Temperature sensing fixture

Abstract

The utility model discloses a kind of temperature sensing fixed structures, belong to battery design technical field.Mainly by bracket and bracket upper cover cooperate by buckle interlocking structure, bracket and bracket upper cover are by injection molding process forming, the second hollow structure on bracket is sleeved on the pole of electricity core, pole and bracket limit groove jointly fix bracket, bracket back surface design reinforcement rib increases the strength of entire bracket;Temperature sensing is composed of upper wallboard, flexible circuit board, lower wallboard, heat-conducting silica gel pad, is placed in the first hollow structure of bracket;Bracket upper cover and bracket are mutually matched and heat-conducting silica gel pad of excess is pressed in electricity core, so that temperature sensing accurately and effectively gathers electricity core ontology.Solve the fixation when temperature sensing gathers electricity core under the condition of no tray, avoid the non-uniformity of gluing fixation, reduce the process difficulty, and the temperature sensing fixed bracket has universality, can be adjusted according to the thickness of electricity core and the position of temperature sensing.

Description

Technical Field

[0001] This utility model belongs to the field of battery design technology, and specifically relates to a temperature-sensing fixing structure. Background Technology

[0002] In electric vehicles and large-scale energy storage systems, accurate and effective temperature monitoring of battery cells is a crucial safety feature for new energy electric vehicles. With advancements in technology, the traditional tray-based temperature sensor design is gradually being phased out due to mold costs, product costs, and weight. Using structural adhesive to fix the temperature sensor introduces significant uncontrollability in terms of adhesive application and manual operation. Therefore, there is an urgent need to design a tray-less temperature sensor fixing structure to solve the problem of temperature monitoring of the battery cell itself. Utility Model Content

[0003] To address the above problems, this utility model proposes a temperature-sensing fixing structure, comprising:

[0004] The bracket is fixed to the terminal post of the battery cell;

[0005] The bracket cover, positioned above the bracket, forms a snap-lock structure with the bracket, pressing the temperature sensor firmly onto the battery cell. By employing a trayless snap-lock temperature sensor fixing structure, the problem of fixing the temperature-sensing battery cell in trayless situations is solved, avoiding inconsistencies in glued fixing, reducing manufacturing complexity, and the temperature sensor fixing bracket is versatile, adjustable according to the cell thickness and temperature sensor position, reducing battery pack costs. Furthermore, the trayless design reduces the module thickness.

[0006] Furthermore, the support includes:

[0007] The first hollow structure is set on the bracket and is used to assemble the temperature sensor; a buckle limiting groove is opened on the inner side wall of the first hollow structure;

[0008] The second hollow structure is set on the side of the bracket away from the first hollow structure and is adapted to the pole post to fit the temperature sensor onto the pole post.

[0009] A bracket limiting boss is disposed between the second hollow structure and the first hollow structure;

[0010] The upper cover positioning boss is located at the edge of the first hollow structure and close to the bracket limiting boss.

[0011] Furthermore, reinforcing ribs are provided on the back of the bracket. The design of the bracket limiting boss and the back reinforcing ribs allows the overall structure to withstand vibrations better.

[0012] Furthermore, the bracket cover includes:

[0013] The buckle is located on the back of the bracket cover and interlocks with the buckle limiting groove;

[0014] The upper cover positioning groove is formed on the upper cover of the bracket and matches the upper cover positioning boss.

[0015] Furthermore, the temperature sensor comprises an upper wall panel, a flexible circuit board, a lower wall panel, and a thermally conductive silicone pad, which are stacked sequentially.

[0016] Furthermore, the bracket cover also includes:

[0017] The temperature sensing observation hole is located in the temperature measurement area of ​​the flexible circuit board.

[0018] Furthermore, the snap-lock structure consists of a snap-lock limiting groove and a snap-lock. This utility model employs a snap-lock structure combined with a double locking mechanism of a top cover positioning boss and a top cover positioning groove to ensure that the bracket top cover does not detach under impact conditions.

[0019] Furthermore, the temperature-sensing fixing structure also includes an electrode plate, on which a bracket limiting groove is provided, which cooperates with the bracket limiting boss to play a role in preventing rotation.

[0020] Furthermore, the second hollow structure is adapted to the cross-sectional shape of the pole post.

[0021] Furthermore, both the bracket and the bracket cover are made of plastic. This utility model's temperature sensing fixing structure is versatile and can be used to fix the temperature sensor at different temperature sensing locations, reducing costs.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a temperature-sensing fixing structure proposed in this utility model is shown;

[0025] Figure 2 A schematic diagram showing the cooperation between the electrode plate, the support, and the electrode post in this utility model is shown;

[0026] Figure 3 A schematic diagram of the temperature sensor in this utility model is shown;

[0027] Figure 4 A schematic diagram of the support structure in this utility model is shown;

[0028] Figure 5 A schematic diagram of a galaxy with the first hollow structure in this invention is shown;

[0029] Figure 6 This invention illustrates the cooperation between the bracket upper cover and the bracket.

[0030] Figure 7 A schematic diagram of the upper cover structure in this utility model is shown.

[0031] In the diagram, 1. Bracket; 101. First hollow structure; 102. Second hollow structure; 103. Bracket limiting boss; 104. Top cover positioning boss; 105. First main board; 106. Second main board; 1011. Buckle limiting groove; 2. Bracket top cover; 201. Buckle; 202. Top cover positioning groove; 203. Temperature sensing observation hole; 3. Temperature sensor; 301. Upper wall plate; 302. Flexible circuit board; 303. Lower wall plate; 304. Thermal conductive silicone pad; 4. Electrode; 401. Bracket limiting groove; 402. Electrode limiting fixing groove; 5. Battery cell; 51. Terminal post. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] This utility model proposes a temperature-sensing fixing structure, which adopts a trayless design to further reduce the module thickness.

[0034] like Figure 1 and Figure 2As shown, the temperature sensor 3 fixing structure includes a bracket 1, a bracket cover 2, a temperature sensor 3, an electrode 4, and a battery cell 5. The bracket 1 is fixed to the terminal post 51 of the battery cell 5. The bracket cover 2 is positioned above the bracket 1, forming a snap-lock structure with the bracket 1 to press the temperature sensor 3 firmly onto the battery cell 5. The electrode 4 is provided with an electrode limiting and fixing groove 402 and a bracket limiting groove 401. The electrode fixing groove 402 is used to fix the electrode 4 to the terminal post 51, and the bracket limiting groove 401 is used to position the bracket 1 using the electrode 4. For example, the bracket limiting groove 401 is a square groove that works in conjunction with the bracket 1 to prevent rotation.

[0035] like Figure 3 As shown, the temperature sensor 3 comprises an upper wall plate 301, a flexible circuit board 302, a lower wall plate 303, and a thermally conductive silicone pad 304 stacked sequentially. In an exemplary embodiment of this invention, the thermally conductive silicone pad 304 is made of a special rubber, adhered to the lower wall plate 303 with adhesive backing, and has good compressibility and thermal conductivity. Exemplarily, the upper wall plate 301 and lower wall plate 303 are made of ABS material, clamping and fixing the flexible circuit board 302, which contains a built-in thermistor. The thermally conductive silicone pad 304 is press-fitted to the shoulder of the battery cell 5 via the bracket cover 2, allowing the temperature sensor 3 to fit tightly against the shoulder of the battery cell 5, effectively collecting the temperature of the battery cell 5. In an exemplary embodiment of this invention, the upper wall plate 301, lower wall plate 303, and thermally conductive silicone pad 304 have the same length and width. In other embodiments, the size of the thermally conductive silicone pad 304 can be set smaller than that of the lower wall plate 303 for easier assembly.

[0036] like Figure 4 As shown, the bracket 1 is provided with a first hollow structure 101 for assembling the temperature sensor 3, a second hollow structure 102 for cooperating with the electrode post 51 of the battery cell 5, and a bracket limiting boss 103. The back of the bracket 1 is provided with reinforcing ribs to increase the strength of the bracket 1. Specifically, the first hollow structure 101 is disposed on the bracket 1, and the second hollow structure 102 is disposed on the side of the bracket 1 away from the first hollow structure 101, with the same cross-sectional shape as the electrode post 51, for fitting the bracket 1 onto the electrode post 51; the bracket limiting boss 103 is disposed between the second hollow structure 102 and the first hollow structure 101, for positioning and installing the bracket 1; a top cover positioning boss 104 is provided on the outer edge of the first hollow structure 101 near the bracket limiting boss 103, for cooperating with the bracket top cover 2 to position and install the bracket top cover 2.

[0037] like Figure 5 and Figure 6As shown, in an exemplary embodiment of the present invention, the first hollow structure is shaped like a square, and one or more can be provided. Each first hollow structure 101 is also provided with a buckle limiting groove 1011 on its inner sidewall, which forms a buckle interlocking structure with the buckle 201 of the bracket cover 2 to ensure a stable connection with the bracket cover 2.

[0038] In an exemplary embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the bracket 1 is a T-shaped plate, composed of a first main board 105 and a second main board 106 connected to the first main board 105, forming a T-shape. The first hollow structure 101 and the upper cover positioning boss 104 are disposed on the second main board 106, with the upper cover positioning boss 104 positioned close to the first main board 105. The second hollow structure 102 and the bracket limiting boss 103 are disposed on the first main board 105, with the bracket limiting boss 103 positioned close to the second main board 106 and the second hollow structure 102 positioned away from the second main board 106.

[0039] In an exemplary embodiment of this utility model, two first hollow structures 101 are provided, which are composed of rectangular frames and form an interference fit with the temperature sensor 3. The upper wall plate 301, the lower wall plate 303 and the thermal conductive silicone pad 304 of the temperature sensor 3 are installed in the first hollow structure 101 to limit the X and Y directions of the temperature sensor 3.

[0040] In an exemplary embodiment of this utility model, the reinforcing ribs are a cross-mesh structure, which can further enhance the bending strength of the support 1.

[0041] In an exemplary embodiment of this utility model, the second hollow structure 102 is a contoured structure of the electrode post 51, and its opening diameter matches the electrode post 51 of the battery cell 5, which can be slightly larger than the outer diameter of the electrode post 51. Since the electrode post 51 is circular in shape, a contoured structure cannot completely limit the X and Y directions. Therefore, a bracket limiting groove 401 opened on the electrode plate 4 is used to prevent rotation. The electrode post 51 and the bracket limiting groove 401 limit the bracket 1 in the X and Y directions. The bracket 1 is located below the electrode plate 4, and the bracket 1 is limited in the Z direction by welding the electrode plate 4.

[0042] like Figure 7 As shown, the bracket cover 2 includes a buckle 201 and a cover positioning groove 202. The buckle 201 is disposed on the back of the bracket cover 2 and interlocks with the buckle limiting groove 1011 in the first hollow structure 101. The cover positioning groove 202 is opened on the bracket cover 2 at the position other than the buckle 201 and matches the cover positioning boss 104.

[0043] In an exemplary embodiment of this utility model, the bracket 1 and the bracket cover 2 are made of PC+ABS material.

[0044] In an exemplary embodiment of this utility model, the buckle 201 is an elastic barb structure that snaps into the buckle limiting groove 1011 of the first hollow structure 101.

[0045] In an exemplary embodiment of this utility model, the upper cover positioning boss 104 is a cylindrical boss that is interference-fitted with the upper cover positioning groove 202 of the bracket upper cover 2.

[0046] In an exemplary embodiment of this utility model, the upper cover 2 of the bracket is further provided with a temperature sensing observation hole 203, which can be specifically set in the temperature measuring point area of ​​the flexible circuit board 302. The temperature sensing observation hole 203 can be any shape, such as a circle, a rectangle, etc.

[0047] The assembly principle of this utility model:

[0048] A bracket limiting groove 401 is machined on the electrode 4; the second hollow structure 102 of the bracket 1 is aligned with the terminal post 51 of the cell 5, and pressed vertically down until the bracket limiting boss 103 is inserted into the bracket limiting groove 401 of the electrode 4, and the electrode 4 is welded to the terminal post 51 of the cell 5. At this time, the bracket 1 is completely restricted in the X / Y / Z directions. Then, the thermally conductive silicone pad 304 is attached to the surface of the cell 5, and the lower wall plate, flexible circuit board 302, and upper wall plate are stacked in sequence, and the whole assembly is inserted into the first hollow structure 101 of the bracket 1, ensuring that there is no looseness. Then, the upper cover positioning groove 202 is aligned with the upper cover positioning boss 104 (e.g., Figure 7 As shown), press the buckle 201 until the buckle 201 engages with the buckle limiting groove 1011. At this time, the thermal conductive silicone pad 304 is compressed, thus fixing the temperature sensor 3.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temperature-sensing fixing structure, characterized in that, include: The bracket (1) is fixed on the terminal post (51) of the battery cell (5); The bracket cover (2) is set above the bracket (1) and forms a snap-lock structure with the bracket (1) to press the temperature sensor (3) onto the battery cell (5).

2. The temperature-sensing fixing structure according to claim 1, characterized in that, The support (1) includes: The first hollow structure (101) is set on the bracket (1) and is used to assemble the temperature sensor (3); a buckle limiting groove (1011) is opened on the inner side wall of the first hollow structure (101); The second hollow structure (102) is set on the side of the bracket (1) away from the first hollow structure (101) and is adapted to the pole post (51) for fitting the temperature sensor (3) onto the pole post (51); A bracket limiting boss (103) is disposed between the second hollow structure (102) and the first hollow structure (101); The upper cover positioning boss (104) is located at the edge of the first hollow structure (101) and close to the bracket limiting boss (103).

3. The temperature-sensing fixing structure according to claim 1 or 2, characterized in that, The back of the bracket (1) is provided with reinforcing ribs.

4. The temperature-sensing fixing structure according to claim 2, characterized in that, The bracket cover (2) includes: The buckle (201) is set on the back of the bracket cover (2) and interlocks with the buckle limiting groove (1011); The upper cover positioning groove (202) is formed on the upper cover (2) of the bracket and matches the upper cover positioning boss (104).

5. The temperature-sensing fixing structure according to claim 1, characterized in that, The temperature sensor (3) includes an upper wall panel (301), a flexible circuit board (302), a lower wall panel (303), and a thermally conductive silicone pad (304) stacked in sequence.

6. The temperature-sensing fixing structure according to claim 5, characterized in that, The bracket cover (2) also includes: A temperature-sensing observation hole (203) is provided in the temperature measurement point area of ​​the flexible circuit board (302).

7. The temperature-sensing fixing structure according to claim 4, characterized in that, The buckle interlocking structure consists of the buckle limiting groove (1011) and the buckle (201).

8. The temperature-sensing fixing structure according to claim 2, characterized in that, The temperature sensing (3) fixing structure also includes an electrode (4), on which a bracket limiting groove (401) is provided, which cooperates with the bracket limiting boss (103).

9. The temperature-sensing fixing structure according to claim 2, characterized in that, The second hollow structure (102) is adapted to the cross-sectional shape of the pole post (51).

10. The temperature-sensing fixing structure according to claim 1, characterized in that, Both the bracket (1) and the bracket cover (2) are made of plastic.

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