A battery high current short circuit test device

Abstract

The present application provides a battery high current short circuit test device, which includes a positive electrode, a negative electrode and a connection unit; the positive electrode is connected to the positive electrode of the battery to be tested, and the negative electrode is connected to the negative electrode of the battery to be tested; the connection unit is connected between the positive electrode and the negative electrode, and the connection unit has a conducting state and a non-conducting state. When the connection unit is conducting, it is connected to an external current transformer such as a clamp meter or other current measuring instrument to measure the current when the battery is short-circuited, and the measured short-circuit current is compared with the corresponding multiple short-circuit current setting values ​​of the battery to be tested to determine whether the tested battery meets the product standard. The test process is simple and easy to operate, and the tested battery remains motionless during the test, and the test is stable and reliable.

Description

Technical Field

[0001] The present application belongs to the technical field of battery testing equipment, and specifically relates to a battery high current short circuit testing device. Background Art

[0002] In the safety certification and evaluation of lithium battery products, battery short-circuit testing is an important means of evaluating battery safety performance. Therefore, lithium batteries need to be tested for their short-circuit protection function during the production quality inspection stage to comply with national regulations on battery performance standards. For example, the patent document with patent number CN216209727U discloses a battery short-circuit testing device, in which the battery to be tested is placed in a placement slot of the testing device, and the positive and negative poles of the battery are respectively contacted with two contact circular plates for testing by twisting the handle. After the test is completed, the handle is twisted in the opposite direction to remove the battery from the placement slot. The testing device needs to be manually connected and disconnected with the positive and negative poles of the battery, and the operation is relatively cumbersome. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a battery high current short circuit test device to solve the problems raised in the above background technology.

[0004] The present application provides a battery high current short circuit test device, comprising a positive electrode, a negative electrode and a connecting unit;

[0005] The positive electrode member is connected to the positive electrode of the battery to be tested;

[0006] The negative electrode member is connected to the negative electrode of the battery to be tested;

[0007] The connection unit is connected between the positive electrode member and the negative electrode member, and the connection unit has a conducting state and a non-conducting state.

[0008] Furthermore, the connecting unit includes a first connecting member, a second connecting member, a supporting member, a driving member and a conducting member;

[0009] Both ends of the support member are connected to the first connecting member and the second connecting member respectively;

[0010] The driving member is connected to the supporting member, and the output end of the driving member is connected to the conducting member;

[0011] One end of the first connecting member is connected to the positive electrode member, and the other end of the first connecting member is matched with the conducting member;

[0012] One end of the second connecting member is connected to the negative electrode member, and the other end of the second connecting member is matched with the conducting member;

[0013] The conducting member, under the control of the driving member, simultaneously contacts or disconnects with the matching ends of the first connecting member and the second connecting member to put the connecting unit in a conducting state or a non-conducting state.

[0014] Furthermore, the driving component includes an electric cylinder and an electric screw.

[0015] Furthermore, an insulating support plate for isolating the support member from the driving member is connected between the output ends of the supporting member and the driving member.

[0016] Furthermore, the connection unit also includes a reinforcement plate, and two ends of the reinforcement plate are respectively fixedly connected to the other end of the first connection member and the other end of the second connection member.

[0017] Furthermore, the positive electrode member has a plurality of positive electrode mounting holes, and the negative electrode member has a plurality of negative electrode mounting holes, the positive electrode mounting holes correspond one to one with the negative electrode mounting holes, the positive electrode mounting holes transitionally match the positive electrodes of the battery to be tested, and the negative electrode mounting holes transitionally match the negative electrodes of the battery to be tested.

[0018] Furthermore, the positive electrode member has a plurality of positive electrode mounting grooves, and the negative electrode member has a plurality of negative electrode mounting grooves, and the positive electrode mounting grooves correspond to the negative electrode mounting grooves one by one.

[0019] This application has the following beneficial effects:

[0020] The present application discloses a battery high current short circuit test device comprising a positive electrode, a negative electrode and a connection unit; the positive electrode is connected to the positive electrode of the battery to be tested, and the negative electrode is connected to the negative electrode of the battery to be tested; the connection unit is connected between the positive electrode and the negative electrode, and the connection unit has a conducting state and a non-conducting state. When the connection unit is conducting, it is connected to an external current transformer such as a clamp meter or other current measuring instrument to measure the current when the battery is short-circuited, and the measured short-circuit current is compared with the corresponding multiple short-circuit current setting values ​​of the battery to be tested to determine whether the tested battery meets the product standard. The test process is simple and easy to operate, and the tested battery remains stationary during the test, and the test is stable and reliable. The connection unit of the present application includes a first connection member, a second connection member, a support member, a driving member and a conductive member; one end of the first connection member is connected to the positive electrode member; one end of the second connection member is connected to the negative electrode member; the two ends of the support member are respectively connected to the first connection member and the second connection member; the driving member is connected to the support member, and the output end of the driving member is connected to the conductive member; under the control of the driving member, the conductive member simultaneously contacts or disconnects with the other ends of the first connection member and the second connection member to realize the conductive state and the non-conductive state of the connection unit, and a device driven by a motor and capable of mechanical reciprocating motion is selected as the driving member. The tester only needs to remotely control the switch to realize the conduction of the connection unit, thereby improving the safety of the short-circuit test. Multiple mounting holes or mounting slots are designed on the positive electrode member and the negative electrode member, so that the battery high-current short-circuit test device can test multiple batteries to be tested at the same time, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall schematic diagram of a battery high current short circuit test device provided in some embodiments of the present application,

[0022] Figure 2 is a front view of a battery high current short circuit test device provided in some embodiments of the present application,

[0023] Figure 3 is a top view of a battery high current short circuit test device provided in some embodiments of the present application;

[0024] Figure 4 This is a left view of a battery high current short circuit testing device provided in some embodiments of the present application.

[0025] Description of reference numerals:

[0026] 100. Battery to be tested, 101. Positive electrode, 102. Negative electrode, 103. Conductive member, 104. First connecting member, 105. Second connecting member, 106. Support member, 107. Reinforcement plate, 108. Support plate, 109. Driving member. DETAILED DESCRIPTION

[0027] In order to more clearly and completely describe the technical solution of the present application, the present application is further described in detail through specific embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Various changes can be made within the scope of the rights specified in the present application.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] like Figure 1As shown, the present application provides a battery high current short circuit test device, including a positive electrode member 101, a negative electrode member 102 and a connection unit; the positive electrode member 101 is connected to the positive electrode of the battery 100 to be tested; the negative electrode member 102 is connected to the negative electrode of the battery 100 to be tested; the connection unit is connected between the positive electrode member 101 and the negative electrode member 102, and the connection unit has a conducting state and a non-conducting state. When the connection unit is in the conducting state, the positive and negative electrodes of the battery 100 to be tested connected to the battery high current short circuit test device are conducted by the connection unit, and the battery 100 to be tested is in a short circuit state. At this time, an external current transformer such as a clamp meter or other current measuring instrument is used, and its test end is connected to the battery high current short circuit test device to measure the current when the battery is short-circuited, and the measured short-circuit current is compared with the short-circuit current setting value of the battery 100 to be tested to determine whether the tested battery meets the product standard. The positive electrode member 101 and the negative electrode member 102 are made of metal or alloy with good electrical conductivity. In one embodiment of the present embodiment, the positive electrode member 101 and the negative electrode member 102 are a pair of copper flat plates.

[0031] like Figure 1-4 As shown, in some embodiments provided by the present application, the connection unit includes a first connector 104, a second connector 105, a support member 106, a driver 109 and a conductive member 103; both ends of the support member 106 are respectively connected to the first connector 104 and the second connector 105; the driver 109 is connected to the support member 106, and the output end of the driver 109 is connected to the conductive member 103; one end of the first connector 104 is connected to the positive electrode member 101, and the other end of the first connector 104 matches the conductive member 103; one end of the second connector 105 is connected to the negative electrode member 102, and the other end of the second connector 105 matches the conductive member 103; under the control of the driver 109, the conductive member 103 simultaneously contacts or disconnects with the matching ends of the first connector 104 and the second connector 105 to put the connection unit in a conductive state or a non-conductive state. In this embodiment, the first connector 104, the second connector 105 and the conductive member 103 are made of metal or alloy with good conductivity so that they can be connected to the circuit of the battery to be tested 100, the positive electrode 101 and the negative electrode 102. In one example of this embodiment, the first connector 104, the second connector 105 and the conductive member 103 are all copper plates with good conductivity.

[0032] In some embodiments provided in the present application, the driving member 109 is a device driven by a motor and capable of mechanical reciprocating motion. In one of the embodiments of the embodiment, the positive and negative electrodes of the battery to be tested are connected to the positive electrode member 101 and the negative electrode member 102 respectively, and the driving member 109 is an electric cylinder; the conducting member 103 is connected to the telescopic end of the electric cylinder, and the switch of the electric cylinder is started, and the conducting member 103 connected to the telescopic end of the cylinder rises until it contacts the other ends of the first connecting member 104 and the second connecting member 105 at the same time to realize the conducting state of the connecting unit; the positive and negative electrodes of the battery to be tested 100 connected to the battery large current short circuit test device are conducted by the positive electrode member 101, the first connecting member 104, the conducting member 103, the second connecting member 105 and the negative electrode member 102, and the battery to be tested 100 is in a short circuit state. At this time, an external current transformer such as a clamp meter or other current measuring instrument is used, and its test end is connected to the battery large current short circuit test device and conducted to measure the current when the battery is short-circuited, and the measured short-circuit current is compared with the short-circuit current setting value of the battery to be tested 100 to determine whether the tested battery meets the product standard. When the electric cylinder is turned off, the telescopic end of the cylinder falls back, and the conductive member 103 connected to the telescopic end of the cylinder falls accordingly, and the conductive member 103 is disconnected from the other ends of the first connecting member 104 and the second connecting member 105 at the same time to realize the non-conductive state of the connecting unit; in another embodiment of this embodiment, the driving member 109 is an electric screw rod, and the conductive member 103 is connected to the telescopic end of the electric screw rod. With the control of the electric screw rod, the conductive member 103 connected to the telescopic end of the screw rod reciprocates and contacts or disconnects from the other ends of the first connecting member 104 and the second connecting member 105 at the same time to realize the conductive state and the non-conductive state of the connecting unit.

[0033] In some embodiments provided in the present application, an insulating support plate 108 for isolating the conductive member 103 and the driver 109 is also connected between the output ends of the conductive member 103 and the driver 109. The support plate 108 made of insulating material allows the output ends of the conductive member 103 and the driver 109 to maintain good electrical isolation to avoid safety accidents. The support plate 108 can be made of bakelite with good insulation performance.

[0034] In some embodiments provided in the present application, the connection unit also includes a reinforcement plate 107, the two ends of the reinforcement plate 107 are respectively fixedly connected to the other end of the first connector 104 and the other end of the second connector 105 to make the connection unit structure more stable. The reinforcement plate 107 is made of a material with good insulation properties to avoid a short circuit between the first connector 104 and the second connector 405 due to the connection of the reinforcement plate.

[0035] In some embodiments provided in the present application, there are several positive electrode mounting holes on the positive electrode member 101, and several negative electrode mounting holes on the negative electrode member 102, and the positive electrode mounting holes correspond to the negative electrode mounting holes one by one; when the positive and negative electrodes of the battery 100 to be tested are both columnar, the positive electrode mounting hole transitions with the positive electrode of the battery 100 to be tested, and the negative electrode mounting hole transitions with the negative electrode of the battery 100 to be tested. In this embodiment, the battery high current short circuit test device can simultaneously perform high current short circuit tests on multiple batteries to be tested. When the connection unit is in a conducting state, the positive and negative electrodes of the multiple batteries 100 to be tested connected to the battery high current short circuit test device are conducted by the connection unit, and the battery 100 to be tested is in a short circuit state. At this time, the battery high current short circuit device is connected to an external current transformer such as a clamp meter or other current measuring instrument to measure the current when the battery is short-circuited, and the measured short circuit current is compared with the corresponding short circuit current setting values ​​of the multiple batteries 100 to be tested to determine whether the tested battery meets the product standards, thereby improving the test efficiency. Figure 1-4 As shown, in one embodiment of the present embodiment, there are six positive electrode mounting holes and six negative electrode mounting holes respectively, and the battery high current short circuit test device can perform high current short circuit test on one or two, three, four or even six batteries at the same time.

[0036] In some embodiments provided in the present application, the positive electrode member 101 has a plurality of positive electrode mounting grooves, and the negative electrode member 102 has a plurality of negative electrode mounting grooves, and the positive electrode mounting grooves correspond to the negative electrode mounting grooves one by one. When the positive and negative electrodes of the battery 100 to be tested are columnar, the positive and negative electrodes of the battery 100 to be tested can be pushed into the corresponding positive electrode mounting groove and negative electrode mounting groove to be connected to the positive electrode member 101 and the negative electrode member 102 respectively. In this embodiment, the battery high current short circuit test device can perform high current short circuit tests on multiple batteries 100 to be tested at the same time. When the connecting unit is in a conducting state, the positive and negative electrodes of the multiple batteries 100 to be tested stuck in the positive electrode mounting groove and the negative electrode mounting groove are conducted by the connecting unit, and the batteries 100 to be tested are all in a short circuit state. At this time, an external current transformer such as a clamp meter or other current measuring instrument is used, and its test end is connected to the battery high current short circuit test device to measure the current when the battery is short-circuited. The measured short-circuit current is compared with the corresponding short-circuit current setting values ​​of the multiple batteries 100 to be tested to determine whether the tested battery meets the product standard.

[0037] The above is a detailed introduction to a battery high current short circuit test device provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A battery high current short circuit test device, characterized in that: It comprises a positive electrode member (101), a negative electrode member (102) and a connecting unit; The positive electrode member (101) is connected to the positive electrode of the battery to be tested (100); The negative electrode member (102) is connected to the negative electrode of the battery to be tested (100); The connection unit is connected between the positive electrode member (101) and the negative electrode member (102), and the connection unit has a conducting state and a non-conducting state.

2. The battery high current short circuit test device according to claim 1, characterized in that: The connection unit comprises a first connection member (104), a second connection member (105), a support member (106), a driving member (109) and a conducting member (103); Two ends of the support member (106) are respectively connected to the first connecting member (104) and the second connecting member (105); The driving member (109) is connected to the supporting member (106), and the output end of the driving member (109) is connected to the conducting member (103); One end of the first connecting member (104) is connected to the positive electrode member (101), and the other end of the first connecting member (104) is matched with the conducting member (103); One end of the second connecting member (105) is connected to the negative electrode member (102), and the other end of the second connecting member (105) is matched with the conducting member (103); The conducting member (103) is controlled by the driving member (109) to simultaneously contact or disconnect with the matching ends of the first connecting member (104) and the second connecting member (105), so that the connecting unit is in a conducting state or a non-conducting state.

3. The battery high current short circuit test device as claimed in claim 2, characterized in that: The driving member (109) comprises an electric cylinder and an electric screw.

4. The battery high current short circuit test device as claimed in claim 2, characterized in that: An insulating support plate (108) for isolating the conducting member (103) from the driving member (109) is also connected between the output ends of the conducting member (103) and the driving member (109).

5. The battery high current short circuit test device as claimed in claim 2, characterized in that: The connection unit further comprises a reinforcing plate (107), two ends of which are respectively fixedly connected to the other end of the first connecting member (104) and the other end of the second connecting member (105).

6. The battery high current short circuit test device according to claim 1, characterized in that: The positive electrode member (101) has a plurality of positive electrode mounting holes, and the negative electrode member (102) has a plurality of negative electrode mounting holes, the positive electrode mounting holes are matched one-to-one with the negative electrode mounting holes, the positive electrode mounting holes are transitionally matched with the positive electrodes of the battery to be tested (100), and the negative electrode mounting holes are transitionally matched with the negative electrodes of the battery to be tested (100).

7. The battery high current short circuit test device according to claim 1, characterized in that: The positive electrode member (101) is provided with a plurality of positive electrode mounting grooves, and the negative electrode member (102) is provided with a plurality of negative electrode mounting grooves, and the positive electrode mounting grooves correspond to the negative electrode mounting grooves in a one-to-one matching manner.

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