Battery cell charging clamp and charging device

Abstract

The utility model provides a battery cell charging clamp, which is used for clamping a battery cell with pole columns on two sides and comprises a main body part and a conductive part, the main body part is provided with a first end and a second end capable of getting close to or away from the first end, and the first end and the second end jointly clamp a battery cell; conductive parts penetrate through the first end and the second end, one end of each conductive part is in contact with a pole of the battery cell, and the other end is connected with a charging power supply. The battery cell charging clamp can be clamped on a battery cell, the conductive part is connected with a pole and a charging power supply, and a connection point of the charging power supply can be moved to the outer side of the main body part, so that wiring is facilitated, and the charging operation efficiency of the battery cell is further improved; by changing the distance between the first end and the second end, the battery cell charging clamp can adapt to battery cells with different lengths, so that the applicability of the battery cell charging clamp is wider.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery charging technical field, especially relates to a battery cell charging clamp. BACKGROUND

[0002] With the ageing of the battery pack, the self-discharge inconsistency of each battery cell in the pack will cause the gradual increase of the SOC (State of charge) consistency of each battery cell, and the battery cell outlying problem will occur. Since the battery pack takes the voltage of the highest / lowest battery cell in the pack as the judgment condition for charging / discharging cutoff, the outlying battery cell will cause other battery cells in the pack to be not fully charged or not fully discharged, resulting in the reduction of the vehicle's endurance. In addition, when the BMS (Battery management system) estimates the SOC of the battery pack, it is also based on the highest / lowest voltage of the battery cell in the pack. The SOC of the battery pack in the discharging process is taken as the SOC of the battery cell with the lowest voltage, and the SOC of the battery pack in the charging process is taken as the SOC of the battery cell with the highest voltage. Therefore, the large difference in the SOC in the battery pack will cause the problem of the increase of the SOC estimation deviation. Therefore, it is necessary to supplement the power to the outlying single battery cell in the battery pack to reduce the difference in the SOC consistency of the battery cell and improve the vehicle's endurance mileage.

[0003] For the battery cell with the pole post on both sides, when supplementing the power to a certain outlying battery cell in the battery pack, the positive and negative output ends of the charging and discharging machine are usually welded or bonded to the positive and negative pole posts of the battery cell. However, this method is relatively cumbersome and has low power supplementing operation efficiency. SUMMARY

[0004] Therefore, the utility model aims at providing a battery cell charging clamp to improve the power supplementing operation efficiency of the battery cell.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A battery cell charging clamp for clamping the battery cell with the pole post on both sides, comprising a main body part and a conductive part.

[0007] The main body part has a first end and a second end capable of approaching or moving away from the first end, and the first end and the second end jointly clamp the battery cell. The conductive part is provided on the first end and the second end, one end of the conductive part contacts the pole post of the battery cell, and the other end is used for connecting the charging power supply.

[0008] Further, the main body part comprises a first support, a second support and a fastener.

[0009] The first end is arranged on the first support, and the second end is arranged on the second support; the second support is slidably connected to the first support to adjust the distance between the first end and the second end; and the fastener can fix the relative position of the first support and the second support.

[0010] Further, the first support is in the shape of "L", one end of which is provided with a conductive part, and the other end of which is slidably penetrated through the second support.

[0011] Further, the fastener has a stud end, the stud end is penetrated through and screwed to the second support and abuts against the first support to form a friction locking between the second support and the first support.

[0012] Further, the fastener is provided with a handle away from the stud end.

[0013] Further, the first support is provided with a limiting groove along the sliding direction of the second support, and the stud end is arranged in the limiting groove.

[0014] Further, the conductive part comprises a contact block, a terminal and a wire;

[0015] The contact block contacts the pole, the terminal is connected to the charging power supply, and the wire is connected to the contact block and the terminal and is arranged in the main body.

[0016] Further, the main body is made of polyethylene terephthalate material.

[0017] Further, the conductive part is made of copper material.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The electric core charging clamp can be clamped on the electric core, the conductive part is connected to the pole and the charging power supply, the connecting point of the charging power supply can be moved to the outside of the main body, wiring is facilitated, and the efficiency of the power supply operation on the electric core is improved; by changing the distance between the first end and the second end, the electric core charging clamp can be adapted to electric cores of different lengths, and the applicability of the electric core charging clamp is wider.

[0020] Secondly, the separate arrangement of the first support and the second support facilitates processing, and adjusting the position of the second support is also relatively convenient; the relative position of the first support and the second support can be locked by the fastener after the first support and the second support are cooperatively clamped on the electric core, and the clamping state is maintained. The "L"-shaped structure of the first support is relatively simple, and the second support is slidably sleeved on the first support and is relatively stable. By tightening the fastener, the stud end can press the first support on the second support, the friction between the first support and the second support is relatively large, and the first support and the second support are not easy to be loosened.

[0021] In addition, the handle arranged on the fastener can facilitate the operator to screw the fastener, so that the fastener can be fastened without special tools, and the use convenience of the battery cell charging clamp is improved. The limiting groove is arranged, and the stud end slides in the limiting groove, so that the sliding of the second support can be guided, and the deviation and torsion of the second support relative to the first support are reduced.

[0022] Furthermore, the contact block, the terminal and the wire can directly guide the power of the charging power supply to the pole, the wire can be connected to the contact block and the terminal with less material, and the wire arranged in the second support is not easy to be scratched and damaged by external collision. The polyethylene terephthalate has good insulation performance, good structural strength and good wear resistance, so that the battery cell charging clamp is more durable. The contact block, the wire and the terminal are made of copper material, which can play a good conductive role and realize efficient current transmission.

[0023] Another purpose of the utility model is to provide a charging device, the charging device is equipped with the battery cell charging clamp as described above.

[0024] The charging device disclosed by the utility model has the same beneficial effects as the battery cell charging clamp relative to the prior art, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the application, and are incorporated herein for explanation. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 The structure schematic view of the battery cell charging clamp of the utility model embodiment one is shown in the figure;

[0027] Figure 2 The structure schematic view of the fastener, the first support and the second support of the utility model embodiment one is shown in the figure. Figure 1 The local enlarged view of the middle A part;

[0028] Figure 3 The structure schematic view of the fastener, the first support and the second support of the utility model embodiment one is shown in the figure.

[0029] Explanation of reference signs:

[0030] 1, main body part;

[0031] 101, first support; 1011, limiting groove; 102, second support; 103, fastener; 1031, stud end; 1032, handle;

[0032] 2, conductive part;

[0033] 201, contact block; 202, terminal; 203, wire;

[0034] 3, battery cell; 301, pole;

[0035] 4, battery pack housing. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the utility model, it should be noted that if the terms indicating the orientation or position relationship such as 'up', 'down', 'inner', 'outer' appear, it is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, if the terms 'first','second' appear, they are also used for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms'mounting', 'connection', 'connection', 'connecting piece' should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific circumstances.

[0039] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0040] Embodiment one

[0041] The embodiment relates to a battery cell charging clamp, which aims to improve the power supply operation efficiency of the battery cell.

[0042] In the overall structure, the battery cell charging clamp in the embodiment is used for clamping the battery cell with the poles on both sides, and comprises a main body part and a conductive part.

[0043] The main body part has a first end and a second end capable of approaching or moving away from the first end, and the first end and the second end jointly clamp the battery cell. The conductive part is arranged through the first end and the second end, one end of the conductive part contacts the pole of the battery cell, and the other end is used for connecting the charging power supply.

[0044] As set forth above, the battery cell charging clamp according to the present embodiment can be clamped on the battery cell, and the conductive part is connected to the pole and the charging power supply, so that the connection point of the charging power supply can be moved to the outside of the main body part, facilitating wiring and further improving the efficiency of the power supply operation on the battery cell. In addition, by changing the distance between the first end and the second end, the battery cell charging clamp can be adapted to battery cells of different lengths, and the applicability of the battery cell charging clamp is wider.

[0045] Based on the above overall introduction, referring to Figures 1 to 3 Specifically, the battery cell 3 charging clamp according to the present embodiment can be clamped on any one of the battery cells 3 in the battery pack shell 4 to facilitate charging the battery cells 3. The conductive part 2 on the first end can be connected to the positive pole 301 of the battery cell 3 or the negative pole 301 of the battery cell 3, and correspondingly, the conductive part 2 on the second end can be connected to the other polarity pole 301 of the battery cell 3. In the present embodiment, the conductive part 2 on the first end is connected to the positive pole of the battery cell 3, and the conductive part 2 on the second end is connected to the negative pole of the battery cell 3.

[0046] In the present embodiment, the main body part 1 includes a first support 101, a second support 102, and a fastener 103. The first end is arranged on the first support 101, and the second end is arranged on the second support 102. The second support 102 is slidably connected to the first support 101 to adjust the distance between the first end and the second end. The fastener 103 can fix the relative position of the first support 101 and the second support 102. The separate arrangement of the first support 101 and the second support 102 facilitates processing, and adjusting the position of the second support 102 is also relatively convenient when in use. The relative position of the first support 101 and the second support 102 can be locked by the fastener 103 after the first support 101 and the second support 102 cooperate to clamp the battery cell 3, and the clamping state is maintained.

[0047] It can be understood that the structure of the main body part 1 can also be a telescopic structure, i.e., the first end and the second end are respectively two telescopic ends of a telescopic structure, and different lengths of battery cells 3 can be adapted and clamped by the telescopic structure. Of course, other structures that can adjust the distance between the first end and the second end can also be used.

[0048] Further, the first support 101 is in the shape of "L", one end is provided with the conductive part 2, and the other end is slidably penetrated through the second support 102. The first support 101 is arranged in the shape of "L" to make the structure more concise, and the second support 102 is slidably sleeved on the first support 101 to make the sliding more stable. In the present embodiment, the cross section of the first support 101 is rectangular, and the second support 102 is in the shape of a long strip, and the middle part of the second support 102 is provided with a rectangular hole through which the first support 101 penetrates.

[0049] Secondly, for the structure of the fastener 103, the fastener 103 of the embodiment has a threaded end 1031 which penetrates the second support 102 and abuts against the first support 101 to form a frictional locking between the second support 102 and the first support 101. By screwing the fastener 103, the threaded end 1031 can press the first support 101 against the second support 102, and the friction between the first support 101 and the second support 102 is large, so that the two supports are not easy to be loosened, and the connection is firm and reliable and easy to adjust.

[0050] Meanwhile, the fastener 103 is provided with a handle 1032 away from the threaded end 1031. The handle 1032 provided on the fastener 103 can facilitate the operator to screw the fastener 103, so that the fastener 103 can be tightened without special tools, and the use convenience of the battery cell 3 charging clamp is improved. The handle 1032 of the embodiment is in the shape of a knob, which is convenient for the operator to hold and rotate. It can be understood that the handle 1032 can also be in the shape of a butterfly or a rectangle, as long as it can be easily held.

[0051] Further, the first support 101 is provided with a limiting groove 1011 in the sliding direction of the second support 102, and the threaded end 1031 is arranged in the limiting groove 1011. The limiting groove 1011 is arranged to guide the sliding of the second support 102, so as to reduce the deviation and torsion of the second support 102 relative to the first support 101. Specifically, the limiting groove 1011 is a rectangular cross-section groove which can better accommodate the threaded end 1031.

[0052] Preferably, the main body 1 is made of polyethylene terephthalate material. Polyethylene terephthalate has good insulation performance, as well as good structural strength and wear resistance, so that the battery cell 3 charging clamp is more durable.

[0053] In addition, the conductive part 2 includes a contact block 201, a terminal 202 and a wire 203. The contact block 201 contacts the pole 301, the terminal 202 is connected to a charging power source, and the wire 203 connects the contact block 201 and the terminal 202 and is arranged in the main body 1. The contact block 201, the terminal 202 and the wire 203 can directly guide the power of the charging power source to the pole 301, the wire 203 can be used to connect the contact block 201 and the terminal 202 with less material, and the wire 203 arranged in the second support 102 can be less likely to be scratched and damaged by external collision. In the embodiment, one end of the contact block 201 is embedded in the first support 101 or the second support 102 and connected to the wire 203, so that the contact block 201 is not easy to fall off and deviate during use.

[0054] Preferably, the contact block 201, the wire 203 and the terminal 202 are made of copper material, which can play a good conductive role and realize efficient current transmission.

[0055] The electric core 3 charging clamp can be clamped on the electric core 3, and the conductive part 2 is connected with the pole 301 and the charging power supply, so that the efficiency of the power supply operation of the electric core 3 can be improved.

[0056] Embodiment two

[0057] The embodiment relates to a charging device provided with the electric core charging clamp in the embodiment one. The electric core charging clamp in the embodiment one can improve the charging efficiency of the charging device used by an operator on a single electric core, and the charging device can charge electric cores with different lengths.

[0058] In specific implementation, for example, when the charging power supply is a charge-discharge machine, the electric core charging clamp is first clamped at the positive and negative ends of the electric core, then the output end of the charge-discharge machine is installed with an alligator clip, and the alligator clip is clamped on the terminal with the corresponding polarity, so that the electric core can be charged.

[0059] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An electric cell charging clamp for clamping an electric cell with poles on two sides, characterized in that: comprising a main body and a conductive part; the main body has a first end and a second end capable of approaching or moving away from the first end, the first end and the second end together clamp the electric cell; the first end and the second end are both provided with a conductive part, one end of the conductive part contacts the pole of the electric cell, and the other end is used to connect a charging power supply.

2. The electric cell charging clamp according to claim 1, characterized in that: the main body comprises a first support, a second support and a fastener; the first end is arranged on the first support, and the second end is arranged on the second support; the second support is slidingly connected to the first support to adjust the distance between the first end and the second end; the fastener can fix the relative position of the first support and the second support.

3. The electric cell charging clamp according to claim 2, characterized in that: the first support is "L" shaped, one end is provided with a conductive part, and the other end slidingly penetrates the second support.

4. The electric cell charging clamp according to claim 3, characterized in that: the fastener has a stud end, the stud end penetrates and screws the second support and abuts against the first support to form a friction locking between the second support and the first support.

5. The electric cell charging clamp according to claim 4, characterized in that: the fastener is provided with a handle away from the stud end.

6. The electric cell charging clamp according to claim 4, characterized in that: the first support is provided with a limiting groove in the sliding direction of the second support, and the stud end is arranged in the limiting groove.

7. The electric cell charging clamp according to claim 1, characterized in that: the conductive part comprises a contact block, a terminal and a wire; the contact block contacts the pole, the terminal connects the charging power supply, and the wire connects the contact block and the terminal and penetrates the main body.

8. The electric cell charging clamp according to claim 1, characterized in that: the main body is made of polyethylene terephthalate material.

9. The electric cell charging clamp according to claim 1, characterized in that: the conductive part is made of copper material.

10. A charging device, characterized in that: the charging device is equipped with the electric cell charging clamp according to any one of claims 1 to 9. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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