Battery cell module and battery
By providing restriction limits for battery cell modules and using module end plates and elastic belt structures, the existing module end plates are solved, and the problems such as large weight and prone to rust are solved, ensuring the rigidity of battery cell modules under vibration and impact and stability, conducive to automated assembly.
Patent Information
- Application Number
- CN202323492342.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Most module end plates at this stage are made of sheet metal and profile parts. After long-term use, they are prone to problems such as large weight, easy rust, difficult molding, surface damage caused by secondary machining, and low strength.
By providing a restraining limit for the battery cell module, at least two module end plates, a first elastic belt and a second elastic belt are used, the first elastic belt is arranged at the top of the module end plate, and the second elastic belt is arranged at the same time. Provides stable support and extrusion strength at the bottom end of the module end plate.
Ensure the rigidity of the battery cell module under vibration and impact, ensure the stable and safe operation of the battery cell module, which is conducive to the automatic assembly of the production line, and solves the large weight, easy rust and difficult molding of the existing module end plates. etc.
Smart Images
Figure CN222440733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power batteries, and in particular to a battery core module and a battery. Background Art
[0002] In recent years, my country's automobile industry has developed rapidly, and energy storage technologies related to automobile power have also received widespread attention and attention. As a very important component inside the energy storage battery pack, the battery cell module plays a very critical role in maintaining the best working conditions of the battery cell.
[0003] In the automotive industry, a battery module generally includes multiple battery cells, and multiple modules form a battery pack, which is the basic structure of a vehicle power battery. Battery modules are generally made of aluminum end plates as external protection connections. The module mainly relies on the end plates to ensure the stability of the battery cells. Because under actual working conditions, the battery will be subjected to vibration, impact, extrusion, durability and other working conditions, the module will be fixed with bolts to provide a more stable installation strength. In addition, the battery cell will generate a large expansion force with the cycle charge and discharge, and the end plate is needed to provide a limiting force. The module end plate is used as the battery cell assembly, providing a stable extrusion plane for the battery cell, as well as electrical clearance and creepage distance that comply with electrical safety regulations, to ensure that the module can operate safely and stably.
[0004] However, at present, most module end plates are often made of sheet metal and profile parts, which are prone to problems such as heavy weight, easy to rust, difficult to form, secondary machining to damage the surface, and low strength after long-term use. Utility Model Content
[0005] The embodiment of the present application provides a battery cell module and a battery. The battery cell module provides a restraint limit for the module end plate, provides stable support and extrusion strength for the battery cell, ensures the rigidity of the battery cell module under vibration and impact, ensures that the battery cell module can operate stably and safely, is conducive to automated assembly of the production line, and solves the problem that most of the module end plates at this stage are often made of sheet metal parts and profile parts, which are prone to heavy weight, easy to rust, difficult to form, secondary machining damage to the surface, low strength and other problems after long-term use.
[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:
[0007] A first aspect of an embodiment of the utility model provides a battery cell module, comprising at least two module end plates, a first elastic band and a second elastic band;
[0008] At least two module end plates are arranged opposite to each other, the first elastic band and the second elastic band are both annular structures, and the first elastic band is sleeved on the top ends of at least two module end plates, and the second elastic band is sleeved on the bottom ends of at least two module end plates.
[0009] On the basis of the above technical solution, the present invention can also be improved as follows.
[0010] In a possible implementation, a first limiting groove and a second limiting groove are formed on the outer side wall of each module end plate;
[0011] The first elastic band is engaged in the first limiting groove, and the first elastic band is fixed to the module end plate;
[0012] The second elastic band is engaged in the second limiting groove, and the second elastic band is fixed to the module end plate.
[0013] In a possible implementation, each module end plate is provided with a connection component;
[0014] The connection assembly is located on the side of the module end plate facing away from the battery cell unit.
[0015] In a possible implementation, the connection assembly includes a first connection member and a second connection member;
[0016] The first connecting member is disposed near the outer edge of the module end plate;
[0017] The second connecting member is disposed in the middle area of the module end plate;
[0018] The first connecting member and the second connecting member are used to install and fix the battery cell module.
[0019] In a possible implementation, the battery cell module further includes: an output pole seat;
[0020] The output pole seat is located on one side of the module end plate, and the output pole seat is electrically connected to the battery cell unit.
[0021] In a possible implementation, the output pole seat is provided with at least two output pole slots;
[0022] The output pole slot is used to accommodate the pole of the battery cell unit.
[0023] In a possible implementation, an insulating plate is provided on a side of each module end plate facing the battery cell unit;
[0024] The insulating plate is connected to the module end plate, and the battery cell unit is connected to the insulating plate, so that the battery cell unit is connected to the module end plate through the insulating plate.
[0025] In a possible implementation, a reinforcement piece is provided on a side of each module end plate facing away from the battery cell unit.
[0026] In a possible implementation, the module end plate is an aluminum plate.
[0027] A second aspect of the embodiments of the present utility model provides a battery, comprising the above-mentioned battery cell module.
[0028] The embodiment of the utility model provides a battery cell module and a battery, wherein the battery cell module includes at least two module end plates, a first elastic band, a second elastic band and a battery cell unit. Among them, at least two module end plates are arranged opposite to each other, the first elastic band and the second elastic band are both annular structures, and the first elastic band is sleeved on the top ends of at least two module end plates, and the second elastic band is sleeved on the bottom ends of at least two module end plates. The battery includes the above-mentioned battery cell module. In this way, the embodiment of the utility model can provide a restraining limit for the battery cell module, provide a stable support and extrusion strength for the battery cell, ensure the rigidity of the battery cell module under vibration and impact, ensure the stable and safe operation of the battery cell module, and facilitate the automated assembly of the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 A schematic diagram of the structure of a battery module provided in one embodiment of the utility model;
[0031] Figure 2 A front view of a module end plate in a battery cell module provided in one embodiment of the utility model.
[0032] Description of reference numerals:
[0033] 100-battery cell module;
[0034] 200-module end plate;
[0035] 210-first limiting groove; 220-second limiting groove; 230-connecting assembly; 231-first connecting member; 232-second connecting member;
[0036] 300 - first elastic band;
[0037] 400 - second elastic band;
[0038] 500-hollow cavity;
[0039] 600- output pole seat;
[0040] 610- output pole slot;
[0041] 700-insulation board;
[0042] 800 - Reinforcement. DETAILED DESCRIPTION
[0043] As described in the background technology, most of the module end plates at this stage are often made of sheet metal parts and profile parts. After long-term use, they are prone to problems such as heavy weight, easy to rust, difficult to shape, secondary machining to damage the surface, and low strength.
[0044] In view of the above technical problems, an embodiment of the utility model provides a battery cell module and a battery, wherein the battery cell module includes at least two module end plates, a first elastic band and a second elastic band. Among them, at least two module end plates are arranged opposite to each other, the first elastic band and the second elastic band are both annular structures, and the first elastic band is sleeved on the top ends of at least two module end plates, and the second elastic band is sleeved on the bottom ends of at least two module end plates. The battery includes the above-mentioned battery cell module. In this way, the embodiment of the utility model can provide a restraining limit for the battery cell module, provide a stable support and extrusion strength for the battery cell, ensure the rigidity of the battery cell module under vibration and impact, ensure the stable and safe operation of the battery cell module, and facilitate the automated assembly of the production line.
[0045] In order to make the above-mentioned purposes, features and advantages of the embodiments of the utility model more obvious and easy to understand, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0046] The present utility model embodiment provides a battery cell module and a battery, which provide a restraint limiter for the battery cell module, provide a stable support and extrusion strength for the battery cell, ensure the rigidity of the battery cell module under vibration and impact, ensure that the battery cell module can operate stably and safely, and facilitate the automated assembly of the production line. The specific structure of the battery cell module and the battery provided in the embodiment of the present application is introduced below in conjunction with the accompanying drawings.
[0047] refer to Figure 1, the first aspect of the embodiment of the utility model provides a battery cell module 100, which may include a module end plate 200, a first elastic band 300 and a second elastic band 400. In one possible implementation, the number of module end plates 200 may be at least two, and the number of battery cell units may be several. The utility model does not limit the number of module end plates 200 and battery cell units. In the embodiment of the present application, the number of module end plates 200 is two for example. The two module end plates 200 may be arranged opposite to each other. In one possible implementation, the first elastic band 300 and the second elastic band 400 may both be annular structures, and the first elastic band 300 may be sleeved on the top ends A of the two module end plates 200, and correspondingly, the second elastic band 400 may be sleeved on the bottom ends B of the two module end plates 200. In one possible implementation, the top ends A and the bottom ends B of the module end plates 200 may be as follows. Figure 1 It can be understood that the top A of the module end plate 200 can be the top of the module end plate 200 in the height direction, and the bottom B of the module end plate 200 can be the bottom of the module end plate 200 in the height direction.
[0048] Continue to refer Figure 1 In some other embodiments, the battery module 100 may further include a battery cell unit (not shown in the figure). In a possible implementation, the two module end plates 200 and the first elastic band 300 and the second elastic band 400 may enclose a hollow cavity 500, wherein the battery cell unit may be located in the hollow cavity 500, and both ends of the battery cell unit may be connected to the module end plate 200. It is understandable that the module end plate 200 may be a rectangular plate, and the utility model does not limit the shape of the module end plate 200.
[0049] Of course, in some other embodiments, any one of the first elastic band 300 and the second elastic band 400 can be used to bind the module end plate 200. For example, the first elastic band 300 can be sleeved on the module end plate 200, and the second elastic band 400 is not provided. Alternatively, the second elastic band 400 can be sleeved on the module end plate 200, and the first elastic band 300 is not provided. In a possible implementation, the number of the first elastic band 300 and the second elastic band 400 includes but is not limited to one, and the number of the first elastic band 300 can also be set to more than one, or the number of the second elastic band 400 can be set to more than one. The utility model does not limit the number of the first elastic band 300 and the second elastic band 400.
[0050] refer to Figure 2, when the present embodiment is specifically implemented, a first limiting groove 210 and a second limiting groove 220 may be provided on the outer side wall of each module end plate 200. In the embodiment of the present application, the first limiting groove 210 and the second limiting groove 220 may be provided on the outer side walls on both sides of each module end plate 200, respectively. In a possible implementation, the first limiting groove 210 and the second limiting groove 220 may be matched with the first elastic band 300 and the second elastic band 400, respectively. It is understandable that the first elastic band 300 may be engaged in the first limiting groove 210 so that the first elastic band 300 can be fixed to the module end plate 200. Correspondingly, the second elastic band 400 may be engaged in the second limiting groove 220 so that the second elastic band 400 can be fixed to the module end plate 200. It is understandable that the first elastic band 300 and the second elastic band 400 may both have a certain elasticity, so that the first elastic band 300 and the second elastic band 400 have sufficient elastic force to be engaged in the first limiting groove 210 and the second limiting groove 220 .
[0051] Continue to refer Figure 2 On the basis of the above embodiment, each module end plate 200 may be provided with a connection assembly 230. The connection assembly 230 may be located on the side of the module end plate 200 facing away from the battery cell unit. It is understandable that the connection assembly 230 may be used to provide installation and hoisting of the battery cell module 100 to realize the assembly of the battery cell module 100.
[0052] Continue to refer Figure 2 On the basis of the above embodiment, further, the connection assembly 230 may include a first connection member 231 and a second connection member 232. In one possible implementation, the number of the first connection member 231 and the second connection member 232 may be several, and the utility model does not limit the number of the first connection member 231 and the second connection member 232. In the embodiment of the present application, the first connection member 231 may be arranged near the outer edge of the module end plate 200, and the second connection member 232 may be arranged in the middle area of the module end plate 200. Of course, in some embodiments, several first connection members 231 may be arranged in parallel vertically near the outer edge of the module end plate 200, and several second connection members 232 may be arranged in parallel horizontally in the middle area of the module end plate 200. In the embodiment, the number and position of the first connection member 231 and the second connection member 232 may be set according to the installation requirements, so that the first connection member 231 and the second connection member 232 can install and fix the entire battery module 100.
[0053] Continue to refer Figure 2On the basis of the above embodiments, it can be understood that the orthographic projections of the first limiting groove 210 and the second limiting groove 220 toward the module end plate 200 should not overlap with the orthographic projections of the first connecting member 231 and the second connecting member 232 toward the module end plate 200, so that the first limiting groove 210 and the second limiting groove 220 do not interfere with the first connecting member 231 and the second connecting member 232. In this way, after the first elastic band 300 and the second elastic band 400 are respectively engaged with the first limiting groove 210 and the second limiting groove 220, since the first elastic band 300 and the second elastic band 400 are both annular structures, on the basis that the first limiting groove 210 and the second limiting groove 220 do not interfere with the first connecting member 231 and the second connecting member 232, the first elastic band 300 and the second elastic band 400 will not interfere with the first connecting member 231 and the second connecting member 232.
[0054] Continue to refer Figure 1 as well as Figure 2 , on the basis of the above embodiment, the battery cell module 100 may further include: an output pole seat 600. Among them, in the embodiment of the present application, the output pole seat 600 may be located on one side of the module end plate 200, and the output pole seat 600 is electrically connected to the battery cell unit. In one possible implementation, the output pole seat 600 may be directly located at the top of the module end plate 200. Of course, in some other embodiments, the output pole seat 600 may be located above the top of the module end plate 200, and the output pole seat 600 may be connected to the top of the module end plate 200. It can be understood that the length dimension of the output pole seat 600 may be the same as the length dimension of the module end plate 200, so that the output pole seat 600 can be connected to the module end plate 200.
[0055] Continue to refer Figure 2 On the basis of the above-mentioned embodiment, an output pole slot 610 may be provided on the output pole seat 600. Among them, in a possible implementation, the number of the output pole slots 610 may be at least two, and the utility model does not limit the number of the output pole slots 610. In the embodiment of the present application, the number of the output pole slots 610 is two for example. Among them, the two output pole slots 610 may be respectively opened at both ends of the output pole seat 600. It can be understood that the output pole slots 610 can be used to accommodate the poles of the battery cell unit (not shown in the figure), so that the output pole slots 610 and the output pole seat 600 are electrically connected to the battery cell unit.
[0056] Continue to refer Figure 1On the basis of the above embodiment, an insulating plate 700 may be provided on the side of each module end plate 200 facing the battery cell unit. Among them, the insulating plate 700 may be connected to the module end plate 200, and the battery cell unit may also be connected to the insulating plate 700, so that the battery cell unit can be connected to the module end plate 200 through the insulating plate 700. In a possible implementation, the side of each module end plate 200 facing the battery cell unit may be connected to the insulating plate 700 by adhesive. Of course, the module end plate 200 may also be connected to the insulating plate 700 by other connection methods. Correspondingly, the battery cell unit may also be connected to the insulating plate 700 by adhesive. In addition, the battery cells in the battery cell unit may also be connected by adhesive. The utility model does not limit the connection method between the module end plate 200 and the insulating plate 700, the battery cell unit and the insulating plate 700, and the battery cells.
[0057] Continue to refer Figure 2 On the basis of the above embodiment, a reinforcement member 800 is provided on the side of each module end plate 200 facing away from the battery cell unit. The reinforcement member 800 can be used to enhance the mechanical strength of the battery cell module 100. In a possible implementation, the number of reinforcement members 800 can be several, and the utility model does not limit the number of reinforcement members 800. In the embodiment of the present application, the reinforcement member 800 can be protrudingly arranged on the side of the module end plate 200 facing away from the battery cell unit, and the reinforcement member 800 can be arranged in cooperation with the first connector 231, the second connector 232 and the output pole seat 600.
[0058] Based on the above embodiment, the module end plate 200 can be an aluminum plate. In this way, the module end plate 200 is cast with aluminum material, thereby reducing the weight of the battery module 100, and the casting structure uses aluminum liquid, with high material utilization, and defective products can be 100% recycled, saving costs.
[0059] A second aspect of the embodiment of the utility model provides a battery (not shown in the figure). The battery may include at least one battery cell module 100 as described above.
[0060] In the embodiment of the present application, the first elastic band 300 and the second elastic band 400 are used to bind and firmly support the battery cell unit, thereby replacing the problem of welding the side plate of the existing module end plate 200. When the battery cell module 100 performs a working cycle, several batteries in the battery cell unit are discharged and charged and expand and stretch along the length direction of the first elastic band 300 and the second elastic band 400. The first elastic band 300 and the second elastic band 400 and the two opposite module end plates 200 squeeze several batteries in the opposite direction, thereby suppressing the expansion of the battery cells and ensuring the life and optimal working conditions of the battery cells. Among them, the compression resistance can be greater than 30000N, suppressing the expansion force under the 70% capacity condition when the capacity of the battery cell drops below the preset threshold, and improving the overall strength of the battery cell module 100.
[0061] In the embodiment of the present application, the first elastic band 300 and the second elastic band 400 are limited on the module end plate 200 through the first limiting groove 210 and the second limiting groove 220. In this way, the module end plate 200, the first elastic band 300 and the second elastic band 400 can provide stable support and extrusion strength for the battery cell unit, ensure the rigidity of the battery cell module 100 under vibration and impact, ensure that the battery cell module 100 can operate stably and safely, and facilitate the automated assembly of the production line. In addition, an output pole seat 600 is provided on one side of the module end plate 200 to provide electrical safety for the positive and negative electrode interfaces of the battery cell module 100. The use of the first elastic band 300 and the second elastic band 400 to restrain the battery cell unit and the use of aluminum as the material of the module end plate 200 can reduce the weight of the battery cell module 100. In addition, a connection assembly 230 and an output pole slot 610 are provided on the module end plate 200, and no subsequent machining or welding of a lifting port is required, thereby avoiding secondary processing that damages the surface of the battery cell module 100 and improving production efficiency.
[0062] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.
[0063] It should be noted that the phrases "in specific implementation", "in some embodiments", "in this embodiment", "exemplarily" and the like mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.
[0064] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.
[0065] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0066] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A battery cell module, characterized in that: include: At least two module end plates, an output pole seat, a battery cell unit, a first elastic band and a second elastic band; The at least two module end plates and the first elastic band and the second elastic band form a hollow cavity, and the battery cell unit is located in the hollow cavity; The at least two module end plates are arranged opposite to each other, the first elastic band and the second elastic band are both annular structures, and the first elastic band is sleeved on the top ends of the at least two module end plates, and the second elastic band is sleeved on the bottom ends of the at least two module end plates; The output pole seat is located on one side of the module end plate, and the output pole seat is electrically connected to the battery cell unit.
2. The battery cell module according to claim 1, characterized in that: A first limiting groove and a second limiting groove are formed on the outer side wall of each module end plate; The first elastic band is engaged in the first limiting groove, and the first elastic band is fixed to the module end plate; The second elastic band is engaged in the second limiting groove, and the second elastic band is fixed to the module end plate.
3. The battery cell module according to claim 2, characterized in that: Each module end plate is provided with a connection component; The connecting assembly is located on a side of the module end plate facing away from the battery cell unit.
4. The battery cell module according to claim 3, characterized in that: The connecting assembly includes a first connecting member and a second connecting member; The first connecting member is disposed close to the outer edge of the module end plate; The second connecting member is disposed in the middle area of the module end plate; The first connecting member and the second connecting member are used to install and fix the battery cell module.
5. The battery cell module according to claim 3, characterized in that: The output pole seat is provided with at least two output pole slots; The output pole slot is used to accommodate the pole of the battery cell unit.
6. The battery cell module according to claim 3, characterized in that: An insulating plate is provided on one side of each module end plate facing the battery cell unit; The insulating plate is connected to the module end plate, and the battery cell unit is connected to the insulating plate, so that the battery cell unit is connected to the module end plate through the insulating plate.
7. The battery cell module according to any one of claims 1 to 6, characterized in that: A reinforcement piece is provided on the side of each module end plate facing away from the battery cell unit.
8. The battery cell module according to any one of claims 1 to 6, characterized in that: The module end plate is an aluminum plate.
9. A battery, characterized in that: A battery cell module comprising any one of claims 1 to 8.