Positioning aid

Abstract

The utility model discloses positioning auxiliary frock, including first locating block and second locating block, first locating block one end is provided with the clamping slot, second locating block can rotate and be connected on first locating block, rotates second locating block and makes its one end can extend into the clamping slot, and the space that extends into the clamping slot second locating block and the side wall between clamping slot form can be clamped the space of the edge beam of casing. The utility model's advantage lies in, through the setting of this frock, battery module can be installed in casing simply and quickly, guarantees the accurate positioning of module output stage and protection base, whole frock is small and exquisite light, and the installation process is simple and quick, and can easily take out frock without damage, guarantees battery module horizontal direction position consistency again with nimble clamping slot type positioning to a great extent avoids battery module and frock interference and damages battery module.

Description

Technical Field

[0001] This utility model relates to the field of assembly fixture technology, and in particular to a positioning auxiliary tooling. Background Technology

[0002] With the rapid development of new energy, the demand for lithium batteries and PACKs is constantly increasing, and major companies are continuously expanding their production capacity to enhance their competitiveness in the market. Traditional battery packs consist of five main parts: a lower housing, a module, a BMS, a thermal management system, and an upper housing. The assembly of the module and the lower housing involves suction cup lifting and installation. After the module is installed in the lower housing, the module's output stage is insulated and protected by an output stage protective base and an output stage protective cover. Traditional output stage protective bases are mainly designed horizontally and are installed before the module is installed in the lower housing. This design avoids interference between the module's output stage and the lower housing protective base. However, for battery packs with the output stage base located on the side and vertically, to avoid vertical interference, the protective base is installed after the module is installed in the housing. This design lacks corresponding horizontal limiters, resulting in significant swaying of the lower housing in the width direction during lifting. Furthermore, after the module and the lower housing are glued together, lateral slippage in the width direction is likely to occur. Therefore, it is impossible to guarantee the consistency of the module's horizontal placement position, causing interference between the output stage protective base installed after the module is installed in the housing and the module's output stage. Thus, developing auxiliary positioning fixtures for module installation in the lower housing becomes very meaningful.

[0003] Currently, for the design scheme of vertical orientation between the module output stage and the protective base, without auxiliary positioning fixtures, it is impossible to ensure the consistency of the horizontal placement of the module. This will cause interference between the protective base and the output stage after the module is installed in the lower housing. If the module shifts to one side after being installed in the lower housing using only auxiliary positioning fixtures, the positioning fixture will interfere with the module cover and cannot be removed. In more serious cases, the fixture may be damaged by friction with the surface of the cover and the battery cell terminals during the removal process. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to ensure the accurate positioning of the module output stage and the protective base while avoiding bumps and wear.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A positioning auxiliary tooling includes a first positioning block and a second positioning block. One end of the first positioning block is provided with a slot. The second positioning block is rotatably connected to the first positioning block. Rotating the second positioning block allows one end of it to extend into the slot, and a space is formed between the second positioning block extending into the slot and the side wall of the slot, which can engage the side beam of the housing.

[0007] Insert the end of the second positioning block into the slot, so that the tooling is locked onto the side beam after the end of the second positioning block is inserted into the slot. The battery module can be installed in the housing simply and quickly, ensuring the accurate positioning of the module output stage and the protective base. After positioning is completed, rotate the second positioning block to pull its end out of the slot, so that the positioning auxiliary tooling can be pulled out from the side beam of the housing, avoiding collision and wear between the positioning auxiliary tooling and the battery module when it is pulled out.

[0008] Preferably, the first positioning block has an inclined surface on the side near the inside of the housing, with the upper end of the inclined surface close to the second positioning block and the lower end of the inclined surface away from the second positioning block.

[0009] The inclined surface allows for coarse positioning of the battery module before it enters the housing, facilitating its entry and significantly reducing the likelihood of collisions between the tooling and the battery module during the process.

[0010] Preferably, the angle between the inclined plane and the horizontal plane is 0-60°.

[0011] The angle between the inclined plane and the horizontal plane is 0-60°, so that the inclined planes on the first positioning blocks that are snapped onto the side beams on both sides of the housing form an inverted "V" shape. This provides a rough positioning before the battery module enters the housing, making it easier for the battery module to enter the housing and greatly reducing the possibility of the tooling and the battery module colliding during the process of the battery module entering the housing.

[0012] Preferably, the first positioning block is further provided with a mounting groove, and the second positioning block is rotatably mounted on the mounting groove.

[0013] Preferably, the second positioning block is rotatably mounted on the mounting slot via a rotating shaft.

[0014] Preferably, the second positioning block is L-shaped, and a protrusion is provided in the middle of the vertical section of the second positioning block. The protrusion is located on the same side as the horizontal section of the second positioning block. The protrusion is rotatably connected to the first positioning block. Rotating the vertical section of the second positioning block causes the horizontal section of the second positioning block to extend into the slot.

[0015] Preferably, the ratio of the vertical segment width H1 to the horizontal segment width H2 of the second positioning block is 1:2.

[0016] Preferably, the ratio of the vertical segment length L1 to the horizontal segment length L2 of the second positioning block is 1:5.

[0017] Preferably, the length L3 of the first positioning block is not less than 0.6 times the length of the second positioning block.

[0018] By setting the dimensions of the first and second positioning blocks as described above, the weight of the tooling itself is greatly reduced, achieving lightweighting.

[0019] Preferably, the width H3 of the space formed between the second positioning block and the side wall of the slot is not greater than the thickness of the shell side beam.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] With this fixture, the battery module can be installed in the housing simply and quickly, ensuring the precise positioning of the module output stage and the protective base. The fixture is small and lightweight, and the installation process is simple and quick. It can also be easily removed without damage, ensuring the horizontal position of the battery module while the flexible slot-type positioning largely avoids interference between the battery module and the fixture, thus preventing damage to the battery module. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is a front view of an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the first positioning block in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the second positioning block in an embodiment of this utility model.

[0027] In the figure: 1. First positioning block; 101. Slot; 102. Mounting slot; 103. Inclined surface; 2. Second positioning block; 21. Vertical section; 22. Horizontal section; 23. Protrusion; 3. Rotating shaft; 4. Housing; 41. Side beam. Detailed Implementation

[0028] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0031] See Figures 1 to 4 This embodiment discloses a positioning auxiliary tooling, including a first positioning block 1 and a second positioning block 2.

[0032] The first positioning block 1 has a slot 101 at one end. In this embodiment, an installation slot 102 is provided on the first positioning block 1 above the slot 101. A rotating shaft 3 is installed on the installation slot 102. In this embodiment, the rotating shaft 3 is a detachable screw.

[0033] See Figure 5 The second positioning block 2 is L-shaped. A protrusion 23 is provided on the vertical section 21 of the second positioning block 2. The protrusion 23 and the horizontal section 22 of the second positioning block 2 are located on the same side. The protrusion 23 is rotatably connected to the rotating shaft 3, so that the second positioning block 2 can rotate on the first positioning block 1 with the rotating shaft 3 as the center. Rotating the vertical section 21 of the second positioning block 2 causes the horizontal section 22 of the second positioning block 2 to extend into the slot 101. A space is formed between the horizontal section 22 of the second positioning block 2 extending into the slot 101 and the side wall of the slot 101, which can engage the side beam 41 of the housing 4.

[0034] Furthermore, the end of the horizontal segment 22 away from the vertical segment 21 is also provided with a chamfer to reduce friction with the housing 4.

[0035] In this embodiment, refer to Figure 2 and Figure 5 The ratio of the width H1 of the vertical segment 21 of the second positioning block 2 to the width H2 of the horizontal segment 22 is 1:2, and the ratio of the length L1 of the vertical segment 21 of the second positioning block 2 to the length L2 of the horizontal segment 22 is 1:5. Taking into full account the principle of top-heavy and bottom-light, it is conducive to the fixing and locking of the tooling to the side beam 41 of the housing 4. Furthermore, the second positioning block 2 is set in an "L" shape and a protrusion 23 is set in the middle of the vertical segment 21 of the second positioning block 2, which greatly reduces the weight of the tooling itself and achieves lightweighting.

[0036] The length L3 of the first positioning block 1 is not less than 0.6 times the length of the second positioning block 2. In this embodiment, the length of the second positioning block 2 is the length L1 of the vertical segment 21 of the second positioning block 2, that is, the length L3 of the first positioning block 1 is not less than the length L1 of the vertical segment 21 of the second positioning block 2.

[0037] It should be noted that the dimensions of the above structures may be adjusted according to actual needs, and are not limited to the proportions described in this embodiment.

[0038] The width H3 of the space formed between the horizontal section 22 of the second positioning block 2 and the side wall of the slot 101 is not greater than the thickness of the side beam 41 of the housing 4, which increases the friction between the tooling and the side beam 41 and prevents the tooling from loosening during the process of the battery module entering the housing 4.

[0039] Furthermore, the first positioning block 1 is provided with an inclined surface 103 on the side near the inside of the housing 4. The upper end of the inclined surface 103 is located near the second positioning block 2, and the lower end of the inclined surface 103 is located away from the second positioning block 2. The angle between the inclined surface 103 and the horizontal plane is 0-60°. In this embodiment, the angle is 60°, but it is not limited to 60° and can be determined according to the actual situation. The inclined surface makes the inclined surfaces 103 on the first positioning block 1 that are engaged with the side beams 41 on both sides of the housing 4 form an inverted "V" shape. This provides a rough positioning before the battery module enters the housing 4, which facilitates the battery module entering the housing 4 and greatly reduces the possibility of the tooling and the battery module colliding during the process of the battery module entering the housing 4.

[0040] For details, please refer to the key points. Figure 3 The installation process in this embodiment is as follows:

[0041] Before the battery module enters the housing 4, four sets of this fixture are placed on the side beams 41 on both sides of the housing 4, that is, two sets of this fixture are placed on one side beam 41. Specifically, the slot 101 is clamped onto the side beam 41. The inclined surfaces 103 on the first positioning holes 1 of the fixtures on both side beams 41 are set opposite to each other. Then, the second positioning blocks 2 on each set of fixtures are rotated so that the horizontal section 22 of the second positioning block 2 is clamped into the slot 101. Since the width H3 of the space formed between the horizontal section 22 and the side wall of the slot 101 is not greater than the thickness of the side beam 41 of the housing 4, it is ensured that the fixture is locked on the side beam 42 after the horizontal section 22 is clamped into the slot 101. Then the battery module is hoisted onto the side beam 42. After the battery module is installed in the corresponding area of ​​the housing 4, the second positioning block 2 on each set of tooling is rotated in the opposite direction so that the horizontal section 22 of the second positioning block 2 is pulled out from the slot 101 and the tooling is removed from the side beam 41. Then the corresponding output stage protective base and protective cover are installed. Since there is a space between the horizontal section 22 of the second positioning block 2 and the side wall of the slot 101 to engage the side beam 41 of the housing 4, the first positioning block 1 can move away from the battery module after the end of the second positioning block 2 is pulled out from the slot 101. This allows the positioning auxiliary tooling to be pulled out from the side beam of the housing, avoiding collision and wear between the positioning auxiliary tooling and the battery module when it is pulled out.

[0042] In this embodiment, the battery module can be easily and quickly installed in the housing 4 through the tooling, thereby ensuring the accurate positioning of the module output stage and the protective base. The tooling is small and lightweight, the installation process is simple and quick, and the tooling can be easily removed without damage. While ensuring the horizontal position consistency of the battery module, the flexible slot-type positioning largely avoids interference between the battery module and the tooling, thus preventing damage to the battery module.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A positioning auxiliary tooling, characterized in that: It includes a first positioning block and a second positioning block. One end of the first positioning block has a slot. The second positioning block is rotatably connected to the first positioning block. Rotating the second positioning block allows one end of it to extend into the slot. A space is formed between the second positioning block extending into the slot and the side wall of the slot, which can engage the side beam of the housing.

2. The positioning auxiliary tooling according to claim 1, characterized in that: The first positioning block has an inclined surface on one side near the inside of the housing, with the upper end of the inclined surface close to the second positioning block and the lower end of the inclined surface away from the second positioning block.

3. The positioning auxiliary tooling according to claim 2, characterized in that: The angle between the inclined plane and the horizontal plane is 0-60°.

4. The positioning auxiliary tooling according to claim 1, characterized in that: The first positioning block is also provided with an installation groove, and the second positioning block can be rotatably installed on the installation groove.

5. A positioning auxiliary tooling according to claim 4, characterized in that: The second positioning block is rotatably mounted on the mounting slot via a rotating shaft.

6. The positioning auxiliary tooling according to claim 1, characterized in that: The second positioning block is L-shaped. A protrusion is provided in the middle of the vertical section of the second positioning block. The protrusion is located on the same side as the horizontal section of the second positioning block. The protrusion is rotatably connected to the first positioning block. Rotating the vertical section of the second positioning block causes the horizontal section of the second positioning block to extend into the slot.

7. A positioning auxiliary tooling according to claim 6, characterized in that: The ratio of the vertical segment width H1 to the horizontal segment width H2 of the second positioning block is 1:

2.

8. A positioning auxiliary tooling according to claim 6, characterized in that: The ratio of the vertical segment length L1 to the horizontal segment length L2 of the second positioning block is 1:

5.

9. A positioning auxiliary tooling according to claim 1, characterized in that: The length L3 of the first positioning block is not less than 0.6 times the length of the second positioning block.

10. A positioning auxiliary tooling according to claim 1, characterized in that: The width H3 of the space formed between the second positioning block and the side wall of the slot is not greater than the thickness of the upper beam of the shell.

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