Secondary battery module and system

Abstract

The utility model discloses a secondary battery module and a system, the secondary battery module comprises a secondary battery pack and a shell main body, the secondary battery pack is arranged in the shell main body, the secondary battery pack is formed by connecting a plurality of battery monomers in series, and an anti-explosion valve is arranged at the top of each battery monomer; the shell body is composed of a first shell body and a second shell body. Convex strips are arranged on the inner wall of the first shell and the inner wall of the second shell, the convex strips are arranged between the shell main body and the battery monomers and are used for forming internal heat dissipation channels, and each module is provided with an independent heat dissipation channel and does not influence each other in a system; valve grooves are formed in the first shell and the second shell, are matched with anti-explosion valves of the battery monomers and are used for limiting the anti-explosion valves; the problems that an existing secondary battery module is poor in heat dissipation, single batteries are fixed unstably, an anti-explosion valve lacks effective limiting, and assembly and maintenance are inconvenient are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technical field, concretely relates to a secondary battery module, system. BACKGROUND

[0002] In the practical application of secondary battery module, the current technology has obvious defects in battery monomer heat dissipation, battery monomer stability and connection stability between shell main bodies.

[0003] In terms of heat dissipation, the battery monomers in the traditional secondary battery module are closely arranged, and the heat is difficult to dissipate. The common air cooling heat dissipation is limited by the limited air circulation inside the shell, and it is difficult to cope with the high heat generated by battery charging and discharging. When the battery working temperature continues to rise, the battery performance will decrease significantly, the charging and discharging efficiency will decrease, and the battery life will also be greatly shortened.

[0004] In terms of stability, the battery monomers lack sufficient fixing and buffering design in the shell main body. In the environment of vehicle driving bumping, industrial equipment vibration, etc., the battery monomers are prone to displacement and collision, the electrode connection may be damaged, and short circuit failure may be caused, which seriously threatens the safe operation of the battery module.

[0005] The connection stability between the shell main bodies is also not optimistic. Most modules adopt simple splicing or bolt connection mode. Under the influence of long-term vibration and temperature change, the connection is easy to loosen, resulting in poor sealing of the shell, and the external moisture and dust are easy to invade, corrode the internal elements, and affect the performance of the module. In large-scale application, unstable connection between modules will also greatly reduce the reliability of the whole system.

[0006] These problems seriously restrict the application of secondary battery module in many fields, and new technologies need to be developed to solve them. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a secondary battery module and system to solve the technical problems mentioned in the background.

[0008] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a secondary battery module, which comprises a secondary battery pack and a shell main body, the secondary battery pack is arranged in the shell main body, the secondary battery pack is composed of a plurality of battery monomers in series, and the top of the battery monomer is provided with an explosion-proof valve.

[0009] The shell main body is composed of a first shell and a second shell.

[0010] The inner wall of the first shell and the second shell is provided with a convex strip, the convex strip is arranged between the shell main body and the battery monomer, and is used for forming an internal heat dissipation channel. Each module has an independent heat dissipation channel and does not affect each other in the system.

[0011] The first shell and the second shell are provided with valve grooves, which are matched with the explosion-proof valves of the battery monomers and used for limiting the explosion-proof valves.

[0012] The above technical scheme has the following beneficial effects:

[0013] Efficient heat dissipation: The convex strips arranged on the inner walls of the first shell and the second shell ingeniously construct heat dissipation channels between the shell main body and the battery monomers. This design greatly optimizes the heat dissipation path, so that air can fully circulate between the battery monomers and the shell main body. When the battery monomers generate heat during charging and discharging, hot air can quickly be discharged through the heat dissipation channels, and cold air can be replenished in time, forming an efficient convection heat dissipation mechanism. Compared with the traditional heat dissipation method, the heat dissipation channel effectively improves the heat dissipation efficiency, ensures that the battery monomers are always within the appropriate working temperature range, thereby prolonging the service life of the battery and improving the charging and discharging performance and stability of the battery.

[0014] Stability and positioning: The convex strips not only serve for heat dissipation but also play an important role in the stability of the battery monomers. They closely adhere to the battery monomers, providing all-round support and positioning for the battery monomers, effectively preventing the battery monomers from shifting and shaking within the shell main body. When subjected to external forces such as vibration and impact, the convex strips can disperse stress, avoid the mutual collision of battery monomers, ensure the stability of electrode connection, reduce the probability of faults such as short circuit, and ensure the structural safety and reliable operation of the entire secondary battery module.

[0015] Precise limiting of explosion-proof valves: The valve grooves arranged in the first shell and the second shell are precisely matched with the explosion-proof valves at the top of the battery monomers. This matching design achieves effective limiting of the explosion-proof valves, ensuring that the explosion-proof valves remain stable in the normal working state. When the internal pressure of the battery abnormally rises and the explosion-proof valve is activated, the valve groove can guide the discharge direction of the gas, avoiding damage to the battery monomers caused by the impact when the explosion-proof valve is opened. At the same time, it also prevents the influence of high-pressure gas on other components inside the module, further improving the safety of the secondary battery module.

[0016] Convenient assembly and maintenance: The design of the shell main body composed of the first shell and the second shell makes the secondary battery module more convenient to assemble and maintain. The split structure facilitates the installation, repair and replacement of internal battery monomers and other components by workers, reducing maintenance cost and time, improving production and maintenance efficiency, and being conducive to the promotion and use of the secondary battery module in different application scenarios.

[0017] In the preferred scheme, the first shell and the second shell are provided with limiting blocks arranged at the bottom of the battery monomers.

[0018] The technical scheme has the beneficial effects that: the limiting block is arranged at the bottom of the battery monomer in the first shell and the second shell, so that the battery monomer can be stably supported, when the battery module is subjected to external force such as vibration, inclination or impact, the limiting block can effectively prevent the battery monomer from being displaced, shaken or dumped at the bottom position, so as to ensure the stability of the connection between the battery monomers, avoid the electrode connection from being loosened or broken due to the change of the position of the battery monomer, and further ensure that the entire secondary battery module can still be safely and reliably operated under complex working conditions, thereby prolonging the service life of the module.

[0019] Preferably, the top and the bottom of the shell body are provided with heat dissipation mesh holes.

[0020] The technical scheme has the beneficial effects that: the heat dissipation mesh holes are arranged at the top and the bottom of the shell body, so that the heat dissipation capacity of the entire secondary battery module is further improved, when the battery monomer generates heat during charging and discharging, hot air will naturally rise, and the heat dissipation mesh holes at the top can quickly discharge the hot air to the outside; at the same time, the heat dissipation mesh holes at the bottom can timely introduce cold air, so as to form a continuous heat exchange convection, which not only accelerates the heat dissipation speed, so that the battery module can always maintain at a suitable working temperature, reduces the negative impact of high temperature on the performance and service life of the battery, but also greatly improves the heat dissipation efficiency without affecting the stability of the overall structure, so as to ensure the stable operation of the secondary battery module.

[0021] Preferably, the first shell and the second shell are provided with a locking assembly, and the first shell is buckled with the second shell through the locking assembly.

[0022] The technical scheme has the beneficial effects that: the locking assembly arranged between the first shell and the second shell can significantly improve the connection stability of the shell body, the first shell and the second shell are tightly connected through the buckling of the locking assembly, so that the shell body can effectively resist external force such as vibration and impact, avoid the separation of the shell body due to external force, and ensure the reliable protection of the internal battery monomers and other components; at the same time, the locking assembly is easy to operate, the first shell and the second shell can be quickly buckled by the worker during assembly, so that the assembly efficiency is greatly improved; during maintenance or repair, the locking assembly can also be easily opened, so that the internal components can be easily operated, the maintenance cost and time cost are reduced, and the practicability and reliability of the entire secondary battery module are improved.

[0023] Preferably, the locking assembly is provided in plurality, and the locking assembly comprises a protrusion and a groove; the first shell and the second shell are buckled through the protrusion and the groove.

[0024] The technical scheme has the beneficial effects that: the lock catch assembly is arranged in a plurality of forms and is composed of protrusions and recesses, the first shell and the second shell are buckled by the protrusions and the recesses, which greatly improves the reliability of the connection of the shell body, the plurality of lock catch assemblies are uniformly distributed and can fasten the two shells in all directions, ensuring that the shell will not easily separate under various complex use environments, such as strong vibration and large amplitude shaking, effectively protecting the safety of the internal battery monomer and other components; moreover, the buckling mode of the protrusions and the recesses is simple and direct, and the workers only need to align the protrusions with the recesses and press down to complete the connection during assembly, which is very convenient to operate and can significantly improve the assembly efficiency; when maintenance is needed, the shell can be easily opened by reverse operation, which reduces the difficulty of maintenance, saves time and labor cost, and makes the daily use and maintenance of the secondary battery module more efficient.

[0025] In a preferred scheme, the outer diameter of the protrusion is slightly larger than the inner diameter of the recess; and the protrusion and the recess are connected in an interference fit.

[0026] The technical scheme has the beneficial effects that: by means of the protrusion having an outer diameter slightly larger than the inner diameter of the recess and the interference fit, the fastening effect of the lock catch assembly is greatly improved, the first shell and the second shell are tightly locked together by the strong friction force generated by the interference fit, compared with the ordinary buckling mode, the shell can withstand greater external force pulling, vibration and impact without loosening, which not only provides a more stable and reliable protection barrier for the internal battery monomer and other precise components, ensuring the safe operation of the module under complex working conditions; at the same time, the stable connection can also reduce the problem of reduced sealing caused by loosening of the shell, prevent impurities such as dust and moisture from entering, prolong the overall service life of the secondary battery module, and improve the quality and stability of the product.

[0027] In a preferred scheme, the first shell and the second shell can also be fixed by an adhesive.

[0028] The technical scheme has the beneficial effects that: the first shell and the second shell are fixed by an adhesive, which further forms a very tight and stable connection, the strong adhesive force of the adhesive makes the two shells seamlessly fit, greatly enhancing the integrity of the shell body, and more effectively resisting various external impacts and vibrations to provide more reliable protection for the internal battery monomer and other components.

[0029] In a preferred scheme, the top of the protruding strip is horizontal, and the two sides are arc-shaped.

[0030] The beneficial effects of the above technical solutions are: by designing the top of the convex strip as horizontal and the two sides as arc-shaped, the horizontal top can provide a stable support plane for the battery monomer, ensuring that the battery monomer is placed stably, effectively preventing displacement and shaking of the battery monomer when subjected to vibration or impact, and ensuring the stability of the connection between the battery monomers; the arc-shaped design of the two sides reduces the stress concentration point, protects the battery monomer, and reduces the risk of wear on the surface of the battery; in addition, the arc shape also optimizes the air flow in the heat dissipation channel, reduces air resistance, enhances the convective heat dissipation effect, and enables heat to be dissipated more efficiently.

[0031] In a preferred scheme, the number of the convex strips is multiple, and the convex strips are arranged uniformly in the vertical direction.

[0032] The beneficial effects of the above technical solutions are: by arranging multiple convex strips and uniformly arranging the convex strips in the vertical direction, the multiple convex strips increase the contact area with the battery monomer, provide more comprehensive support for the battery, effectively reduce the displacement risk of the battery monomer under vibration and impact, and improve the stability thereof; the uniform vertical distribution makes the heat dissipation channel more regular, the hot air flows more orderly during the rising process, and cold air is also uniformly supplemented, greatly enhancing the convective heat dissipation effect, enabling heat to be dissipated quickly during the charging and discharging process of the battery module, maintaining a suitable working temperature, thereby ensuring stable battery performance and prolonging the service life of the battery.

[0033] In a preferred scheme, the first shell and the second shell are made by an integral molding process.

[0034] The beneficial effects of the above technical solutions are: by making the first shell and the second shell by an integral molding process, the structural strength of the shell body is greatly improved; at the same time, this process reduces the assembly process, improves production efficiency, reduces labor costs, and improves the overall competitiveness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below 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.

[0036] Figure 1 A battery monomer and a first shell assembly schematic diagram provided by the present application;

[0037] Figure 2 A second shell overall structure schematic diagram provided by the present application;

[0038] Figure 3 A first shell perspective view is provided for the utility model;

[0039] Figure 4 A second shell perspective view is provided for the utility model;

[0040] Figure 5 A battery monomer and shell main body assembly side view schematic diagram is provided for the utility model;

[0041] Figure 6 A secondary battery assembly assembly perspective schematic diagram is provided for the utility model;

[0042] Figure 7 It is a schematic diagram of a secondary battery system;

[0043] Figure 8 It is a heat dissipation exhaust system schematic diagram of a secondary battery system;

[0044] Mark explanation;

[0045] 1-secondary battery pack;11-battery monomer;111-explosion-proof valve;2-shell main body;21-first shell;211-convex strip;22-second shell;23-valve groove;231-limiting plate;24-limiting block;25-radiating mesh;3-lock assembly;31-boss;32-groove;4-temperature sensor;5-first clamping plate;6-second clamping plate;7-copper bar;8-fixing screw;9-radiating fan;10-radiating cavity. DETAILED DESCRIPTION

[0046] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0047] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as limiting the utility model.

[0048] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0049] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise specifically defined 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 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.

[0051] Embodiment 1

[0052] As shown in Figures 1 to 6 A secondary battery module, comprising a secondary battery pack 1 and a shell body 2, the secondary battery pack 1 is arranged in the shell body 2, the secondary battery pack 1 is composed of a plurality of battery monomers 11 in series, and the top of the battery monomer 11 is provided with an explosion-proof valve 111.

[0053] The shell body 2 is composed of a first shell 21 and a second shell 22.

[0054] The inner wall of the first shell 21 and the second shell 22 is provided with a convex strip 211, which is arranged between the shell body 2 and the battery monomer 11, and is used for forming an internal heat dissipation channel. Each module has an independent heat dissipation channel and does not affect each other in the system.

[0055] The first shell 21 and the second shell 22 are provided with a valve groove 23, which is matched with the explosion-proof valve 111 of the battery monomer 11. Specifically, the valve groove 23 is symmetrically arranged on the limiting plate 231 in the shell, and is used for limiting the explosion-proof valve 111.

[0056] In terms of heat dissipation, the convex strips 211 of the inner walls of the first shell 21 and the second shell 22 form heat dissipation channels, accelerate the circulation of air between the battery monomers 11 and the shell, realize efficient convection heat dissipation, ensure that the battery monomers 11 work at an appropriate temperature, prolong the service life of the battery and improve the performance; in terms of stability, the convex strips 211 closely fit the battery monomers 11, support and position them in all directions, effectively disperse the stress generated by vibration and impact, avoid displacement and collision of the battery monomers 11, ensure stable electrode connection, and reduce the risk of short circuit failure; and the valve groove 23 is accurately matched with the explosion-proof valve 111, which not only can stabilize the explosion-proof valve 111 in normal state, but also can guide the direction of the gas discharged by the explosion-proof valve 111 when the internal pressure of the battery abnormally rises, prevent the battery monomers 11 from being damaged and the high-pressure gas from affecting other components, and greatly improve the safety of the module.

[0057] In this embodiment, the first shell 21 and the second shell 22 are each provided with a limiting block 24 arranged at the bottom of the battery monomers 11; by arranging the limiting block 24 at the bottom of the battery monomers 11 in the first shell 21 and the second shell 22, the stable support of the battery monomers 11 can be ensured, when the battery module is subjected to external forces such as vibration, inclination or impact, the limiting block 24 can effectively prevent the displacement, shaking or toppling of the battery monomers 11 at the bottom position, ensure the stability of the connection between the battery monomers 11, avoid the loosening and breaking of the electrode connection due to the change of the position of the battery monomers 11, and further ensure that the entire secondary battery module can still operate safely and reliably under complex working conditions, prolonging the service life of the module.

[0058] In this embodiment, the top and bottom of the shell body 2 are each provided with a heat dissipation mesh 25; by arranging the heat dissipation mesh 25 at the top and bottom of the shell body 2, the heat dissipation capacity of the entire secondary battery module is further improved, when the battery monomers 11 generate heat during charging and discharging, hot air will naturally rise, and the heat dissipation mesh 25 at the top can quickly exhaust the hot air to the outside; at the same time, the heat dissipation mesh 25 at the bottom can timely introduce cold air, forming a continuous heat exchange convection, which not only accelerates the heat dissipation speed, keeps the battery module at an appropriate working temperature at all times, reduces the negative impact of high temperature on the performance and service life of the battery, but also greatly improves the heat dissipation efficiency without affecting the stability of the overall structure, ensuring the stable operation of the secondary battery module.

[0059] In this embodiment, the first shell 21 and the second shell 22 are provided with a locking assembly 3, and the first shell 21 is buckled with the second shell 22 through the locking assembly 3. By arranging the locking assembly 3 between the first shell 21 and the second shell 22, the connection stability of the shell body 2 is significantly enhanced. Through the buckling of the locking assembly 3, the first shell 21 and the second shell 22 are tightly connected, which can effectively resist external forces such as vibration and impact, avoid the separation of the shell body 2 caused by external force, and ensure the reliable protection of the internal battery monomer 11 and other components. At the same time, the locking assembly 3 is easy to operate. When assembling, the staff can quickly buckle the first shell 21 and the second shell 22, greatly improving the assembly efficiency. When maintaining or repairing, it can also be easily opened, facilitating the operation of the internal components, reducing the maintenance cost and time cost, and improving the practicability and reliability of the secondary battery module as a whole.

[0060] In this embodiment, the locking assembly 3 is provided in several, and the locking assembly 3 includes a protrusion 31 and a groove 32. The first shell 21 and the second shell 22 are buckled through the protrusion 31 and the groove 32. By arranging the locking assembly 3 in several and composed of the protrusion 31 and the groove 32, the first shell 21 and the second shell 22 are buckled through the protrusion 31 and the groove 32, which greatly improves the reliability of the connection of the shell body 2. The plurality of locking assemblies 3 are evenly distributed and can fasten the two shells in all directions to ensure that the shell will not easily separate under various complex use environments, such as strong vibration and large amplitude shaking, effectively protecting the safety of the internal battery monomer 11 and other components. Moreover, the buckling mode of the protrusion 31 and the groove 32 is simple and direct. When assembling, the staff only needs to align the protrusion 31 with the groove 32 and press down to complete the connection, which is very convenient to operate and can significantly improve the assembly efficiency. When maintenance is needed, reverse operation can easily open it, reducing the maintenance difficulty, saving time and labor cost, and making the daily use and maintenance of the secondary battery module more efficient.

[0061] In this embodiment, the outer diameter of the protrusion 31 is slightly larger than the inner diameter of the groove 32. The protrusion 31 and the groove 32 are connected in interference. By arranging the protrusion 31 with an outer diameter slightly larger than the inner diameter of the groove 32, the two are connected in interference. This design greatly enhances the fastening effect of the locking assembly 3. With the strong friction force generated by the interference fit, the first shell 21 and the second shell 22 are tightly locked together. Compared with the ordinary buckling mode, it can withstand greater external force pulling, vibration and impact without loosening. This not only provides a more stable and reliable protection barrier for the internal battery monomer and other precision components, ensuring the safe operation of the module under complex working conditions; at the same time, stable connection can also reduce the problem of reduced sealing caused by shell loosening, prevent impurities such as dust and moisture from entering, prolong the overall service life of the secondary battery module, and improve the quality and stability of the product.

[0062] In this embodiment, the first shell 21 and the second shell 22 can also be fixed by an adhesive; the first shell 21 and the second shell 22 are fixed by an adhesive, further forming a very close and stable connection, and the strong adhesion of the adhesive enables the seamless fit of the two shells, greatly enhancing the integrity of the shell body 2, and more effectively resisting various external force impacts and vibrations, providing more reliable protection for the internal battery monomers 11 and other components.

[0063] In this embodiment, the top of the convex strip 211 is horizontal, and the two sides are arc-shaped; by designing the top of the convex strip 211 to be horizontal and the two sides to be arc-shaped, the horizontal top can provide a stable support plane for the battery monomers 11, ensuring that the battery monomers 11 are placed stably, effectively preventing displacement and shaking when subjected to vibration or impact, and ensuring the stability of the connection between the battery monomers 11; the arc-shaped design of the two sides reduces stress concentration points, protecting the battery monomers 11 while reducing the risk of wear on the battery surface; in addition, the arc shape also optimizes air flow in the heat dissipation channel, reduces air resistance, enhances convective heat dissipation effect, and enables heat to be dissipated more efficiently.

[0064] In this embodiment, the number of convex strips 211 is multiple, and they are arranged uniformly in the vertical direction; by arranging multiple convex strips 211 uniformly in the vertical direction, the contact area between the convex strips 211 and the battery monomers 11 is increased, providing more comprehensive support for the battery and effectively reducing the displacement risk of the battery monomers 11 under vibration and impact, improving their stability; uniform vertical distribution makes the heat dissipation channel more regular, enabling hot air to flow more orderly during its upward movement, and cold air to be uniformly supplemented, greatly enhancing the convective heat dissipation effect, allowing heat to be quickly dissipated during the charging and discharging process of the battery module, maintaining an appropriate working temperature, thereby ensuring stable battery performance and prolonging battery life.

[0065] In this embodiment, the first shell 21 and the second shell 22 are made by an integral molding process; by making the first shell 21 and the second shell 22 by an integral molding process, the structural strength of the shell body 2 is greatly improved; at the same time, this process reduces the assembly process, improves production efficiency, reduces labor costs, and improves the overall competitiveness of the product.

[0066] In this embodiment, the shell body 2 is provided with a high-temperature sensor 4 at the top, and one end of the high-temperature sensor 4 extends into the shell and contacts the battery monomers 11; by arranging the high-temperature sensor 4 at the top of the shell body 2, one end of which extends into the shell and contacts the battery monomers 11, effective monitoring of the temperature of the battery monomers 11 can be achieved, so as to timely grasp the battery temperature state and provide data support for ensuring the safe and stable operation of the battery.

[0067] In this embodiment, the protrusion 31 is provided on the first housing 21 or the second housing 22, and the corresponding groove 32 is provided on the second housing 22 or the first housing 21. The first housing 21 and the second housing 22 are engaged by the protrusion 31 and the groove 32. This part is conventional technology in the art and will not be described in detail.

[0068] Example 2

[0069] like Figure 7 As shown, a secondary battery system is formed by connecting multiple secondary battery modules in series or in parallel;

[0070] Specifically, multiple secondary battery packs are connected in series or in parallel via copper busbars 7 to form a secondary battery system;

[0071] Specifically, multiple secondary battery packs are clamped and fixed together by the first clamping plate 5 and the second clamping plate 6;

[0072] Specifically, the first clamping plate 5 and the second clamping plate 6 are fixed by fixing screws 8. This part is conventional technology in the field and will not be described in detail.

[0073] Example 3

[0074] like Figure 8 As shown, the secondary battery system also includes a temperature control device used to regulate the temperature of the battery system in Example 2. The temperature control device includes a heat exchanger.

[0075] The heat exchanger includes a cooling fan 9 and a cooling cavity 10; the cooling fan 9 and the cooling cavity 10 are configured as two sets, and are respectively located at the top and bottom of the secondary battery system;

[0076] Specifically, the top heat dissipation cavity 10 is connected to the heat dissipation mesh 25 on the top of the outer shell body 2, and the corresponding air inlet of the heat dissipation fan 9 is set to correspond to the heat dissipation cavity 10 for heat dissipation and exhaust.

[0077] Specifically, the bottom heat dissipation cavity 10 is connected to the bottom heat dissipation mesh 25 of the outer shell body 2, and the corresponding air outlet of the heat dissipation fan 9 is set to the heat dissipation cavity 10 for heat dissipation and air supply.

[0078] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0079] The principle and implementation mode of the present application are described by using specific examples herein, and the above examples are only used for helping to understand the method and core idea of the present application.

[0080] The above is only the preferred embodiment of the present application, and it should be pointed out that due to the limited expression of the text, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principle of the present application, and the above technical features can also be combined in a proper way; the improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection of the present application.

Claims

1. A secondary battery module, comprising a secondary battery pack (1) and a shell body (2), the secondary battery pack (1) being arranged in the shell body (2), the secondary battery pack (1) being composed of a plurality of battery monomers (11) in series, the battery monomer (11) being provided with an explosion-proof valve (111) at the top, characterized in that: the shell body (2) is composed of a first shell (21) and a second shell (22); the inner walls of the first shell (21) and the second shell (22) are each provided with a convex strip (211), the convex strip (211) being arranged between the shell body (2) and the battery monomer (11) to form an internal heat dissipation channel; the first shell (21) and the second shell (22) are each provided with a valve groove (23), the valve groove (23) being matched with the explosion-proof valve (111) of the battery monomer (11) to limit the explosion-proof valve (111). The first shell (21) and the second shell (22) are each provided with a limiting block (24), the limiting block (24) being arranged at the bottom of the battery monomer (11). The top and bottom of the shell body (2) are each provided with a heat dissipation mesh (25). The first shell (21) and the second shell (22) are provided with a lock assembly (3), the first shell (21) being buckled with the second shell (22) through the lock assembly (3).

2. The secondary battery module according to claim 1, characterized by: The lock assembly (3) is provided in several groups, the lock assembly (3) comprising a protrusion (31) and a groove (32); the first shell (21) and the second shell (22) are buckled through the protrusion (31) and the groove (32).

3. The secondary battery module according to claim 1, characterized by: The outer diameter of the protrusion (31) is slightly larger than the inner diameter of the groove (32); the protrusion (31) and the groove (32) are connected in interference.

4. The secondary battery module according to claim 1, characterized by: The top of the convex strip (211) is horizontal, and the two sides thereof are in arc shape.

5. The secondary battery module according to claim 4, characterized by: The number of the convex strips (211) is multiple, and they are arranged uniformly in the vertical direction.

6. The secondary battery module according to claim 5, characterized by: The secondary battery module of any one of claims 1-8 is connected in series or parallel; 7. The secondary battery module according to claim 1, characterized by: The secondary battery pack is connected in series or parallel through a copper bar (7) to form a secondary battery system; 8. The secondary battery module of claim 1, wherein: The first clamping plate (5) and the second clamping plate (6) are fixed through a fixing screw (8).

9. A secondary battery system characterized by comprising: Further comprising a temperature adjusting device for adjusting the temperature of the battery system, the temperature adjusting device comprising a heat exchanger; The heat exchanger comprises a heat dissipation fan (9) and a heat dissipation cavity (10); the heat dissipation fan (9) and the heat dissipation cavity (10) are provided in two groups and are arranged at the top and the bottom of the secondary battery system, respectively; The heat dissipation cavity (10) at the top is communicated with the heat dissipation mesh (25) at the top of the shell body (2), and the corresponding air inlet of the heat dissipation fan (9) is arranged correspondingly with the heat dissipation cavity (10) for heat dissipation and air suction; The heat dissipation cavity (10) at the bottom is communicated with the heat dissipation mesh (25) at the bottom of the shell body (2), and the corresponding air outlet of the heat dissipation fan (9) is arranged correspondingly with the heat dissipation cavity (10) for heat dissipation and air supply.

10. The secondary battery system according to claim 9, wherein: ​ ​ ​ ​

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