an external device; the resistance of the simulated resistor (310) is equal to the resistance of a standard battery cell, and the capacitance of the simulated capacitor (320) is equal to the capacitance of the standard battery cell.
2. The Hipot test simulation cell according to claim 1, characterized in that: The conductive member (200) comprises a conductive wire (210) and two connecting blocks (220). The two connecting blocks (220) are respectively arranged at two axial ends of the housing (100). One end of the conductive wire (210) connects the simulated resistor (310) and the simulated capacitor (320) in parallel, and the other end extends along the axial direction of the housing (100) and extends out of the two axial ends of the housing (100). The conductive wire (210) is electrically connected to the connecting blocks (220).
3. The Hipot test simulation battery cell according to claim 2, characterized in that: The conductive member (200) further includes an elastic adapter (230), one end of which is electrically connected to the conductive wire (210) and abuts against the outer wall of the housing (100), and the other end of which is electrically connected to the power connection block (220).
4. The Hipot test simulation battery cell according to claim 3, characterized in that: Both axial ends of the housing (100) are provided with mounting grooves (111), at least a portion of the conductive wire (210) is disposed in the mounting groove (111), and the elastic adapter (230) abuts against a groove bottom wall (112) of the mounting groove (111).
5. The Hipot test simulation battery cell according to claim 4, characterized in that: The elastic transition piece (230) and the groove bottom wall (112), as well as the power connection block (220) and the housing (100) are detachably connected via a connecting piece (101).
6. The Hipot test simulation battery cell according to claim 3, characterized in that: The elastic transition component (230) comprises a conductive spring or a conductive spring.
7. The Hipot test simulation battery cell according to claim 2, characterized in that: A connection hole (221) is provided on a side wall of one end of the power connection block (220) close to the housing (100), and the conductive wire (210) is plugged and fixed in the connection hole (221).
8. The Hipot test simulation battery cell according to claim 1, characterized in that: The housing (100) comprises a bottom shell (110) and a cover body (120), the accommodating cavity (102) is formed between the bottom shell (110) and the cover body (120), and the cover body (120) is detachably connected to the bottom shell (110).
9. The Hipot test simulation battery cell according to claim 8, characterized in that: The cover (120) and the bottom shell (110) are fixed via a connecting piece (101).
10. Hipot test device, characterized in that Comprising a Hipot test simulation battery cell as described in any one of claims 1-9.