Lithium battery mounting and fixing structure

Abstract

The utility model relates to the technical field of battery fixing structures, in particular to a lithium battery installing and fixing structure which comprises an installing base, a plurality of installing grooves used for placing lithium batteries are evenly formed in the upper side of the installing base, thin films are arranged at the bottoms of the installing grooves, and metal sheets electrically connected with negative electrodes of the lithium batteries are arranged on the top faces of the thin films. A cavity is formed in the mounting base; the fixing piece is fixedly connected to the outer wall of the periphery of the mounting base in a wrapping manner; the protection bag is arranged on the outer wall of the inner side of the arc-shaped part, and a cavity is formed in the protection bag; and the cover body is detachably connected to the top surface of the fixing piece. The arranged fixing piece is matched with the mounting base, so that on one hand, the lithium battery can be effectively fixed; meanwhile, the characteristic that the temperature of the lithium battery rises in the using process is utilized, the communication relation between the cavity and the cavity is matched, the heat dissipation efficiency of the lithium battery can be adjusted in a self-adaptive mode, power is cut off, and the using safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery fixing structure technical field, concretely relates to a lithium battery mounting fixed structure. BACKGROUND

[0002] With the rapid development of energy storage technology and electric vehicle technology, lithium battery becomes the common choice of energy storage power supply because of high safety, long service life and low cost, and the number of lithium batteries will be different for different use scenarios, for the scene of more lithium batteries in series, fixed structure is needed to fix the arranged multiple lithium batteries;

[0003] The existing lithium battery fixing structure usually considers the fixing effect, but in the use link of lithium battery, the temperature of lithium battery will rise, the fixing plate in the fixing structure usually keeps close to the outer wall of lithium battery, although the fixing effect is guaranteed, but it is not conducive to heat dissipation, in view of this, we provide a lithium battery mounting fixed structure. UTILITY MODEL CONTENTS

[0004] In view of the above shortcomings of the prior art, the utility model provides a lithium battery mounting fixed structure, which can effectively solve the problem that the existing lithium battery fixing structure usually considers the fixing effect, but in the use link of lithium battery, the temperature of lithium battery will rise, the fixing plate in the fixing structure usually keeps close to the outer wall of lithium battery, although the fixing effect is guaranteed, but it is not conducive to heat dissipation.

[0005] To achieve the above purpose, the utility model realizes by the following technical scheme:

[0006] The utility model provides a lithium battery mounting fixed structure, including installation base, the upper side is evenly provided with a plurality of installation groove for placing lithium battery, the bottom of installation groove is provided with film, the top surface of film is provided with metal sheet that keeps electric connection with negative electrode of lithium battery, the inside of installation base is provided with chamber;

[0007] And, the fixed part that is wrapped around and is fixedly connected on the outer wall of installation base around, the fixed part includes the bending part that keeps fixed connection with installation base, and the arc portion that is fixedly installed on the upper side position of bending part;

[0008] And, the protection bag that sets up on the inner side outer wall of arc portion, the cavity is opened in the inside of protection bag, the gas that meets the heat expansion is stored in the cavity, a plurality of through holes are evenly and opened in the upper protection bag, a plurality of heat dissipation holes that keep communication with through hole are opened on the outer wall of arc portion, the cavity keeps communication with chamber through the communication hole that is opened in the bending part;

[0009] Further, the bottom surface of the cover body is provided with a plurality of positioning holes corresponding to the positive electrode of the lithium battery, the positioning holes are arranged in an inclined structure, the metal ring can connect the positive electrodes of the lithium battery in series, the metal contact on the outer wall of the metal ring is aligned with the center of the positioning hole, when the lithium battery moves upward, the positive electrode of the lithium battery is separated from the metal contact to disconnect the electrical connection, and the cover body is driven to move upward.

[0010] Further, the bottom surface of the cover body is provided with a plurality of positioning holes corresponding to the positive electrode of the lithium battery, the positioning holes are arranged in an inclined structure, the metal ring can connect the positive electrodes of the lithium battery in series, the metal contact on the outer wall of the metal ring is aligned with the center of the positioning hole, when the lithium battery moves upward, the positive electrode of the lithium battery is separated from the metal contact to disconnect the electrical connection, and the cover body is driven to move upward.

[0011] Further, the bottom surface of the cover body is provided with a plurality of positioning holes corresponding to the positive electrode of the lithium battery, the positioning holes are arranged in an inclined structure, the metal ring can connect the positive electrodes of the lithium battery in series, the metal contact on the outer wall of the metal ring is aligned with the center of the positioning hole, when the lithium battery moves upward, the positive electrode of the lithium battery is separated from the metal contact to disconnect the electrical connection, and the cover body is driven to move upward.

[0012] Further, the bottom surface of the cover body is provided with a plurality of positioning holes corresponding to the positive electrode of the lithium battery, the positioning holes are arranged in an inclined structure, the metal ring can connect the positive electrodes of the lithium battery in series, the metal contact on the outer wall of the metal ring is aligned with the center of the positioning hole, when the lithium battery moves upward, the positive electrode of the lithium battery is separated from the metal contact to disconnect the electrical connection, and the cover body is driven to move upward.

[0013] Further, the bottom surface of the cover body is provided with a plurality of positioning holes corresponding to the positive electrode of the lithium battery, the positioning holes are arranged in an inclined structure, the metal ring can connect the positive electrodes of the lithium battery in series, the metal contact on the outer wall of the metal ring is aligned with the center of the positioning hole, when the lithium battery moves upward, the positive electrode of the lithium battery is separated from the metal contact to disconnect the electrical connection, and the cover body is driven to move upward.

[0014] The technical scheme provided by the utility model has the following beneficial effects compared with the prior art:

[0015] The utility model discloses a fixing part cooperation installation base can realize the effective fixation to lithium battery on one hand, and can adaptively adjust the heat dissipation efficiency of lithium battery and cut off the power supply by the communication between the chamber and the cavity according to the temperature rising characteristics of lithium battery in use, thereby improving the use safety. ACCURACY

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0017] Figure 1 It is the fixed structure schematic diagram of the utility model;

[0018] Figure 2 It is the cover body and fixed piece separation structure schematic diagram of the utility model;

[0019] Figure 3 It is the overhead structure schematic view of the mounting base of the utility model;

[0020] Figure 4 It is the section structure schematic view of the mounting base of the utility model;

[0021] Figure 5 It is the section structure schematic view of the cylindrical piece of the utility model;

[0022] Figure 6 It is the structure schematic view of the fixing piece of the utility model;

[0023] Figure 7 It is the section structure schematic view of the fixing piece of the utility model.

[0024] The reference numerals in the drawing respectively represent:

[0025] 1, mounting base; 101, mounting groove; 11, film; 111, sleeve piece; 112, first round hole; 12, cylindrical piece; 121, second round hole; 122, recess; 123, storage cavity; 124, separation film; 13, chamber;

[0026] 2, fixing piece; 21, bending part; 211, communication hole; 22, arc part; 221, heat dissipation hole; 23, protection bag; 231, through hole; 232, protrusion; 233, cavity;

[0027] 3, cover; 31, metal ring; 32, positioning hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] The utility model will be further described below in combination with the embodiments.

[0030] Embodiment: refer to the drawings Figures 1-7As shown in the middle, a lithium battery mounting and fixing structure, comprising a mounting base 1, a plurality of mounting grooves 101 for placing lithium batteries are uniformly arranged on the upper side of the mounting base 1, a film 11 is arranged at the bottom of the mounting groove 101, a metal sheet is arranged on the top surface of the film 11 and is electrically connected with the negative electrode of the lithium battery, a fixing member 2 is fixedly connected to the outer wall around the mounting base 1 in a wrapping manner, a cover 3 is detachably connected to the top surface of the fixing member 2, a metal ring 31 is arranged inside the cover 3 and is electrically connected with the positive electrode of the lithium battery. Specifically, the lithium battery mounting and fixing structure mentioned in the present application protects the lithium battery in a wrapping manner, specifically, it comprises the mounting base 1 at the bottom position and a plurality of fixing members 2 on the outer wall around the upper side, and the detachable cover 3 arranged at the upper position, which effectively protects the lithium battery and ensures the stability of the lithium battery during transportation or use.

[0031] Moreover, regarding the electrically connected part, the plurality of mounting grooves 101 arranged uniformly on the outer wall of the upper side of the mounting base 1 can facilitate the installation of the lithium battery, and further, after installation, the film 11 arranged at the bottom of the mounting groove 101 and the metal sheet arranged on the top surface can ensure that the metal sheet is stably electrically connected with the negative electrode of the lithium battery after the lithium battery is installed. Regarding the positive electrode connection of the lithium battery, when the cover 3 is clamped on the upper side of the plurality of fixing members 2, it can assist in fixing the plurality of fixing members 2, thereby enabling the plurality of fixing members 2 to fix the lithium battery, and the metal ring 31 arranged inside the cover 3 can stably electrically connect with the positive electrode of the lithium battery, and the metal joint exposed on the outer side of the cover 3 can stably electrically connect with the external electrical equipment.

[0032] Further, in order to ensure the stable support and protection of the lithium battery, in the present application, the fixing member 2 comprises a bending part 21 fixedly connected with the mounting base 1 and an arc-shaped part 22 fixedly installed on the upper side of the bending part 21. The bending part 21 can be stably fixedly connected with the mounting base 1, and the arc-shaped part 22 fixedly connected on the upper side of the bending part 21 can exert a plastic deformation force on the outer wall of the lithium battery to fix the plurality of lithium batteries arranged uniformly on the mounting base 1. As an embodiment, in order to improve the protection effect of the lithium battery pack, in the present application, the arc-shaped part 22 of the fixing member 2 will displace during installation, and this displacement can exert a stable pressure on the lithium battery after installation, thereby ensuring the stability of the lithium battery during transportation or use.

[0033] In particular, the above-mentioned, in order to ensure the fixed effect of the fixing part 2 to the lithium battery, the lithium battery will force the arc-shaped part 22 to displace during installation to seek effective fixation of the lithium battery after installation, but in this process, the outer wall of the lithium battery will generate a certain friction with the outer wall of the arc-shaped part 22 in the fixing part 2, therefore, in order to reduce the damage in the installation process of the lithium battery, the protective bag 23 is arranged on the inner side of the arc-shaped part 22, the cavity 233 is arranged in the protective bag 23, the gas that expands when heated is stored in the cavity 233, through the arrangement of the protective bag 23, the damage to the outer wall of the lithium battery during installation can be effectively reduced, and further, the cavity 233 arranged in the protective bag 23 can also play a certain buffering and protection role, thereby effectively protecting the lithium battery shell.

[0034] The above-mentioned, refers to the fixation of the lithium battery, but in the actual use process, the lithium battery will heat up, if not good heat dissipation, it will affect the performance of the lithium battery, therefore, in this application, about heat dissipation, a plurality of through holes 231 are uniformly and vertically arranged on the protective bag 23, a plurality of heat dissipation holes 221 are arranged on the outer wall of the arc-shaped part 22 and are in communication with the through holes 231, first, through the communication relationship between the through holes 231 and the heat dissipation holes 221, when the lithium battery is used, the heat generated by the lithium battery can be well discharged from the through holes 231 and the heat dissipation holes 221.

[0035] Specifically, the cavity 13 is arranged in the installation base 1; the cavity 233 is in communication with the cavity 13 through the communication hole 211 arranged in the bending part 21; the sleeve member 111 is fixedly connected to the bottom surface of the film 11, the first circular hole 112 is arranged on the outer wall of the sleeve member 111; the cylindrical member 12 is in sliding cooperation with the sleeve member 111 and is fixedly installed on the inner wall of the cavity 13, a plurality of second circular holes 121 are vertically arranged on the top surface of the cylindrical member 12, the recess 122 is arranged on the top surface of the cylindrical member 12, and the second circular holes 121 are uniformly distributed on the circumferential outer wall of the recess 122. It should be noted that during installation, when the lithium battery is not installed in the installation groove 101, the film 11 arranged correspondingly is in an upwardly curved state, at this time, the first circular hole 112 arranged on the outer wall of the sleeve member 111 is in communication with the second circular hole 121 arranged on the outer wall of the cylindrical member 12, when the lithium battery is installed, the film 11 is in a horizontal state, that is, as shown in the accompanying drawings, at this time, the first circular hole 112 is not in communication with the second circular hole 121, and the gas originally in the recess 122 enters the inner position of the protective bag 23 from the cavity 13, and the expansion of the protective bag 23 realizes the extrusion fixation of the lithium battery. Figure 4

[0036] ​In use, the bottom of the cylindrical member 12 is provided with a storage cavity 123, the storage cavity 123 is filled with a heat-expandable liquid, and the middle part of the groove 122 and the storage cavity 123 is separated by a separation film 124. When the temperature of the lithium battery rises, the gas in the protective bag 23 will expand and enter the cavity 13, and the thin film 11 will move upward, and the lithium battery will move upward. Further, in order to overcome the friction of the protective bag 23 to the lithium battery, in the present application, referring to the drawings shown in Figure 5 The heat-expandable liquid stored in the storage cavity 123 at the bottom of the cylindrical member 12 will also expand synchronously, and its expansion coefficient is higher than that of the gas medium stored in the protective bag 23. With the expansion of the liquid in the storage cavity 123, the corresponding separation film 124 will move upward, thereby increasing the gas pressure of the gas in the groove 122, and the thin film 11 will deform upward, and the lithium battery on the upper side of the thin film 11 will also move upward synchronously. During this process, as the space of the cavity 13 increases, the gas in the cavity 233 of the protective bag 23 will enter the cavity 13, and the contact force between the protective bag 23 and the lithium battery will decrease, thereby facilitating the upward movement of the lithium battery.

[0037] Further, in actual use, if the temperature of the battery continues to rise and exceeds the normal temperature range, in the present application, the positive electrode of the lithium battery can be actively disconnected from the metal ring 31 to ensure that the lithium battery is continuously powered in high temperature, thereby reducing the risk of fire. Therefore, in the present application, a plurality of positioning holes 32 are provided on the bottom surface of the cover 3 and correspond to the positive electrode of the lithium battery. The positioning holes 32 are arranged in an inclined structure, and the metal ring 31 can connect the positive electrodes of the lithium battery in the plurality of positioning holes 32 in series. The metal contact on the outer wall of the metal ring 31 is aligned with the center position of the positioning hole 32. When the lithium battery moves upward, the positive electrode of the lithium battery will be separated from the metal contact and disconnected, and the cover 3 will move upward. When the lithium battery moves upward, the positive electrode of the lithium battery will slide in the positioning hole 32, and the originally closely contacted lithium battery group will gradually move to a dispersed state. During this process, due to the increase of the gap in the lithium battery group, the air flow efficiency is higher, and the heat dissipation effect is more ideal.

[0038] In particular, since the positioning hole 32 is arranged in an inclined structure, when the lithium battery slides to a certain extent in the positioning hole 32, since the metal ring 31 is only at the bottom of the positioning hole 32, with the continuous sliding, the positive electrode of the lithium battery will be separated from the contact of the metal ring 31, realizing the operation of power-off, and guaranteeing the safety of the use of the lithium battery pack. In the present application, in order to ensure that the cover 3 can be well moved upward, the top surface of the protective bag 23 is fixedly provided with a protrusion 232, the protrusion 232 is lapped with the bottom surface outer wall of the cover 3, when the gas in the cavity 233 expands, the protrusion 232 generates a force with the cover 3, driving the cover 3 to move upward. When the gas in the protective bag 23 expands, the bottom of the protective bag 23 is provided with a material with good elasticity, which will move upward after the gas in the protective bag 23 expands, assisting the displacement of the lithium battery, so that the positive electrode of the lithium battery is separated from the electrical connection with the metal ring 31.

[0039] And with the upward movement of the lithium battery, the sleeve member 111 fixedly connected with the thin film 11 moves upward synchronously, the first circular hole 112 opened on the outer wall of the sleeve member 111 will be reconnected with the second circular hole 121, so that the high-pressure gas in the groove 122 enters the cavity 233 inside the protective bag 23, and the protrusion 232 further pushes out the cover 3 to disconnect the positive electrode of the lithium battery from the metal ring 31, guaranteeing the safety of use, and at the same time, each lithium battery in the lithium battery pack will also tend to be dispersed from the original contact state, improving the heat dissipation effect.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A lithium battery mounting and fixing structure characterized by comprising: The installation base (1) is uniformly provided with a plurality of installation grooves (101) for placing lithium batteries on the upper side, the bottom of the installation groove (101) is provided with a film (11), the top surface of the film (11) is provided with a metal sheet in electrical connection with the negative electrode of the lithium battery, and a cavity (13) is formed in the inside of the installation base (1); And the fixing piece (2) is fixedly connected to the outer wall of the installation base (1) in a wrapping shape, the fixing piece (2) comprises a bending part (21) fixedly connected with the installation base (1), and an arc-shaped part (22) fixedly installed on the upper side of the bending part (21); And the protective bag (23) is arranged on the inner side of the arc-shaped part (22), the protective bag (23) is internally provided with a cavity (233), the cavity (233) stores a heat-expanding gas, a plurality of through holes (231) are uniformly and penetratingly formed on the protective bag (23), a plurality of heat dissipation holes (221) are formed on the outer wall of the arc-shaped part (22) and are in communication with the through holes (231), and the cavity (233) is in communication with the cavity (13) through the communication hole (211) penetratingly formed in the bending part (21); And the cover (3) is detachably connected to the top surface of the fixing piece (2), and the cover (3) is internally provided with a metal ring (31) in electrical connection with the positive electrode of the lithium battery.

2. The lithium battery installation and fixing structure according to claim 1, wherein a sleeve piece (111) is fixedly connected to the bottom surface of the film (11), the outer wall of the sleeve piece (111) is provided with a first circular hole (112), and a cylindrical piece (12) is in sliding cooperation with the sleeve piece (111) and is fixedly installed on the inner wall of the cavity (13), and the upper portion of the cylindrical piece (12) is penetratingly provided with a plurality of second circular holes (121).

3. The lithium battery installation and fixing structure according to claim 2, wherein the top surface of the cylindrical piece (12) is provided with a groove (122), the second circular holes (121) are uniformly distributed on the circumferential outer wall of the groove (122), the bottom portion of the cylindrical piece (12) is provided with a storage cavity (123), the storage cavity (123) is filled with a heat-expanding liquid, and the middle portions of the groove (122) and the storage cavity (123) are separated by a separation film (124).

4. The lithium battery installation and fixing structure according to claim 1, wherein a plurality of positioning holes (32) are formed on the bottom surface of the cover (3) and correspond to the positive electrodes of the lithium batteries, the positioning holes (32) are arranged in an inclined structure, the metal ring (31) can connect the positive electrodes of the lithium batteries in the plurality of positioning holes (32) in series, the metal contact pieces on the outer wall of the metal ring (31) are aligned with the center positions of the positioning holes (32), when the lithium battery is moved upward, the positive electrode of the lithium battery is separated from the metal contact pieces and disconnected in electrical connection, and the cover (3) is driven to move upward.

5. The lithium battery installation and fixing structure according to claim 4, wherein ​ ​ ​ ​ ​ ​ The top surface of the protection bag (23) is fixedly provided with a protrusion (232), the protrusion (232) is overlapped with the bottom surface outer wall of the cover body (3), when the gas in the cavity (233) expands, the protrusion (232) generates a force with the cover body (3), and drives the cover body (3) to move upward.

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