Battery module

Abstract

The utility model provides a battery module, and relates to the technical field of new energy. The battery module provided by the utility model comprises a battery cell group, wherein the battery cell group comprises a plurality of battery cell monomers which are arranged in sequence; the busbar is arranged on the first side of the battery cell group and is electrically connected with the plurality of battery cell monomers; the integrated circuit board is arranged on the first side of the battery cell group and is electrically connected with the busbar; the temperature acquisition assembly is arranged on the integrated circuit board, the pressing and clamping piece comprises a main body part and a clamping part which are connected, the clamping part is clamped and fixed with the temperature acquisition assembly, and the main body part is pressed and clamped between the busbar and the battery cell monomers, so that the temperature acquisition assembly is close to the battery cell monomers to obtain the temperature information of the battery cell monomers. According to the battery module provided by the invention, the battery cell temperature acquisition stability is relatively high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to a battery module. BACKGROUND

[0002] With the rapid development of the new energy industry, the performance improvement of the battery module has attracted widespread attention, and in order to ensure the stable performance of the battery module, the temperature of the battery cell in the battery module needs to be monitored.

[0003] The accuracy of the battery cell temperature detection is crucial to the stable performance of the battery cell. In the related art, the temperature acquisition component directly contacts the top cover of the battery cell to obtain the temperature information of the battery cell. However, the temperature acquisition component cannot be effectively positioned in the related art, resulting in insufficient stability of the battery cell temperature acquisition. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery module, and the structure of the temperature acquisition component in the module has good stability, and the stability and accuracy of the battery cell temperature acquisition are high.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The present application provides a battery module, and the structure of the temperature acquisition component in the module has good stability, and the stability and accuracy of the battery cell temperature acquisition are high.

[0007] The battery cell group includes a plurality of battery cell monomers arranged in sequence.

[0008] The bus bar is arranged on the first side of the battery cell group and is electrically connected with the plurality of battery cell monomers.

[0009] The integrated circuit board is arranged on the first side of the battery cell group and is electrically connected with the bus bar.

[0010] The temperature acquisition assembly is arranged on the integrated circuit board, and the clamping piece includes a main body portion and a clamping portion connected with each other. The clamping portion is clamped and fixed with the temperature acquisition assembly, and the main body portion is clamped between the bus bar and the battery cell monomer, so that the temperature acquisition assembly is close to the battery cell monomer to obtain the temperature information of the battery cell monomer.

[0011] In a possible implementation manner, the temperature acquisition assembly includes a temperature acquisition component and a support connected with each other. The temperature acquisition component is connected with the integrated circuit board, and the support is located on the side away from the battery cell monomer. The support is clamped with the clamping portion of the clamping piece.

[0012] In a possible implementation manner, the clamping portion of the clamping piece includes at least one clamping hook. The clamping hook is fixed to the main body portion and extends away from the battery cell monomer. The clamping hook is clamped with the support.

[0013] In a possible implementation, the clamping hooks are two, and the two clamping hooks are arranged at intervals and are clamped with the support.

[0014] In a possible implementation, the clamping hooks are two groups, and the two groups of clamping hooks are arranged at intervals along the width direction of the clamping piece, and the number of clamping hooks in each group is two, and the two clamping hooks are arranged at intervals along the length direction of the clamping piece.

[0015] The support is provided with two first through holes, and the two groups of clamping hooks are respectively arranged through the two first through holes and clamped with the support.

[0016] In a possible implementation, the integrated circuit board comprises a board body and an extension part connected with each other, the extension part extends outward along the width direction of the board body, the temperature acquisition piece is connected to the extension part, the extension part is provided with two second through holes arranged at intervals, the second through holes are arranged correspondingly with the first through holes, and the clamping hooks are arranged through the second through holes and the first through holes in sequence and clamped with the support.

[0017] In a possible implementation, the clamping piece is provided with a limiting through hole, and the clamping piece is sleeved on the pole of the battery cell through the limiting through hole to limit the clamping piece along the thickness direction of the battery cell.

[0018] In a possible implementation, the heat conduction piece is arranged between the battery cell and the temperature acquisition piece.

[0019] In a possible implementation, the clamping piece is provided with a heat conduction cavity, the heat conduction piece is arranged in the heat conduction cavity, the heat conduction piece has opposite first and second heat conduction surfaces, and the first and second heat conduction surfaces are connected with the temperature acquisition piece and the battery cell respectively.

[0020] In a possible implementation, the heat conduction piece is a heat conduction pad, a heat conduction paste or a heat conduction glue.

[0021] The battery module provided in the embodiments has at least the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0023] Figure 1An overall structural schematic diagram of a battery module provided in an embodiment of the present application is shown in FIG. 1.

[0024] Figure 2 For the purpose of showing Figure 1 An overall structural schematic diagram of an integrated circuit board is shown in FIG. 2.

[0025] Figure 3 For the purpose of showing Figure 1 An overall structural schematic diagram of a temperature sensing assembly of the battery module is shown in FIG. 3.

[0026] Figure 4 For the purpose of showing Figure 3 An overall structural schematic diagram of a pressure plate is shown in FIG. 4.

[0027] Figure 5 For the purpose of showing Figure 1 An exploded view of the battery module is shown in FIG. 5.

[0028] Explanation of reference numerals:

[0029] 100, cell group

[0030] 110, cell monomer; 111, pole post

[0031] 200, bus bar

[0032] 300, integrated circuit board

[0033] 310, board body

[0034] 320, extension; 321, second via hole

[0035] 400, temperature collection assembly

[0036] 410, temperature collection piece

[0037] 420, support piece; 421, first via hole

[0038] 500, pressure clamping piece

[0039] 510, main body part

[0040] 520, clamping part; 521, clamping hook

[0041] 530, limiting through hole

[0042] 540, heat conduction cavity

[0043] 600, heat conduction piece

[0044] 610, first heat conduction surface

[0045] 620, second heat conduction surface

[0046] 700, voltage collection terminal

[0047] 800, connector.

[0048] The specific embodiments of the present application have been shown and described in the above-described drawings and text. These drawings and text are not intended to limit the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0049] As described in the background, with the rapid development of the new energy industry, the performance improvement of the battery module has attracted widespread attention, and in order to ensure the stable performance of the battery module, the temperature of the battery cell in the battery module needs to be monitored.

[0050] In the related art, the temperature information of the battery cell is obtained by directly contacting the temperature collection member with the top cover of the battery cell. However, the temperature collection member in the related art cannot be effectively positioned, resulting in insufficient stability of the battery cell temperature collection.

[0051] To solve the above technical problems, the embodiments of the present application provide a battery module, which fixes the temperature collection assembly arranged on the integrated circuit board through the clamping part of the pressing clamp, and uses the main body part of the pressing clamp pressed between the bus bar and the battery cell to press the temperature collection assembly, so that the temperature collection assembly is tightly attached to the battery cell, thereby more accurately obtaining the temperature information of the battery cell. That is, by strengthening the structural stability of the temperature collection assembly, the integrated circuit board can more stably collect the temperature of the battery cell, the structure manufacturing process is simple, and it is easy to apply.

[0052] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0053] In conjunction with Figures 1 to 5The battery module provided by the embodiment of the application comprises: a battery cell group 100 comprising a plurality of battery cell monomers 110 arranged in sequence; busbars 200 arranged on a first side of the battery cell group 100 and electrically connected with the plurality of battery cell monomers 110; an integrated circuit board 300 arranged on the first side of the battery cell group 100 and electrically connected with the busbars 200; a temperature acquisition assembly 400 and a pressing clamp 500, the temperature acquisition assembly 400 is arranged on the integrated circuit board 300, the pressing clamp 500 comprises a main body part 510 and a clamping part 520 connected with each other, the clamping part 520 is clamped and fixed with the temperature acquisition assembly 400, and the main body part 510 is pressed between the busbar 200 and the battery cell monomer 110, so that the temperature acquisition assembly 400 is close to the battery cell monomer 110 to obtain the temperature information of the battery cell monomer 110.

[0054] In this way, the temperature acquisition assembly 400 arranged on the integrated circuit board 300 is clamped and fixed by the clamping part 520 of the pressing clamp 500, and the main body part 510 of the pressing clamp 500 pressed between the busbar 200 and the battery cell monomer 110 is used to press the temperature acquisition assembly 400, so that the temperature acquisition assembly 400 is tightly attached to the battery cell monomer 110, thereby more accurately obtaining the temperature information of the battery cell monomer 110, that is, the temperature acquisition assembly 400 is more stably collected by the integrated circuit board 300 through the structural stability of the temperature acquisition assembly 400.

[0055] In a possible implementation, along the thickness direction of the busbar 200, there is a gap between the main body part 510 of the pressing clamp 500 and the busbar 200, so that the pressing clamp 500 can be moved and adjusted in the horizontal direction before the temperature acquisition assembly 400 is installed.

[0056] In some embodiments, the temperature acquisition assembly 400 comprises a temperature acquisition part 410 and a support part 420 connected with each other, the temperature acquisition part 410 is connected to the integrated circuit board 300, and the support part 420 is located on the side away from the battery cell monomer 110 and is clamped to the clamping part 520 of the pressing clamp 500, so that the support part 420 can be used as a structural reinforcement of the temperature acquisition part 410, thereby improving the structural stability of the temperature acquisition assembly 400. For example, the temperature acquisition part 410 is a temperature acquisition sheet, which is fixed to the integrated circuit board 300 by bonding or welding.

[0057] In the embodiment, the temperature acquisition part 410 can be connected to the support part 420 by bonding, which is simple and reliable in connection structure.

[0058] In some embodiments, the clamping part 520 of the pressing clamp 500 comprises at least one clamping hook 521, the clamping hook 521 is fixed to the main body part 510 and extends away from the battery cell monomer 110, and the clamping hook 521 is clamped to the support part 420.

[0059] In some embodiments, the clamping hooks 521 are two, which are arranged at intervals and are clamped with the support 420. Specifically, the two clamping hooks 521 are clamped at the two ends of the support 420 in the length direction, so as to improve the clamping stability.

[0060] In some embodiments, the clamping hooks 521 are two groups, which are arranged at intervals along the width direction of the clamping piece 500. Each group of clamping hooks 521 has two clamping hooks 521, which are arranged at intervals along the length direction of the clamping piece 500. The support 420 is provided with two first through holes 421, and the two groups of clamping hooks 521 are clamped with the support 420 through the two first through holes 421.

[0061] In more examples, the integrated circuit board 300 has a plurality of voltage collection terminals 700, which are distributed on the opposite sides along the width direction of the integrated circuit board 300. The plurality of voltage collection terminals 700 are arranged at intervals along the length direction of the integrated circuit board 300. The bus bar 200 has a plurality of bus sections, which are arranged at intervals along the length direction of the bus bar 200. The plurality of voltage collection terminals 700 are electrically connected to the plurality of bus sections one by one. The clamping piece 500 is at least one, which is clamped with the bus section. For example, the clamping piece 500 can also be two or three. The voltage collection terminal 700 is used to monitor the voltage information of each cell monomer 110 in the battery module in real time. The voltage information can be used to record and analyze the performance and health status of the battery module.

[0062] In some embodiments, the integrated circuit board 300 includes a board body 310 and an extension 320 connected to each other. The extension 320 extends outwardly along the width direction of the board body 310. The temperature collection piece 410 is connected to the extension 320. The extension 320 is provided with two second through holes 321 arranged at intervals. The second through holes 321 are arranged correspondingly to the first through holes 421. The clamping hooks 521 are clamped with the support 420 through the second through holes 321 and the first through holes 421 in sequence. Further, along the length direction of the integrated circuit board 300, the two sides of the extension 320 are connected to the voltage collection terminals 700. In this way, the structure strength of the board body region of the integrated circuit board 300 for arranging the temperature collection piece 410 is enhanced by widening the board body 310 of the integrated circuit board 300 and connecting the voltage collection terminals 700.

[0063] The arrangement of the support 420 and the first through holes 421 and the second through holes 321 on the integrated circuit board 300 improves the structural compactness between the clamping piece 500, the temperature collection assembly 400 and the circuit board.

[0064] In some embodiments, the pressure card 500 is provided with a limiting through hole 530, and the pressure card 500 is sleeved on the pole 111 of the battery cell 110 through the limiting through hole 530 to limit the pressure card 500 along the thickness direction of the battery cell 110, so as to further improve the structural stability of the pressure card 500, so as to better press the temperature collecting piece 410, and the temperature detection stability of the battery cell is higher.

[0065] Further, the limiting through hole 530 has a movement gap between the pole 111 along the circumferential direction of the limiting through hole 530, so as to accommodate the assembly error of other components, so as to ensure the relative alignment accuracy of the temperature collecting assembly 400 and the heat conducting piece 600.

[0066] In some examples, one end of the integrated circuit board 300 is provided with a connector along the length direction of the integrated circuit board 300, and the connector is configured to be connected with an external control device to exchange data. For example, the connector is connected in communication with a battery management system, so as to obtain the voltage, current and / or temperature information of the battery cell 110, and facilitate real-time monitoring and management of the battery module.

[0067] In some embodiments, the heat conducting piece 600 is further included, and the heat conducting piece 600 is arranged between the battery cell 110 and the temperature collecting piece 410. For example, the heat conducting piece 600 is in a block shape, and the heat conducting piece 600 is tightly attached to the battery cell 110. In this way, the heat conducting piece 600 is used to transfer the heat of the battery cell 110 to the temperature collecting piece 410, so as to guarantee the temperature detection efficiency and also play a role in protecting the structure of the battery cell.

[0068] In some embodiments, the pressure card 500 is provided with a heat conducting cavity 540, and the heat conducting piece 600 is arranged in the heat conducting cavity 540. The heat conducting piece 600 has opposite first and second heat conducting surfaces 610 and 620, and the first and second heat conducting surfaces 610 and 620 are connected with the temperature collecting piece 410 and the battery cell 110 respectively. For example, the first heat conducting surface 610 is bonded to the temperature collecting piece 410, and the second heat conducting surface 620 is in abutment with the battery cell 110. In this way, the arrangement of the heat conducting cavity 540 can not only position the installation position of the heat conducting piece 600, but also protect the stability of the shape and size of the heat conducting piece 600.

[0069] In some embodiments, the heat conducting piece 600 is a heat conducting pad, heat conducting paste or heat conducting glue. For example, the heat conducting pad is a flexible piece, and the material thereof is silica gel, graphite or polyimide. The heat conducting pad can be flexibly connected with the battery cell 110 and the temperature collecting piece 410 to play a role in structural buffering and heat conduction.

[0070] In more examples, the support piece 420 is further provided with an observation hole for observing the state of the heat conducting piece 600.

[0071] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0072] In addition, the terms "first", "second", are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0073] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0075] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0076] It should be noted that the use of "a" or "an" or "the" or similar referents in the specification are used inclusively and in the discretion of the inventor(s) to refer to both of or one of a possible set of alternatives and / or to refer to other possibilities commonly understood by one of ordinary skill in the art, which possibilities can be covered by the application. It is also noted that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Further, the use of "primed" or "unprimed" in the specification is used to refer to the same element unless the context clearly dictates otherwise.

[0077] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the present application; although the present application has been described in detail with reference to the above-mentioned embodiments, those ordinarily skilled in the art should understand: the technical solutions recorded in the above-mentioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery module, characterized by, The application relates to a battery pack. The battery pack comprises a battery cell group, a busbar, an integrated circuit board, a temperature acquisition component and a clamping piece. The battery cell group comprises a plurality of battery cell monomers arranged in sequence. The busbar is arranged on the first side of the battery cell group and is electrically connected with the plurality of battery cell monomers. The integrated circuit board is arranged on the first side of the battery cell group and is electrically connected with the busbar.

2. The battery module of claim 1, wherein, The clamping piece comprises a main body and a clamping part connected with each other.

3. The battery module of claim 2, wherein, The clamping part is clamped and fixed with the temperature acquisition component.

4. The battery module of claim 3, wherein, The main body is clamped between the busbar and the battery cell monomer.

5. The battery module of claim 3, wherein, The temperature acquisition component is close to the battery cell monomer to obtain temperature information of the battery cell monomer. The temperature acquisition component comprises a temperature acquisition part and a support part connected with each other.

6. The battery module of claim 5, wherein, The temperature acquisition part is connected with the integrated circuit board.

7. The battery module of any one of claims 1-6, wherein, The support part is located on the side away from the battery cell monomer.

8. The battery module of any one of claims 2-6, wherein, The support part is clamped on the clamping part of the clamping piece.

9. The battery module of claim 8, wherein, The clamping part of the clamping piece comprises at least one clamping hook.

10. The battery module of claim 8, wherein, The clamping hook is fixed on the main body and extends away from the battery cell monomer. The clamping hook is clamped with the support part. There are two clamping hooks. The two clamping hooks are arranged at intervals and are clamped with the support part. There are two groups of clamping hooks along the width direction of the clamping piece. Each group of clamping hooks comprises two clamping hooks. The two clamping hooks are arranged at intervals along the length direction of the clamping piece. The support part is provided with two first through holes. The two groups of clamping hooks are clamped with the support part through the two first through holes. The integrated circuit board comprises a board body and an extension part connected with each other. The extension part extends outward along the width direction of the board body. The temperature acquisition part is connected with the extension part. The extension part is provided with two second through holes arranged at intervals. The second through holes are arranged correspondingly with the first through holes. The clamping hooks are clamped with the support part through the second through holes and the first through holes in sequence. The clamping piece is provided with a limiting through hole. The clamping piece is sleeved on the pole of the battery cell monomer through the limiting through hole to limit the clamping piece along the thickness direction of the battery cell monomer. The battery pack further comprises a heat conduction piece. The heat conduction piece is arranged between the battery cell monomer and the temperature acquisition part. The clamping piece is provided with a heat conduction cavity. The heat conduction piece is arranged in the heat conduction cavity. The heat conduction piece has opposite first and second heat conduction surfaces. The first and second heat conduction surfaces are connected with the temperature acquisition part and the battery cell monomer respectively. The heat conduction piece is a heat conduction pad, heat conduction paste or heat conduction glue.

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